1. Graduate Research Assistant, Dept. of Electrical and Computer Engineering, Applied Microwave Nondestructive Testing Laboratory, Univ. of Missouri-Rolla, Rolla, MO 65409.
2. Schlumberger Distinguished Professor of Electrical and Computer Engineering, Dept. of Electrical and Computer Engineering, Applied Microwave Nondestructive Testing Laboratory, Univ. of Missouri-Rolla, Rolla, MO 65409.
3. Assistant Professor, Dept. of Civil, Architectural and Environmental Engineering, Center for Infrastructure Engineering Studies (CIES), Univ. of Missouri-Rolla, Rolla, MO 65409.
4. Jones Professor of Civil Engineering, Dept. of Civil, Architectural and Environmental Engineering, Center for Infrastructure Engineering Studies (CIES), Univ. of Missouri-Rolla, Rolla, MO 65409.