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Статті в журналах з теми "Systèmes à composants multiples":
Aoudji, Augustin Kossi N., Anselme Adegbidi, Jean Cossi Ganglo, and Philippe Lebailly. "Plantations de teck, Tectona grandis L.f., en sylviculture paysanne au Sud Bénin." BOIS & FORETS DES TROPIQUES 319, no. 319 (January 1, 2014): 7. http://dx.doi.org/10.19182/bft2014.319.a20554.
Beauregard, Stéphanie. "La place des droits subjectifs dans l’histoire de la philosophie du droit." Revue générale de droit 24, no. 4 (February 27, 2019): 593–603. http://dx.doi.org/10.7202/1056821ar.
Hughes, Thomas P. "L'histoire comme systèmes en évolution." Annales. Histoire, Sciences Sociales 53, no. 4-5 (October 1998): 839–57. http://dx.doi.org/10.3406/ahess.1998.279702.
Alia, Mourad, Alexandre Lefebvre, and Christine Collet. "Systèmes d'intégration des données. Une approche à composants." L'objet 10, no. 2-3 (September 30, 2004): 117–30. http://dx.doi.org/10.3166/objet.10.2-3.117-130.
-ESTÈVE, Daniel. "Les microcapteurs, composants-clés de l'intégration des systèmes." Revue de l'Electricité et de l'Electronique -, no. 01 (2001): 32. http://dx.doi.org/10.3845/ree.2001.001.
Hadj Arab, Amar, Mohamed Benghanem, and Akila Gharbi. "Dimensionnement de Systèmes de Pompage Photovoltaïque." Journal of Renewable Energies 8, no. 1 (June 30, 2005): 19–26. http://dx.doi.org/10.54966/jreen.v8i1.846.
Duong, Phuong-Quynh. "Tolérance aux fautes adaptable pour les systèmes à composants." Techniques et sciences informatiques 23, no. 2 (February 1, 2004): 205–30. http://dx.doi.org/10.3166/tsi.23.205-230.
Dolgui, Alexandre, Marie-Claude Portmann, and Jean-Marie Proth. "Planification de systèmes d'assemblage avec approvisionnements aléatoires en composants." Journal of Decision Systems 4, no. 4 (January 1995): 255–78. http://dx.doi.org/10.1080/12460125.1995.10511659.
Renaux, Emmanuel, Olivier Caron, and Jean-Marc Geib. "Chaîne de production de systèmes à base de composants logiques." L'objet 10, no. 2-3 (September 30, 2004): 147–60. http://dx.doi.org/10.3166/objet.10.2-3.147-160.
Chang, Hervé, and Philippe Collet. "Négociation de contrats, des systèmes multi-agents aux composants logiciels." L'objet 12, no. 4 (December 30, 2006): 73–102. http://dx.doi.org/10.3166/objet.12.4.73-102.
Дисертації з теми "Systèmes à composants multiples":
Vu, Hai Canh. "Stratégies de regroupement pour la maintenance des systèmes à composants multiples avec structure complexe." Thesis, Troyes, 2015. http://www.theses.fr/2015TROY0008/document.
In the recent decades, with a strong development of the global economy and new technologies, the structure of industrial systems is more and more complex. It can be a combination of elementary structures such as series structures, parallel structures, series-parallel structures, etc. In the literature, the most work focused on developing grouping strategies by considering series structures. This assumption is sometimes much penalized and limited the application of these strategies in reality. Therefore, the main objective of this thesis is to develop dynamic and stationary grouping strategies for the maintenance of multi-component systems with complex structure. These strategies have been developed for age-based models with non-negligible maintenance durations. In addition, dynamic conditions (dynamic context) such as maintenance opportunities, changes of the structure, etc., are considered and integrated into the maintenance scheduling.Our studies show the necessity and the difficulties of taking into account of the complex structure in the maintenance decisions. Numerical examples confirm the advantages of our maintenance strategies by comparing with other existing strategies in the literature
Chefrour, Djalel. "Plate-forme de composants logiciels pour la coordination des adaptations multiples en environnement dynamique." Phd thesis, Université Rennes 1, 2005. http://tel.archives-ouvertes.fr/tel-00011148.
pour l'adaptation de composants logiciels et pour leur coordination en environnement
dynamique.
