1. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Massachusetts, Amherst, MA 01003.
2. Stetson Engineers, 2171 E. Francisco Blvd., Ste. K, San Rafael, CA 94901; formerly, M.S. Student, Dept. of Civil and Environmental Engineering, Univ. of Massachusetts, Amherst, MA 01003.
3. PhD Student, Dept. of Civil and Environmental Engineering, Univ. of Massachusetts, Amherst, MA 01003.