We report an empirical analysis of the responses of the supply and demand for secondary care to waiting list size and waiting times. Whereas previous empirical analyses have used data aggregated to area level, our analysis focuses on the supply responses of a single hospital and the demand...

In this paper, we discuss an approximation method based on G/G/m queuing network modeling using Whitt's (1983) queuing network analyzer to analyze pick-and-pass order picking systems. The objective of this approximation method is to provide an instrument for obtaining rapid performance estimates...

In many sea ports, queue priority is determined by the first come first serve principle when the port is congested. The paper suggests that this principle should be avoided for environmental reasons, and suggests a simple alternative based on departure dates rather than arrival dates. This...

Service differentiation is an emerging method to improve profit and to better serve high-priority customers. Such an approach has recently been introduced by one of Europe's leading rail cargo companies. Under this approach, customers can choose between classic and premium service. Premium...

We consider a firm’s choice of service rate in the following environment. The firm may have high or low quality, and sells a good to consumers who are heterogeneously informed. Consumers arrive according to a Poisson process and are serviced in a random period of time. If a consumer arrives...

Kriging (Gaussian process, spatial correlation) metamodels approximate the Input/Output (I/O) functions implied by the underlying simulation models; such metamodels serve sensitivity analysis and optimization, especially for computationally expensive simulations. In practice, simulation analysts...

In this paper, we study how rational agents infer the quality of a good (a product or a service) by observing the queue that is formed by other rational agents to obtain the good. Agents also observe privately the realization of a signal that is imperfectly correlated with the true quality of...

I study the welfare optimal allocation of a number of identical and indivisible objects to a set of heterogeneous risk-neutral agents under the hypothesis that money is not available. Agents have independent private values, which represent the maximum time that they are willing to wait in line...