- 2023 - 2028 Database construction on Japanese folktales and its application to dialectology
- 2020 - 2025 『全国方言文法辞典』データベースの拡充による日本語時空間変異対照研究の多角的展開
- 2020 - 2023 言語レパートリーの構造と形成に関する研究
- 2014 - 2019 Construction of the Methodology and Building a Dictionary of Japanese Dialect Grammar for the Contrastive Study of Language Variation and Change
- 2013 - 2016 Exploratory study in aspects of learning by Japanese language learners engaged in tandem learning
- 2012 - 2015 Inquiry into the Structure and Functions of the Tobihane Intonation
- 2009 - 2014 Construction of "Comprehensive dictionary of Japanese dialects grammar" and its online edition
- 2011 - 2013 Research of the information action by net and cellular phone by contrast with Japan and China
- 2010 - 2012 Ecolinguistic study of the development of Nikkei varieties of Japanese
- 2009 - 2011 A Study for a framework of description of the meanings of sentence final particles in Japanese dialects
- 2011 - 日本語諸方言における否定疑問形式の終助詞化に関する記述的研究
- 2010 - 日本語諸方言における否定疑問形式の終助詞化に関する記述的研究
- 2007 - 2009 Contrastive Research of for Grammar Dictionary in Japanese Dialects
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