1. Department of Industrial Engineering, Sakarya University, Sakarya 54050, Turkey;
2. Emory and Henry College, Office of the Institutional Research and Institutional Effectiveness, Emory, VA 24327
3. Education Technology Services, Penn State University, University Park, PA 16802
4. School of Engineering Design, Technology and Professional Programs, Penn State University, University Park, PA 16802
5. Department of Industrial and Manufacturing Systems Engineering, Iowa State University, Ames, IA 500112030