- 2004 - 2007 助教授
- 2004 - 2007 Associate Professor,
- 2007 - Kumamoto University Graduate School of Science and Technology
- 2007 - Associate Professor, ,Graduate School of Science and Technology(Engineering group),Kumamoto University
- 2000 - 2004 Kumamoto University Faculty of Engineering
- 2000 - 2004 Associate Professor,Faculty of Engineering,Kumamoto University
- 1997 - 2000 Osaka University
- 1997 - 2000 Research Associate,Osaka University
- 1994 - 1997 Osaka University
- 1994 - 1997 Research Associate,Osaka University
- 1991 - 1994 Osaka University
- 1991 - 1994 Research Associate,Osaka University
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