Junghwa Hong is a professor of the Department of Control and Instrumentation Engineering, Korea University, Sejong, South Korea. He received B.S. and M.S. degrees in Mechanical Engineering (1988) at Korea University, Republic of Korea, and in Engineering Mechanics (1993) at University of Wisconsin-Madison, USA, respectively. He received a Ph.D. degree in Biomedical Engineering (1996) at the Marquette University, USA. Following the Senior Researcher for the safety in the automobile industry (Technical Center, General Motors, USA), he went to Rehabilitation Engineering Research Center, the Republic of Korea as a Principal Research Director for the biomechatronic researches for the disables and elderly in 2000. Currently, he is a professor of the Department of Control and Instrumentation Engineering, Korea University in charge of various research projects related to biomechatronics, biosystem control, and rehabilitation engineering.