Дисертації з теми "Système à sortie binaire"
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Goudjil, Abdelhak. "De l'identification des systèmes (hybrides et à sortie binaire) à l'extraction de motifs." Thesis, Normandie, 2017. http://www.theses.fr/2017NORMC240/document.
Повний текст джерелаIn this thesis, we deal with the identification of systems and the extraction of patterns from data. In the context of system identification, we focus precisely on the identification of hybrid systems and the identification of linear systems using binary sensors. Two very popular classes of hybrid systems are switched linear systems and piecewise affine systems. First, we give an overview of the different approaches available in the literature for the identification of these two classes. Then, we propose a new real-time identification algorithm for switched linear systems, it's based on an Outer Bounding Ellipsoid (OBE) type algorithm suitable for system identification with bounded noise. We then present several extensions of the algorithm either for the identification of piecewise affine systems, the identification of switched linear systems described by an output error model and the identification of MIMO switched linear systems. After this, we address the problem of the identification of linear systems using binary sensors by introducing an original point of view. We formulate the identification problem as a classification problem. This formulation allows the use of supervised learning algorithms such as Support Vector Machines (SVMs) for the identification of discrete time systems and the identification of continuous-time systems using binary sensors. In the context of pattern extraction, we first present an overview of the different pattern extraction algorithms and clustering techniques available in the literature. Next, we propose an algorithm for extracting patterns from data based on clustering techniques
Oualla, Hicham. "Contributions à l'identification en boucle ouverte/fermée des systèmes à base de données binaires." Electronic Thesis or Diss., Normandie, 2022. http://www.theses.fr/2022NORMC229.
Повний текст джерелаThis thesis is devoted to the identification of systems based on binary data. First, a brief presentation of all the methods of identification of systems based on the use of binary data existing in the literature is given. In the following, we are interested in the problem of open loop identification of systems with binary output and input. We propose methods for the identification of FIR systems and more complex IIR systems with binary input and output. These methods are analyzed and tested by numerical examples. In the rest of this work, we propose first solutions to the problems of closed-loop identification of systems based on binary data. The first solutions are dedicated to binary output systems, the closed loop excitation is assumed to be high resolution. Finally, two methods are proposed for closed loop systems with binary output and input. These solutions are tested on numerical examples to quantify their performances
Davidenko, Tatyana. "Hydratation d'un système cimentaire binaire contenant des cendres volantes de biomasse." Thèse, Université de Sherbrooke, 2015. http://hdl.handle.net/11143/6988.
Повний текст джерелаAbstract : The use of wastepaper sludge ash (WSA) represents a very promising solution for ecological high performance concrete design. However, the effect of WSA on cementitious systems properties is still insufficiently studied. The present project intends to understand the hydration process in Portland cement systems containing locally available WSA. The experimental program begins with characterization of WSA physico-chemical properties. Then, the effect of WSA on rheology, hydration kinetics, hydration products evolution over time and strength development in cement blends is investigated. The systems discussed here are cement pastes and mortars with different cement replacement by WSA ratio and two water to binder ratio (0,5 and 0,4) with and without superplasticizer. The variation of physico-chemical properties (fineness; free lime, sulphate and calcite content) between different WSA samples was used to determine the effect of each of these parameters on blended cement performances. Partial cement replacement by WSA leads to changes in rheology, hydration kinetics, composition of the hydrates and microstructure of hydrated pastes. Moreover, some incompatibility problems between WSA and superplasticizers used are observed. Based on experimental results analysis, the explanations of the phenomena taking place in cement systems containing WSA are proposed.
Kadok, Joris. "Le système binaire aluminium-iridium, du diagramme de phases aux surfaces atomiques." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0202/document.
Повний текст джерелаA complex metallic alloy (CMA) is an intermetallic compound whose unit cell contains a large number of atoms oftenly forming highly-symmetric clusters. From the complexity of these compounds can arise physical and chemical properties interesting for various fields of application. The aluminium-iridium binary system exhibits numerous intermetallic compounds of which half of them are actually CMAs. Despite this system being extensively studied in the literature, some uncertainies remained unsolved, leading us to reinvestigate the Al-Ir phase diagram. In addition, the "push-pull" systems Al-Au-Ir and Al-Ag-Ir, favorable for the formation of CMA according to the literature, have been explored. Thus, near a hundred of samples have been prepared by arc-melting before being analyzed with different characterizations techniques: X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and differential thermal analysis (DTA). From this study, 4 new intermetallic compounds could be identified: Al2.4Ir, Al72Au2.5Ir29.5, Al3AuIr and Al11SiIr6, the latter being the result of a fortuitous manipulation. The crystallographic structure of each of these compounds has been solved, revealing Al2.4Ir and Al72Au2.5Ir29.5 to be two CMAs with around one hundred of atoms in their unit cell. Calculations based on the density functional theory (DFT) brought further details about the stability of the two other Al3AuIr and Al11SiIr6 compounds. In the Al-Ir binary system, a structural variant of two well-known CMAs has been also unveiled. The crystallographic structures of the Al2.75Ir and Al28Ir9 variant have been approached, revealing 240 and 444 atoms in their respective unit cell. The CMAs oftently exhibit interesting surface properties. In order to study the Al-Ir compound surfaces, iridium adsorption on Al(100) surface followed by annealing has been investigated. The characterizations by lowenergy electrons diffraction (LEED), X-ray photoelectron spectroscopy (XPS) and scanning tunneling miscoscopy (STM) supported by ab initio calculations revealed that, from 320 C, the Al9Ir2 compound is formed at the surface but also in the substrate bulk
Poujade, Olivier. "Itération post-newtonienne du champ de gravitation d'un système isolé en relativité générale : application au cas d'un système binaire d'étoiles étendues." Paris 7, 2002. https://tel.archives-ouvertes.fr/tel-00002179v2.
