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- Chairman (1990 - 1992, 1998 - present) - Professor, Department of Physics, Sung Kyun Kwan University, Korea (1985 - present) |
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- Applied Physics Laboratory / Department of Bioengineering, University of Washington, U.S.A. (1996 - 1998) - National Center for Physical Acoustics / Department of Physics and Astronomy, University of Mississippi, U.S.A. (1989 - 1993) - Department of Physics, Naval Postgraduate School, U.S.A. (1985 - 1987) |