Teses / dissertações sobre o tema "Design génératif"
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Jean, Fabien. "L'échange génératif de technologies innovantes : engagement conceptif et conception de la valeur". Thesis, Paris Sciences et Lettres (ComUE), 2016. http://www.theses.fr/2016PSLEM082/document.
Texto completo da fonteInnovation processes of large companies experience a lack of resources between Research and Development, i.e. the valley of death. Safran created its Innovation Department to counterbalance. It is based on exchanges with the subsidiaries. However such exchanges cannot be processed in most early stages, when they include unknowns. For instance, ideas generated through the DKCP method remain unexplored. This intervention-research aims at establishing a model of collective action to exchange in the unknown. It defends the thesis that, in the unknown, sellers and buyers of innovative technologies engage in the design of the boundary between technologies and environments.Facing the limits of classic models of exchanges of economy, decision, intéressement and creativity, this thesis adopts a design-theories framework. It proposes the model of design engagement of resources. It explains the limits of a common tool for exchanging technologies, i.e. Technology Readiness Levels. It proposes to model exchanges between seller and buyer as the exploration of the Technology-Environment boundary. To do so it constructs the C-K T / C-K E formalism. Finally, the method Steering Exploration Through Technology and Environment Invariants ("Pilotage de l'Exploration Par les Invariants Technologie-Environnement" (PEPITE) in French) is constructed in collaboration with Safran Innovation Department. It is based on two cases of explorations which passed the valley of death within the researchers intervention
Gallas, Mohamed-Anis. "De l'intention à la solution architecturale : proposition d'une méthode d'assistance à la prise en compte de la lumière naturelle durant les phases amont de conception". Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0101/document.
Texto completo da fonteThe daylight illuminates the architectural space and creates the necessary conditions to accommodate human activities. The illuminating function of daylight is joined to another sensitive dimension that attributes a distinctive identity to the designed space. The control of daylight in architectural environment needs some detailed and precise characteristics about aperture and walls features. The multiplicity of these characteristics is faced with the inaccuracy and the uncertainty of the design information available during the early steps. Our research aims to propose a design support method that takes into account the early design step features and helps designers to integrate there daylight atmosphere intentions in project. We propose a design support method structured as a declarative modelling process. The declarative process helps the designer to declare his daylight intentions and to translate them to potential solutions that could be integrated in his project. This method considers the designer intentions as the main design information used to help designer during the early design steps. The proposed method provides functionalities that could operate the inaccuracy and the uncertainty of the ideas research and formalisation steps. Our design support method was implemented in a prototype design support tool. The cognitive contribution and the ability to support the design activities of the proposed tool was evaluated and analysed in an experimental design context
Freire, Marco. "Layout problems under topological constraints for computational fabrication". Electronic Thesis or Diss., Université de Lorraine, 2024. http://www.theses.fr/2024LORR0073.
Texto completo da fonteLayout problems appear in many areas of engineering and computer science. Typically, a layout problem requires to spatially arrange and interconnect a number of geometric elements in a domain. The elements can have a fixed or variable size, as well as an arbitrary shape. The domain may be be a volume, a planar region or a surface. It may be fixed or allowed to reshape. The interconnections may be simple paths, shared contact regions, or both. A set of constraints and objectives complement the problem definition, such as minimizing interconnection length, fixed positions for some elements, and many others. Layout problems are ubiquitous: floorplanning in architectural design, video game level design, industrial facility layout planning, electronics physical layout design, and so on. Topological constraints often arise in layout problems. Topology considers objects as defined by their elements' neighborhoods, without consideration for their specific geometry of placement. For example, a graph is a purely topological structure, consisting only of the relationships between its nodes. On the other hand, a graph drawing needs to specify the position of its nodes, i.e. the geometry of the graph. This thesis focuses on tackling two specific layout problems subject to topological constraints arising in computational design and fabrication. These are electronic circuit physical layout generation and 3D printing support generation. The first contribution is an entire system for the design of freeform RGB LED displays through bendable circuit boards. Typical rigid PCBs are made to bend by strategically using kerfing, i.e. cutting patterns into the board to create `hinges' where it needs to fold. The system takes a low-poly mesh as an input and outputs fabrication-ready blueprints, that can be sent to any online PCB manufacturer. After fabrication, the display is obtained by folding the circuit over the 3D printed mesh. The LEDs are commonly found on commercially available LED strips and are easy to control. Thus, the display can be used through a programmable interface to generate impressive lighting effects in real time. The global layout problem is decomposed into local per-triangle sub-problems by exploiting the chain topology of the electronic circuit, the final layout being obtained by stitching the local solutions. Instead of traditionally following the physical design pipeline, i.e. schematics design, component placement and routing; we decide the number of components, their placement and their routing per-triangle on the fly. The second contribution is a procedural algorithm for generating bridges-and-pillars supports for 3D printing. These supports have been shown to print reliably and in a stable manner in [DHL14]. Unfortunately, the previous algorithm struggles to generate supports that do not intersect the object, leaving visible scars on its surface after support removal. Additionally, its complexity scales with the number of points to support. We propose an algorithm based on emph{Model Synthesis} (MS) [Mer09] to generate these supports, with an implicit knowledge of object avoidance and a complexity independent of the number of points to support. Our algorithm works on a voxelized representation of the object. The supports are encoded in the algorithm with a set of labels, each representing a part of the structure (e.g. a pillar block, a bridge block, a pillar-bridge junction); and a set of adjacency constraints defining all possible label combinations in every direction. The supports for an object are generated top to bottom by repeatedly assigning labels to voxels and propagating constraints to remove inconsistent labels in the domain. The algorithm, adjacency constraints and heuristics are co-designed to avoid the need for trial-and-error or backtracking, typical of MS and similar approaches
Gallas, Mohamed-Anis. "De l'intention à la solution architecturale : proposition d'une méthode d'assistance à la prise en compte de la lumière naturelle durant les phases amont de conception". Electronic Thesis or Diss., Université de Lorraine, 2013. http://www.theses.fr/2013LORR0101.
Texto completo da fonteThe daylight illuminates the architectural space and creates the necessary conditions to accommodate human activities. The illuminating function of daylight is joined to another sensitive dimension that attributes a distinctive identity to the designed space. The control of daylight in architectural environment needs some detailed and precise characteristics about aperture and walls features. The multiplicity of these characteristics is faced with the inaccuracy and the uncertainty of the design information available during the early steps. Our research aims to propose a design support method that takes into account the early design step features and helps designers to integrate there daylight atmosphere intentions in project. We propose a design support method structured as a declarative modelling process. The declarative process helps the designer to declare his daylight intentions and to translate them to potential solutions that could be integrated in his project. This method considers the designer intentions as the main design information used to help designer during the early design steps. The proposed method provides functionalities that could operate the inaccuracy and the uncertainty of the ideas research and formalisation steps. Our design support method was implemented in a prototype design support tool. The cognitive contribution and the ability to support the design activities of the proposed tool was evaluated and analysed in an experimental design context
Brown, Ingi. "Entre firme et usagers : des biens génératifs d’usages.Théorie des biens comme espaces de conception". Thesis, Paris, ENMP, 2013. http://www.theses.fr/2013ENMP0001/document.
