Dissertations / Theses on the topic 'Design assisté par ordinateur'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Design assisté par ordinateur.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
Almeida, Bezerra Hedlena Maria de. "Le rendu expressif assisté par ordinateur." Grenoble, 2010. https://theses.hal.science/tel-00542521.
Full textDigital edition, creation, and design bring the computer's extraordinary flexibility to the act of creation. The near absence of penalty for experimentation can be, however, both a blessing and a curse. Although the unprecedent flexibility of the computer encourages exploration of artistic ideas, it also can be a factor of great distraction to the artist. A great challenge for the development of graphics softwares today is, thus, to take advantage of computer's unprecedented flexibility, while offering to the user the adapted level of control that she or he is looking for. The difficulty when designing such adapted system is highly influenced by the expectations users place on the job performed by computers. As the computer places itself in the role of an assistant in the creation process, we expect it to be 'smart enough' to deserve this place. Usually, we do not accept well when the result of such assistance is not satisfactory. Nevertheless, the level of expectation, and consequently, satisfaction, is not the same for all users. Novice users tend to be less exigent and are often happy when the computer help them to create interesting results without the need of a strong user intervention. Professional users, on the other hand, usually have different needs. They are looking forward to softwares that are good enough in automatizing tasks, but also that provide intuitive controls to manipulate their results. For these users, the bigger is the impact of the work generated by the computer in the final result, the more these tasks are subjected to have control parameters. In this thesis, we demonstrate that the computer can be placed as an incomparable assistant into the visual creation process once well-adapted interaction systems are provided. Adaptation is thus an important aspect because, in different levels, users want to be able to have the control over the result in order to give their touch and express their creativity. The thesis presents two different scenarios demonstrating that controllability plays a major role in expressiveness: a real-time technique to cluster a dynamic 3D scene in order to achieve an automatic, yet controllable output that can then be used as input to any rendering style; and a number of adaptations to a drawing vector graphics primitive called Diffusion Curves that constrain and control the creation of complex color gradients. The thesis proposes, on one hand, mathematical and computational well-adapted representations to provide the user with different levels of control over algorithms of expressive rendering in order to manipulate two- and tridimensional scenes; and, on the other hand, to reproject this technical support into user-friendly software solutions
Couvy, Franck. "Enseignement assisté par ordinateur sous hypercard : utilisation du dessin et des images." Bordeaux 2, 1996. http://www.theses.fr/1996BOR2M010.
Full textGroux-Leclet, Dominique. "Une approche par plans et par modélisation du domaine appliquée à l'enseignement de la rhumatologie : le système ARIADE : Apprentissage de la Rhumatologie Intelligemment Assistée par orDinatEur." Compiègne, 1993. http://www.theses.fr/1993COMP666S.
Full textMliki, Mohamed Naoui. "Contribution à l'étude et à la réalisation d'un système de cotation fonctionnelle assisté par ordinateur." Université Paul Cézanne (Aix-Marseille). Faculté des sciences et techniques de Saint-Jérôme, 1992. http://www.theses.fr/1992AIX30055.
Full textFarag, Marc. "Conception assistée par ordinateur d'inhibiteurs de XIAP." Electronic Thesis or Diss., Normandie, 2023. http://www.theses.fr/2023NORMC264.
Full textSince their discovery, protein-protein interactions (PPIs) have been at the heart of many biological processes. These PPIs can be drug targets, either by mimicking a defective interaction or by inhibiting an inadequate interaction. Among the most implicated PPIs in pathologies, we found the Inhibitor Apoptosis Proteins (AAPs). These members are considered as key regulators of programmed cell death and, within the cell signalling pathways, XIAP, a member of the IAP family, is one of the most targeted proteins actually. Its involvement in cancers and rare inflammatory diseases makes it a therapeutic target of choice. Recent data in the literature have highlighted the importance of designing selective disruptors for this protein in order to avoid serious adverse effects. For this reason, it is essential to know the essential structural elements associated with the different domains of this protein, which distinguish it from other similar members of the IAP family. It is also essential to know the interaction mechanisms in which XIAP is involved with its partners. CADD tools, in particular the Structure-based drug design approach, as well as experimental evaluation techniques using fluorescence anisotropy (FPA) or AlphaScreen® technology were used as part of this thesis work. The results of in silico and in vitro work led to rational design proposals of selective small molecules that could potentially disrupt XIAP-mediated PPIs
Llados, i. Canet Josep. "Analyse de documents graphiques réalisés à main levée par combinaison de techniques de correspondance de graphes et de transformée de Hough : application au domaine de l'architecture." Paris 8, 1997. http://www.theses.fr/1997PA081385.
Full textThis thesis deals with the high-level automatic interpretation of paper documents. We have studied two of the major problems of graphics recognition: hatched pattern discrimination and symbol recognition. An application illustrates the proposed methods: a system to understand hand drawn architectural floor plans as an alternative cad input technique. The documents have been represented in basis of an attributed graph structure. Hatched patterns are detected in terms of their defining attributes: orientation, length and frequency of the filling segments. A hough-based transform is defined to map the edges of a graph to a parameter space where clusters define the attribute values of the hatched areas. The main advantage of this method is its flexibility since the attribute values of hatched patterns are computed from the document itself and they are not previously set. A second stage is the development of a symbol recognition algorithm using graph match, ing techniques. Since symbols to be recognized and the input document are represented by attributed graphs, symbol recognition is performed by looking for a subgraph isomorphism be, tween model and input graphs. To increase the robustness of the method against distortions the graph matching is computed by an error-tolerant subgraph isomorphism between region adja, cency graphs instead of plain graphs. This involves the definition of a region similarity criterion in terms of the string edit distance between region boundary strings. Finally, a last contribution is the design of a simple and fast method to detect perfect and distorted rotational and reflectional symmetries of 2d objects. The boundary of a shape is polygonally approximated and represented as a string. The set of minimum cost edit sequences that transform the shape string to a cyclically shifted version of itself define the rotational symmetry and its order. A modification of the algorithm is proposed to detect reflectional symmetries
Darlet, Ludovic. "Système de visualisation scientifique assistée par ordinateur." Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10044.
