Sanshiro Kume (久米 三四郎, Kume Sanshirō; March 22, 1926 – August 31, 2009) was a radiochemist who lectured at Osaka…Sanshiro Kume (久米 三四郎, Kume Sanshirō; March 22, 1926 – August 31, 2009) was a radiochemist who lectured at Osaka University. He has been described as an "outspoken anti-nuclear power plant scientist". Kume served as an adviser to residents who filed a lawsuit to try to stop the Monju Experimental Breeder Reactor from being built. He also led a panel of experts who examined official reports on the 1995 sodium coolant leak at the Monju reactor. Kume also assisted residents who "lodged Japan’s first lawsuit seeking annulment of a permit to build a nuclear power reactor in Ikata, Ehime Prefecture in 1973".
Takeo Matsubara (松原武生, Takeo Matsubara; April 3, 1921 - December 15, 2014) was a Japanese physicist. Matsubara proposed…Takeo Matsubara (松原武生, Takeo Matsubara; April 3, 1921 - December 15, 2014) was a Japanese physicist. Matsubara proposed a method of statistical mechanics related to Green's function (many-body theory), by applying quantum field theory techniques to statistical physics. This method, commonly known as Matsubara Green's function technique, introduces the notion of imaginary time, and the reciprocal variable to this imaginary time is known as discrete Matsubara frequency. Matsubara graduated from Osaka Imperial University, and worked as full professor in Hokkaido University, Kyoto University, and Okayama University of Science. He was the winner of the Nishina Memorial Prize in 1961, and took the directorship of the Physical Society of Japan. His work with Yukata Toyozawa on impurity bands in semiconductors has led to the Matsubara-Toyozawa model that describes the motion of an electron in a random lattice. His research interests were dielectric materials, superconductivity and superfluidity. He wrote various physics textbooks in Japanese.
Toru Kumon (公文 公, Kumon Tōru; March 26, 1914 – July 25, 1995) was a Japanese mathematics educator. He was born in Kōchi…Toru Kumon (公文 公, Kumon Tōru; March 26, 1914 – July 25, 1995) was a Japanese mathematics educator. He was born in Kōchi Prefecture, Japan. He graduated from the College of Science at Osaka University with a degree in mathematics and taught high school mathematics in his home town of Osaka. In 1954, his son, Takeshi, performed poorly in a Year 2 mathematics test. Prompted by his wife, Teiko, Toru closely examined Takeshi's textbooks and believed they lacked the proper opportunity for a child to practice and master a topic. He wrote worksheets each day for his son. By the time Takeshi was in Year 6, he was able to solve differential and integral calculus. This was the beginning of the Kumon Method of Learning. Other parents became interested in Kumon's ideas, and in 1955, the first Kumon Center was opened in Osaka. In 1958, Toru Kumon founded the Kumon Institute of Education. Toru Kumon died in Osaka on July 25, 1995, at the age of 81 from pneumonia. There is a Toru Kumon museum in Osaka. Asteroid 3569 Kumon is named after him.
Kaoru Ōta (Japanese: 太田 薫; 1 January 1912 – 14 September 1998) was a Japanese trade union leader. He served as chairman…Kaoru Ōta (Japanese: 太田 薫; 1 January 1912 – 14 September 1998) was a Japanese trade union leader. He served as chairman of the General Council of Trade Unions of Japan (Sōhyō) from 1958 to 1966. Known for his cheerful demeanor and energetic activism, Ōta's many forceful statements in defense of the Japanese workers were affectionately known as the "Ōta Trumpet" (Ōta rappa).