Dissertations / Theses on the topic 'Gestion de l'approvisionnement – Méthodes de simulation'
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Bélanger, Valérie. "Analyse d'un réseau d'approvisionnement et de distribution : conception d'un modèle de simulation." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24851/24851.pdf.
Full textPech-Gourg, Nicolas. "Méthodes d'optimisation appliquées à l'industrie du liège." Angers, 2002. http://www.theses.fr/2002ANGE0044.
Full textSahu, Rabin Kumar. "Cadre général et méthodes d’optimisation pour la planification de stock en contextes industriels." Thesis, Lille 1, 2020. http://www.theses.fr/2020LIL1I019.
Full textReplenishment is one of the major activities which also incurs substantial costs. Its objective is to ensure adequate product availability at the demand points (either warehouses or point-of-sales) so that the associated cost is minimized. In practice, different optimization problems are encountered depending on the industry. In this dissertation, we propose a framework for generalized solution development for such diverse problems. Our contribution in this regard are in three areas. First, we propose a classification scheme for the optimization problems to facilitate common solution development. We take inspirations from Graham’s notations for scheduling problems.Secondly, we list key performance indicators (KPIs) to assess the performance of inventory management systems. We define a total of ten KPIs distributed under three categories: financial, operational and service and examine their usefulness. On the evaluation side, we examine the difficulties in comparing the performances of two inventory management systems and propose a simulation method to assess the relative performance.At last, we propose optimization methods for different replenishment problems. We first divide the optimization problems into two broad groups: long-term and short-term. The long-term group covers most strategic and some of the tactical decisions and the short-term group covers most operational decisions. We focus mainly on the short-term planning problems. These are again divided into two parts: single-item replenishment problems and multi-item (joint) replenishment problems. For the first class of problems, we propose a sample-based method for stationary demand and full backorder. The method is extendable to include additional problem parameters. We also propose a method based on dynamic programming for the general problem with non-stationary demand and the problem with supplier selection. For the second class of problems with multiple items, we focus on the replenishment planning problems during promotions in the presence of multi-item prepacks. We propose to address it in two phases. First, we propose a multi-objective approach that can be solved with CPLEX for small to medium size problem instances. For large problem instances, we reformulated the multi-objective problem into a single objective one. Then we propose a metaheuristic to obtain near optimal solutions in real time.One common thread of this dissertation has been to facilitate industrialization of the proposed solutions. Indeed, from the review of existing literature, we found that large gaps exist between academic consideration of inventory optimization problems and their use or maturity level in industries. We found that only 5% of the rigorous literature having some practical backing. This is primarily because of simplistic nature of the problem considered for research. This is justified since all the problem parameters cannot be considered in the mathematical model so that the model is solvable. On the contrary, one aspect that is ignored in practice is the practical viability of the solution and validation. Users increasingly want to scrutinize the results given by the machine. However, most systems lack a reasonable explanation or the evaluation of alternate solutions. Advancement in these areas will result in more adoption of academic research in the industries. To overcome these limitations , we meticulously examined the real-world problem instances and identified different problem parameters. We select the single-item stochastic replenishment problem for the first industrial implementation. The solution method was extended to include lost sales, multiple batch-sizes and service level constraint. Further industrialization is underway
Duvergey, Eric. "Contribution de la méthode d'appréciation par simulation à la formalisation d'un système de gestion du potentiel humain." Vandoeuvre-les-Nancy, INPL, 1987. http://www.theses.fr/1987NAN10287.
Full textRenaux-Hurel, Dominique. "Analyse et modélisation du processus boursier : proposition d'une methode de gestion de portefeuille." Lille 1, 1989. http://www.theses.fr/1989LIL10001.
Full textVilleminot, Alexandre. "Modélisation et simulation de la logistique d'approvisionnement dans l'industrie automobile : application pour un grand constructeur." Nancy 1, 2004. http://docnum.univ-lorraine.fr/public/SCD_T_2004_0232_VILLEMINOT.pdf.
Full textFaced with a production context in constant evolution, car manufacturers need to control their supply chain. Nowadays production systems are sa complicated that it is difficult to evaluate globally their performance, from the car order to the delivery. Our works contribute improve flexibility of logistics and to increase the reactivity in case of supply hazards. We propose so a supply flows modeling in purpose of simulation. In a systemic framewework, we propose also a UML meta-model of the flows, then instantiate to the PSA Supply Chain. Relevant indicators are then proposed for the global performance of logistic system. This modeling is implemented in simulation software (SimAppro) of ail the PSA Supplly Chain, connected ta the enterprise information systems. We propose and use next a validation process of the tool. Finally we apply our works to industrial problem. His aim is to answer of the just inventory security level without changing the Quality of Service. Results obtain with heuristics (decisional aspect) coupled to the simulator SimAppro(evaluation) let expecting the possibility of global decreasing of the inventory security level, with an increase produced quality
Perot, Thomas. "Quel est le niveau de détail pertinent pour modéliser la croissance d'une forêt mélangée ? Comparaison d'une famille de modèles et application aux peuplements mélangés chêne sessile - pin sylvestre." Paris, AgroParisTech, 2009. http://tel.archives-ouvertes.fr/docs/00/43/25/73/PDF/ManuscritTheseTPerotVF.pdf.
