1. Assistant Professor, Dept. of Civil Engineering, Univ. of Alabama in Huntsville, Huntsville, AL 35899.
2. Assistant Professor, Dept. of Industrial and Systems Engineering and Engineering Management, Univ. of Alabama in Huntsville, Huntsville, AL 35899.
3. Graduate Student in Civil Engineering, Univ. of Alabama in Huntsville, Huntsville, AL 35899.