1. Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Villanova Univ., Villanova, PA.
2. Assistant Professor, Dept. of Civil and Environmental Engineering, Villanova Univ., Villanova, PA.
3. Associate Professor, Dept. of Civil and Environmental Engineering, Villanova Univ., Villanova, PA.
4. Professor Emerita, Dept. of Civil, Architectural, and Environmental Engineering, Drexel Univ., Philadelphia, PA.