Full textAppropriate tools and models are needed for the management of mixed forests. The aim of this thesis is to show how the construction and the comparison of models with different levels of detail can help us to choose the most appropriate level to model the growth of a mixed stand. We developed a family of models at different levels of detail from data collected in mixed stands of sessile oak (Quercus petraea L. ) and Scots pine (Pinus sylvestris L. ) : a tree distance independent model (MAID), a tree distance dependent model (MADD), three stand models and an intermediate model bridging the MAID and the MADD. We ensured consistency between models using several approaches in order to make relevant comparisons. These models have given us some knowledge on the growth and dynamics of these forests, in particular on the spatial and temporal interactions between oaks and pines. Thus, we showed a compensatory growth phenomenon between the two species using the MAID. The MADD made it possible to show that, in these stands, the intraspecific competition was stronger than interspecific competition. A stand model developed from the MADD helped us to study the influence of mixing rate on production. To assess the quality of models predictions, we used an independent data set obtained by splitting our data. For example, we have shown that the MAID was more efficient than the MADD to predict individual increments. The models were also compared on examples of applications with short or medium term simulations. The proposed approach is of interest for both understanding the studied phenomenon and developing predictive tools. The different results of this work, allowed us to assess the relevance of a type of model for different contexts of use. This very general approach could be applied to the modeling of other processes such as mortality or regeneration
Revol, Jean-Luc. "Etude et réalisation d'un générateur d'illusions sensorielles : application : modélisation de la gestion des référentiels spatiaux." Grenoble 1, 1989. http://www.theses.fr/1989GRE10062.
Full textVersmisse, David. "Gestion de la complexité formelle et opérationnelle des systèmes complexes : application aux anthroposystèmes marins." Littoral, 2008. http://www.theses.fr/2008DUNK0201.
Full textJ. Von Neumann has referred to it as “the science of the 21st century” ; it can be found in numerous fields, gaining an ever growing importance : the Complex Systems Theory. The analysis of the Complex Systems Theory and its applications makes it possible to solve problems which could not be tackled before. Thanks to multimodelling and simulations on computers, experiments can now be completed which were not realizable in the past. This thesis tries to answer some questions on the topic of complex systems. First we worked on the numerical integration of a set of partial differential equations in a multimodelling context. We tried to apply our results by taking examples of complex systems from the models of fisheries. Then we proposed a tool for the coupling of difference equations. In cooperation with a team of biologists and economists at the Brest IFREMER center, we developed a model of the mixed fishery of hake-nephrop in the Bay of Biscay using this tool. This work took place in the context of a biodiversity ANR project. Finally, we used a variant of PBIL algorithm in order to calibrate a series of complex systems, again in the field of fisheries, but in partnership with the IRD center of Sète
Bostel, Nathalie. "Méthodes de simulation et d'optimisation appliquées à la gestion opérationnelle des chantiers de transbordement rapide." Châtenay-Malabry, Ecole centrale de Paris, 1996. http://www.theses.fr/1996ECAP0461.
Full textKieffer, Jean-Paul. "Les systèmes de production, leur conception et leur exploitation : situation actuelle et propositions pour une recherche appliquée en génie industriel." Aix-Marseille 3, 1986. http://www.theses.fr/1986AIX30036.
Full textGagliardi, Jean-Philippe. "Gestion des systèmes automatisés d'entreposage : simulation, optimisation et résultats empiriques." Thesis, Université Laval, 2012. http://www.theses.ulaval.ca/2012/29028/29028.pdf.
Full textFang, Zhong-Xue. "Gestion de barrages réservoirs à buts multiples : méthodologie et pratiques de la programmation dynamique." Montpellier 2, 1988. http://www.theses.fr/1988MON20122.
Full textDeschamps, Jean-Christophe. "Gestion hiérarchisée de cellules flexibles d'assemblage : concepts, modèles et simulation¨." Toulouse 3, 1994. http://www.theses.fr/1994TOU30269.
Full textBadeig, Fabien. "Un environnement actif pour la simulation multi-agents : application à la gestion de crise dans les transports." Paris 9, 2010. https://bu.dauphine.psl.eu/fileviewer/index.php?doc=2010PA090027.
Full textIn this Ph. D thesis, we propose a model of multi-agent simulation, Eass (Environment as Active Support for Simulation). The originality of this model is to integrate the simulation process in the modeling of the system. When a simulation is designed, the system modeling merges with its implementation in a simulation platform because (1) the activation of agents is managed by a global scheduler and (2) the action phase of agents, which incorporates the action selection mechanism, depends in part on the simulation platform. Our proposal is to outsource the evaluation of the local context of each agent and the selection of agent behavior, managing this assessment in a central entity which is the environment. To achieve this objective, it was necessary to reify the link between the context of an agent and its behavior, thanks to the principle Property-based Coordination which allows the representation and management of information related to the system components. Thus, modeling the system necessitates not only to model the behavior of the agent but also to model the behavior of the simulation taking into account the scheduling process. We built a functional architecture based on our model Eass which details the specifications that a simulation platform has to implement in order to support our model. To illustrate this architecture, two simulation platforms were developed : the rest is based on a coupling of existing tools that are the agent platform MadKit and the expert system generator Jess, the second is a new simulation plateform developed to tackle the limits to the use of existing tools. The application of our simulation model is a problem of crisis management in transport. To model the problem, it was necessary to take into account the organizational and communication constraints arising from the need to involve different services with their own protocols to manage crisis. To address this problem, an extension of the organizational model Moise integrating the modeling of the communication dimension of the organization, is used. We have added the simulation modeling, including the definition of agent behaviors, to this organizational modeling
Dumetz, Ludwig. "Simulation combinée des processus de production et des processus de pilotage : analyse comparative de stratégies de pilotage pour la production de bois d'oeuvre." Doctoral thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/30508.
