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El, Hibaoui Abdelaaziz. "Analyse de quelques algorithmes probabilistes à délais aléatoires". Bordeaux 1, 2006. http://www.theses.fr/2006BOR13323.
Pełny tekst źródłaAhmad, Jamil. "Modélisation hybride et analyse des dynamiques des réseaux de régulations biologiques en tenant compte des délais". Nantes, 2009. http://www.theses.fr/2009NANT2001.
Pełny tekst źródłaBiological regulatory networks (BRN) represent interactions among the biological entities. For example, genetic regulatory networks are graphs where vertices stand for genes or their products (RNA or proteins) and edges represent interactions among them. The aim of this thesis is to propose a hybrid modelling formalism in order to automatically analyse the dynamics of the BRN. The qualitative formalism of René Thomas is a well-known approach for the discrete modelling of BRN. Due to the complete abstraction of time in the formalism of René Thomas, it is not possible to distinguish between cyclic and non-cyclic behaviours of BRN. Based on the discrete formalism of René Thomas, we introduce the hybrid modelling of BRN by using the formalism of linear hybrid automata (LHA) that takes into account the production and degradation delays of genes' products. The hybrid modelling captures both the discrete evolution of genes' expressions and the temporal aspect (with time) of the continuous evolution of genes' products. The hybrid modelling allows us to automatically analyse a BRN by a model-checking tool, for example HyTech, for cyclic behaviour (the so-called invariance kernel), stable states and paths between two given states. These behaviours have biological signicances. For example, cycles represent homeostasy while stable states represent multistationarity. These behaviours are characterised by the delay constraints, which are considered as necessary and sucient conditions for the existence of these behaviours. We present a method for the computation of length, volume and diameter of the invariance kernel. These dierent measuring features allow us to introduce the notion of stability of the invariance kernel. The hybrid modelling formalism is applied on some biological examples. These examples are the BRN of the bacterium pseudomonas aeruginosa, the BRN of the circadian cycle of mammals, the BRN of the virus lambda phage, the activation and anergy system of the T-cell and the carbon starvation response network of the Escherichia coli
Mangoua, sofack William. "Amélioration des délais de traversée pire cas des réseaux embarqués à l’aide du calcul réseau". Thesis, Toulouse, ISAE, 2014. http://www.theses.fr/2014ESAE0024/document.
Pełny tekst źródłaThe thesis addresses performance analysis of embedded real time network using network calculus. Network calculus is a theory based on min-plus algebra. We use network calculus to assess the quality of service of a residual flow in two context : aggregation with non-preemptive priority policy and DRR policy. The main contribution concerns the evaluation of residual service, given to each flow. We also present how to handle DRR and non-preemptive priority policy hierrachically
Nguyen, Thi Thu Hang. "Les mécanismes d'incitation à la coopération dans les réseaux tolérants aux délais". Thesis, Toulouse, INSA, 2018. http://www.theses.fr/2018ISAT0032/document.
Pełny tekst źródłaDelay-Tolerant Networks (DTNs) were designed to provide a sustainable means of communication between mobile terminals in regions without cellular infrastructure. In such networks, the set of neighbors of every node changes over time due to the mobility of nodes, resulting in intermittent connectivity and unstable routes in the network. We analyze the performance of an incentive scheme for two-hop DTNs in which a backlogged source pro- poses a fixed reward to the relays to deliver a message. Only one message at a time is proposed by the source. For a given message, only the first relay to deliver it gets the reward corresponding to this message thereby inducing a competition between the relays. The relays seek to maximize the expected reward for each message whereas the objective of the source is to satisfy a given constraint on the probability of message delivery. We consider two different settings: one in which the source tells the relays for how long a message is in circulation, and one in which the source does not give this information. In the first setting, we show that the optimal policy of a relay is of thresh- old type: it accepts a message until a first threshold and then keeps the message until it either meets the destination or reaches the second threshold. Formulas for computing the thresholds as well as probability of message delivery are derived for a backlogged source. We then investigate the asymptotic performance of this setting in the mean field limit. When the second thresh- old in infinite, we give the mean-field ODE and show that all the messages have the same probability of successful delivery. When the second threshold is finite we only give an ODE approximation since in this case the dynamics are not Markovian. For the second setting, we assume that the source proposes each message for a fixed period of time and that a relay decides to accept a message accord- ing to a randomized policy upon encounter with the source. If it accepts the message, a relay keeps it until it reaches the destination. We establish under which condition the acceptance probability of the relays is strictly positive and show that, under this condition, there exists a unique symmetric Nash equilibrium, in which no relay has anything to gain by unilaterally changing its acceptance probability. Explicit expressions for the probability of message delivery and the mean time to deliver a message at the symmetric Nash equilibrium are derived, as well as an expression of the asymptotic value of message delivery. Finally, we present numerous simulations results to compare performances of the threshold-type strategy and the randomized strategy, in order to determine under which condition it is profitable for the source to give the information on the age of a message to the relays
Pavel, Raluca. "La fraude fiscale : Une analyse théorique et expérimentale". Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTD047.
Pełny tekst źródłaThis thesis studies taxpayers' dynamic incentives to evade taxes. The first chapter introduces a dynamic model of tax evasion. We prove that higher limitation periods increase tax compliance. We also determine the expected tax revenues generated by retroactive and static auditing policies, with respect to the levels of tax rates and expected discounted penalties. We obtain that retroactive auditing generates higher expected tax revenues than static auditing. The second chapter provides theoretical and experimental evidence about subjects' incentives to evade taxes, with respect to a retroactive inspection policy. Our experimental results confirm theoretical predictions, i.e. higher limitation periods increase agents' compliance. The third chapter introduces a second laboratory experiment, in order to compare the efficiency of two main audit schemes: retroactive versus static auditing. We find that retroactive auditing policies are more efficient in enhancing tax compliance, than policies of static auditing accompanied by high audit rates
Irain, Malik. "Plateforme d'analyse de performances des méthodes de localisation des données dans le cloud basées sur l'apprentissage automatique exploitant des délais de messages". Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30195.
