About NAKAMURA Tsuyoshi
About Dep. of Economics, Tokyo Keizai Univ., JPN
About OHASHI Hiroshi
About Dep. of Economics, Univ. of Tokyo, 7-3-1 Hongo, Tokyo, JPN
About Research Policy
About steel industry
About Japan
About technological introduction
About productivity enhancement
About productivity
About oxygen blown converter
About Technology
About technology management
About technical progress
About probit model
About total factor productivity
About statistical model
About model
About statistical model
About BOF (furnace)
About Diffusion of Innovation
About Steelmaking
About Statistics
About プラント
About 普及
About 製鋼
About 精練
About 研究
About 役割