Дисертації з теми "Systèmes microélectromécaniques – Simulation par ordinateur"
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Klein, Meyer Jean-Sébastien. "Contribution à la modélisation multi-physique des systèmes complexes dans un contexte de DFX : application à la conception de micro-mécanismes." Troyes, 2008. http://www.theses.fr/2008TROY0011.
Повний текст джерелаWe propose in this PhD a method to assist the designer in the choice of multi-physical tech-nologies. We propose to improve the link be-tween functional requirements of a product and technologies. This link between those two concepts is made owing to physical principles. We propose a model based on relationships between Function, Physical Principle and Tech-nology (FPPT). We present in detail this model by describing the process of creation, the enti-ties that composed the FPPT model and the functional, physical and technological parame-ters. Those parameters also support the link and help to assess the design choices. They can be use to simulate the behaviour of a design alternative very early in the design process. The FPPT model takes into account physical and technological limits issued from the physics or the technology solutions. Those limits are espe-cially useful for MEMS design. We present, trough an example (the design of a MEMS switch), how the FPPT model is integrated into a DFX approach. We also present how information given by the FPPT model and how the parameters can be used to realise more complex simulation: Multi Disciplinary Optimisation (MDO) or robustness analyses. Finally we present the specifications and the development of a software demonstrator (KBE system) to implement the FPPT model
Aouabdia, Nabila. "Etude d'un capteur à base de résonateur planaire pour applications au contrôle non destructif." Paris 6, 2012. http://www.theses.fr/2012PA066137.
Повний текст джерелаThe objective of this thesis is the study of a sensor based on a rectangular planar resonator (RPR) for applications to Non-destructive Evaluation (NDE). In this context, two approaches were defined. First one, conception, modeling, simulation and realization have been made on rectangular structures with an anisotropic substrate and an isotropic superstrate. An analytic model was developed by using the Moments Method (MoM) and validated with two electromagnetic commercial softwares (HFSS and CST). The second approach of this work was focused on the characterization of biological materials with the RPR prototypes used as an applicator for Non-destructive Evaluation in the medical domain. Our center of interest was oriented towards the measurements of dielectric properties of biological tissues replacing the superstrate in order to extract their complex permittivity. Measurements were made in the Laboratoire d'Électronique et Électromagnétisme (L2E) on several samples (liver, fat, chicken, butter, foie gras, etc…). Measurements associated with electromagnetic simulations have enabled to obtain microwave dielectric parameters of these materials
Nguyen, Duy Duc. "Modeling a micro-mirror array and contribution to the development of a simulator of micro-system arrays." Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCD087.
Повний текст джерелаIn this thesis, we contribute to the modeling, simulation and optimization of a new generation of micro mirror arrays designed by the Astrophysics Laboratory of Marseille (LAM). A contribution is also made to the development of MEMSALab a symbolic computation software package designed to asist multiscale model derivation for microsystem arrays. The coupling between the quasi-static nonlinear behavior of a cell of the micro-mirror array and the electrostatic field used for its actuation is simulated. The simulation is then used to study the phenomenon of pull-in and its optimization. Then, a homogenized model for the electrostatic field in the vacuum space surrounding in the micro-mirror array has been built using an asymptotic method. The contributions to the development of MEMSALab consist in the introduction of an extension and combination theory that will be used to construct multiscale models based on various asymptotic approaches by a process of successive complexifications. Finally, a complete specification language for using MEMSALab is presented and illustrated by significant examples. In particular, it was used to encode the derivation of a homogenized model that serves as an initial state to the extension-combination method
Hénin, Jérôme. "Simulations moléculaires d'événements rares dans les systèmes biologiques membranaires." Nancy 1, 2006. http://www.theses.fr/2006NAN10007.
Повний текст джерелаSlow or non spontaneously occurring processes involving biological macromolecules may still be studied through molecular dynamics simulations, provided that an algorithm promotes the exploration of a well–chosen reaction coordinate by the system. We implemented such an algorithm in the NAMD program, designed for large–scale simulations of biomolecular systems. We can then investigate the folding of peptides into alpha–helices, the recognition and association of proteins inside the membrane, as well as the specific transport of a small molecule, glycerol, by a bacterial transmembrane channel
Rongère, François. "Simulation dynamique des systèmes bâteau-avirons-rameur(s)." Ecole centrale de Nantes, 2011. https://tel.archives-ouvertes.fr/tel-00679491.
