Philippe JEAN-PIERRE

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2004
• Auteurs : Nathalie DompnierJean-Philippe Roy
• Organismes : Pacte, Laboratoire de sciences sociales
• Publié dans Revue Politique et Parlementaire le 25/10/2020

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2004
• Auteurs : Jean-Paul BanquetYves BurnodPhilippe GaussierMathias QuoyArnaud Revel
• Organismes : Plasticité cérébrale et adaptations des fonctions visuelles et motrices Réseau National des Systèmes Complexes Equipes Traitement de l'Information et Systèmes Equipes Traitement de l'Information et Systèmes Equipes Traitement de l'Information et Systèmes

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2004
• Auteurs : Philippe KeckhutStuart McdermidDaan SwartThomas McgeeSophie Godin-BeekmannAlberto AdrianiJohn BarnesJean-Luc BarayHassan BencherifHans ClaudeAleide Di SarraGeorgio FioccoGeorg HansenAlain HauchecorneThierry LeblancChoo Hie LeeShiv PalGerard MegieHideaki NakaneRoland NeuberWolfgang SteinbrechtJeffrey Thayer
• Organismes : Service d'aéronomie National Institute for Public Health and the Environment [Bilthoven] NASA Goddard Space Flight Center Service d'aéronomie CNR Institute of Atmospheric Sciences and Climate National Oceanic and Atmospheric Administration Laboratoire de Météorologie Physique Observatoire de Physique du Globe de Clermont-Ferrand Laboratoire de physique de l'atmosphère Deutscher Wetterdienst [Offenbach] Norwegian Institute for Air Research Service d'aéronomie Jet Propulsion Laboratory Science and Art Innovation Inc. Service d'aéronomie National Institute for Environmental Studies Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine Meteorologisches Observatorium Hohenpeißenberg University of Colorado [Boulder]
• Publié dans International Journal of Environmental Monitoring and Analysis le 06/02/2024

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2004
• Auteurs : Jean-Philippe DelahayeGogniat GuyChristian RolandPierre Bomel
• Organismes : Institut d'Électronique et des Technologies du numéRique Laboratoire d'Electronique des Systèmes TEmps Réel Laboratoire d'Electronique des Systèmes TEmps Réel Lab-STICC_UBS_CACS_MOCS

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Résumé : This paper discusses the implementation of modulation chains for multi-standards communication on a dynamically and partially reconfigurable heterogeneous platform. Implementation results highlight the benefit of considering a DSP/FPGA platform instead of a multi-DSP platform since the FPGA supports efficiently intensive computation components which reduces the DSP load. Furthermore partial dynamic reconfiguration increases overall performances compared to total dynamic reconfiguration since there is 45% of bitstream size reduction which leads to a 45% decrease of the whole reconfiguration time. The implementation of modulation chains for multi-standards communication proves the availability of new technology to support efficiently Software Defined Radio.

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Fichiers liés : delahaye_2004wsr.pdf

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• Type de publi. : Autre publication
• Date de publi. : 01/01/2004
• Auteurs : M. GarnierR. LaplanaNicolas A TurpinPhilippe BontemsG. RotillonI. BarlundM. KaljonenS. TattariF. FeichtingerP. StraussR. HaverkampAntonio Lo PortoG. BenigniA. LeoneM.N. RipaO.M. EkloE. RomstadThierry BioteauFrançois BirgandPierre BordenaveJean-Marie LescotLaurent PietFrédéric Zahm
• Organismes : IRSA BARI ITA Aménités et dynamiques des espaces ruraux Gestion environnementale et traitement biologique des déchets Institut National de la Recherche Agronomique Université Paris Nanterre SYKE HELSINKI FIN SYKE HELSINKI FIN SYKE HELSINKI FIN IKT VIENNE AUT IKT VIENNE AUT Université Grenoble Alpes [2016-2019] IRSA BARI ITA Università degli studi della Tuscia = Tuscia University [Viterbo] Università degli studi della Tuscia = Tuscia University [Viterbo] Università degli studi della Tuscia = Tuscia University [Viterbo] Norwegian Crop Research Institute AGRICULTURAL UNIVERSITY OF NORWAY AAS NOR Gestion environnementale et traitement biologique des déchets Gestion environnementale et traitement biologique des déchets Gestion environnementale et traitement biologique des déchets Aménités et dynamiques des espaces ruraux Aménités et dynamiques des espaces ruraux Aménités et dynamiques des espaces ruraux

