1. Department of Industrial and Manufacturing Engineering, Pennsylvania State University, University Park, PA, USA
2. School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
3. School of Industrial Engineering, University of Ulsan, Ulsan, Korea
4. School of Engineering Design, Technology, and Professional Programs, Pennsylvania State University, University Park, PA, USA
5. LG Electronics, Englewood Cliffs, NJ, USA