- 2023 - 2027 行政過程における案件処理の方法と妥当性の確保:行政相談制度等を中心に
- 2020 - 2023 答申と裁決等の比較対照分析による新行政不服審査法の運用実態の解明と問題点の解決
- 2017 - 2022 The formulation and development of the Japanese Administrative Procedure Act
- 2016 - 2022 A study on amended Administrative Complaint Review Act.
- 2014 - 2018 Research on the Codification of Administrative Law
- 2014 - 2018 new paradigm of administrative self - remedy system under globalization
- 2013 - 2016 A study on procedural principles in administrative appeal procedure.
- 2011 - 2012 A research on the administrative appeal system in Germany and Austria
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