- 2023 - 2028 Functional systems of realization of global norms through activities of specialized agencies
- 2022 - 2026 Theory and practice of international dispute settlement in the era of the League of Nations
- 2022 - 2026 Settling the Issues of the Public Law after Radical Changes in the Field of Kelsen's Pure Theory of Law and Arranging the Academic Exchanges for the Further Development
- 2022 - 2026 国際連盟期の国際紛争解決に関する思想と実践
- 2021 - 2024 自殺抑止の公法理論ー自殺類型論を媒介とした教育・法制度の枠組み構築
- 2018 - 2023 国家内部の相互コントロールによるグローバル法形成-その条件の究明
- 2017 - 2021 comparative studies of public Laws with historical contexts in the era of globalization
- 2012 - 2015 Studies of the "Kelsen-Renaissance" in German science of public law
- 2011 - 2012 Theory of the constituent power: the significance and the limit of the theological origin
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