1. Post-Doctoral Researcher, Dept. of Civil and Environmental Engineering, Univ. of California at Los Angeles, Los Angeles, CA 90095-1593.
2. Assistant Professor, Beijing Normal Univ., Beijing, China; formerly, Post-Doctoral Researcher, Dept. of Civil and Environmental Engineering, Univ. of California at Los Angeles, Los Angeles, CA 90095-1593.
3. Research Engineer, Dept. of Civil and Environmental Engineering, Univ. of California at Los Angeles, Los Angeles, CA 90095-1593.
4. Associate Director, Center of Environmental and Water Resource Engineering, Dept. of Civil and Environmental Engineering, Univ. of California at Davis, Davis, CA 95616.
5. Professor, Dept. of Civil and Environmental Engineering, Univ. of California at Los Angeles, Los Angeles, CA 90095-1593.