Professor, School of Environmental Engineering, Seoul University, South Korea, Former President of Korea University Mountain Alliance, Ph.D. in Environmental Engineering from Hokkaido University, Japan. He is currently a professor in the Department of Environmental Engineering at Seoul University, South Korea. He has served as the chairman and vice chairman of the Korea University Mountain Alliance, the external chairman of the Korea Electronic Environment Association, and the chairman of the 2011 Daegu World Congress Organizing Committee.