Professional Activities
- Jan. 2017 ~ Current : Executive Editors, Journal of Information Processing System(JIPS-Scopus)
- Jan. 2014 ~ Current: Associate Editor, Journal of Human-centric Computing(HCIS)
- Jan. 2014 ~ Current: Associate Editor, Journal of Supercomputing(JoS-SCI)
- Sep. 2013 ~ Current : Associate Editor, International Journal of Grid and Utility Computing(IJGUC-Scopus)
- Mar. 2013 ~ Current : Professor, Dept. of Multimedia Engineering, Dongguk University
- Oct. 2010 ~ Current : Editor, Journal of Internet Technology(JIT-SCIE)
- Mar. 2010 ~ Current : Editor, Korea Internet & Security Agency (KISA)
- Jan. 2010 ~ Current : Editor, International Journal of Embedded Systems (IJES) Inderscience Publishers
- Feb. 2003 ~ Current : Chairman, IEC/TC 108 Korean Agency for Technology and Standards
- Nov. 2002 ~ Current : Committee, IEC/TC 100 Korean Agency for Technology and Standards
- Aug. 2002 ~ Current : Committee, ISO/IEC JTCI SC25
- Feb. 2018 ~ Jan. 2020 : Chairman of Information Security, SOC-ICT Council
- Sep. 2017 ~ Aug. 2019 : ICT Research Convergence Professional Committee, National Research Foundation of Korea (NRF)
- Oct. 2010 ~ Dec. 2019 : Associate Editor, International Journal of Communication Systems(IJCS-SCIE)
- Aug. 2017 ~ Jul. 2019 : Committee for the Development of Next Generation Information Computing Technology, Ministry of Science and ICT (MIST)
- Jan. 2017 ~ Dec. 2017 : President, Korea Information Processing Society (KIPS)
- Jul. 2012 ~ Dec. 2016 : Editions-in-Chief, Journal of Information Processing System(JIPS-Scopus)
- Dec. 2013 ~ Nov. 2015 : Professional Committee, Korea Institute of Health and Welfare Information Development
- Mar. 2010 ~ Mar. 2012 : Advisory Board, Korea Internet & Security Agency (KISA)
- Jan. 2009 ~ Dec. 2010 : Managing Editor, Journal of Information Processing System(JIPS-Scopus)
- Jan. 2009 ~ Dec. 2010 : Director, Korea Information Processing Society (KIPS)
- Aug. 2003 ~ Sep. 2008 : Appraisal Committee, University Industrial Technology Force(UNITEF) for Patents
- Apr. 2006 ~ Sep. 2008 : Director, Korea Culture & Contents Technology Association
- Apr. 2006 ~ Dec. 2007 : Consultation Committee, Korea Civil Service Commission
- Feb. 2006 ~ Dec. 2007 : Committee of IT Education and Accreditation Committee, Korea Information Science Society (KISS)
- Jan. 2006 ~ Dec. 2007 : English Journal Editorial Board, Korea Information Processing Society (KIPS)
- Mar. 2003 ~ Feb. 2005 : Journal Editorial Board, Korea Multimedia Society (KMS)
- Sep. 1993 ~ Feb. 2013 : Professor, Dept. of Computer Engineering, Wonkwang University