Nous proposons une capture des mécanismes de l'adaptabilité dans un modèle de
composants générique basé sur la réflexivité et les techniques objet. Ces composants
reposent sur un service de surveillance de l'environnement et sur un intergiciel de coordination
des adaptations. La coordination inclut la gestion des dépendances entre les
composants interagissants et/ou concurrents.
En instaurant la séparation des préoccupations, notre approche facilite la tâche du
développeur à qui nous offrons des langages déclaratifs pour spécifier les politiques qui
contrôlent les adaptations des composants et leur coordination dans des scripts séparés.
Nous avons montré l'utilité de notre modèle, appelé Aceel, en l'utilisant pour développer
une application vidéo et un navigateurWeb adaptables en environnement mobile.
Li, Zhi. "Commande optimale (en Production et Stock) de Systèmes Assemble-To-Order (ATO) avec prise en compte de demandes en composants individuels." Phd thesis, Ecole Centrale de Lille, 2013. http://tel.archives-ouvertes.fr/tel-00866378.
Lapertot, Arnaud. "Méthodologie d'optimisation de composants et de systèmes énergétiques complexes : application au secteur résidentiel." Thesis, Aix-Marseille, 2021. http://www.theses.fr/2021AIXM0624.
This thesis is dedicated to the optimization of components and energy systems with an application in the residential sector. The methodology developed is composed of a sensitivity analysis, a multi-objective optimization and a multi-criteria decision-making aid to select the best compromise.First of all, an optimization of a domestic hot water production system is implemented numerically and is based on an experimental set-up in the IUSTI laboratory. The aim of this study is to optimize the performance of a heat pump-based system by improving its regulation according to different drawing profiles. Then, the procedure is applied to the parametric optimization of an earth-air heat exchanger (EAHE). The system uses geothermal resources to preheat or cool the air in a building by ventilation. The model of the earth-air heat exchanger has been experimentally validated with an existing geothermal platform at Strasbourg. A system that combines an EAHE, a double flow ventilation and a heat pump is also studied. Optimal sizing makes it possible to obtain a system that is profitable, autonomous and efficient for the different climates considered. Finally, the process is applied to the topological optimization of heat exchangers. The procedure identifies the set of topologies that has a good compromise between pressure drops and heat transfer. The decision aid methodology selects the final topology that allows to have an optimized distribution of solid elements in order to obtain the best compromise between these objectives
Dinh, Duc-Hanh. "Opportunistic Predictive Maintenance for Multi-Component Systems with Multiple Dependences." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0171.
Recently, maintenance modeling for multi-component systems with dependences (economic, stochastic, and/or structural dependences) has been extensively studied. However, most of the existing studies only consider one type of dependence since combining more than one makes the models too complicated to analyze and solve. However, in practice, several types of dependences, especially, the economic and structural dependences, may exist together in the system. To face this issue, the main objective of this thesis is to consider both economic and structural dependences in maintenance modeling and optimization for multi-component systems in framework of predictive maintenance. For this purpose, the impacts of economic and structural dependences on the maintenance cost, duration and the degradation process of the components are firstly investigated. Mathematical models for quantifying the impacts of the economic and structural dependences are then developed. Finally, a multi-level opportunistic maintenance policy is proposed to consider the impacts of these dependences between components.Due to the structural dependence between components, when a maintenance (preventive or corrective action) occurs, only few components need to be disassembled. The disassembled components are subjected to both economic and structural dependences while the non-disassembled components are subjected to only economic dependence. In that way, the proposed maintenance policy is characterized by one preventive threshold, that is used to select survival components for preventive maintenance, and two opportunistic maintenance thresholds, that are used for opportunistic maintenance. When a maintenance occurs, the first opportunistic threshold is defined to select the non-disassembled components (with only economic dependence) while the second opportunistic threshold is then developed to consider the disassembled components for opportunistic maintenance (with both economic and structural dependences). To evaluate the performance of the proposed opportunistic maintenance policy, a cost model is developed. Particle swarm optimization algorithm is then implemented to find the optimal decision variables. Finally, the proposed opportunistic maintenance policy is illustrated through a conveyor system to show its feasibility and added value in maintenance optimization framework
Quitin, François. "Channel modeling for polarized MIMO systems." Doctoral thesis, Universite Libre de Bruxelles, 2011. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209951.
