Academic literature on the topic 'Crâne – Simulation par ordinateur'
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Journal articles on the topic "Crâne – Simulation par ordinateur":
Meadeb, Jean, Gerard Chales, Patrice Burgevin, Philippe Ingels, Rene Pedrono, Jean-Michel Roger, Catherine Frangeul, Marie-Jo Pedrono, and Pierre Lenoir. "Apprentissage du diagnostic médical par simulation sur ordinateur (AEDM)." Medical Informatics 11, no. 2 (January 1986): 167–75. http://dx.doi.org/10.3109/14639238609001369.
Serhir, N., and C. Marche. "La simulation assistée par ordinateur dans le contrôle et l'utilisation optimale des ressources hydriques." Canadian Journal of Civil Engineering 19, no. 3 (June 1, 1992): 432–40. http://dx.doi.org/10.1139/l92-052.
Charness, Neil. "Psychological Models of Aging: How, Who, and What? A Comment." Canadian Journal on Aging / La Revue canadienne du vieillissement 14, no. 1 (1995): 67–73. http://dx.doi.org/10.1017/s0714980800010503.
Camarero, R., L. Granger, C. Marche, M. Soulié, and R. Tinawi. "L'intégration en conception assistée par ordinateur pour les projets pluridisciplinaires de génie civil." Canadian Journal of Civil Engineering 15, no. 6 (December 1, 1988): 990–1005. http://dx.doi.org/10.1139/l88-131.
Riopel, Martin. "Riopel, M. (2005). Conception et mises à l’essai d’un environnement d’apprentissage intégrant l’expérimentation assistée par ordinateur et la simulation assistée par ordinateur. Thèse de doctorat, Université de Montréal, Montréal." Revue des sciences de l'éducation 33, no. 1 (2007): 253. http://dx.doi.org/10.7202/016197ar.
Perez, Fabienne, and Jonathan Peterson. "10 ans de la revue @grh : une cartographie des publications en ressources humaines." @GRH N° 47, no. 2 (July 24, 2023): 23–41. http://dx.doi.org/10.3917/grh.047.0023.
Toussaint, J., T. Habtemariam, D. Oryang, and S. Wilson. "Développement d’un modèle de simulation informatique pour l’anaplasmose, notamment dans les Antilles." Revue d’élevage et de médecine vétérinaire des pays tropicaux 46, no. 1-2 (January 1, 1993): 47–48. http://dx.doi.org/10.19182/remvt.9396.
Thrasher, Craig L. "Corporate Team Training : A More Rational Organizational Development Method." Relations industrielles 27, no. 4 (April 12, 2005): 655–62. http://dx.doi.org/10.7202/028331ar.
Hernández-Alfaro, Federico. "Syndrome d’hyperdivergence faciale." L'Orthodontie Française 87, no. 4 (December 2016): 479–89. http://dx.doi.org/10.1051/orthodfr/2016037.
Fortin, J. P., R. Moussa, C. Bocquillon, and J. P. Villeneuve. "Hydrotel, un modèle hydrologique distribué pouvant bénéficier des données fournies par la télédétection et les systèmes d'information géographique." Revue des sciences de l'eau 8, no. 1 (April 12, 2005): 97–124. http://dx.doi.org/10.7202/705215ar.
Dissertations / Theses on the topic "Crâne – Simulation par ordinateur":
Baumgartner, Daniel. "Mécanismes de lésion et limites de tolérance au choc de la tête humaine : Simulations numériques et expérimentales de traumatismes crâniens." Université Louis Pasteur (Strasbourg) (1971-2008), 2001. http://www.theses.fr/2001STR13229.