Pełny tekst źródłaCloud usage is a necessity today, as data produced and used by all types of users (individuals, companies, administrative structures) has become too large to be stored otherwise. It requires to sign, explicitly or not, a contract with a cloud storage provider. This contract specifies the levels of quality of service required for various criteria. Among these criteria is the location of the data. However, this criterion is not easily verifiable by a user. This is why research in the field of data localization verification has led to several studies in recent years, but the proposed solutions can still be improved. The work proposed in this thesis consists in studying solutions of location verification by a user, i.e. solutions that estimate data location and operate using landmarks. The implemented approach can be summarized as follows: exploiting communication delays and using network time models to estimate, with some distance error, data location. To this end, the work carried out is as follows: • A survey of the state of the art on the different methods used to provide users with location information. • The design of a unified notation for the methods studied in the survey, with a proposal of two scores to assess methods. • Implementation of a network measurements collecting platform. Thanks to this platform, two datasets were collected, at both national level and international level. These two data sets are used to evaluate the different methods presented in the state of the art survey. • Implementation of an evaluation architecture based on the two data sets and the defined scores. This allows us to establish the quality of the methods (success rate) and the quality of the results (accuracy of the result) thanks to the proposed scores
Fromentin, Jonathan. "Modélisation hybride temporelle et analyse par contraintes des réseaux de régulation biologiques". Phd thesis, Ecole centrale de nantes - ECN, 2009. http://tel.archives-ouvertes.fr/tel-00443781.
Pełny tekst źródłaBauer, Henri. "Analyse pire cas de flux hétérogènes dans un réseau embarqué avion". Thesis, Toulouse, INPT, 2011. http://www.theses.fr/2011INPT0008/document.
Pełny tekst źródłaThe certification process for avionics network requires guaranties on data transmission delays. However, calculating the worst case delay can be complex in the case of industrial AFDX (Avionics Full Duplex Switched Ethernet) networks. Tools such as Network Calculus provide a pessimistic upper bound of this worst case delay. Communication needs of modern commercial aircraft are expanding and a growing number of flows with various constraints and characteristics must share already existing resources. Currently deployed AFDX networks do not differentiate multiple classes of traffic: messages are processed in their arrival order in the output ports of the switches (FIFO servicing policy). The purpose of this thesis is to show that it is possible to provide upper bounds of end to end transmission delays in networks that implement more advanced servicing policies, based on static priorities (Priority Queuing) or on fairness (Fair Queuing). We show how the trajectory approach, based on scheduling theory in asynchronous distributed systems can be applied to current and future AFDX networks (supporting advanced servicing policies with flow differentiation capabilities). We compare the performance of this approach with the reference tools whenever it is possible and we study the pessimism of the computed upper bounds
Leroy, Fanny. "Etude des délais de survenue des effets indésirables médicamenteux à partir des cas notifiés en pharmacovigilance : Problème de l'estimation d'une distribution en présence de données tronquées à droite". Phd thesis, Université Paris Sud - Paris XI, 2014. http://tel.archives-ouvertes.fr/tel-01011262.
Pełny tekst źródłaWu, Zeqin. "SSTA Basée sur la Propagation des Moments". Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2009. http://tel.archives-ouvertes.fr/tel-00471241.
Pełny tekst źródłaBelouanas, Salah-Eddine. "Dissémination de contenus populaires et tolérants au délai dans les réseaux cellulaires". Electronic Thesis or Diss., Paris 6, 2017. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2017PA066230.pdf.
Pełny tekst źródłaCellular resources are valuable and must be saved whenever possible. In this thesis, we address the problem of content dissemination within an overloaded cellular network. Firstly, we propose SCoD (Scheduled Content Delivery), a purely cellular dissemination strategy that exploits the mobility of users and their delay tolerance in order to postpone transmissions. SCoD waits for users to gather around a minimum number of access points so that the total number of transmissions is reduced. To trigger transmissions, SCoD relies on different decision functions which launch, if necessary, a multicast transmission. The second part of this thesis deals with the same problem of saving cellular resources, but from another angle. We use D2D (Device-to-Device) communications with multicast to mitigate the traffic load on the infrastructure. We study the benefits of opportunistic communications in the context of a content distribution service based on user subscriptions. We present our results in two ways. First, we illustrate the benefits of D2D communications in a content dissemination process where the cost of opportunistic transmission is negligible compared to that of cellular transmission. Then, we consider the case where users must be compensated for their participation in the dissemination process. Therefore, there is a tradeoff to be found, we thus provide guidelines in this direction and show the variation of such a tradeoff as a function of several network parameters
Belouanas, Salah-Eddine. "Dissémination de contenus populaires et tolérants au délai dans les réseaux cellulaires". Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066230/document.
Pełny tekst źródłaCellular resources are valuable and must be saved whenever possible. In this thesis, we address the problem of content dissemination within an overloaded cellular network. Firstly, we propose SCoD (Scheduled Content Delivery), a purely cellular dissemination strategy that exploits the mobility of users and their delay tolerance in order to postpone transmissions. SCoD waits for users to gather around a minimum number of access points so that the total number of transmissions is reduced. To trigger transmissions, SCoD relies on different decision functions which launch, if necessary, a multicast transmission. The second part of this thesis deals with the same problem of saving cellular resources, but from another angle. We use D2D (Device-to-Device) communications with multicast to mitigate the traffic load on the infrastructure. We study the benefits of opportunistic communications in the context of a content distribution service based on user subscriptions. We present our results in two ways. First, we illustrate the benefits of D2D communications in a content dissemination process where the cost of opportunistic transmission is negligible compared to that of cellular transmission. Then, we consider the case where users must be compensated for their participation in the dissemination process. Therefore, there is a tradeoff to be found, we thus provide guidelines in this direction and show the variation of such a tradeoff as a function of several network parameters
Hao, Jialin. "Machine learning for road active safety in vehicular networks". Electronic Thesis or Diss., Institut polytechnique de Paris, 2024. http://www.theses.fr/2024IPPAS003.
