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39 results on '"DUGAT, Pascale"'

1. Improving thin structures in surface reconstruction from sparse point cloud

Author

Maxime Lhuillier, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
Surface (mathematics), 3D Delaunay triangulation, Computer science, Point cloud, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Initialization, Scale (descriptive set theory), 02 engineering and technology, [SPI.AUTO]Engineering Sciences [physics]/Automatic, 0202 electrical engineering, electronic engineering, information engineering, Computer vision, ComputingMilieux_MISCELLANEOUS, ComputingMethodologies_COMPUTERGRAPHICS, business.industry, [INFO.INFO-CV]Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV], 020207 software engineering, Thin structure, [SPI.AUTO] Engineering Sciences [physics]/Automatic, Polygon, Visibility, 020201 artificial intelligence & image processing, Sparse features, Artificial intelligence, business, Environment modeling, Surface reconstruction
Abstract

International audience; Methods were proposed to estimate a surface from a sparse cloud of points reconstructed from images.These methods are interesting in several contexts including large scale scenes, limited computational resources and initialization of dense stereo.However they are deficient in presence of thin structures such as posts, which are often present in both urban and natural scenes: these scene components can be partly or even completely removed.Here we reduce this problem by introducing a pre-processing, assuming that (1) some of the points form polygonal chains approximating curves and occluding contours of the scene and (2) the direction of the thin structures is roughly known (e.g. vertical).In the experiments, our pre-processing improves the results of two different surface reconstruction methods applied on videos taken by helmet-held 360 cameras.

Published
2019
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2. Map Matching and Lanes Number Estimation with Openstreetmap

Author

Abderrahim Kasmi, Roland Chapuis, Dieumet Denis, Romuald Aufrère, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), SherpaEngineering, R&DDepartment, Nanterre, DUGAT, Pascale, and SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)

Subjects
Estimation, Computer science, business.industry, Data models, 02 engineering and technology, Map matching, computer.software_genre, Receivers, Roads, [SPI.AUTO]Engineering Sciences [physics]/Automatic, Set (abstract data type), [SPI.AUTO] Engineering Sciences [physics]/Automatic, Global Positioning System, 11. Sustainability, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, Data mining, business, computer, ComputingMilieux_MISCELLANEOUS, Probabilistic logic, Probability
Abstract

International audience; Road information, like lanes number, play an important role for intelligent vehicles (IV). Traditionally such road information are obtained through a vision-based measurement or by using a digital detailed map. In this paper, we present a new method for estimating the number of lanes using a low precision GPS receiver and OpenSteetMap (OSM). The method includes the integration of the GPS traces and OSM for a map matching. To this end we developed a probabilistic multicriteria algorithm for map matching that takes into account the accuracy of the GPS data and the attribute information of the road from OSM. Afterward we estimate the number of lanes from OSM. We tested our algorithm on a set of GPS data collected in an urban area near Paris for a total distance of 50km and the overall estimation accuracy reached 83.64%

Published
2018
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3. Résolution par la méthode de Monte Carlo de modèles multi-échelles non linéaires pour les photo-procédés solaires

Author

Victor Gattepaille, Jérémi Dauchet, Jean-François Cornet, Fabrice Gros, Caroline Supplis, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

4. Safe and Online MPC for Managing Safety and Comfort of Autonomous Vehicles in Urban Environment

Author

Hyo-Sang Shin, Benoit Thuilot, Antonios Tsourdos, Lounis Adouane, Charles Philippe, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
050210 logistics & transportation, Computer science, media_common.quotation_subject, 05 social sciences, Control (management), 020206 networking & telecommunications, Control engineering, 02 engineering and technology, Tracking (particle physics), [SPI.AUTO]Engineering Sciences [physics]/Automatic, [SPI.AUTO] Engineering Sciences [physics]/Automatic, Control theory, 0502 economics and business, 11. Sustainability, 0202 electrical engineering, electronic engineering, information engineering, Trajectory, Function (engineering), Urban environment, ComputingMilieux_MISCELLANEOUS, media_common
Abstract

In this paper is presented a linear MPC controller design for autonomous cars navigation. It combines both the lateral and longitudinal control. The MPC cost function has been designed to account for human driving behaviours, i.e., it smoothes out coarse reference trajectories. Furthermore, a safety monitoring module has been implemented. It computes an estimated time before reaching an unacceptable situation (w.r.t. comfort constraints and tracking performance) under the current tracking conditions. The overall benefit of this controller is to guarantee trajectory smoothness while outputting information on its performance. This information will later be used to re-plan safe trajectories in dynamic environments. The proposed linear MPC controller has been tested in a typical urban scenario based on a realistic simulator.