Full textRatsimbazafy, Jean-Raymond. "Fabrication assistee par ordinateur de protheses de hanche." Paris, ENSAM, 1988. http://www.theses.fr/1988ENAM0013.
Full textLaporte, Pierre. "Conception assistée par ordinateur en automatique : un logiciel d'identification." Grenoble INPG, 1985. http://www.theses.fr/1985INPG0135.
Full textBHIRI, MED TAHAR. "Programmation par assemblage de composants logiciels : application a l'enseignement assiste par ordinateur." Nice, 1988. http://www.theses.fr/1988NICE4251.
Full textKuate, Gilbert. "Analyse d'activités de conception : contribution à la tracabilité des intentions de conception dans les modèles CAO." Besançon, 2006. http://www.theses.fr/2006BESA2032.
Full textThe design capitalization becomes a important element for collaborative work since this one comprises individual episodes. It passes by the conservation of the design reasoning and intentions traces. To this end, the individual designer needs to be assisted by a system which we called design intent system. The ideal of such a system was subdivided in modules and described. We were interested particularly to the CAD systems, which we want to compare with this ideal system. To arrive there, we undertook to analyze a design sequence using CAD tools. We adopted the protocol analysis method, where the designer verbalizes his thoughts in the course, or after his work (Concurrent Think Aloud or CTA, Retrospective Think Aloud or RTA). Four design experiments were thus carried out with the participation of four different designers. The CTA analysis enabled us to better understand the design using CAD tools and to propose a activities model. This model have six elements: observation, design intents formalization, design reasoning, representation intents formalization, reasoning for the representation and action. The links between the elements are represented in the model. A comparison between the CTA and the RTA was then carried out. This comparison allowed to detect some insufficiencies of CAD tool, used for the design intents representation. To contribute to mitigate these insufficiencies, we proposed a framework, which allowed to attach the design intents to the product CAD model
Muller, Thomas. "Synthèse d’image iso-photographique pour la conception de l’apparence assistée par ordinateur." Electronic Thesis or Diss., Paris, CNAM, 2021. http://www.theses.fr/2021CNAM1289.
Full textThe so-called “Computer Aided Appearance Design” (CA²D), which emerged in the late 1990s, is a branch of CAD dealing specifically with the appearance of materials.CA²D could be a key tool for decision-making in the design phases of manufactured products. However, while nowadays the digital model has almost completely superseded the physical model as far as the choice of shape is concerned, the determination of colours and materials still essentially requires the production of one or more real prototypes. This research workraises the issues of decision-making related to appearance on the basis of a computer-generated image simulation. This pragmatic approach allowing a link between real and virtual provides in this field a new concept that we shall call iso-photographic rendering
Orchampt, Patrick. "Apports des techniques d'intelligence artificielle en conception assistée par ordinateur : applications à la schématique." Lyon 1, 1987. http://www.theses.fr/1987LYO19017.
Full textBagy, Simon. "Design and optimization of aircraft engine nozzles in under-wing configuration." Thesis, Montpellier, 2020. http://www.theses.fr/2020MONTS022.
Full textWhen aircraft have under-wing propulsion systems, aerodynamic interactions appear between engines and wings. The trend of increasing turbofans by-pass ratio in order to improve their efficiency leads to greater engine diameters, and therefore strengthens these installation effects. In particular, the engine rear-body and the nozzles are located in the vicinity of the wing pressure side and are directly concerned by these interactions. In order to take these effects into account during early design phases of nozzles aerolines, the present thesis work aims at developing design approaches based on aerodynamic shape optimization methods, with industrial tools (such as CAD) and coupled aeropropulsive simulations. Industrial geometrical models are usually defined with commercial CAD software and comprise hundreds of design parameters. However, a literature review on optimization methods shows the difficulty of considering these software as well as a high number of design variables. Consequently, an original approach called convex combination is proposed. This method enables a dimensional reduction for the optimization problem, by using industrial know-how to define a subspace of the design space. Thus, it allows the use of most optimization methods for optimum research on the subspace. At first, this approach is tested and validated on a 2D single-flow nozzle case. On this case without CAD, exploring a subspace appears capable of outperforming full-space research. Then, a case of industrial complexity is defined, with a CAD geometry of turbofan nacelle and dual separate flow nozzles. Optimizations performed on this isolated nacelle (without aircraft) validate the use of the proposed approach with industrial design tools. Finally, some developments towards fully-coupled aeropropulsive simulations are made. In the end, these simulations coupling aerodynamics to a thermodynamic engine model are expected to be integrated in the optimization workflow. The thesis work consisted in developing optimization strategies and workflows adapted to the design of aeronautic turbofan nozzles, while considering industrial use cases and tools. Although the final application case on a complete aircraft with under-wing engines has not been covered in this work, the proposed convex combination approach and the associated workflow will allow to carry out this study in the near future
Enjalbert, Gérard. "Développement d'un outil de conception assistée par ordinateur : le logiciel circuit." Grenoble INPG, 1989. http://www.theses.fr/1989INPG0095.
