- 1993 - 2001 University of Miyazaki
- 1993 - 2001 Miyazaki University, Assistant Professor
- 2001 - - 宮崎大学 教授
- 2001 - - Miyazaki University, Professor
- 1971 - 1993 University of Miyazaki
- 1971 - 1993 Miyazaki University, Lecturer
- 1970 - 1971 University of Miyazaki
- 1970 - 1971 Miyazaki University, Research Assistant
- University of Miyazaki Faculty of Education and Culture
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