1. Professor, Dept. of Civil and Environmental Engineering, Univ. of California, Irvine, CA 92697.
2. Associate Professor, Dept. of Civil Engineering, The City College of the City Univ. of New York, New York, NY.
3. Professor, Faculty of Engineering, Univ. of Technology, Sydney, Australia.
4. Associate Professor, Dept. of Civil Engineering, Tamkang Univ., Taipei, Taiwan.