Повний текст джерелаAbdelatif, Radhia. "Etude de plusieurs problèmes de dénombrement liés à la numération binaire." Paris 6, 1986. http://www.theses.fr/1986PA066100.
Повний текст джерелаMarchetti, Franck. "Contribution à la classification de données binaires et qualitatives." Metz, 1989. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1989/Marchetti.Franck.SMZ897.pdf.
Повний текст джерелаWe propose several clustering methods which are specific of binary and categorical data. Each time, we try to keep to the initial data structure. These methods supply partition optimising criteria defined with absolute value distance or L1 distance. The advantage of this approach is to give results easy to interpret in regard of initial data. Then, we define an inertia on binary space. This binary inertia behaves as an ordinary inertia : a relation of the Huyghens type and a relation of decomposition of the inertia are demonstrated. The clustering method and the crossed clustering method for binary data could be replaced in a more usual context. They respectively optimise an inertia criteria and a measure of information. An agglomerative hierarchical method for binary data is also proposed. Then, we studied a principal components analysis for binary data. This analysis, which is defined with binary factors, can be used to find homogeneous submatrix. Every methods proposed here have been programmed and integrated in SICLA system
Ait, Mansour El Houssain. "Numérisation rapide d'un système synchronisé en sortie d'antennes multi-réparties tel que le Radiohéliographe de Nançay." Thesis, Paris Sciences et Lettres (ComUE), 2018. http://www.theses.fr/2018PSLEO001/document.
Повний текст джерелаThe Nançay Radioheliograph is the only instrument dedicated to the solar corona imaging in the 150-450 MHz frequency band. It operates on the principle of interferometry, using 47 antennas essentially distributed on the east-west (3.2 km) and north-south (2.5 km) axes. This study aims to explore a new technical concept for future radio astronomy, applied to solar interferometer. It deals with the rapid digitization of a synchronized system at the antenna sides. High speed digitization and high accuracy synchronization are the most important aspects for future radio telescopes. They make it possible to simplify radiofrequency reception chains and reduce their power consumption, as well as maintenance costs and complexity. The application to the observation of the sun, however, has some original constraints, such as the great dynamics of the signals, which are not taken into account in the current studies for future radio telescopes. The current radio telescope has an analog receiver with a centralized digitization. The switching time between each frequency (10 frequencies of 1 MHz width) in 150-450 MHz band analyzed introduce latency in solar images processing, also decrease the signal-to-noise ratio. In addition, in metric interferometry, the several lengths of coaxial cables in which the signal is transported from the antennas to the receiver always cause significant errors and fluctuations in the radiofrequency reception chains. Providing full digitization of the band (300 MHz) allows more flexibility in data processing and analyzing (frequency resolution and the ability to observe multiple bands simultaneously). This required high clock accuracy (0.7 ps of jitter) for ADCs clocks (1 GHz clock). Therefore, the main objective of this thesis is to reach a sub-ns global time synchronization of distributed networks such as radio interferometer array as the Nançay Radioheliograph. The technological leap thus induced is a growing challenge in major European and international projects
Cuvelier, Hervé. "Une approche de la localisation de l'information appliquée à la reconnaissance du courrier manuscrit." Vandoeuvre-les-Nancy, INPL, 1988. http://www.theses.fr/1988NAN10349.
Повний текст джерелаGhaoui, Jade. "Modélisation de la formation de motifs périodiques dans un système eutectique binaire formant un corps igné." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/33149.
Повний текст джерелаRoques, Martine. "Les conditions psycho-sociales de la sortie du chômage : réorganisation du système des activités en situation de transition." Toulouse 2, 1991. http://www.theses.fr/1991TOU20009.
