1. Professor, Dept. of Structural Engineering, Univ. of California at San Diego, La Jolla, CA 92093.
2. Assistant Project Scientist, Dept. of Structural Engineering, Univ. of California at San Diego, La Jolla, CA 92093.
3. Applied Insurance Research Worldwide Corporation, 131 Dartmouth St., Boston, MA 02116.
4. Professor, Dept. of Civil and Environmental Engineering, Univ. of California at Davis, Davis, CA 95616.
5. Research Engineer, Dept. of Civil and Environmental Engineering, Univ. of California at Davis, Davis, CA 95616.