- 2017 - 2020 Concept Analysis of Freedom Using Popular Songs as Text
- 2017 - 2020 Republicanism, Constitutionalism, and Liberalism in American Thought: Ideas for Controlling Democracy
- 2013 - 2016 Republicanism and Constitutionalism in the American Political Thought
- 2013 - 2015 デモクラシーと宗教:政治思想史、政治理論、地域研究の総合的アプローチ
- 2006 - 2008 Toward Political Economy of Social Justice : Synthesis of Researches by Economics, Political Science, and Legal Studies
- 2006 - 2007 Tocqueville and the Political Theory of the 20th Century-An Intellectual History on the Formation of Liberal Democracy
- 2004 - 2005 Tocpueville and Two Models of Democracy : A Comparative Historical Study of American and French political Cultures
- 2000 - 2002 Medical Policies in the Aged Societies - Bioethics and Budget Constraints
- 2000 - 2001 Reconstructing the Welfare State : Health Care Reforms in Italy, Japan, the UK and the USA.
- 2000 - 2000 高齢化時代における医療政策-生命倫理と予算制約
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