Published
2018

5. Learning to touch objects through stage-wise deep reinforcement learning

Author

Francois de La Bourdonnaye, Jochen Triesch, Céline Teulière, Thierry Chateau, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Frankfurt Institute for Advanced Studies (FIAS ), DUGAT, Pascale, and de La Bourdonnaye, François

Subjects
0209 industrial biotechnology, Computer science, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, 02 engineering and technology, 010501 environmental sciences, 01 natural sciences, Task (project management), law.invention, [SPI.AUTO]Engineering Sciences [physics]/Automatic, 020901 industrial engineering & automation, [INFO.INFO-LG]Computer Science [cs]/Machine Learning [cs.LG], law, Human–computer interaction, Reinforcement learning, [INFO.INFO-RB]Computer Science [cs]/Robotics [cs.RO], 0105 earth and related environmental sciences, Robot kinematics, business.industry, [INFO.INFO-RB] Computer Science [cs]/Robotics [cs.RO], Robotics, [INFO.INFO-LG] Computer Science [cs]/Machine Learning [cs.LG], Object (computer science), Robot end effector, [SPI.AUTO] Engineering Sciences [physics]/Automatic, Task analysis, Robot, Artificial intelligence, business
Abstract

International audience; Learning complex behaviors through reinforcement learning is particularly challenging when reward is only available upon successful completion of the full behavior. In manipulation robotics, so-called shaping rewards are often used to overcome this problem. However, these usually require human engineering or (partial) world models describing, e.g., the kinematics of the robot or high-level modules for perception. Here we propose an alternative method to learn an object palm-touching task through a weakly-supervised and stage-wise learning of simpler tasks. First, the robot learns to fixate the object with its cameras. Second, the robot learns eye-hand coordination by learning to fixate its end effector. Third, using the previously acquired skills an informative shaping reward can be computed which facilitates efficient learning of the object palm-touching task. We demonstrate in simulation that learning the full task with this shaping reward is comparable to learning with an informative supervised reward.

Published
2018

6. Novel Analytical Formulation for Shielding Effectiveness Calculation of Lossy Enclosures Containing Elliptical Apertures

Author

Bonnet, Pierre, MI, Institut de Chimie de Clermont-Ferrand (ICCF), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-SIGMA Clermont (SIGMA Clermont)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-SIGMA Clermont (SIGMA Clermont)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

7. Novel Analytical Formulation for Shielding Effectiveness Calculation of Lossy Enclosures Containing Elliptical Apertures

Author

Amelie Rabat, Khalil Ei Khamlichi Drissi, Pierre Bonnet, Sébastien Girard, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
Physics, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, 020208 electrical & electronic engineering, Enclosure, Plane wave, 020206 networking & telecommunications, 02 engineering and technology, Lossy compression, Computational physics, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Polarizability, Transmission line, Electromagnetic shielding, 0202 electrical engineering, electronic engineering, information engineering, Wave impedance, Electrical impedance, ComputingMilieux_MISCELLANEOUS
Abstract

This paper presents a new analytical formula to evaluate the shielding effectiveness (SE) of a lossy rectangular enclosure with elliptical and/or circular apertures excited by an external plane wave. On the basis of circuit model theory and Bethe theory of small holes, we extended Yin's model to account for apertures of elliptical shapes. The hole is then treated as a transmission line with an intrinsic impedance depending on its polarizability. The model takes easily into account higher order resonant modes. For validation, a commercial software is employed and enclosures with different size and apertures are studied. The proposed model shows accurate results in good agreement with the full wave simulation ones.

Published
2018

8. Caracterisation du risque CEM de sous-evaluation des tests conduits sur satellites en configuration vol

Author

Lalléchère, Sébastien, Kerroum, Kamal, Girard, Sébastien, Bonnet, Pierre, Paladian, Françoise, Patier, Laurent, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Centre National d'Études Spatiales [Toulouse] (CNES), and DUGAT, Pascale

Subjects
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

9. Breakthroughs in Quantum Chemistry

Author

E Hoggan, P., Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
[CHIM.MATE] Chemical Sciences/Material chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

10. ANALYSE DE SENSIBILITE GLOBALE PAR UNE METHODE NON INTRUSIVE DE COLLOCATION STOCHASTIQUE

Author

Bonnet, Pierre, Chauvière, C., Lalléchère, Sébastien, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Mathématiques Blaise Pascal (LMBP), Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

11. Etudiants relais de santé et service sanitaire en santé. 'Éducation à la santé et citoyenneté : quelles préventions, quelles solidarités ?

