- 2020/04 - 現在 Kurume University Biostatistics Center, Graduate School of Medicine professor, director
- 2018/04 - 現在 Radiation Effects Research Foundation Department of Statistics Consultant
- 2016/01 - 現在 United Nations Scientific Committee for Effects of Atomic Radiation (UNSCEAR) Scientific Expert
- 2023/04 - 2024/03 Eikei University of Hiroshima Department of Social System Design Visiting lecturer
- 2022/04 - 2023/03 Fukuoka Women's University
- 2021/04 - 2023/03 Nagoya City University School of biology and integrated sciences
- 2018/04 - 2020/03 Kurume University Biostatistics Center, Graduate School of Medicine Professor
- 2011/04 - 2018/03 Kurume University Biostatistics Center, Graduate School of Medicine Visiting Lecturer
- 2009/04 - 2018/03 Hiroshima University Faculty of Pharmaceutical Sciences Visting Lecturer / Visiting Associated Professor
- 2008/04 - 2018/03 Radiation Effects Research Foundation Department of Statistics Associate Senior Scientist
- 2008/06 - 2008/12 US National Cancer Institute Radiation Epidemiology Branch Researcher (NIH special volunteer)
- 2004/10 - 2008/03 Radiation Effects Research Foundation Department of Statistics Research Scientist
- 1998/09 - 2004/08 Department of Statistics, Iowa State University, USA Graduate RA/TA
- 1995/01 - 1997/12 Moratuwa University, Sri LankaDepartment of Computer Science and Engineering, Lecturer
- 1993/04 - 1994/07 NEC Software Chugoku
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日本統計学会
, Japan Health Physics Society
, The Japanese Radiation Research Society
, International Society for Clinical Biostatistics
, Radiation Research Society
, THE BIOMETRIC SOCIETY OF JAPAN
, Society of Risk Analysis
, American Statistical Association