Texto completo da fonteDe nouveaux produits et services jouissent aujourd'hui d'un succès surprenant, alors qu'ils ne s'intègrent pas dans les canons traditionnels de l'innovation. Sans proposer de ruptures technologiques ni d'usages clairement identifiés, ces biens suscitent toutefois une large exploration d'usages nouveaux et inconnus, à l'image du service web Twitter ou du téléphone iPhone qui viennent bouleverser les pratiques quotidiennes de leurs usagers dans de nombreux domaines, y compris professionnels.La littérature apporte des réponses partielles aux enjeux soulevés par cette classe de biens, mais semble limitée par une vision des biens comme systèmes de découplages de la conception d'usages : celle-ci aurait lieu au sein de la firme par des approches de type analyse d'usage ou bien auprès d'usagers-concepteurs très compétents.Nous proposons ici une théorie qui veut intégrer ces différents apports tout en soulevant les hypothèses que nous jugeons trop restrictives sur les usagers, les biens et leurs rapports à la conception d'usage. Ce projet nous amène à rediscuter de la notion de biens pour les considérer comme des espaces de conception d'usages, à destination d'acteurs à la fois usagers et concepteurs.Ce nouveau paradigme suppose en revanche de réinterroger le rôle de la firme dans l'organisation de cette action collective de conception d'usages. La confrontation de notre modèle théorique à trois études de cas révèle que les succès que l'on connait aujourd'hui reposent sur une organisation sophistiquée des relations entre la firme et ses usagers concepteurs, ainsi qu'une ingénierie spécifique de dispositifs de conception, de formation et de coordination
Lannuzel, Thibault. "Génération Formes Utiles, étude d’un groupe de designers en France : 1945-1973". Thesis, Paris 4, 2016. http://www.theses.fr/2016PA040127.
Texto completo da fonteThe topic is focused on a main period of the history of art and French post-war design but which is though largely unknown. During this period of growth also called « Trente Glorieuses », a line of eleven young French designers impose their self in the landscape of the model’s creation. This generation tries hard to promote the design from the end of the Second World War by basing on the social functionalism’s doctrine which is defended before by Francis Jourdain, father of the French serial furniture and member of the UAM, and then by his disciples René Gabriel and Marcel Gascoin. Their communal training in the best schools or in the design offices of their eldests, the similarity of their careers and the existence of personal affinities may allow us to claim the possibility of a generational phenomenon never identified in itself yet. Together or separately, this designers desire to defend the French rationalism and a production without any artifice, but above all the collaboration of the creator and the manufacturer for relevant forms and the proclamation of the beauty in the utility. Moreover, it is with them that appears the designer status who has to conceive furniture and interior organisations of quality and which is functional and reachable for everyone. This pioneer generation, relegated at the middle ground of the design history, deserves to have their place in the genesis of a profession and a discipline from which we still learn lessons
Mognol, Pascal. "Contribution à la génération automatique de gammes en tournage : génération dirigée par évaluation progressive". Cachan, Ecole normale supérieure, 1994. http://www.theses.fr/1994DENS0019.
Texto completo da fonteProst-Boucle, Adrien. "Génération rapide d'accélerateurs matériels par synthèse d'architecture sous contraintes de ressources". Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT039/document.
Texto completo da fonteIn the field of high-performance computing, FPGA circuits are very attractive for their performance and low consumption. However, their presence is still marginal, mainly because of the limitations of current development tools. These limitations force the user to have expert knowledge about numerous technical concepts. They also have to manually control the synthesis processes in order to obtain solutions both fast and that fulfill the hardware constraints of the targeted platforms.A novel generation methodology based on high-level synthesis is proposed in order to push these limits back. The design space exploration consists in the iterative application of transformations to an initial circuit, which progressively increases its rapidity and its resource consumption. The rapidity of this process, along with its convergence under resource constraints, are thus guaranteed. The exploration is also guided towards the most pertinent solutions thanks to the detection of the most critical sections of the applications to synthesize, for the targeted execution context. This information can be refined with an execution scenarion specified by the user.A demonstration tool for this methodology, AUGH, has been built. Experiments have been conducted with several applications known in the field of high-level synthesis. Of very differen sizes, these applications confirm the pertinence of the proposed methodology for fast and automatic generation of complex hardware accelerators, under strict resource constraints. The proposed methodology is very close to the compilation process for microprocessors, which enable it to be used even by users non experts about digital circuit design. These works constitute a significant progress for a broader adoption of FPGA as general-purpose hardware accelerators, in order to make computing machines both faster and more energy-saving
Marcati, Alain. "Génération de particules de polymères à structure contrôlée par la microfluidique". Thesis, Toulouse, INPT, 2009. http://www.theses.fr/2009INPT033G/document.
Texto completo da fonteThis work is full part of process intensification : polymer particles are usually synthesized in batch reactors with solvents, surfactants and stabilizers. In these conditions, particles are obtained with large size distribution. In order to reduce size distribution, particles synthesis is then studied in a continuous process in microchannels in water, without surfactants nor surface treatment of microreactors’ walls. The micron-size scale provides indeed better control of monomer dispersion and prevents droplets coalescence which is the major reason of polydispersity in stirred tank reactors.That is why we have developped microfluidic tools and studied hydrodynamics and droplet generation into microreactors in order to synthetize polymer beads smaller than a hundred microns by direct polymerization of spherical droplets. This work also deals with new material creaction : the objective was also to produce onion-like structures for whom we could choose each layer chemical nature and thickness. We have then analysed manipulation of partciles flow to determine ways of encapsulating core particles. Finally, we also developped a new application related to polymer beads into microchannels : the creation of micropacked chromatography columns
Tissot, Régis. "Contribution à la génération automatique de tests à partir de modèles et de schémas de test comme critères de sélection dynamiques". Besançon, 2009. http://www.theses.fr/2009BESA2015.
Texto completo da fonteThis PhD thesis is a contribution to the conception of an automatic Model Based Testing (MBT) approach for test generation. The framework of our works is the BZ-TT (BZ-Testing Tools) technology, that allows for generating functional tests from models written in B. The test selection criteria implemented in BZ- TT ensure structural coverage of the model of the system to validate. It takes into account the data and control structures of the model. This approach does not allow for generating tests from properties expressing dynamic behaviors of the system such as properties based on operations sequencing. To address this problem, some works propose to involve human expertise to define "dynamic" selection criteria. Such selection criteria make it possible for the validation engineer to define strategies based on properties and aspects of the system thet he wants to validate. Our contributions explore this way, and target the complementarity with respect to the tests generated from the structural coverage of the model, in order to benefit from the resources and technology previously deployed for this goal. Our first contribution is the definition of a language for the formalization of test purposes, that allows for expressing test scenarios inspired by the properties to validate on the system. This language is based on a regular expressions-like formalism, and aims at describing scenarios by means of operation calls and symbolic states. We define a test generation method integrated to BZ- TT, so that these tools can take these new selection criteria into account. This way, we can re-use the technics of symbolic animation and of constraint solving of BZ- TT. We also benefit from the functionalities of export and concretization of the produced tests. With this method, the only additional work for the validation engineer is to define the test schemas used as selection criteria. Our last contribution is to assess the complementarity of our method with the automatic generation of tests by structural coverage of the model. We propose a method to assess the complementarity of two test suites. It is based on the computing of the coverage in terms of states and transitions of an abstraction of the system by th test suites. Finally, we apply this method to three case studies (two smart card applications and the POSIX fil management system), and we show the complementarity brought by the method
Ghorbel, Imen. "Génération de fréquences agiles pour petits objets communicants autonomes". Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4363.
