This paper analyses the efficiency and distributional impacts of congestion pricing, in the bottleneck model, with continuous heterogeneity in the value of time and schedule delay. The welfare gain of a time-variant toll decreases with the heterogeneity in the value of time, because the marginal external costs from congestion decrease. This welfare gain increases with heterogeneity in the value...

Energy conservation can be the most important concern in the deployment of wireless sensor networks. Among all methods, finding an efficient sleep/transmission schedule must be most effective to achieve energy conservation. There are many researches and solutions for sleep schedule, transmission schedule, or topology/routing creation in the past. Nevertheless, almost none of them can solve all ...

It has been argued that the use of constraint-based techniques and tools enables the implementation of precise, flexible, efficient and extensible scheduling systems: precise and flexible as the system can take into account any constraint expressible in the constraint language; efficient inasmuch as highly optimized constraint propagation procedures are now available; extensible as the consider...

Scheduling trains on a single railway line is treated by converting the scheduling problem to a discrete event dynamic system, and converting a greedy time-efficient strategy to an energy efficient schedule. While such a schedule cannot be referred to as a strategy dependent solely on the state of the system the strategy is easily re-computed when perturbations in the nominal schedule occur. Co...

this paper considers the problem of scheduling hybrid flowshops with machine availability constraints (mac) to minimize makespan. the paper deals with a specific case of mac caused by preventive maintenance (pm) operations. contrary to previous papers considering fixed or/and conservative policies, we explore a case in which pm activities might be postponed or expedited while necessary. regardi...

selection of an appropriate set of information system (is) projects is a critical business activity which is very helpful to all organizations. in this paper, after describing real is project selection problem of iran ministry of commerce (moc), we introduce two data envelopment analysis (dea) models. then, we show applicability of introduced models for identifying most efficient is project fro...

In studying congestion tolling, it is important to account for heterogeneity in preferences of drivers, as ignoring it can bias the welfare gains. We analyse the effects of tolling, in the bottleneck model, with continuous heterogeneity in the value of time and schedule delay. The welfare gain of a time-variant toll increases with heterogeneity in the value of schedule delay. With heterogeneity...