- 2004 - 現在 群馬大学大学院 教授
- 1998 - 2004 Gunma University
- 1998 - 2004 Faculty of Engineering, Gunma University, Associate Professor
- 2004 - -Current Graduate School of Engineering, Gunma University, Professor
- 1994 - 1998 Gunma University
- 1994 - 1998 Faculty of Engineering, Gunma University, Assistant Professor
- 1987 - 1994 NEC Corporation Central Research Laboratories
- 1987 - 1994 Central Research Laboratories, NEC Corporation
- 1985 - 1986 三菱総合研究所
- 1985 - 1986 Mitsubishi Research Institute.
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