[Past Activities ]
    [Chair of International Committee] 
	
                
                    - Steering Co-chair, The 5th International Conference on Ubiquitous Information TEchnologies & Applications (CUTE-10), IEEE CS, Sanya,Hainan, China, 16 - 18 December, 2010.
 
                    - Steering Chair, The FTRA 2010 International Symposium on Advances in Cryptography, Security and Applications for Future Computing (ACSA-10), FTRA Proceeding & SCI(E) journals, Gwangju, Korea, December 9-11, 2010.
 
                    - Workshop Organizer, The 4th IEEE International Workshop on Web and Pervasive Security (WPS 2010) in conjunction with IEEE GLOBECOM 2010 , IEEE Communications Society, Miami, USA, 6 - 10 December, 2010.
 
                    - Steering Co-chair, The 2010 International Symposium on Service, Security and its Data management technologies in Ubi-com 
 
                    - (SSDU-10) in Conjunction with UIC 2010, IEEE CS, Xi'an, China, October 26-29, 2010.
 
                    -  5th International Symposium on Embedded Multicore Systems-on-Chip (MCSoC-2010), IEEE CS, San Diego, California, USA, September 13-16, 2010. 
 
                    - Program  Co-chair, 5th International Symposium on Embedded Multicore Systems-on-Chip (MCSoC-2010), IEEE CS, San Diego, California, USA, September 13-16, 2010. 
 
                    - Steering Co-chair,                          The 2nd International Conference on Information Technology Convergence and Services (ITCS 2010), IEEE Press, Cebu, Philippines, August 11 - 13, 2010.
 
                    - Steering Chair,                          The 4th International Conference on Multimedia and Ubiquitous Engineering (MUE 2010), IEEE CS,  Cebu, Philippines, August 11 - 13, 2010.
 
                    - Steering Co-chair,                          The 3rd International Conference on Human-centric Computing (HumanCom-10), IEEE Press, Cebu, Philippines, August 11 - 13, 2010.
 
                    - Steering Chair,                          The 5th International Conference on Embedded and Multimedia Computing (EMC-10), IEEE Press, Cebu, Philippines, August 11 - 13, 2010.
 
                    - General Co-chair,                          The 10th International Conference on Algorithms and Architectures for Parallel Processing (ICA3PP 2010), Springer-LNCS, Busan, Korea, May 21-23, 2010.                                                                                                                                                                                                                                                                                                                                                                                
 
                    - Steering Co-chair,                          The 5th International Conference on Future Information Technology  (                          FutureTech 2010), IEEE CS, Busan, Korea, May 21-23, 2010.
 
                    - Program Vice Co-chair of Pervasive/Ubiquitous Computing and Services Track, The IEEE 24th International Conference on Advanced Information Networking and Applications (AINA 2010), IEEE CS, Perth, Australia, 20-23 April 2010. 
 
                    - General Co-chair, The 4th International Conference on Ubiquitous Information Technologies & Applications (ICUT-09), IEEE CS, Kyushu Sangyo University, Fukuoka, Japan, December 20 - 22, 2009.  
 
                    - General Co-chair, International Symposium on Multidisciplinary Autonomous Networks and Systems (MANS 2009) ,  IEEE CS, December 12-14, 2009, Chengdu, China. 
 
                    - General Co-chair, The 2009 FTRG International Workshop on Advances in Cryptography, Security and Applications for Future Computing (ACSA-09), Elsevier - COMPUTERS & MATHEMATICS WITH APPLICATIONS Journal, Jeju, Korea, December 11 - 12, 2009.
 
                    - Steering Co-chair, The Fourth International Conference on 
                        Embedded and Multimedia Computing (EM-Com 2009), IEEE, Jeju, Korea, December 10 - 12, 2009.
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
 
                    - General Co-chair, The 2nd International Conference on Computer Science and its Applications (CSA-09), IEEE, Jeju, Korea, December 10 - 12, 2009.
 
                    - Publicity Co-chair, The 1st International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery (CyberC 2009), IEEE CS, ZhangJiaJie, China, October 10-12, 2009
 
                    - Co-organizer, The Third International Workshop on Design and Integration Principles for Smart Objects (DIPSO 2009) - in conjunction with Ubicomp 2009, a Ubicomp 2009 proceedings supplement, Orlando, Florida, September 30, 2009. 
 
                    - Steering Co-chair, The 4th International Symposium on Cloud and Convergence Computing (2C-Com 2009), IEEE CS, Vancouver, Canada, August 29-31, 2009.
 
                    - General Co-Chair, 2009 International Workshop on Pervasive Multimedia Sensor Networks (PMSN 2009), IEEE CS, Vancouver, Canada, August 29-31, 2009.
 
                    - General Chair, The 2009 International Workshop on Ubiquitous Computing Security (UC-Sec 09) In Conjunction with SAM'09 / WORLDCOMP'09, July 13-16, 2009, Las Vegas, USA
 
                    - Steering Co-chair, The fourth International Symposium on Smart Home (SH-09), ACM Mobiquitous-09 Proceeding, Radisson Hotel Admiral Toronto HarbourFront, Toronto, Canada, July 13 - 16, 2009
 
                    - International liaison Co-chair, The 6th International Conference             on Ubiquitous Intelligence and Computing (UIC-09), Springer-LNCS, Brisbane, Australia, 7 - 10 July, 2009.
 
