1. Graduate Research Assistant and Ph.D. Student, Dept. of Civil and Environmental Engineering, Univ. of Alabama in Huntsville, Huntsville, AL.
2. Postdoctoral Research Associate, Connecticut Transportation Institute, Univ. of Connecticut, Storrs, CT.
3. Assistant Professor, School of Engineering and Applied Sciences, Western Kentucky Univ., Bowling Green, KY.
4. Professor and Chair, Dept. of Civil and Environmental Engineering, Univ. of Alabama in Huntsville, Huntsville, AL.