1. Department of Industrial and Systems Engineering, Northern Illinois University, DeKalb, IL
2. Department of Physical Therapy, Catholic University of Pusan, Busan, Republic of Korea
3. Department of Industrial and Management Engineering, Gangneung-Wonju National University, Wonju, Gangwon-do, Republic of Korea
4. Division of Energy Resources Engineering and Industrial Engineering, Kangwon National University, Chuncheon, Gangwon-do, Republic of Korea