Повний текст джерелаRowing, a mechanical water sport, consists in propelling a boat by human power. From a mechanical point of view, the complex system Boat-Oars-Rower(s) can be considered as a multibody structure on a floating base. Its study comes under the multibody mechanics and, concerning the fluid-structure interaction, under seakeeping, maneuverability and aerodynamics. The large amplitude periodic motion of the rower and the intermittent nature of propulsion, both excite the boat along its six degree of freedom. Aside from practice, the strong coupling between the rowers, the boat and propulsion can be understood, and accurately described by numerical simulation. A framework for dynamics simulation taking into account the floating base has been developed by unifying mechanical and hydrodynamic approaches. It has been called GMRS (Global Mechanical Rowing Simulator). Robotics techniques have been used to describe the mechanics of the multibody system. The systematization of the parameters allows to model every kind of rowing system, taking on board one toeight rowers with one or two oars. Dynamics solving is based on the recursive formulation of the Newton-Euler equations. The inertial characteristics of the rowers are set fromanthropometric models. The system is driven by inverse dynamics. The kinematics are generated using B-spline models, whose properties are exploited to allow a parametric description of the motion, offering the possibility to optimize the rowing technique
Le, Bodic Laurent. "Approche de l'évaluation des systèmes interactifs multimodaux par simulation comportementale située." Brest, 2005. http://www.theses.fr/2005BRES2006.
Повний текст джерелаThe Phd thesis is a contribution to evaluation of multimodal interactive systems. More particularly, we propose an approach of the evaluation of theses systems by a behavorial and located simulation. Such a study requires the use of a virtual actor, registered in a virtual environment. Its interaction with a virtual interactive system is used as a representation of a possible man-machine communication. The people in charge of the development use then the usability problems, detected in the virtual world, as a source of investigations to increase the efficiency of their prototypes. Modeling that we propose lies on the interaction of three functional bricks, which are : Models of environment, which influence user in his decision-making and which interacts with him (avoidance, displacement, etc. ). Model describing interactive systems which, by their characteristics, allows and guides the dialogue. Model of users, reproducing human decision with mixing of cognitive and perceptive aspects. This virtual user, by his characteristics, his history, interacts with environment and interactive system through the realization, in a virtual world, of a scenario of evaluation. This study is concluded by the introduction of the software demonstrator SIHMM and the study from its operational validity. This one is examined through the correlation of reals and virtuals experiments. From this one, we determine the potential use of the simulation in the phases of development, of interactive systems and open prospects on the future use of the simulation which we wish to develop
Béraud, Nicolas. "Fabrication assistée par ordinateur pour le procédé EBM." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAI052/document.
Повний текст джерелаThe Electron Beam Melting (EBM) process allows to build metallic parts from powder. Thanks to the geometric and mechanical quality of the parts produced, the EBM process can be used to manufacture functional parts and not only prototypes. This process, with other additive metallic processes, make it possible to consider a transition from 3D printing to metallic additive manufacturing.The use of additive manufacturing in an industrial environment requires compliance with quality, cost and time criteria for the parts produced. The production of manufactured parts involves a series of numerical stages which is called the numerical chain. The numerical chain has a significant impact on the three criteria mentioned above. Thus, this thesis provides an answer to the following question:How Computer Aided Manufacturing can improve the quality, cost and time of the EBM manufacturing process?This problem is addressed through the following underlying question:What are the required characteristics for a Computer Aided Manufacturing system adapted to the EBM process?In order to answer this question, the current numerical chain is analyzed. Three main limitations are found:- the use of STL files format- the process cannot be optimized at different scales- the process cannot be simulatedTo solve these issues, a CAM environment is proposed. It allows the centralization of all numerical operations in a single environment. All supported formats can be used within this environment, such as native CAD file formats or STEP format. Software developments are done to prove the feasibility of such an environment.The CAM environment implementation reveals the crucial role of simulation in this system. It is therefore necessary to answer this second question:How to obtain an EBM process simulation allowing the development of parameters, virtually?Although EBM simulation is a recurrent subject in scientific literature, existing studies are based on the finite elements method but the calculation time needed is too important to be used in an CAM environment. Thus, an alternative type of simulation is created in this thesis: a simulation based on abacus. It is composed of a finite elements model, that allows heat maps generation for standards cases of heating and cooling. These heat maps are then transformed in abacus. The simulation algorithm based on abacus search the nearest abacus from the simulated situation in order to estimate the temperatures at the next time step.This simulation method was used to reduce the calculation time while keeping a sufficient precision to optimize process parameters.With the simulation based on abacus, a tool for the optimization of melting strategies is developed. This tool allows quality improvement for the produced parts through the calculation of melting strategies according to thermic criteria.To summarize, the main contributions of this work are:- the definition of requirements specifications of a powerful numerical chain for the EBM process- the development of a CAM environment adapted to the EBM process- the proposal of a fast simulation for the EBM process, based on abacus- the development of a tool for the optimization of melting strategies
Escude, Bruno. "Modélisation et simulation à évenements discrets de systèmes hybrides." Aix-Marseille 3, 2000. http://www.theses.fr/2000AIX30017.