Повний текст джерелаThe topic of this study is based on the question : which are the psychological and psychosociological conditions in getting out of unemployment. These conditions had been partly described by studies interested in psychological effects of unemployment. These studies have shown that : 1) unemployed have a lower psychological well-being tha employed (functionalist point of view); 2) the impact of unemployment is not the same for all individuals (differencialist); 3) this impact is not linear according to the length of unemployment (genetic point of view). However, the segmented approach prevailing in these studies doesn't allow us to acceed to a complet comprehension. A new model is proposed, allowing us analysing individual's reazctions in the global functioning of activity system. A longitudinal analysis based on a period of 19 months and 5 observations allows us to obtain 3 sub-groups, each caracterising one level of the variable to explain : how people getting out of unemployment. The data analysis shows that the rapidity with which an individual getting out of unemployment is due to the global functioning of the activity system. The sub-group a, composed by the subjects who getting out of unemployment after 7 months, show ahigh activity level and a synergy between the professionnal and social activities. The sub-group b, composed by the subjects getting out of unemployment after 11 months, cope with the perturbation by the activity intersignification. Sub-group c (subjects are unemployed for 19 months)
Aman-Pommier, Fabrice. "Solubilité d'un principe actif hydrophobe modèle dans un système de solvant binaire d'intérêt pour la lyophilisation industrielle." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1220/document.
Повний текст джерелаThe aim of this work is to investigate the solubility behavior of a hydrophobic model drug, diazepam, in a binary solvent of industrial interest for freeze-drying, the water + tert-butyl alcohol mixture. Firstly, a model describing the dependence of the excess volume of the solvent on both composition and temperature was validated from experimental data obtained during this work and literature data. This model was used to derive expressions for excess partial thermodynamic quantities and their variations with respect to composition and temperature were discussed in terms of molecular interactions and structural arrangements in solution. Secondly, the solubility of diazepam in neat solvents and different binary solvent mixtures was determined. The density of drug-saturated mixtures was also determined as well as the thermophysical properties of original diazepam crystals and excess solid phases from solid-liquid equilibria. The thermodynamic properties relative to the dissolution process of the drug under saturation condition were obtained from solubility temperature dependence using van’t Hoff plots. From these, the excess partial thermodynamic properties of diazepam in saturated mixtures were computed and the forces driving the drug solubility variation with respect to the solvent composition were identified. Finally, two excess Gibbs energy models, the Scatchard-Hildebrand and combined Scatchard-Hildebrand/Flory-Huggins models were tested to represent the solubility data. Their capabilities in correlating the dependence of the drug solubility on both the solvent composition and temperature were evaluated and compared
Amararene, Amar. "Conception et realisation d'un velocimetre ultrasonore de precision : application a la caracterisation de liquides complexes." Paris 5, 1998. http://www.theses.fr/1998PA05S014.
Повний текст джерелаPépin, Christian. "Étude du comportement de l'indice de réfraction d'un mélange liquide binaire au point critique (système acide isobutyric-eau)." Thèse, Université du Québec à Trois-Rivières, 1985. http://depot-e.uqtr.ca/6629/1/000554662.pdf.
Повний текст джерелаDucrot, Marine. "Etude des cavités optiques de filtrage de sortie du détecteur d'ondes gravitationnelles Advanced Virgo." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAY046/document.
Повний текст джерелаAbout 100 years after their prediction by Albert Einstein gravitational waves produced by the coalescence of two black holes were observed on the 14th of September 2015, opening the field of gravitational wave astronomy and a new way to study gravitation. The small amplitude of gravitational waves requires specific and very sensitive detectors. Advanced Virgo is a second generation kilometric interferometer dedicated to the detection of gravitational waves. A necessary element to reach the required sensitivity is the filtering optical system named the Output Mode Cleaner or OMC, placed at the output of the interferometer, and composed of two optical cavities. This thesis shows the study and characterization of this optical system. This work informed the selection of the two optical cavities actually installed in the Advanced Virgo detector. The filtering performances and impact of the OMC on the detector sensitivity are also described
Teppoz, Laurent. "Commande d'un système de conversion de type VSC-HVDC. Stabilité - Contrôle des perturbations." Phd thesis, Grenoble INPG, 2005. http://tel.archives-ouvertes.fr/tel-00168414.
Повний текст джерелаplus en plus considérés dans une transmission de puissance et les convertisseurs fonctionnant
en source de tension (VSC) peuvent offrir des degrés de liberté supplémentaires, d'un intérêt
particulier dans la conception d'une commande.
Dans notre étude, les lois de commande sont synthétisées en temps discret et en appliquant
le principe de linéarisation entrée-sortie. Elles ont principalement pour objectifs de stabiliser
la puissance qui transite, d'assurer la régulation de la tension du bus continu et d'obtenir des
facteurs de puissance qui soient, au niveau de la source et de la charge, les plus élevés possible.