Pełny tekst źródłaThis thesis focuses on the development of a safe and efficient LCA maneuver in the context of drone-assisted vehicle networks (DAVN). In fact, lane change maneuvers contribute significantly to road accidents, requiring effective solutions within road networks. Current lane change assistance (LCA) strategies relying solely on deep reinforcement learning (DRL) are limited by local vehicle information, neglecting a global view of traffic conditions. To address this problem, unmanned aerial vehicles (UAVs), or drones, present a promising extension of automotive network services due to their mobility, computing capabilities, and line-of-sight (LoS) communications links with road vehicles. In the first step, we conduct a literature review on LCA within DAVN, highlighting the potential of drones to enhance road safety. Existing LCA approaches predominantly rely on local vehicle information and fail to consider overall traffic states. To address this limitation, we propose the GL-DEAR: joint global and local drone-assisted lane change platform based on Deep-Q Network (DQN) with a dynamic reward function, for LCA with drones' assistance. The proposed platform consists of three modules: road with random risks and emergency vehicles; data file acquisition and processing; and real-time lane change decision-making. The lane change maneuver is based on a Deep Q-Network with dynamic reward functions. Specifically, we adopt the authentic NGSIM dataset-based lane change models for ordinary road vehicles to recreate real world lane change behaviors in the simulations. Numerical results demonstrate the platform's ability to achieve collision-free trips on risky highways with emergency vehicles. In the second step, we identify a lack of calibration for the global update frequency in FL algorithms and the absence of thorough drone-level processing delay assessment. To this end, we propose the drone assisted Federated Reinforcement Learning (FRL)-based LCA framework, DAFL. This framework enables cooperative learning between ego vehicles by applying Federated Learning (FL). It includes a client reputation-based global model aggregation algorithm and a comprehensive analysis of End-to-End (E2E) delay at the drone. Specifically, the global update frequency is dynamically adjusted according to road safety measurements and drone energy consumption, yielding efficient results in simulations. In the third step, we devise the DOP-T algorithm for optimizing drone trajectories in dynamic vehicular networks. This algorithm aims to balance drone energy consumption and road safety. We provide a comprehensive state-of-the-art review of the existing drone trajectory planning techniques. Then, based on the vehicle E2E delay modeling and the drone energy consumption modeling in the second step, we train a Offline Reinforcement Learning (ORL) model to avoid power-consuming online training. Simulation results demonstrate a significant reduction in drone energy consumption and vehicle E2E delay using the trained model
Espinosa, Romain. "Analyse économique de la norme juridique : des origines constitutionnelles à la mise en oeuvre par le juge". Thesis, Paris 2, 2015. http://www.theses.fr/2015PA020044/document.
Pełny tekst źródłaThe legitimacy and the stability of political systems have very often been studied in economics separate from considerations about legal norms’ enforcement. My objective is to combine these different approaches, and to place the question of the legal enforcement at the heart of the debate about institutions. This work is made of cinq empirical and experimental investigations that deal with each of the stages of the political and legal process.This first paper analyzes the impact of constitutional rights on public expenditures. The second article explores the influence of self-serving biases on the demand and the supplyof redistribution. The third analysis focuses on the decisions of the French Constitutional Council. The fourth work deals with the recent reform of the judiciary map of Frenchlabor courts. The last study investigates the relationship between the composition of the elected jurors in French labor courts and the way cases are terminated.Our investigations rely on econometric and experimental techniques. They use standard estimation methods (OLS, GLS, Probit, Logit, Within OLS), selection models (Heckman,Triprotibt), techniques for endogeneity correction (2SLS), and methods to estimate systems of equations (3SLS). The experimental analysis makes use of standard statistical tests(permutation tests, proportion tests, two-group mean-comparison tests), and more recent methods to solve heterogeneity (wild clustering)
Schmauch, Jean-François. "Identification et description des trois principales écoles d'organisation des services ayant en charge de répondre aux situations d'urgence. Analyse et comparaison de la rationalité, de l'efficacité et de la rentabilité de ces services à partir de la résolution d'équations simples s'écrivant sous la forme générale f(risques, moyens opérationnels, délais d'intervention)". Evry-Val d'Essonne, 2007. http://www.theses.fr/2007EVRY0012.
Pełny tekst źródłaMost Fire and Rescue services and Medical Emergency services are organised along the lines of one of two schools originating in the United Kingdom and in Germany. In order to present these schools we first decided to analyse the history of the regulations they operate under, by writing them in the form of a generic equation: f(Risks, Operational Resources, Time to attend). Fundamental differences regarding officer status, allocation, operational resources quality and quantity, recording of planned vs. Actual performance indicators, etc. Became apparent. We then solved the proposed equation for Austria, Denmark, Sweden, Finland, Switzerland and France. Finally, we demonstrated the cost-efficiency of Fire and Rescue services and Medical Emergency services when considered in association with the economic structures they have to protect
Mourani, Iyad. "Étude des systèmes de productions automatisée soumis à des aléas". Metz, 2006. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/2006/Mourani.Iyad.SMZ0627.pdf.
Pełny tekst źródłaThis work addresses both discrete-flow and continuous-flow manufacturing systems. Moreover, Petri nets model is used for the simulation of the various manufacturing systems. The performance evaluation and especially the throughput rate of a production system is studied and an analytical comparative study of the two existing failure models, namely operation-dependant failures and time-dependant failures is carried out. An analytical study of the inventory cost function and optimal control policy are presented. The majority of the continuous-flow models do not take into account delays (production lead-times and transportation) which have a great impact on performance measures and optimization. Hence, the modeling and the impact of these delays on the throughput rate in continuous-flow models are studied. The control of the production systems with delays is addressed and the IPA (Infinitesimal Perturbation Analysis) technique is used to optimize our production system. Various control policies are considered, namely, Kanban policy, Echelon Bases Stock policy, and CONWIP policy. A simulation-based optimization is used to determine the optimal buffer level according to the given control policy
Zhang, Ruifeng. "Analyse du compromis énergie-délai pour les transmissions radio multi-sauts dans les réseaux de capteurs". Phd thesis, INSA de Lyon, 2009. http://tel.archives-ouvertes.fr/tel-00534833.
Pełny tekst źródłaMaldent, Anne-Sophie. "Analyse économique de la marque et du délit d'achat de contrefaçon". Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM2024.
Pełny tekst źródłaTo the extent that brandname facilitates consumer choice in the spectrum of varieties and qualities of products, it is a determining factor of the efficient allocation of resources in the production process, thus becoming an important corporate asset, up to the point that there is now a "market" of brands where meet supply and demand for brands. Thus, this research is based on an economic analysis of the supply of brands by firms and counterfeiters and the demand for brands by consumers. First, it is to show that supplying a brand is comparable to a means of differentiating the firm in a competitive market, and the mark appears as an important driver of entrepreneurial activity and a source growth. Then, another part of the research is devoted to the analysis of the mark on the demand side of the market, including a particular aspect of the demand for trademark which is the demand for trademark infringement. We build a theoretical model of purchasing counterfeited brands with a mechanism of game theory on the formation of a social norm. Finally, we attempt to show that counterfeit consumption behavior remains largely influenced by the legal framework governing trademark infringement, and that the effectiveness of policies to fight against this phenomenon is affected by an expansion of the market counterfeiting, which results from the increasing expansion of new technologies and the growth of consumption in the network
Maldent, Anne-Sophie. "Analyse économique de la marque et du délit d'achat de contrefaçon". Electronic Thesis or Diss., Aix-Marseille, 2014. http://www.theses.fr/2014AIXM2024.
