After graduating with a bachelor's degree from Chungang university in Seoul Korea, I received Ph.D. in construction management. Subsequently, I completed a postdoctoral fellowship at the construction management laboratory within the department of civil engineering at Stanford university. Through joint research cooperation programs with the Korean government and various European government agencies, I also briefly served as an exchange professor and visiting professor at the construction informatization laboratory at the university of Salford in the UK, the VTT construction informatization laboratory in Finland, and the technical university of Munich in Germany. My main research fields are BIM and construction management, and I served as the president of the Korea institute of construction engineering & management and the Korea association of procurement & supply management. Currently, he serves as a professor emeritus in the department of civil engineering at Gyeongsang national university in Korea and as a senior research professor affiliated with the engineering research institute in the university.