Pour pouvoir exploiter en pratique les commandes, il est nécessaire de les associer avec des
observateurs. Du fait que géographiquement la source de puissance et la charge sont situées de
part et d'autre d'une ligne de transmission, l'enjeu ultime de l'observation est la possibilité de
décentraliser les lois de commande. Cette décentralisation implique d'émettre des hypothèses
sur le comportement de ces deux éléments. Celles-ci font l'objet d'une étude approfondie.
Ainsi, dans cette thèse, nous développons une méthodologie de commande qui est systématique
pour les systèmes HVDC intégrant des convertisseurs VSC.
Baba, Aïssa Hind. "Anatomie et physiologie des voies de sortie du cervelet chez le rongeur." Thesis, Université Paris sciences et lettres, 2021. http://www.theses.fr/2021UPSLE018.
Повний текст джерелаAccurate sensory acquisition and perception are key features to survival. Though many parameters underlying the processing of sensory information is known, several aspects are still poorly understood, such as the exact contribution of each cerebral structure. Here, we analyze the cerebellar contribution to sensory processing in the mouse whisker system. We identify an anatomical and physiological disynaptic projection from the cerebellar nuclei to the primary sensory cortex, involving notably by the posterior medial thalamus (POm). The modulation of this strong driver-like cerebello-thalamic projection induces an impairment in a fine sensory discrimination task, and its co-activation along with peripheral inputs induces the increased recruitment of POm projections to layer I of sensory cortex. Taken together, our results show that the cerebellum targets non-motor cortical areas and can directly modulate sensory processing through a higher order thalamic nucleus, the POm
Tougas, Kim. "Sortir de prison : l’expérience des hommes adultes en maison de transition dans la région de l’Outaouais." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/41252.
Повний текст джерелаBenabdallah, Feres. "Evolution des propriétés diélectriques, ferroélectriques et électromécaniques dans le système pseudo-binaire (1-x)BaTi0.8Zr0.2O3- xBa0.7Ca0.3TiO3 / Corrélations structures et propriétés." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2013. http://tel.archives-ouvertes.fr/tel-00879222.
Повний текст джерелаFaravelon, Antoine. "Accélération des accès mémoire dans la traduction binaire dynamique." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAM050/document.
Повний текст джерелаIn this thesis we are interested in the acceleration of memory accesses in dynamic binary translation.For this, we base ourselves on methods whose main purpose is to manage the target's address space with the host's hardware.Two main methods for this have been explored, one based on hardware assisted virtualization, and the other on a Linux module.In the case of hardware assisted virtualization, we used the simulator as a specific guest.This one playing a role similar to that of an OS, in addition to its role of simulator, for the target.In particular, it is responsible for creating an enmbedded address space that can be used directly, without software simulation of an MMU.In the case of a method based on a Linux module, the same purpose is pursued.But the simulator continues to operate as a normal process.On the other hand, it now has a companion module, with which it can communicate through ioctl.This module is responsible for manipulating the host's virtual memory management to create an embedded address space for the target.These methods have been implemented in Qemu and Linux and lead to significant performance gains
Courchinoux, Roger. "Alliages moléculaires en série trisubstituée du benzène : réflexion sur la syncristallisation organique." Bordeaux 1, 1988. http://www.theses.fr/1988BOR10612.
Повний текст джерелаRico, Fabien. "Fonctions élémentaires : algorithmes et précisions." Montpellier 2, 2001. http://www.theses.fr/2001MON20052.
Повний текст джерелаKoliaï, Souad. "Approche statique et dynamique pour l'évaluation de performances de codes scientifiques." Versailles-St Quentin en Yvelines, 2011. http://www.theses.fr/2011VERS0010.
Повний текст джерелаCurrent hardware tends to increase pressure on programmers to optimize the codes. The complexity of modern architectures makes it more difficult to understand the behavior of the programs running on them. Moreover, the compilers apply aggressive optimizations which makes the compiled code more difficult to understand. This increasing complexity shows that there is still a need of performance analysis to help the programmers. Different tools and techniques exist, but no single tool is a panacea; instead, different tools have different strengths. This thesis proposes two different and complementary tools for performance analysis on binary code. The first tool, Maqao’s static analysis, performs a static evaluation of the performance of the code, and gives an estimate of the quality of the code, such as the vectorization ratios. The second tool, Decan, is a new approach of performance analysis that targets the memory instructions to pinpoint the set of instructions responsible of the poor performance. Both tools are combined to propose a semi-automated methodology for performance evaluation
Plateau, Florence. "Modèle n-synchrone pour la programmation de réseaux de Kahn à mémoire bornée." Paris 11, 2010. http://www.theses.fr/2010PA112080.
