Dissertations / Theses on the topic 'Électricité – Gestion de l'approvisionnement'
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Fontaine, Tiphanie. "Le marché de capacité français : la place des énergies renouvelables en présence d'incertitude." Thesis, Paris 10, 2018. http://www.theses.fr/2018PA100056/document.
Full textThe problematic of this thesis focuses on the impacts of the French capacity marketon the deployment of renewable energies in the presence of uncertainty. This marketis set up in France in order to cover high peaks in electricity consumption. It asks suppliers to ensure the consumption of their customers at these peaks by buying guarantees from electricity producers. This mechanism compensates for theavailable capacity during periods of tension between supply and demand, and itsvaluation depends on its contribution to security of supply. Due to their intermittent nature, the remuneration of renewable energies is more uncertain than for other means of electricity production. This thesis studies the adequacy between a goal of security of supply and a goal of deployment of renewable energies, two aims of the French government
Gobeil, Pierre. "Étude de la fonction approvisionnement au Ministère des transports du Québec dans le but de dégager des améliorations ou ajustements au niveau organisationnel /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1985. http://theses.uqac.ca.
Full textJEUNET, JULLY. "Modèles d'approvisionnement de type MRP : évaluation et robustesse." Université Louis Pasteur (Strasbourg) (1971-2008), 1997. http://www.theses.fr/1997STR1EC01.
Full textEvery production system has a procedure for deciding when to have material delivered or produced. These decisions are referred to as lot-sizing decisions. Performance of lot-sizing techniques is generally evaluated on the basis of cost effectiveness and computational time. Nevertheless, this static evaluation ignores the manner in which decisions are implemented in practice, when demands vary. By considering demand variability, lot-sizing techniques do not exhibit the same degree of instability in planned orders. Therefore, we propose another measure of performance we call robustness. We define the robustness of a lot-sizing model as the degree of stability in planned orders it provides, in response to changes in demand estimates. We first study the robustness and cost-effectiveness of models in both single-level and multi-level contexts. Simulations show there exists an inverse relationship between robustness and optimality. Second, we improve an optimal multi-level lot-sizing model (steinberg, napier-management science, 1980), in term of computational time. We write an analytical procedure for eliminating the variables which optimal value is always null. Simulations suggest the effectiveness of that procedure: reduction of the size of the optimization programm implies a reduction in computational time
Meqdadi, Osama. "Interaction approach for exploring sustainability spread in supply networks." Nantes, 2015. http://www.theses.fr/2015NANT4019.
Full textThe integration of sustainability with supply networks has become a salient issue that companies seek to achieve in order to enhance their competitiveness. Although there is a considerable body of research that concerns sustainability integration with supply chain management, there is still a lack of understanding on how companies can spread sustainability across their supply networks and what strategies to adopt to achieve that. This thesis acknowledges this research gap and adopts the Industrial Marketing and Purchasing (IMP) interaction approach where change concept and relationship characteristics, particularly power and trust, are utilized to investigate sustainability spread across supply networks. Accordingly, this thesis adopts a supply network perspective to study what influences companies to adopt certain sustainability strategies, how sustainability initiatives spread to suppliers and across supply networks, and impact of power and trust on sustainability spread within supply networks. The thesis revealed five strategies, reactive, proactive, reactive monitoring, proactive mentoring and integrating, that contribute to better understanding of how companies can adopt certain strategies to spread sustainability within companies and across supply networks. The findings indicate that power impact is evident in implementing the reactive monitoring strategy where coercive power has significant impact on influencing suppliers to spread sustainability. Trust and non-coercive power appear to enhance implementing the proactive mentoring and integrating sustainability strategies and spread of sustainability across supply networks
Chauhan, Satyaveer Singh Proth Jean-Marie. "Chaînes d'approvisionnement approches stratégique et tactique /." Metz : Université Metz, 2008. ftp://ftp.scd.univ-metz.fr/pub/Theses/2003/Chauhan.Satyaveer_Sing.SMZ0321.pdf.
Full textZiedi, Raja. "Stratégies d'approvisionnement dans un contexte d'enchères de bois." Master's thesis, Université Laval, 2016. http://hdl.handle.net/20.500.11794/26819.
Full textSripathomswat, Kanokporn. "Comparaison de différentes politiques d'approvisionnement et de distribution dans un réseau logistique : problèmes de localisation des produits." Grenoble INPG, 2008. http://www.theses.fr/2008INPG0083.
Full textNaoui, Rihabislam. "Stratégie de gestion de stocks dans un réseau collaboratif." Master's thesis, Université Laval, 2016. http://hdl.handle.net/20.500.11794/27116.
Full textThe content of this paper deals with the inventory management problem in a network of many consumer products storage locations. Each location autonomously manages its stock to satisfy a deterministic demand over a given horizon. A maximum quantity of stock Si is held at each site i. When the reorder point si is reached, an order Qi is placed to the distribution center which supplies all sites. Qi is such that Qi = Si - si. The amount Qi is delivered with a known lead-time Li. If, at a given time, the Di demand at location i exceeds the on-hand inventory, the location i uses one or more other network locations for a lateral transshipment of a quantity Xji (j = 1, 2... n) from location j to location i. This lateral transhipment is made according to a number of rules that take into account transshipment cost, holding cost, replenishment cost and shortage cost. This thesis examines six key contributions published in the literature to assess the contributions of a collaborative model to performance, in terms of cost and service level, at each network location. This investigation is limited to a two-level network configuration: a central warehouse and n (n > 2) storage locations. The case of repairable spare parts, characterized by a random demand, is examined in three chapters of this memory. Another application of these strategies to collaboration between n hospitals (n> 2) is also examined in this work.
