- 2006 - 2007 助手
- 2006 - 2007 Research Associate,
- 2007 - Kumamoto University Graduate School of Science and Technology
- 2007 - Assistant Professor, ,Graduate School of Science and Technology(Science group),Kumamoto University
- 1997 - 2006 助手
- 1997 - 2006 Research Associate,
- 1990 - 1997 Kumamoto University
- 1990 - 1997 Research Associate,Kumamoto University
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