1. Professor, Dept. of Civil and Environmental Engineering, Univ. of Alabama in Huntsville, Huntsville, AL 35899.
2. Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Univ. of Alabama in Huntsville, Huntsville, AL 35899.
3. Postgraduate Student, Dept. of Civil and Environmental Engineering, Univ. of Alabama in Huntsville, Huntsville, AL 35899.
4. Professor, Dept. of Civil and Environmental Engineering, Rutgers State Univ. of New Jersey, Piscataway, NJ 08854.