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A Markovian queueing model for ambulance offload delays
Almehdawe, Eman; Jewkes, Beth; He, Qi-Ming - In: European Journal of Operational Research 226 (2013) 3, pp. 602-614
Ambulance offload delays are a growing concern for health care providers in many countries. Offload delays occur when ambulance paramedics arriving at a hospital Emergency Department (ED) cannot transfer patient care to staff in the ED immediately. This is typically caused by overcrowding in the...
Persistent link: https://www.econbiz.de/10010608525
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Selfish routing in public services
Knight, Vincent A.; Harper, Paul R. - In: European Journal of Operational Research 230 (2013) 1, pp. 122-132
It is well observed that individual behaviour can have an effect on the efficiency of queueing systems. The impact of this behaviour on the economic efficiency of public services is considered in this paper where we present results concerning the congestion related implications of decisions made...
Persistent link: https://www.econbiz.de/10010871261
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Price and speed decisions in customer-intensive services with two classes of customers
Ni, Guanqun; Xu, Yinfeng; Dong, Yucheng - In: European Journal of Operational Research 228 (2013) 2, pp. 427-436
In many customer-intensive services, the perceived quality of service decreases in the speed of service. Usually, an increase in service speed induces different marginal reductions in quality for heterogeneous customers. To bring insight into the managerial implications of this difference, we...
Persistent link: https://www.econbiz.de/10010662506
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Total completion time minimization on multiple machines subject to machine availability and makespan constraints
Huo, Yumei; Zhao, Hairong - In: European Journal of Operational Research 243 (2015) 2, pp. 547-554
This paper studies preemptive bi-criteria scheduling on m parallel machines with machine unavailable intervals. The …
Persistent link: https://www.econbiz.de/10011209321
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Job-shop production scheduling with reverse flows
Abdeljaouad, Mohamed Amine; Bahroun, Zied; Omrane, Anissa; … - In: European Journal of Operational Research 244 (2015) 1, pp. 117-128
In this paper, we conduct a study of the job-shop scheduling problem with reverse flows. This NP-hard problem is …
Persistent link: https://www.econbiz.de/10011209333
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Scheduling identical parallel machines with fixed delivery dates to minimize total tardiness
Mensendiek, Arne; Gupta, Jatinder N.D.; Herrmann, Jan - In: European Journal of Operational Research 243 (2015) 2, pp. 514-522
parallel machines where jobs can only be delivered at certain fixed delivery dates. Scheduling problems with fixed delivery …
Persistent link: https://www.econbiz.de/10011209377
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A Lagrangian heuristic for an integrated lot-sizing and fixed scheduling problem
Wolosewicz, Cathy; Dauzère-Pérès, Stéphane; … - In: European Journal of Operational Research 244 (2015) 1, pp. 3-12
This paper presents a novel approach for solving an integrated production planning and scheduling problem. In theory as …. Scheduling largely depends on the production quantities (lot sizes) computed at the production planning level and ignoring … scheduling constraints in planning leads to inconsistent decisions. Integrating production planning and scheduling is therefore …
Persistent link: https://www.econbiz.de/10011209402
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The data transfer problem in a system of systems
Bocquillon, Ronan; Jouglet, Antoine; Carlier, Jacques - In: European Journal of Operational Research 244 (2015) 2, pp. 392-403
Systems of systems are collections of independent systems which interact and share information to provide services. To communicate, systems can opportunistically make use of contacts that occur when two entities are close enough to each other. In this paper, it is assumed that reliable...
Persistent link: https://www.econbiz.de/10011209408
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Network construction problems with due dates
Averbakh, Igor; Pereira, Jordi - In: European Journal of Operational Research 244 (2015) 3, pp. 715-729
A network needs to be constructed by a server (construction crew) that has a constant construction speed which is incomparably slower than the server’s travel speed within the already constructed part of the network. A vertex is recovered when it becomes connected to the depot by an already...
Persistent link: https://www.econbiz.de/10011264292
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Scatter search with path relinking for the flexible job shop scheduling problem
González, Miguel A.; Vela, Camino R.; Varela, Ramiro - In: European Journal of Operational Research 245 (2015) 1, pp. 35-45
The flexible job shop scheduling is a challenging problem due to its high complexity and the huge number of …
Persistent link: https://www.econbiz.de/10011264307