We derive optimal rules for paying hospitals in a public health care system in which providers can choose quality and random patient demand is rationed by waiting time. Since waiting time imposes real costs on patients hospital payment rules should take account of their effect on waiting time as...

Companies are increasingly being held accountable for the life-cycle impact of their products and services. Transportation is frequently a major component of this life-cycle impact. Hence, to reduce total environmental impact, logistics managers will have to become more sophisticated in their...

The assessment of uninterrupted traffic flow is traditionally based on empirical methods. We develop some analytic queueing models based on traffic counts and we model the behavior of traffic flows as a function of some of the most relevant determinants. These analytic models allow for...