The PIPO model is a statistical channel model for tri-polarized to tri-polarized communication systems. A tri-polarized antenna system is a tranceiver using three perpendicular antennas. The aim of the PIPO channel model is to have a model that has a simple mathematical structure, so it can be used for solving precoding equations or capacity calculations. Although the PIPO model has a very simple structure, it takes the following parameters into account: coherent channel component, cross-polar channel power imbalance, inter-channel correlation, short- and long-scale time variance.
Experimental measurements are used to parameterize the model. It is shown how the model parameters are extracted from experimental measurements, and the results are analyzed to allow further simplification of the model.
The PDD model, on the other hand, is a geometry-based stochastic channel model. It models the channel as a sum of clusters, where each cluster consists of groups of multipath components (MPCs). The PDD model includes two novelties that will be developed in detail in this thesis.
- The model considers polarization on a per-cluster basis. This permits to have a more accurate description of the polar-angular spectrum.
- The diffuse multipath component (DMC) is included by considering a diffuse component for each cluster. The diffuse cluster component is then modeled as the sum of a set of diffuse MPCs.
The model is specified in detail, and it is shown how the model can be generated.
Experimental measurements were carried out to parameterize the model. A new extraction technique for extracting the specular-diffuse clusters from the measurements is proposed. This technique is based on joint clustering of the specular MPCs and the bins of the diffuse component. The experimental results are analyzed, and superimposed with environment information to gain further insight into the physical aspects of clustered propagation.
Finally, both models are validated. Several validation metrics are introduced, and their pertinence in the context of polarized MIMO systems is highlighted. Both models are successfully validated, and the advantages and limitations of each models are investigated.
Cette thèse traite des modèles de canal pour systèmes sans-fils multi-antennes polarisés. Des systèmes multi-antennes polarisés sont des systèmes qui utilisent des antennes polarisées perpendiculairement co-localisées à la station de base et au terminal mobile, dans le but de bénéficier de la diversité de polarisation. De tels systèmes peuvent bénéficier des avantages des systèmes MIMO tout en diminuant l'encombrement des équipements. Deux modèles seront présentés dans cette thèse. Le premier est le modèle Polarized-Input Polarized-Output (PIPO), le second est le modèle Polarized-Diffuse-Directional (PDD).
Le modèle PIPO est un modèle statistique pour des systèmes de communication tri-polaire à tri-polaire. Un système tri-polaire est un émetteur ou un récepteur qui utilise trois antennes perpendiculaires. Le but du modèle de canal PIPO est d'avoir un modèle qui a une structure mathématique simple, afin qu'il puisse être utilisé pour résoudre des équations de précodage ou des calculs de capacité. Malgré la structure simple du modèle PIPO, il tient compte des paramètres suivants: la composante cohérente du canal, les différences de puissance entre canaux cross-polaires, la corrélation entre canaux, les variations à courte et à longue échelle de temps. Des mesures expérimentales ont été réalisées afin de paramétriser le modèle. Les techniques pour extraire les paramètres du modèle des mesures expérimentales sont présentées, et les résultats sont analysés afin de permettre une simplification supplémentaire du modèle.