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Résumé : This paper deals with the work perfored with the project: Systems approach to environmentally acceptable farming AgriBMPWater. The main objective of the project has been to provide planners in charge of the implementation of BMPs to mitigate non point source pollution in water with: 1) A guideline allowing the definition of critical areas on which efforts should be placed in priority. 2) A selection grid permitting the assessment of BMPs in a three-dimensional space defined by environmental effectiveness, associated economics costs and social acceptability by farmers and land managers.

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• Type de publi. : Rapport
• Date de publi. : 01/01/2004
• Auteurs : R. LaplanaNicolas A TurpinPhilippe BontemsPierre BordenaveThierry BioteauO.M. EkloM. GarnierR. HaverkampJean-Marie LescotLaurent PietI. BarlundM. KaljonenP. StraussS. TattariA. LeoneAntonio Lo PortoM.N. RipaE. RomstadG. RotillonFrédéric Zahm
• Organismes : Aménités et dynamiques des espaces ruraux Gestion environnementale et traitement biologique des déchets Institut National de la Recherche Agronomique Gestion environnementale et traitement biologique des déchets Gestion environnementale et traitement biologique des déchets Norwegian Crop Research Institute IRSA BARI ITA Laboratoire d'étude des transferts en hydrologie et environnement Aménités et dynamiques des espaces ruraux Aménités et dynamiques des espaces ruraux SYKE HELSINKI FIN SYKE HELSINKI FIN IKT PETZENKIRCHEN AUT SYKE HELSINKI FIN Università degli studi della Tuscia = Tuscia University [Viterbo] IRSA BARI ITA Università degli studi della Tuscia = Tuscia University [Viterbo] AGRICULTURAL UNIVERSITY OF NORWAY AAS NOR Université Paris Nanterre Aménités et dynamiques des espaces ruraux

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Résumé : AgriBMPWater is an european research project of the 5th RTD Framework program (Key Action: Sustainable Management and Quality of Water). This report presents the deliverable n°23 (BMPs effectiveness measure) of this research project.

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2004
• Auteurs : Marc FournierLaurent JolivetPhilippe DavyJean-Charles Thomas
• Organismes : Laboratoire de tectonique Laboratoire de tectonique Centre Armoricain d'Etude Structurale des Socles Laboratoire de Géophysique Interne et Tectonophysique
• Publié dans Geophysical Journal International le 25/10/2020

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Résumé : The deformation of the eastern Asian lithosphere during the first part of the India-Asia collision was dominated by subduction-related extension interacting with far effects of the collision. In order to investigate the role of large-scale extension in collision tectonics, we performed analogue experiments of indentation with a model of lithosphere subjected to extension. We used a three-layer rheological model of continental lithosphere resting upon an asthenosphere of low viscosity and strained along its southern boundary by a rigid indenter progressing northward. The lithosphere model was scaled to be gravitationally unstable and to spread under its ownweight, so that extension occurred in thewhole model. The eastern boundarywas free or weakly confined and always allowed eastward spreading of the model. We studied the pattern of deformation for different boundary conditions. The experimental pattern of deformation includes a thickened zone in front of the indenter, a major northeast-trending left-lateral shear zone starting from the northwest corner of the indenter, antithetic north-south right-lateral shear zones more or less developed to the east of the indenter, and a purely extensional domain in the southeastern part of the model. In this domain, graben opening is driven by gravitational spreading, whereas it is driven by gravitational spreading and indentation in the northeastern part where grabens opened along strike-slip faults. The results are compared with the Oligo- Miocene deformation pattern of Asia consecutive to the collision of India. Our experiments bring a physical basis to models which favour distributed deformation within a slowly extruded wide region extending from the Baikal Rift to the Okhotsk Sea and to southeast Asia and Indonesia. In this large domain, the opening of backarc basins (Japan Sea, Okinawa Trough, South China Sea) and continental grabens (North China grabens) have been associated with approximately north-south-trending right-lateral strike-slip faults, which accommodated the northward penetration of India into Eurasia.