Texto completo da fonteThe rapid growth of the Internet of Things (IoT) applications and the wireless sensor networks boosts the need for low cost and low power radiofrequency (RF) transceivers. The voltage-controlled oscillator (VCO) is an essential building block of several RF transceivers. Design tradeoffs have been very stringent in terms of power consumption, phase-noise, area and tuning range. In this context, the aim of this work is to propose a design method, aiming to optimize the VCO design and to improve its performances essentially in terms of power consumption and phase noise.The first part of this thesis sets a study of the elements of passive LC oscillators in CMOS technology. The second part presents a complete design method, aiming to optimize the LC-VCO performance regarding the phase noise and power consumption. The evaluation of the proposed method is carried out with some test-cases in full CMOS technology. Many RF LC-VCOs have been implemented and measured. The final part of this thesis presents a new tunable VCO suitable for multi-standards applications. The frequency tuning of the VCO is ensured using an active inductor based on CMOS inverters. The desired bandwidth can be selected while achieving low surface area and low power consumption
Lacourcière, Roxanne. "Dissidence : pour une nouvelle génération de résistance". Master's thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25326.
Texto completo da fontePetit, Dorian. "Génération automatique de composants logiciels sûrs à partir de spécifications formelles B". Valenciennes, 2003. http://www.theses.fr/2003VALE0039.
Texto completo da fonteThese works are related to the study of the code generation from B formal specifications. The main aspect that should be studied in the code generation is the modularity of the B language. We have expressed the B modularity with an Harper-Lillibridge-Leroy module system (an ML-like module system). This modelisation clarifies some aspects of the B modularity and gives us a representation of the B modules that are used during the phase of code generation. This new module system for the B language allows us to tackle a software production technique: the components based approach. This technique is often used conjointly with the design by contracts technique. Our code generation process allows to blend the design by contracts approach, the component based approach and the B method. We can take advantage of the three approaches to develop software
Ouattara, Issa. "Recherche, développement et réalisation d'un contrôleur de Fabry-Perot de nouvelle génération". Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4725.
Texto completo da fonteThe Physics of Galaxies Team of Laboratoire d'Astrophysique de Marseille (LAM) has developed a new type of Fabry-Perot, with three amplified piezoelectric actuators and three capacitive sensors to control the spacing and parallelism of mirror plates of approximately 200 µm with a positioning accuracy of 3 nm.The purpose of this manuscript, consisting of 3 parts is the control of this interferometer.The first part, consisting of Chapters 1 and 2 presents the general interferometry Fabry-Perot and then describes 3DNTT and BTFI instruments which will be installed the next generation interferometer and its associated controller. The design and implementation of a hybrid amplifier to reduce non-linearities of the piezoelectric actuators (hysteresis and creep) end this first part.The second part, Chapters 3 and 4, describes the development and implementation of the controller.For this, an approach based on codesign concept was adopted. The thus achieved controller consists of a Microzed development board whose heart is a system on chip of the 7000 series Zynq EPP (FPGA + Dual-Core ARM Cortex A9) and an interface card with converters (3 ADC and 3 DAC) and power supply circuits.For the finalization of the controller, two steps are necessary: hardware design in Xilinx Vivado and software design in Xilinx SDK.The third and final section, chapters 5 and 6 deals with the Fabry-Perot space-state modeling and its control: a classic control based on PID control and a robust and optimal control based on KALMAN filtering. This last part concludes the outlook may result from contributions of this work on the monitoring and control of the Fabry-Perot
Wang, Chenggang. "Génération des séquences de désassemblage et leur évaluation : Intégration dans un environnement de réalité virtuelle". Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENI087/document.
Texto completo da fonteIntegration of disassembly operations during product design is an important issue today. It is estimated that at the earliest stages of product design, the cost of disassembly operations almost represents 30 % of its total cost. Nowadays, disassembly operation simulation of industrial products finds a strong interest in interactive simulations through immersive and real-time schemes. In this context, in the first place, this thesis presents a method for generating the feasible disassembly sequences for selective disassembly. The method is based on the lowest levels of a disassembly product graph. Instead of considering the geometric constraints for each pair of components, the proposed method considers the geometric contact and collision relationships among the components in order to generate the so-called Disassembly Geometry Contacting Graph (DGCG). The latter is then used for disassembly sequence generation thus allowing the number of possible sequences to be reduced by ignoring any components which are unrelated to the target. A simulation framework was developed integrated in a Virtual reality environment thus allowing generating the minimum number of possible disassembly sequences. Secondly, a method for disassembly operation evaluation by 3D geometric removability analysis in a Virtual environment is proposed. It is based on seven new criteria which are: visibility of a part, disassembly angles, number of tools' changes, path orientation changing, sub-assembly stability, neck score and bending score. All criteria are presented by dimensionless coefficients automatically calculated, thus allowing evaluating disassembly sequences complexity. For this purpose, a mixed virtual reality disassembly environment (VRDE) is developed based on Python programming language, utilizing VTK (Visualization Toolkit) and ODE (Open Dynamics Engine) libraries. The framework is based on STEP, WRL and STL exchange formats. The analysis results and findings demonstrate the feasibility of the proposed approach thus providing significant assistance for the evaluation of disassembly sequences during Product Development Process (PDP). Further consequences of the present work consist in ranking the criteria according to their importance. For this purpose, moderation coefficients may be allocated to each of them thus allowing a more comprehensive evaluating method
Caglar, Alper Harun. "Structures adaptatives en fonction de la lumière : DARMIN comme outil de génération d'ambiances architecturales dynamiques". Master's thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25448.
Texto completo da fonteThis research proposes a virtual environment as a device for morphological representation of luminous ambiances generated by an adaptive and dynamic structure, linking the relationship between the outside and inside at the stage of architectural conception. This developed tool called DARMIN « Daylight Adaptive aRchitecture Modeling INterface », becomes an exploratory inductor within the creative process through its interactive system. The designer, in typologically formal exploration phase, exploits the potential and qualities of architectural space that luminous ambiances harbors. In this way, the proposed research offers the possibility of the emergence of new complex morphological responses supporting the process of design. It also allows designers to experiment with a wide range of possible solutions in a virtual laboratory, controlled design environment that enhances the creativity of the architect. Thus, the presented research is particularly interested in showing the potential of adaptive architectural structure that quantitatively and qualitatively improves the experience of internal and external space through the dynamic nature of the luminous ambiances.
Solanki, Jigar. "Approche générative conjointe logicielle-matérielle au développement du support protocolaire d’applications réseaux". Thesis, Bordeaux, 2014. http://www.theses.fr/2014BORD0301/document.
Texto completo da fonteCommunications between network applications is achieved by using rulesets known as protocols. Protocol messages are managed by the application layer known as the protocol parsing layer or protocol handling layer. Protocol parsers are coded in software, in hardware or based on a co-design approach. They represent the interface between the application logic and the outside world. Thus, they are critical components of network applications. Global performances of network applications are directly linked to the performances of their protocol parser layers.Developping protocol parsers consists of translating protocol specifications, written in a high level language such as ABNF towards low level software or hardware code. As the use of embedded systems is growing, hardware ressources become more and more available to applications on systems on chip (SoC). Nonetheless, developping a network application that uses hardware ressources is challenging, requiring not only expertise in hardware design, but also a knowledge of the protocols involved and an understanding of low-level network programming.This thesis proposes a generative hardware-software co-design based approach to the developpement of network protocol message parsers, to improve their performances without increasing the expertise the developper may need. Our approach is based on a dedicated language, called Zebra, that generates both hardware and software elements that compose protocol parsers. The necessary expertise is deported in the use of the Zebra language and the generated hardware components permit to improve global performances.The contributions of this thesis are as follows : We provide an analysis of network protocols and applications. This analysis allows us to detect the elements which performances can be improved using hardware ressources. We present the domain specific language Zebra to describe protocol handling layers. Software and hardware components are then generated according to Zebra specifications. We have built a SoC running a Linux operating system to assess our approach.We have designed hardware accelerators for different network protocols that are deployed and driven by applications. To increase sharing of parsing units between several tasks, we have developped a middleware that seamlessly manages all the accesses to the hardware components. The Zebra middleware allows several clients to access the ressources of a hardware accelerator. We have conducted several set of experiments in real conditions. We have compared the performances of our approach with the performances of well-knownprotocol handling layers. We observe that protocol handling layers baded on our approach are more efficient that existing approaches
Ghorbel, Imen. "Génération de fréquences agiles pour petits objets communicants autonomes". Electronic Thesis or Diss., Aix-Marseille, 2016. http://www.theses.fr/2016AIXM4363.