Le modèle PDD, quant à lui, est un modèle de canal stochasique-géométrique. Il modélise le canal comme une somme de clusters, où chaque clusters est composé d'un groupe de chemins multi-trajets. Le modèle PDD inclut les deux nouveautés suivantes qui seront développées en détail dans cette thèse.
- Le modèle considère une polarisation par cluster. Ceci permet d'avoir une description plus exacte du spectre angulaire-polaire.
- La composante diffuse est prise en compte en incluant une composante diffuse pour chaque cluster. La composante diffuse d'un cluster est alors modelisée comme une somme de multi-trajets diffus.
Le modèle est spécifié en détail, et il est présenté comment le modèle peut être généré. Des mesures expérimentales ont été faites afin de paramétriser le modèle. Une nouvelle technique d'extraction est proposée pour extraire les clusters spéculaires-diffus. Cette technique est basée sur le clustering conjoint des multi-trajets spéculaires et des "bins" de la composante diffuse. Les résultats expérimentaux sont analysés, et superposés avec l'information de l'environnement de mesure afin d'avoir une connaissance accrue des aspects physiques de la propagation par clusters.
Finalement, les deux modèles sont validés. Plusieurs métriques de validations sont introduites, et leur pertinence dans le cadre des systèmes MIMO polarisés est mis en avant. Les deux modèles sont validés avec succès, et les avantages et limitations de chaque modèle sont investigués.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished
Tsormpatzoglou, Andreas. "Caractérisation et modélisation des composants MOS à multiples grilles nanométriques." Grenoble INPG, 2009. http://www.theses.fr/2009INPG0143.
The subject of the PhD is focused on theoretical and experimental studies ofnanoscale multi-gate Metal Oxide Semiconductor Field Effect Transistors. The theoretical part is orientated towards the derivation of analytical expressions for the potential distribution within the channel of the transistors, from which characteristic parameters ofthe transistors are derived. The final aim of the work is to obtain analytical compact expressions for the drain current, valid in aH regions of operation. First, symmetrical Double-Gate MOSFETs are studied, whereas the study of all other types of multi-gate MOSFETs (triple-gate and gate-all-around) is based on the derived model of DG MOSFETs. For the experimental part, the transfer characteristics of single-FinFETs and 5-FinFETs were measured at room temperature. For analysis of the experimental data, numerical simulations were performed to verify the theoretical speculations and optimize the device performance
Belhadj, Taher Aymen. "Etude théorique et expérimentale de composants innovants à fibres optiques multiples." Thesis, Limoges, 2016. http://www.theses.fr/2016LIMO0036/document.
These research works presented in this manuscript aim at designing, simulate, manufacture and characterizing the modal converter based microstructured air-silica cane. This function represents a key element for modal multiplexers and chromatic dispersion compensators. The proposed component is based on a tapered microstructured air-silica cane « taper » which constitutes a transition between the two different fibers. The conversion is done through the excitation of a particular mode in a multimode or few mode fibers from a standard fiber. In the tapered structures, the understanding of the different theories involving the coupling between the different modes was yet necessary. A thorough study is carried to analyze the phenomenon of coupling and study the adiabatic criterion. This component is developed around an existing manufacturing technology at XLIM which based in the technique « stack and draw». Finally, we validate numerically and experimentally that principle. We succeed to excite the fundamental mode and higher order modes in a multimode fiber
Nguyen, Van-Thai. "AI-based maintenance planning for multi-component systems considering different kinds of dependencies." Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0070.
