In an emergency department (ED), the demand for service is not constant over time. This cannot be accounted for by means of waiting lists or appointment systems, so capacity decisions are the most important tool to influence patient waiting times. Additional complexities result from the...

Farmers make investments before knowing how much water they will receive later in the season. The costs of the inefficiently high or low investment that may result can be significant. A spot market that efficiently allocates water once quantity is realized is unlikely to coordinate simultaneous...

We consider the robust design and control of call center systems with flexible interactive voice response (IVR) systems. In a typical call center equipped with an IVR system, customers are handled first by the IVR system, which is a computerized system that often enables customers to self-serve....

In this paper, we developed and analyzed a dynamic model of the vehicle routing problem. In the stated model, a vehicle with adequate volume travels at a constant velocity in a bounded plane to provide services to independent and uniformly distributed demands. The dynamic demands arrive...

Goods for which demand greatly exceeds supply are frequently allocated to citizens using queuing mechanisms. However, violence can occur either when queues are very long or when large numbers of citizens are not provided goods being allocated with queuing mechanisms. Hence, we use the theory of...