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Fichiers liés : Fournier_et_HAL_GJI_2004.pdf

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2004
• Auteurs : Eric AnterrieuBruno PicardManuel Martin-NeiraPhilippe WaldteufelMartin SuessJean-Luc VergelyYann H. KerrSylvie Roques
• Organismes : Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique Service d'aéronomie Centre d'études spatiales de la biosphère Laboratoire d'Astrophysique de l'Observatoire Midi-Pyrénées

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Résumé : SMOS is a mission of the European Space Agency (ESA) devoted to the monitoring of Soil Moisture and Ocean Salinity maps at global scale from L-band space borne radiometric observations. It will be the first attempt to apply to remote sensing of the Earth surface, the concept of Synthetic Aperture Imaging Radiometers (SAIR), initially developed for radio astronomy. The single payload of the mission is a Microwave Imaging Radiometer with Aperture Synthesis (MIRAS) operating at 1.415 GHz. Interferometer measurements, also called complex visibilities, are obtained by cross-correlating the signals collected by every pairs of antennae of a Y-shaped interferometric array. They are related to the radiometric brightness temperature of the observed scene by a spatial FOURIER-like integral. A regularized reconstruction process provides a band-limited solution to the corresponding inverse problem where the GIBBS oscillations caused by the truncation of the complex visibilities to the star-shaped frequency coverage are damped with an appropriate windowing function. The reconstructed brightness temperature map is obtained in the reference frame of the antenna. Up to now a single isotropic windowing function has been used in simulating this process; consequently this map exhibits a constant and isotropic angular resolution over the instrument field of view. However, owing to the geometry of the problem, these properties are no longer true for its projection onto the Earth's surface. Since the retrieval of physical quantities implies to combine several measurements for various incidence angles, the variations in shape and size of the weighting function at surface level (the "SMOS pixel") may result in significant errors when the SMOS pixel features strong heterogeneities. It has been suggested that this problem could be solved by the so called "strip adaptive" processing, i.e. using a specific windowing function for every location in the SMOS antenna frame of reference, in order to achieve a close to uniform pixel at surface level. In this paper, taking advantage of the band-limited solution to the reconstruction problem, various windowing functions are used in order to provide maps which exhibit to various extents a constant and isotropic spatial resolution at ground level. This contribution describes the properties of these windowing functions and how the corresponding multi-windows apodization (i.e. strip adaptive processing) is performed. To support the theory and to illustrate the performances of this imaging method, numerical simulations are presented within the frame of the SMOS project. Various options are illustrated in terms of their consequences for soil moisture measurements retrieved from future SMOS data.

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• Type de publi. : Communication dans un congrès
• Date de publi. : 01/01/2004
• Auteurs : Philippe SchoeneichDidier HantzJean-Marc VengeonM. FrayssinesPhilip DelineFrançois AmelotJ. SavaryJ.-D. RouillerM. Paganone
• Organismes : Pacte, Laboratoire de sciences sociales Laboratoire Interdisciplinaire de Recherche Impliquant la Géologie et la Mécanique Laboratoire Interdisciplinaire de Recherche Impliquant la Géologie et la Mécanique Environnements, Dynamiques et Territoires de Montagne Environnements, Dynamiques et Territoires de Montagne CREALP - Research Centre on Alpine Environment

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2004
• Auteurs : Augustin BaasJean-Philippe KarrMarco RomanelliAlberto BramatiElisabeth Giacobino
• Organismes : Laboratoire Kastler Brossel Laboratoire Kastler Brossel Laboratoire Kastler Brossel Laboratoire Kastler Brossel Laboratoire Kastler Brossel
• Publié dans Physical Review B: Condensed Matter and Materials Physics (1998-2015) le 02/11/2020

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Résumé : We report the observation of optical bistability in a microcavity pumped at the \"magic angle\". Experimental evidence is given in the form of a hysteresis cycle of the nonlinear emission as a function of the pump intensity or the position of the excitation spot. The results can be well understood with simple theoretical considerations that underline the fundamental analogy between our system and an optical parametric oscillator.

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