Maintenance planning for systems consisting of multiple components has still been a challenging problem. Particularly, mathematically describing dependencies between components is usually a complicated task, however, omitting component dependencies in maintenance modeling might result in suboptimal plans. Moreover, the number of maintenance decision variables needed to be optimized increases rapidly in the number of components, causing computational expense for optimization algorithms.To face these issues, this PhD aims to propose an artificial-intelligence-based maintenance optimization approach allowing to consider different kinds of dependencies between components (i.e., economic, stochastic, and structural dependence). Particularly, the maintenance approach integrates a deep maintenance cost model, that allows to compute maintenance costs at system level without requiring individual costs at component level (e.g., setup costs, labor costs and costs of maintaining each component), into the framework of multi-agent deep reinforcement learning, which can be applicable for large sequential decision-making problems, to optimize maintenance decisions. Moreover, a novel degradation interaction model for discrete- state components is also developed and then integrated into the proposed maintenance approach. Numerical studied are conducted on multi-component systems with different configurations under different observability scenarios to investigate the performance and the advantage as well as limits of the proposed maintenance approach
Salmi, Nabila. "Analyse de performances des systèmes basés composants." Chambéry, 2008. http://www.theses.fr/2008CHAMS029.
Software and hardware industry is being more and more oriented to component based design of systems. The aim of such design is to reduce development cost and time by reuse of components, and to achieve high degree of maintainability, extensibility and dynamics. Ensuring correctness and analysis of these component based systems (CBS) seems to be an important matter, even qualitative or quantitative analysis. In this optic, we develop, in this thesis, a new method allowing to perform a qualitative and quantitative analysis of a CBS. The main benefit of our method is to exploit the compositional architecture of such systems in order to reduce the complexity of analysis (computation time and memory savings), and to allow thus the analysis of important state spaces. This approach starts from the definition of the component architecture of a CBS, and models systematically and adequately this CBS in order to apply a structured method for performance analysis of. The global system. The components are modeled with a high level model, the Stochastic Well-formed Net, widely used for performance evaluation of complex systems partially or totaly symmetrical. Two main kinds of interaction between components are considered : communication by service invocation and event based communication. In order to reduce analysis complexity, the structured analysis of a CBS is based on a tensorial descrition of the generato of the underlying Markov chain. Case studies illustrate our approach
Книги з теми "Systèmes à composants multiples":
Poitevin, Jean-Marc. Electronique: Fonctions principales, systèmes intégrés. Paris: Dunod, 1995.
Moliton, André. Électronique et photo-électronique des matériaux et composants: Électronique des matériaux. Paris: Hermes Science publ., 2009.
Austria) International ITG Workshop on Smart Antennas (23rd 2019 Vienna. WSA 2019: 23rd International ITG Workshop on Smart Antennas. Berlin]: [VDE Verlag GmbH], 2019.
Germany) International ITG Workshop on Smart Antennas (20th 2016 Munich. WSA 2016: 20th International ITG Workshop on Smart Antennas, March 9-11, 2016, Munich, Germany. Berlin: VDE Verlag GmbH, 2016.
Ezio, Biglieri, ed. MIMO wireless communications. Cambridge: Cambridge University Press, 2007.
1968-, Tsoulos George V., ed. MIMO system technology for wireless communications. Boca Raton [Fla.]: Taylor & Francis, 2006.
Refrigeration, International Institute of, and International Institute of Refrigeration. Commission E2., eds. Systèmes et composants pour les pompes à chaleur de grande puissance: Compte rendu de la réunion de la Commission E2 (June 19-21, 1985). Paris: The Institute, 1985.
Radix, J. C. Systèmes inertiels à composants liés "strap-down". CEPADUES, 2000.
Kartikeyan, M. V., Leeladhar Malviya, and Rajib Kumar Panigrahi. MIMO Antennas for Wireless Communication: Theory and Design. Taylor & Francis Group, 2020.
Biglieri, Ezio, Arogyaswami Paulraj, Robert Calderbank, Anthony Constantinides, and Andrea Goldsmith. MIMO Wireless Communications. Cambridge University Press, 2009.