Повний текст джерелаIn this thesis, we are interested in models and languages to program stream processing applications with real-time constraints, such as multimedia applications. They manipulate infinite data flows, on which they apply successive operations. These systems can be represented by Kahn Process Networks. In this model, computation nodes are executed concurrently and communicate through unbounded buffers. It has the advantage of being deterministic and yet allowing to express the intrinsic parallelism of applications. Nevertheless, it does not guarantee that the system is deadlock free and that it can be executed with bounded memory. Dataflow Synchronous Languages are a simple framework to program Kahn Process Networks without buffers. They offer strong guarantees on memory bounds and absence of deadlocks. The downside of these guarantees is a lack of flexibility in the composition of flows: communication must be done synchronously, that is without buffers. The n-synchronous model is an extension of the synchronous model that relaxes the synchronous constraint in a controlled way. It allows a more flexible composition while preserving static guarantees given by synchronous languages. We present a n-synchronous language and we focus on the analysis which statically checks that a program can be executed with bounded buffers and automatically computes those sizes
Macedo, Portela da Silva Nayane. "Développement d’un système micro/millifluidique sous pression pour l’étude et la mesure de propriétés d’écoulement diphasique : application au binaire CO2 supercritique - BMimPF6." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2014. http://www.theses.fr/2014EMAC0003/document.
Повний текст джерелаThe present work deals with the study of two-phase flow in micro-capillaries under high-pressure to enhance properties measurements. As a first step, an experimental setup consisting of a micro-device has been developed for microfluidics high-pressure applications (P < 25 MPa). The set-up combines good optical access, high-pressure resistance, homogeneous operating conditions, fast process control and detection, and the ability to generate a stable two-phase flow. In the following step, we focused our work on the hydrodynamics features of two-phase flow between supercritical carbon dioxide(SC-CO2) and ionic liquid (1-butyl-3-methyl-imidazolium hexafuorophosphate) ([BMIm][PF6]) .The two-phase flow system is observed with a high-speed camera. The flow is conducted in silica capillary tubing with inner diameter of 536 micrometers. Among the two-phase flow patterns, ours relates to Taylor flow. The range of operating conditions are : [308 K - 318 K] x [9 MPa - 18 MPa]. An image analysis home-made soft, « μcap2phase », has been developed in order to access to the geometric properties and to the velocities of the dispersed phase from images. The two-phase flow presents an unexpected behaviour. In fact, the unidirectional transfer of SC-CO2 in [BMIm][PF6] induces significant changes in physico-chemical properties of continous phase : viscosity decreases(divided by ten) and density increases (1.5 fold). Due to the wide variations of the continuous phase properties along the capillary, size and shape of the dispersed phase bubbles are simultaneously modified. A significant slip velocity has been indentified located between a thick liquid film (at the wall of capillary) and a Taylor flow region (at the center). A mass transfer taking into account some experimental observations (changes in film thickness, in bubble size, and in properties of the continuous phase throughout the capillary) is developed. Further, this model will integrate the interfacial tension between bubbles and continous phase
Watbled, Ludivine. "Impact des dispositifs techniques sur l'activité de production, transmission de courriers de sortie d'hospitalisation." Thesis, Lille 2, 2018. http://www.theses.fr/2018LIL2S013/document.
Повний текст джерелаIn today’s society, technical devices are expected to increase the quality and speed of task execution. The healthcare field is no exception. Healthcare establishments are investing heavily in technical devices capable of achieving certain performance objectives. When France’s High Commission for Healthcare (Haute Autorité de Santé) recommended that discharge letters should be sent out more rapidly, hospitals digitized the production and dispatching of this document. However, none of the hospitals planned ahead of time for potential negative effects of the digitization of discharge letter production (longer delays, for example). In fact, one can legitimately question whether technical devices improve discharge letter production. This matter is especially important because discharge letters ensure continuity of care and the patient’s safety.We therefore sought to determine the effect of technical devices on the speed of discharge letter production and dispatching. To address this question, we studied the work situation as a whole (i.e. technical devices, organizations, stakeholders, and their interactions) using a human factors approach. Our starting hypothesis was as follows: it is difficult to accurately interpret scientific studies of the effects of these devices without taking account of and understanding technical, organizational and stakeholder-related characteristics that are rarely described in the literature.To address the research question, we identified and described all the technical, organizational and stakeholder-related characteristics, and analyzed their effects on the speed of discharge letter production and dispatching. We first considered using the IPAQSS data that French public-sector hospitals have to collect. However, we had to exclude this variable from our research because it is not valid and does not adequately reflect reality. We therefore decided to measure the time intervals at each step in the letter production/dispatching process, in order to be as close as possible to the true situation and thus answer our research question. We performed statistical analyses on a total of 440 letters generated by seven departments at Lille University Medical Centre.Our main results showed that a digital device does not necessarily accelerate thesteps in discharge letter production; it is essential to focus on the device'stechnical characteristics when seeking to determine whether or not production isfaster.Moreover, the time intervals for the steps vary as a function of contextual variables (i.e. organizational and stakeholder-related factors) and not just under the influence of the technical device per se.Furthermore, our results showed that knowledge of the work context enables one to interpret the data obtained. This knowledge makes it possible to modify technical, organizational and stakeholder-related factors and achieve the objectives set by hospitals and institutions. Our human factors approach generated a methodology for helping hospitals and institutions to check whether a technical device can achieve the expected objectives, i.e. by monitoring the influence of the above-mentioned variables on the device’s effect
Chouinard, Patrick. "Conception et fabrication d'actionneurs en polymère diélectrique bistables et antagonistes." Mémoire, Université de Sherbrooke, 2010. http://savoirs.usherbrooke.ca/handle/11143/1565.
