He received the Ph.D. degree in Computer Science from University of California, Los Angeles, USA, in 2008, and the B.S. and the M.S. degree in Mechanical Engineering from Seoul National University, Korea, in 1996 and 2000, respectively. Prior to joining KAIST in 2013, he was an Assistant Professor at Gwangju Institute of Science and Technology from 2010 to 2013, and a Postdoctoral researcher at UCLA from 2008 to 2009, and at Honda Research Institute, CA, from 2009 to 2010. His research interests include physics-based computer graphics/animation and humanoid robotics, specifically in autonomous human characters and humanoid robots, biomechanical human modeling, and physics simulation.