   4OR comes of age: Editorial noteCrama, Yves  ; ; in 4OR: A Quarterly Journal of Operations Research (2021), 19 This is the traditional triennial note used by the Editors to give the readers of 4OR information on the state of the journal and its future. In the three years that have passed since the last editorial ... [more ▼] This is the traditional triennial note used by the Editors to give the readers of 4OR information on the state of the journal and its future. In the three years that have passed since the last editorial note, three volumes (each containing four issues) of the journal have been published: vol. 16 (2018), vol. 17 (2019), and vol. 18 (2020). [less ▲] Detailed reference viewed: 27 (2 ULiège) A comparative study of labeling algorithms within the branch-and-price framework for vehicle routing with time windowsMichelini, Stefano in 4OR: A Quarterly Journal of Operations Research (2019), 17 Ph. D Thesis summary, see other reference on ORBI Detailed reference viewed: 62 (12 ULiège)Editorial: Sweet sixteenCrama, Yves ; ; in 4OR: A Quarterly Journal of Operations Research (2018) This is the traditional triennial note used by the editors to give the readers of 4OR information on the state of the journal and its future. In the 3years that have passed since the last editorial note ... [more ▼] This is the traditional triennial note used by the editors to give the readers of 4OR information on the state of the journal and its future. In the 3years that have passed since the last editorial note (Liberti et al. in Q J Oper 13:1–13, 2015), three volumes (each containing four issues) of the journal have been published: vol. 13 (2015), vol. 14 (2016), and vol. 15 (2017). [less ▲] Detailed reference viewed: 37 (4 ULiège)Design and Management of Freight Transport Networks: Intermodal Transport and ExternalitiesMostert, Martine in 4OR: A Quarterly Journal of Operations Research (2017) Ph.D. thesis summary. Please refer to http://orbi.ulg.ac.be/handle/2268/211640 for the complete thesis. Detailed reference viewed: 60 (11 ULiège)The three-dimensional rectangular Multiple Bin Size Bin Packing Problem with transportation constraints: A case study in the field of air transportationPaquay, Célia in 4OR: A Quarterly Journal of Operations Research (2017) Ph. D Thesis summary see other reference on ORBI Detailed reference viewed: 66 (10 ULiège)Editorial: A brand new cheating attempt: a case of usurped identityCrama, Yves ; ; in 4OR: A Quarterly Journal of Operations Research (2016), 14 We recall some cases of ethical misconduct that occurred in the recent years, and we report a new trick that was recently attempted to cheat the journal in order to obtain the publication of an article ... [more ▼] We recall some cases of ethical misconduct that occurred in the recent years, and we report a new trick that was recently attempted to cheat the journal in order to obtain the publication of an article through usurped identity. [less ▲] Detailed reference viewed: 49 (3 ULiège)Modeling in Air Transportation: Cargo Loading and Itinerary ChoiceLurkin, Virginie in 4OR: A Quarterly Journal of Operations Research (2016) This is a summary of the author's PhD thesis supervised by Michael Schyns and defended on April 29, 2016 at the University of Li\`ege, Belgium. We examine two problems as part of this dissertation. The ... [more ▼] This is a summary of the author's PhD thesis supervised by Michael Schyns and defended on April 29, 2016 at the University of Li\`ege, Belgium. We examine two problems as part of this dissertation. The first is a cargo loading problem. The second problem we examine involves the estimation of itinerary choice models that include price variables and correct for price endogeneity using a control function that uses several types of instrumental variables. [less ▲] Detailed reference viewed: 79 (7 ULiège)Multi-period stochastic optimization problems in transportation management (Ph. D. Thesis Summary)Pironet, Thierry in 4OR: A Quarterly Journal of Operations Research (2015), 13(1), 113-114 Ph. D Thesis summary see other reference on ORBI Detailed reference viewed: 77 (13 ULiège)Peter Ladislaw Hammer (1936-2006); Crama, Yves ; in 4OR: A Quarterly Journal of Operations Research (2007), 5(1), 1-4 Detailed reference viewed: 76 (10 ULiège)Lifting, Superadditivity, Mixed Integer Rounding and Single Node Flow Sets RevisitedLouveaux, Quentin ; in 4OR: A Quarterly Journal of Operations Research (2003), 1 In this survey we attempt to give a unified presentation of a variety of results on the lifting of valid inequalities, as well as a standard procedure combining mixed integer rounding with lifting for the ... [more ▼] In this survey we attempt to give a unified presentation of a variety of results on the lifting of valid inequalities, as well as a standard procedure combining mixed integer rounding with lifting for the development of strong valid inequalities for knapsack and single node flow sets. Our hope is that the latter can be used in practice to generate cutting planes for mixed integer programs. The survey contains essentially two parts. In the first we present lifting in a very general way, empha- sizing superadditive lifting which allows one to lift simultaneously different sets of variables. In the second, our procedure for generating strong valid inequalities consists of reduction to a knapsack set with a single continuous variable, construc- tion of a mixed integer rounding inequality, and superadditive lifting. It is applied to several generalizations of the 0-1 single node flow set. [less ▲] Detailed reference viewed: 125 (20 ULiège) |
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