Cassivi, Luc. "The impact of collaboration planning forecasting and replenishment, CPFR, on the performance of firms in a supply chain." Châtenay-Malabry, Ecole centrale de Paris, 2003. http://www.theses.fr/2003ECAP0897.
Full textChauhan, Satyaveer Singh. "Chaînes d'approvisionnement : approches stratégique et tactique." Metz, 2003. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/2003/Chauhan_Satyaveer.Sing.SMZ0321.pdf.
Full textThis thesis is divided in three parts: The first part is devoted to the design of a supply chain at the strategic level. A systematic approach is proposed based on five macro-activities. Software has been developed to support this approach. It is presented in detail. In the second part of the thesis, solutions of O. R. Problems related to supply chains at the strategic level are proposed. In particular, models related to the selection of partners are developed. The last part of the thesis is dedicated to problems that are the most sensitive in a supply chain environment: real time scheduling, assembly problem when components are outsourced and definition of a sharing process in a specific example
Horta, Arduin Rachel. "De la gestion des déchets à l'approvisionnement de matières secondaires : développement d'indicateurs pour la gestion des DEEE - focus sur la filière française." Thesis, Paris, ENSAM, 2019. http://www.theses.fr/2019ENAM0064.
Full textWaste Electrical and Electronic Equipment (WEEE) is among the key urban mining stream due to its composition and rising volume. Currently, in the European Union, WEEE chain performance is mainly assessed by technical indicators that aim to ensure system compliance with collection and recovery targets set by the WEEE Directive. The WEEE Directive and French regulation target higher collection and treatment rates in the coming years. Therefore, to ensure an increase in quantity and quality of e-waste collected, reused and recycled, it is necessary to improve our knowledge and control of the WEEE flows. The goal of this thesis is to establish a robust set of indicators covering multidimensional aspects related to the collection and treatment of WEEE. These indicators intend to improve the visibility on the progress of the WEEE official schemes in a circular economy. Different technical, environmental, economic and criticality priorities related to the recovery of raw materials from e-waste are assessed. The indicators are presented and validated with a case study focused on waste screens, considering data and particularities of the e-waste chain in France. The multidimensional approach presented in this study can support future policies and best practices in WEEE management in order to improve e-waste tracking and the recovery of (critical) raw materials. In so doing, more targeted WEEE management activities have the potential to extend the scope from waste and hazardous substances management to enhancing the supply of quality secondary raw materials
Rachi, Amine. "L'impact de la relation client-fournisseur sur l'innovation du fournisseur." Nantes, 2013. http://www.theses.fr/2013NANT4024.
Full textRahimi, Ali. "Selection of Wood Supply Contracts to Reduce Cost in the Presence of Risks in Procurement Planning." Doctoral thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/66765.
Full textProcurement activities in the pulp and paper industry account for an important part of the overall supply chain cost. Procurement decision-makers plan for the required wood supply up to one year in advance to guarantee the supply volume for the continuous production process at their mill. Regular, flexible and option contracts with suppliers in different groups are available. Suppliers are grouped based on common characteristics such as forestland ownership. However, during the execution of the plan, sourcing risks affect procurement operations. If risks are not integrated into the procurement planning process, mitigating their impact is likely to be expensive and complicated. Additional expensive ad hoc contracts might be required to compensate for the lack of deliveries. To tackle this problem, the first project of this thesis demonstrates the development of a deterministic mathematical model of procurement operations. The objective of the model is to propose an annual procurement plan to minimize the total cost of procurement operations. The operations are subject to constraints such as the minimum share of supply for each group of suppliers, inventory target levels, demand, woodyard capacity, and chipping process capacity. The decisions are related to the selection of sourcing contracts, woodyards opening, and wood supply flow. In the second project, an evaluation of the procurement plan from the deterministic model from project one is performed by using a Monte Carlo simulation approach. Three different strategies are compared as fixed, flexible, and a mix of both contracts. The simulation approach in this project evaluates the performance of the plan by the expected value and variability of the total cost when the plan is executed during the planning horizon. In the third project, a two-stage stochastic programming approach is used to provide a reliable procurement plan. The objective of the model is to minimize the expected cost of the procurement plan in the presence of different scenarios generated based on sourcing risks. First-stage decisions are the selection of contracts in the first period and the opening of woodyards. Second-stage decisions concern the selection of contracts starting after the first period, flow, inventory, and chipping process production. The case study used in this thesis was inspired by Domtar, which is a pulp and paper company located in Quebec, Canada. The results of three projects in this doctoral dissertation support decision-makers to reduce the human limitation in performing complicated procurement planning. The developed mathematical models provide a basis to evaluate the selected procurement strategy. This task is nearly impossible with current approaches in the company, as the evaluations require the formulation of v sourcing risks. The stochastic programming approach shows better financial results comparing to deterministic planning, with low variability in mitigating the impact of risks.
Pillet, Blandine. "La gestion concertée de l'eau en France : enseignements pour la gestion des communs : application à la gestion concertée de l'ouverture des sites hydroélectriques à l'approvisionnement en eau potable." Montpellier 1, 2000. http://www.theses.fr/2000MON10069.
Full textSavard, Mylène. "Planification stratégique d'un réseau logistique : Cas d'une entreprise forestière au Québec et de ses activités d'approvisionnement." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/28440/28440.pdf.
Full textDo, Thi Thanh Vinh. "L'approvisionnement en produits aquatiques des entreprises de transformation : application à la région sud-centrale du Vietnam." Nouvelle Calédonie, 2010. http://portail-documentaire.univ-nc.nc/files/public/bu/theses_unc/TheseDoThiThanhVinh2010.pdf.