Author

Gerbaud, Laurent, Laboratoire de Génie Electrique de Grenoble (G2ELab), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), and DUGAT, Pascale

Subjects
[SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, ComputingMilieux_MISCELLANEOUS, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract

International audience

Published
2018

12. Formulation intégrale de modèles multi-échelles pour l'optimisation de procédés photo-réactifs solaires

Author

GATTEPAILLE, Victor, Dauchet, Jérémi, Gros, Fabrice, Roudet, Matthieu, Supplis, Caroline, CORNET, Jean-François, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

13. Update on the 2D-DIC Challenge: Results and Conclusions

Author

P L., Reu, Evelyne, Toussaint, E., Jones, H., Bruck, M., Iadicola, R., Balcaen, D., Turner, T., Siebert, P., Lava, M., Simonsen, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph], [SPI.MECA] Engineering Sciences [physics]/Mechanics [physics.med-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

14. Comportement experimental global et local des couvre-joints avec trous oblongs

Author

Evelyne, Toussaint, Sébastien, Durif, Abdelhamid, Bouchair, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), DUGAT, Pascale, and SIGMA Clermont (SIGMA Clermont)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])

Subjects
[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph], [SPI.MECA] Engineering Sciences [physics]/Mechanics [physics.med-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

15. Identification expérimentale des paramètres géométriques et dynamiques d'un robot plan

Author

Farah, Jacques, Chanal, Hélène, Bouton, Nicolas, Gagnol, Vincent, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
[SPI.AUTO] Engineering Sciences [physics]/Automatic, ComputingMilieux_MISCELLANEOUS, [SPI.AUTO]Engineering Sciences [physics]/Automatic
Abstract

International audience

Published
2018

16. Advanced assessment of the risk of underestimating EMC conducted tests for satellites in-flight conditions

Author

Kamal Kerroum, Pierre Bonnet, Sebastien Lallechere, Françoise Paladian, Laurent Patier, Sébastien Girard, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Centre National d'Études Spatiales [Toulouse] (CNES), and DUGAT, Pascale

Subjects
Propagation of uncertainty, Computer science, Ground, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, Monte Carlo method, Electromagnetic compatibility, Context (language use), Collocation (remote sensing), 01 natural sciences, 010305 fluids & plasmas, Reliability engineering, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Transmission line, 0103 physical sciences, 010306 general physics, Focus (optics), ComputingMilieux_MISCELLANEOUS
Abstract

TPID5179165. In the following, the context of this study is briefly described. Then, the theoretical foundations are presented including: deterministic models for grounding and bonding networks, and the framework for uncertainty propagation. Indeed, noticeable differences exist between “test” and “in-flight” configurations that may lead to overestimating and/or underestimating EMC confidence margins. In this context, a particular focus is given for Monte Carlo (MC) and Stochastic Collocation (SC) methods: the use of the two techniques is illustrated through Multi-conductor Transmission Line (MTL) simulations. The MTL method allows taking into account “uncertain” grounding of an equivalent MTL system including screening and straps bonding. A final discussion is proposed with EMC recommendations.

Published
2018

17. Path Tracking of a Two-Wheel Steering Mobile Robot: An Accurate and Robust Multi-Model Off-Road Steering Strategy

Author

Mathieu Deremetz, Benoit Thuilot, Roland Lenain, Technologies et systèmes d'information pour les agrosystèmes (UR TSCF), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Institut Pascal - Clermont Auvergne (IP), Sigma CLERMONT (Sigma CLERMONT)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), DUGAT, Pascale, Institut Pascal (IP), and SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)

Subjects
0209 industrial biotechnology, Observer (quantum physics), Computer science, Mobile robot, 02 engineering and technology, Kinematics, [SPI.AUTO]Engineering Sciences [physics]/Automatic, Axle, [SPI.AUTO] Engineering Sciences [physics]/Automatic, 020901 industrial engineering & automation, Control theory, Backstepping, Path (graph theory), Trajectory, Point (geometry), ComputingMilieux_MISCELLANEOUS
Abstract