                    - General Co-chair, The 11st IEEE International Conference on High Performance Computing and Communications (HPCC-09) , IEEE CS, Korea University, Seoul, Korea, June 25-27, 2009.  
 
                    - General Co-chair, The 3rd IEEE International Conference on Information Security and Assurance (ISA-09), IEEE CS, Korea University, Seoul, Korea, June 25-27, 2009.  
 
                    - Steering Chair, 2009 International Workshop on Network Assurance and Security Services in Ubiquitous Environments (NASSUE-2009), IEEE CS, Korea University, Seoul, Korea, June 25-27, 2009.  
 
                    - Steering Chair, The  3rd International Conference on Multimedia and Ubiquitous Engineering (MUE-09), IEEE CS, Qingdo, China, June 4-6, 2009.
 
                    - Steering Chair, The 3rd  International Symposium on Security and Multimodality in Pervasive Environments (SMPE-09), IEEE CS, University of Bradford, Bradford, UK, May 26-29, 2009.
 
                    - Chair on Security and Information Assurance track,  The 7th ACS/IEEE International Conference on Computer Systems and Applications (AICCSA-09), Rabat, Morocco, May 10-13, 2009. 
 
                    - Steering Chair, The 3rd International Symposium on 
      Service, Security and its Data management technologies in Ubi-comp (SSDU-09), IEEE CS, Geneva, Switzerland, 4-8 May 2009. 
 
                    - Steering Chair, The 3rd International Workshop on Web and Pervasive Security (WPS-09) to be held 
in conjunction with  PerCom 2009, IEEE CS, Dallas, 16 - 20 March 2009.
 
                    - Track Co-chair, The 3rd International Conference on Complex, Intelligent and Software Intensive Systems (CISIS 2009), Fukuoka, Japan, March 16 ~19, 2009. 
 
                    - Steering Co-chair, The 4th International  Symposium on Ubiquitous Applications & Security Services (UASS-09), IEEE Communications Society, Las Vegas, Nevada, USA, January 11-13, 2009.
 
                    - General Co-chair, The Fourth International Symposium on Security in Ubiquitous Computing (SecUbiq-08), IEEE CS, Sanghai, 
                    China, Dec. 17-20, 2008.
 
                    - Steering Co-chair, The 3rd International Symposium on Trustworthiness, Reliability and services in Ubiquitous and Sensor neTworks  (TRUST-08), IEEE CS, Sanghai, 
                    China, Dec. 17-20, 2008.
 
                    - Publicity Co-chair,IEEE 
                    International Symposium on Multimedia (ISM'08), 
                     IEEE CS, Berkeley, 
                    CA, USA, December 15-17, 2008.
 
                    - General Co-chair,                          The 2nd International Conference on Future Generation Communication and Networking (FGCN-08), IEEE CS, Hainan Island, China, December 13-15, 2008.
 
                    - General Co-chair,                          The 2nd International Workshop on Forensics for Future Generation Communication environments (F2GC-08), IEEE CS, Hainan Island, China, December 13-15, 2008.
 
                    - Steering Co-chair,                           The Third International Symposium on Smart Home  (SH-08), IEEE CS, Hainan Island, China, December 13-15, 2008.
 
                    - Steering Co-chair, The 2nd International Conference on Intelligent Pervasive Computing (IPC-08), IEEE CS, Sydney, Australia, December 10-12, 2008.
 
                    - Steering Co-chair, The 2nd International Workshop on Intelligent Systems and Smart Home (WISH-08) , EEE CS, Sydney, Australia, December 10-12, 2008.
 
                    - Workshop Co-chair, 2008 IEEE Asia-Pacific Services Computing Conference (IEEE APSCC 2008), IEEE CS, Yilan, Taiwan, December 9-12, 2008.
 
                    - Steering Co-chair, The 2008 Workshop on Dependable and Secure Services
Computing (DSSC-08), IEEE CS, Yilan, Taiwan, December 9-12, 2008.
 
                 
                
                    - Program  Co-chair, 
The Third International 
                    Symposium on Information Security (IS'08), 
                    Springer-LNCS, Monterrey, 
                    Mexico, November 10 - 11, 2008.
 
                    - General 
Co-chair, The 2008 International Symposium on Ubiquitous Multimedia Computing (UMC-08), IEEE CS, Australia, October 13 - 15, 2008.
 
                    - General 
Co-chair, The 2008 International Symposium on Computer Science and its Applications (CSA-08), IEEE CS, Australia, October 13 - 15, 2008.
 
                    - Program  Co-chair,The International Conference on Mobile Technology, Applications and System (Mobility 2008), ACM, Ilan, Taiwan, Sept., 
                    10-12,             2008. 
 
                 
                
                    - Steering Co-chair, The 2nd  International Symposium on Security and Multimodality in Pervasive Environments (SMPE-08),  Trinity College Dublin, Ireland,  July 
                    21 
                    - 25, 2008.
 