Повний текст джерелаCavaliere, Domenico. "DAMeSI : un profil pour l'évaluation de performances des systèmes d'automatisation distribués." Vandoeuvre-les-Nancy, INPL, 2002. http://www.theses.fr/2002INPL032N.
Повний текст джерелаPierreval, Henri. "Analyse, modélisation et simulation des systèmes de production : application au cas d'une fonderie." Lyon 1, 1987. http://www.theses.fr/1987LYO19029.
Повний текст джерелаDesmeulles, Gireg. "Réification des interactions pour l'expérience in virtuo de systèmes biologiques multi-modèles." Brest, 2006. http://www.theses.fr/2006BRES2021.
Повний текст джерелаTo model biological systems and experiment them through a virtual reality application is the purpose of this thesis. The aim is to provide the definition of a generic modelling framework and its implementation for the study of physiological systems. In the first place, the generic model is based on the reification of interactions into autonous active objects. Thereby, the biological models can be organized in a layout of autonomous systems. Therefore, the generic model infers two conceptions of autonomy: the first one is used to design virtual reality systems and the second one is oriented towards biological modelling. The generic model is specialized into several modelling tools for biology. Thereafter, the library composed by the generic models and the tools allows the building of applications. The purpose of the main application is to implement the mode) of an allergic urticada phenomenon. At last, the mode) of a minimal autopoietic system exemplifies the method's potentials
Ataya, Ali. "Application des techniques de simulation aux systèmes de production : le logiciel SIMAF." Tours, 1988. http://www.theses.fr/1988TOUR4005.
Повний текст джерелаWoiret, Patrick. "Modélisation et simulation pour l'aide à la conception des systèmes de convoyage." Lyon, INSA, 1988. http://www.theses.fr/1988ISAL0025.
Повний текст джерелаEdibe, Bénédicte. "Modélisation et simulation de systèmes dynamiques par les bond graphs : application aux systèmes mécaniques polyarticulés." Rennes 1, 1995. http://www.theses.fr/1995REN1A007.
Повний текст джерелаRiyanto. "Simulation, optimisation, et analyse de performances pour les systèmes industriels d'acquisition d'images." Toulouse, INPT, 1997. http://www.theses.fr/1997INPT107H.
Повний текст джерелаGaude, Daniel. "Modélisation et simulation de systèmes électromagnétiques à induction avec prise en compte des matériaux magnétiques et formulation par graphes de liens." Lyon 1, 1999. http://www.theses.fr/1999LYO10115.
Повний текст джерелаDurieux, Séverine. "Analyse de performance par simulation et conception de systèmes de production robustes." Clermont-Ferrand 2, 2003. http://www.theses.fr/2003CLF21444.
Повний текст джерелаFreud, Nicolas. "Modélisation et simulation de systèmes d'imagerie par rayons X ou gamma." Lyon, INSA, 2003. http://theses.insa-lyon.fr/publication/2003ISAL0061/these.pdf.
Повний текст джерелаThis PhD thesis is devoted to the development of a computer code enabling to simulate in a short time realistic radiological images, taking into account the main physical parameters acting in an X- or gamma-ray imaging chain. In the first part, we carry out a general survey of the state of the art in the field of radiation transport simulation. This study leads us to choose a deterministic approach and to seek specific algorithms, devoted to the simulation of radiological images and, at first, accounting only for the directly transmitted radiation. The proposed solutions, which emphasize execution speed and robustness, are implemented in a code named VXI (Virtual X-ray Imaging). VXI makes it easy to carry out simulations in realistic imaging configurations (polychromatic spectrum, objects with complex geometry. . . The second part of this thesis broaches the simulation of the radiation scattered by the inspected objects. We propose a deterministic method to simulate first-order photon scattering without having recourse to a parallel computing architecture. This method is validated by comparing its results with the ones given by the Monte Carlo code Geant4
Lecland, Pascal. "Ergonomie et conception assistée par ordinateur : simulation des mouvements d'un bras anthropomorphe en présence d'obstacles." Châtenay-Malabry, Ecole centrale de Paris, 1991. http://www.theses.fr/1991ECAP0192.