Texto completo da fonteThe rapid growth of the Internet of Things (IoT) applications and the wireless sensor networks boosts the need for low cost and low power radiofrequency (RF) transceivers. The voltage-controlled oscillator (VCO) is an essential building block of several RF transceivers. Design tradeoffs have been very stringent in terms of power consumption, phase-noise, area and tuning range. In this context, the aim of this work is to propose a design method, aiming to optimize the VCO design and to improve its performances essentially in terms of power consumption and phase noise.The first part of this thesis sets a study of the elements of passive LC oscillators in CMOS technology. The second part presents a complete design method, aiming to optimize the LC-VCO performance regarding the phase noise and power consumption. The evaluation of the proposed method is carried out with some test-cases in full CMOS technology. Many RF LC-VCOs have been implemented and measured. The final part of this thesis presents a new tunable VCO suitable for multi-standards applications. The frequency tuning of the VCO is ensured using an active inductor based on CMOS inverters. The desired bandwidth can be selected while achieving low surface area and low power consumption
Valderrama, Carlos. "Prototype virtuel pour la génération des architectures mixtes logicielles-matérielles". Grenoble INPG, 1998. http://www.theses.fr/1998INPG0121.
Texto completo da fonteThe objective of this work is to develop a methodology for the generation of flexible and modular architectures for distributed systems. This approach (also called " virtual prototyping ") is an essential stage in the process of joint design (codesign) of mixed software/hardware systems. Virtual prototyping takes as input a heterogeneous architecture made up of a whole of distributed modules resulting from software/hardware partitioning. It generates executable descriptions for software and hardware elements. Research approaches in this field are justified by the evolution of technology, the urgent need for prototypes to validate the specification, and by the availability of tools and synthesis environments for the design of software and hardware parts. One of the major difficulties of virtual prototyping is that it allows at the same time to handle both, software and hardware. This work describes a strategy of virtual prototyping for the cosynthesis (generation of the modules material and software on an architectural platform) and cosimulation (i. E. The joint simulation of these two kind of components) in a unified environment, the development of a distributed and flexible cosimulation environment allowing the use of several simulation tools and languages, the generation of hardware/software synthesizable models and mono-processor architecture software generation for a set of communicating processes. This approach, presented in the ED&TC conference, got the best paper award in 1995. The tools developed during this thesis were put into practice in the Cosmos codesign environment. One of them was transferred to SGS-Thomson Microelectronics. The tools were also used for the Europeans projects COMITY (particularly used by Aerospace the Missiles in Toulouse and Intracom in Greece) and CODAC, and by other groups like the FZI of the university of Tübingen and PSA in Paris
Stefanakis, Themistoklis. "Tsunami amplification phenomena". Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2013. http://tel.archives-ouvertes.fr/tel-00920527.
Texto completo da fonteKabac, Milan. "A Design-Driven Methodology for the Development of Large-Scale Orchestrating Applications". Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0133/document.
Texto completo da fonteOur environment is increasingly populated with large amounts of smart objects. Some monitor free parking spaces, others analyze material conditions in buildings or detect unsafe pollution levels in cities. The massive amounts of sensing and actuation devices constitute large-scale infrastructures that span over entire parking lots, campuses of buildings or agricultural fields. Despite being successfully deployed in a number of domains, the development of applications for such infrastructures remains challenging. Considerable knowledge about the hardware/network specificities of the sensor infrastructure is required on the part of the developer. To address this problem, software development methodologies and tools raising the level of abstraction need to be introduced to allow non-expert developers program applications. This dissertation presents a design-driven methodology for the development of applications orchestrating massive amounts of networked objects. The methodology is based on a domain-specific design language, named DiaSwarm that provides high-level, declarative constructs allowing developers to deal with masses of objects at design time, prior to programming the application. Generative programming is used to produce design-specific programming frameworks to guide and support the development of applications in this domain. The methodology integrates the parallel processing of large-amounts of data collected from masses of sensors. We introduce specific language declarations resulting in the generation of programming frameworks based on the MapReduce programming model. We furthermore investigate how design can be used to make explicit the resources required by applications as well as their usage. To match the application requirements to a target sensor infrastructure, we consider design declarations at different stages of the application lifecycle. The scalability of this approach is evaluated in an experiment, which shows how the generated programming frameworks relying on the MapReduce programming model are used for the efficient processing of large datasets of sensor readings. We examine the effectiveness of the proposed approach in dealing with key software engineering challenges in this domain by implementing application scenarios provided to us by industrial partners. We solicited professional programmers to evaluate the usability of our approach and present quantitative and qualitative data from the experiment
Lasnier, Gilles. "Une approche intégrée pour la validation et la génération de systèmes critiques par raffinement incrémental de modèles architecturaux". Thesis, Paris, ENST, 2012. http://www.theses.fr/2012ENST0036/document.
Texto completo da fonteThe increasing complexity of distributed realtime and embedded (DRE) systems and their implication in various domains imply new design and development methods. In safety- criticial domains such as space, aeronautical, transport or medicine, their failure could result in the failure of the mission, or in dramatic damages such as human losses. This particular class of systems comes with strong requirements to satisfy safety, reliability and security properties. The Model-driven Engineering (MDE) introduces the concept of «model» - an abstract description of the system and a set of tools (editor, transformation engine, code generator) to simplify and automatize the design, the validation and the implementation of the system. Thus, various abstractions are realized using different domain-specific modeling languages in order to assess one particular aspect of the system and to re-use model-based analysis tools and generative technologies. These various representations may share some commonalities but the consistency between them is hard to validate (for example : Is the analyzed system the same as the generated one ?).This PhD thesis leverages MDE concepts and mechanisms, to enhance the reliability of the model-based development process of DRE systems. Our approach is based on the definition of the architectural and behavioral modeling language AADLHI Ravenscar, a restriction of AADL (Architecture Analysis & Design Language) and its behavioral annex. This subset of AADL constructs, comes up with a semantic close to the one of an imperative programming language, to drive both the analysis and the code generation of the application components and its relying execution platform (middleware) components
Dabbebi, Ines. "Conception et génération dynamique de tableaux de bord d’apprentissage contextuels". Thesis, Le Mans, 2019. http://www.theses.fr/2019LEMA1040/document.
