Literatura académica sobre el tema "Géométries synthétiques"
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Artículos de revistas sobre el tema "Géométries synthétiques"
Le Maire, Pauline y Marc Munschy. "L'effet de la géométrie sur la précision dans l'estimation de la profondeur d'un réseau de type pipeline avec la méthode magnétique". E3S Web of Conferences 342 (2022): 02006. http://dx.doi.org/10.1051/e3sconf/202234202006.
Texto completoMarie-Jeanne, Perrin-Glorian. "Enseigner la géométrie plane en cohérence de 6 à 15 ans". REMATEC 19, n.º 48 (9 de febrero de 2024): e2024001. http://dx.doi.org/10.37084/rematec.1980-3141.2024.n48.e2024001.id588.
Texto completoCampana, Frédéric. "Orbifoldes géométriques spéciales et classification biméromorphe des variétés kählériennes compactes". Journal of the Institute of Mathematics of Jussieu 10, n.º 4 (28 de mayo de 2010): 809–934. http://dx.doi.org/10.1017/s1474748010000101.
Texto completoTancredi, L. y M. Teillaud. "Application de la géométrie synthétique au problème de modélisation géométrique directe des robots parallèles". Mechanism and Machine Theory 34, n.º 2 (febrero de 1999): 255–69. http://dx.doi.org/10.1016/s0094-114x(97)00108-0.
Texto completoTesis sobre el tema "Géométries synthétiques"
Saccaro, Ludovica. "Vers l'évaluation du risque des anévrismes de l'aorte abdominale par modélisation géométrique et simulations hémodynamiques d'ordre réduit". Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0025.
Texto completoThis thesis focuses on a specific pathology affecting the abdominal section of the aorta, known as abdominal aortic aneurysm (AAA). An aneurysm involves a persistent and localized weakening of the vessel wall, leading to enlargements and bulges, causing recirculation and turbulence of blood flow.Our thesis outlines a methodology for geometric modeling of abdominal aneurysms. The process involves acquiring CT images, reconstructing the aorta 3D geometry, and isolating the aneurysm. The modeling phase begins by identifying and approximating the centerline of the aortic vessel using B-spline functions. The aortic wall is then partitioned and profiled using Fourier series.To evaluate its effectiveness, the developed technique is applied to a dataset of CT scans from patients. Reconstructions obtained from the scans are also presented as examples to detail each step of the procedure. In addition, a quantitative evaluation and rationale behind modeling parameters are explained. Then, as a first application, the modeling is integrated into a registration process for clinical diagnosis and follow-up.The geometrical modeling procedure developed is used in a pipeline for hemodynamic simulations and risk assessment, employing a reduced-order modeling approach to construct a reduced solution space. Simulations, utilizing parameterized geometries, are conducted under realistic conditions, and risk indicators are computed and linked to the geometrical representation using Radial Basis Functions interpolant. Finally, predictions on risk indicators are obtained for an unknown geometry. The results, despite being promising, can be further improved by appropriately augmenting the initial dataset.To address the aforementioned scarcity of clinical data, we devised an automated workflow for generating synthetic geometries. This approach allows for the identification of relevant geometry parameters and involves machine learning to generate a virtual patient population consistent with the original data. In addition to improving the predictive capability of reduced models, the method can also be applied prospectively for in-silico trials and studies involving virtual patient populations
Pons, Bernad Gemma. "Aide à l’interprétation d’images radar à ouverture synthétique : analyse conjointe des propriétés géométriques et radiométriques des images SAR". Aix-Marseille 3, 2008. http://www.theses.fr/2008AIX30013.
Texto completoThe work of this thesis is part of the research efforts that are currently being undertaken on segmentation and classification to ease radar images interpretation. Our thesis contributes to this research by proposing a semi-automatic scene analysis approach to assist the interpretation of images acquired by a synthetic aperture radar (SAR). Mainly, it is focused on the application of segmentation methods to classification and object recognition problems. Its aim is to propose fast and simple methods, easily comprehensible by non-expert users in image processing. The proposed approach is a two-stage algorithm. First, a SAR image partition is obtained in a non-supervised manner by using a statistical active grid based on the minimization of the stochastic complexity. Then, discriminative features (statistics, geometrics and texture parameters) are calculated for each extracted region in order to classify them in a semi-supervised manner. A hierarchical approach is adopted. In practice, the proposed algorithm provides an initial land use classification as well as confidence measures for each region. This initial classification can be used as an aid to the image interpretation or as a source of information for further processing
Formont, Pierre. "Outils statistiques et géométriques pour la classification des images SAR polarimétriques hautement texturées". Phd thesis, Université Rennes 1, 2013. http://tel.archives-ouvertes.fr/tel-00983304.
Texto completoNavratil, Oldrich. "Débit de pleins bords et géométrie hydraulique : une description synthétique de la morphologie des cours d'eau pour relier le bassin versant et les habitats aquatiques". Grenoble INPG, 2005. http://www.theses.fr/2005INPG0031.
Texto completoHydrological regime controls physical aquatic habitat conditions at two time scales : i) at short time scale, through variations of hydraulic conditions with discharge that directly affect biological processes; and ii) at large time scale, through adjustment and maintenance processes of the main-channel morphology and substrate, essentially generated by frequent floods. In order to link aquatic habitat to drainage basin characteristics through hydrological regime, this work focuses on a description of channel morphology and hydraulics as functions of discharge, relevant at river reach scale, especially at near bankfull flow. We selected two kinds of descriptors of the channel: bankfull discharge and reach hydraulic geometry. Bankfull discharge - considered here exclusively as an hydraulic variable - corresponds to the main channel capacity and is also assumed to represent the magnitude of the formative discharge in natural alluvial rivers. Reach hydraulic geometry provides an estimation of mean and variability of hydraulic conditions with varying discharge. These variables are more and more used as input data for biological models. We carried out topographical surveys and built a 1-d hydraulic model on 17 gauged river reaches mainly located in the loire river bassin, but also in the orgeval river basin and in the cévennes region (france). This model helped us to define a methodology to estimate bankfull discharge and reach hydraulic geometry. Finally we led a first comparison between these morphological variables and the river basin characteristics
Breuer, Axel. "Estimation de l'humidité des sols par des mesures SAR polarimétriques". Rennes 1, 2003. http://www.theses.fr/2003REN10115.
Texto completoLibros sobre el tema "Géométries synthétiques"
Lavendhomme, R. Leçons de géométrie différentielle synthétique naïve. Louvain-la-Neuve: CIACO, 1987.
Buscar texto completoCapítulos de libros sobre el tema "Géométries synthétiques"
STOLTZ, Guillaume. "Les géosynthétiques filtres : emploi, retours d’expérience et recherches actuelles". En Les géosynthétiques d’hier à aujourd’hui, 151–89. ISTE Group, 2024. http://dx.doi.org/10.51926/iste.8175.ch5.
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