- 1987 - 1996 Yamaguchi University
- 1987 - 1996 Associate Professor, Faculty of Engineering,
- 1996 - - 山口大学 教授
- 1996 - - Professor, Yamaguchi University
- 1965 - 1987 Tokyo Institute of Technology
- 1965 - 1987 Research Associate, Faculty of Engineering,
- Yamaguchi University
- Tokyo Institute of Technology
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