Pełny tekst źródłaTo the extent that brandname facilitates consumer choice in the spectrum of varieties and qualities of products, it is a determining factor of the efficient allocation of resources in the production process, thus becoming an important corporate asset, up to the point that there is now a "market" of brands where meet supply and demand for brands. Thus, this research is based on an economic analysis of the supply of brands by firms and counterfeiters and the demand for brands by consumers. First, it is to show that supplying a brand is comparable to a means of differentiating the firm in a competitive market, and the mark appears as an important driver of entrepreneurial activity and a source growth. Then, another part of the research is devoted to the analysis of the mark on the demand side of the market, including a particular aspect of the demand for trademark which is the demand for trademark infringement. We build a theoretical model of purchasing counterfeited brands with a mechanism of game theory on the formation of a social norm. Finally, we attempt to show that counterfeit consumption behavior remains largely influenced by the legal framework governing trademark infringement, and that the effectiveness of policies to fight against this phenomenon is affected by an expansion of the market counterfeiting, which results from the increasing expansion of new technologies and the growth of consumption in the network
Limnios, Nikolaos. "Systèmes avec délai de défaillance et processus semi-markoviens". Compiègne, 1991. http://www.theses.fr/1991COMPE091.
Pełny tekst źródłaGonzález, Martínez Esther. "L'audition de comparution immédiate : l'organisation des échanges langagiers". Paris, EHESS, 2003. http://www.theses.fr/2003EHES0056.
Pełny tekst źródłaThis thesis presents an ethnomethodological analysis of a corpus of verbal exchanges from immediate trial hearings and is based on the recordings made by Raymond Depardon for his documentary Délits flagrants (1994). The thesis looks into the procedures by which the prosecutors and suspects sequentially and endogenously organise their verbal exchanges. The verbal exchanges in question are recognisable by a plurality and an entanglement of forms of coordination qualified as "activities". While the analysis is centred on the practical aspects of these activities, it nonetheless tackles the conversational and relational aspects of these exchanges. The activities are analysed as such with regards to their various constituent elements, their dynamics, their localisations, their boundaries and the way in which they elaborate "what happened". The thesis also observes how these activities vary as well as how they are linked to one another, how they alternate and how they combine
Houle, Annie. "Délit de langue et paternité textuelle : une approche informatisée". Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/29405/29405.pdf.
Pełny tekst źródłaColin, Florence. "Analyse économique théorique de la délinquance politique". Paris, Institut d'études politiques, 1992. http://www.theses.fr/1992IEPP0020.
Pełny tekst źródłaThe thesis studies the logic of individuals behaviors concerning illegal political activity through an economic model composed of a supply function of political criminality, a demand function of security and a production function of repression. The purpose is to determine the gains and costs that affect the individual calculus of potential participants, and in which conditions they are going to increase or to decrease their time of participation (the supply quantity). Tha gains and costs of illegal political activity are : purs publics gains, private political gains, materials and psychological private gains, apprehension, condamnation, physical dammanges costs, opportunity costs due to foregone wage in the economic legal life. The "factor "preference for publics goods" amplificates the public and political private gains. We also take into account the choice of potential victims, State and private citizens. The demande for security of private citizens is integrated into that of the State, because they cannot resort to reppression to protect themselves. The State is the productor of repression to dissuade potentials participants to engage in political violence in order to express their discontent, and make them substitute legal political action to illegal one which become more costly
Locquet, Alexandre. "Analyses numériques de dynamiques chaotiques dans des systèmes optiques à délai : propriétés de synchronisation et extraction du déterminisme". Besançon, 2004. http://www.theses.fr/2004BESA2044.
Pełny tekst źródłaLe, Duc Aude. "Performances théoriques et analyse des schémas HARQ dans un contexte d'optimisation inter-couches". Phd thesis, Télécom ParisTech, 2010. http://pastel.archives-ouvertes.fr/pastel-00005994.
Pełny tekst źródłaAdnan, Muhammad. "Analyse pire cas exact du réseau AFDX". Thesis, Toulouse, INPT, 2013. http://www.theses.fr/2013INPT0146/document.
Pełny tekst źródłaThe main objective of this thesis is to provide methodologies for finding exact worst case end to end communication delays of AFDX network. Presently, only pessimistic upper bounds of these delays can be calculated by using Network Calculus and Trajectory approach. To achieve this goal, different existing tools and approaches have been analyzed in the context of this thesis. Based on this analysis, it is deemed necessary to develop new approaches and algorithms. First, Model checking with existing well established real time model checking tools are explored, using timed automata. Then, exhaustive simulation technique is used with newly developed algorithms and their software implementation in order to find exact worst case communication delays of AFDX network. All this research work has been applied on real life implementation of AFDX network, allowing us to validate our research work on industrial scale configuration of AFDX network such as used on Airbus A380 aircraft
Bonnici, Sandrine. "Le délit d'abus de biens sociaux dans les groupes de sociétés : analyse de l'interêt social". Montpellier 1, 2008. http://www.theses.fr/2008MON10053.
Pełny tekst źródłaPham, Tuan-Minh. "Modélisation et Analyse de la Distribution de Contenus dans un Réseau DTN". Phd thesis, Université Pierre et Marie Curie - Paris VI, 2011. http://tel.archives-ouvertes.fr/tel-00625620.
Pełny tekst źródłaFromantin, Jonathan. "Modélisation hybride temporelle et analyse par contraintes des réseaux de régulation biologiques". Ecole Centrale de Nantes, 2009. http://www.theses.fr/2009ECDN0009.
Pełny tekst źródłaNguyen, Huu-Nghi. "Estimation de l’écart type du délai de bout-en-bout par méthodes passives". Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1044/document.