Повний текст джерелаAbdull, Aziz Manaf. "Etude d'algorithmes de réduction de bases de réseaux et problème du sac à dos." Aix-Marseille 2, 1994. http://www.theses.fr/1994AIX22018.
Повний текст джерелаMillo, Jean-Vivien. "Ordonnancements périodiques dans les réseaux de processus : Application à la conception insensible aux latences." Phd thesis, Université de Nice Sophia-Antipolis, 2008. http://tel.archives-ouvertes.fr/tel-00507498.
Повний текст джерелаTlich, Mohamed. "Augmentation des performances des systèmes DSL par allocation dynamique de spectre." Phd thesis, Télécom ParisTech, 2006. http://pastel.archives-ouvertes.fr/pastel-00001889.
Повний текст джерелаGrolier, Liliane. "Le programme de médicalisation du système d'information : de la théorie à la pratique, à propos de sa mise en place au Centre hospitalier régional La Meynard (Centre hospitalier régional universitaire de Fort de France, Martinique)." Bordeaux 2, 1989. http://www.theses.fr/1989BOR23042.
Повний текст джерелаJiang, Zhong-Ping. "Quelques resultats de stabilisation robuste. applications à la commande." Phd thesis, École Nationale Supérieure des Mines de Paris, 1993. http://pastel.archives-ouvertes.fr/pastel-00838279.
Повний текст джерелаLecourt, Stephen. "Secteurs manufacturiers dans le système communautaire d'échange de quotas d'émissions." Phd thesis, Université Paris Dauphine - Paris IX, 2014. http://tel.archives-ouvertes.fr/tel-01070087.
Повний текст джерелаMerzouk, Khalil. "ÉTUDE D'UN SYSTÈME BAS COÛT DE TRANSMISSION OPTIQUE PAR MULTIPLEXAGE TEMPOREL." Phd thesis, Grenoble INPG, 2008. http://tel.archives-ouvertes.fr/tel-00348066.
Повний текст джерелаBernard, Florent. "Étude des algorithmes arithmétiques et leur implémentation matérielle." Paris 8, 2007. http://octaviana.fr/document/135519187#?c=0&m=0&s=0&cv=0.
Повний текст джерелаModular multiplication is the main operation in most of asymmetric cryptography protocols (Diffie-Hellman key exchange, RSA, ECDSA). Thus hardware implementation of this operation needs attention. In this work, we propose a hardware implementation of modular multiplication for an ASIC target. We consider two levels of scalability : - Implementation must fit any chip area - Design must be reused for different sizes of moduli. After an algorithmic study we show why Montgomery algorithm is preferred. Then this algorithm is studied in details in order to proceed at its hardware implementation. Strategy used for implementation consists in minimizing the number of kinds of elementary operation in the algorithm. Then we obtain a family of scalable hardware improving time-area tradeoffs in comparison to previous scalable hardware. Then considering the hardware developed as a "black-box", we show how to perform modular reduction with this hardware. We also study how to add an additive countermeasure against DPA attacks with a slow extra-computational time (less than 5%). Finally, a Montgomery algorithm using Fourier representation is studied with an asymptotic cost in O(nlog(n)) but inefficient for practical application
Lecourt, Stephen. "Secteurs manufacturiers dans le système communautaire d’échange de quotas d’émissions." Thesis, Paris 9, 2014. http://www.theses.fr/2014PA090021/document.
Повний текст джерелаThe thesis focuses on the aggregated non-power sector covered under the EU ETS. First, the non-power sector contribution to CO2 emissions changes in the first two phases of the Scheme (2005-2012), both from a final demand perspective and a supply perspective, is compared to that of the power sector at first. Then, the implications of the non-power sector specific free allocation methodology in the third phase of the Scheme (2013-2020) are scrutinized, which constitutes one of the first thorough assessment of Phase 3 benchmarking. It is showed that both from a final demand perspective and a supply perspective, the non-power sector, through its interrelated character and its activity levels, has contributed to changes in EU ETS CO2 emissions more than the power sector did, over the 2005-2012 period. It is also showed that, despite its free allocation redistribution effects, benchmark-based Phase 3 free allocation remains flawed and may benefit from further improvements to be up to the central role of the non-power sector in the EU ETS dynamics
Khelfi, Mohamed Fayçal. "Observateurs non linéaires : application à la commande des robots manipulateurs." Nancy 1, 1995. http://www.theses.fr/1995NAN10364.