Full textThe enabling environmental conditions and high labor availability represent the two key factors driving the robust fisheries and aquaculture development in the coastal South Central Vietnam. The double number of seafood export firms during the period of 2000-2007 in fact offers strong evidence for this trend. However, risks of depleted resources are increasingly imminent because, as with in other regions, a large amount of fishing and farming operations have been left unplanned and uncontrolled. Cognizant that producers in Vietnam are still behind the trend of integrating into their businesses the sustainable development practices adopted worldwide, the research is hoped to address three main components : - First, to estimate the total production of the fisheries and aquaculture as well as to evaluate the role of seafood firms in the consumption of fisheries products; to assess the growth prospect of market demands for fisheries products based on survey outcomes; and to provide the overall picture of material supply and demand for further assessing the balance of two scales in terms of both quantity and quality. - Second, to lend more credibility into the necessity of creating cooperation mechanisms. One of the emerging cooperation model is the establishment of partnerships among actors across the supply chain, including models adjusted to encourage balanced vertical integrations that mirror both upstream and downstream cooperations in the fisheries industry. Experiences from operations of fishing cooperatives in France and Japan will be thoroughly discussed. - Third, to analyze fundamental supply conditions for the seafood industry. From on-site observations about supply interruptions caused by the insufficiency of raw materials, the research will propose long-term solutions to address these major concerns
Dang, Xuan Linh. "Contribution à l'étude des systèmes PV/Stockage distribués : impact de leur intégration à un réseau fragile." Thesis, Cachan, Ecole normale supérieure, 2014. http://www.theses.fr/2014DENS0017/document.
Full textThis thesis presents the integration of the distributed energy sources (PV/Storage) connected to the electric power distribution network. The main question here is: "how to integrate and exploit these sources in order to strengthen a fragile distribution network?". To respond to this question, we started by modeling of the distribution network (domestic consumption model and low-voltage distribution network model) and a hybrid system (solar cell model, lead-acid battery model and converters models) while taking into account the losses. Concerning the PV/Storage system, a new approach of MPPT (Maximum Power Point Tracking) is developed based on the average current passing through the diode. We also studied the three-phase imbalance by using a three-phase inverter (also called three-phase corrector). An approach of the corrector sizing is proposed based on the indirect current of three current-loads. To study the power transfer between the distributed energy sources and the network, first of all, we proposed a new strategy to optimize the energy generated from the PV + chopper + ideal battery system into the electric network. An inverter is studied in order to transfer power (in terms of active and reactive power) between an active generator and the electric network. Secondly, optimization approaches for sizing and placing distributed generators in the electric network are presented. For a fixed sizing of the PV/Storage system (the area of photovoltaic, the capacity of battery and the nominal currents of converters) as well as Storage/Inverter system, the energy flow management strategies are carried out by respecting the constraints of the network as well as the state of charge of battery. We also considered the injection from the PV/Storage system into only one node as well as into two nodes simultaneously. Finally, the optimal sizing of the PV/Storage system as well as the Storage/Inverter system are studied based on the investment cost of each component of these systems. This approach takes into account the energy flow management strategies
Bazile, Didier. "La gestion des espèces ligneuses dans l'approvisionnement en énergie des populations : cas de la zone soudanienne du Mali." Toulouse 2, 1998. http://www.theses.fr/1998TOU20075.
Full textSocial sciences can contribute a great deal to better understanding the subtle relationship between mankind and its environment: "ethnoscience" has proven to be an invaluable tool when tackling issues related to ecology, forest sciences and agronomy in a tropical environment. In Mali, fuel supply depends on firewood to the rate of 91%; charcoal clearing usually occurs round about the main towns, which have been studied first. As population growths rapidly in the country, so does demand for fuel. Supplying towns with fuel depends on the evolution of farm systems and their productive capacity, which were worth analyzing. This research deals with the structure of society, the way the farmers act, where and how decisions are made. According to a scaling-up methodology and a systemic approach, data was gathered and processed in a suitable spatial framework. In addition, a range of indicators was set up to help model a regional land system typology. The main purpose was an attempt to understand how farmers have access to and manage fuel resources, as well as to explain the strategy of the farm units. A decision-making model with regard to "agrosystem" management has been proposed based on the data collected at the various working scales. This model is based on three major established facts. First, fuel-wood consumption increases as a function of availability of fuel resource, and according to the grade of dispersal of the large African family. As they form a valuable energy supply of 1,5 m3/ha/year, fallow fields should be used as a very short rotation copse inside the rotation system. In addition, the rural landscape known as "tree park" represents an unused stock of scattered fuel, and the traditional "tree park" scattered structure should be rationalized and converted into a linear system, more suitable for farming, cattle breeding and forest. Town fuel supply should be changed to a long-term, sustainable management process which should be administrated at the community, with a goal to trade any potential stock surplus for increased revenues
Poissonnier, Hugues. "Proposition d'un cadre d'analyse du contrôle inter-organsationnel fondé sur la chaîne de contrôle : une étude centrée sur la filière THD." Montpellier 2, 2005. http://www.theses.fr/2005MON20164.
Full textMaupas, Florent. "Analyse de l'impact économique de l'aléa éolien sur la gestion de l'équilibre d'un système électrique." Paris 11, 2008. http://www.theses.fr/2008PA111014.
Full textHumez, Vérane. "Proposition d'un outil d'aide à la décision pour la gestion des commandes en cas de pénurie : une approche par la performance." Phd thesis, Toulouse, INPT, 2008. http://oatao.univ-toulouse.fr/7818/1/humez.pdf.
