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Search Results: 1 - 10 of 12313 matches for " Thibault Garcia "
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A Concept of Dynamically Reconfigurable Real-time Vision System for Autonomous Mobile Robotics
Aymeric De Cabrol,Thibault Garcia,Patrick Bonnin,Maryline Chetto,

国际自动化与计算杂志 , 2008,
Abstract: This paper describes specific constraints of vision systems that are dedicated to be embedded in mobile robots. If PC-based hardware architecture is convenient in this field because of its versatility, flexibility, performance, and cost, current real-time operating systems are not completely adapted to long processing with varying duration, and it is often necessary to oversize the system to guarantee fail-safe functioning. Also, interactions with other robotic tasks having more priority are difficult to handle. To answer this problem, we have developed a dynamically reconfigurable vision processing system, based on the innovative features of Cleopatre real-time applicative layer concerning scheduling and fault tolerance. This framework allows to define emergency and optional tasks to ensure a minimal quality of service for the other subsystems of the robot, while allowing to adapt dynamically vision processing chain to an exceptional everlasting vision process or processor overload. Thus, it allows a better cohabitation of several subsystems in a single hardware, and to develop less expensive but safe systems, as they will be designed for the regular case and not rare exceptional ones. Finally, it brings a new way to think and develop vision systems, with pairs of complementary operators.
Zbigniew Herbert, Znaki na papierze
Thibault Deleixhe
Slavica Bruxellensia : Revue Polyphonique de Littérature, Culture et Histoire Slaves , 2008,
Abstract: Dans une interview, Zbigniew Herbert confiait : Mon travail préparatoire à un livre, ce sont avant tout des dessins. Je ne fais pas de photos, cela simplifierait mon contact avec l’objet. Il n’en fallait pas moins pour donner aux éditions Bosz l’envie d’un projet : réunir ces précieuses esquisses de travail et les confronter aux textes qui en sont nés. Le résultat s’intitule Znaki na papierze (Signes sur papier) et appartient aux objets que l’on est fier de posséder dans sa bibliothèque. ...
Eugeniusz Tkaczyszyn-Dycki, Piosenka o zale no ciach i uzale nieniach
Thibault Deleixhe
Slavica Bruxellensia : Revue Polyphonique de Littérature, Culture et Histoire Slaves , 2009,
Abstract: Le jury du prix Nike adore surprendre ! Et cette année encore, il n’échappe pas à la règle. La victoire d’Eugeniusz Tkaczyszyn-Dycki, avec son recueil poétique Piosenka o zale no ciach i uzale nieniach (Chant de la servitude et de la dépendance), était pour le moins inattendue. Le personnage est loin d’être un inconnu du monde de la poésie polonaise contemporaine, c’est plut t cette dernière qui, depuis quelques années, peine à se frayer un chemin jusqu’à ses lecteurs. D’où la surprise du gra...
Une révolution au pays. Intercommunalité et luttes de pouvoir en milieu rural
Thibault Marmont
études Caribeénnes , 2009, DOI: 10.4000/etudescaribeennes.3495
Abstract: IntroductionSi l’autonomie municipale appara t comme un principe acquis des démocraties européennes (Marcou, 2000), la spécificité fran aise de l’émiettement communal fait que l’intercommunalité est presque consubstantielle à l’existence des communes en tant que collectivités territoriales (Novarina, Martin, 1988, p. 40). La loi du 5 avril 1884, qui les consacre comme telles, est en effet complétée six ans plus tard par un titre autorisant les syndicats de communes. Cette tradition de la coop...