                 
                
                    - International liaison Co-chair, The 5th International Conference             on Ubiquitous Intelligence and Computing (UIC-08), Springer-LNCS, Oslo, Norway, June 23-26, 2008.
 
                    - Workshop Co-chair,The IEEE International Conference on Sensor Networks, Ubiquitous, and Trustworthy Computing (SUTC2008), IEEE CS, Taichung, Taiwan, June 11-13, 2008.
 
                    - Steering Chair, The Second IEEE International Workshop on Ad Hoc and Ubiquitous Computing (AHUC 2008), IEEE CS, Taichung, Taiwan, June 11-13, 2008.
 
                    - Steering Co-chair, The 2nd 
                    International Symposium on Service, Security and its Data 
                    management technologies in Ubi-com (SSDU-08), IEEE CS, 
                    Kunming, China, May 25 ~ 28, 2008.
 
                    - General 
Co-chair, The 2nd International Symposium on Ubiquitous Multimedia Service 
(UMS-08), IEEE CS, Busan, Korea , April 24-26, 2008.
 
                    - Steering Co-chair, The 2nd International Workshop on Interactive Multimedia & Intelligent Services in Mobile and Ubiquitous Computing (IMIS 2008), IEEE CS, Busan, Korea , April 24-26, 2008.
 
                    - General Co-chair, The  2008 International Conference on Multimedia and Ubiquitous Engineering (MUE 2008), IEEE CS, Busan, Korea , April 24-26, 2008.
 
                    - General Co-chair, The 3rd International  Symposium on Ubiquitous Application & Security Service (UASS-08), IEEE CS, Japan, March 25 - 28, 2008.
 
                    - General Co-chair, The 2nd International Workshop on Web and Pervasive Security (WPS2008), to be held in conjunction with  PerCom 2008,  Hong Kong, 17 - 21 March 2008.
 
                    - Program  Co-chair,The Third International Symposium on Security in Ubiquitous Computing (SecUbiq-07), Springer-LNCS, Taiwan, Dec. 17-20,             2007. 
 
                    - General Co-chair, The 2nd International Workshop on Trustworthiness, Reliability and services in Ubiquitous and Sensor neTworks (TRUST 2007), Springer-LNCS, Taiwan, Dec. 17-20, 2007.
 
                    - Publicity Co-chair, The 3rd International Conference on Mobile Ad-hoc and Sensor Networks (MSN 2007), Springer-LNCS, Beijing, China, December 12-14, 2007.
 
                    - Program Vice Co-chair, The IEEE 2007 International Symposium on 
            Multimedia (ISM-07), IEEE 
                        CS, Taipei, Taiwan, 
            December 10-12, 2007. 
 
                    - General Co-chair, The 2007 International Workshop on Forensics for Future Generation Communication environments (F2GC-07), IEEE CS, Jeju Island, Korea, December 6-8, 2007. 
 
                    - Program Co-chair,                          The 2007 International Conference on Future Generation Communication and Networking (FGCN-07), IEEE CS, Jeju Island, Korea, December 6-8, 2007.
 
                    - Steering Co-chair,                          The 2007 International Workshop on Cooperative Wireless Communications and 
Networking (CoNET-07), IEEE CS, Jeju Island, Korea, December 6-8, 2007.
 
                    - Steering Co-chair,                          The 2nd International Symposium on Smart Home (SH-07), IEEE 
                        CS, Jeju Island, Korea, December 7-8, 
2007.
 
                    - Program                         Co-chair, 
                        The Second International Symposium on 
                        Information Security (IS 2007), Springer-LNCS, 
                        Vilamoura, Algarve, Portugal, 
                    Nov 25-30,  2007.
 
                    - General Co-chair, The 2007 International Conference on Intelligent Pervasive Computing (IPC-07), IEEE 
                    CS, 
            Jeju Island, Korea, October 11-13, 2007.
 
                    - General Co-chair, The 2007 International 
                    workshop on Secure and Multimodal Pervasive Environments 
                    (SMPE-07), IEEE CS, Nice, France, September 17-21, 2007.
 
                    - Co-chair,The 2007 Special 
                        Session on Hybrid Intelligent Computing and its Application 
                        (HICA-07), in conjunction with The 3rd International 
                        Conference on Natural Computation (ICNC '07), Springer-LNCS, 
           Hainan University, China, August 
                        24-27, 2007. 
 
                    - General Co-chair, The 2007 International Workshop on Intelligent Systems and Smart Home (WISH-07) , Springer-LNCS, Niagara Falls, Canada, August  21-24, 2007.
 
                    - Publicity Co-chair, The 5th International Symposium                         on Parallel and Distributed Processing and Applications 
                        (ISPA-07) , Springer-LNCS, 
            Niagara Falls, Canada, August 
                         21-24, 2007.
 
                    - Publicity             Co-chair, IEEE International Conference on Pervasive Services (ICPS'07), 
            IEEE-CS, Istanbul, Turkey, July 
            15-20, 2007.
 
                    - International liaison Co-chair, The 4th International Conference             on Ubiquitous Intelligence and Computing (UIC-07), 
            Springer-LNCS, Hong Kong, July 11-13, 2007.
 