Pełny tekst źródłaSince the early beginning of Internet, the amount of data exchanged over the networks has exponentially grown. The devices deployed on the networks are very heterogeneous, because of the growing presence of middleboxes (e.g., firewalls, NAT routers, VPN servers, proxy). The algorithms run on the networking devices (e.g., routing, spanning tree) are often complex, closed, and proprietary while the interfaces to access these devices typically vary from one manufacturer to the other. All these factors tend to hinder the understanding and the management of networks. Therefore a new paradigm has been introduced to ease the design and the management of networks, namely, the SDN (Software-defined Networking). In particular, SDN defines a new entity, the controller that is in charge of controlling the devices belonging to the data plane. Thus, in a SDN-network, the data plane, which is handled by networking devices called virtual switches, and the control plane, which takes the decisions and executed by the controller, are separated. In order to let the controller take its decisions, it must have a global view on the network. This includes the topology of the network and its links capacity, along with other possible performance metrics such delays, loss rates, and available bandwidths. This knowledge can enable a multi-class routing, or help guarantee levels of Quality of Service. The contributions of this thesis are new algorithms that allow a centralized entity, such as the controller in an SDN network, to accurately estimate the end-to-end delay for a given flow in its network. The proposed methods are passive in the sense that they do not require any additional traffic to be run. More precisely, we study the expectation and the standard deviation of the delay. We show how the first moment can be easily computed. On the other hand, estimating the standard deviation is much more complex because of the correlations existing between the different waiting times. We show that the proposed methods are able to capture these correlations between delays and thus providing accurate estimations of the standard deviation of the end-to-end delay. Simulations that cover a large range of possible scenariosvalidate these results
Licenziati, Francesca. "Recherche sur les matériaux et les techniques mis en œuvre dans les mosaïques en Méditerranée Orientale : les tesselles vitreuses des mosaïques hellénistiques de Délos : l’apport des analyses archéométriques". Thesis, Paris 10, 2016. http://www.theses.fr/2016PA100122.
Pełny tekst źródłaThis theses has comprised an experimental part involving the application of archaeometric analyses on glass and faience tesserae of the Hellenistic mosaics from Delos both in situ and in laboratory. Moreover it has involved a bibliographic research concerning on the one hand the use of vitreous materials in the Hellenistic mosaics in the Mediterranean and on the other hand the archaeometric studies on glass and faience of the considered period. This research allowed to enrich the knowledge about the mosaics from Delos through the physico-chemical characterisation of their vitreous tesserae and to contribute to the question concerning the supply of glass and faience by the mosaicists. In addition, as regards glass, the combination and comparison of the compositional data obtained on the tesserae from Delos during this study and those concerning coloured glass found in the bibliography has permitted to formulate some hypotheses concerning the production organisation/system of coloured glass during the Hellenistic period. The analyses of a large number of glass tesserae highlighted a peculiarity of blue and turquoise tesserae which allowed us to hypothesise that a lead-rich antimony ore was used for their opacification.Finally, the application of non-invasive analytical methods using portable instruments permitted to evaluate the limits and advantages of this type of approach in the study of vitreous tesserae. To overcome some problems in the calculation of weathered tesserae composition provided by the software of the XRF instrument used, an alternative calculation procedure involving the use of PyMca software has been developed
Samson, Jean-François. "Analyse et modélisation stochastique d'un réseau local appliqué à la commande multiprocesseurs et temps réel d'un robot mobile : étude qualitative des effets d'un délai de transmission aléatoire sur le comportement des asservissements". Bordeaux 1, 1990. http://www.theses.fr/1990BOR10568.
Pełny tekst źródłaChen, Yu. "Analyse InSAR des déformations de volcans actifs : le Piton de la Fournaise (Réunion) et Llaima (Chili)". Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30019.
Pełny tekst źródłaWe address in this dissertation the use of Interferometric Synthetic Aperture Radar (InSAR) to measure and characterize the ground surface deformation at two volcanoes - Piton de la Fournaise (La Réunion Island, France) and Llaima (Chile). For Piton de la Fournaise, we analyzed the spatial pattern and temporal evolution of the ground displacement between the historical March-April 2007 eruption and October 2014, based on continuous measurements recorded by GNSS stations and X band COSMO-SkyMed and TerraSAR-X/TanDEM-X time series analysis. For the processing of radar data, we adopted a classical InSAR time series approach that exploits the information redundancy in the interferograms and we implemented an original method for correcting artifacts based on the principal component decomposition. The spatial and temporal complexity of the obtained deformation field indicates that an important part of the volcanic edifice is affected by deformations of various origins that overlap spatially and temporally. We observe also subsidence processes that are not accompanied by horizontal displacements in recent lava fields. We show that there exists a linear relationship between the subsidence and the thickness of lava and that the amplitude of subsidence decreases with time. These relationships allow us to construct an empirical law to estimate the contribution of post-lava emplacement process in the deformation field. We also observe that the Central Cone subsides persistently during the study period. We interpret this subsidence as the expression of a relaxation of the stresses caused by the Dolomieu collapse during the March-April 2007 eruption. Finally, we show that a widespread time-dependent moving sector on the Eastern Flank is affected by downslope motion during the 2007-2014 period. The uncertainties on both the structure and rheology parameters of the edifice leads us to explore different hypotheses to explain the origin of this flank motion which could be controlled by the frictional properties of the rocks along one or more fault planes, or be the expression of a dependent ductile deformation of the viscosity of the medium. Llaima is a large Andean stratospheric volcano whose deformation processes are poorly understood not only because of the complexity of its functioning mode but also because of the absence of observation networks on the ground. In this context, the potential of radar data for monitoring the ground deformations of these volcanoes is a main scientific interest. However, the complex environment conditions (steep slopes, snow- or ice-capped summit, dense vegetation cover, and strong tropospheric artifacts) and limited amount of available radar data make it challenging to accurately measure ground displacement with InSAR
Vigny, Alexandre. "Query enumeration and nowhere dense graphs". Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC211.
Pełny tekst źródłaThe topic of my thesis lies between complexity, algorithmic and logic. In particular, we are interested in the complexity of evaluating query.More precisely, given G a finite graph. A query q defines a subset of k-tuples of vertices of G that we note q(G). We call k the arity of q and we then try to efficiently perform the following tasks:1) decide whether the set q G) is empty.2) decide whether a given k-tuplet belongs to the set of solutions q(G).3) calculate the number of solutions.4) enumerate the elements of q(G).Regarding the 4th task, an algorithm that will enumerate the solutions can be decomposed into two steps. The first is called preprocessing and is used to prepare the enumeration. Ideally this step only requires a time linear in the size of the graph. The second step is the enumeration properly speaking. The time needed to get a new solution is called the delay. Ideally we want the delay to not depend on the size of the graph but only on the size of the query. We then talk about constant delay enumeration after linear preprocessing.At the beginning of this thesis, a large part of the interrogations about classes of graphs for which a constant delay enumeration is possible seemed to be located around the classes of nowhere dense graphs
Benammar, Nassima. "Modélisation, évaluation et validation des systèmes temps réel distribués". Thesis, Poitiers, 2018. http://www.theses.fr/2018POIT2282/document.