Повний текст джерелаTorrel, Jean-Claude. "Modélisation et Simulation de phénomènes complexes par systèmes multi-agents hiérarchiques : application en cosmologie." Paris 5, 2007. http://www.theses.fr/2007PA05S020.
Повний текст джерелаNumerical simulation has been, for a few years, used like a essential complement to the observational and theoretical approaches in cosmology. If the methods usually employed allowed a great number of success they present some limitations: - they require a high computing power ; - the results obtained vary according to the computing power used ; - the existing models are not very adaptable, mainly dedicated to the study of a phenomenon or a class of phenomena in particular. Simultaneously with these methods developed in cosmology, it appeared, in the sciences of complexity, other models of simulation, in particular based on cellular automata or multi-agents systems. However, if these models can be used to predict the general tendencies of a system, they are inadequate for the prediction and quantitative analysies. In this work, we propose an hybrid approach, inspired of the models used in cosmology and sciences of complexity, in order to study the dynamics of the stellar structures. We use a hierarchical multi-agents system based on physical laws to leave room to self-organization of the system while preserving a strong bond with physics
Martin, Francis. "Méthodologie de modélisation et simulation de systèmes complexes décrits par réseaux de Petri colorés." Grenoble INPG, 1987. http://www.theses.fr/1987INPG0038.
Повний текст джерелаGareau, Alain. "Utilisation des systèmes de particules pour la simulation de phénomènes naturels : présentation d'une architecture permettant l'intégration de systèmes animés hétérogènes." Lyon 1, 1997. http://www.theses.fr/1997LYO10089.
Повний текст джерелаHadjadj-Aoul, Wafaa. "Commande optimale et robuste par Backstepping des systèmes non linéaires : application au quadrotor." Versailles-St Quentin en Yvelines, 2014. http://www.theses.fr/2014VERS0056.
Повний текст джерелаIn this thesis, we are interested in optimizing the Backstepping technique. Three controllers were developed. The first control is given by the optimal control of the attitude using Backstepping for quaternions based UAV model, which offers a non singular overall representation by the use of a four element vector. Numerical simulation has demonstrated the effectiveness of the proposed control, which takes into account the multiplicity of equilibrium solutions. The second controller is given by the optimal control using Backstepping for the global system (position and orientation), which is parametrized by Euler angles. The third controller is a robust version of the previous controller. It is based on optimal H infini control using Backstepping. These two last commands are developed for the system, which only require measures of the position and the yaw angle. The simulation results clearly show the effectiveness of these two controllers in speed stabilization and trajectory tracking
Comte, Jean-Christophe. "Modélisations théorique et électronique de systèmes de réaction-diffusion applications au traitement du signal." Dijon, 2000. http://www.theses.fr/2000DIJOS022.
Повний текст джерелаBoussemart, Frédéric. "La simulation graphique interactive des systèmes dynamiques non linéaires : conception et réalisation en Scratchpad." Lille 1, 1992. http://www.theses.fr/1992LIL10037.
Повний текст джерелаThual, Olivier. "Transition vers la turbulence dans des systèmes dynamiques apparentés a la convection." Nice, 1986. http://www.theses.fr/1986NICE4000.
Повний текст джерелаGinestet, Stéphane. "Simulation dynamique des systèmes de climatisation : application aux régulations innovantes de centrales de traitement d'air." Paris, ENMP, 2005. http://www.theses.fr/2005ENMP1306.
Повний текст джерелаAdvanced management of indoor air quality and energy consumption in HVAC systems required an adapted control and a cheking of the preformances. The physical modelling of the equipments makes it possible a resolution of the problems under a formulation borrowed from the automatism. Based on systemic analysis, a methodology is implemented by means of a graphic software, including finite state machine programming. A strategy of management is thus defined for dessiccant cooling systems. The methods of parameter settings of the continuous regulators are analysed. More relevant are applied in simulation to VAV systems. Using the developed software, the guarantee of the performances of these systems with VAV is quantified:- from the point of view of the implementation of these systems vs constant air flow- by the evaluation of the impact of faults resolution. Results obtained are confronted with an experimetal campain
Danès, Patrick. "Interfaçage symbolique-numérique dans la simulation qualitative des systèmes dynamiques." Toulouse 3, 1995. http://www.theses.fr/1995TOU30072.
