1. Thomas Walter Professor, Dept. of Management, Auburn Univ., 415 W. Magnolia, Suite 401, Auburn, AL 36849. E-mail: sankacs@auburn.edu
2. Ph.D. Student, Dept. of Management, Auburn Univ., 415 W. Magnolia, Suite 401, Auburn, AL 36849. E-mail: varmavi@auburn.edu
3. Thomas Walter Professor, Dept. of Mechanical Engineering, Auburn Univ., 201 Ross Hall, Auburn, AL 36849. E-mail: rajupol@auburn.edu