[ADD1_IRSTEA]Équiper l'agriculture; International audience; In this paper, the problem associated with accurate control of a two-wheel steering mobile robot following a path is addressed thanks to a backstepping control strategy. This approach involves an observer to estimate the grip conditions, based on previous work, and the proposed control algorithm for the front axle. Since the significant parameters of the grip conditions are available from the observer, namely the sideslip angles and the cornering stiffnesses, it is then suitable to include them into an algorithm to control mobile robots and obtain a more accurate path tracking. This is made possible by gathering into a single backstepping approach both kinematic and dynamic models. This new point of view permits to take account of both kinematic and dynamic behaviors and grip parameters in the control law. The proposed approach is experimentally evaluated at different speeds and compared with two other state-of-the-art path tracking algorithms and evaluated for several values of lateral deviations.

Published
2018
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18. Identification of temporal sources for transmission lines applications

Author

Sebastien Lallechere, A. Al Ibrahim, Cédric Chauvière, Françoise Paladian, Pierre Bonnet, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Mathématiques Blaise Pascal (LMBP), Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
Electromagnetic field, Computer science, business.industry, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, Electromagnetic compatibility, Electrical engineering, 010103 numerical & computational mathematics, 01 natural sciences, Domain (software engineering), Identification (information), [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Electric power transmission, Electric field, 0103 physical sciences, Point (geometry), 0101 mathematics, business, 010301 acoustics, ComputingMilieux_MISCELLANEOUS, Voltage
Abstract

The idea of identifying a source that produces a specified electromagnetic field at a given point in space has received considerable attention over the past twenty years or so. Many techniques allow in theory to generate arbitrary electromagnetic fields in any given environment. One of them, the time reversal (TR) method, first applied in acoustics, has been popularized by M. Fink and his team [1] and has since spread in various other domains, including electromagnetic compatibility applications [2]. The advantage of such method is its simplicity, however, its major weakness lies in focusing a quantity of interest (electric field, current …) at one physical point of the domain and one instant of time. If more complex conditions are needed (e.g. enforcing the duration or the form of the imposed current/voltage/electric field), alternative methods are required.

Published
2018

19. Virtual histology of animal and human brains with Alzheimer's disease

Author

Fabien Chauveau, Boutin, H., Meyronet, D., Hugo Rositi, Cécile Olivier, Elleaume, H., Emmanuel Brun, Françoise Peyrin, Marlène Wiart, Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS), Université Jean Monnet [Saint-Étienne] (UJM)-Hospices Civils de Lyon (HCL)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Wolfson Molecular Imaging Centre (WMIC), University of Manchester [Manchester], Centre Hospitalier Lyon Sud [CHU - HCL] (CHLS), Hospices Civils de Lyon (HCL), Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Imagerie Tomographique et Radiothérapie, Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Jean Monnet [Saint-Étienne] (UJM)-Hospices Civils de Lyon (HCL)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Rayonnement Synchrotron et Recherche Medicale (RSRM), Université Joseph Fourier - Grenoble 1 (UJF)-European Synchrotron Radiation Facility (ESRF)-Institut National de la Santé et de la Recherche Médicale (INSERM), European Synchrotron Radiation Facility (ESRF), Cardiovasculaire, métabolisme, diabétologie et nutrition (CarMeN), Hospices Civils de Lyon (HCL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National de la Recherche Agronomique (INRA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut Pascal - Clermont Auvergne (IP), Sigma CLERMONT (Sigma CLERMONT)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Hospices Civils de Lyon (HCL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), European Synchrotron Radiation Facility (ESRF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Institut National de la Santé et de la Recherche Médicale (INSERM), and DUGAT, Pascale

Subjects
[SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, [SDV.IB.IMA] Life Sciences [q-bio]/Bioengineering/Imaging, [SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract

