He is currently Professor at Division of Electrical and Computer Engineering, Hanyang University, Seoul Korea. He is leading Embedded Software System Lab. He did his BS and MS in Dept. of Computer Science, Seoul National University, Seoul, Korea in 1990 and 1992, respectively. He received his Ph. D in Computer Science from University of Minnesota in 1997. Before joining Hanyang University in 1999, he worked at Intel Corp. as Server Performance Analyst. His research interests include Network Traffic Modeling, Analysis and Characterization, Multimedia system and networking, File and Storage subsystem , Lower power Storage System. In 2006, Multimedia File System project funded by Samsung Electronics was awarded “Best Academy-Industry Collaboration Practice in Samsung Electronics”. In 2007, he was awarded “National Research Lab” grant which is highly selective and prestigeous governmental grant.