                    - General Co-chair, The 2007  International 
            Workshop on Service, Security and its Data management technologies 
            in Ubi-Com (SSDU-07) 
            , Springer-LNCS, Nanjing, China, 
            May 22-25, 2007.
 
                    - Program Co-chair, IEEE International Symposium on Ubiquitous Computing             and Intelligence (UCI'07), IEEE CS, 
            Canada, May 21, 2007.
 
                    - Steering Co-chair, The 2007 International Workshop on Interactive Multimedia & Intelligent Services                         in Mobile and Ubiquitous 
Computing 2007 (IMIS2007), Korea , April 
            26-28, 2007.
 
                    - General Co-chair, The  2007 International Conference on Multimedia and 
            Ubiquitous Engineering (MUE 2007), Korea , April 
            26-28, 2007.
 
                    - General Co-chair, The First International Workshop on Smart Home (IWSH 
            2006), IEEE CS / Springer-LNCS,
            Korea, Nov.10-11, 2006. 
 
                 
            
              
            [International Committee Member]
            
                
                    - Program Committee, GLOBECOM 2010 - Symposium on Communications Software, Services and Multimedia Applications Symposium (CSSMA 2010), Miami, Florida, USA, IEEE Communications Society , Nov. 26 - Dec. 3, 2010.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
 
                    - Program Committee, 5th International Conference on Grid and Pervasive Computing (GPC 2010), IEEE, Hualien, Taiwan, ROC, 10-14 May, 2010.  
 
                    - Program Committee,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          Fourth International Workshop on Secure Software Engineering (SecSE 2010), IEEE CS, February, 15th - 18th 2010, Andrzej Frycz Modrzewski Cracow College, Krakow, Poland
 
                    - Program Committee, The 25th ACM Symposium on Applied Computing Sierre, TRACK ON NETWORKING (NETS), ACM Press, Switzerland, 22 - 26 March, 2010.
 
                    - Program Committee, The 5th Annual International Wireless Internet Conference (WICON 2010),  IEEE/ACM, The Holiday Inn Atrium, Singapore, March 1 - 3, 2010.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
 
                    - Steering Committee, The 8th IEEE International Conference on Pervasive Intelligence and Computing (PICom-09),  IEEE CS, December 12-14, 2009, Chengdu, China.
 
International Advisory Committee, , The 8th IEEE International Conference on Dependable, Autonomic and Secure Computing (DASC-09),  IEEE CS, December 12-14, 2009, Chengdu, China.
                    - Program Committee, The 10th International Symposium on Pervasive Systems, Algorithms and Networks (I-SPAN 2009), IEEE CS, December 14-16, 2009, Kaohsiung, Taiwan, R.O.C.
 
                    - Advisory Committee, The 1st International Conference on Cloud Computing Technology (CloudCom-09), Beijing, China, December 1-4, 2009.
 
                    - Program Committee, 2009 International Workshop on Secure Multimedia Communication and Services (SECMCS'09), IEEE CS, November 18-20, 2009, Wuhan, China. 
 
                    - Program Committee, The 4th International Symposium on Information Security (OTM: IS'09), Springer-LNCS, Vilamoura, Algarve-Portugal, Nov 01 - 02, 2009
 
                    - International Organizing Committee, 3rd International Conference on e-Democracy (e-Democracy 2009) "Next Generation Society: Technological and Legal Issues",  Athens, Greece, 24 - 25 September 2009.   
 
                    - Program Committee, International Workshop on Advanced Sensor Integration Technology (ASIT 2009), Springer-LNICST, September 23-25, 2009, Niagara Falls, Ontario, Canada
 
                    - Program Committee, Workshop in Information Security Theory and Practices 2009:Smart Devices, Pervasive Systems, and Ubiquitous Networks (WISTP-09), Springer-LNCS, September 2-4, 2009, Brussels, Belgium.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
 
                    - Program Committee, International Conferences on Embedded and Ubiquitous Computing (EUC-09), IEEE CS, Vancouver, Canada, August 29-31, 2009
 
                    - Program Committee, The 15th IEEE International Conference on Embedded and Real-Time Computing Systems and  Applications (RTCSA 2009), IEEE CS, Beijing, China, August 24 to 26, 2009                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
 
                    - Program Committee, Special Session on Pervasive Computing, IE 2009, IET Proceeding, Barcelona, Spain, July 20-21, 2009.
 
                    - Program Committee, International Symposium on Multidisciplinary Autonomous Networks and Systems (MANS 2009), IEEE CS, Brisbane, Australia, 7 -10 July, 2009. 
 
                    - Program Committee, The International Conference on Signal Processing and Multimedia Applications (SIGMAP 2009), Conference Proceedings Citation Index, INSPEC and DBLP, July 7-10, Milan, Italy.
 
                    - Program Committee, The 7th International Conference on Smart homes and health Telematics (ICOST2009), Springer-LNCS, Paris, France, 1-3 July 2009.
 
                    - International Advisory committee , The 2009 International Workshop on Computer Graphics, Multimedia and Security (CGMS-09), IEEE CS, Korea University, Seoul, Korea, June 25-27, 2009. 
 
