Doctor of Philosophy, University Illinois Urbana-Champaign, 1999.
Assistant professor Michigan State University, Lansing, 2000—2002. Associate professor Seoul National University, Republic of Korea, since 2002. Visiting lecturer University Illinois at Urbana-Champaing, 1999.
Corporal Korean Army, 1991-1992, Korea.
Member of Institute of Electrical and Electronics Engineers, Association Computing Machinery, Korea Informaiton Science Society (life).
Married Yookyung Chung, March 14, 1975. 1 child Sungho.