Full textSimon, Sebastian. "Collaborative learning in mobile settings : conceptual framework and design of an innovative device to augment flat visual representations." Electronic Thesis or Diss., Le Mans, 2024. http://www.theses.fr/2024LEMA1019.
Full textThis PhD thesis focuses on the design and experimentation of a tool to support collaborative learning, in small autonomous groups, during field trips. To this end, we have developed SPART, a device for augmenting flat surfaces, such as maps or images, which can be used with standard smartphones or tablets. It provides a large workspace and intuitive interaction affordances similar to those offered by interactive tabletops. The device has been tested during a classroom activity, a field-trip and a science fair. This thesis also offers more theoretical contributions, such as a definition of a conceptual framework, to better understand the elements and mechanisms inherent to collaborative learning. The PAC conceptual framework was built with the aim of becoming a collaborative artifact for the CSCL (Computer Supported Collaborative Learning) community. We also propose a meta-analysis of existing collaborative functionalities and their impacts to facilitate the design of CSCL software
Delépine, Baudoin. "Computer-aided design (CAD) tools for bioproduction and biosensing pathway engineering." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLE032/document.
Full textAdvances in systems and synthetic biology are fueling our ability to develop successful metabolic engineering applications for the sustainable production of bio-based chemicals. We can envision a future in which designer cells could be engineered to transform any carbon source into any target compound. This daunting task will be achieved by leveraging methods that proved themselves in other engineering disciplines. Among those, the use of Computer Aided Design(CAD) softwares is expected to reduce the amount of time and expert knowledge needed to design de novo metabolic pathways. The first part of this thesis is dedicated to our pathway prediction algorithm and its CAD implementations. Most notably, we will present RetroPath2.0, a versatile reaction network prediction framework focused on retrosynthesis that is built to be easily extensible by the community. In the second part, we will highlight the interest of intracellular biosensors for metabolic engineering and introduce SensiPath, a web application that uses a reaction prediction engine to design biosensing circuits for compounds for which no direct biosensors are known. Altogether, this thesis proposes that bioCAD tools should focus on empowering users’ creativity and encourage them to explore original applications
Pattou, Denis. "Modelisation moleculaire assistee par ordinateur : etude et realisation du logiciel mol3d." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13020.
Full textBoukider, Akli. "Conception des pompes centrifuges assistee par ordinateur : dimensionnement et trace, optimisation du profil meridien." Paris, ENSAM, 1988. http://www.theses.fr/1988ENAM0001.
Full textMoura, Filho César Olavo de. "MDEduc : conceiving and implementing a language-oriented approach for the design of automated learning scenarios." Lille 1, 2007. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/2007/50377-2007-Namyouisse.pdf.
Full textLaisney, Patrice. "Intermédiaires graphiques et conception assistée par ordinateur : Étude des processus d’enseignement-apprentissage à l’oeuvre dans l’éducation technologique au collège." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM3049.
Full textAt the level of the middle school, the technology is a general discipline which addresses all the pupils. So, more than ever, in 21th century, the knowledge of the world of objects is a part of the culture of the citizen. Nevertheless, the technology in middle school is a discipline still under construction, the objects of knowledge are partially defined and the research in didactics of the technology still has numerous questions to investigate. This thesis discusses the design activity of students in middle school (pupils aged 11-15) in France and particularly to designing object. At first, our purpose is to answer, in an empirical way, the following question: what are the difficulties met by the pupils in situation of design? In the exploratory way, we analyze pupils' activity resolving collectively a problem of design. We intend secondly to analyze more particularly the difficulties bound to the production of representations of the possible solutions through the role which play the computing tools of computer-aided design. It is a way to think about the integration of these tools in the teaching of the technology in middle school. Would the use of graphic intermediaries modify and in which sense the performances of the pupils of 5th in the phase of research for solutions? The recourse to the theories of the action is relevant to observe the joint activity of the teacher and the pupil, especially in a domain or we expect from the research that she brings one so much one few answers. Through the results which she proposes, this thesis contributes to the community of the didacticiens of the sciences and the technology
Teodorov, Ciprian. "Model-driven physical design for future nanoscale architectures." Brest, 2011. http://www.theses.fr/2011BRES2050.
Full textIn the context where the traditional CMOS technology approaches its limits, some nanowire-based fabric proposals emerged, which all exhibit some common key characteristics. Among these, their bottom-up fabrication process leads to a regularity of assembly, which means the end of custom-made computational fabrics in favor of regular structures. Hence, research activities in this area, focus on structures conceptually similar to today’s reconfigurable PLA and/or FPGA architectures. A number of different fabrics and architectures are currently under investigation, e. G. CMOL , FPNI, NASIC. These proof-of-concept architectures take into account sortie fabrication constraints and support fault-tolerance techniques. What is still missing is the ability to capitalize on these experiments while offering a one-step shopping point for further research, especially at the physical-design level of the circuit design tool-flow. Sharing metrics, tools, and exploration capabilities is the next challenge to the nano-computing community. We address this problem by proposing a model-driven physical-design toolkit based on the factorization of common domain-specific concepts and the reification of the tool-flow. We used this tool-flow to drive the design-space exploration in the context of a novel nanoscale architecture, and we showed that such an approach assures design convergence based on frequent quantitative evaluations, moreover it enables incremental evolution of the architecture and the automation flow
Chaouachi, Amor. "Modelisation d'images coherentes, en objets, dans une base de connaissances : application a l'enseignement assiste par ordinateur." Toulouse 3, 1987. http://www.theses.fr/1987TOU30114.