Full textLénard, Jean-Dominique. "Approche multicritère de la gestion des approvisionnements. : Aide à la décision et pilotage global d'un ensemble d'articles." Paris 9, 1996. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=1996PA090040.
Full textVlad, Mariana. "Problématique de coopération entre fournisseurs et distributeurs de produits alimentaires dans le cadre de la mise en oeuvre de l'ECR." Nantes, 2005. http://www.theses.fr/2005NANT4006.
Full textThe present thesis concerns the cooperation between agents of the food logistic chain, within the framework of efficient consumer response (ECR) implementation. Producers and retailers often limit their partnership to the simple implementation of a set of tools, associating new logistic techniques and methods, as well as information and communication technology; the purpose was to understand the reasons conducing such choices, but neglecting the essence itself of ECR, based on active cooperation between suppliers and retailers. A qualitative study, complemented by a theoretical literature, has resulted in the proposition of an explanatory model of the level of cooperation, at both supply management and demand management perspectives. The proposed model conciliates the concepts of behavioural, economic and relational marketing approaches, as well as logistic and organisational aspects. The model validation has been accomplished by a structural equation model
Ihsane, Imane. "Prévision à court terme et gestion des consommations d'énergie électrique dans l'habitat." Thesis, Nantes, 2020. http://www.theses.fr/2020NANT4019.
Full textIn this thesis, a short-term forecasting model of electricity demand based on artificial neural networks was developed. First of all, particular care was taken in the selection of the relevant input variables of this model. Then it was used to reproduce the load curves at the scale of an individual housing and at scale of a region. The comparaison between these two levels of aggregation highlighted the limitations of the indicators for assessing the quality of the forecast. As a result, new indicators adapted to residential load profiles were created. In particular for error detection during peak periods. The thesis work also presents an approach to managing the demand for electrical loads. The particularity of this strategy lies in the consumer’s participation in reducing peak electricity consumption and in benefiting from advantageous off-peak electricity rates, which makes him an active consumer. Emphasis will also be placed on consumer comfort. The principle consists in establishing an allocation of priorities to electrical loads. Depending on these and on a setpoint power to be respected, the algorithm grants a satisfaction (or not) to the requests for activation of the loads. In the absence of sufficient usable power, unmet demand, in particular from heating systems, can impact the thermal comfort of the user. In order to remedy this problem, the management methodology has been improved by combining it with the short-term forecasting of load consumption. This forecast identifies the heaters whose activation will be interrupted in the future and anticipates their activation under power and priority constraints. The results obtained are promising and validate the effectiveness of the proposed methodologies
Hamdi, Faiza. "Optimisation et planification de l'approvisionnement en présence du risque de rupture des fournisseurs." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2017. http://www.theses.fr/2017EMAC0002/document.
Full textTrade liberalization, the development of mean of transport and the development economic of emerging countries which lead to globalization of supply chain is irreversible phenomen. They can reduce costs, in return, they multiply the risk of disruption from upstream stage to downstream stage. In this thesis, we focus on the inbound supply chain stage. We treat more specifically the case of a purchasing central to select suppliers and allocate the orders. Each of the suppliers cannot deliver its orders due to internal reasons (poor quality problems) or external reasons (natural disasters, transport problems). According to the selected suppliers deliver their orders or not, the transaction operation will generate a profit or loss. The objective of this thesis is to provide decision support tools to a decision maker faced with this problem by taking into account the behavior of decision maker toward risk. We proposed stochastic mixed integer linear programs to model this problem. In the first part, we focuses on the development of a decision support visual tool that allows a decision maker to find a compromise between maximizing the expected profit and minimize the risk of loss. In the second part, we integrated the techniques of estimation of risk VaR and CVaR in this problem. The objective is to help decision maker to minimize the expected cost and minimize the conditional value at risk simultanously via calculating of VaR. Result shows that the decision maker must tack into account the different scenarios of disruption regardless their probability of realisation
Sahu, 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
Conte, Moraga Guillermo, and Moraga Guillermo Conte. "Deployment by a Shipper of a Collaborative Approach with its Carriers." Master's thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/37077.
Full textUn défi important dans l'industrie forestière consiste à réduire les coûts de transport globaux entre les fournisseurs et les clients. L'industrie forestière déplace de grandes quantités de bois des zones de récolte vers les terminaux et les usines. Lorsque de nombreuses organisations sont impliquées, une collaboration entre les fournisseurs et une utilisation efficiente des allocations permettent de trouver de meilleures solutions. Les allocations sont généralement basées sur des flux directs entre les noeuds d'approvisionnement et de demande. Cependant, de meilleures solutions peuvent être trouvées lorsque des itinéraires de retour en charge sont utilisés. Ceux-ci sont difficiles à trouver lorsque plusieurs parties prenantes sont impliquées, mais l'ajout d'informations provenant de la production de la récolte peut supporter une meilleure collaboration entre les fournisseurs ainsi que la détermination de plans plus efficients. Le but de ce projet est d’élaborer un modèle capable de résoudre le problème de la livraison des multi-dépôts aux multi-clients, sur plusieurs périodes de temps, en minimisant les coûts de transport de différents types de bois. Proposer une nouvelle méthode pour le cas quand les clients seulement réceptionnent produits de fournisseurs fixés à l’avance. En outre, il analyse différentes méthodes de paiement des itinéraires de transport, afin de terminer un mécanisme qui incite les fournisseurs de transport à avoir recours au transport collaboratif. Nous décrivons les résultats obtenus avec une entreprise de pâtes et papiers au Québec, Canada.
