1. Division Head, National Center for Research on Earthquake Engineering, Taipei, Taiwan. E-mail: jsh@mail.ntust.edu.tw; formerly, Professor, Dept. of Construction Engineering, P.O. Box 90-130, National Taiwan Univ. of Science and Technology, Taipei, Taiwan.
2. Graduate Research Assistant, Department of Civil, Structural & Environmental Engineering, State University of New York, Buffalo, New York; formerly, Assistant Research Engineer, National Center for Research on Earthquake Engineering, Taipei, Taiwan.
3. Graduate Research Assistant, Dept. of Construction Engineering, National Taiwan Univ. of Science and Technology, Taipei, Taiwan.