1. Assistant Professor, Civil and Environmental Engineering Dept., Univ. of Central Florida, Orlando, FL 32816.
2. R&D Manager, Rail Products Engineering, L.B. Foster Company, Pittsburgh, PA 15220.
3. Assistant Professor, Civil Engineering Dept., Middle East Technical Univ., Ankara, Turkey.
4. Assistant Professor, Civil Engineering Dept., Univ. of Arkansas, Fayetteville, AR 72701.
5. John Roebling Professor, Director of Drexel Infrastructure Institute (DI3), Drexel Univ., Philadelphia, PA 19104.