One important challenge in the forestry industry is to reduce the overall transportation cost between suppliers and clients. The forestry industry moves large quantities of wood from harvest areas to terminals and mills. When many organizations are involved, a collaboration between the suppliers as well as an efficient use of allocations, achieve better solutions. Allocations are typically based on direct flows between supply and demand nodes. However, better solutions can be found when return trip routes are used. These are difficult to find when there are several stakeholders involved, but adding information from harvest production can establish better collaboration between suppliers as well as more efficient plans. The purpose of this project is to define a model that can resolve the delivery from multidepots to multi-customers, in a multi-period of time, minimizing the cost of transport for different types of timber. To propose a novel method for scenarios where the clients only receive products from pre-determined suppliers. Also, it analyzes different methods of transport payment for backhaul routes, in order to establish a mechanism that encourages the transport suppliers to use collaborative transport. We describe results obtained with a pulp and paper company in Quebec, Canada.
One important challenge in the forestry industry is to reduce the overall transportation cost between suppliers and clients. The forestry industry moves large quantities of wood from harvest areas to terminals and mills. When many organizations are involved, a collaboration between the suppliers as well as an efficient use of allocations, achieve better solutions. Allocations are typically based on direct flows between supply and demand nodes. However, better solutions can be found when return trip routes are used. These are difficult to find when there are several stakeholders involved, but adding information from harvest production can establish better collaboration between suppliers as well as more efficient plans. The purpose of this project is to define a model that can resolve the delivery from multidepots to multi-customers, in a multi-period of time, minimizing the cost of transport for different types of timber. To propose a novel method for scenarios where the clients only receive products from pre-determined suppliers. Also, it analyzes different methods of transport payment for backhaul routes, in order to establish a mechanism that encourages the transport suppliers to use collaborative transport. We describe results obtained with a pulp and paper company in Quebec, Canada.
Wong, Anthony. "Conceptualisation d'un cadre de référence pour la maîtrise de multirisques liés à la gestion de l'approvisionnement international en contexte de projet /." Trois-Rivières : Université du Québec à Trois-Rivières, 2004. http://www.uqtr.ca/biblio/notice/resume/18442240R.pdf.
Full textWong, Anthony. "Conceptualisation d'un cadre de référence pour la maîtrise de multirisques liés à la gestion de l'approvisionnement international en contexte de projet." Thèse, Université du Québec à Trois-Rivières, 2004. http://depot-e.uqtr.ca/1268/1/000120888.pdf.
Full textLaliberté, François. "La planification de l'approvisionnement en matière ligneuse en forêt publique québécoise : alignement des objectifs et capacités." Doctoral thesis, Université Laval, 2021. http://hdl.handle.net/20.500.11794/69512.
Full textPlanning for timber supply in Quebec's public forests represents a complex case of a divergent supply chain (Alayet and al., 2015). The customers of this chain can be numerous. They participate in planning by interacting with the Ministry of Forests, Wildlife and Parks (MFFP) which is the supplier of the plans. Customers also interact with each other to coordinate activities leading to the delivery of different products from a stand or tree to different factories. In general and more particularly in the context under study, alignment of objectives and capacities of stakeholders participating in planning is one of the main factors of success in the supply chain (Lee, 2004; Gunn, 2005; Simatupang and Sridharan, 2005; Fawcett and al., 2008; Cao and Zhang, 2013, Wong and al., 2012). Alignment represents the fit, in terms of objectives, structures and processes internally and between the different functions and stakeholders of a supply chain (Wong and al., 2012). In Quebec, potential timber supply and harvested timber show a historical inadequacy, with 30 % or more of the total annual allowable cut of the public forest not being harvested. In addition, the management strategies leading to the allowable cut calculations take little or no account of the economic aspects, which results in dissatisfaction of industrial customers with the value generated by the supply plans. Finally, planning stakeholders express dissatisfaction with the planning process and the value of plans (Gharbi, 2014). The first part of this research, which consists of a descriptive case study, aims to verify if there is a lack of alignment by studying the current planning process and its alignment mechanisms. The process is compared to a conceptual reference framework developed from theoretical concepts collected in the literature and from the main components of the Supply Chain Council's Supply Chain Organizational Reference model (SCOR). Surveys and interviews with forest planners helped to map, describe and interpret the process, and establish concordances and disagreements with the conceptual framework. Although several sub-processes are comprehensively defined by the MFFP, the study shows that the organization of the planning process is not clearly defined. Roles, responsibilities and tasks are broken down and executed in silos rather than fostering the integration of stakeholder capacities. The hierarchical breakdown of planning does not conform to scientific conventions, leading to inconsistencies between planning levels and difficulties in understanding and communicating among stakeholders. The production and supply objectives are not sufficiently clear and defined. Finally, the use of indicators and dashboards is not widespread, which does not facilitate collaboration, adaptation and adjustment. Thus, the feedback and performance measurement mechanisms are deficient. This research allowed us to verify that there is a lack of alignment and identify the main factors involved. The second part of this research aims to propose and test a strategic level planning process focused on the alignment of objectives and planning capacities for woody material supplies from the principles of the conceptual framework adopted. A project was carried out in action research mode. Planning stakeholders were invited to participate in the development of a Regional Timber Production Strategy (SRPB). They were offered a process that put forward principles for aligning objectives and capacities. This approach demonstrates that it is possible to increase stakeholder satisfaction with the planning process by promoting alignment of goals and capabilities, which answers the research question. Although the project (SRPB) only addresses the strategic level of planning woody material supplies in Quebec public forests, we believe that the results of this research, specifically the conceptual framework supporting the configuration of a process, are transferable at the tactical and operational planning scales as well as in other regional contexts in Quebec and elsewhere. We also believe that these findings may inspire approaches to configuring systems and planning processes in other areas where supply planning involves multiple stakeholders. This research project contributes to filling the gap noted in the literature concerning the field of alignment of objectives and capacities in the planning process of the woody material supply.