Повний текст джерелаChalal, Lamine. "Coordination de systèmes multisources pour favoriser la production d’énergie électrique renouvelable." Thesis, Lille 1, 2013. http://www.theses.fr/2013LIL10006/document.
Повний текст джерелаThis thesis is devoted to the supervision of the hybrid power generation system composed of various types of sources including renewable sources and electrochemical storage elements. Chapter I is devoted to the state of the art of supervision of such hybrid systems. In this chapter, the context and the scope of our study are defined and the advantages-disadvantages of each such strategy are presented. Our vision for the supervision of a multi-sources system that integrates sources of renewable resources is presented thereafter. In Chapter II we specify the hybrid system and the models of each component in order to integrate them into a supervision structure. Chapter III deals with the design of a supervisory predictive controller which optimizes the power flow of a renewable hybrid system (solar panels, micro-turbine and battery). Short time predictions of the solar power and the power reference are embedded in the supervisor. The performance index integrates the environmental impact, the cost of fuel, battery cycling and the energy delivery. Simulations and a real-time application of a model-in-the-Loop plant are carried out to illustrate the applicability and electiveness of the proposed supervisory predictive control design. Chapter IV aims to show the generic properties of the proposed supervisory system. In fact, a wind turbine has been added to the hybrid system and the cost function has been modified. The real-time simulations show the effectiveness of the proposed power management system. Then, the turbine is controlled in degraded mode in order to reduce the impact of wind speed fluctuation with respect to the power reference. The cost function has been modified to meet these new requirements. Finally, the potential benefits of considering a dynamic prediction horizon are explained. The variation of the prediction horizon is performed according to the relevance of the predictions of renewable resources. Tested on an experimental platform combining real components and real-time simulation models (Model-in-the-loop), the results show the validity of all the developed concepts
Pardo-Gibson, Oscar. "Etude et simulation temporelle de la susceptibilité électrompagnétique de systèmes interconnectés." Ecully, Ecole centrale de Lyon, 1987. http://www.theses.fr/1987ECDL0019.
Повний текст джерелаMaalej, Mohamed-Amine, and Véronique Delcroix. "Diagnostic multiple des systèmes complexes à base de réseaux bayésiens." Valenciennes, 2006. http://ged.univ-valenciennes.fr/nuxeo/site/esupversions/46028b3e-dbca-41c6-a69f-b740ee4d0519.
Повний текст джерелаModel Based Diagnosis approach revolutionizes the field of the diagnosis as overcoming the lack of knowledge by using Model. Our research focuses on the task of multiple diagnosis, from failure observations, for complex and highly-reliable large systems. We take the advantages of the Bayesian networks models to improve the diagnosis of this type of systems. These models integrate the components failures prior probabilities, and allow estimating posterior probabilities of diagnoses, by an approached calculation. We present a methodology of diagnosis using Bayesian network. Our approach integrates a model design method, in addition to two diagnosis algorithms : the first algorithm allows calculating the most probable diagnoses for a failing system; the second provides quickly representatives of the diagnosis classes, it reveals also the cases while additional observations are necessary. Finally we test these algorithms in terms of computing time and results quality for digital circuits of various sizes
Mettenleiter, Manuel. "Contrôle adaptatif des instabilités aéroacoustiques : application aux systèmes de propulsion." Châtenay-Malabry, Ecole centrale de Paris, 2000. http://www.theses.fr/2000ECAP0656.
Повний текст джерелаDeloule, Françoise. "Aide à la conception d'un atelier flexible : modélisation - simulation - dimensionnement." Lyon, INSA, 1987. http://www.theses.fr/1987ISAL0058.