Full textIn this thesis, we designed a simulation platform to compare and evaluate production planning and order management strategies for lumber production in North American sawmills. In our context, a strategy is composed of several parameters such as the choice of order acceptance policies, allowing to accept or refuse an order based on implemented rules, the choice of planning models and algorithms used at each stage of timber production, the choice of model at the tactical level, the coordination mechanisms used, to better coordinate the operations of several distinct entities or of several planning levels; this includes the exchange of information between tactical and operational planning levels or between entities / models used at the operational level to plan timber production. Today, it is extremely difficult for a company to know which management strategy to put in place. The general objective is then to evaluate and compare tactical and operational planning strategies for timber production, taking into account the company's market context and its production parameters. To achieve this goal, we divided it into four specific objectives that resulted in three publications. In the first specific objective, we developed a simulation model to represent the generation, acceptance and sale of an order for a sawmill. We coupled a production planning module to this simulation model that is responsible for inventory management and the generation of production plans. In a second objective, we use this simulation model to be able to evaluate the impact of order acceptance policies such as Available-to-promise (ATP), Capable-to-promise (CTP) and Stock policies on the company’s performance in terms of volume of accepted orders in a product flow environment diverge with co-production. Although these order acceptance policies have been widely studied in a traditional manufacturing context, the choice of one policy over another is far from being trivial in such a context of divergence flow. We show that in this type of context, the choice of an order acceptance policy rather than another depends strongly on the market and impacts the performance of the company, in terms of accepted orders and average annual inventory. This specific objective leads to the first publication. In a third specific objective, we evaluated coordination mechanisms used at the operational level between the different activities of the timber processing process, which is a decentralized process. The previous simulation platform has been adapted and previously published coordination mechanisms such as "Two-phase planning" or "bottleneck-first planning" are evaluated using a rolling horizon in an environment where orders are generated dynamically. We show that coordination mechanisms already published and tested in a static environment perform poorly in a dynamic environment. We therefore propose another "hybrid push / pull" coordination mechanism exploiting the decoupling point concept. This mechanism is better than the previous ones by allowing a greater number of sales, as well as a reduction in average inventory. This specific objective leads to a second publication. Finally, in a fourth specific objective, we are interested in production planning at the tactical and operational levels. We use the simulation model to compare and evaluate different information transmitted from the tactical level to the operational level by simulating the production system, the planning process and the market behavior. The tactical planning level is then taken into account to establish longer-term production planning. We show that the choice of the type of information to be transmitted from the tactical level to the operational level varies according to several factors, such as: the order acceptance policy (ATP, CTP) used by the company, the extent of seasonality selling prices, or whether or not being in an overcapacity market. This specific objective leads to third publication
Sanchez, Viera Talia. "Prédiction de comportements toxiques à partir des messages sur les réseaux sociaux." Master's thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/66590.
Full textThe objective of this study is to explore three different techniques to predict toxicity online community users. Our main motivation is to help the moderators of these communities to focus their efforts on users who are more likely to write toxic messages, and thus avoid wasting time and resources by monitoring the entire community. First, we created a mathematical model capable of predicting the five personality traits of the OCEAN model (Openness, Conscientiousness, Extraversion, Agreeableness and Neuroticism) and the three traits of the Dark Triad (Narcissism, Machiavellianism and Psychopathy) for auser, based on their writing style and choice of vocabulary. The experiments we performed with this model on users of the Twitter and Reddit communities have shown that there is a relationship between a user’s personality and the level of toxicity of their messages. In particular, we found that users with high values of narcissism, Machiavellianism and psychopathy andlow values of conscientiousness and agreeableness were more likely to write toxic messages. For our second technique, we applied clustering algorithms on the predicted personality traits andon the observed language characteristics. This allowed us to show that it is possible to detect clusters of potentially risky users without having to create a profile for each user. Finally, we created a regression model to estimate the level of toxicity of users based on their linguistic attributes alone. We observed that the users predicted to have higher toxicity levels by our regression model are also those who have a very high value of Dark Triad traits according to our personality model.
Vasconcelos, Elisio C. "Outils d'aide à la gestion du patrimoine réseau d'assainissement non visitable." Bordeaux 1, 2005. http://www.theses.fr/2005BOR12970.
Full textBaudet, Philippe. "Ordonnancement à court terme d'un atelier discontinu de chimie : cas du fonctionnement job-shop." Toulouse, INPT, 1997. http://www.theses.fr/1997INPT010G.
