- 1988 - 1994 Kurume Institute of Technology
- 1988 - 1994 Kurume Institute of Technology, Professor
- 1986 - 1988 Fukuyama University
- 1986 - 1988 Fukuyama University, Assistant Professor
- 1984 - 1986 福岡工業短期大学 助教授
- 1984 - 1986 Fukuoka junior College of Technology, Assistant Professor
- 1976 - 1984 Nagoya University
- 1976 - 1984 Nagoya University, Research Assistant
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