Literatura científica selecionada sobre o tema "Cohérence causal"
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Artigos de revistas sobre o assunto "Cohérence causal"
Berna, F. "Le récit de vie des patients souffrant de schizophrénie". European Psychiatry 28, S2 (novembro de 2013): 43–44. http://dx.doi.org/10.1016/j.eurpsy.2013.09.111.
Texto completo da fonteSirven, Nicolas, e Myriam Lescher-Cluzel. "Les groupements hospitaliers de territoire ont-ils mis un terme à la course aux armes médicales ?" Revue économique Vol. 74, n.º 3 (20 de julho de 2023): 471–92. http://dx.doi.org/10.3917/reco.743.0471.
Texto completo da fonteLe Prestre, Philippe. "La reconstruction identitaire de l’Amérique après le 11 septembre". Études internationales 35, n.º 1 (8 de junho de 2004): 25–47. http://dx.doi.org/10.7202/008446ar.
Texto completo da fonteLalvée, Brigitte. "Du a , veuf des Noms‑du‑Père qu’il engendrait, à la béance d’où se conçoivent les quatre concepts". Essaim 52, n.º 1 (28 de março de 2024): 7–29. http://dx.doi.org/10.3917/ess.052.0007.
Texto completo da fonteValenzuela, Sebastian, e Gennadiy Chernov. "Explicating the Values-Issue Consistency Hypothesis through Need for Orientation". Canadian Journal of Communication 41, n.º 1 (16 de fevereiro de 2016). http://dx.doi.org/10.22230/cjc.2016v41n1a2915.
Texto completo da fontePadilha, Valquiria. "NOJO, HUMILHAÇÃO E CONTROLE NA LIMPEZA DE SHOPPING CENTERS NO BRASIL E NO CANADÁ". Caderno CRH 27, n.º 71 (5 de dezembro de 2014). http://dx.doi.org/10.9771/ccrh.v27i71.19316.
Texto completo da fonteTeses / dissertações sobre o assunto "Cohérence causal"
Zawirski, Marek. "Cohérence à terme fiable avec des types de données répliquées". Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066638/document.
Texto completo da fonteEventually consistent replicated databases offer excellent responsiveness and fault-tolerance, but expose applications to the complexity of concurrency andfailures. Recent databases encapsulate these problems behind a stronger interface, supporting causal consistency, which protects the application from orderinganomalies, and/or Replicated Data Types (RDTs), which ensure convergent semantics of concurrent updates using object interface. However, dependable algorithms for RDT and causal consistency come at a cost in metadata size. This thesis studies the design of such algorithms with minimized metadata, and the limits of the design space. Our first contribution is a study of metadata complexity of RDTs. RDTs use metadata to provide rich semantics; many existing RDT implementations incur high overhead in storage space. We design optimized set and register RDTs with metadata overhead reduced to the number of replicas. We also demonstrate metadata lower bounds for six RDTs, thereby proving optimality of four implementations. Our second contribution is the design of SwiftCloud, a replicated causally-consistent RDT object database for client-side applications. We devise algorithms to support high numbers of client-side partial replicas backed by the cloud, in a fault-tolerant manner, with small metadata. We demonstrate how to support availability and consistency, at the expense of some slight data staleness; i.e., our approach trades freshness for scalability (small metadata, parallelism), and availability (ability to fail-over between data centers). We validate our approach with experiments involving thousands of client replicas
Martin, Benoît. "TTCC : Transactional-Turn Causal Consistency". Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS114.
Texto completo da fonteServerless computing applications are built using asynchronous message-based frameworks which enable users to abstractly compose functions in the cloud. Very often, applications need to store state and to handle business logic, such as user authentication, real-time stream processing or collaborative workspaces. Stateful serverless computing stores state in a distributed database such as DynamoDB. This common architectural scenario is brittle because the data consistency guarantees for the composition of the message layer and of the database layer are not well defined. This can result in inconsistency, crashes and data loss. Consistency is the set of rules that constraint the order in which updates (e.g. sending a message or assigns a shared variable) become visible (to receivers or to readers). There are many consistency models, ranging from strict serializability or linearizability, where become updates are visible instantaneously to all processes, to the weakest consistency models, where updates are delivered to remote nodes in no predictable order. Most existing systems are designed to communicate either by message or by shared memory, but not both. Therefore, the literature defines message-based and data-based consistency models separately. However, serverless computing combines both paradigms. Maintaining separate consistency guarantees is non-intuitive and can lead to inconsistencies between message-delivery and shared-object guarantees. A unified consistency model for message passing and shared memory is required to avoid such errors. The model should ensure that multiple pieces of data remain emph{mutually} consistent, whether data is sent using messages or shared in a distributed memory. Serverless computing is asynchronous and thus incompatible with strong consistency (e.g. linearizability or serializability) as it imposes strong synchronicity requirements. On the other end of the spectrum, eventual consistency violates intuition. Causal consistency is a useful intermediate model, because it is asynchronous, and at the same time provides useful guarantees that ease reasoning. Our TTCC model is a transactional, causally consistent, memory-message model, that unifies message passing and shared memory in an asynchronous and isolated environment
Zawirski, Marek. "Cohérence à terme fiable avec des types de données répliquées". Electronic Thesis or Diss., Paris 6, 2015. http://www.theses.fr/2015PA066638.