Texto completo da fonteThis work is part of a broader issue of Learning Analytics (LA). It is particularly carried out within the context of the HUBBLE project, a national observatory for the design and sharing of data analysis processes. We are interested in communicating data analysis results to users by providing LA dashboards (LAD). Our main issue is the identification of generic LAD structures in order to generate dynamically tailored LAD. These structures must be generic to ensure their reuse, and adaptable to users’ needs. Existing works proposed LAD which remains too general or developed in an adhoc way. According to the HUBBLE project, we want to use identified decisions of end-users to generate dynamically our LAD. We were interested in the business intelligence area because of the place of dashboards in the decision-making process. Decision-making requires an explicit understanding of user needs. That's why we have adopted a user-centered design (UCD) approach to generate adapted LAD. We propose a new process for capturing end-users’ needs, in order to elaborate some models (Indicator, visualization means, user, pattern, …). These models are used by a generation process implemented in a LAD dynamic generator prototype. We conducted an iterative evaluation phase. The objective is to refine our models and validate the efficiency of our generation process. The second iteration demonstrates the impact of the decision on the LAD generation. Thus, we can confirm that the decision is considered as a central element for the generation of LADs
Brun, Juliette. "Modéliser le pouvoir expansif de la structuration des connaissances en conception innovante : mise en évidence des effets génératifs du K-preordering grâce à l'étude du non-verbal". Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEM007/document.
Texto completo da fonteThe thesis investigates the generative power of knowledge structuration for innovative design. Analyzing the generativity of non-verbal knowledge structures - especially, architectural drawings -, this work identifies a new design method by showing that the transformation of links between knowledge bases fosters concept generation. In particular, a restructuration that aims to design a splitting structure - a structure avoiding modular and deterministic links between knowledge bases - has a strong generative power. During collective creativity sessions, non-verbal tools such as sketches, pictures or 3D-printing, can enhance knowledge restructuration: however, three necessary conditions, which are presented in the thesis, have to be met in order to ensure performance of the non-verbal tools used during the session. Moreover, this generative restructuration - also called K-preordering - differs from the classic design exploration by alternative concepts generation. But the two design modes are not mutually exclusive: the thesis proposes a design process that alternates K-preordering and concept generation. This process is applied in two studies, which were led as action research and intended to foster the reorganization of knowledge structures that were both stabilized and shared at the organizational level. In particular, these studies show how such a process helps enhancing the design of transdisciplinary research programs
Emilien, Arnaud. "Création interactive de mondes virtuels : combiner génération procédurale et contrôle utilisateur intuitif". Thèse, Grenoble, 2014. http://hdl.handle.net/1866/11661.
Texto completo da fonteLa complexité des mondes virtuels ne cesse d’augmenter et les techniques de modélisation classiques peinent à satisfaire les contraintes de quantité nécessaires à la production de telles scènes. Les techniques de génération procédurale permettent la création automatisée de mondes virtuels complexes à l’aide d’algorithmes, mais sont souvent contre-intuitives et par conséquent réservées à des artistes expérimentés. En effet, ces méthodes offrent peu de contrôle à l’utilisateur et sont rarement interactives. De plus, il s’agit souvent pour l’utilisateur de trouver des valeurs pour leurs nombreux paramètres en effectuant des séries d’essais et d’erreurs jusqu’à l’obtention d’un résultat satisfaisant, ce qui est souvent long et fastidieux. L’objectif de cette thèse est de combiner la puissance créatrice de la génération procédurale avec un contrôle utilisateur intuitif afin de proposer de nouvelles méthodes interactives de modéli- sation de mondes virtuels. Tout d’abord, nous présentons une méthode de génération procédurale de villages sur des terrains accidentés, dont les éléments sont soumis à de fortes contraintes de l’environnement. Ensuite, nous proposons une méthode interactive de modélisation de cascades, basée sur un contrôle utilisateur fin et la génération automatisée d’un contenu cohérent en regard de l’hydrologie et du terrain. Puis, nous présentons une méthode d’édition de terrains par croquis, où les éléments caractéristiques du terrain comme les lignes de crêtes sont analysés et déformés pour correspondre aux silhouettes complexes tracées par l’utilisateur. Enfin, nous proposons une métaphore de peinture pour la création et l’édition interactive des mondes virtuels, où des tech- niques de synthèse d’éléments vectoriels sont utilisées pour automatiser la déformation et l’édition de la scène tout en préservant sa cohérence.
The complexity required for virtual worlds is always increasing. Conventional modeling tech- niques are struggling to meet the constraints and efficiency required for the production of such scenes. Procedural generation techniques use algorithms for the automated creation of virtual worlds, but are often non-intuitive and therefore reserved to experienced programmers. Indeed, these methods offer fewer controls to users and are rarely interactive. Moreover, the user often needs to find values for several parameters. The user only gets indirect control through a series of trials and errors, which makes modeling tasks long and tedious. The objective of this thesis is to combine the power of procedural modeling techniques with intuitive user control towards interactive methods for designing virtual worlds. First, we present a technique for procedural modeling of villages over arbitrary terrains, where elements are subjected to strong environmental constraints. Second, we propose an interactive technique for the procedural modeling of waterfall sceneries, combining intuitive user control with the automated generation of consistent content, in regard of hydrology and terrain constraints. Then, we describe an interactive sketch-based technique for editing terrains, where terrain features are extracted and deformed to fit the user sketches. Finally, we present a painting metaphor for virtual world creation and editing, where methods for example-based synthesis of vectorial elements are used to automate deformation and editing of the scene while maintaining its consistency.
Chaisemartin, Philippe. "Contribution à la génération automatique de plans de masse". Phd thesis, Grenoble 1, 1986. http://tel.archives-ouvertes.fr/tel-00322531.
Texto completo da fonteHamdi, Belgacem. "Outils CAO pour la génération automatique de parties opératives auto-controlables". Grenoble INPG, 1994. http://www.theses.fr/1994INPG0041.
Texto completo da fonteKebichi, Omar. "Techniques et outils de CAO pour la génération automatique de test intégré pour RAMs". Grenoble INPG, 1994. http://www.theses.fr/1994INPG0062.
Texto completo da fonteDang, Dinh Khanh. "Analyse de performance des technologies sans fil pour les systèmes embarqués avioniques de nouvelle génération". Thesis, Toulouse, ISAE, 2014. http://www.theses.fr/2014ESAE0057/document.
Texto completo da fonteThe current avionics communication architecture inherits significant weight and integration costs due to the increasing quantity of wires and connectors. In addition, avionics interconnects are still subject to structural failure and fire hazard which decrease reliability and ramify the maintenance. To cope with these arising issues, integrating wireless technologies in avionics context is proposed in this thesis as a main solution to decrease the wiring-related weight and complexity.To achieve this aim, we design an alternative backup avionic network based on HR-UWB technology implementing a TDMA arbitration protocol and various reliability mechanisms to guarantee predictability and reliability requirements.Afterwards, we conduct analytical performance evaluation of our proposal in terms of delays. Moreover, we investigate different solutions to reach further enhancements on the system scalability and reliability.Finally, the validation of our proposal through a realistic avionics case study has been conduced, and the obtained results highlight its ability to guarantee the system requirements in terms of predictability and reliability
Stauff, Nicolas. "Etude conceptuelle d’un cœur de quatrième génération, refroidi au sodium, à combustible de type carbure". Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112284.