Pełny tekst źródłaIn this thesis, we analyze networks in the context of distributed real-time systems, especially in the fields of avionics, with “Avionics Full DupleX Switched Ethernet” (AFDX), and automobile, with “Audio Video Bridging Ethernet” (AVB). For such applications, network determinism needs to be guaranteed. It involves, in particular, assessing a guaranteed bound on the end-to-end traversal time across the network fr each frame; and dimensioning the buffers in order to avoid any loss of frame because of a buffer overflow.There are several methods for worst-case delay analysis, and we have mainly worked on the “Forward end-to-end Delay Analysis” (FA) method. FA had already been developed for “First-In-First-Out” scheduling policy in the AFDX context, so we generalized it to any Switched Ethernet network. We have also extended it to handle static priorities and the AVB protocol, shaping policy named “Credit Based Shaper” (CBS). Each contribution has been formaly proved and experiments have been led on industrial configurations. For our experimentations, we have compared our results with the results of competing approaches. Finally, we have developed and formally demonstrated an approach for buffer dimensioning in terms of number of frames. This approach has also been tested on an industrial configuration and has produced tight bounds
Ndawinz, Jacques Deval Armstrong. "Estimation de l'Incidence de l'Infection par le VIH et autres Indicateurs de Surveillance de l'Épidémie du VIH : le cas de la France et du Cameroun". Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066179/document.
Pełny tekst źródłaA possible solution to eliminate the spread of the HIV epidemic is that people living with HIV (PLHIV) unaware of their HIV status (the hidden epidemic) are diagnosed and that all PLHIV have timely access to antiretroviral treatment (ART). That is why it is now recommended to put in place interventions combining early diagnosis of HIV and early initiation of ART. The objective of this thesis is to develop statistical methods to estimate indicators to identify, monitor and evaluate these interventions in different epidemic settings. Thus, a first back-calculation model combining HIV diagnosis data and changes in access to HIV screening is developed - with an application in France -to estimate the incidence of HIV infection, the duration between infection and HIV diagnosis and the size of the hidden epidemic. A multilevel analysis is implemented to identify risk factors associated with late ART initiation in Cameroon. A method based on multilevel models is proposed - with an application to Cameroon - to estimate two new indicators, the time between seroconversion and ART initiation and the delay between the theoretical time of ART eligibility and the effective time of ART initiation. A second back-calculation model more adapted to Africa countries is developed from data on PLHIV initiating ART - with an application in Cameroon - to estimate the incidence of HIV infection. This thesis proposes original methods to estimate the incidence of HIV infection and the time to HIV diagnosis or ART initiation
Chen, Yijing. "Nonlinear Control and Stability Analysis of Multi-Terminal High Voltage Direct Current Networks". Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112041/document.
Pełny tekst źródłaThis dissertation was devoted to the study of multi-terminal high voltage direct current (MTDC) networks. The main contributions were in the field of nonlinear automatic control, applied to power systems, power electronics and renewable energy sources. The research work was started with the intention of filling some gaps between the theory and the practice, in particular: 1) to investigate various control approaches for the purpose of improving the performance of MTDC systems; 2) to establish connections between existing empirical control design and theoretical analysis; 3) to improve the understanding of the multi-time-scale behavior of MTDC systems characterized by the presence of slow and fast transients in response to external disturbances. As a consequence, this thesis work can be put into three areas, namely nonlinear control design of MTDC systems, analysis of MTDC system's dynamic behaviors and application of MTDC systems for frequency control of AC systems
Despaux, François. "Modeling and evaluation of the end-to-end delay in wireless sensor networks". Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0100/document.
Pełny tekst źródłaIn this thesis, we propose an approach that combines both measurements and analytical approaches for infering a Markov chain model from the MAC protocol execution traces in order to be able to estimate the end to end delay in multi-hop transmission scenarios. This approach allows capturing the main features of WSN. Hence, a suitable Markov chain for modelling the WSN is infered. By means of an approach based on frequency domain analysis, end to end delay distribution for multi-hop scenarios is found. This is an important contribution of our approach with regard to existing analytical approaches where the extension of these models for considering multi-hop scenarios is not possible due to the fact that the arrival distribution to intermediate nodes is not known. Since local delay distribution for each node is obtained by analysing the MAC protocol execution traces for a given traffic scenario, the obtained model (and therefore, the whole end to end delay distribution) is traffic-dependant. In order to overcome this problem, we have proposed an approach based on non-linear regression techniques for generalising our approach in terms of the traffic rate. Results were validated for different MAC protocols (X-MAC, ContikiMAC, IEEE 802.15.4) as well as a well-known routing protocol (RPL) over real test-beds (IOT-LAB)
Some, Nibene Habib. "Modelling and estimating models of physician labour supply and productivity". Doctoral thesis, Université Laval, 2016. http://hdl.handle.net/20.500.11794/26894.