                    - Steering Committee, The 2009 International Workshop on Multicore and Multithreaded Architectures and Programming (MMAP 2009). June 25-27, 2009 in Korea University, Seoul, Korea.
 
                    - Program Committee, Pervasive/ Ubiquitous Computing Workshop (PUC 2009), IEEE Communications Society, Leipzig, Germany, June 21-24, 2009.
 
                    - Program Committee, The 4th International ICST Conference on Scalable Information Systems (InfoScale09), Conference proceedings (The ACM Digital Library), June 10-12 2009, Hong Kong, China.
 
                    - Program Committee, The First International Conference on Security and Privacy in Mobile Information and Communication Systems (MobiSec 2009), IEEE Communications Society, Piedmont Region, Italy, June 3-5, 2009. 
 
                    - Program Committee, The 5th International Workshop on Security in Systems and Networks (SSN2009), IEEE CS, May 29, 2009, Rome, Italy
 
                    - Program Committee, The IEEE 23rd International Conference on Advanced Information Networking and Applications (AINA-09), IEEE CS, University of Bradford, Bradford, UK, May 26-29, 2009.
 
                    - Program Committee, The 24th IFIP International Information Security Conference (SEC-09), Springer - Conference Proceeding, Pafos, Cyprus, May 18-20, 2009.
 
                    - Program Committee, Seventh Annual IEEE International Conference on Pervasive Computing and Communications (PerCom 2009), IEEE CS, Dallas, 16 - 20 March, 2009.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
 
                    - Program Committee, Third International Workshop on Secure Software Engineering (SecSE 2009), IEEE CS, Fukuoka, Japan, March 16th-19th 2009.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
 
                    - Program Committee, The tenth international conferences on High-Performance Computing (HPC Asia 2009), IEEE CS, Kaohsiung, Taiwan, March 2~6, 2009.
 
                    - Program Committee, The 24th Annual ACM Symposium on Applied Computing (SAC 2009), Special Track on Computer Networks, Honolulu, Hawaii, USA, March 8 - 12, 2009.
 
                    - Program Committee, The Sixth IEEE Consumer Communications and Networking Conference (CCNC 2009), IEEE Communications Society, Las Vegas, USA, Jan. 11-13, 2009.
 
                    - International Advisory Board, 2008 International Conference on Security Technology (SecTech 2008), Hainan Island, China, December 13 ~ 15, 2008. 
 
                    - Program Committee, 13th European Symposium on Research in Computer Security (ESORICS-08), Springer-LNCS, Malaga, Spain, 6-8 October, 2008.
 
                    - Program Committee, The 2008 IFIP International Conference on Network and Parallel Computing (NPC-08), Springer-LNCS, Shanghai, China, Oct. 18-20,2008
 
                    - 2nd International Workshop on Design and Integration Principles for Smart 
Objects (DIPSO 2008), Seoul, Korea, September 21, 2008.
 
                    - Program Committee,2008 International Workshop on Multimedia Security in Communication (MUSIC'08), Hangzhou, China, Aug. 25th-27th, 2008.
 
                    - Advisory 
committee,  Thee thirteenth International Conference on Asia-Pacific Computer Systems Architecture (ACSAC-08), Springer-LNCS, 
                    Hsinchu, Taiwan, August 4-6, 2008.  
 
                    - Program Committee, 32nd Annual IEEE International Computer Software and Applications Conference (COMPSAC 2008), IEEE CS, Turku, Finland, July 28 - August 1, 2008.
 
                    - Program Committee, 3rd IEEE International Workshop on Security, Trust, and Privacy for Software Applications (STPSA 2008),  IEEE CS, Turku, Finland, July 28 - August 1, 2008.
 
                    - Program Committee,The 5th Annual International Conference on Mobile and Ubiquitous 
                    Systems: Computing, Networking and Services (MOBIQUITOUS 
                    2008),  Trinity College Dublin, Ireland, 21st 
                    - 25th July 2008.
 
                    - Program Committee, 
International 
Symposium on  Pervasive 
                    Grid,  IEEE CS, 
                    São Paulom, Brazil, 
                    July 16-18, 2008
 
                    - Program Committee,  
4th International Workshop on Security, Privacy and Trust in Pervasive and Ubiquitous Computing (SecPerU08),  Sorrento, Italy, July 10, 2008.
 
                 
                
                    - Program             Committee, The 5th International Conference on Autonomic and Trusted Computing (ATC-08), Springer-LNCS, Oslo, Norway, June 23-26, 2008.
 
                    - Publicity Committee, The 2008 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS 2008),  Edinburgh, UK, 
                    June 16-18, 2008.
 
                    - Program             Committee, The 2008 International Conference on Grid and Pervasive Computing (GPC-08), Springer-LNCS, 
                    Kunming, Yunnan, China, May 25-28, 2008.
 
                    - Program Committee, Florida Artificial Intelligence Research Symposium (FLAIRS-21) - Special Track on "Smart Humans in Smart Environments (SHISE-08), AAAI, Miami, Florida, May 15-17, 2008.
 
                    - Program             Committee, Workshop 
                    in Information Security Theory and Practices 2008: Smart 
                    Devices, Convergence and Next Generation Networks (WISTP-08), Springer-LNCS, Sevilla, 
                    Spain, May 13-16, 2008.
 