Texto completo da fonteCompared with earlier plant designs (Phénix, Super-Phénix, EFR), GEN IV Sodium-cooled Fast Reactor requires improved economics while meeting safety and non-proliferation criteria. Mixed Oxide (U-Pu)O2 fuels are considered as the reference fuels due to their important and satisfactory feedback experience. However, innovative carbide (U-Pu)C fuels can be considered as serious competitors for a prospective SFR fleet since carbide-fueled SFRs can offer another type of optimization which might overtake on some aspects the oxide fuel technology. The goal of this thesis is to reveal the potentials of carbide by designing an optimum carbide-fueled SFR with competitive features and a naturally safe behavior during transients. For a French nuclear fleet, a 1500 MW(e) break-even core is considered.To do so, a multi-physic approach was developed taking into account neutronics, fuel thermo-mechanics and thermal-hydraulic at a pre-design stage. Simplified modeling with the calculation of global neutronic feedback coefficients and a quasi-static evaluation was developed to estimate the behavior of a core during overpower transients, loss of flow and/or loss of heat removal transients. The breakthrough of this approach is to provide the designer with an overall view of the iterative process, emphasizing the well-suited innovations and the most efficient directions that can improve the SFR design project.This methodology was used to design a core that benefits from the favorable features of carbide fuels. The core developed is a large carbide-fueled SFR with high power density, low fissile inventory, break-even capability and forgiving behaviors during the unscrammed transients studied that should prevent using expensive mitigate systems. However, the core-peak burnup is unlikely to significantly exceed 100 MWd/kg because of the large swelling of the carbide fuel leading to quick pellet-clad mechanical interaction and the low creep capacity of carbide. Moderate linear power fuel pins require both a large initial sodium-bonded gap, delaying the fuel clad mechanical interaction, and a clad able to accommodate it by its high irradiation creep capacity.Irradiated carbide fuel performances predicted for an industrial SFR design are lower than the one obtained in the FBTR reactor irradiations, where 155 MWd/kg was obtained. This difference was studied and partly explained by the lower flux of experimental reactor delaying the embrittlement criterion. Innovative designs are now being considered to enhance the carbide-fueled pins burnup performance of industrial cores. The first innovative design uses a buffer technology to induce a delay in getting to the fuel clad mechanical interaction. The second innovative design is a core using high plutonium content so as to optimize the fluence over burnup ratio. Preliminary results show that a burnup higher than 100 MWd/kg can be reached.As a conclusion, this global approach has proven to be efficient in revealing the benefits gained using carbide fuel in a SFR. An optimum SFR core was designed exhibiting economic competitiveness while having inherent behavior during transient and reaching high burnup performance
Da, Silva Joao Lucas. "Design and control of a multicell interleaved converter for a hybrid photovoltaic-wind generation system". Phd thesis, Toulouse, INPT, 2017. http://oatao.univ-toulouse.fr/19318/7/DASILVA_JoaoLucas.pdf.
Texto completo da fonteGhosh, Amar Nath. "Design, simulations et expériences de génération de supercontinuum dans l'infrarouge moyen dans des fibres à cristaux phoniques en verre souple". Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCD035.
Texto completo da fonteThis doctoral thesis, funded within the framework of a European Marie-Curie H2020 SUPUVIR project, focuses on the design and fabrication of new photonic crystal fibers from infrared soft glasses making it possible to produce a wide emission spectrum in the mid-infrared (IR) wavelength region through generation of supercontinuum (SC). Applications of mid-IR SC sources cover infrared spectroscopy, optical detection of chemical and molecular species, materials processing, and biomedical imaging. An alternative to conventional thermal light sources, mid-IR sources have broad spectral bandwidth like a lamp or Globar and high brightness, which is more than 20 times of the sun focussed in a small spot similar to a laser. Several optical fibers with different photonic structures and different soft glasses have been produced and studied. In collaboration with the Institute of Electronic Materials Technology in Warsaw, heavy metal-oxide glass (PBG81) microstructured fibers were first developed and with these fibers we demonstrated the efficient generation of SC from 0.89 to 2.5 µm, limited by the absorption of the glass. Then, in partnership with the University of Rennes and the Technical University of Denmark, we fabricated microstructured fibers based on chalcogenide glasses (As38Se62) with polarization-maintaining property. These fibers have made it possible to generate a linearly polarized 3.1 to 6 µm supercontinuum. SC bandwidth was further extended between 1 µm and 7.4 µm in taper fibers produced from Ge10As22Se68 glass. The laser power handling capacities of these chalcogenide fibers were also analyzed. Finally, we have developed a compact mid-IR SC system using a fiber cascade comprising of silica, fluoride, and chalcogenide fiber, pumped by a fiber laser at 1.55 µm, and making it possible to extend the emission range from 2 to 10 µm. This research work thus constitutes an important step towards the development of stable and compact fiber SC sources for various applications in the mid-infrared
Lasnier, Gilles. "Une approche intégrée pour la validation et la génération de systèmes critiques par raffinement incrémental de modèles architecturaux". Electronic Thesis or Diss., Paris, ENST, 2012. http://www.theses.fr/2012ENST0036.
Texto completo da fonteThe increasing complexity of distributed realtime and embedded (DRE) systems and their implication in various domains imply new design and development methods. In safety- criticial domains such as space, aeronautical, transport or medicine, their failure could result in the failure of the mission, or in dramatic damages such as human losses. This particular class of systems comes with strong requirements to satisfy safety, reliability and security properties. The Model-driven Engineering (MDE) introduces the concept of «model» - an abstract description of the system and a set of tools (editor, transformation engine, code generator) to simplify and automatize the design, the validation and the implementation of the system. Thus, various abstractions are realized using different domain-specific modeling languages in order to assess one particular aspect of the system and to re-use model-based analysis tools and generative technologies. These various representations may share some commonalities but the consistency between them is hard to validate (for example : Is the analyzed system the same as the generated one ?).This PhD thesis leverages MDE concepts and mechanisms, to enhance the reliability of the model-based development process of DRE systems. Our approach is based on the definition of the architectural and behavioral modeling language AADLHI Ravenscar, a restriction of AADL (Architecture Analysis & Design Language) and its behavioral annex. This subset of AADL constructs, comes up with a semantic close to the one of an imperative programming language, to drive both the analysis and the code generation of the application components and its relying execution platform (middleware) components
Jousselin, Baptiste. "Développement d'une méthodologie de génération de trajectoires d'ébauche en usinage 5 axes". Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPAST061.
Texto completo da fonteThe complexity of the parts to be manufactured leads to an indispensable recourse to digital media for trajectory planning such as Computer Aided Manufacturing (CAM) software. However, a real imbalance is noted between the wide range of 5-axis finishing operations currently available in CAM software and the lack of solutions for the roughing sequence, which can though improve the productivity of the overall machining process.This thesis manuscript therefore tackles the development of a simultaneous 5-axis toolpath planning methodology for the roughing sequence. Guiding curves are used to create a geometric path which allows the tool to travel the whole volume to remove, and thus ensure a maximum material removal. Guiding curves are built automatically from the numerical model of the workpiece and implemented algorithms for calculating curve and surface offsets using vector methods or scalar fields. The orientations of the tool along the guiding curves are then determined by a Sequential Quadratic Programming algorithm, according to criteria of productivity, tool behaviour, and surface quality, by searching for a specific parameterization of the guiding curves.The implementation of the 5-axis roughing strategy in the TopSolid CAM software enabled machining tests with toroidal cutter, which allowed the strategy's validation on typical parts of the aerospace industry
Bourgos, Paraskevas. "Rigorous Design Flow for Programming Manycore Platforms". Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENM012/document.
