1. Graduate Research Assistant, Dept. of Civil Engineering, Univ. of Maryland, 4298 Campus Dr., College Park, MD 20742.
2. Assistant Professor, Dept. of Civil Engineering, Univ. of Maryland, 4298 Campus Dr., College Park, MD 20742 (corresponding author).
3. Research Structural Engineer, Materials and Structural Systems Division, Engineering Laboratory, National Institute of Standards and Technology, 100 Bureau Dr., Gaithersburg, MD 20899.
4. Professor and Director, Center for Technology and Systems Management, Dept. of Civil Engineering, Univ. of Maryland, 4298 Campus Dr., College Park, MD 20742.