This study proposes new head tissues mechanical tolerance limits belonging to specific injury mechanisms consecutively to an impact. The employed methodology consists in both a finite element modelling (FEM) and a physical modelling of 66 real world accidents of helmeted motorcyclists and American footballers, pedestrians and ballistic projectiles impacts. Initially, an extension of the field of validity of the ULP FEM of the human head to strong dampened long duration impacts with high rotational component, as well as a parametric and a sensitivity analysis are proposed. Moreover, the ULP FEM of the human head is controlled with the real kinematics sustained by each accident victim. A correlation study between the calculated head mechanical field parameters on the one hand, and the observed injuries on the other hand, leads to the identification of injury mechanical criteria. A global strain energy of the subarachnoidal space of 5. 4 J leads to subdural or subarachnoidal haematoma. A brain Von Mises stress of 18 kPa generates moderate neurological lesions which can become severe from 38 kPa. A global strain energy of the skull of 2. 2 J leads to bone rupture. Two severity scale for global injury statement of a victim are equally developed. The experimental injury mechanical criteria are obtained thanks to the physical prototype Bimass 150 of the human head used in the framework of an experimental reconstruction of 13 helmeted motorcyclists accidents. A brain linear acceleration of 273 g causes subdural or subarachnoidal haematoma. A brain angular acceleration of 25970 rad/sø, as well as a relative acceleration between the brain and the skull of 78 g, generates neurological lesions
Munsch, Marie. "Élaboration d’une méthodologie de reconstruction numérique d’accidents réels piéton." Strasbourg, 2011. https://publication-theses.unistra.fr/public/theses_doctorat/2011/MUNSCH_Marie_2011.pdf.
Pedestrians are considered the most vulnerable road users and alone account for 13% of killed in road accidents in France. For several years, to improve pedestrian safety, the first step was to understand the relationship between vehicle design and mechanisms of pedestrian injuries. Mathematical multibody models of pedestrians and vehicles have been developed to simulate the kinematics of the victim during impact with the vehicle. These are the modeling efforts that should lead to the definition of the initial conditions of the head at impact for the simulation of head injury using a finite element modeling. In this context, the objective is to develop a methodology for the reconstruction of real pedestrian accident to determine its kinematics and to simulate the head injury. This last step will ultimately extract head injury criteria more accurate than the criteria currently used. It is thus necessary to define mathematical models of vehicle and pedestrian. An evaluation of different models of multibody neck models and head boundary conditions was performed using a multi-modal analysis. Then the thesis will be on developing an automated method of reconstruction of the pedestrian kinematics with multibody modeling. An application of the developed tool is performed on a database of 8 real accidents of pedestrian vs. Vehicle
Angla, Célestine. "Fast transcranial acoustic simulations for personalized dosimetry in ultrasound brain therapy." Electronic Thesis or Diss., université Paris-Saclay, 2023. http://www.theses.fr/2023UPAST207.
Ultrasound brain therapy is a promising method, as it is non-invasive when ultrasonic waves are sent through the skull. However, the skull bone complex structure strongly attenuates and aberrates the ultrasound beam, altering the dimensions, position and intensity of the focal spot. These focal parameters must be perfectly controlled to ensure both treatment efficacy and safety. Due to the high inter/intra-individual variability of skull geometry and acoustic properties, personalized simulations are required to predict focal characteristics depending on the patient skull and the ultrasonic probe position. Most simulation methods currently in use, such as k-Wave, are very time- and memory-intensive, limiting them to pre-intervention planning tools. The aim of this thesis was to develop a fast and realistic semi-analytical method for ultrasound field computation through the skull. As a first step, we developed a smooth and homogeneous model of the skull, realistic and suited to fast field computation algorithms. To this end, we modeled the skull inner and outer surfaces using a method called "Multi-level Bspline Approximation", and we developed a skull acoustic property homogenization method, which was numerically validated. This smooth and homogeneous skull model was then used as input to the field computation algorithm developed. This algorithm, named SplineBeam, is based on an ultrasonic path computation method that minimizes the time-of-flight function, which is fast and accurate, and which, combined with the pencil method, enables a regular sampling of the ultrasound probe. SplineBeam was validated numerically, by comparison with the pencil method, embedded in the CIVA HealthCare simulation platform, developed at the CEA, and with other numerical solvers (including k-Wave) on a series of configurations, and experimentally, by comparison with hydrophone measured pressure fields through an ex vivo skull sample. SplineBeam simulated fields were found to be closer to the experimentally measured ones than those simulated with k-Wave. This validates both the skull model and the field computation method. Furthermore, SplineBeam can restrict its computation to the focal spot, which allows it to drastically reduce the number of computation points, making it faster than k-Wave by two orders of magnitude, for a large probe
Djian, Francis. "Modélisation thermique des thermostats pour oscillateurs à quartz et applications." Besançon, 1991. http://www.theses.fr/1991BESA2021.
