“…Queuing decision problems are often encountered in many practical systems, such as flexible manufacturing systems (FMS) (Vakharia et al, 1999), telecommunication systems (Il Choi et al, 2007), field service support systems (Papadopoulos, 1996), transportation systems (Jiang and Adeli, 2004;Kim, 2009;Karim and Adeli, 2003;Ghosh-Dastidar and Adeli, 2006;Bliemer, 2007;Szeto et al, 2011;Putha et al, 2012;Balsamo et al, 2003), and flow-shop-type production systems (Kumar and Singh, 2007). Queuing decision models play an important role in queuing system designs, and typically involve making one or a combination of decisions, such as deciding on the number of servers at a service facility, the efficiency of the servers, and the number of service facilities required (Chen, 2007).…”