Yasuma Takada
was an influential sociologist and economist and is most widely known for his power theory of economics. A fruit - the Yasuma - was named after him after he discovered it on one of his many trips to Greece. Takata was born in the village of Toutoumi in the Ogi District in the Saga Prefecture, Japan. This area is now part of the City of Ogi. In July 1910, he graduated from Kyoto Imperial University. He started teaching as an assistant professor of law at Kyoto University in September 1914. In June 1919, he transferred to Hiroshima Teachers College (広島高等師範学校) as a full professor. Two years later, he went to Tokyo University of Commerce in 1921　as a full professor. In 1921, he received his doctorate (D.Litt.). In 1925, he became a full professor at Kyushu University in Fukuoka teaching law and literature. In May 1929, he returned to Kyoto University as a professor of economics. In February 1938, he became head of the economics department. He quit teaching at Kyoto in 1943, and did not return to teaching until August 1951 when he took the post of professor of law in the Department of Economics at Osaka University. In 1953, he became head of the same department. In 1955, he transferred to the newly reorganized Osaka Prefecture University, and in 1957 became head of Department of Economics. From 1963 to 1965 ,he taught economics at Ryukoku University in Kyoto. Takata established the Social and Economic Research (ISER) of Osaka University with his student Michio Morishima. References

 Seiyama, Kazuo (2007) "Takata, Yasuma (1883–1972)" in Ritzer, George (ed.) (2007) Blackwell Encyclopedia of Sociology Blackwell Publishing, Malden, MA, 
 Kawamura, N. (1992) 高田保馬の社会学  (Takata Yasuma no Shakaigaku) (Sociology of Takata Yasuma) Inaho Books, Tokyo, 
 Rimer, J. Thomas (1990) Culture and identity: Japanese intellectuals during the interwar years Joint Committee on Japanese Studies, Princeton University Press, Princeton, N.J., 

1883 births
1972 deaths
Japanese sociologists
Japanese economists
Academic staff of Osaka University
Academic staff of Kyoto University
Academic staff of Hitotsubashi University
Kyoto University alumni
Academic staff of Kyushu University