- 1979 - 1989 Tohoku University Faculty of Engineering
- 1979 - 1987 Associate Protessor, Faculty of Engineering,
- 1976 - 1979 Tohoku University Faculty of Engineering
- 1976 - 1979 Lecturer, Faculty of Engineering, Tohoku University
- 1970 - 1976 Tohoku University Faculty of Engineering
- 1970 - 1976 Researc Assoiate, Faculty of Engineering, Tohoku
- Tohoku University
- University
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