New frontiers in the neuropsychopharmacology of mental illness
Thibault Renoir
Frontiers in Pharmacology , 2014, DOI: 10.3389/fphar.2014.00212
Abstract: This Research Topic aims to cover recent progress in research studying how genetic make-up and environmental factors can contribute to the development of mental disorders such as anxiety, depression, schizophrenia and psychoactive substances abuse. It has brought together leading experts in the field to address these questions from different angles in ten reviews, seven original research articles and two theoretic/opinion papers. The first three articles describe several techniques which are valuable tools to study the role of neurotransmitters such as serotonin (5-HT) in the pathophysiology and the treatment of psychiatric disorders. First, Prof Gardier nicely summarizes the main advantages as well as some limitations of using microdialysis in wildtype (WT) and knockout (KO) mice. His team showed that paroxetine-induced increased in cortical 5-HT extracellular level was enhanced in 5-HT1A receptor KO mice compared to WT animals. Then, by performing loose-seal cell-attached electrophysiological recordings in 5-HT transporter knockout (Sert-/-) and tryptophan hydroxylase-2 knockout (Tph2-/-) mice, Araragi et al demonstrate that the sensitivity of somatodendritic 5-HT1A receptors does not predict the magnitude of 5-HT neuron auto-inhibition. Finally, Mendez-David et al’s results suggest that isolation of peripheral blood mononuclear cells (PBMCs) from mice by submandibular bleeding is a useful technique to screen putative biomarkers relevant to the pathophysiology of mood disorders such as β-arrestin 1. They found that the reduced β-arrestin 1 levels found in PBMCs from anxious/depressed mice was restored to normal levels following chronic treatment with ?uoxetine. The following eleven articles provide excellent insights into the interaction between gene and environment in mental disorders as well as the role of several transmitters/neuropeptides and the different therapeutic strategies. El-Hage et al. elegantly expose the potential predictors of response/non response to antidepressants and discuss their clinical and practical implications. Alongside with reviewing several markers that can be used to predict response to pharmacotherapy, they also describe factors that might affect the expression of these markers, including environmental or genetic factors and comorbidities. Then, focusing mainly on the impact of polymorphisms on anxiety-like and depression-like behavior in rodents, Armario and Nadal discuss how individual differences can contribute to explain differential susceptibility to develop behavioral alterations. They also emphasize methodological
Testing the equivalence principle: why and how?
Thibault Damour
Physics , 1996, DOI: 10.1088/0264-9381/13/11A/005
Abstract: Part of the theoretical motivation for improving the present level of testing of the equivalence principle is reviewed. The general rationale for optimizing the choice of pairs of materials to be tested is presented. One introduces a simplified rationale based on a trichotomy of competing classes of theoretical models.
Theoretical aspects of gravitational radiation
Thibault Damour
Physics , 1996,
Abstract: A central problem in gravitational wave research is the {\it generation problem}, i.e., the problem of relating the outgoing gravitational wave field to the structure and motion of the material source. This problem has become, in recent years, of increased interest in view of the development of a worldwide network of gravitational wave detectors. We review recent progress in {\it analytical} methods of tackling the gravitational wave generation problem. In particular, we describe recent work in an approach which consists of matching a post-Newtonian expansion of the metric near the material source with a multipolar-post-Minkowskian expansion of the external metric. The results of such analytical methods are important notably for providing accurate theoretical predictions for the most promising targets of the LIGO/VIRGO interferometric network: the ``chirp'' gravitational waveforms emitted during the radiation-reaction-driven inspiral of binary systems of compact objects (neutron stars or black holes).
Gravitation, experiment and cosmology
Thibault Damour
Physics , 1996,
Abstract: The confrontation between general relativity (and its theoretically most plausible deviations) and experimental or observational results is summarized. Some discussion is devoted to the various methodologies used in confronting theory and experiment. Both weak-field (solar system) and strong-field (binary pulsar) tests are discussed in detail. A special discussion is devoted to the cosmology of moduli fields, i.e. scalar fields having only gravitational-strength couplings to matter.
Experimental Tests of Relativistic Gravity
Thibault Damour
Physics , 1999, DOI: 10.1016/S0920-5632(99)00828-2
Abstract: The confrontation between Einstein's gravitation theory and experimental results, notably binary pulsar data, is summarized and its significance discussed. Experiment and theory agree at the 10^{-3} level or better. All the basic structures of Einstein's theory (coupling of gravity to matter; propagation and self-interaction of the gravitational field, including in strong-field conditions) have been verified. However, the theoretical possibility that scalar couplings be naturally driven toward zero by the cosmological expansion suggests that the present agreement between Einstein's theory and experiment might be compatible with the existence of a long-range scalar contribution to gravity (such as the dilaton field, or a moduli field, of string theory). This provides a new theoretical paradigm, and new motivations for improving the experimental tests of gravity.
Black Hole and Neutron Star Binaries: Theoretical Challenges
Thibault Damour
Physics , 2007,
Abstract: Some of the theoretical challenges posed by the general relativistic description of binary systems of compact objects (neutron stars or black holes) are reviewed. We recall the various ways one can use the theory of the motion, and of the timing, of binary pulsars to test the strong-field and/or radiative aspects of General Relativity. Recent advances in the theory of the motion and radiation of binary black holes are discussed. One emphasizes the usefulness of the Effective One Body approach in providing a quasi-analytical description of the waveform emitted by coalescing binary black holes.
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