1. Assistant Professor, Dept. of Civil Engineering, Indian Institute of Technology, Guwahati, Assam, India.
2. Assistant Professor, Civil Engineering Technology, Savannah State Univ., GA.
3. Laboratory Manager, Center for Transportation Infrastructure Systems, Univ. of Texas at El Paso.
4. Research Associate Professor, Dept. of Civil Engineering, Univ. of Texas at El Paso.
5. Professor, Dept. of Civil Engineering, Univ. of Texas at El Paso.