Chiiki keizai tougou kenkyuu : boueki soushutsu boueki tenkan keisei yuuin o bunseki shikaku to shite

Chiiki no shizen kankyou to keizai katsudou no sougo kanrensei ni kansuru kenkyuu : hyouka no shiten to jisshou bunseki o chuushin to shite

Douji tenkan jiko kaiki moderu o mochiita keizai jikeiretsu ni okeru hitaishousei no kenkyuu

Shougai jukensei ni taisuru shiken jikan enchouritsu no suitei ni kansuru jikkenteki kenkyuu : tesuto no kaitou katei no bunseki ni yoru teiryouteki suiteihou no kaihatsu ( shikaku shougai jukensei o moderu to shite )