Affiliation: | (1) School of Electrical Engineering, Seoul National University, Shillim-dong, Kwanak-ku, Seoul, 151-742, Korea;(2) School of Electrical Engineering, Seoul National University, Shillim-dong, Kwanak-ku, Seoul, 151-742, Korea;(3) Human Robot Research Center, Korea Institute of Science and Technology, Seoul, 135-081, Korea |