1 School of Industrial Engineering and Management, Shenkar College of Engineering and Design, Ramat Gan, 52526, Israel. Electronic address: idomorag@shenkar.ac.il.
2 Katholieke Universiteit Leuven, Centre for Industrial Management / Traffic & Infrastructure / Dept. of Mechanical Engineering, Celestijnenlaan 300A, Hevelee 3001 Leuven. Belgium. Electronic address: liliane.pintelon@kuleuven.be.