Full textCailliau, Pierre-Edouard. "Modélisation et résolution de problèmes de synthèse dimensionnelle de mécanismes." Thesis, Châtenay-Malabry, Ecole centrale de Paris, 2010. http://www.theses.fr/2010ECAP0025.
Full textMechanism synthesis deals with design of mechanical devices capable of performing adesired task. Dimensional synthesis focuses on the determination of the parts’ dimensionsand locations in order to fulfill the requirements. Despite many works in this research field,current design techniques are lacking in generality and are only suitable for specific classesof mechanisms.This work proposes a generic approach to solve mechanism dimensional synthesis. Adeclarative specification based on constraints facilitates the design of almost any systemtopology such as planar and three-dimensional mechanisms with open and closed loop kinematicchains containing any number and type of joints. The modeling approach presentedallows automatic generation of systems of equations representing both the constraints tosatisfy and the target objectives to minimize, while enabling geometric construction of theobtained solutions.The resulting polynomial equations are nonlinear, highly coupled and do not necessarilyadmit an exact solution. Therefore, we propose to solve them by optimization methods. Thedeveloped strategy focuses on finding several local minima of synthesis problems instead offinding a global minimum. First, a particle swarm global optimization explores the searchdomain and provides points approximating these minima. Then, various Nelder-Mead basedlocal optimization processes handle these points concurrently. This strategy significantlyimproves the robustness of each optimization method taken independently. It also makes itpossible for the designer to choose the best solution among several configurations accordingto his criteria.A dimensional mechanism synthesis prototype, fully integrated with a commercial computeraided design software, has also been developed. It allows validating our design approachon a set of classical problems
Caracci, Georges. "Optimisation quadratique : applications a des problemes technologiques dans un contexte de conception assistee par ordinateur." Toulouse 3, 1988. http://www.theses.fr/1988TOU30125.
Full textDjafi, Faouzi. "L'apport du réalisme visuel à la représentation de l'image de synthèse dans un contexte de conception architecturale assistée par ordinateur (CAAO)." Thesis, Université Laval, 2005. http://www.theses.ulaval.ca/2005/22462/22462.pdf.
Full textThis research is concerned with synthesized images and visual realism as knowledge generation tools for CAAD (Computer Aided Architectural Design). The research goal is to document and validate contained visual realism in synthesized images to the architectural project elaboration process. The validated hypothesis is a « correlation » of irradiance and radiance values with the degree of visuel realism of synthesized images. As a practical outcome, this work proposes an evaluation methodology of visual realism based on irradiance and radiance values estimation with Radiance System. This protocol defines the programs and parameters to be used and their sequence to generate synthetic images. Furthermore, the protocol includes a files transfer procedure from formZ to Radiance System.
Tricaud, Martin. "Designing interactions, interacting with designs : Towards instruments and substrates in procedural computer graphics and beyond." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASG067.
Full textProcedural Computer Graphics (PCG) is an umbrella term for a variety of techniques that entail building and amending algorithmic procedures to generate graphical content. These procedural models reify the chain of operations leading to a design, turning the design process itself into an interactive object. Through manipulating such abstractions, artists and designers tap into the capacity of computers to produce outputs that require the repetitive and/or parallel application of rules to be obtained, or the storage of multiple objects in working memory. Yet, the expressiveness of PCG techniques remains constrained by how procedural models are represented and how users interact with these representations. A common frustration in PCG is the reliance on sliders to explore design spaces—what Alan Perlis would call a Turing tar-pit: everything is possible, but nothing is easy. This problem echoes a central question in Human-Computer Interaction: Which software artifacts are best suited to mediate our actions on information substrates? Direct manipulation interfaces—once considered more ergonomic from a cognitive standpoint—seem to be losing ground to conversational interactions: Generative AI models promise easy access to sophisticated results through verbal or textual commands. However, the metaphor of the interface as a "world" rather than as an interlocutor is not obsolete: Some things will always be more easily done than said. Recent research in cognitive science on tool-based action and technical reasoning has provided ample evidence that these faculties are distinct from symbolic reasoning and precede it in human evolution. Can this tacit technical reasoning, fundamental in artistic practices, extend to environments that aren't governed by rules analogous to those of the physical world? And if so, how? Answering these questions requires redefining materiality not as a quality of the environment but of an agent's relationship to it. Yet, the redefinitions proposed by design research often struggle to yield actionable principles for interface design. Three questions emerge from these observations:1. If materiality is a relationship between agent and environment, how does it develop between computational artists and software—if at all? 2. What obstacles hinder this process, and what specific software artifacts can support it?3. How can interactions and interfaces in general be architected to foster materiality with software environments? The first question is addressed through an ethnographic study of 12 artists and designers, proposing that materiality develops through epistemic processes. Artists build non-declarative knowledge through epistemic actions, externalizing this knowledge into artifacts that foster further exploration. I contextualize these findings with works that reflect similar intuitions. To tackle the second question, I develop a software prototype featuring novel interaction tools to facilitate navigation in large procedural model parameter spaces. Reflecting on the design process and participant feedback, I critique traditional usability and creativity evaluation methods, proposing alternative approaches inspired by instrumental interaction and information theory. In answering the third question, I argue that the difficulties HCI faces in bringing innovative interaction techniques and frameworks (particularly instrumental interaction) into the mainstream - stem not from the absence of adequate evaluation methods, but in the lack of adequate architecture. I speculate that if the building blocks of a software's interaction model have well-behaved mathematical semantics, we can extend the model-world metaphor beyond physicality and bring materiality to various information substrates
Sperandio, Olivier. "Applications et développements informatiques de protocoles de drug design et criblage virtuel." Paris 5, 2007. http://www.theses.fr/2007PA05P612.
