1. Postdoctoral Research Associate, School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332.
2. Postdoctoral Research Fellow, Dept. of Civil and Environmental Engineering, Univ. of Michigan, Ann Arbor, MI 48109.
3. Professor, Dept. of Architecture and Architectural Engineering, Seoul National Univ., Seoul 08826, Republic of Korea.
4. Associate Professor, School of Architecture and Architectural Engineering, Hanyang Univ., Ansan 15588, Republic of Korea (corresponding author).