Béraud, Nicolas. "Fabrication assistée par ordinateur pour le procédé EBM." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAI052/document.
The Electron Beam Melting (EBM) process allows to build metallic parts from powder. Thanks to the geometric and mechanical quality of the parts produced, the EBM process can be used to manufacture functional parts and not only prototypes. This process, with other additive metallic processes, make it possible to consider a transition from 3D printing to metallic additive manufacturing.The use of additive manufacturing in an industrial environment requires compliance with quality, cost and time criteria for the parts produced. The production of manufactured parts involves a series of numerical stages which is called the numerical chain. The numerical chain has a significant impact on the three criteria mentioned above. Thus, this thesis provides an answer to the following question:How Computer Aided Manufacturing can improve the quality, cost and time of the EBM manufacturing process?This problem is addressed through the following underlying question:What are the required characteristics for a Computer Aided Manufacturing system adapted to the EBM process?In order to answer this question, the current numerical chain is analyzed. Three main limitations are found:- the use of STL files format- the process cannot be optimized at different scales- the process cannot be simulatedTo solve these issues, a CAM environment is proposed. It allows the centralization of all numerical operations in a single environment. All supported formats can be used within this environment, such as native CAD file formats or STEP format. Software developments are done to prove the feasibility of such an environment.The CAM environment implementation reveals the crucial role of simulation in this system. It is therefore necessary to answer this second question:How to obtain an EBM process simulation allowing the development of parameters, virtually?Although EBM simulation is a recurrent subject in scientific literature, existing studies are based on the finite elements method but the calculation time needed is too important to be used in an CAM environment. Thus, an alternative type of simulation is created in this thesis: a simulation based on abacus. It is composed of a finite elements model, that allows heat maps generation for standards cases of heating and cooling. These heat maps are then transformed in abacus. The simulation algorithm based on abacus search the nearest abacus from the simulated situation in order to estimate the temperatures at the next time step.This simulation method was used to reduce the calculation time while keeping a sufficient precision to optimize process parameters.With the simulation based on abacus, a tool for the optimization of melting strategies is developed. This tool allows quality improvement for the produced parts through the calculation of melting strategies according to thermic criteria.To summarize, the main contributions of this work are:- the definition of requirements specifications of a powerful numerical chain for the EBM process- the development of a CAM environment adapted to the EBM process- the proposal of a fast simulation for the EBM process, based on abacus- the development of a tool for the optimization of melting strategies
Louin, Jean-Charles. "Effets d'hétérogénéités de teneur en carbone sur les cinétiques de transformations de phase et sur la genèse des contraintes internes lors du refroidissement d'aciers." Vandoeuvre-les-Nancy, INPL, 2003. http://www.theses.fr/2003INPL077N.
Heat treatment is a process that needs the control of both final microstructures and residual stresses and deformations. Numerical simulation is a useful tool for a better optimization of this process. The aim of our work was to contribute to the development of a numerical tool for the prediction of microstructures, stresses and strains during cooling of pieces that may contain chemical heterogeneities, particularly carbon content heterogeneities. Firstly, an existing model for the prediction of transformation kinetics in steels has been further developped in order to take into account the effects of the carbon content enrichment of austenite due to a partial ferritic transformation on the subsequent transformations. Coupled thermal, metallurgical, mechanical calculations have then been performed to study the effects of carbon content gradients on the microstructural evolutions and on the residual stresses development during cooling. Particularly, the possible effects of solidification macro and mesosegregations have been quantified in massive cylinders with sizes close to the size of an ingot. Secondly, experimental validations have been performed for homogeneous cylindrical specimen (40CrMnMo8 steel) and for a chemically heterogeneous specimen specifically designed for our study. The complete set of input data necessary for the simulations has been established from experimental characterizations of the steel. The role of chemical heterogeneity has been analysed through the experimental and calculated results. Finally, a good correlation has been obtained between measurements and calculation of the deformation during cooling of a 3D "croissant" shaped specimen
Sech, Nicolas Le. "Photocathodes à base de nanotubes de carbone sur substrats semi-conducteurs de type III-V. Application aux amplificateurs hyperfréquence." Palaiseau, Ecole polytechnique, 2010. http://pastel.archives-ouvertes.fr/docs/00/50/14/43/PDF/These_N_Le_Sech.pdf.
