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Artykuły w czasopismach na temat "Systèmes complexes – Réseaux d'ordinateurs"
Jousseins, Carole, Jocelyn Fagon, Julien Belvèze i Gérard Servière. "Livestock Farm Networks, a system at the center of French farming development". Revue d’élevage et de médecine vétérinaire des pays tropicaux 68, nr 2-3 (25.03.2016): 107. http://dx.doi.org/10.19182/remvt.20596.
Pełny tekst źródłaVivien, Laurent, Delphine Marris-Morini, Eric Cassan, Carlos Alonso-Ramos, Charles Baudot, Frédéric Bœuf i Bertrand Szelag. "Circuits intégrés photoniques silicium". Photoniques, nr 93 (wrzesień 2018): 18–22. http://dx.doi.org/10.1051/photon/20189318.
Pełny tekst źródłaLansing, J. Stephen. "Complexité et anthropologie". Nouvelles perspectives en sciences sociales 4, nr 2 (11.05.2009): 47–52. http://dx.doi.org/10.7202/029891ar.
Pełny tekst źródłaBouchafa, Samia. "Décision cumulative pour la vision dynamique des systèmes". Revue Française de Photogrammétrie et de Télédétection, nr 202 (16.04.2014): 2–26. http://dx.doi.org/10.52638/rfpt.2013.48.
Pełny tekst źródłaVautier, Claude. "La faille et la brèche : réflexions sur un dépassement possible des controverses contemporaines en sociologie". Nouvelles perspectives en sciences sociales 9, nr 1 (27.03.2014): 289–317. http://dx.doi.org/10.7202/1024046ar.
Pełny tekst źródłaCouturier, Yves, Dominique Gagnon i Louise Belzile. "Les compétences procédurales requises à la coordination dédiée". Phronesis 1, nr 2 (2.05.2012): 15–23. http://dx.doi.org/10.7202/1009057ar.
Pełny tekst źródłaRenier, Janine. "Crises systémiques : Effondrement ? Ou méta-morphose vers la grande transition ?" Acta Europeana Systemica 8 (10.07.2020): 285–300. http://dx.doi.org/10.14428/aes.v8i1.56463.
Pełny tekst źródłaRozprawy doktorskie na temat "Systèmes complexes – Réseaux d'ordinateurs"
Kellert, Patrick. "Modélisation de systèmes complexes avec QNAP2". Clermont-Ferrand 2, 1987. http://www.theses.fr/1987CLF2D191.
Pełny tekst źródłaAubault, Olivier. "Visualisation interactive de scènes vastes et complexes à travers un réseau". Rennes 1, 2003. http://www.theses.fr/2003REN1A008.
Pełny tekst źródłaMoui, Audrey. "Un cadriciel pour une surveillance adaptative de réseaux et systèmes complexes". Toulouse 3, 2013. http://thesesups.ups-tlse.fr/2027/.
Pełny tekst źródłaThe objective of the work reported in this thesis is to propose a software framework able to support the automation of a monitoring activity adaptation. Such an adaptation results in a modification of the way to monitor. Consequently, it is required to define a control plane able to manage the set of the underlying monitoring mechanisms. With the concern to propose a solution both the most generic, modular and reusable as possible, we have identified three properties from which has been designed the architecture of the proposed framework : configurability is the ability to initiate and then to modify at runtime without disruption both the scope and the parameters that govern the behavior of the monitoring mechanisms (for example polling or event reporting), adaptability is the ability to dynamically modify the behavior of a complete monitoring activity, thus allowing the achievement of an adaptation, governability is the ability to detect an adaptation requirement and to trigger the enforcement of the monitoring activity adaptation. Each of these three layers of the framework has been designed, implemented, tested and evaluated. Our approach, its models and their formalization are independent of any technological environment
Maag, Stéphane. "Méthodes de détection des interactions de services appliquées aux systèmes de télécommunication complexes". Evry-Val d'Essonne, 2002. http://www.theses.fr/2002EVRY0011.