Full textLagroue, Pierre-Yves. "Pilotage d'un centre de tri du courrier : vers une approche intégrée des systèmes d'information, de la gestion de production et du contrôle de gestion." Paris 1, 2001. http://www.theses.fr/2001PA010002.
Full textInformation systems, operations management and management control problems can be encountered while controlling make-to-order production systems whose demand is heavily random. Requirements for reactivity , flexi- bility and efficiency are linked to predictibility and capacity definition for these kinds of job shop. In this context, capacity definition is dependent upon the nature of the demand as weIl as operations decisions. Traditional opera- tion management and management control tools do not satisfy these require- ments. The purpose of this paper is to present a methodology for the analysis and conception of management systems that rely on simulation. The approach utilised clarifies how simulation can be used as an integration tool for both operations management and management control. This research explains what can be implemented to respond to the needs of production managers. In addition, it also details how information systems must be conceived in order to provide the relevant information for such implementation
Jia, Tianqiang. "Vers une meilleure gestion des ressources d'un groupe autonome de fabrication." Tours, 1998. http://www.theses.fr/1998TOUR4023.
Full textBerchet, Claire. "Modélisation pour la simulation d'un système d'aide au pilotage industriel." Grenoble INPG, 2000. http://www.theses.fr/2000INPG0133.
Full textLarnac, Mireille. "Gestion de la Condition de Chemin dans la simulation symbolique." Phd thesis, Montpellier 2, 1992. http://tel.archives-ouvertes.fr/tel-00866197.
Full textHafez, Névine. "Conditions d'équilibre et gestion d'unités de transport en libre service avec demandes aléatoires." Metz, 1999. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1999/Hafez.Nevine.SMZ9926.pdf.
Full textGorecki, Simon. "Utilisation de modèles métiers pour l'orchestration d'une simulation distribuée fédérant la gestion des risques." Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0236.
Full textNowadays, modeling and simulation (M&S) plays a central role in the dimensioning of business processes in industry due to a significant increase in the number of components involved. The combination of components produces a complex system and induces a proportional increase in project risks. Consequently, it is necessary to characterize and control them in models and simulation. In addition, since the system is the association of different domains, actors must be able to perform simulations integrating specific, independent, heterogeneous and distributed components. Several co-simulation standards propose mechanisms to orchestrate distributed components. Among them, two standards: High Level Architecture (HLA) and Functional Mock-up Interface (FMI) allow the association of heterogeneous components and respectively have advantages in terms of behaviour expression and time management. However, their implementation remains complicated with process management tools and a need for compatibility is always expected. In addition, joint implementations of the two standards present problems in aligning concepts and methods for a global orchestration of the two standards.In this research work, we propose the development of a modeling and simulation platform in order to apprehend in a more formalized way the complexity of the industrial context. Our objective is to propose a method and a modular tool capable of solving different industrial problems. Each research topic presented here will be treated by an extension of the platform whose role is to respond to a problem related to a different complexity:- Modeling and simulation of the risks inherent to an industrial context:We propose an extension capable of externalizing the definition of contextual risks outside of a simulation model, in order to facilitate their development and simulation.- Integration and interaction between two cosimulation standards (HLA and IMF) :We propose the adaptation of our M&S platform to the piloting and communication of the two cosimulation standards.- Modeling and orchestration of a distributed simulation :We propose the use of a graphical language integrated to the platform for the piloting of a distributed HLA simulation.These contributions are operationalized and experimented in the field of the production of mobile solar energy plants by the company ALSOLENTECH. Indeed, this company has expressed needs that fit well with our research problems, it provides us with a case study and application and exploits our work from the concepts to the exploitation of the proposed solutions
Rubaszewski, Julie. "Optimisation de la conception du stockage de déchets radioactifs HA-MAVL à l’aide de la gestion de flux." Thesis, Troyes, 2013. http://www.theses.fr/2013TROY0024/document.
Full textThis research project is part of a partnership between ANDRA (National Agency for Radioactive Waste Management) and the LOSI, Institut Charles Delaunay (TSR UMR CNRS), UTT.The thesis aims to design the storage structures for various industrial flows. Flows involved are varied in nature and it is one of the characteristics of the storage. The works must be designed to effect a gradual development, from a "coactivity", that is to say, a coexistence of nuclear flux (the nuclear waste packages and the associated flow, such nuclear ventilation) and conventional flow sites. The design flow and the design of structures to allow these flows are therefore at the heart of the design process of storage.The problem of our industrial partner focuses on flow path design. Our contribution is dedicated to the development of models of flow path design with new constraints and the development of methods. Extensions to the basic model takes into account different type of vehicle, not allowed some segments and taking into account construction costs. Different optimization methods have also been developed and tested. Metaheuristics are based on local search, the ant colony algorithm and the algorithm of bees. Efficiency of methods is demonstrated through tests on literature benchmarks and application to the real case is done by simulation
Bellera, Jacques. "Contribution à la gestion de ressources dans un système de production." Montpellier 2, 1990. http://www.theses.fr/1990MON20084.
Full textLobos, German. "La gestion du risque dans l'industrie vitivinicole du Chili : modélisation logistique et simulation des risques spécifiques." Montpellier 1, 2009. http://www.theses.fr/2009MON10024.