                    - International Advisory Board, The 2nd International Conference on Information Security and Assurance (ISA2008), IEEE CS, Busan, Korea , April 24-26, 2008.
 
                    - Program Committee, The Sixth Annual IEEE International Conference on Pervasive Computing and Communications (Percom 2008), IEEE CS, Hong Kong, March 17 - 21, 2008.
 
                    - Program Committee, ACM Symposium on Applied Computing 2008 - Special Track on Ubiquitous Computing: Ubiquitous and Pervasive eCommerce and eBusiness, ACM SIGAPP, Fortaleza, Brazil, March 16-20, 2008.
 
                    - Director of Korean Science & Engineering Research Support Center (SERSC) (2007-).
 
                    - Program Committee, The IEEE 22nd International Conference on Advanced Information Networking and Applications (AINA-08), IEEE CS, GinoWan, Okinawa, Japan, March 25 - 28, 2008.
 
                    - Program             Committee, The 4th International Conference 
            on Embedded and Ubiquitous Computing (EUC-07), 
Springer-LNCS, Taiwan, Dec. 
            17-20, 2007.
 
                    - Steering Committee, The 2007 International Symposium on Technologies and Applications of Radio Frequency Identification (TARFID 2007), IEEE CS, Jeju Island, Korea, October 11-13, 2007.
 
                    - Steering Committee, The 2007 International Workshop on Embedded System Architectures for Pervasive Devices and Computers (WESAPEC 2007), 2007.
 
                    - Program             Committee, IFIP International Conference on Network and Parallel 
            Computing (NPC2007), 
Springer-LNCS, 
            Dalian, China, Sept. 18-21, 2007.
 
                    - Program Committee, The 2007 IFIP International Workshop on Information and Storage Management 
for Ubiquitous Computing (ISMUC2007), Springer-LNCS, Dalian, China, Sept. 18-21, 2007.
 
                    - Steering Committee, The 2nd International Workshop on Ubiquitous Application & Security 
Service (UASS-07), IEEE-CS / Springer-LNCS, Malaysia, Sept. 2-5, 2007. 
 
                    - Program Committee, The 2007 International workshop on Distributed Data and Storage Systems Management (DDSM’07), IEEE-CS / Springer-LNCS, Malaysia, Sept. 2-5, 2007. 
 
                    - Program                         Committee, the International Conference on  Electronic 
                        Commerce and Web Technologies (EC-Web 
                        2007), Springer-LNCS, Regensburg, Germany, Sep. 
                        3 - 7, 2007.
 
                 
                -                         International Advisory Board, The first Russia-Taiwan 
                        symposium on Methods and Tools of Parallel Programming 
                        of Multi-computers (MTPP-2007), 
                        Springer-LNCS, Pereslavl-Zalessky, Russia, Sept. 2-3, 
                        2007.
 
                - Program Committee, The 2nd Annual Workshop on Digital Forensics and Incident Analysis (WDFIA 2007), IEEE-CS, Samos, Greece, August 27-28, 2007.
 
                
                    - Program Committee,The 
                    4th Annual International Conference on Mobile and Ubiquitous 
                    Systems: Computing, Networking and Services (MOBIQUITOUS 
                    2007),  Philadelphia, USA, August 6-10, 2007.
 
                    - Program Committee, Fourth European PKI Workshop (EUROPKI '07), Springer-LNCS, Mallorca, Spain, 28-30 June, 2007.
 
                 
                
                    - Program 
            Committee, The International Workshop on 
                        Application and Security Service in Web and pervasive 
                        eNvirionments (ASWAN ’07),  Springer-LNCS, 
                        HuangShan (Yellow 
                        Mountains), China, June 16-18, 2007.
 
                    - Program 
            Committee, The Second International Conference on Grid and Pervasive 
            Computing (GPC 
            2007), Springer-LNCS, 
            Paris, France, May 2-4, 2007.
 
                    - Program Committee, The IEEE 21st International Conference on Advanced Information 
            Networking and Applications (AINA-07), 
            IEEE CS, Canada, May 21-23, 2007.
 
                    - Program Committee, The 2007 IEEE International Symposium on Ubisafe Computing 
            (UbiSafe-07), 
            IEEE 
            CS, Canada,  May 22, 
             2007.
 
                    - 
Program Committee, First International Workshop on Smart Homes for Tele-Health 
            (SmarTel'07),  IEEE 
            CS, Canada,  May 21, 2007.
 
                    - Program Committee, ACM Symposium on Applied Computing 2007 Special Track 
            on Ubiquitous Computing (UC): Digital Spaces,  Services and 
                        Content, 
            ACM SIGAPP, Korea, March 11-15 , 2007.
 
                    - Program Committee, 1st Workshop on Pervasive Computing Environments and 
            Services (PCES 07), IEEE 
            CS, Italy, Feb. 7-9, 2007. 
 
                    - Program Committee, Special session on Ubiquitous Multimedia Service (UMS 
            '07), within International Multimedia Modeling Conference (MMM) 2007, Springer-LNCS, Singapore, Jan. 
            9, 2007.
 