Full textThis thesis in structural bioinformatics and chemoinformatics concentrates on the optimization of the therapeutics compounds identification process. It relies on the three main components of the chemical compounds virtual screening: preparation of a computational version of the chemical library to be screened; identification of novel active compounds using chemical similarity with respect to known active molecules (LBVS); and identification of novel active compounds using the 3D structure of the target binding site (SBVS). This work implied: to develop a computer program (MED-3DMC) that generates conformation ensembles of small molecules ; then to create a LBVS program (MED-SuMoLig) that can screen thousands of chemical compounds using their pharmaco-topological profile; and finally to use a hierarchical SBVS procedure to identify novel inhibitors for protein-membrane interaction using the coagulation factor Va as a proof of concept
Caradant, Dominique. "Application du concept d'objet a la representation et a l'utilisation de connaissances dans un systeme de conception assistee par ordinateur en architecture." Toulouse 3, 1987. http://www.theses.fr/1987TOU30082.
Full textOkuya, Yujiro. "CAD Modification Techniques for Design Reviews on Heterogeneous Interactive Systems." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS450.
Full textIndustrial design reviews benefit from emerging interactive technologies to become more Realistic, Immersive and Collaborative. However, the modification of design data is still managed in traditional workspace–Computer-Aided Design (CAD) systems on a workstation. As only engineers can apply modifications in such a workspace after the design review meeting, miscommunication between various experts could occur, resulting in unnecessary iterations. I argue that current processes of design reviews–design discussion and design adjustment– should merge. It could reduce the iterations, facilitate discussions and empower non-CAD experts to modify CAD data. In this dissertation, I started by interviewing engineers at an automotive industry and drew a new design review scenario in which project members can generate and compare several design alternatives in heterogeneous systems that can support needs from various experts. Based on the scenario, I firstly designed a VR-CAD system that can update the native format of CAD data in highly configurable interactive systems. I then explored interaction techniques for non-CAD experts to modify parametric CAD data with 3D and 2D interactive systems: a CAVE system and a wall-sized display. For the CAVE system, I created ShapeGuide, which allows users to generate and switch design alternatives of CAD data with a shape-based 3D interaction. I investigated how ShapeGuide affects a CAD data modification task compared to a standard one-dimensional scroll for parameter manipulation. Results showed that ShapeGuide was faster, more efficient and preferred by the users than the scroll technique. For the wall-sized display, I created ShapeCompare, which allows users to generate and distribute multiple design alternatives of CAD data using touch interaction. I investigated how ShapeCompare affects the collaboration among experts compared to a visualization technique suitable for standard screens. Results showed that pairs of participants performed a constraint solving task faster and used more deictic instructions with Shape- Compare. The presented findings for new design review practices using immersive systems and a wallsized display, allowing direct modification of the original CAD data by all project members regardless of their CAD expertise
Arrouk, Khaled. "Techniques de conception assistée par ordinateur (CAO) pour la caractérisation de l'espace de travail de robots manipulateurs parallèles." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2012. http://tel.archives-ouvertes.fr/tel-00766814.
Full textBakiri, Redouane. "Design des services : concepts, pratiques innovantes et maquettage numérique du service après-vente Renault." Paris, ENMP, 2007. http://www.theses.fr/2007ENMP1636.
Full textValue creation and quality strengthening in the automotive industry are no longer limited to supply marketable innovative cars with shortened lead-times but have to be extended gradually to efficient design of associated services such as extended warranties and after sale services. `This thesis defined Service Design as a Concept Service Design, Service Process Design and Production Service Design. It tackles more deeply with the Renault After Sale Service Process Design and proposes a new innovative aided design approach based on Business Process Modelling, flow simulation, CAD and 3D Visualisation in order to foster what-if scenarios and collaboration within all the professionals ( marketers, quality experts, logisticians CAD specialists, IT professionals and top managers). The aim of this « Service Digital Mock up » or « Computer Service Aided design » is to decrease design costs, leverage quality and help define objectives, quality norms ( service time, waiting time, resource workload, dedicated areas and layout) and select mutually the best compromises. Besides, this thesis show how Process Design can impact designing new Services Offers and how Service production with the clients can be described by behavorial simulation. Finally, it characterizes the after sale logistics and define some ways of improvement for the Information System Design
Fasse, Isabelle. "Simulation d'illumination d'édifices architecturaux en image de synthèse : expérimentations." Nancy 1, 1996. http://www.theses.fr/1996NAN10148.
Full textThe lighting design of interior or exterior architectural buildings or urban spaces in general, is a recent activity that nowadays undergoes profound changes from the conception to the realization. In this work, it is shown that computer aided simulations of the principals of light propagation as well as their visualization by image systhesis can provide precious support to lighting design. In particular, the novelty of this PhD work is two fold: - First, for an application point of view. The lighting design of the "Cour Carrée du Louvre" was the first project in its kind where a new lighting concept and a unique technology were invented and simulated before the in-situ realization. Through this application, it is shown how complex a lighting design can be, not only for a technical point of view by also for an architectural point of view. - Second, from an engineering point of view. Part of this work, contributed to the developpement of the first image systhesis software with which several lighting concepts were tested. The theorical background upon which this software is based as well as its functionalities are described
Doh, Prosper Kwaku. "Courbes paramétriques polynominales et formes matricielles du théorème binominal : Nouveaux outils fondamentaux pour la conception et fabrication assistée par ordinateur." Nancy 1, 1988. http://www.theses.fr/1988NAN10353.
