1. Graduate Student Researcher and IGERT Trainee, Dept. of Civil and Environmental Engineering, Univ. of Pittsburgh, Pittsburgh, PA 15261 (corresponding author).
2. Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of Pittsburgh, Pittsburgh, PA 15261.
3. Adjunct Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of Pittsburgh, Pittsburgh, PA 15261.
4. Dept. of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332.
5. Dept. of Civil and Environmental Engineering, Univ. of Pittsburgh, Pittsburgh, PA 15261.