Texto completo da fonteThe advent of many-core platforms is nowadays challenging our capabilities for efficient and predictable design. To meet this challenge, designers need methods and tools for guaranteeing essential properties and determining tradeoffs between performance and efficient resource management. In the process of designing a mixed software/hardware system, functional constraints and also extra-functional specifications should be taken into account as an essential part for the design of embedded systems. The impact of design choices on the overall behavior of the system should also be analyzed. This implies a deep understanding of the interaction between application software and the underlying execution platform. We present a rigorous model-based design flow for building parallel applications running on top of many-core platforms. The flow is based on the BIP - Behavior, Interaction, Priority - component framework and its associated toolbox. The method allows generation of a correct-by-construction mixed hardware/software system model for manycore platforms from an application software and a mapping. It is based on source-to-source correct-by-construction transformations of BIP models. It provides full support for modeling application software and validation of its functional correctness, modeling and performance analysis of system-level models, code generation and deployment on target many-core platforms. Our design flow is illustrated through the modeling and deployment of various software applications on two different hardware platforms; MPARM and platform P2012/STHORM. MPARM is a virtual ARM-based multi-cluster manycore platform, configured by the number of clusters, the number of ARM cores per cluster, and their interconnections. On MPARM, the software applications considered are the Cholesky factorization, the MPEG-2 decoding, the MJPEG decoding, the Fast Fourier Transform and the Demosaicing algorithm. Platform 2012 (P2012/STHORM) is a power efficient manycore computing fabric, which is highly modular and based on multiple clusters capable of aggressive fine-grained power management. As a case study on P2012/STHORM, we used the HMAX algorithm. Experimental results show the merits of the design flow, notably performance analysis as well as correct-by-construction system level modeling, code generation and efficient deployment
Marin, Philippe. "Exploration des mécanismes évolutionnaires appliqués à la conception architecturale : mise en oeuvre d'un algorithme génétique guidé par les qualités solaires passives de l'enveloppe". Thesis, Vandoeuvre-les-Nancy, INPL, 2010. http://www.theses.fr/2010INPL022N/document.
Texto completo da fonteThis research tackles the exploration and the qualification of evolutionary mechanisms applied to the architectural design. Here, it is the environmental qualities and more particularly the passive solar qualities of the envelope of the building that will guide the evolutionary process. We become attached more particularly to the initial phases of the conception, and we try to specify a aided digital tool of facilitating and stimulating a creative design. Having established and structured the knowledge on the processes of conception, on the creativity, on the thermal qualities and on the evolutionary methods, we propose a prototypal tool, based on an genetic algorithm and implanted in a modeller software. This one was experimented in the educational environment, and led to us to characterize the modalities of creation and conceptualization of the architectural shape within the framework of an evolutionary instrumentation.So we note the cognitive fall of an implicit thought towards an explicit thought as a main characteristic of the generative tools. Furthermore we insist on the importance of the significant indecision as essential constituent of the creation. Finally we propose the notion of "transform" as characteristic element of a thought of the process and the multiplicity. This "meta-shape" would arise from the description of the conditions of shaping through the parameterisation of the behaviours at the limits and from modalities of emergence
Angelini, Philippe. "Contribution à l'étude de nouvelles technologies de co-packaging et de co-design appliquées à la réalisation de modules photorécepteurs pour les systèmes de télécommunications de prochaine génération". Thesis, Limoges, 2017. http://www.theses.fr/2017LIMO0023/document.
Texto completo da fonteThis thesis falls within the scope of high-speed short-reach optical communication where the growing need in data transfer forces the current architectures to evolve as quickly. Acces network and data-center components and subsystems must follow this growth, especially on the photoreceiver side. 40 Gb{s and beyond high-speed communications are limited by the current photoreceiver architecture, which, due to the integration of both of its main functions (photodetection[PD]/amplification[TIA]), limits the maximum achievable bandwitdh. In order to reduce the amount of components and price caused by multi-architectures, photoreceivers bandwidth must be increased. Two solutions are proposed so that the photoreceiver performances can be optimized : A co-packaging approach in which both main functions of the photoreceiver are considered as black boxes to which must be added an external circuit allowing to increase the bandwidth, and a co-design approach in which a new transimpedance amplifier (TIA) is designed, integrating a pre-equalizing function based on the photodiode characteristics, allowing an enhancement of the photoreceiver bandwitdh
Wang, Zhiping. "Constructive generative design methods for qualified additive manufacturing". Thesis, Ecole centrale de Nantes, 2021. https://tel.archives-ouvertes.fr/tel-03670417.
Texto completo da fonteAdditive manufacturing (AM) technologies give more and more design freedom to designers and engi-neers to design and define highly complex geometries and material compositions. Due to a layer-by-layer processing, the constraints, methods, tools and processes of design in AM are different from that in traditional manufacturing processes. Traditional design methods and tools cannot meet the needs of design in AM. Therefore, a new re-search field, design for AM (DfAM), has emerged to serve this need. However, existing DfAM methods are either guidelines or pure computation-based, which have limited consideration of coupled constraints along the AM digital processing chain and are difficult to ensure manufactura-bility of design in AM. To obtain qualified design in AM, this research focuses on three typical existing problems in DfAM domain: Firstly, how to ensure manufacturability in (topology optimization) TO process? Secondly, how to design support structures with lightweight, easy-to-remove for post-processing and friendly heat-diffusion properties to ensure shape accuracy and improve surface roughness of printed parts? Finally, how to avoid accuracy loss in print-ing preparation of complex lattice structures and ensure their manufacturability in design?To solve the three identified problems, this research developed a set of new constructive genera-tive design methods: 1. CSG-based generative design method to ensure manufacturability in light-weight topology optimization; 2. Pattern-based constructive generative design method to optimize support structure design and 3. Toolpath-based inversed constructive design to directly ob-tain processing models of corresponding complex lattice or porous structures with qualified print-ing toolpaths. The three proposed methods can well embed AM process constraints, realize para-metric control and save computation cost in design process to obtain a set of candidate design solutions with ensured manufacturability. A set of comparison studies with existing DfAM meth-ods and a couple of experiment case studies in medical applications demonstrated the methods’ advantages. These constructive methods may have large application potential to be adopted as design and decision making tools for other industrial applications when qualified DfAM is required
Duarte, Ricardo de Oliveira. "Techniques de conception et outils de CAO pour la génération des parties opératives auto-controlables". Grenoble INPG, 1997. http://www.theses.fr/1997INPG0068.
Texto completo da fonteBourguet, Vincent. "Conception d'une bibliothèque de composants analogiques pour la synthèse orientée layout". Paris 6, 2007. http://www.theses.fr/2007PA066299.
Texto completo da fonteMarin, Philippe. "Exploration des mécanismes évolutionnaires appliqués à la conception architecturale : mise en oeuvre d'un algorithme génétique guidé par les qualités solaires passives de l'enveloppe". Electronic Thesis or Diss., Vandoeuvre-les-Nancy, INPL, 2010. http://www.theses.fr/2010INPL022N.
Texto completo da fonteThis research tackles the exploration and the qualification of evolutionary mechanisms applied to the architectural design. Here, it is the environmental qualities and more particularly the passive solar qualities of the envelope of the building that will guide the evolutionary process. We become attached more particularly to the initial phases of the conception, and we try to specify a aided digital tool of facilitating and stimulating a creative design. Having established and structured the knowledge on the processes of conception, on the creativity, on the thermal qualities and on the evolutionary methods, we propose a prototypal tool, based on an genetic algorithm and implanted in a modeller software. This one was experimented in the educational environment, and led to us to characterize the modalities of creation and conceptualization of the architectural shape within the framework of an evolutionary instrumentation.So we note the cognitive fall of an implicit thought towards an explicit thought as a main characteristic of the generative tools. Furthermore we insist on the importance of the significant indecision as essential constituent of the creation. Finally we propose the notion of "transform" as characteristic element of a thought of the process and the multiplicity. This "meta-shape" would arise from the description of the conditions of shaping through the parameterisation of the behaviours at the limits and from modalities of emergence
Clair, Romain. "Etude de méthodes de production d'art génératif et de leur application pour la conception d'outils de création artistique accessibles". Thesis, Tours, 2010. http://www.theses.fr/2010TOUR4026/document.