Full textLemoine, Bérénice. "Generation of Adapted Training Game Activities : a Model-Driven Engineering Design and Implementation Framework." Electronic Thesis or Diss., Le Mans, 2024. https://cyberdoc-int.univ-lemans.fr/Theses/2024/2024LEMA1013.pdf.
Full textProcedural generation is a method widely used in video games to deliver varied content tailored to players. However, this method is rarely used in the field of Technology Enhanced Learning (TEL). In this PhD thesis, our focus is on the generation of game activities for declarative knowledge training (i.e., factual information such as laws and multiplication tables). In this context, it is necessary to provide learners with varied and adapted activities to avoid task drop-out caused by boredom. The scope of this thesis covers three angles of adaptation: the teacher's perspective on training, learner-players progression and players preferences.This PhD work falls within the field of engineering research of TEL systems. The aim is to characterise the generation of activities and to propose a “generic” approach, i.e., independent of any specific didactic domain. Thus, the aim is to be able to reuse generation elements for different domains. This thesis is based on the AdapTABLES research project, which provides an initial ground of study and experimentation. The aim of this project is to design and develop a multiplication table training game. The research contribution (i.e., study and design methods) was developed in this context, but was also generalised and evaluated in other contexts.First, we identified a game genre compatible with declarative knowledge training: the Roguelite. In this game genre, the activities or game levels are procedurally generated and incorporate a high degree of variability. Repetition is encouraged by a “permanent death” mechanism. Then, we: 1) characterised and specified the generation by analysing the different adaptation needs (i.e., teacher, learner-player) and 2) proposed a framework (i.e., conceptual framework and software infrastructure) based on the principles of Model-Driven Engineering to design and implement generators for declarative knowledge training in the context of Roguelite oriented games. The generators designed are independent software components producing levels (i.e., dungeons) in XML format that can be interpreted by an educational game.Three generators have been designed using the framework: one for multiplication training, a second for history and geography facts (i.e., required for the Diplôme National du Brevet des Collèges, a French exam taken in 9th grade) training, and a third for judo facts training. The multiplication tables generator is currently being used in an educational game designed as part of the AdapTABLES project. The framework and its components have been validated using system tests and model checking, as well as experimentation with an engineer to assess the usability of the framework. Moreover, the game developed for the AdapTABLES project and the associated generator were used several times in ecological conditions
Abtew, Mulat Alubel. "3D design process of clothing for women applied in corsetry and ballistic protection using 3D Warp Interlock fabrics." Thesis, Lille 1, 2020. http://www.theses.fr/2020LIL1I009.
Full textThe number of women participation in different perilous tasks including law enforcement and related fields shows an increment. However, they are still forced to wear either small-sized man’s body armour or traditionally designed women-based armour system during fieldwork. This ultimately puts them in danger by bringing poor ballistic impact protection, bad fitness as well as less comfort. This thesis proposed a novel 3D designing (CAD) technique for generating patterns for seamless women body armour. Besides, an appropriate textile (3D woven) fabric structures were engineered and optimised to accommodate the design for better performances. In the design process, various approaches have been utilised to develop the required pattern systems for women's seamless frontal soft body armour. The first steps devised new techniques to model the adaptive bust on a 3D virtual mannequin (having 90B cup size) using the 3D design process. Later, an adaptive bust cup was associated with other frontal parts of 3D women virtual mannequin to develop a 2D block pattern for first layers of women seamless soft body armour panel using reverse engineering approach. Even though such approach supports to attain the required bust volume through dart eliminations, however, precise generations of pattern for each successive panel layer were very important. Thus, a systematic 3D design approach through parametrisation process based on each layer's thickness was applied to generate block patterns for each successive armour panel’s layer. Experimental work revealed that such a 3D design approach and its manufacturing system were found precise to generate the different multi-layer panel’s pattern for developing seamless women's soft body armour. Besides, due to its excellent moulding ability, 3D warp interlock p-aramid fabrics based on various parameters including warp yarn interchange ratios were designed and manufactured to accommodate the proposed design through a dome-formation (moulding) process. The developed 3D warp interlock and its corresponding traditional 2D plain weave p-aramid fabric were characterised against mechanical behaviour and ballistic impact performance (NIJ-standard Level IIIA).The result shows that Based on the result, 3D warp interlock fabrics made with equal or a higher interchange ratio of binding: stuffer warp yarn inside the 3D fabric, i.e. 66.7% binding and 33.3% stuffer warp yarns revealed much lower back face signature values and higher energy absorbing capability with minimum number panels layer penetrations compared with its corresponding 2D plain weave and other 3D warp interlock fabric variants. The moulding behaviour and its recovery values of the 3D warp interlock fabrics toward hemispherical punching were also greatly affected by the binding-stuffer warp yarns interchange ratio inside the 3D warp interlock fabric variants. A perform with an optimised proportions of stuffer and binding warp yarns ratio revealed better drawing-in and in-plane shear values than other preforms. In conclusion, it was also possible to achieve the 3D warp interlock structure which could both accommodate the women's body contour with better ballistic impact performances compare to the conventional 2D plain woven fabrics
Dai, Lei. "An Open Platform of Parameterized Shape Optimization based-on CAD/CAE Integration Technique." Reims, 2006. http://theses.univ-reims.fr/exl-doc/GED00000752.pdf.