                    -             Member, Task Force  in the IEEE Intelligent Ubiquitous Computing, 
            under 
            the Intelligent System Applications Technical Committee of the IEEE 
                        CIS Society, Since 2006.
 
                 
            
             
            [Editor on Journals, Books, and Proceedings]
            
	    - Editor-in-Chief, Human-centric Computing and Information Sciences (HCIS), Springer,  Since 2011.
 
                - Editor-in-Chief, Journal of Convergence  (JoC), FTRA Publishing,  Since 2010.
 
                - Editor-in-Chief, International Journal of Information Technology, Communications and Convergence  (IJITCC), InderScience,  Since 2009.
 
                - Editorial Board, International Journal of Computational Science and Engineering  (IJCSE), InderScience,  Since 2009.
 
                - Editorial Advisory Board, The book on Formal and Practical Aspects of Autonomic 
Computing and Networking: Specification, Development and Verification (ACN2010), IGI 
Global, 2010.
 
                - Editorial Board, Personal and Ubiquitous Computing(PUC), Springer, Since 2009.
 
                - Editorial Review Board, International Journal of Secure Software Engineering (IJSSE), IGI-Global, PA, USA, Since 2009.
 
                - Editorial Board, International Journal of Ad Hoc and Ubiquitous Computing (IJAHUC) indexed by SCI-E, InderScience,  Since 2009.
 
                - Associate Editor,  International Journal of Ambient Intelligence and Humanized Computing (JAIHC), Springer, Since 2009.
 
                - Advisory Editor,  Journal of Information Processing Systems (JIPS),  KIPS, Since 2009.
 
                - Editorial Board, The International Journal of Communication Networks and Distributed Systems (IJCNDS), InderScience, Since January, 2009
 
                - Liaison Editor of Korea / Editorial Board, Journal of Internet Technology (JIT) indexed by SCI-E, NATIONAL DONG HWA UNIV, COMPUTER & IT CENTER, HUALIEN, TAIWAN, Since November, 2008.
 
                - Editorial Board, IET Communications indexed by SCI, IET, Since November, 2008 (2008-2011).
 
                - Advisory Board, The ICST Innovations Book Series, Wiley, Since November, 2008. 
 
                - Editorial Board, the Computer Journal indexed by SCI-E, Computer Security area, Oxford University Press, Since October, 2008.
 
                - Editorial Board, the Journal of Supercomputing (JoS) indexed by SCI, Springer, Since October, 2008.
 
                - Editorial Board, Journal of Network and Computer Applications (JNCA) indexed by SCI-E, Elsevier, Since August, 2008.
 
                - Associate Editor, Bahria University Journal of Information and Communication Technology (BUJICT), Bahria University, Since May, 2008.
 
                - Associate Editor, International Journal of Communication Systems (IJCS) indexed by SCI-E, John Wiley, Since March, 2008.
 
                - Editorial Board, International Journal of Autonomic Computing (IJAC), InderScience, Since January, 2008.  
 
                - Associate Editor, Security and Communication Networks (SCN), John Wiley, Since August, 2007.
 
                - Editorial Review Board, International Journal of Digital Crime and Forensics (IJDCF), IGI Global, Since January, 2008.
 
                - Associate Editor,  Telecommunication Systems (TS) indexed by SCI-E, Springer, Since November, 2008-2010.
 
                - Associate Editor, International Journal of Smart Home (IJSH), SERSC, January, 2006 ~ March, 2007. 
 
                - Co-editor 
of Proceedings of the 2007 International Conference on Embedded and Ubiquitous 
Computing (EUC-07), Lecture Notes in Computer Science, Vol. 4809, Springer, 
2007.
 
            
             Guest Editor, Advisory Board  on Journals  and Books
            
                
                    - Guest Editor of Special Issue on "Bio-inspired computing for Hybrid Information Technology", Soft Computing indexed by SCI-E (Springer), 2011 --> Call for Papers (Submission due: July 31, 2010).
 
                    - Guest Editor of Special Issue on "Ubiquitous Computing for Communications and Broadcasting", INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS indexed by SCI-E (Wiley), 2011  
 
                    - Guest Editor of Special Issue on "Multimedia Technology for Pervasive Computing Environmenty", The Journal of Supercomputing indexed by SCI (Springer), 2010 
 
                    - Guest Editor of Special Issue on "Information and Future Communication Security", Computer Communications indexed by SCI-E (Elsevier), 2010.
 
                    - Guest Editor of Special Issue on "Intelligent Internet Computing : Applications and Security Systems", Journal of Internet Technology indexed by SCI-E (Ministry of Education - Taiwan), 2010. 
 
                    - Guest Editor of Special Issue on "Multi-Agent & Distributed Information Security", IET Information Security, indexed by SCI-E (IET), 2010.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
 
                    - Guest Editor of Special Issue on "Advances in Cryptography, Security and Applications for Future Computer Science", COMPUTERS & MATHEMATICS WITH APPLICATIONS indexed by SCI (PERGAMON-ELSEVIER SCIENCE), 2010.
 