Pełny tekst źródłaMy thesis considers health-care policies that are designed to affect the supply of health services. Waiting times for health care are a major health policy concern in many industrialized countries. In Quebec, the median time between a referral from a general practitioner and an appointment with specialist was 7.3 weeks in 2012, compared to 2.9 weeks in 1993, despite increases in number of physicians over the same period. For policy makers contemplating such outcomes, it is of particular importance to understand the structure of physician labour supply and how it affects the supply of health services. I consider two main policies in this respect. First, I estimate how physicians react to monetary incentives and I use my estimates to consider how compensation policy can be used to determine the short-term supply of services. Second, I consider how physician productivity is affected by experience, through learning-by-doing, and I use my estimates to determine how many inexperienced physicians must be hired to replace a retiring experienced physician in order to keep the supply of services constant. My dissertation develops and applies economic and statistical methods to measure the reaction of physicians to monetary incentives and to estimate their productivity profiles (measuring how productivity varies with experience throughout a physician's career) using survey and administrative panel data on Quebec physicians. Our data contain information on the labour supply of each physician, the different types of services they produce and their prices. These data cover a period during which the Quebec government changed the relative prices of medical acts. I use a model-based approach to develop and estimate a structural model of physician behaviour with multitasking. In my model, physicians take the prices of different services as given and choose the number of hours they wish to work as well as how those hours are distributed across different services. The model generates an earnings equation that depends on the total hours worked and a price index that gives the marginal return to hours when hours are optimally distributed across services. The price index depends on the prices of services and technology parameters that determine how physicians react to changes in relative prices. I apply the model to panel data on payments to Quebec physicians matched to time-use data on the same physicians. I use the model to investigate two dimensions of the supply of health services. First, I look at the use of monetary incentives to induce physicians to alter their supply of different services. While previous studies have often sought to compare physician behaviour across different compensation systems, relatively little is known about how physicians respond to fee changes. Recent debates in Canadian health policy circles have focussed on the importance of income effects in determining the response of physicians to fee increases. My work contributes to this debate by identifying and estimating the substitution and income effects resulting from changes in the relative fees paid for services. Second, I look at how experience affects physician productivity. This has important implications for the hiring of physicians to meet increased demand from an ageing population, particularly when experienced physicians are retiring. First, I estimate the earnings function conditional on hours worked, using instrumental variables to control for the potential endogeneity of hours worked. As instruments, I use dummies of age, marginal tax rate, returns on market investments, its squared and cubed. I show that this provides a lower bound to the own-price elasticity of any particular service. This allows me to test if physicians respond to monetary incentives. I find that the lower bounds of own-price elasticities of services are positive and statistically significant, suggesting that physicians do respond to monetary incentives. A relative change in prices leads physicians to supply more of the services whose prices have risen. Second, I estimate the full model by explaining the variation in hours worked by physicians, the volume of services supplied, and individual earnings. I do so using a Simulated Method of Moment estimator. The results show that the own-price elasticities for services are large and positive, implying that the volume-increasing response of services to their own-price is strong. Cross-price elasticities are also large but negative. Furthermore, there is an income effect associated with fee increases. I use the structural model estimates to simulate the total effect of a recently observed price increase that was offered to physicians in Quebec, increasing the prices of all services by 32%. The results show that physicians would reduce their total hours worked (average elasticity of -0.02) and clinical hours worked (average elasticity of -0.07). They would also reduce the volume of services provided (average elasticity of -0.05). Third, I exploit the link between fee-for-service physicians'earnings and their productivity to estimate physician productivity profiles. To do so, I modify the specification of the modelto take into account the relationship between a physician's productivity and his/her experience. I estimate the earnings equation using an unbalanced panel dataset, correcting for non-randomly missing observations by estimating a selection model. The results suggest that productivity profiles are increasing concave functions of experience. Furthermore, the shape of the profile is robust to parametric assumptions. A one-year increase in experience increases the production of services by approximately 1,003 CAN dollars. I use the model estimates to calculate the replacement ratio: the number of inexperienced physicians needed
Delannoy, Yann. "Caractérisation de la diagénèse osseuse en anthropologie médico-légale : étude macroscopique, spectrométrique et histomorphologique". Thesis, Lille 2, 2016. http://www.theses.fr/2016LIL2S052/document.
Pełny tekst źródłaIntroduction: Determining the postmortem interval in cases of skeletonized remains is a key element of the judicial investigation. However, few methods are applicable for an accurate estimate of this period. This taphonomic study wanted to be performed in a temporality joining the legal requirements applied in forensics. Thus, the main hypothesis of this study was an early organic postmortem bone degradation, particularly a collagen degradation. The latter has been studied prospectively.Materials and Methods: 6 human bodies without known bone disease were included, and for each subject, the ribs were chosen. The bones were included in a diagenetic environment and studied over 2 years. Macroscopic analysis of bone weight loss was performed, and completed by two methods: one molecular (Raman microspectrometry) and the other morphological (histology).Results: This work has highlighted certain features of the temporary bone alteration on its different phases via: a desiccation highlighted by bone mass loss; a diagenesis of organic and mineral phases. Thus, the study of physicochemical parameters by Raman microspectrometry revealed a temporary trend of declining mineral / organic ratios; decreasing carbonation; increasing crystallinity. Multivariate analysis of Raman spectra allowed: to distinguish temporal groups by discriminating via their organic contributions; to design a statistical model of practical use. The microscopic study of the samples revealed no microbial attack in the early postmortem period, but an alteration of collagen by chemical hydrolysis.Discussion: Our study identified three basic parameters of bone diagenesis that must be known to the forensic anthropologist, even over a period of 2 years which is \\\"short\\\" on the scale of anthropology:- The environment strongly influences bone diagenesis and should be studied as well as the bone itself. Indeed, the study of weight loss of the bone, revealed a phenomenon of bone drying, similar to the overall dehydration of the body in the postmortem period;- Bone diagenesis is a global phenomenon in which the various alterations of inorganic and organic phases are interdependent and can be evaluated by Raman microspectrometry. Also its contribution in the analysis of the chemical degradation of the bone, Raman spectroscopy and statistical tools associated with it, allows the identification of diagenesis classes. These classes will require additional studies, eventually to be a practical support in dating a bone;- The organic alteration of the bone may be due to chemical or bacterial degradation, according to the environment and the postmortem period. Histology can make this distinction. On this period of study, the collagen degradation by chemical hydrolysis is predominant.Conclusion: These parameters form a structural unit, which is well known in archaeological anthropology, and is absolutely transposable in forensic practice if appropriate methodologies are developed. Research on this topic has an essential role as forensics can respond to legitimate requests from victims and their relatives towards justice
Peeters, Agnes. "Application of the Stimulus-Driven Theory of Probabilistic Dynamics to the hydrogen issue in level-2 PSA". Doctoral thesis, Universite Libre de Bruxelles, 2007. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210641.
Pełny tekst źródłaCes accidents sévères dépendent non seulement de défaillances matérielles ou d’erreurs humaines, mais également de l’occurrence de phénomènes physiques, tels que des explosions vapeur ou hydrogène. La prise en compte de tels phénomènes dans le cadre booléen des arbres d’événements s’avère difficile, et les méthodologies dynamiques de réalisation des EPS sont censées fournir une manière plus cohérente d’intégrer l’évolution du processus physique dans les changements de configuration discrète de la centrale au long d’un transitoire accidentel.
Cette thèse décrit l’application d’une des plus récentes approches dynamiques des EPS – la Théorie de la Dynamique Probabiliste basée sur les Stimuli (SDTPD) – à différents modèles de déflagration d'hydrogène ainsi que les développements qui ont permis cette applications et les diverses améliorations et techniques qui ont été mises en oeuvre.
Level-2 Probabilistic Safety Analyses (PSA) of nuclear power plants aims to identify the possible sequences of events corresponding to an accident propagation from a core damage to a potential loss of integrity of the containment, and to assess the frequency of occurrence of the different scenarios.