Full textSautot, Pascal Philippe. "Vissage pédiculaire assisté par ordinateur." Université Joseph Fourier (Grenoble), 1994. http://www.theses.fr/1994GRE19009.
Full textHoffer, Laurent. "Développement et validation du logiciel S4MPLE : application au docking moléculaire et à l'optimisation de fragments assistée par ordinateur dans le cadre du fragment-based drug design." Phd thesis, Université de Strasbourg, 2013. http://tel.archives-ouvertes.fr/tel-00874644.
Full textMeyrueis, Vincent. "Modification interactive de formes en réalité virtuelle : application à la conception d'un produit." Phd thesis, Paris, ENMP, 2011. https://pastel.hal.science/pastel-00609563.
Full textThe context of this research is the use of virtual reality for product design and development. At the industrial level, the virtual integration reviews are currently limited to static project review, with no possibility of changing the original design. In this work, we present a new method for virtual design review, which aims to enable the user to modify, as naturally as possible, the digital model inside the virtual environment. This method, called D3, is based on three steps: a selection step by drawing, a deformation step by manipulating the selected area and a final refining step that allows engineers to adjust the modifications. For the method to be a means of communication, it has to be simple, intuitive and usable by all project actors. An experiment was performed to evaluate the method in terms of learning curve and errors performed by subjects in a modification task. Finally, in order to facilitate the refining step, this method offers several ways for engineers to reflect the modifications on the CAD model
Mahdjoub, Morad. "La réalité virtuelle pour une conception de systèmes mécaniques centrée sur l'utilisateur." Besançon, 2007. http://www.theses.fr/2007BESA2039.
Full textOur thesis work carried out in the Systems and Transport laboratory (ERCOS team), deals with user-centred mechanical systems design. Our research is more specifically directed towards studying the mechanical systems which concern workstations. Indeed, one of the current problems for the industrialists is to be able to design workstations which are suitable for human (users/operators). The aim is to avoid the kind of serious health problems which are becoming apparent today, such as “repetitive strain injuries” (1st occupational disease declared in France and Europe). With this objective, we propose to study the “use” (or usability) of industrial equipment, by integrating “ergonomics” into the design process. Although our work was carried out in the field of Engineering Science (Mechanical engineering), we tried to take the ergonomics aspect into account through a multi-disciplinary approach. Consequently, our research is centred within the Design For Ergonomics (DFE) and design For Usability (DFU) disciplines which comes under the discipline of Design For X (DFX). Thus, our objective is to define a methodology, and associated tools, to be integrated into the ergonomic design process of both product and use. Thus, we successively studied two research hypotheses, by means of a first set of experiments carried out in the field of fine leather luxury goods. Our first research hypothesis is to study the use of a numerical mechanical system via the design of an interaction between the real user and this system. The second research hypothesis is to study the usefulness of virtual reality (VR), as a real-time virtual prototyping tool, to design the “use function” of the product and so the “human/numerical product” interaction. Within the context of a second set of experiments, carried out in the automobile industry and agro-alimentary fields, we studied a third research hypothesis. This third assumption is that VR can be used to design, in an interactive way, both the product and the product use earlier in the design process and in particular during the phases of preliminary studies and detailed studies. In order to generalise our experimental results, we identified various limitations of our results. It led us to consider integrating virtual reality into the design process through the definition of “design activities”. We thus propose a fourth research hypothesis: “virtual reality can be integrated, in a structured way, into a human-centred product design and development process”. Thus, our final contribution, based on all feedback from these experiments, introduces an original design methodology called Virtual Reality Aided Design for Use (VRADU). The first originality of our work is to propose using the application of VRADU methodology in all design stages implying a digital mock-Up (DMU) or a virtual prototype. For this reason, we introduced the concept of “virtual reality meeting point” which makes it possible to support the teamworking and the integration of the various disciplines within the design process. VRADU methodology defines, in a structured way, the impact of VR tools during the design of the product and its associated use. Thus, we defined the design actors concerned by the “virtual prototype and associated use” simulations in VR. We also defined their actions through role definition which can be assigned to them during simulations in VR. We proposed three “design activities” which use VR tools, within the VRADU methodology framework. These are: the qualitative ergonomic analysis of both product and associated use in VR, the quantitative ergonomic evaluation of both the product and associated use in VR and the design of the virtual prototype and its associated use in VR. The first “design activity” in VR proposes to evaluate, in an immersive and interactive way, product and product-use on the basis of subjective comments (qualitative aspects of use). The second originality of our work is to propose a second “design activity”, carried out using VR, which integrates tools for quantitative ergonomic analysis of the use, in order to supplement the qualitative recommendations already obtained. The third originality of our work lies in the third “design activity” in VR which is to modify the virtual prototype , in an interactive way and in real-time, during simulations in VR according to the previous ergonomic evaluations (objective and subjective) already made. For that, we developed a CAD type VR assembly module which makes it possible for the mechanical engineer to modify the virtual workstation structure within certain limits. A direct update of these modifications is possible on the native CAD model level due to the connection between the VR tools and the parametric CAD tools. This partially decreases the interworking problems between the various simulation tools. Finally, we ensured continuity in the virtual prototype development during its design. Indeed, the parameters modified on the virtual prototype are stored in a collaborative design tool of PLM type. These parameters can be re-used, thereafter, by other designers, thus ensuring permanent updating of the product data
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.