Full textThe main objective of this study is to contribute to a better knowledge of the wine-growing industry in Chile regarding the development of risk management tools, the modeling of some subjective characteristics of the producers and the disposition to take out insurances and/or use public instruments, as well as the simulation of some specific risks. The thesis is structured in four parts. The first one is related to “Risk Management in the Agricultural Sector” and it includes an analysis of the main sources of risk, the definition of risk aversion, the risk management strategies and the instruments for the financial coverage strategies. The second part includes a “Description of the Wine-growing Sector” in the international world and in Chile, as well as of the high industrial concentration in the Chilean wine market. The third part, called “Exploring the Risks of the Wine-growing Sector”, consists of an analysis of a questionnaire applied to a sample of 104 wine-growers in all the wine producing zones of Chile. The growers' disposition to take risks and the perceptions of the sources of risk are analysed. In addition, the position of the wine-growing companies towards the market and the growers' perception of the futures market, the weather derivatives, the insurance contracts and the public instruments are presented. The fourth part is about “Simulation and Forecast Models for Specific Risks” in the wine-growing sector. It includes the conceptual frame of the stochastic processes, non-stationarity proofs and the formal construction of the forecast models. Finally, the conclusions of the thesis and the cited literature are presented
Benmansour, Senouci. "Modélisation de l’activité routière en vue de son intégration dans la chaine logistique." Le Havre, 2009. http://www.theses.fr/2009LEHA0026.
Full textThe work of this thesis contributes to use the Bond Graph (BG) approach to develop both simple and rigorous road traffic model, which extends a large road networks and easily adapted to the aimed analysis level. This model allows us to describe the global dynamic behavior of the traffic on road networks, by taking into account its specificity through all the network components, such as road sections, intersections, highway on and off ramps, toll stations, etc… Moreover, it makes it possible to focus on the behaviour of individual vehicles and their interactions at certain locations on the network requiring precision. This homogeneous description of the traffic in any point of the network and at any moment offers a greater simplicity and a great unity in comparison with the existing traffic models. Given the characteristics of this road network BG model, significant contributions can be brought to control and supervise the traffic. To extend this BG traffic model to study the dynamic behavior of physical flow on supply chain, we have transposed the concepts developed for the traffic to the supply chain
Desprez, Caroline. "Optimisation et simuation d'un système de production : application à la fabrication de sous-ensembles nucléaires." Troyes, 2008. http://www.theses.fr/2008TROY0016.
Full textThis work aims at optimizing the production system of CEA Valduc, a hybrid re-entrant flow shop with multi-resource operations. We try to minimize the weighted number of tardy jobs. For this purpose, it is necessary not only to develop efficient production planning and scheduling methods, but also to find out the best value for some parameters of the system. There is no result on this problem in the litera-ture. We first work on developping a scheduling method. We begin by studying a subproblem with only two machines. One of them is re-entrant. We give analytical optimal solutions, based on mathematical properties, for all the cases except one for which we give a domi-nance property. For the general problem, we use a Genetic Algorithm. We propose a new coding by type of operations, adapted to serial production problems. A first algorithm focus on operation scheduling only, with fixed resources. We then design a second algorithm, adding a resource allocation part. To check the efficiency of the algorithms, we compare them with a commer-cial software package. Thesecond yields much better solutions than the commercial software. After that, we work on the system parameters. In order to find out their best values, we simu-late the performance of the system according to various configurations using the second scheduling algorithm. Using Design of Experi-ments, we determine the configurations to test. We manage to model the system behaviour using a Neural Network, which we can use to find out the influent parameters of the systems and hence the optimal configuration
Bouzid, Djamila. "Gestion du trafic temps réel dans le réseau ATM." Toulouse 3, 2002. http://www.theses.fr/2002TOU30037.
Full textGhorbel, Nouha. "Gestion des réapprovisionnements périodiques de pièces de rechange sous incertitudes pour le MCO de parcs de matériels : maîtrise du risque de rupture des stocks." Paris 8, 2013. http://octaviana.fr/document/18833517X#?c=0&m=0&s=0&cv=0.
Full textThis thesis present a logic of modeling to define a Bayesian model that can provide for each time period, the level of stock and estimated costs of acquisition and storage and costs induced by the shortage of SP. These results are obtained as long as we provide the level of stock at the beginning of the period and the unit costs and indicated if the period is forced or delayed supply. This is in fact a black box for the user (responsible for inventory management of spare parts, maintain in operational conditions. . . ) which can transcribe the consumption process and therefore the need of a type of SP. We have explained that this black box would be an elementary block associated with a type of SP and the overall inventory management of spare parts should be possible by linking several elementary bricks, subject to the extension of this article. In this thesis, we saw how we reduced the codification of all possible consumption scenarios of SP to combine a set of indicators available naturally in the beginning of replenishment period as the RF, RR, RI,. . . We called the multiplexing step, a term borrowed from the Boolean logic used for the composition of functions in digital electronics. This concept of multiplexing allowed to make possible Bayesian inference because algorithms and tools available are suitable for discrete event simulation and the size of the state space contributes directly to increasing the combinatorial of calculation. For the remainder of this research, we give all the construction elements of particle model of inventory management of spare parts of the model (mT, s *, S) where the period T is variable in order to ensure procurement at lower cost. This approach is verified by the implementation of the model on BayesiaLab by presenting tests and simulation results. We also think about the simulation scenarios with real consumption replenishment cases to evaluate performance in an inventory management service
Alkassem, Khaled. "Evaluation et pilotage des flux manufacturiers : réflexions et propositions." Phd thesis, Université Henri Poincaré - Nancy I, 2007. http://tel.archives-ouvertes.fr/tel-00171059.
