1. Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA.
2. Assistant Professor, Dept. of Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA.
3. Professor, Dept. of Civil Engineering, Northeastern Univ., Boston, MA.
4. Associate Research Scientist, Dept. of Civil Engineering, Northeastern Univ., Boston, MA.