Examiner, 5 and 7 Class Government Official (Automatic Control, Machine Design)
Examiner, Certification for Middle and High School  Teachers(Technology)
Evaluation Committee, Projects of Korea Science and Engineering Foundation
Evaluation Committee, Projects of Korea Research Foundation
Evaluation Committee, Domestic Engineering  Journals, Korea Research  Foundation
Research Evaluation Committee, Projects of Korea Agency for Defense Development
Evaluation Committee, Sewerage System Projects of Korea Agency of Environment
Evaluation Committee, Environment Facilities and Construction,  Incheon City
Evaluation Committee, Projects of the Ministry of Science and Technology
Evaluation Committee, Research Projects, Korea Research  Foundation