Villeminot, 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
Couroux, Bernard. "De la faculté d'adaptation d'un établissement public à son milieu : l'exemple d'EDF." Nice, 1991. http://www.theses.fr/1991NICE0001.
Full textRuiz, Bartolomé Angel. "Logistique de la distribution dans le secteur de la santé." Compiègne, 2002. http://www.theses.fr/2002COMP1407.
Full textNeuville, Jean-Philippe. "Le contrat de confiance : étude des mécanismes de coopération dans le partenariat industriel autour de deux grands constructeurs automobiles européens." Paris, Institut d'études politiques, 1996. http://www.theses.fr/1996IEPP0005.
Full textThe industrial partnership is one of the possible forms of the organized action between market and hierarchy. With the tools of the sociological analysis of organizations, an empirical comparison of two partnerships is carried out in the automobile manufacturing sector in europe. Results show that this form of industrial cooperation is characterized, first by a common framework : quality ; second; by a specific regulation mecanism : trust ; finally, by a structure of social exchange in which economic exchange is embedded in : interpersonal networks
Chiche, Alice. "Théorie et algorithmes pour la résolution de problèmes numériques de grande taille : application à la gestion de production d’électricité." Paris 6, 2012. http://www.theses.fr/2012PA066166.
Full textThis manuscript deals with large-scale optimization problems, and more specifically with solvingthe electricity unit commitment problem arising at EDF. First, we focused on the augmented Lagrangian algorithm. The behavior of that algorithm on an infeasible convex quadratic optimization problem is analyzed. It is shown that the algorithm finds a point that satisfies the shifted constraints with the smallest possible shift in the sense of theEuclidean norm and that it minimizes the objective on the corresponding shifted constrained set. The convergence to such a point is realized at a global linear rate, which depends explicitely on theaugmentation parameter. This suggests us a rule for determining the augmentation parameter tocontrol the speed of convergence of the shifted constraint norm to zero. This rule has the advantage ofgenerating bounded augmentation parameters even when the problem is infeasible. As a by-product,the algorithm computes the smallest translation in the Euclidean norm that makes the constraintsfeasible. Furthermore, this work provides solution methods for stochastic optimization industrial problemsdecomposed on a scenario tree, based on the progressive hedging algorithm introduced by[Rockafellar et Wets, 1991]. We also focus on the convergence of that algorithm. On the one hand,we offer a counter-example showing that the algorithm could diverge if its augmentation parameter is iteratively updated. On the other hand, we show how to recover the multipliers associated with thenon-dualized constraints defined on the scenario tree from those associated with the corresponding constraints of the scenario subproblems. Their convergence is also analyzed for convex problems. The practical interest of theses solutions techniques is corroborated by numerical experimentsperformed on the electric production management problem. We apply the progressive hedging algorithmto a realistic industrial problem. More precisely, we solve the French medium-term electricityplanning problem that consists in minimizing the expected electricity production cost, consideringphysical constraints like the boundaries of 155 production units and the dynamic evolution of nuclearstocks, and imposing the equilibrium between production and demand. We also illustrate themultiplier convergence result on the problem that consists in determining the marginal cost of thesupply-demand equilibrium in the medium-term electricity planning at Électricité de France
Auger, Maxime. "Bénéfices et exigences de l'optimisation mathématique pour la planification de l'allocation du bois aux usines de produits forestiers." Master's thesis, Université Laval, 2017. http://hdl.handle.net/20.500.11794/27865.
Full textSupply planning is a significant challenge for the forest industry, particularly in natural forests characterized by great heterogeneity. Such forests produce raw material suitable for different final products. Thus, developing plans to match supply with demand becomes a complex problem for forest planners. The automatization of the planning approach using an optimization tool allows many important factors to be taken into consideration during planning. In the literature, several theoretical models have been proposed, but it appears that very few of these are currently used by companies. It is assumed that the complexity of the problem, the ever changing nature of the planning environment, and the expertise required to use these models limit their application in industrial context. Nevertheless, the implementation of such tools could bring significant improvements in profits for the forest companies. The aims of the study are threefold : (i) to evaluate the potential for the implementation of mathematical optimization in companies, in particular by identifying the additional resources needed to adopt such an approach, (ii) to estimate the potential gains associated with utilization of optimization model in formulating wood procurement planning in an industrial case, and (iii) to analyze the effect of variation in the information used could have on the plans. An optimization software (LogiLab) developed by the FORAC research consortium was used. The tool allows to maximize the profit generated on the entire supply chain through optimal allocation of raw materials to mills in the network. The model simultaneously considers both harvesting and transportation cost, the heterogeneity of the forest and mill performances. The planning done now in companies visually focuses on lower transportation distance. We adapted LogiLab to a case study involving a Canadian forest products company, to analyze the generated profits, and assess its potential for implementation. To realize the second objective, we studied the planning method of our Partner Company and compared it to the optimization approach that we used for generating the optimal plan. Finally, we adjusted the baseline inventory data using actual data from the measurement to test the effect of the variability of the information used in developing the plans. A higher net profit was generated when using our planning approach in comparison to the plan prepared by the company. This difference is due, in part, to a more efficient allocation of raw materials to the mills. With regards to the second objective, we found several advantages such as a reduction in the time needed to produce a plan. Moreover, even if the cost of implementation is high they are recovered in less than two years by savings in planning time. The gains generated following the optimized plans exceed by several orders of magnitude the initial costs of the system to be set up.