Повний текст джерелаThe flexible manufacturing system is a production concept indispensable for the enterprise which wants to stay competitive. A Flexible Manufacturing System consists of three sub-systems : physical system, information system and pilot system. It's conception is complex. First, we have surveyed the existing methods and tools used in the different phases of it s elaboration from the different view points. We have chosen the method MERISE as a conception tool because it is adequate for the problems of Flexible Manufacturing System. In the second time, we have centred our research on the evaluation of parameters of the physical system of the workshop. It' s product capacity, in term of quantity , quality and rapidity of product elaboration, depends on these parameters. Modelling and Simulation seem to be indispensable and comp elementary to solve the problem and to answer the complex problem given by the impact of the variation of the different parameters. On the other side, they permit to define the required specification elements for the choices of machines. We propose also a structured process for the best use of simulation and evaluation of parameters in order to obtain a correct and optimal solution according to some criteria. It brings a considerable contribution in conception of Flexible Manufacturing System
Leybros, Antoine. "Etude de la destruction de systèmes polyphasiques en milieu eau supercritique." Aix-Marseille 3, 2009. http://www.theses.fr/2009AIX30035.
Повний текст джерелаSpent ion exchange resins (IER) are, hence, radioactive process wastes for which there is no satisfactory industrial treatment. Supercritical water oxidation offers a viable alternative treatment to destroy the organic structure of resins by using supercritical water properties. The reactor used in Supercritical Fluids and Membranes Laboratory is a double shell stirred reactor. Total Organic Carbon reduction rates higher than 99% were obtained thanks to POSCEA2 experimental set-up when using a co-fuel, isopropyl alcohol. Influence of operating parameters was studied. A detailed reactional mechanism for cationic and anionic resins is created. For the solubilization of the particles in supercritical water, a mechanism has been created with the identified rate determining species and implemented into Fluent® software through the EDC approach. Experimental temperature profiles are well represented by EDC model. Reaction rates are hence controlled by the chemical species mixing
Orero, Joseph Onderi. "Modélisation de systèmes émotionnels à partir de signaux physiologiques et application dans la conception de jeux vidéo." Paris 6, 2011. http://www.theses.fr/2011PA066173.
Повний текст джерелаIcart, Sébastien. "Approche par simulation supervisée pour la conception système d'architectures logicielles matérielles embarquées." Nice, 2012. http://www.theses.fr/2012NICE4020.
Повний текст джерелаWith the advances of transistors integration, systems on chip are more and more complex and include an increasing number functionality. Concurrently, under pressure of time to market, design methods, IP reuse and high-level simulation are all techniques to speed up the system design. However, during this process, the designer may be faced with unexpected behaviour due to complex interactions between components. Under these conditions it becomes difficult and tedious to define architecture capable of performing all the functionalities while reducing costs. Therefore, to facilitate the design of the architecture, we propose a supervised simulations design approach. In this method, we add observers in the system collecting data from simulation and able to transmit them to an artificial neural network. The purpose of this network is to propose a set of architectural parameters allowing constraints to be satisfied. Using this method on a embedded multimedia application shows that with appropriate development of the neural network, it is able to provide relevant values of architectural parameters. The quality of the solution depends mainly on the representativeness of observations and of the network learning process
Lecouey, Jean-Luc. "Etude des systèmes non liés 16B et 13Be." Phd thesis, Université de Caen, 2002. http://tel.archives-ouvertes.fr/tel-00003117.
Повний текст джерелаZennou, Sarah. "Méthodes d'ordre partiel pour la vérification de systèmes concurrents et temps réel." Aix-Marseille 1, 2004. http://www.theses.fr/2004AIX11062.
Повний текст джерелаRandisi, Giacomo. "Structure des systèmes non liés 10,12Li et 13Be." Caen, 2011. http://www.theses.fr/2011CAEN2080.
