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Academic literature on the topic 'Forçage physique'
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Journal articles on the topic "Forçage physique"
Manzi Filho, Ronaldo. "POR QUE O SILÊNCIO EM TORNO DE ROBERT BLANCHÉ?" PÓLEMOS – Revista de Estudantes de Filosofia da Universidade de Brasília 2, no. 4 (March 20, 2014): 138–51. http://dx.doi.org/10.26512/pl.v2i4.11573.
Full textSt-Pierre, Émilie, and Gabriel Julien. "L’enseignement de l’éducation physique en formule hybride : l’expérience d’un enseignant au secondaire." Revue hybride de l'éducation 5, no. 1 (November 5, 2021): 162–71. http://dx.doi.org/10.1522/rhe.v5i1.1331.
Full textZhou, Guoxia, Ming Zhou, and Chaohu He. "CORE MUSCLE STRENGTH TRAINING OF YOUNG SOCCER PLAYERS." Revista Brasileira de Medicina do Esporte 28, no. 6 (December 2022): 643–46. http://dx.doi.org/10.1590/1517-8692202228062022_0109.
Full textRobert-Angers, Michaël, and Luc Godbout. "Policy Forum : Favoriser la conformité fiscale par l'encadrement de l'économie numérique — Initiative du Québec face à Uber." Canadian Tax Journal/Revue fiscale canadienne 69, no. 2 (August 2021): 529–44. http://dx.doi.org/10.32721/ctj.2021.69.2.pf.robert-angers.f.
Full textSimard, Yvan, and Nathalie Roy. "Une décennie de suivis acoustiques continus des rorquals bleus, des rorquals communs et du krill dans le parc marin du Saguenay–Saint-Laurent de 2007 à 2017." Le Naturaliste canadien 142, no. 2 (June 5, 2018): 106–14. http://dx.doi.org/10.7202/1047152ar.
Full textBizimana, Aimé-Jules, and Benoit Gauthier. "Le journalisme de guerre et les risques intégrés lors des opérations militaires en Afghanistan." Sur le journalisme, About journalism, Sobre jornalismo 10, no. 1 (June 12, 2021): 82. http://dx.doi.org/10.25200/slj.v10.n1.2021.440.
Full textBizimana, Aimé-Jules, and Benoit Gauthier. "Le journalisme de guerre et les risques intégrés lors des opérations militaires en Afghanistan." Sur le journalisme, About journalism, Sobre jornalismo 10, no. 1 (June 15, 2021): 82–97. http://dx.doi.org/10.25200/slj.v10.n1.2021.455.
Full textBaisnée, Olivier, Alizé Cavé, Cyriac Gousset, and Jérémie Nollet. "La « violence » des Gilets jaunes : quand la fait-diversification fait diversion." Sur le journalisme, About journalism, Sobre jornalismo 10, no. 1 (June 12, 2021): 28. http://dx.doi.org/10.25200/slj.v10.n1.2021.436.
Full textBaisnée, Olivier, Alizé Cavé, Cyriac Gousset, and Jérémie Nollet. "La « violence » des Gilets jaunes : quand la fait-diversification fait diversion." Sur le journalisme, About journalism, Sobre jornalismo 10, no. 1 (June 15, 2021): 28–43. http://dx.doi.org/10.25200/slj.v10.n1.2021.452.
Full textBouraoui, F., and M. L. Wolfe. "Évaluation d'un modèle des zones de pâturages et de prairies naturelles." Revue des sciences de l'eau 16, no. 4 (April 12, 2005): 459–74. http://dx.doi.org/10.7202/705518ar.
Full textDissertations / Theses on the topic "Forçage physique"
Signoret, Françoise. "Étude de situations singulières et forçage périodique dans le problème de Couette-Taylor." Nice, 1988. http://www.theses.fr/1988NICE4208.
Full textFraysse, Marion. "Rôle du forçage physique sur l'écosystème à l'est du Golfe du Lion : modulation de l'impact des apports anthropiques en sels nutritifs et matière organique étudiée par modélisation 3D couplée physique et biogéochimique." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4101.
Full textMarseille coastal zone is a contrasted area which is submitted to many inputs of nutrients and organic matter by the Rhone, by discharges from the Marseille city and the atmosphere. The objective of this study was to develop, validate and use a 3D coupled physical/biogeochemical model to study the impact of different hydrodynamic forcings (upwelling, anticyclonic eddy (ME), intrusion of the Northern Current ...) on the ecosystem, in particular the modulation of natural and anthropogenic inputs by these forcings. In this coastal zone, model development highlighted that improving the accuracy of hydrodynamics and terrestrial input was more benefit rather than complicating the biogeochemical model. Comparison with field measurements showed that even if the model have some defaults, it reproduces well enough chlorophyll-a and nutrients. The study of realistic simulations, satellite images and sea campaigns measurements provided information on the spatial and temporal characteristics of this coastal zone. This area is characterized by seasonal variations, but also by a strong daily variability due to very intense and short-lived hydrodynamic and terrestrial forcings. The information acquired during this thesis, including through the use of mass budgets, allowed to propose a hierarchy of the impacts on the biogeochemistry of the studied events occurring across the Bay of Marseilles and the coastal zone. Finally, hydrodynamic forcings appeared to mainly export the anthropogenic and terrigenous inputs offshore which maintained the oligotrophic state in most of the coastal zone, except near the mouth of the Rhone River
Ballón, Soto Roberto Michael. "Étude acoustique du macrozooplancton au Pérou : estimation de biomasse, distribution spatiale, impact du forçage physique, et conséquences sur la distribution des poissons fourrage." Thesis, Montpellier 2, 2010. http://www.theses.fr/2010MON20052/document.