Повний текст джерелаRammal, Rim. "Caractérisation des sorties plates pour le diagnostic de systèmes entiers ou non entiers : application pour le diagnostic d’un système hydraulique et d’un système thermique." Thesis, Bordeaux, 2021. http://www.theses.fr/2021BORD0021.
Повний текст джерелаThe differential flatness is a property of dynamic systems that allows the transformation of a very complex system into a simpler one called flat system. Roughly speaking, a dynamic system is said to be flat if, and only if, there exists a vector, called flat output vector and formed by the state and input variables, such that all the system states, inputs and outputs can be expressed in function of this new vector and its successive time derivatives. The differential flatness property has many applications in automatic control theory, such as trajectory planning, trajectory tracking and the designing of robust controllers. Moreover, the flatness property has recently entered the field of fault detection and isolation. In short, fault detection and isolation is a sub-domain of automatic control engineering that deals with monitoring a system, identifying when a fault has occurred, and determining the type of fault and its location. Fault detection is performed by analyzing the difference between sensor and actuator measurements and their expected values, derived from any model and called redundant values. It is common to say that an error is detected if the deviation or residue exceeds a certain predefined threshold. Fault isolation, in turn, must make it possible to locate the fault in the machine. The most recent method of fault detection and isolation, based on the flatness property, calculates redundant variables from the measurement of the flat output of the system and its successive time derivatives. Then, the residues are deduced from the difference between the measured variables and the redundant variables. Fault detection by this method is guaranteed. However, the use of a single flat output does not allow, in some cases, to isolate some faults. The idea proposed by the developers of the method was to use several flat outputs to increase the number of the residual signals, which would increase the chances of isolating more faults. However, it was also noticed that the choice of these flat outputs is not arbitrary. That is, there are flat outputs that, when used together, increase the isolability of faults and others that do not. One of the objectives of this manuscript is to characterize the flat outputs in order to obtain a better fault isolability. This characterization is then verified by simulations and experiments on a hydraulic system, the three-tank system.Over the last decade, numerous studies have shown that there are systems such as thermal systems, viscoelastic systems and chemical systems that can be modeled by fractional differential equations. Therefore, classical methods of fault detection and isolation, originally developed to deal with integer order systems, were not suitable for fractional order systems, and fault detection and isolation methods specific to fractional order systems had to be developed. A second objective of this manuscript is to extend the characterization of flat outputs, proposed for the class of integer order flat systems to the class of fractional order linear flat systems, and then to apply this characterization to the detection and isolation of faults that may appear on the sensors and actuators of these systems. The effectiveness of this characterization is also verified by simulations on a bi-dimensional thermal system
Le, Ber Catherine. "Simulation sur ordinateur d'un système linéaire continu et stationnaire." Brest, 1988. http://www.theses.fr/1988BRES2020.
Повний текст джерелаPerricone, Aurélie. "Synthèses, structures cristallines et propriétés magnétiques de nouveaux composés intermétalliques dans le système binaire U-Ni et les systèmes ternaires U-Ni-X (X ; Ge, Si, Al)." Rennes 1, 2002. http://www.theses.fr/2002REN10024.
Повний текст джерелаHamelin, Jean. "Étude du comportement de la constante diélectrique et de la conductivité électrique d'un mélange liquide binaire à proximité de son point critique de démixtion (système nitroéthane-3méthylpentane)." Thèse, Université du Québec à Trois-Rivières, 1990. http://depot-e.uqtr.ca/5525/1/000584295.pdf.
Повний текст джерелаCoeffier, Claude. "Étude de la commande de traction dans les entrainements de bande de métal." Vandoeuvre-les-Nancy, INPL, 1992. http://www.theses.fr/1992INPL061N.
Повний текст джерелаGastaud, René. "Mise au point d'un système de traitement d'images : application à l'étude des mélanges binaires critiques hors d'équilibre." Paris 6, 1986. http://www.theses.fr/1986PA066345.
Повний текст джерелаAmara, Moncef. "Etude de l'implémentaiton matérielle de l'arithmétique pour la cryptolographie." Paris 8, 2011. http://www.theses.fr/2011PA083378.