Full textLa partie bibliographique du mémoire expose des définitions courantes et les principes généraux utilisés pour l'étude des flux, puis deux approches particulières : l'approche énergétique et la théorie du trafic. Sur ces bases est ensuite proposée une liste de variables pouvant qualifier un flux à trois niveaux différents et considérés comme complémentaires (les produits dans le flux, les supports du flux et le flux lui-même).
Sur les bases des analyses bibliographiques menées, des propositions de différents ordres sont ensuite faites. La première d'entre elles se concentre sur la définition de variables ou concepts pouvant qualifier un flux hétérogène d'objets discrets. La seconde est une adaptation du tétraèdre de Paynter aux flux manufacturiers. Enfin, un macro-modèle de simulation des flux manufacturiers est proposé.
Ces propositions sont partiellement validées par simulation.
Leon, Mojarro Benjamin de. "Contribution à l'amélioration de la gestion des périmètres irrigués." Montpellier 2, 1986. http://www.theses.fr/1986MON20182.
Full textLamy, Damien. "Méthodes et outils pour l'ordonnancement d'ateliers avec prise en compte des contraintes additionnelles : énergétiques et environnementales." Thesis, Université Clermont Auvergne (2017-2020), 2017. http://www.theses.fr/2017CLFAC053/document.
Full textThis doctoral work addresses three themes: (i) the scheduling of multi-path production systems and more specifically the Job-shop subjected to a power threshold; (ii) the resolution of a scheduling and assignment problem in the context of a flexible production system modelled as a Flexible Job-shop; (iii) the coupling methods between simulation and optimisation in the context of Job-shop problems with uncertainty. Different resolution approaches are applied for each problem: a mathematical formalisation is proposed as well as several metaheuristics (GRASP×ELS, VNS, MA, hybrid NSGA-II and iterated GRASP×ELS) for the Job-shop with power requirements. An extension of the GRASP×ELS, denoted GRASP-mELS, is then proposed to solve a Flexible Job-shop problem; different neighbourhood systems used during the diversification and intensification phases of solutions are also presented. The results show that the performances of the GRASP-mELS are comparable to the methods presented in the literature both in terms of quality of solutions and computation time. The last topic concerns the coupling methods between optimisation and simulation with two problems: 1) a Stochastic Job-shop and 2) a Reactive Flexible Job-shop. The resolution methods are based on metaheuristics and the SIMAN simulation language integrated in the ARENA environment. The results show that both approaches allow to better take into account the random aspects related to the reality of production systems
Aouiche, Ismail. "Dynamique morphosédimentaire de la baie d’Agadir : approche multi-méthodes et préconisations pour une gestion intégrée de la zone côtière." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM3017/document.
Full textCoastal systems where sediment transport is perturbed by engineering interventions on the shoreline and shoreface commonly provide fine examples liable to throw light on these links. This is especially so where shoreface bathymetric datasets, which are generally lacking, are collected over time, enabling more or less fine resolution of the meso-scale coastal sediment budget. Agadir Bay and the city of Agadir together form one of the two most important economic development poles on the Atlantic coast of Morocco. Using a combined methodological approach based on wave–current modelling, bathymetric chart-differencing, determination of shoreline fluctuations, and beach topographic surveying, we highlight the close links between variations in the bed of the inner shoreface and the bay shoreline involving both cross-shore and longshore sand transport pathways, sediment budget variations and new sediment cell patterns. This work discusses also the morphological changes and evolution of Agadir Bay beach (Morocco) in response to eight storms between January 2014 and March 2014. A comparison is carried out of the evolution and variability of the beach in a sector of the bay protected by the commercial harbour of Agadir relative to a sector down drift of the harbour that is more exposed to waves, and changes affecting the beach following these storms are examined. Wave influence is evaluated using numerical simulations. The results show that despite being of relatively low intensity, the two first storm events, and especially storm 1, are responsible for major beach morphological changes
Rojo, Gabriel. "La gestion dynamique des déchets (GDD) : élaboration d'une approche intégrée d'aide à la décision visant à soutenir une gestion systémique et évolutive des déchets." Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 2009. http://tel.archives-ouvertes.fr/tel-00772106.
Full textAlia, Claude. "Conception et réalisation d'un modèle didactique d'enseignement de la gestion en milieu professionnel." Montpellier 2, 1992. http://www.theses.fr/1992MON20150.
Full textChu, Thanh Quang. "Using agent-based models and machine learning to enhance spatial decision support systems : application to resource allocation in situations of urban catastrophes." Paris 6, 2011. http://www.theses.fr/2011PA066256.