Pełny tekst źródłaNowadays, efforts on research and standardization allow the telecommunication systems, such as intelligent network, to offer an increasing number of complex services. Nevertheless, these services may create serious problems for telecommunication systems, named feature interactions. In this thesis, we propose a feature interaction detection method during the specification phase of the telecommunication systems. This method relates on the telecommunication systems analysis defined by extended finite state machines and allows to detect interactions between n-tuple of services. It also allows the reduction of the number of detected interaction by taking into account the presence of desirable interactions. We approach these problematics under theoretical and practical aspects by defining and applying algorithms and applying them to realistic case studies
Makhloufi, Rafik. "Vers une gestion adaptative des réseaux complexes : cas de la surveillance décentralisée de données agrégées". Troyes, 2012. http://www.theses.fr/2012TROY0006.
Pełny tekst źródłaAutonomous management infrastructures based on self-* functions currently offer a first degree of autonomy, but they are often based on non-adaptive approaches. Conversely, their target networks are dynamics in terms of, for example, size, mobility, services and usages. Thus, adapting self-management infrastructures to the supporting network operational behavior is essential in order to ensure their performance and minimize their cost. The work carried out in this thesis aims at de-signing an autonomous management infra-structure able to adapt itself to the operational context of the managed network. The management function we are interested in is the decentralized monitoring of aggregated information, which can be based on gossip, aggregation trees or situated view protocols. To achieve these objectives, we propose a de-centralized self-adaptive management frame-work, based on fuzzy inference and multiple criteria decision making. For this purpose, we surveyed the existing decentralized aggregation protocols, and then we benchmarked one typical protocol from each category. Based on the obtained results, the proposed approach continuously analyzes the network state in order to retrieve the properties of the current context, and then selects the best aggregation strategy to use accordingly. Thus, the selected strategy is the one that maximizes the performance of the aggregation and minimizes its cost. The multiple criteria validation of the pro-posed approach through simulation shows that this one provides a good performance with an acceptable cost
Oumina, Hanane Ez-Zahra. "La taxation des applications complexes dans le nouvel environnement de réseaux de télécommunications 3GPPP IP multimedia subsystem (IMS)". Electronic Thesis or Diss., Evry, Institut national des télécommunications, 2009. http://www.theses.fr/2009TELE0017.
Pełny tekst źródłaCharging of services is one of the most important activities of service delivery in telecommunications. It is the revenue generator engine for operators. The concept of charging has evolved with the evolution of networks, applications, media types and end-user behaviors. Telecommunications networks have converged to All-IP with the introduction of IP Multimedia Subsystem. Hence, the Quality of Service has become a core concern of operators. Applications have become richer, including many services, contents and media types in a single session. A variety of content could be used by end-user, voice, data, text, image, and video. New content could be created with the combination of two or more basic content types. The behavior of end users in front of telecommunications services has evolved from a basic communication tool to information and entertainment tool. Consequently, the Quality of Experience is standing in the first stage to scale the success of one application. In this new context, a clear and fair charging is one of the first parameters to consider in Quality of Experience building. In our work, we will address the complexity of charging of new generation of telecommunications services. First, we propose a modeling of these new complex multimedia applications. Then, we construct the Rating Function which is the main module of charging. This function will address accurately the question of fair charging in All-IP context
Oumina, Hanane Ez-Zahra. "La taxation des applications complexes dans le nouvel environnement de réseaux de télécommunications 3GPPP IP multimedia subsystem (IMS)". Thesis, Evry, Institut national des télécommunications, 2009. http://www.theses.fr/2009TELE0017.