International audience; IntroductionSynchrotron Radiation X-ray Phase Computed Tomography (SR-PCT) of brain tissue can reveal different image contrast depending on sample preparation. Indeed, we have shown that ethanol dehydration of brain samples reveals myelin as a hyper-intense signal while maintaining optimal detection of packed proteinaceous structures such as amyloid plaques [1]. The present work builds on this versatile “virtual histology” tool to characterize amyloid deposits in brain samples from Alzheimer’s disease (AD) animal models and patients.MethodsMono, bi-, and triple transgenic lines of mouse (PDAPP, APP-PS1, 3xTg [2]) were studied, along with one line of transgenic rats [3]. Human samples of frontal cortex were obtained from 6 sporadic AD cases and 1 familial AD case (Cardiobiotec, CRB-HCL, Lyon, France). All samples were scanned after dehydration in ethanol on beamlines ID19 and ID17 at ESRF. In line propagation imaging was performed at 26keV, voxel size of 6.5μm and 3m free space propagation on ID19 (34 keV, 6.5µm and 11m on ID17). Images were reconstructed using Paganin’s method [4].Results/DiscussionAll transgenic animal brains (Fig. 1) and human AD (Fig. 2) cases exhibited amyloid signals in the form of bright spots. Myelin-based hyper-intensities enabled a detailed visualisation of white-matter tracts and subsequent structural connectivity. Additionally, vessels appeared hypo-intense in perfused brains from animals (Fig.1) and hyper-intense in human autopsic brains (Fig. 2), probably because of the presence of blood-related iron in non-perfused tissue. Concurrent immunofluorescence analyses of these observations are in progress.ConclusionsWhole-brain mouse acquisitions were performed faster (3-10 min) than previously described phase contrast approaches [5]. Human amyloid plaques were evidenced for the first time by SR-PCT. Dehydration-added myelin contrast may be used to highlight unexplored associations between amyloid deposition and myelin alterations.References[1] Rositi et al. Abstract #233, presented in European Molecular Imaging Meeting, Mar 18-20, Tübingen, Germany; 2015.[2] Mucke et al. J Neurosci. 2000 ; Blanchard et al. Exp Neurol 2003 ; Oddo et al. Neuron. 2003.[3] Cohen RM, et al. J Neurosci. 2013.[4] Paganin et al. J Microsc. 2002.[5] Noda-Saita et al. Neuroscience 2006 ; Connor et al. NeuroImage 2009 ; Pinzer et al. NeuroImage 2012 ; Astolfo et al. J Synchrotron Radiat. 2016.AcknowledgementWe are grateful to our collaborators (Nicolas Rama, Corinne Perrin, Karen Silva) for their help in gathering animal and human brain samples.

Published
2018

20. Analyse par éléments finis stochastique du mécanisme de glissement des barrages en remblai

Author

Bressolette, Philippe, DUGAT, Pascale, Institut Pascal (IP), and SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph], [SPI.MECA] Engineering Sciences [physics]/Mechanics [physics.med-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

21. Analyse radiative spectrale de la production bio-inspirée d'hydrogène

Author

Supplis, Caroline, Gros, Fabrice, Dauchet, Jérémi, Roudet, Matthieu, Gloaguen, Frédéric, CORNET, Jean-François, DUGAT, Pascale, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces (LEPMI ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Chimie du CNRS (INC)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

22. Foisonnement du chitosane en régime permanent pour le développement de matériaux poreux pour la régénération osseuse et tissulaire

Author

Djelveh, Gholamreza, Furtuna, D., Requia, L., Ursu, Alina-Violeta, Larafa, S., Pierre, Guillaume, LECOCQ De BAYNAST, Hélène, Michaud, Philippe, Delattre, Cédric, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

23. Cooperative localization based on range-only measurements from robots and infrastructure

Author

Cyrille, Pierre, Roland, Chapuis, Aufrère, Romuald, Jean, Laneurit, Christophe, Debain, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
[SPI.AUTO] Engineering Sciences [physics]/Automatic, ComputingMilieux_MISCELLANEOUS, [SPI.AUTO]Engineering Sciences [physics]/Automatic
Abstract

International audience

Published
2018

24. Oxydation des polysaccharides médiée par le TEMPO : une histoire qui continue

Author

Pierre, Guillaume, Delattre, Cédric, Dubessay, Pascal, Michaud, Philippe, DUGAT, Pascale, Institut Pascal (IP), and SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

25. Modèles de connaissance d'un photoréacteur d'étude pour la production d'hydrogène solaire

Author

Supplis, Caroline, Dahi, Ghiles, Gros, Fabrice, Dauchet, Jérémi, Roudet, Matthieu, Cornet, Jean-François, DUGAT, Pascale, Institut Pascal (IP), and SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