Full textLetourneau, Jean-Jacques. "Approche globale pour la simulation et la conception de procédés : application à des unités de séparation interconnectées." Toulouse, INPT, 1992. http://www.theses.fr/1992INPT045G.
Full textPina, Fulano Jasson. "The value of hydrological information in multireservoir systems operation." Doctoral thesis, Université Laval, 2017. http://hdl.handle.net/20.500.11794/28228.
Full textThe optimal operation of a multireservoir hydroelectric system is a complex, multistage, stochastic decision-making problem involving, among others, (i) a trade-off between immediate and future consequences of a decision, (ii) considerable risks and uncertainties, and (iii) multiple objectives and operational constraints. The reservoir operation problem is often formulated as an optimization problem but not a single optimization approach/algorithm exists. Dynamic programming (DP) has been the most popular optimization technique applied to solve the optimization problem. The stochastic formulation of DP (SDP) can be performed by explicitly considering streamflow uncertainty in the DP recursive equation. Different approaches to incorporate more hydrologic and climatic information have been developed and have revealed the potential to enhance SDP- derived policies. However, all these techniques are limited to small-scale systems due to the so-called curse of dimensionality. Stochastic Dual Dynamic Programming (SDDP), an extension of the traditional SDP developed in the 90ies, is one of the few algorithmic solutions used to determine the operating policies of large-scale hydropower systems. In SDDP the hydrologic uncertainty is captured through a multi-site periodic autoregressive model. This analytical linear model is required to derive some of the parameters needed to implement the optimization technique. In practice, reservoir inflows can be affected by other observable variables, such snow water equivalent and/or sea surface temperature. These variables, called exogenous variables, can better describe the hydrologic processes, and therefore enhance reservoir operating policies. The main objective of this PhD is to assess the economic value of SDDP-derived operating policies in large-scale water systems using various hydro-climatic information. The first task focuses on the incorporation of the multi-lag autocorrelation of the hydrologic variables in the SDDP algorithm. Afterwards, the second task is devoted to the incorporation of different exogenous hydrologic variables. The hydroelectric system of Rio Tinto (RT) located in the Saguenay-Lac-Saint-Jean River Basin is used as case study. Since, RT’s hydropower system is not able to produce the entire amount of energy demanded at the smelters to fully assure the aluminum production, a portfolio of energy contacts with Hydro-Québec is available. Eventually, we end up with a decision support system for the management of a large portfolio of physical and financial assets using various hydro-climatic information. The overall results reveal the extent of the gains in energy production that the operators can expect as more hydrologic variables are included in the state-space vector.
SADEFO, KAMDEM Jules. "Méthodes analytiques pour le Risque des Portefeuilles Financiers." Phd thesis, Université de Reims - Champagne Ardenne, 2004. http://tel.archives-ouvertes.fr/tel-00009187.
Full textEssaid, Mohand. "Modélisation et simulation de la connectivité des flux logistiques dans les réseaux manufacturiers." Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 2008. http://tel.archives-ouvertes.fr/tel-00783593.
Full textLi, Xiaohui. "Ordonnancement de la production : systèmes hybrides." Troyes, 2011. http://www.theses.fr/2011TROY0015.
Full textThe work presented in this thesis is a part of the MOSYP, state-region project. The goal of this project is to develop tools and techniques to improve the competitiveness of production systems. The objective is to analyze the variables of the studied systems and to propose efficient functioning models. In this work, parallel machines scheduling problem and a hybrid flowshop scheduling problem (HFS) have been studied. The sequence dependent setup times, the released date and the due date are considered. A multiobjective resolution has been adopted and two criteria are considered: the makespan (maximum duration of treatment) and the total tardiness. Mathematical formulations, an exact resolution and approximated methods are proposed. The latter are based on evolutionary algorithms: NSGA-II and SPEA-II. A fuzzy logic controller is used to improve the parameters settings of these algorithms. Then, an algorithm based on the Lorenz dominance is adapted to improve the efficiency of the Pareto front. A new decomposition method is also proposed to decompose the HFS problem into sub-problems. To prove the efficiency of these algorithms, an exact method (TPM) is developed to identify the optimal solutions. Finally, a simulation based optimization method is tested. A practical case study proposed by the project partners has been conducted. A simulation model under the ARENA software is proposed to evaluate the performances as well as an optimization technique
André, Virginie. "Problème de livraison - collecte dans un environnement hospitalier : méthodes d'optimisation, modèle de simulation et couplages." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2011. http://tel.archives-ouvertes.fr/tel-00824815.
Full textAlimazighi, Zaia. "Conception et spécification de systèmes d'information : analyse comparative de méthodes et utilisation du langage Ada." Paris 6, 1986. http://www.theses.fr/1986PA066197.
Full textBotta-Genoulaz, Valerie. "Principes et méthodes pour l'intégration et l'optimisation du pilotage des systèmes de production et des chaînes logistiques." Habilitation à diriger des recherches, INSA de Lyon, 2005. http://tel.archives-ouvertes.fr/tel-00287091.