Fauchet, Gauthier. "Modélisation en deux points de la turbulence isotrope compressible et validation à l'aide de simulations numériques." Lyon 1, 1998. http://www.theses.fr/1998LYO10027.
Menezla, Rabea. "Réalisation d'un logiciel de résolution de l'équation de poisson à trois dimensions : Simulation numérique tridimensionnelle du claquage des composants à jonctions P-N." Ecully, Ecole centrale de Lyon, 1990. http://www.theses.fr/1990ECDL0027.
Joly, Cécile. "Simulations numériques d'un jet rond turbulent et de son interaction avec un tourbillon de sillage." Université de Marne-la-Vallée, 2002. http://www.theses.fr/2002MARN0147.
The general context of this study concerns the impact of contrails, these famous white plumes frequently observed in the aircraft wake, on the atmosphere. From an aerodynamic point of view, the formation of the contrails is characterised by the interaction between a turbulent jet and a wing-tip vortex. The aim of this thesis is to contribute to a better understanding of the thermal and dynamic phenomena involved in this flow. This work is based on the numerical resolution of the three-dimensional, unsteady and compressible Navier-Stokes and energy conservation equations. Two approaches are considered: the direct numerical simulation and the large eddy simulation. A temporal simulation of the transition to turbulence of a non-isothermal jet is performed without accounting for the vortex flow field. A the end of this simulation, a vortex model is superimposed on the jet flow field. The first part of this thesis describes the two approaches, the different subgrid models chosen for the large eddy simulations, and the numerical techniques employed. The second part is devoted to the jet flow simulation, and here the objective is to determine the subgrid model appropriated to this flow configuration. The third part is dedicated to the simulation of interaction between the jet and the vortex. Results are compared to experimental data. The simulations have demonstrated the development of large scale structures all around the vortex core. The temperature field concentrates in the large scale structures
Books on the topic "Crâne – Simulation par ordinateur":
Trigeassou, J. Cl. Recherche de modèles expérimentaux assistée par ordinateur. Toulouse: Langage et informatique, 1988.
Riopel, Martin. Conception et mises à l'essai d'un environnement d'apprentissage intégrant l'expérimentation assistée par ordinateur et la simulation assistée par ordinateur. [Repentigny, QC]: Martin Riopel, 2005.
Chevrier, Jacques. L' ordinateur, outil d'apprentissage. Hull, Qué: Université du Québec à Hull, 1985.
Molloy, Michael K. Fundamentals of performance modeling. New York: Macmillan Pub. Co., 1989.
Neelamkavil, Francis. Computer simulation and modelling. Chichester [Sussex, England]: Wiley, 1987.
Treuil, Jean-Pierre. Modélisation et simulation à base d'agents: Exemples commentés, outils informatiques et questions théoriques. Paris: Dunod, 2008.
Willis, Jerry. Computer simulations: A source book to learning in an electronic environment. New York: Garland Pub., 1987.
Lapresté, Jean-Thieerry. Aide-mémoire MATLAB. Paris: Ellipses, 2002.
Chung, Christopher A. Simulation modeling handbook: A practical approach. Boca Raton: CRC Press, 2004.
Stabler, Timothy. PhysioEx 4.0 laboratory simulations in physiology. San Francisco: Benjamin/Cummings, 2003.
Conference papers on the topic "Crâne – Simulation par ordinateur":
Elmoutawakkil, N., S. Bouzoubaa, S. Bellemkhannate, and I. Benyahya. "Flux de travail du guidage tridimensionnel en chirurgie orale." In 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206602005.