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Academic literature on the topic 'Logistique (Organisation) – Modèles mathématiques – Études de cas'
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Dissertations / Theses on the topic "Logistique (Organisation) – Modèles mathématiques – Études de cas"
Nde, Pekuelkue Hornella Sylvanie. "Optimisation des transferts inter-sites chez un fabricant de produits agricoles." Master's thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/67800.
Full textThis master thesis addresses the issue of inter-plants transfers. Although used as a strategy to increase products availability, manage unanticipated stock-outs, and improve service levels, inter-plant transfers tend to become a burden on companies when inventory management is inefficient and decentralized. Indeed, they generate important costs and contribute to greenhouse gas emissions. Thus, they must be optimized. In collaboration with an industrial partner in the agricultural sector, this project aims to optimize costs and emissions linked to inter-plant transfers. In order to achieve that, we model and solve an inventory transshipment problem in which the objective function minimises total costs consisting of transshipment, distribution, inventory, and renting costs. Our results show that significant gains can be achieved through centralized inventory management and integration. We observe savings between 36.86% and 99.92% for transshipment costs, 41.33% and 99.98% for emissions linked to transfers, and 0.56% and 92.48% for the total cost. This document is organized as follows. First, a general introduction is presented. Then, data are analyzed in Chapter 1. The optimization problem is solved in Chapter 2. Finally, our conclusions and directions for future work are presented.
Feki, Yassine. "Opérationnalisation des stratégies de sélection des prestataires logistiques." Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/29826/29826.pdf.
Full textCarle, Marc-André. "La métaheuristique CAT pour le design de réseaux logistiques déterministes et stochastiques." Thesis, Université Laval, 2012. http://www.theses.ulaval.ca/2012/29637/29637.pdf.
Full textBeauregard, Benjamin. "Comparaison de modèles de régression logistique utilisés pour l'analyse de données recueillies dans le cadre d'études de type cas-témoins appariés sur le déplacement animal." Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/29800/29800.pdf.
Full textSarrazin, François. "Intégration d’un centre logistique au sein d’un réseau d'entreprises forestières : impact et analyse." Doctoral thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/35433.
Full textThe forest industry represents an important part of Quebec’s economic activity and many local communities depend on this sector. In natural forests, the great diversity of tree species and quality brings an added complexity for sorting operations and the flow of resources. Furthermore, the remoteness of the resource implies high transportation costs. Scientific literature demonstrates that sharing transportation capacity can result in important cost reductions (Epstein et al. 2007), but is quite complex to put into place (Frisk et al.2010). Finally, the transition from push systems towards pull type supply chains and the recent difficulties for this industry (decline of the pulp and paper sector, housing crisis of 2008-09, etc.) make it all the more relevant to examine how to better use the wood resource. In this regard, the creation of sort yards, distinct from both the harvesting sites and the mills, offers many opportunities for maximizing value and minimizing costs. Such centers however, represent an important challenge in regards to their daily management and their insertion in the pre-existing logistics network. We therefore hypothesize that for certain economic, logistical and environmental factors, a logistics center comprised of a sort yard and transportation coordination, could generate cost savings, especially through the use of oversize trucks (Chan et al. 2008) and lower sorting costs (as can be deduced from Favreau 1995). We also sense that the sorting activities performed in such a center would also procure an added economic value for companies using its services by limiting the error rate in the classification of the logs, as presented in Sessions (2005). The purpose of this thesis is therefore to identify key factors regarding their impact on the profitability of a regional forest logistics center, combining a specific sort yard and the use of backhauling. Following this, we consider these factors in the development of a profit maximization model for a forest logistics network with the option of using such a sort yard and/or backhauling. This model was first applied to a fictitious but realistic case using generated data in order to estimate the magnitude of potential profit improvements which reached up to $ 0.88 per m3 available for harvest. The model was then applied to optimize a real and complex network to analyze its performance as well as slightly modified versions. A sensitivity analysis was also conducted and revealed that many factors such as distances from the harvesting zones, the number of oversize trucks and the level of stumpage fees had a significant influence on the profitability of such a center. In addition, a dynamic effect between the operation of the yard and the use of backhauling was observed for the real case. The addition of a sort yard allows to reduce the average length of delivery routes by breaking in two the flow of material between the harvesting areas and the production mills. This makes it easier to fit delivery routes within the legal driving time limit. Most importantly, such a yard can serve both as an origin and a destination, therefore opening the door to important reductions in deadheading.