1. Assistant Professor, Dept. of Industrial Technology, Univ. of Nebraska Kearney, NE.
2. Ph.D. Candidate, Dept. of Civil, Construction, and Environmental Engineering, Univ. of Alabama, Tuscaloosa, AL.
3. Assistant Professor, Dept. of Civil Engineering, Univ. of Jordan, Amman, Jordan.
4. Lecturer, Dept. of Quantity Surveying, Bells Univ. of Technology, Ota, Ogun State, Nigeria.
5. Lecturer, Dept. of Building, Covenant Univ., Ota, Ogun State, Nigeria.