Pełny tekst źródłaCharging of services is one of the most important activities of service delivery in telecommunications. It is the revenue generator engine for operators. The concept of charging has evolved with the evolution of networks, applications, media types and end-user behaviors. Telecommunications networks have converged to All-IP with the introduction of IP Multimedia Subsystem. Hence, the Quality of Service has become a core concern of operators. Applications have become richer, including many services, contents and media types in a single session. A variety of content could be used by end-user, voice, data, text, image, and video. New content could be created with the combination of two or more basic content types. The behavior of end users in front of telecommunications services has evolved from a basic communication tool to information and entertainment tool. Consequently, the Quality of Experience is standing in the first stage to scale the success of one application. In this new context, a clear and fair charging is one of the first parameters to consider in Quality of Experience building. In our work, we will address the complexity of charging of new generation of telecommunications services. First, we propose a modeling of these new complex multimedia applications. Then, we construct the Rating Function which is the main module of charging. This function will address accurately the question of fair charging in All-IP context
Nguyen, Le-Duy-Lai. "Contrôle distribué multi-couche des systèmes complexes avec contraintes de communication : application aux systèmes d'irrigation". Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT108/document.
Pełny tekst źródłaThis thesis presents control problems of irrigation network with communication constraints and a multi-layer approach to solve these problems in a distributed manner. Detailed discussions of each layer with analytical and simulation results are described throughout several chapters. They emphasize the potential interest of the multi-layer approach, more precisely its efficiency and reliability for supervision, multi-objective optimization and distributed cooperative control of complex water transport systems. Conventionally, the first layer to be considered is the hydraulic network composed of free-surface channels, hydraulic structures and mesh subnetwork of pressurized pipes. By coupling the Saint-Venant equations for describing the physics of free-surface fluid and the Lattice Boltzmann method for the fluid simulation, a discrete-time nonlinear model is obtained for channel reaches. The hydraulic structures are usually treated as internal boundaries of reaches and modeled by algebraic relationships between the flow and pressure variables. To enable the exchange of information among the control system’s components, a communication network is considered in the second layer. Solving challenging problems of heterogeneous devices and communication issues (e.g., network delay, packet loss, energy consumption) is investigated in this thesis by introducing a hybrid network architecture and a dynamic routing design based on Quality of Service (QoS) requirements of control applications. For network routing, a weighted composition of some standard metrics is proposed so that the routing protocol using the composite metric achieves convergence, loop-freeness and path-optimality properties. Through extensive simulation scenarios, different network performance criteria are evaluated. The comparison of simulation results can validate the interest of this composition approach for dynamic routing. Finally, the third layer introduces an optimal reactive control system developed for the regulatory control of large-scale irrigation network under a Distributed Cooperative Model Predictive Control (DCMPC) framework. This part discusses the implementation of different control strategies (e.g., centralized, decentralized, and distributed strategies) and how the cooperative communication among local MPC controllers can be included to improve the performance of the overall system. Managing divergent (or outdated) information exchange among controllers is considered in this thesis as a consensus problem and solved by an asynchronous consensus protocol. This approach based on the multi-agent system paradigm to distributed control requires each controller to agree with its neighbors on some data values needed during action computation. For simulations, a particular benchmark of an irrigation channel is considered. The comparison of simulation results validate the benefits of the distributed cooperative control approach over other control strategies
Benhani, El mehdi. "Sécurité des systèmes sur puce complexes hétérogènes". Thesis, Lyon, 2020. http://www.theses.fr/2020LYSES016.
Pełny tekst źródłaThe thesis studies the security of the ARM TrustZone technology in the context of complex heterogeneous SoCs. The thesis presents hardware attacks that affect elements of the SoCs architecture and it also presents countermeasure strategies
Boudermine, Antoine. "A dynamic attack graphs based approach for impact assessment of vulnerabilities in complex computer systems". Electronic Thesis or Diss., Institut polytechnique de Paris, 2022. http://www.theses.fr/2022IPPAT046.