Повний текст джерелаThe unbound systems 10,12Li and 13Be have been studied via nucleon removal from a 14B beam of 35 MeV/nucleon. The invariant mass (decay energy) spectra were reconstructed from the measured 9,11Li-n and 12Be-n coincidences. Simulations, taking into account the effects of the experimental setup and the reaction, were developed. The reconstructed decay energy spectra were interpreted using theoretical lineshapes folded with the experimental response, as well as uncorrelated distributions obtained from the data by event mixing. In the case of 10Li, the data were reproduced with an s-wave virtual state of scattering length as=-10+1-3 (stat) ±3 (syst) fm and an l=1 resonance with energy Er= 0. 55 ± 0. 02 (stat) ±0. 05 (syst) MeV and width Γ0 = 0. 35 ± 0. 05 (stat) ±0. 15 (syst) MeV, confirming the ν1p1/2 et ν2s1/2 level inversion. For 12Li, evidence was found for excited states between 0. 2 and 0. 8 MeV above the threshold. In the case of 13Be, the decay energy, as well as the other observables, were reproduced assuming an l=0 resonance with Er = 0. 70 ± 0. 05 (stat)±0. 07 (syst) MeV and Γ0 =1. 7 ± 0. 1 (stat) ±0. 1 (syst) MeV, and an l=2 resonance with Er = 2. 4 ± 0. 1 (stat) ±0. 1 (syst) MeV and Γ0 = 0. 6 ± 0. 2 (stat) ±0. 1 (syst) MeV. This hypothesis is supported by the selectivity of proton knockout, whereby the neutron configuration of the states populated in 13Be should directly reflect that of 14B
Cassier, Claude Yves. "Application de la réalité virtuelle et augmentée pour la conception et la maintenance de systèmes complexes." Orléans, 2002. http://www.theses.fr/2002ORLEA001.
Повний текст джерелаDarlet, Ludovic. "Système de visualisation scientifique assistée par ordinateur." Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10044.
Повний текст джерелаVauglin, François. "Modèles statistiques des imprécisions géométriques des objets géographiques linéaires." Université de Marne-la-Vallée, 1997. http://www.theses.fr/1997MARN0010.
Повний текст джерелаRaiff, Bertrand. "Définition et conception d'un simulateur de circuits analogiques non linéaires à modèles par zones et ordres variables." Toulouse, INPT, 1992. http://www.theses.fr/1992INPT076H.
Повний текст джерелаBarakat, Oussama. "Contribution à la modélisation et à la simulation orientée objet des systèmes flexibles de production." Besançon, 1991. http://www.theses.fr/1991BESA2017.
Повний текст джерелаAlvinerie, Eric. "Contribution à l'étude des jets anisothermes plans par analyse de stabilité et simulation numérique directe." Poitiers, 1996. http://www.theses.fr/1996POIT2335.
Повний текст джерелаKubera, Yoann. "Simulations orientées-interaction des systèmes complexes." Phd thesis, Université des Sciences et Technologie de Lille - Lille I, 2010. http://tel.archives-ouvertes.fr/tel-00839390.
Повний текст джерелаAlliet, Marion. "Concepts et outils logiciels pour l'aide à l'analyse des résultats de simulations statiques de procédés." Toulouse, INPT, 1997. http://www.theses.fr/1997INPT004G.
Повний текст джерелаSezestre, Elie. "Les poussières et petits corps des systèmes planétaires extrasolaires." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAY022/document.
Повний текст джерелаDuring my thesis, I numerically simulated the dynamical behaviour of dust and small grains around stars, applied to two ranges of stellar distance : debris disks and exozodis.Concerning debris disks, I focused on the fast moving arch-like structures observed over 15 years inside the disk of AU Mic. Supposing that they all come from a single parent body and that the dust composing the arches have the same dynamics, I showed that the parent body must be closer-in than the planetesimal belt (<25 au), on a circular orbit or static with respect to the observer. Grains must be submicronic in order to explain the apparent velocity of the arches, gained by means of stellar wind pressure. Large-scale magnetic field of the star is large enough to explain the vertical extent of the arches, but require further investigations.I also developped a numerical code in order to test the dynamical origin of dust composing exozodis, to compare its results to the observations. I showed that the classical PR-drag scenario involving grains drifting inward from a distant cold parent belt produce an excess flux in mid-infrared compared to the near-infrared, unbalanced by the pile-up. The cometary scenario, by producing dust very close to the star, emits less in mid-infrared. A ten of kilometric comets can reproduce the flux levels observed around all stars. This numerical code is also able to handle the DDE, the stellar wind pressure or the magnetic field.During my work, I showed that taking into account the dust dynamics can constrain the dust physical properties. I developped adaptative numerical tools that can handle the variety and complexity of dust observed around stars
BEN, KHALIFA NABIL. "Contribution a l'etude de la simulation distribuee des systemes decrits par reseaux de petri." Toulouse 3, 1997. http://www.theses.fr/1997TOU30225.
Повний текст джерелаHabib, Bassel. "Cybernard : un système de découverte autonome qui reconstruit rationnellement la démarche empirique de Claude Bernard en modélisant ses expérimentations basées sur des résultats réels." Paris 6, 2010. http://www.theses.fr/2010PA066686.
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