Department of Mechanical Engineering;
Chosun University;
Graduate School;
Gwangju;
Korea;
Small Business Corporation;
Gwangju;
Korea;
Department of Computer Mechanic;
Chosun College of Science & Technology;
Gwangju;
Korea;
Department of Fire Safety Management;
Seokang Collegy;
Gwangju;
Korea;
Department of Mechanical Engineering;
Chosun University;
Gwangju;
Korea;