Texto completo da fonteEventually consistent replicated databases offer excellent responsiveness and fault-tolerance, but expose applications to the complexity of concurrency andfailures. Recent databases encapsulate these problems behind a stronger interface, supporting causal consistency, which protects the application from orderinganomalies, and/or Replicated Data Types (RDTs), which ensure convergent semantics of concurrent updates using object interface. However, dependable algorithms for RDT and causal consistency come at a cost in metadata size. This thesis studies the design of such algorithms with minimized metadata, and the limits of the design space. Our first contribution is a study of metadata complexity of RDTs. RDTs use metadata to provide rich semantics; many existing RDT implementations incur high overhead in storage space. We design optimized set and register RDTs with metadata overhead reduced to the number of replicas. We also demonstrate metadata lower bounds for six RDTs, thereby proving optimality of four implementations. Our second contribution is the design of SwiftCloud, a replicated causally-consistent RDT object database for client-side applications. We devise algorithms to support high numbers of client-side partial replicas backed by the cloud, in a fault-tolerant manner, with small metadata. We demonstrate how to support availability and consistency, at the expense of some slight data staleness; i.e., our approach trades freshness for scalability (small metadata, parallelism), and availability (ability to fail-over between data centers). We validate our approach with experiments involving thousands of client replicas
Toumlilt, Ilyas. "Colony : a Hybrid Consistency System for Highly-Available Collaborative Edge Computing". Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS447.
Texto completo da fonteImmediate response, autonomy and availability is brought to edge applications, such as gaming, cooperative engineering, or in-the-field information sharing, by distributing and replicating data at the edge. However, application developers and users demand the highest possible consistency guarantees, and specific support for group collaboration. To address this challenge, COLONY guarantees Transactional Causal Plus Consistency (TCC+) globally, dovetailing with Snapshot Isolation within edge groups. To help with scalability, fault tolerance and security, its logical communication topology is tree-like, with replicated roots in the core cloud, but with the flexibility to migrate a node or a group. Despite this hybrid approach, applications enjoy the same semantics everywhere in the topology. Our experiments show that local caching and peer groups improve throughput and response time significantly, performance is not affected in offline mode, and that migration is seamless
Pleşca, Cezar. "Supervision de contenus multimédia : adaptation de contenu, politiques optimales de préchargement et coordination causale de flux". Toulouse, INPT, 2007. http://ethesis.inp-toulouse.fr/archive/00000499/.
Texto completo da fonteDistributed systems information quality depends on service responsiveness, data consistency and its relevance according to user interests. The first part of this study deals with hypermedia content delivery and uses Markov Decision Processes (MDP) to derive aggresive optimal prefetching policies integrating both users habits and ressource availability. The second part addresses the partial observable contexts. We show how a ressource-based policy adaptation (MDP model) can be modulated according to user interest, using partially observable MDP (POMDP). Finally, the third part is placed in distributed multimedia applications context. We propose a coordination-level middleware for supporting flexible consistency. Our simulations show that its ability to handle several partial orders (e. G. Fifo, causal, total) makes it better than classic or [delta)-causality
Li, Honghao. "Interpretable biological network reconstruction from observational data". Electronic Thesis or Diss., Université Paris Cité, 2021. http://www.theses.fr/2021UNIP5207.
Texto completo da fonteThis thesis is focused on constraint-based methods, one of the basic types of causal structure learning algorithm. We use PC algorithm as a representative, for which we propose a simple and general modification that is applicable to any PC-derived methods. The modification ensures that all separating sets used during the skeleton reconstruction step to remove edges between conditionally independent variables remain consistent with respect to the final graph. It consists in iterating the structure learning algorithm while restricting the search of separating sets to those that are consistent with respect to the graph obtained at the end of the previous iteration. The restriction can be achieved with limited computational complexity with the help of block-cut tree decomposition of the graph skeleton. The enforcement of separating set consistency is found to increase the recall of constraint-based methods at the cost of precision, while keeping similar or better overall performance. It also improves the interpretability and explainability of the obtained graphical model. We then introduce the recently developed constraint-based method MIIC, which adopts ideas from the maximum likelihood framework to improve the robustness and overall performance of the obtained graph. We discuss the characteristics and the limitations of MIIC, and propose several modifications that emphasize the interpretability of the obtained graph and the scalability of the algorithm. In particular, we implement the iterative approach to enforce separating set consistency, and opt for a conservative rule of orientation, and exploit the orientation probability feature of MIIC to extend the edge notation in the final graph to illustrate different causal implications. The MIIC algorithm is applied to a dataset of about 400 000 breast cancer records from the SEER database, as a large-scale real-life benchmark
Debord, Sfar Laurence Marie. "Cohérence de la discordance temporelle dans l'article de presse en espagnol péninsulaire contemporain". Thesis, Paris 10, 2020. http://faraway.parisnanterre.fr/login?url=http://bdr.parisnanterre.fr/theses/intranet/2020/2020PA100049/2020PA100049.pdf.
