1. M.S. Student, Dept. of Architecture and Architectural Engineering, Seoul National Univ., Seoul, South Korea.
2. Associate Professor, Dept. of Architecture and Architectural Engineering, Seoul National Univ., Seoul, South Korea.
3. Postdoctoral Researcher, Dept. of Civil and Environmental Engineering, Univ. of Michigan, MI.
4. Assistant Professor, Dept. of Civil and Environmental Engineering and Engineering Mechanics, Univ. of Dayton, OH.