Повний текст джерелаIn this thesis, we propose to study and discuss the problem of the hardware implementation of arithmetic for the cryptography based on elliptic curves. We study the mathematical tools necessary for the execution of the different protocols for elliptic curves, by discussing theoretical and hardware aspects, by treating in detail their complexity as well as various possible optimizations for the execution of these protocols (basic field, coordinate systems, algorithm of addition and duplication,…, etc. ). This subject is at the interface of mathematics, data processing and electronics. After a first bibliographical study on the subject; by studying the notion of cryptography and arithmetic of the finite fields, we make a state of the art of cryptography and we introduce the mathematical general tools which we will use (the arithmetic in the field Fqn), we present in detail the concept of elliptic curves; we then present the various methods of scalar multiplication on the curves. Then we give the various coordinate systems to represent the curves, as well as the formulas of additions, of doublings relationaly to these coordinates. We introduce another family of curves which are the curves of Edwards, and we make a comparison between this curves and the standards elliptic curves. We study the reconfigurable circuits for a hardware implementation; we present the reconfigurable circuits mainly FPGAs. In the last part, we develop the hardware implementations of elliptic curves arithmetic and some architectures of the scalar multiplication; we are interested in arithmetic of elliptic curves: this part gathers various works which we carried out concerning the establishment of arithmetic in finite fields and the study of implementation of hash functions, which are required for protocols of digital signature. We devoted more efforts to the development of the theoretical part in this thesis, by developing a number of various concepts, methods of computation and algorithms, considering that it was necessary to acquire a solid knowledge of embedded arithmetic for public key cryptography, on the FPGAs devices. Therefore, it was necessary to have a good control on theoretical aspects as well
Sentouh, Chouki. "Analyse du risque et détection de situations limites : application au développement des systèmes d'alerte au conducteur." Phd thesis, Université d'Evry-Val d'Essonne, 2007. http://tel.archives-ouvertes.fr/tel-00419414.
Повний текст джерелаAchour, Zeineb. "Étude structurale et thermodynamique du système n-tétracosane : n-hexacosane." Vandoeuvre-les-Nancy, INPL, 1994. http://www.theses.fr/1994INPL033N.
Повний текст джерелаRevue, Alexandre. "Contribution des systèmes d'information géographiques à la sécurité routière : approche multicapteurs pour l'évaluation de configurations à risques." Paris, ENMP, 2003. http://www.theses.fr/2003ENMP1147.
Повний текст джерелаBoutelier, Martin. "Etude des Oscillations Quasi Périodiques dans les systèmes binaires X de faible masse." Phd thesis, Université Paul Sabatier - Toulouse III, 2009. http://tel.archives-ouvertes.fr/tel-00444379.
Повний текст джерелаSiellez, Karelle. "Les systèmes binaires compacts comme sources de multimessagers : taux, distribution, émissions." Thesis, Nice, 2015. http://www.theses.fr/2015NICE4055.
Повний текст джерелаThe coalescence of compact binaries (two neutron stars or a neutron star and a black hole) emits gravitational waves and are thought to produce a short Gamma-Ray Burst (sGRB). With the second generation of gravitational waves detector, the detection in coincidence of both electromagnetic and gravitational emission will open a new window in astrophysics; the multimessenger area. It will allow the understanding of this phenomena, their progenitor and central engine. The goal of this thesis was to made an estimation of the coincident rate for different instruments, using two different method. The first one was based on the oberservations. Thus, I selected a sample of 31 sGRBs of known redshift based on specific criteria. After studying the spectral, temporal and host properties, I derived the isotropic local rate corrected from all known biases. This result was then applied to different satellites and gravitational detectors. After that I simulated this population to confirm this coincident rate with the Monte Carlo simulations. The difference between the two results is explained by a low-redshift population that can't be reproduce by the simulations, and was underestimated before. After tested different parameters for the model, I conclude that this non reproducible population of faint sGRBs at low redshift might be due to an other sort of progenitor. This thesis shows the feasibility of a coincident detection and the observational strategy that should be adopted. The understanding of our sample of sGRB is crucial in the preparation of this coincident detection
Marchand, Tanguy. "Studying gravitational waves of compact binary systems using post-Newtonian theory." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS121/document.
Повний текст джерелаThe detection and the analysis of gravitational waves emitted by compact binary systems rely on our ability to make accurate predictions within general relativity. In this thesis, we use the post-Newtonian (PN) formalism, and in particular the Blanchet-Damour-Iyer framework, to study the dynamics and the emission of gravitational waves of such systems. The different computations that we performed are motivated by our aim to obtain the phase of the gravitational wave signal at the 4.5PN order. In that regard, crucial steps have been achieved within this thesis. First of all, we compute the third-order tail effects in the radiation field, yielding the 4.5PN coefficient of the energy flux for binaries of non-spinning objects in circular orbits. Besides, we determine the remaining ambiguity of the 4PN Lagrangian of two spinless compact bodies. This result completes the first derivation from first principles of the 4PN equations of motion. Then we comprehensively study the conserved quantities of the 4PN dynamics. Finally, we provide a preliminary result of the 4PN source mass quadrupole, which constitutes one of the crucial steps towards the computation of the 4.5PN phase