- 2016 - 現在 Oita University Faculty of Education
- 2008 - 2016 Oita University
- 2007 - 2008 Oita University
- 1999 - 2007 Oita University
- 1999 - 2001 Oita Uni, Faculty of Education and Wellfare Science, Assistant Professor
- 1998 - 1999 Oita University Faculty of Education
- 1998 - 1999 Oita uni, Faculty of Education, Assistant Professor
- 1995 - 1998 Oita uni, Faculty of Education, lecturer
- 1994 - 1998 Oita University Faculty of Education
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