2012 学術雑誌 共著 Effects of Re-invention on Industry Growth and Productivity: Evidence from Steel Refining Technology in Japan, 1957-68 Economics of Innovation and New Technology
2012 学術雑誌 共著 Intra-plant Diffusion of New Technology: Role of Productivity in the Study of Steel Refining Furnaces Research Policy
2017/09/01 口頭発表 Import Pressure and Merger Evaluation: A Case of Japanese Copper Tube Industry EARIE2017
2012/11/17 口頭発表 Jungsoo Park (Sogang University) and Yung Chul Park (Korea University) "Has financial liberalization improved economic efficiency in Korea?: Evidence from firm-level and industry-level data" に対する討論者 2012年度日本応用経済学会秋季大会
2011/03/03 口頭発表 “Intra-plant Diffusion of New Technology: Role of Productivity in the Study of Steel Refining Furnaces” Japan Lunch Seminar (University of California, San Diego)
2009/06/13 口頭発表 Priyanga DUNUSINGHE and Hitoshi OSAKA (Kyushu University) "Increasing Income Inequality: Evidence from the Wage Divergence in the Selected Asian Countries"に対する討論者 2009年日本応用経済学会春季大会