26. Mesure par DIC de la déformation des pièces durant leur usinage

Author

Rebergue, Guillaume, Blaysat, Benoît, Chanal, Hélène, Duc, Emmanuel, DUGAT, Pascale, Institut Pascal (IP), and SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.AUTO] Engineering Sciences [physics]/Automatic, ComputingMilieux_MISCELLANEOUS, [SPI.AUTO]Engineering Sciences [physics]/Automatic
Abstract

International audience

Published
2018

27. Dedicated Global DIC to study the global behavior of a workpiece during its milling

Author

Chanal, Hélène, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
[SPI.AUTO] Engineering Sciences [physics]/Automatic, ComputingMilieux_MISCELLANEOUS, [SPI.AUTO]Engineering Sciences [physics]/Automatic
Abstract

International audience

Published
2018

28. A new approach for machine-tool architecture selection at preliminary design stage

Author

Emmanuel Duc, Hélène Chanal, B. Chedli Bouzgarrou, Mohamed Lajili, DUGAT, Pascale, Institut Pascal (IP), and SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)

Subjects
business.product_category, business.industry, Computer science, 05 social sciences, Constraint (computer-aided design), Stiffness, Control engineering, Kinematics, Workspace, 030204 cardiovascular system & hematology, Machine tool, [SPI.AUTO]Engineering Sciences [physics]/Automatic, Parametric design, 03 medical and health sciences, 0302 clinical medicine, [SPI.AUTO] Engineering Sciences [physics]/Automatic, Conceptual design, 0502 economics and business, medicine, 050211 marketing, medicine.symptom, business, Aerospace, ComputingMilieux_MISCELLANEOUS
Abstract

Productivity and quality requirements in the aerospace industry involve optimized machine-tools in terms of stiffness, precision, kinematics and dynamics. Many researches aiming at evaluating and optimizing machine-tool performances in the preliminary design stage have been carried-out. This paper presents a new approach for selecting the best appropriate machine-tool architecture, for a given application, based on optimizing conceptual design models. In fact, considered machine-tool structures are modeled with simplified shape parts. The dimensions of these parts are defined as design variables. Afterward, a parametric design optimization is performed for each considered architecture, in order to minimize its total mass under the constraint of a minimal attempted stiffness all over the workspace. After that, several architectures can be compared and classified according to performance indices computed from the mechanical behavior of their corresponding optimized structures. This approach allows restricting the total number of structural arrangements to be detailed further and analyzed more accurately. The paper includes an illustration of the proposed approach through a comparative study between an open-loop and a closed-loop machine-tool architectures.

Published
2018

29. Production, extraction and characterization of alginates from seaweeds

Author

Alina V. Ursu, Guillaume Pierre, Bogdan Trica, Slim Abdelkafi, Cédric Delattre, Faiez Hentati, Philippe Michaud, Gholamreza Djelveh, Tanase Dobre, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
Chromatography, 010405 organic chemistry, Chemistry, [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, Extraction (chemistry), [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, 02 engineering and technology, 021001 nanoscience & nanotechnology, 0210 nano-technology, 01 natural sciences, ComputingMilieux_MISCELLANEOUS, 0104 chemical sciences, Characterization (materials science)
Abstract

International audience

Published
2018

30. Oligosaccharides biologiquement actifs obtenus par dégradation enzymatique d’un arabinogalactane extrait de cladodes de Cereus triangularis

Author

Petera, Benjamin, Delattre, Cédric, Pierre, Guillaume, Gardarin, Christine, Fenoradosoa, Taratra-Andrée, Michaud, Philippe, DUGAT, Pascale, Institut Pascal (IP), and SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

31. Eco-Pavin Solaire : une plateforme d'expérimentation de démonstrateurs pour la production solaire de vecteurs énergétiques

Author

CORNET, Jean-François, DUGAT, Pascale, Institut Pascal (IP), and SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

32. Integral formulations of multi-scale models for the optimization of solar photo-catalytic processes

Author

Victor Gattepaille, Jérémi Dauchet, Fabrice Gros, Matthieu Roudet, Caroline Supplis, Jean-François Cornet, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

33. Stochastic sensitivity analysis for the risk of underestimating aerospace EMC conducted tests

Author

Maahsanak, Abdelaziz, Lalléchère, Sébastien, Kerroum, Kamal, Girard, Sébastien, Bonnet, Pierre, Paladian, Françoise, Patier, Laurent, DUGAT, Pascale, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and Centre National d'Études Spatiales [Toulouse] (CNES)

