- 2014/04 - Yokohama National University Faculty of Engineering Professor Emeritus
- 2001 - 2014/03 横浜国立大学工学研究院 教授
- 1997 - 2001 Yokohama National University
- 1997 - 2001 Professor, Faculty of Engineering, Yokohama National University
- 2001 - - Professor, Faculty of Engineering, Yokohama National University
- 1984 - 1997 Yokohama National University College of Education
- 1984 - 1997 Associate Professor, Faculty of Education, Yokohama National University
- 1997 - Yokohama National University College of Education
- 1997 - Professor, Faculty of Education, Yokohama National University
- 1983 - 1984 Yokohama National University College of Education
- 1983 - 1984 Lecturer, Faculty of Education, Yokohama National University
- 1977 - 1983 Yokohama National University College of Education
- 1977 - 1983 Research Associate, Faculty of Education, Yokohama National University
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