Full textCe besoin d'intégration se fait sentir au niveau de l'entreprise, d'un groupe ou d'une chaîne logistique globale, au travers de projets ERP (Enterprise Resource Planning, Progiciel de Gestion Intégrée) et de projets SCM (Supply Chain Management, Gestion de la Chaîne Logistique Globale, Intégrée ou Etendue). Il se décline en plusieurs problématiques de recherche ou « verrous » tant du point de vue de l'intégration, des systèmes intégrés, des méthodes de modélisation et d'optimisation des systèmes de production que de leurs conditions de pertinence et d'efficacité, de leur mise en œuvre et de leurs usages.
Dans contexte, je me suis particulièrement intéressée à rechercher et concevoir des méthodes et outils pour aider et accompagner les entreprises dans leurs démarches d'intégration et d'optimisation de leur pilotage. D'où le titre de ce mémoire : Principes et méthodes pour l'intégration et l'optimisation du pilotage des systèmes de production et des chaînes logistiques.
Je développe mes contributions dans les domaines de la gestion et du pilotage des chaînes logistiques et de la conduite de projets d'intégration intra ou interentreprises selon l'articulation suivante :
- Analyse des systèmes de production et des chaînes logistiques et optimisation de leur pilotage : approche intégrée d'aide à la décision en ordonnancement et planification, modélisation et optimisation de la traçabilité dans les chaînes logistiques, modélisation et optimisation des processus de pilotage des chaînes logistiques.
- Evaluation des projets d'intégration : méthodologies ou référentiels de gestion de projet d'intégration, modélisation d'entreprise pour l'implantation d'ERP, impact des typologies d'entreprise (production de biens – production de services) sur les projets d'intégration, mesure de performance de projets d'intégration, évaluation de l'intégration (mesures, indicateurs...).
- Impact de l'intégration et (ou) des systèmes intégrés de gestion sur (ou en interaction avec) le pilotage des chaînes logistiques : contribution des progiciels intégrés (ERP, APS...) à la planification des chaînes logistiques, contribution du partage d'information à la performance des chaînes logistiques et mesure de la collaboration dans les chaînes logistiques.
Ces contributions sont positionnées vis-à-vis de l'état d'avancement des travaux dans ces domaines, et des prospectives de recherche sont proposées.
Oualidi, Mohamed Najib El. "Contributions du management de projet dans le processus de création d'entreprise." Lille 1, 2003. https://pepite-depot.univ-lille.fr/RESTREINT/Th_Num/2003/50374-2003-19.pdf.
Full textJolivet, Simon. "Caractérisation tribodynamique de la bruyance denture pour la gestion du confort acoustique des conditions d’engrènement en fabrication." Thesis, Paris, ENSAM, 2015. http://www.theses.fr/2015ENAM0041/document.
Full textUpcoming fuel economy standards result in the rapid development of electric and hybrid vehicles. Such regulatory demands will affect the transmission design, which drives changes in the type, size and quality levels of gears. Thus, gear manufacturers need to create high quality gear flanks with special topological modifications. The main objectives are to increase the load-carrying capacity of gears, and also to reduce the gear noise behavior. The teeth surface is indeed at the heart of the gear meshing mechanics and one of the elements generating excitations. The most common wear mechanisms in gear are micro-pitting, pitting and spalling, which occur on the teeth surface at the early stage of failure. While the effect of the macro-geometric defects of the gear teeth surface on the acoustics response of spur gear pair has been studied quite thoroughly, the micro and meso scales and their influence are not entirely understood. Moreover, the choice and optimization of the tooth flank finishing process (grinding, powerhoning…) to manage the acoustic comfort of the meshing conditions is still a major issue in gear manufacturing. This study addresses a multiscale manufacturing approach, both experimental and numerical, in order to identify the scale effect of micro/meso defects on gear vibrations. A low-powered instrumented vibratory test bench has been developed and validated by comparing the measurements with the ones done at the industrial scale on a gear box test rig from Renault. The experimental work investigated the relationship between the surface finish of tooth flanks, which was characterized using a multiscale decomposition based on continuous wavelet transform, and the modes of the generated vibrations as a function of roughness and waviness scales. The friction noise measurements on tooth flanks have besides permitted to understand the link between the contact kinematics (speed), the surface scales (space between the asperities) and the vibration frequencies. A 3D finite-element simulation model of a rough contact was hence developed. The results coupled with the statistical analysis of the contributions of the surface and contact parameters have shown the large effect of the micro-scales. A 3D finite-element gear simulation using real measured topographies and transmission error calculation has also been performed and experimentally validated. The prevalence of the gear quality and its topological features on power density and sound issues are hence computed and discussed
Haddad, Ramzi. "Coordination des conflits aériens en présence d’incertitudes : Une étude basée sur l'ordonnancement à contraintes de ressources." Compiègne, 2006. http://www.theses.fr/2006COMP1634.
Full textThe volume of the air traffic increased 80% in ten years, a growth that is called to continue. The improvements of the present systems of air-traffic management should permit to face this increase until the middle of the next decade. Ln response to this necessity, this thesis work is located between the junctions of two domains: project resources constraints scheduling and the air-traffic coordination. We constructed a dynamic system that permits to resolve air traffic management problems under uncertainties while integrating various techniques adapted to the hazards existing in the context. Our privileged application domain was the coordination (En-Route) of the aerial traffic. This type of project presents features raising form scheduling and organization under uncertainties domains