Pełny tekst źródłaNowadays, computer networks are used in many fields and their breakdown can strongly impact our daily life. Assessing their security is a necessity to reduce the risk of compromise by an attacker. Nevertheless, the solutions proposed so far are rarely adapted to the high complexity of modern computer systems. They often rely on too much human work and the algorithms used don't scale well. Furthermore, the evolution of the system over time is rarely modeled and is therefore not considered in the evaluation of its security.In this thesis, we propose a new attack graph model built from a dynamic description of the system. We have shown through our experimentations that our model allows to identify more attack paths than a static attack graph model. We then proposed an attack simulation algorithm to approximate the chances of success of system compromise by a malicious actor.We also proved that our solution was able to analyze the security of complex systems. The worst-case time complexity was assessed for each algorithm used. Several tests were performed to measure their real performances. Finally, we applied our solution on an IT network composed of several thousand elements.Future work should be done to improve the performance of the attack graph generation algorithm in order to analyze increasingly complex systems. Solutions should also be found to facilitate the system modeling step which is still a difficult task to perform, especially by humans. Finally, the simulation algorithm could be improved to be more realistic and take into account the real capabilities of the attacker. It would also be interesting to assess the impact of the attacks on the organization and its business processes
Książki na temat "Systèmes complexes – Réseaux d'ordinateurs"
Nilles, Jack M. Connexion des micros aux systèmes de télécommunications. Paris: Masson, 1986.
Znajdź pełny tekst źródłaWeisbuch, G. Dynamique des systèmes complexes: Une introduction aux réseaux d'automates. Paris: Éditions du Centre national de la recherche scientifique, 1989.
Znajdź pełny tekst źródłaHenshall, John. OSI: Les normes de communication entre systèmes ouverts. Paris: Masson, 1991.
Znajdź pełny tekst źródłanormalisation, Association française de, red. Interconnexion de systèmes ouverts (OSI): Recueil de normes françaises. Wyd. 2. Paris: AFNOR, 1991.
Znajdź pełny tekst źródłaMaiman, Maxime. Télécoms et réseaux. Wyd. 4. Paris: Masson, 1994.
Znajdź pełny tekst źródłaServin, Claude. Réseaux & télécoms: Cours avec 129 exercices corrigés. Wyd. 2. Paris: Dunod, 2006.
Znajdź pełny tekst źródłaCazes, Alain. Architecture des machines et des systèmes informatiques: Cours et exercices corrigés. Wyd. 3. Paris: Dunod, 2008.
Znajdź pełny tekst źródłaEmbedded systems and wireless technology. Enfield, NH: Science Publishers, 2012.
Znajdź pełny tekst źródłaTerplan, Kornel. Communication networks management. Wyd. 2. Englewood Cliffs, N.J: Prentice Hall, 1992.
Znajdź pełny tekst źródłaCommunication networks management. Englewood Cliffs: Prentice-Hall International, 1987.
Znajdź pełny tekst źródłaCzęści książek na temat "Systèmes complexes – Réseaux d'ordinateurs"
SEMMOUD, Abderrazaq, i Badr BENMAMMAR. "La sécurité intelligente des réseaux informatiques". W Gestion et contrôle intelligents des réseaux, 5–28. ISTE Group, 2020. http://dx.doi.org/10.51926/iste.9008.ch1.
Pełny tekst źródłaBERNOT, Gilles, Hélène COLLAVIZZA i Jean-Paul COMET. "Méthodes de vérification formelle pour la modélisation en biologie : le cas des réseaux de régulation biologique". W Approches symboliques de la modélisation et de l’analyse des systèmes biologiques, 275–335. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9029.ch8.
Pełny tekst źródłaStreszczenia konferencji na temat "Systèmes complexes – Réseaux d'ordinateurs"
Guiserix, Micheline, Gina Chiquillo, Jonathan Brown, Ben Amor H., Gwenaël Barbaud i P. Stevenin. "La modélisation des systèmes complexes, un concept novateur pour la gestion des actifs des réseaux électriques". W Congrès Lambda Mu 20 de Maîtrise des Risques et de Sûreté de Fonctionnement, 11-13 Octobre 2016, Saint Malo, France. IMdR, 2016. http://dx.doi.org/10.4267/2042/61727.
Pełny tekst źródłaMagri, Julie, Ludovic Grossard, Laurent Delage i François Reynaud. "Projet ALOHA : Interféromètre fibré à conversion de fréquence dans le moyen et lointain infrarouge". W Les journées de l'interdisciplinarité 2022. Limoges: Université de Limoges, 2022. http://dx.doi.org/10.25965/lji.83.
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