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the performance of wave-based and waveless policies through simulation. The best waveless policy yields larger or equal …
Persistent link: https://www.econbiz.de/10009218867
Persistent link: https://www.econbiz.de/10011091727
This paper describes a new technique for modeling flow through a network of queues. The advantages of this method over many discrete event simulations or queueing theory techniques include simplicity, low cost and portability. The paper describes the kinds of processes to which the technique can...
Persistent link: https://www.econbiz.de/10009191900
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...
Persistent link: https://www.econbiz.de/10005824263
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...
Persistent link: https://www.econbiz.de/10005824271
To mitigate the threat that terrorists smuggle weapons of mass destruction into the United States through maritime containers, the U.S. Bureau of Customs and Border Protection (CBP) inspects containers upon entry to domestic ports. Inspection-driven congestion is costly, and CBP provides...
Persistent link: https://www.econbiz.de/10009203997
Generation Simulation vehicular trajectories) fits with the empirical breakdown probability curve that is estimated by …
Persistent link: https://www.econbiz.de/10011154864
Empirical studies showed that many types of network traffic exhibit long-range dependence (LRD),i.e., burstiness on a wide variety of time-scales. Given that traffic streams are indeed endowed withLRD properties, a next question is: what is their impact on network performance? To assess...
Persistent link: https://www.econbiz.de/10011257410
simulation is too time-consuming, and we have to use fastsimulation techniques instead. Due to the exponential decay (in n …,the change of measure is not constant during the simulation run, which is essentially differentfrom many other studies (usually … indeedimproves considerably over naive simulation. We present some accelerations. Finally, we give shortcomments on the influence of …
Persistent link: https://www.econbiz.de/10011257416
A reduced system is a smaller system derived in the process of analyzing a larger system. In solving for steady state probabilities of a Markov chain, generally the solution can be found by first solving a reduced system of equations which is obtained by appropriately partitioning the transition...
Persistent link: https://www.econbiz.de/10009214657