- 2023 - 2028 戦間期、越境する活動家に対するサーベイランスの実態とその限界
- 2022 - 2026 The theory and practice of 'trans-imperial history': towards an open-ended framework of research
- 2021 - 2024 人の移動と感染症をめぐる歴史的研究:巡礼旅券による移動の制度化と身体の管理
- 2020 - 2023 Comparative Study on Surveillance and Prevention in Colonial States
- 2018 - 2021 Institutionalizing passport system in the colony: Comparative studies on the Dutch East Indies, British Malaya, and Taiwan.
- 2017 - 2020 Comparative Study on Colonial State Building
- 2016 - 2020 Colonialism and anti-colonialism as seen from the perspective of trans-imperial relationality: the historical structures of comparison, collaboration, co-existence, and movement
- 2016 - 2018 植民地における移動の自由及び旅券・査証制度の構築に関する研究
- 2015 - 2018 Colonial Governance Compared: Marriage Regulation in the Dutch East Indies and the British Malaya
- 2011 - 2013 The Japanese Law in British Malaya and the Dutch East Indies: A Comparative Study
- 2010 - 2012 Study about the Family Laws and Customs of Colonies.
- 2007 - 2010 Studies on "Colonial Responsibilities"in the History of Decolonization
- 2007 - 2009 On legal status of the Japanese-Formosan in the Dutch East Indies
- 2007 - 2009 Study about Registered/unregistered Marriages between Colonizers and the Colonized
- 2005 - 2006 文明と野蛮の間:『日本人法』の成立と蘭領東インドにおける住民区分の変容
- 2002 - 2004 Colony and Metropolis within Empire-Historical Anthropological Studies of Sovereignty Systems between Boundaries
- 2001 - 2002 オランダ植民地統治の研究
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