His teaching and research interests include Object-Oriented Programming, Design and Implementation of Concurrent OO Programming Language, Distributed Computing, etc. He is currently an editor of Korea Information Processing Society, and the Programming Language Track Chair of the ACM SAC'99. He has been served many years as a Korean Delegate to ITU-T SG10 to work for extending OO concepts into the CHILL programming language. Currently he has co-organized the Object-Oriented Technology Study Group in Korea.