Частини книг з теми "Systèmes à composants multiples":
HYGOUNENC, Emmanuel. "Intégration, vérification et validation du système." In Ingénierie des systèmes, 297–307. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9108.ch17.
E. NAVAS, Renzo, Laurent TOUTAIN, and Georgios Z. PAPADOPOULOS. "Techniques de Moving Target Defense pour l’IoT." In La gestion et le contrôle intelligents des performances et de la sécurité dans l’IoT, 277–304. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9053.ch11.
JANAC, K. Charles. "NoC, la technologie de communication des MPSoC." In Systèmes multiprocesseurs sur puce 1, 243–75. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9021.ch9.
LE PIERRÈS, Nolwenn. "Stockage de chaleur par procédés à absorption." In Stockage de la chaleur et du froid 2, 99–145. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9134.ch2.
BONJOUR, Jocelyn, and Rémi REVELLIN. "Analyses entropique et exergétique appliquées aux cycles inverses." In Systèmes frigorifiques, pompes à chaleur et machines à cycle inverse, 49–99. ISTE Group, 2020. http://dx.doi.org/10.51926/iste.9123.ch2.
GIRAUD, Florine, Romuald RULLIÈRE, and Jocelyn BONJOUR. "Verrous scientifiques et technologiques des machines à compression thermique." In Systèmes frigorifiques, pompes à chaleur et machines à cycle inverse, 131–83. ISTE Group, 2020. http://dx.doi.org/10.51926/iste.9123.ch4.
RIBEIRO, Tony, Maxime FOLSCHETTE, Laurent TRILLING, Nicolas GLADE, Katsumi INOUE, Morgan MAGNIN, and Olivier ROUX. "Les enjeux de l’inférence de modèles dynamiques à partir de séries temporelles." In Approches symboliques de la modélisation et de l’analyse des systèmes biologiques, 97–139. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9029.ch3.
LHOMME, Serge. "Analyser la vulnérabilité des réseaux et des infrastructures critiques." In Vulnérabilité, territoire, population, 145–61. ISTE Group, 2024. http://dx.doi.org/10.51926/iste.9106.ch7.
GLOAGUEN, Éric, Jérémie MELLETON, Blandine GOURCEROL, and Romain MILLOT. "Les minéralisations à lithium, contributions des paléoclimats et des orogènes." In Ressources métalliques 2, 1–60. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9136.ch1.
PHILIPPE, Tanguy. "Interculturalité, corps et sport." In "L'interculturel" dans l’enseignement supérieur, 227–40. Editions des archives contemporaines, 2022. http://dx.doi.org/10.17184/eac.5006.
Тези доповідей конференцій з теми "Systèmes à composants multiples":
Carenco, A. "Composants actifs." In Systèmes optiques. Les Ulis, France: EDP Sciences, 1992. http://dx.doi.org/10.1051/sfo/1992018.
Goure, J. P. "Composants à fibres optiques." In Systèmes optiques. Les Ulis, France: EDP Sciences, 1992. http://dx.doi.org/10.1051/sfo/1992011.
Звіти організацій з теми "Systèmes à composants multiples":
Haselbacher, Andreas, Michel Arnal, Maurizio Barbato, Alexander Fuchs, Jared Garrison, Turhan Demiray, Philipp Jenny, et al. Joint synthesis “Electricity storage via adiabatic air compression” of the NRP “Energy”. Swiss National Science Foundation (SNSF), January 2020. http://dx.doi.org/10.46446/publication_nrp70_nrp71.2020.3.en.
Haselbacher, Andreas, Michel Arnal, Maurizio Barbato, Alexander Fuchs, Jared Garrison, Turhan Demiray, Philipp Jenny, et al. Synthèse conjointe «Stockage d’électricité par compression adiabatique d’air» du PNR «Energie». Swiss National Science Foundation (SNSF), January 2020. http://dx.doi.org/10.46446/publication_pnr70_pnr71.2020.3.fr.