1. Research Assistant Instructor, Civil, Environmental, and Infrastructure Engineering, Information Technology and Engineering School, George Mason Univ., Fairfax, VA 22030.
2. Professor, Civil, Environmental, and Infrastructure Engineering, Information Technology and Engineering School, George Mason Univ., Fairfax, VA 22030.
3. Professor, Computer Science Dept., Information Technology and Engineering School, George Mason Univ., Fairfax, VA 22030.