Hong-Seob Oh (Professor of Civil Engineering, Gyeongsang National University, since 2005). I received my bachelor's degree, master's degree, and doctorate degree from Hanyang University in the Republic of Korea. I worked as a PhD researcher at Columbia University in the United States. Vice president and director: the Korea Concrete Institute, the Korea Institute for Structural Maintenance and Inspection and the Korea Recycled Construction Resources Institute. Technical committee member: Korea Expressway Corporation, Korea Land and Housing Corporation, Korea National Railway and local governments.