Texto completo da fonteThe practice of Spanish in speech implies different possibilities of expression. It comes up against the normative rigidity of the temporal concordance of prescriptive grammars: tense of the principal / tense of the subordinate, sometimes including the anteriority and posteriority of the processes. Our objective attempts to determine this misunderstood mode that is the subjunctive. Our approach consisted in accounting for the different reasons for the temporal discordance in the contemporary peninsular press. Indeed, sometimes the journalist-reporter has the choice between two temporal possibilities of the subjunctive. Thus, we show that a single meaning includes all the meanings attributed to this mode whose parameters can be determined thanks to L. Gosselin’s computational theory of modalities. Our research highlights the multifactorial causes that are sometimes interacting (i.e. the double semantics of modal alternation introductory verbs, the type of discourse, the enunciative double positioning, the speaker’s point of view, the temporal dislocation, the adverbs of opposite time in the two propositions, the textual coherence, the inferences, etc.) which can lead, despite the non-concordance, to a better expressiveness thanks to the sense effects of the times of the subjective
Guha, Amal. "Compréhension de textes et représentation des relations causales". Phd thesis, Université Paris Sud - Paris XI, 2003. http://tel.archives-ouvertes.fr/tel-00161089.
Texto completo da fonteGras, Nicolas. "Essai sur les clauses contractuelles". Thesis, Clermont-Ferrand 1, 2014. http://www.theses.fr/2014CLF10458/document.
Texto completo da fonteContractual clauses are key elements of a contract and should be studied more closely in order to facilitate their use by practioners and to enhance understanding by the judge.This work does not claim to be exhaustive. Its purpose is not to to identify, enumerate or catalogue the numerous clauses that abound in all branches of private law. Such a project would only yield a fragmented, descriptive insight. A general reflection on clauses as legal instruments does not necessitate a detailed examination of all applications but only that their most notable effects be highlighted.Firstly, a typology of the most important clauses had to be drawn up based on a functional approach regarding their contractual applications. The parties to a contract generally have in view four main goals: organising the execution of the contract, managing the risks, avoiding legal pitfalls, and foreseeing the end of the contract and any potential sanctions. The establishment of a classification based on function ensured that clauses arising from economic necessity as well as clauses considered to be independent would not beneglected. Hence, this project comprises research on the details of implementation of clauses in the same category, leading to the setting out of a legal regime appropriate to each category. Secondly, the aim of analysing the clauses’ functions led to studying the links between clauses and contracts. Clauses basically serve to organise the terms of the contract, extend its effects and establish sanctions. However, in parallel to the two levels – the general theory of contracts and special contracts law – it had to be demonstrated that a general theory of contractual clauses did not constitute a third level of rules applicable to contracts. Nevertheless, an overall view of the influence of their effects, both in terms of and beyond the contract, has allowed for the establishment of a general regime presenting the conditions of validity and common rules applicable to all clauses
Hostache, Renaud. "Analyse d’images satellitaires d’inondations pour la caractérisation tridimensionnelle de l’alea et l’aide à la modélisation hydraulique". Paris, ENGREF, 2006. https://pastel.archives-ouvertes.fr/pastel-00002016.
Texto completo da fonteThe Thesis aims at deploying methods of flood satellite image analysis beyond 2D flood area delineation in order to estimate water levels and to help hydraulic modelling. Based on Raclot (2003) works with aerial photographs, which provide ±20cm mean uncertainty, the water level estimation method uses satellite RADAR images of flood and a fine DEM. The method is composed of two steps : i) flood cartography and analysis of image hydraulic relevance for water level estimation, ii) fusion between relevant information resulting from the image with a fine Digital Elevation Model (DEM) and constraining the water levels extracted from image by concepts of coherence with respect to a hydraulic flow through a plain. It provides water level estimations with a ±38cm mean uncertainty for a RADARSAT-1 image of a Mosel Flood (1997, France). In addition, validation works with an ENVISAT image of an Alzette river flood (Luxembourg, 2003) allowed us to calculate a Root Mean Square Error of 13 cm on the estimates of water levels. To help hydraulic modelling, the PhD aims at reducing equifinality thanks to satellite images of flood. To meet this aim, a "traditional" step of calibration thanks to hydrographs is completed by comparison between simulation results and flood extends or water levels extracted from images. To deals with calibration uncertainties, Monte-Carlo simulations have been used. In perspective, the results of the thesis imply great benefits for flood evolution forecasting after acquisition of flood satellite images because the use of these images as initial conditions or calibration data provide better-constrained models
Livros sobre o assunto "Cohérence causal"
Shkolnikov, Vladimir D. (Vladimir David), 1964-, Vallin Jacques e European Population Conference (1991 : Paris, France), eds. La mortalité par causes en URSS de 1970 à 1987: Reconstruction de séries statistiques cohérentes. Paris: Institut national d'études démographiques, 1992.
Encontre o texto completo da fonteReconnaître les controverses de l'hésitation vaccinale. EDP Sciences, 2022. http://dx.doi.org/10.1051/978-2-7598-2766-4.
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