Gautam, Shuva Hari. "Exploring wood procurement system agility to improve the forest products industry’s competitiveness." Doctoral thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/26319.
Full textThe significant downfall experienced by the Canadian forest products industry in the past decade has catalyzed the industry into a process of transformation. A concerted effort to maximize economic value from forest resources through innovation in both products and processes is currently underway. This thesis focuses on process innovation of wood procurement systems (WPS). WPS includes upstream processes and actors in the forest products supply chain, responsible for procuring and delivering raw materials from forests to manufacturing mills. The competitiveness of the industry depends on the agility of WPS to deliver the right product to the right customer at the right time. The specific aims of the thesis are to identify opportunities to improve wood procurement system agility, quantify the potential improvement in performance and propose a mechanism to anticipate its long-term impact. Agility is the ability to respond promptly and effectively to unexpected short-term fluctuation in demand. We first identify the capabilities a WPS needs to possess in order to enable agility; we then review the literature in the WPS domain to search for evidence of these capabilities. An opportunity to improve agility of WPS was then identified. It entailed providing managers with flexibility in the choice of silvicultural treatments at the operational level to permit better alignment of supply with the prevailing demand. An experiment was conducted using industry data to quantify the potential benefits associated with the approach. In scenarios where flexibility was permitted, significantly higher profits and demand fulfillment rates were observed. Next, a simulation-optimization system for hierarchical forest management planning was developed to examine the influence of operational level silvicultural flexibility on long-term wood supply. The system was implemented to a forest management unit in Québec in a rolling planning horizon basis for a 100 year horizon. The system demonstrated a capability to measure short and long-term impacts of supply decisions. It will prove to be a useful tool to better integrate forest management practices and supply chain needs.
Firoozi, Mehdi. "Optimisation Multi-échelon du stock avec incertitude sur l'approvisionnement et la demande." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0289/document.
Full textSupply Chain Management (SCM) is an important part of most companies and applying the appropriate strategy is essential for managers in competitive industries and markets. In this context, Inventory Management plays a crucial role. Different inventory systems are widely used in practice. However, it is fundamentally difficult to optimize, especially in multi-echelon networks. A key challenge in managing inventory is dealing with uncertainties in supply and demand. The simultaneous decrease of customer service and increase of inventory-related costs are the most significant effects of such uncertainties. To deal with this pattern, supply chain managers need to establish more effective and more flexible sourcing and distribution strategies. In this thesis, a “framework to optimize inventory decisions in multi-echelon distribution networks under supply and demand uncertainty” is proposed. In the first part of the research work, multi-echelon distribution systems, subject to demand uncertainty, are studied. Such distribution systems are one of the most challenging inventory network topologies to analyze. The optimal inventory and sourcing policies for these systems are not yet unknown. We consider a basic type of distribution network with a single family product through a periodic review setting. Based on this property, a two-stage mixed integer programming approach is proposed to find the optimal inventory-related decisions considering the non-stationary demand pattern. The model, which is based on a Distribution Requirements Planning (DRP) approach, minimizes the expected total cost composed of the fixed allocation, inventory holding, procurement, transportation, and back-ordering costs. Alternative inventory optimization models, including the lateral transshipment strategy and multiple sourcing, are thus built, and the corresponding stochastic programs are solved using the sample average approximation method. Several problem instances are generated to validate the applicability of the model and to evaluate the benefit of lateral transshipments and multiple sourcing in reducing the expected total costs of the distribution network. An empirical investigation is also conducted to validate the numerical findings by using the case of a major French retailer’s distribution network. The second part of the research work is focused on the structure of the optimal inventory policy which is investigated under supply disruptions. A two-stage stochastic model is proposed to solve a capacitated multi-echelon inventory optimization problem considering a stochastic demand as well as uncertain throughput capacity and possible inventory losses, due to disruptions. The model minimizes the total cost, composed of fixed allocation cost, inventory holding, transportation and backordering costs by optimizing inventory policy and flow decisions. The inventory is controlled according to a reorder point order-up-to-level (s, S) policy. In order to deal with the uncertainties, several scenario samples are generated by Monte Carlo method. Corresponding sample average approximations programs are solved to obtain the adequate response policy to the inventory system under disruptions. In addition, extensive numerical experiments are conducted. The results enable insights to be gained into the impact of disruptions on the network total cost and service level. In both parts of the research, insights are offered which could be valuable for practitioners. Further research possibilities are also provided
Ouhimmou, Mustapha. "An Integrated Planning Model for Multi-Supplier, Multi-Facility, Multi-Customer, Multi-Product and Multi-Period: Application to the Wood Furniture Industry." Thesis, Université Laval, 2009. http://www.theses.ulaval.ca/2009/26513/26513.pdf.
Full textAgi, Maher. "Analyse du développement d’une chaîne logistique par l’échange de données informatisé [EDI] : le cas d’un constructeur automobile." Paris, ENMP, 2005. http://www.theses.fr/2005ENMP1308.
Full textEDI is one of the most important tools in Supply Chain construction. Using data from a case study in the automotive industry, this work intended to analyse the conditions of EDI diffusion between a car manufacturer and his suppliers. Our case study helped us to develop and test a tool that uses uncertainty paradigm to analyse the importance of EDI connections for the car manufacturer. Also, our survey of suppliers shows that, despite standardization efforts and lower costs due to Internet, their integration to the manufacturer’s supply chain is still problematic. Findings from our study show that the most influent factors on suppliers’ decision regarding EDI adoption with the car manufacturer are the volume of exchanges and the existence of commercial prospects. Our analysis of supply chain integration strategies that car manufacturers could apply indicates that these latters could concentrate their purchase orders on some selected suppliers who would accept to establish EDI connections
Humez, Vérane Dupont Lionel Lauras Matthieu. "Proposition d'un outil d'aide à la décision pour la gestion des commandes en cas de pénurie une approche par la performance /." Toulouse : INP Toulouse, 2009. http://ethesis.inp-toulouse.fr/archive/00000839.
