1. Quarles Professor, Depts. of Systems and Information Engineering and Civil Engineering, and Founding Director, Center for Risk Management of Engineering Systems, Box 400736, Univ. of Virginia, Charlottesville, VA 22904 (corresponding author).
2. Professor, Department of Systems and Information Engineering, Univ. of Virginia.
3. Research Associate Professor, Dept. of Systems and Information Engineering, and Associate Director, Center for Risk Management of Engineering Systems, Univ. of Virginia.
4. Research Scientist, Dept. of Systems and Information Engineering, Univ. of Virginia.
5. Graduate Research Assistant, Dept. of Systems and Information Engineering, Univ. of Virginia.