Subjects
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

34. Computational Methods in Electromagnetic Compatibility: Antenna Theory Approach versus Transmission line Models

Author

Poljak, Dragan, El Khamlichi Drissi, Khalil, DUGAT, Pascale, Institut Pascal (IP), and SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, Electromagnetic compatibility, Numerical methods, Thin wire antenna, Transmision lines, Grounding, Human exposure, ComputingMilieux_MISCELLANEOUS
Abstract

This text combines the fundamentals of electromagnetics with numerical modeling to tackle a broad range of current electromagnetic compatibility (EMC) problems. The book is divided in two parts. The first part deals with the electromagnetic field coupling to thin wire configurations of arbitrary shape including problems with lightning, transmission lines, and grounding systems. In the second part the advanced models in the area of bioelectromagnetics developed by the authors are presented.

Published
2018

35. Burrows H., Campos H., DELATTRE Cédric, Dupre C., Encarnacao T., Fauchon M., GAIGNARD Clément, Hellio C., Ito J., LAROCHE Céline, MICHAUD Philippe, Pais A., PIERRE Guillaume, Serive B., Watanabe M

Author

Burrows, H., Campos, H., Delattre, Cédric, Dupre, C., Encarnacao, T., Fauchon, M., Gaignard, Clément, Hellio, Claire, Ito, J., Laroche, Céline, Michaud, Philippe, Pais, A., Pierre, Guillaume, Serive, B., Watanabe, M., Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), Plateforme technologique BIODIMAR, Université de Brest (UBO), Department of Physics [Coimbra], University of Coimbra [Portugal] (UC), DUGAT, Pascale, and SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

36. Stimulus Artifact Removal using Matrix Pencil Method

Author

Zied Mizouri, Khalil El Khamlichi Drissi, Christophe PASQUIER, Monconduit, L., Sion And Francois Gabrielli, B., DUGAT, Pascale, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Neuro-Dol (Neuro-Dol), and Université d'Auvergne - Clermont-Ferrand I (UdA)-Institut National de la Santé et de la Recherche Médicale (INSERM)

Subjects
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

37. Modal analysis of stacked gratings using B-splines basis

Author

Gérard Granet, DUGAT, Pascale, Laboratoire des sciences et matériaux pour l'électronique et d'automatique (LASMEA), and Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Centre National de la Recherche Scientifique (CNRS)

Subjects
010302 applied physics, Basis (linear algebra), Modal analysis, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, Mathematical analysis, Structure (category theory), Non orthogonal, Grating, 01 natural sciences, Modal method, 010309 optics, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, 0103 physical sciences, Layer (object-oriented design), Galerkin method, ComputingMilieux_MISCELLANEOUS, Mathematics
Abstract

We analyse stacked rotated 1D gratings. Although the whole structure is bi-periodic, introducing non orthogonal coordinates allows to formulate the problem in each layer grating in terms of a sole 1D spectral problem. The numerical solution is then obtained by using the Galerkin method with B-splines basis.

Published
2018

38. Spectral radiative analysis of bio-inspired H2 production

Author

Caroline Supplis, Fabrice Gros, Jérémi Dauchet, Matthieu Roudet, Frederic Gloaguen, Jean-François Cornet, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), and DUGAT, Pascale

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

39. Efficiency of Matrix Pencil Method in Stimulus Artifact Removal

Author

Khalil El Khamlichi Drissi, Christophe Pasquier, Benoit Sion, Lénaïc Monconduit, Zied Mizouri, Francois Gabrielli, Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Neuro-Dol (Neuro-Dol), Université d'Auvergne - Clermont-Ferrand I (UdA)-Institut National de la Santé et de la Recherche Médicale (INSERM), and DUGAT, Pascale

Subjects
genetic structures, Computer science, Response distortion, business.industry, [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism, Response analysis, 020206 networking & telecommunications, 02 engineering and technology, Stimulus (physiology), equipment and supplies, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, 03 medical and health sciences, 0302 clinical medicine, 0202 electrical engineering, electronic engineering, information engineering, Matrix pencil, Signal processing algorithms, Computer vision, Artificial intelligence, business, ComputingMilieux_MISCELLANEOUS, 030217 neurology & neurosurgery
Abstract

Stimulus artifact affecting electrophysiological recordings makes neural response analysis quite difficult. To analyze response with a maximum of precision, one needs to remove firstly the stimulus artifact without causing a neural response distortion. This paper introduces a new method of stimulus artifact removal based on its reconstruction with Matrix Pencil method.

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