                    - Guest Editor of Special Issue on Special Issue on "Network Security and Digital Forensics  in Next Generation Communications", Wireless Communications and Mobile Computing indexed by SCI-E (Wiley Interscience), 2010
 
                    - Guest Editor of Special Issue on "Advanced Intelligent Multimedia Applications for Next Generation Environments", MULTIMEDIA TOOLS AND APPLICATIONS indexed by SCI-E (Springer), 2010
 
                    - Guest Editor of Special Issue on "Algorithm and Distributed Computing in Wireless Sensor Networks", The Journal of Cluster Computing indexed by SCI-E (Springer), 2009 / 2010 
 
                    - Guest Editor of Special Issue on "Special Issue on Intelligent Multimedia System and Data Management for Ubi-Com", COMPUTING AND INFORMATIONS indexed by SCI-E (Springer), 2010 
 
                    - Guest Editor of Special Issue on "Advanced Mobile Applications and Intelligent Multimedia systems for Ubi-Com", Mobile Networks and Applications indexed by SCI-E (Springer), 2010 
 
                    - Guest Editor of Special Issue on "Secure Communications and Data Management in Ubiquitous Services", INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS indexed by SCI-E (Wiley InterScience), 2009  
 
                    - International Advisory Board, Book on "Pervasive and Smart Technologies for Healthcare: Ubiquitous Methodologies and Tools, IGI Global, 2009
 
                    - Guest Editor of Special Issue on "Multimedia Services and Applications", Journal of Universal Computer Science indexed by SCI-E (Springer), 2009 
 
                    - Guest Editor of Special Issue on " Context-aware 
                    Services for Ubiquitous Applications", Cybernetics 
                    and Systems indexed by SCI-E (Taylor 
                    & Francis Journal), 2009 
 
                    - Guest Editor of Special Issue on "Security for Multimedia and Ubiquitous Applications", Journal of Telecommunication Systems indexed by SCI-E  (Springer), 2009 
                    
 
                 
                
                
                    
- Guest Editor of Special Issue on "Intelligent Systems and Services for Ubiquitous Computing",  Journal of Personal and Ubiquitous Computing indexed by SCI-E (Springer), 2009
 
                
                - Guest Editor of Special Issue on "Systems, Communications and Services in Smart Homes", The Computer Journal indexed by SCI-E (Oxford), 2008
 
                - Guest Editor of Special Issue on Intelligent Ubiquitous Computing: Applications and Security issues, Internet Research indexed by SCI-E (Emerald), 2008
 
                - Guest Editor of Special Issue on " Intelligent Systems forFuture Generation Wireless Networks ", EURASIP Journal on Wireless Communications and Networking indexed by SCI-E (Hindawi)
 
                - Guest Editor of Special Issue on "Secure Multi-Mode Systems and their Applications for Pervasive Computing", Computer Communications indexed by SCI-E (Elsevier), 2008 
 
                - Guest Editor of special issue on Special Issue on the 2007 International Workshop on Service, Security and its Data management technologies for Ubiquitous Computing, International Journal of Ad
Hoc and Ubiquitous Computing (Inderscience), 2008 
 
                - Guest Editor of Special Issue on "Information Security and data protection in Future Generation Communication and Networking", Wireless Personal Communications indexed by SCI-E (Springer), 2008 
 
                - Guest Editor of Special Issue on "Embedded System and Software for Intelligent Pervasive Computing", Intelligent automation & Soft Computing - AutoSoft indexed by SCI-E (WAC), 2008 
 
                - Guest Editor of Special Issue on Intelligent Systems and Smart Home (IS2H), INFORMATION SYSTEMS FRONTIERS 
                        JOURNAL indexed by                     SCI-E (Springer), 2008.
 
                - Guest Editor of special issue on Special Issue on the 2007 International Conference on Multimedia and Ubiquitous Engineering,
                        International Journal of Ad
Hoc and Ubiquitous Computing (Inderscience), 2008.
 
                - Guest Editor of special issue on Special Issue on Multimedia and Ubiquitous Engineering, the Journal of Supercomputing indexed by                     SCI (Springer), 2008. 
 
                - Guest Editor of special issue on Special Issue on the 2006 International Workshop on Smart Home, International Journal of Smart Home (SERSC), January, 2007
 
            
             
            [Society 
            Member]
            
                
                    - u-Manufacturing 성과관리위원, (재)마산벨리 : Since 2008.9  (Domestic)
 
                    - 정보보호분과장, 한국정보기술학회 (KIIT): Since 2008.8  (Domestic)
 
                    - 학술이사, 한국멀티미디어학회 (KMMS) : Since 2008.1  (Domestic)
 
                    - 종신회원, 한국멀티미디어학회 (KMMS) : Since 2004  (Domestic)
 
                    - 평생회원, 한국정보기술학회 (KIIT): Since 2008  (Domestic)
 
                    - 정회원, 한국정보보호학회 (KIISC) : Since 2004   (Domestic)
 
                    - 정회원, 한국통신학회 (KICS) : Since 2005   (Domestic)
 
                    - 정회원, 한국디지털포렌식학회 (KDFS), Since 2007   (Domestic)
 
                    - Member, IEICE Society, Since 2005  
 
                    - Member, IEEE /  IEEE Computer Society, IEEE Communications Society Since 2008