Full textThe 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
Meyrueis, Vincent. "Modification interactive de formes en réalité virtuelle : application à la conception d'un produit." Phd thesis, École Nationale Supérieure des Mines de Paris, 2011. http://pastel.archives-ouvertes.fr/pastel-00609563.
Full textChen, Xiao. "Contrôle et optimisation de la perception humaine sur les vêtements virtuels par évaluation sensorielle et apprentissage de données expérimentales." Thesis, Lille 1, 2015. http://www.theses.fr/2015LIL10019/document.
Full textUnder the exacerbated worldwide competition, the mass customization or personalization of products is now becoming an important strategy for companies to enhance the perceived value of their products. However, the current online customization experiences are not fully satisfying for consumers because the choices are mostly limited to colors and motifs. The sensory fields of products, particularly the material’s appearance and hand as well as the garment fit are barely concerned.In my PhD research project, we have proposed a new collaborative design platform. It permits merchants, designers and consumers to have a new experience during the development of highly valued personalized garments without extra industrial costs. The construction of this platform consists of several parts. At first, we have selected, through a sensory experiment, an appropriate 3D garment CAD software in terms of rending quality. Then we have proposed an active leaning-based experimental design in order to find the most appropriate values of the fabric technical parameters permitting to minimize the overall perceptual difference between real and virtual fabrics in static and dynamic scenarios. Afterwards, we have quantitatively characterized the human perception on virtual garment by using a number of normalized sensory descriptors. These descriptors involve not only the appearance and the hand of the fabric but also the garment fit. The corresponding sensory data have been collected through two sensory experiments respectively. By learning from the experimental data, two models have been established. The first model permits to characterize the relationship between the appearance and hand perception of virtual fabrics and corresponding technical parameters that constitute the inputs of the 3D garment CAD software. The second model concerns the relationship between virtual garment fit perception and the pattern design parameters. These two models constitute the main components of the collaborative design platform. Using this platform, we have realized a number of garments meeting consumer’s personalized perceptual requirements
Grezoux, Jean-Jacques. "Réalisation d'un logiciel d'enseignement assisté par ordinateur." Paris 9, 1985. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=1985PA090033.
Full textGuendouz, Hassina. "Implémentation d'un modèle timing dans un simulateur logique junior "VLSI" et restructuration de la chaine "CAO" correspondante." Paris 11, 1988. http://www.theses.fr/1988PA112115.
Full textDeng, Xiaoguang. "Développement d'un outil d'aide à la conception des matériaux fibreux multifonctionnels par les techniques de calcul avancé." Thesis, Lille 1, 2008. http://www.theses.fr/2008LIL10111/document.
Full textFace to the more and more intensive international concurrence, how to develop the new products with a minimum life cycle design is an interesting topic for many industries. A quick product development meeting the vary consumer's requirements is a critical key for the success of the company. ln this context, the tools of « rapid prototyping» have been developed and used for forecasting the performance of product and process. Using the computer modelling techniques, these tools permit to realise the representative prototypes close to the quality features predefined in the functional specifications with a limited trails and measures. This PHD thesis presents the research works in the filed of developing a design support tool for multifunctional materials. It permits to realise the prototypes adapted to the client's need with a limited time. This tool aims at measuring the relevance of design factors (raw material, process parameters and structural parameters), determining the relevant operation settings (acceptable range of design factors) related to the manufacturing process, and evaluating the global quality of prototypes using the multicriteria decision support methods
Heintz, Juliette. "Systemic approach and decision process for sustainability in chemical engineering : Application to computer aided product design." Thesis, Toulouse, INPT, 2012. http://www.theses.fr/2012INPT0087/document.
Full textIn a context where environmental issues are increasingly taken into account, the chemical related industry faces situations imposing a chemical product substitution. Computer aided molecular design methods, which consist in finding molecules satisfying a set of constraints, are well adapted to these situations. Using a systemic analysis of the needs and uses linked to this context, we develop a computer aided product design tool implementing a genetic algorithm. It is able to explore a wider solution space thanks to a flexible molecular framework. Besides, by allowing a very flexible setting of the problem to be solved, it enables the search of molecules sourced from renewable resources. Based on concepts from system and enterprise engineering, we formalize a decision making process dedicated to the product substitution in an industrial context. This multi-criteria decision process includes the phases of the requirements definition, of the generation of alternative solutions, of the selection of the best alternative and of the product application. It uses a model driven approach and decision making techniques that guaranty an operational alignment in addition to the strategic alignment across the chemical enterprise. Through a case study, we expose how the combination of our computer aided product design tool and our decision making process enables an environmentally compliant approach of product substitution which is both efficient and in adequacy with enterprise context
Cormier, Jérémy. "Mobiliser une analyse de l'activité comme aide à la conception et à l'évaluation d'un Environnement Virtuel pour l'Apprentissage Humain : un exemple en implantologie dentaire." Phd thesis, Université de Bretagne occidentale - Brest, 2012. http://tel.archives-ouvertes.fr/tel-00844758.
Full textDrapier, Pascal. "Le système de régression assisté par ordinateur Rao." Paris 9, 1987. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=1987PA090064.
Full textWe want to show the necessity of using expert system in building the new programs of statistical consulting system. We outline a statistical strategy for multiple regression analysis, and have developped our system RAO and an original interactive graphical module, gex, based on icons