- 2020 - 2023 The modernization process of the use of common forests into robust institutions: a quantitative approach
- 2018 - 2023 Reconsideration of "Douzoku(cognate groups) Theory" by Aruga Kizaemon: from the Standpoint of Historical Sociology and Commons Theory
- 2017 - 2020 Large-scale comparative study about the inttitutional change of Commons accompanied with the social change
- 2012 - 2014 Changes in the vistas and environment of the Shirakami Sanchi World Heritage Site due to damage from earthquakes and exploitation of resources
- 2010 - 2014 Study of the Social History of Management and Use of Local Resources in the Tohoku Region : Mainly through "National Forest Historical Materials"
- 2009 - 2011 Changes in the World Heritage Site of Shirakami-Sanchi : From the Perspective of Development and Usage of Forest and Mineral Resources
- 2002 - 2005 Basic research on historical development of Tohoku intermediate and mountainous area : Mainly the grasp of the owning historical materials of Regional Forestry Offices and District forestry office
- 2002 - 2004 A Study on the Relationships between Social Position and Their Skills in the Shogunate Regime
- 2000 - 2001 A Study on Modernization Process of Forestry Techniques
- 1990 - 1991 The Transformation of Regional Structure in the Rice Single Crop on Paddy Area -the Case Study of Hiraka-mati in Akita Prefecture-
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