These so-called severe accidents depend not only on hardware failures and human errors, but also on the occurrence of physical phenomena such as e.g. steam or hydrogen explosions. Handling these phenomena in the classical Boolean framework of event trees is not convenient, and dynamic methodologies to perform PSA studies are expected to provide a more consistent way of integrating the physical process evolution with the discrete changes of plant configuration along an accidental transient.
This PhD Thesis presents the application of one of the most recently proposed dynamic PSA methodologies, i.e. the Stimulus-Driven Theory of Probabilistic Dynamics (SDTPD), to several models of hydrogen explosion in the containment of a plant, as well as the developed methods and improvements.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished
Doyon, Nicolas. "Analyse des bifurcations dans un modèle du flutter auriculaire". Thèse, 2003. http://hdl.handle.net/1866/14617.
Pełny tekst źródłaOuld, Biha Ahmedou. "Le choix de la date optimale des investissements irréversibles dans les projets pétroliers avec asymétrie d'information et incertitude : l'approche des options réelles". Mémoire, 2006. http://www.archipel.uqam.ca/3169/1/M9455.pdf.
Pełny tekst źródłaFortin, Israël. "Le collectif contrarié : analyse des manifestations du sujet national et de sa remise en cause dans l'oeuvre de Robert Morin". Thèse, 2015. http://hdl.handle.net/1866/13963.
Pełny tekst źródłaSince the end of the 18th century, the nation has asserted itself as one of the cornerstone institution of modernity. Its questioning, especially in the later decades of the last century, is at the same time symptomatic and partly responsible for the present erosion of the sense of collective identity. In Quebec, this phenomenon is also discernable, as the works of the filmmaker Robert Morin seem to suggest, with their cast of solitary characters frequently reduced to their own subjectivity. In this context, isolated individuals are trying with great urgency to revive the ties that bind them with their fellow men and women, but without much success. Thereby, in different ways, the concept of community appears in a nostalgic light, on the screen as much as in Morin’s ways of dealing with the medium, his practice being very influenced by those of the sixties and the seventies. As this thesis tries to suggest, the unbind subject which is represented in Morin’s works, torn between his awareness of aloneness and his desire to be part of a social community (whether national or not), experience this ongoing process of social erosion, while simultaneously trying to stop it.
Miedinger, David. "Durée de lʼexposition avec symptômes, séquelles et coûts de lʼasthme professionnel en relation avec le statut psychologique et socioéconomique". Thèse, 2012. http://hdl.handle.net/1866/7128.
Pełny tekst źródłaThe most important factor in the prognosis of occupational asthma (OA) is the length of exposure with symptoms prior to removal from exposure. Impaired quality of life, psychological distress and psychiatric disease are conditions frequently associated with OA. Our goal was to identify factors, including socio-economic status, that can influence the delay in submitting a claim to a medicolegal agency after the onset of asthmatic symptoms, and to confirm that such a delay is associated with a worse respiratory prognosis and higher direct costs. Further, we examined the association between clinical and socio-economic variables and their influence on psychological and cost outcomes in individuals with OA. Next, we wanted to evaluate whether individuals with clinically significant psychological distress (PD) and psychiatric morbidity could be identified by using a quality of life (QOL) measurement instrument. This is a study of individuals who filed claims for compensation for occupational asthma from the Workersʼ Compensation Board of Quebec (the CSST). Data were collected at re-evaluation, approximately two and a half years after diagnosis. Besides collecting clinical markers of asthma, individuals underwent a general socio-demographic and medical history evaluation, a brief psychiatric interview (Primary Care Evaluation of Mental Disorders, PRIME-MD) and completed a battery of questionnaires, including the Asthma Quality of Life Questionnaire - AQLQ(S), the St. Georgeʼs Respiratory Questionnaire (SGRQ), and the Psychiatric Symptoms Index (PSI). Sixty individuals were included in the study. Being older, having a revenue of >$30,000 Can. (CAD$) and having OA due to high- molecular- weight agents were all positively associated with the number of years of exposure with symptoms before removal from exposure. Individuals with persistent airway hyperresponsiveness at follow-up had a higher number of years with symptoms. Experiencing symptoms in the workplace for less than one year generated lower direct costs. QOL and PD parameters had moderate correlations with clinical markers of OA. Asthma severity, employment and marital status, income and length of employment with the employer showed the strongest associations with QOL and PD. More impaired QOL was associated with higher direct costs for compensation. A cut-off of 5.1 on the AQLQ(S) emotional function subscale had the best discriminative value to distinguish individuals with or without clinically significant psychological distress according to the PSI. We were able to identify socio-economic variables that were associated with a longer interval during which individuals remained symptomatic in the workplace before being removed from exposure. This longer exposure time was associated with worse disease outcomes and higher compensation costs. These findings could prove to be useful in surveillance programs that could be preferentially targeted for these subgroups of individuals. Impaired QOL and PD are frequent among individuals with OA receiving compensation and are associated with clinical markers of OA and socio-economic factors. Further, our findings suggest that the AQLQ(S) questionnaire could be used to identify individuals with potentially clinically significant levels of psychological distress.
Landry, Maude. "La fécondité des Indiennes inscrites en fonction du traité historique d’affiliation". Thèse, 2017. http://hdl.handle.net/1866/19079.
Pełny tekst źródłaThis research aims to document the fertility of registered Indians in Canada in relation to their affiliation with historic treaties. The historic treaties are legal agreements, between the government of Canada and certain members of the First Nations, which describe lands surrendered and related compensation. Although the treaties have mainly a legal role, they apply to Indigenous peoples sharing similar characteristics along cultural, linguistic, socioeconomic, territorial and historical lines. We used anonymized data extracted from the Indian Register to produce the total fertility rate (TFR) for the population concerned by each historic treaty for the periods 1994-1998, 1999-2003 and 2004-2008. We wanted to know if the fertility of registered Indians differed by treaty memberships, if we observed changes over time and if notable trends could be identified depending on the regions covered by the treaties. Our analyses show that important differences exist, particularly between the numbered treaties, which cover the Prairies provinces, and the treaties populations of Eastern Canada. Since the data collected by the Indian Register do not contain information on social, cultural and economic characteristics of Indigenous peoples that could explain these differences, it is not possible to develop precise explanations of these variations. However, it is possible to propose an association between the fertility rate and the geographical and historic aspects of the treaties populations.