1. Associate Professor, Dept. of Civil and Construction Engineering, Western Michigan Univ., Kalamazoo, MI 49008-5316.
2. REU Research Assistant, Dept. of Civil and Construction Engineering, Western Michigan Univ., Kalamazoo, MI 49008-5316.
3. Professor, Dept. of Civil and Environmental Engineering, North Caroline State Univ., Raleigh, NC 27695-7908.
4. Professor, Dept. of Civil Engineering, Kansas State Univ., Manhattan, KS 66506.