1. Associate Professor, Kongju National Univ., Cheonan, Chungnam, KR.
2. Assistant Professor, Incheon National Univ., Incheon, KR
3. Research Fellow, Korea Institute of Construction Technology, Goyang, KR.
4. Graduate Student, Korea Advanced Institute of Science and Technology, Daejeon, KR.
5. Professor, Korea Advanced Institute of Science and Technology, Daejeon, KR.