1. Assistant Professor, Dept. of Architectural Engineering, Sungkyunkwan Univ., Suwon, Republic of Korea, 440-746.
2. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of California at Berkeley, Berkeley, CA 94720-1710.
3. Professor, Dept. of Civil, Structural, and Environmental Engineering, Univ. at Buffalo, 230 Ketter Hall, Buffalo, NY 14260.