Texto completo da fonteStarting from a survey of algorithmic methods for automatic artistic creation, our works deals with adaptations of these methods to provide accessible art creation forms, focusing on music and computer drawing.the development of accessible computer software requires some constraints. Following these constraints and using adapted automatic art production systems, notably based on artificial ant colony algorithms, we developed two computer programs.The first one is a virtual music instrument, allowing most people to play music and providing and automatic accompaniment.The second one is a drawing workshop with generative methods-based tools provide complex results from simple actions.This PhD thesis details the development of this two programs and their evaluations, with real users meetings
Sabouni, Imad. "Génération de modules dédiés aux circuits de communication de contrôle-commande : une étude de conception appliquée dans le cadre de la voiture sûre PROMETHEUS". Grenoble INPG, 1992. http://www.theses.fr/1992INPG0143.
Texto completo da fonteJamier, Robert. "Génération automatique de parties opératives de circuits VLSI de type microprocesseur". Phd thesis, Grenoble INPG, 1986. http://tel.archives-ouvertes.fr/tel-00322276.
Texto completo da fonteBignon, Alain. "Génération conjointe de commandes et d'interfaces de supervision pour systèmes sociotechniques reconfigurables". Phd thesis, Université de Bretagne Sud, 2012. http://tel.archives-ouvertes.fr/tel-00735869.
Texto completo da fonteMba, Mathieu Leonel. "Génération automatique de plate-forme matérielles distribuées pour des applications de traitement du signal". Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS341.
Texto completo da fonteLocal languages or mother tongues of individuals play an essential role in their fulfillment in their various socio-economic activities. African languages and specifically Cameroonian languages are exposed to disappearance in favor of foreign languages adopted as official languages after independence. This is why it is essential to digitalize and integrate them into the majority of dematerialized services for their sustainability. Speech recognition, widely used as a human-machine interface, can be not only a tool for integrating local languages into applications but also a tool for collecting and digitizing corpora. Embedded systems are the preferred environment for deploying applications that use this human-machine interface. This implies that it is necessary to take measures (through the reduction of the reaction time) to satisfy the real-time constraint very often met in this type of application. Two approaches exist for the reduction of the application's response time, namely parallelization and the use of efficient hardware architectures. In this thesis, we exploit a hybrid approach to reduce the response time of an application. We do this by parallelizing this application and implementing it on a reconfigurable architecture. An architecture whose implementation languages are known to be low-level. Moreover, given the multitude of problems posed by the implementation of parallel systems on reconfigurable architecture, there is a problem with design productivity for the engineer. In this thesis, to implement a real-time speech recognition system on an embedded system, we propose an approach for the productive implementation of parallel applications on reconfigurable architecture. Our approach exploits MATIP, a platform-based design tool, as an FPGA Overlay based on high-level synthesis. We exploit this approach to implement a parallel model of a feature extraction algorithm for the recognition of tonal languages (characteristic of the majority of Cameroonian languages). The experimentation of this implementation on isolated words of the Kóló language, in comparison to other implementations (software version and hardware IP), shows that our approach is not only productive in implementation time but also the obtained parallel application is efficient in processing time. This is the reason why we implemented XMATIP an extension of MATIP to make this approach compatible with hardware-software co-design and co-synthesis
Ben, Jemaa Fatma. "Design and optimization of next-generation carrier-grade wi-fi networks". Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066226/document.
Texto completo da fonteAs Wi-Fi is gaining a lot of momentum in today’s networks as well as in future networks, new carrier-grade requirements are emerging to support future user expectations and provide high-performance Wi-Fi networks. In this context, we investigate several problems surrounding the design and optimization of carrier-grade next-generation Wi-Fi networks. In the first stage, our objective is to improve the Wi-Fi user experience and offer to him a personalized and seamless access to Wi-Fi networks and services. For this, we propose an extension to the IEEE 802.11 management frames to enable venue service discovery prior to Wi-Fi association while avoiding channel overhead. We define also a set of extensible service labels to uniquely and globally identify the most known venue-based services. In the second stage, we deal with network architecture and management issues in next-generation carrier Wi-Fi environment. More specifically, we first propose a novel carrier-managed Wi-Fi architecture that leverages NFV and Edge Cloud Computing concepts. We aim through this architecture to bring more agility and adaptability and improve user perceived QoS by placing network functions and certain services close to end-users. To address some major management issues in this proposed architecture, we then propose placement and provisioning strategies of Virtual Network Functions based on QoS requirements. These strategies can also be applied to any edge-central wireless carrier architecture, since they do not make any assumption about the underlying wireless technology
Benhima, Abderrahim. "Contribution à l'optimisation dynamique de mouvements de robots-manipulateurs avec génération automatique des équations du problème optimal". Poitiers, 1989. http://www.theses.fr/1989POIT2278.
Texto completo da fonteRobert, Rémi. "Étude des mécanismes contrôlant l’expression des gènes HOX et implications pour la génération in vitro de tissus humains". Electronic Thesis or Diss., Sorbonne université, 2023. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2023SORUS399.pdf.
Texto completo da fonteDuring embryogenesis, the formation of the vertebrate body plan depends on the spatial organization of different cell types along the anterior-posterior axis. This process is orchestrated by HOX transcription factors, which are differentially expressed along this axis, conferring positional identity on developing tissues. HOX patterns of expression are initiated by the sequential activation of HOX genes in axial progenitors, a population of stem cells fueling the progressive elongation of the body of developing embryos, forming notably the somites and the spinal cord. In parallel with the progressive induction of this gene family, these progenitors generate increasingly caudal structures, transforming the temporal sequence of activation into spatial domains of expression along the anterior-posterior axis. Nevertheless, the mechanisms that regulate the temporality of this induction and its transformation into spatial domains remain poorly understood, particularly in humans. To address these questions, during my thesis I generated progenitors from human pluripotent stem cells that display the molecular and functional characteristics of axial progenitors. Indeed, we have shown that these progenitors sequentially activate HOX genes and can give rise to organoids recapitulating multiple aspects of the generation and organization of the anterior-posterior axis, such as the formation of somites surrounding a neural tube along which the spatial expression patterns of several HOXs are recapitulated. Using these in vitro-produced axial progenitors, we first demonstrated that the tempo of induction of HOX genes is dynamically modulated by the graded activity of two extrinsic factors, FGFs and GDF11, which are sequentially expressed in the caudal region of vertebrate embryos during development. Then, we showed that 1) activated HOX genes are direct targets of signaling pathways downstream of these factors and 2) that the speed of activation of genes expressed later and later is determined by the duration of pathway activation in axial progenitors, a property of the pathways regulated by intrinsic negative feedback mechanisms. Overall, my results suggest a new model in which the timing of HOX gene activation is an emergent property of the dynamics of signaling pathways downstream of extrinsic factors. In parallel, my studies have led to improved cellular and tissue engineering of trunk cells from human pluripotent stem cells, culminating in protocols for generating the different motor neuron subtypes present along the body axis, and a new organoid model mimicking morphogenesis and the formation of cellular diversity along the human body axis
Mawissi, Kwamivi. "Modèles de représentation et de définition d'outillages de forme complexe : application à le génération automatique de processus d'usinage". Cachan, Ecole normale supérieure, 1995. http://www.theses.fr/1995DENS0001.
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