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A Quarterly Journal of Operations Research

4OR OnlineFirst articles

10.01.2019 | Research Paper

Finite horizon risk-sensitive continuous-time Markov decision processes with unbounded transition and cost rates

We consider a risk-sensitive continuous-time Markov decision process over a finite time duration. Under the conditions that can be satisfied by unbounded transition and cost rates, we show the existence of an optimal policy, and the existence and …

07.01.2019 | PhD Thesis

A comparative study of labeling algorithms within the branch-and-price framework for vehicle routing with time windows

01.01.2019 | Research Paper

A GRASP algorithm for multi container loading problems with practical constraints

We consider the multicontainer loading problem of a company that has to serve its customers by first putting the products on pallets and then loading pallets onto trucks. When a large number of units of a product have to be shipped, the company …

29.11.2018 | PhD Thesis

The trade-off between inventories, lead time and capacity: application to vaccine supply chain design

27.11.2018 | Research Paper

An exact algorithm for the minimum quartet tree cost problem

The minimum quartet tree cost (MQTC) problem is a graph combinatorial optimization problem where, given a set of $$n \ge 4$$ n ≥ 4 data objects and their pairwise costs (or distances), one wants to construct an optimal tree from the $$3 \cdot {n …

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Über diese Zeitschrift

4OR is jointly published by the Belgian, French, and Italian Operations Research Societies. Published quarterly, the journal features high quality papers on the theory and application of operations research. Rapid dissemination of important results is a hallmark of the journal.

In addition to publishing original research findings, the journal publishes state-of-the-art surveys written by prominent researchers. The journal’s industry section features case studies as well as papers on operations research techniques in industry and on open industrial problems.

Educational papers help improve the quality of operations research teaching. The PhD section publishes selected abstracts of recent PhD theses defended in Belgian, French or Italian institutions, or of PhD theses defended by Belgian, French or Italian citizens.

Officially cited as: 4OR-Q J Oper Res

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