- 2021 - 2025 The Institutional Innovation in Contemporary China:
- 2020 - 2025 Comparative Empirical and Public Policy Study on Civil Society and Urban Governance between Japan and Asia
- 2016 - 2021 Comparative Local Governance (State-Civil Society Relations) in Asia and Japan
- 2013 - 2017 The major mechanism of expansion of social protests in contemporary China: liberation of cognition · political opportunity structure · diversification of mobilizing means
- 2010 - 2015 A Comparative and Empirical Study of the Structural Changes in Politics and Transformations in Pressure Groups, Policy Networks, and Civil Society in Japan since 2009
- 2011 - 2012 バングラデシュ市民社会の民主化:日本の自治会モデルの検討
- 2010 - 2010 政治構造変動と圧力団体、政策ネットワーク、市民社会の変容に関する比較実証研究
- 2005 - 2009 A Comprehensive Empirical Study on the Three-Level Civil Society Structure and Governance in Japan, South Korea, the United States, Germany, and China in Comparative Perspective
- 2004 - 2005 つくば市「つくば市総合計画草案作成共同研究」
- 2005 - Three-Level Structure of Civil Society and Governance: A Comprehensive Comparative Study of Japan, Korea, the United State of America, Germany, and China
- 2002 - 2004 Systematic Comparative Study of Public Policies and Policy Processes in Japan and Korea
- 2000 - 2003 Comparative and Empirical Study on Interest Groups and Civil Society Organization in China and other Countries
- 2003 - 多元的共生社会に関する国際比較の研究
- 2003 - 「多元的共生に関する国際比較」の研究
- 2003 - Special Research Project on Civil Society, The State and Culture in Comparative Perspective
- 1998 - 2001 Comparative Political Analysis on Global Environmental Network in Western and Asian Countries
- 2000 - The State of Civil Society in Japan
- 1998 - 2000 日韓両国の公共政策過程に関する比較研究
- 1997 - 1999 Empirical Analysis of Global Environmental Policy Networks in Japan, the United States, Germany and Korea in the Comparative Political Perspective
- 1998 - 1998 日本・韓国の政治体制と公共政策に関する体系的比較のための企画調査
- 1996 - 1998 Political Transformation of Japan and Europe
- 1996 - 1997 Comparative Study on Political Regime Change and Transformation of Interest Group Sector in Japan and Korea
- 1995 - 1997 Comparative Analysis of Environmental Policy Network in Japan, USA, Germany and Korea
- 1997 - Comparative Study on Civil Society Organization in the world: Japan, Korea, the U.S., Germany, China, Russia, Turkey, Philippine, Brazil,Bangladesh, Uzubekistan
- 1997 - Comparative Analysis on Global Environment Policy Networks among Japan, US, Germany, Korea and China
- 1996 - Comparative Study on Public Policies and Policy Process in Korea and Japan
- 1994 - 1995 Comparative/Statistical Political Analysis on Formation and Transformation of Interest Group Structure in the Advanced Industrialized Countries
- 1994 - 1994 55年体制と戦後政治
- 1992 - 1993 Comparative Analysis of Foreign Lobby between U.S.A and Japan : An Analysis of Lobbying and Lobby in the interdependent societies
- 1988 - 1988 八〇年代社会変容の,利益団体及び公私の交錯領域に与えた影響に関する実証的研究
- 1988 - Comparative Statistical Analysis on Foreign Lobby, Lobbying, Interest Group
- 1985 - 1987 Role of Political Elites in the Policy Process
- 1983 - 1983 大都市政治における利益団体の動態と利益統合過程に関する比較実証研究
- 1982 - 1982 大都市政治における利益団体の動態と利益統合過程に関する比較実証研究