Full textGharbi, Chourouk. "Étude du processus de planification des approvisionnements forestiers au Québec et mesure de sa performance." Master's thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25525.
Full textLenoir, Arnaud. "Modèles et algorithmes pour la planification de production à moyen terme en environnement incertain : application de méthodes de décomposition proximales : Arnaud Lenoir." Clermont-Ferrand 2, 2008. http://www.theses.fr/2008CLF21875.
Full textDubois, Philippe. "Exploitation des matières premières lithiques dans des industries du paléolithique moyen en Languedoc oriental." Montpellier 3, 2003. http://www.theses.fr/2003MON30024.
Full textHuerre, Thomas. "Prix de marché et contrats de long terme : L’exemple du gaz." Paris 9, 2007. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=2007PA090062.
Full textThis thesis is interested in the natural gas price definition in Europe following the process of liberalisation: can it be defined via a market price and therefore be disconnected from the traditional model of long term contracts? Our work shows that the unique use of a market price is not feasible. The characteristics of the sector set to continue using long term contracts to ensure long term security of supply. However, spot markets are fundamentals for the short term security of supply and for giving a price signal reflecting gas to gas competition. But for this to be true, it is recommended to remove the flexibility clauses from these long term contracts. Those contracts also need to be more indexed on spot prices. An illustration is given. At last, the use of Forward prices is questioned. Such a market would enable competition development and security of supply
Thivierge-Robitaille, Etienne. "L'amélioration de la prévisibilité des approvisionnements forestiers." Master's thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/34602.
Full textIn recent years, the lack of wood supply predictability has been identified as a factor hindering the competitiveness of the forest sector. While several entities believe that the change in Quebec's forest regime in 2013 is one of the factors that led to this, it seems that the growing presence of a supplier-client relationship in wood procurement is also partially responsible. The problem of the lack of predictability is composed of two elements. First, no recognized definition of wood supply predictability has been proposed by the scientific community. Second, in practice, stakeholders do not seem to share a common understanding of what is wood supply predictability. In the absence of knowledge of the real causes of lack of predictability, it is difficult to come up with recommendations. To date, no study have addressed the issue of the lack of predictability of forest supplies. This work aims to fill this gap. A series of 20 interviews involving stakeholders of the forest supply chain was conducted. In addition, a case study of a Quebec pulp and paper mill examined wood supply predictability as part of procurement practices at the operational level. An evaluation methodology based on the data collection process in place, the contract allocation policy and the buyer forecasting methods have been applied. Based on our results, we define wood supply predictability as the ability to anticipate wood supply over time, within a certain degree of precision. 37 causes and 17 sources of the lack of wood supply predictability were identified through the interviews and the case study. These elements have been grouped into five categories. Finally, five causes specific to the management of suppliers and the monitoring of contractual agreements form the basis of recommendations aimed at improving predictability in the context of wood procurement. Four of the proposed recommendations favor contract allocation based on past performance of suppliers. A recommendation regarding quality monitoring of forecasts is also proposed.
Pech-Gourg, Nicolas. "Méthodes d'optimisation appliquées à l'industrie du liège." Angers, 2002. http://www.theses.fr/2002ANGE0044.
Full textJandrzejewski, Bouriga Mathilde. "Estimation de matrices de covariance : application à la gestion de risques Marché et financiers d'EDF." Paris 9, 2012. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=2012PA090010.
Full textLegault-Michaud, Ariane. "Optimisation du processus d'approvisionnement des clients américains chez Groupe Leclerc." Master's thesis, Université Laval, 2017. http://hdl.handle.net/20.500.11794/36678.
Full textCosta, Luís Miguel. "Gestion de cellules des systèmes électriques intégrant des sources de production stochastiques." Paris, ENMP, 2008. http://www.theses.fr/2008ENMP1631.
Full textEnergy supply and climate change are nowadays two of the most outstanding problems which societies have to cope with under a context of increasing energy needs. Public awareness of these problems is driving political willingness to take actions for tackling them in a swift and efficient manner. Such actions mainly focus in increasing energy efficiency, in decreasing dependence on fossil fuels, and in reducing greenhouse gas emissions. In this context, power systems are undergoing important changes in the way they are planned and managed. On the one hand, vertically integrated structures are being replaced by market structures in which power systems are unbundled. On the other, power systems that once relied on large power generation facilities are witnessing the end of these facilities' life-cycle and, consequently, their decommissioning. The role of distributed energy resources such as wind and solar power generators is becoming increasingly important in this context. However, the large-scale integration of such type of generation presents many challenges due, for instance, to the uncertainty associated to the variability of their production. Nevertheless, advanced forecasting tools may be combined with more controllable elements such as energy storage devices, gas turbines, and controllable loads to form systems that aim to reduce the impacts that may be caused by these uncertainties. This thesis addresses the management under market conditions of these types of systems that act like independent societies and which are herewith named power system cells. From the available literature, a unified view of power system scheduling problems is also proposed as a first step for managing sets of power system cells in a multi-cell management framework. Then, methodologies for performing the optimal day-ahead scheduling of single power system cells are proposed, discussed and evaluated under both a deterministic and a stochastic framework that directly integrates the uncertainty information into the scheduling process. Results show that the utilization of the proposed approaches may lead to important advantages for operators managing these types of power system cells