- 2014 - 2017 A Study on the Present State and Change of Prosody in the Old Domain of Satsuma: Miyakonojo and the Surrounding Area.
- 2010 - 2012 The research of constructions for archiving Southern Kyushu dialect with Multimedia
- 2006 - 2008 The research of constructions for archiving Tokyo dialect with Multimedia.
- 2003 - 2005 A Study of Networking and Development of `Acoustic Linguistic Atlas' and 'Visual Linguistic Atlas'
- 2003 - 2005 THE INTEGRATED RESEARCH ON MAKING OF TOKYO DIALECT RECORDING MATERIAL OF THE 19.20TH CENTURY AND ARCHIVE
- 2001 - 2002 A Study of "Speaking Linguist Atlas of Southern Kyushu"
- 1998 - 1999 A research for the confirmation and a present actual condition and consciousness of the conventional dialect in Miyazaki Pref.
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