Full textThe Northern Humboldt Current system (NHCS) represents less than 0.1% of the world ocean surface but produces more fish, mainly Peruvian anchovy (Engraulis ringens), per unit area than any other region in the world. Although this system produces enough macrozooplankton to feed its high production of forage fish, the paucity of information on zooplankton hampers research in the system. The objective of this study was to investigate the multiscale dynamics of the spatiotemporal distribution of the macrozooplankton biomass off Peru in relation to the physical environment and their fish predators. For that a bi-frequency acoustic method was developed and applied to extract, from historical acoustic data, high-resolution information on the biomass and the patterns of distribution of macrozooplankton, the pelagic red squad 'munida', fish and other marine compartments. This method also allows estimating the vertical extension of this epipelagic community (ZVEEC). We demonstrated that ZVEEC coincide with the upper limit of the oxygen minimum zone (OMZ), which allowed both producing high-resolution spatial data of the upper limit of the OMZ and estimating the volume habitat of anchovy. The estimated macrozooplankton biomass was about four times higher than previously reported. This estimate is in agreement with the recent findings on forage fish trophic ecology and supports the current hypotheses explaining the NHCS high fish production. The study of the impacts of the submeso- and mesoscale physical structures on macrozooplankton provided evidence of the bottom-up physical effect on the distribution of macrozooplankton biomass. We also found further evidence of the structuring bottom-up effect that macrozooplankton exert on forage fish. The high-resolution biological and physical data obtained in this study opens new perspective to perform integrated multiscale ecological studies and to calibrate biogeochemical, trophic and End-to-End models
Brodeau, Laurent. "Contribution à l'Amélioration de la Fonction de Forçage des Modèles de Circulation Générale Océanique." Phd thesis, Grenoble 1, 2007. http://www.theses.fr/2007GRE10267.
Full textThe present work focuses on improving the atmospheric forcing function used to drive ocean general circulation hindcasts of the last five decades. First, the behavior of the main parameterizations used to estimate surface fluxes that provide surface boundary conditions to OGCMs is studied in detail. The NEMO ocean/sea-ice model is then used at a 2° coarse resolution to validate atmospheric datasets especially designed to drive the DRAKKAR hierarchy of high-resolution models. These new datasets include, over the period 1958-2004, corrected surface atmospheric fields from ERA-40, a modified satellite radiation product from the ISCCP, and precipitation fields merging different global products. Relevant diagnostics tend to confirm that the simulation of several key features of the ocean circulation are significantly improved while driving DRAKKAR models with these new forcing sets
Brodeau, Laurent. "Contribution à l'Amélioration de la Fonction de Forçage des Modèles de Circulation Générale Océanique." Phd thesis, Université Joseph Fourier (Grenoble), 2007. http://tel.archives-ouvertes.fr/tel-00260841.
Full textde diverses paramétrisations utilisées pour estimer les flux de surface servant de conditions limites, le modèle de circulation générale de l'océan et des glaces de mer NEMO est utilisé sur sa configuration à 2° de résolution pour valider des jeux de données atmosphériques spécialement destinés au forçage des modèles haute résolution du projet DRAKKAR. Ces jeux de données combinent, sur une période allant de 1958 à 2004, des champs atmosphériques de surface corrigés issus de ERA-40, une recalibration des radiations satellitaires de L'ISCCP ainsi que des précipitations incorporant différents produits globaux. Divers diagnostics confirment que ces nouveaux forçages mènent à une meilleure simulation de certaines caractéristiques clefs de la circulation océanique globale.
Chabert, Pierre. "Impact of Synoptic Wind Variability on the Dynamics and Planktonic Ecosystem of the South Senegalese Upwelling Sector." Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS096.
Full textIn addition to the wind seasonal cycle, Eastern Boundary Upwelling Systems undergo fluctuations at shorter synoptic to intraseasonal time scales. This thesis focuses on the impact of synoptic wind intensifications and relaxations with a period of 5-10 days on the dynamics and planktonic ecosystem of the South Senegalese Upwelling Sector (SSUS). This system is located south of the sharp Cape Verde peninsula which acts as an abrupt coastline break and has a particularly shallow continental shelf. We aim to bring additional knowledge on this important coastal upwelling system that has received little attention, especially at synoptic time scales. To investigate this, we develop a modeling framework that involves applying idealized synoptic wind intensification and relaxation to an ensemble of climatological SSUS states. Synoptic fluctuations impact all dynamical variables out of their intrinsic variability range and shape robust anomalies of SSUS-scale and mesoscale spatial patterns. Using a mixed layer heat bud- get over the shelf, we identify the importance of horizontal processes in the SSUS heat variability and the very localized importance of vertical processes. Plankton biomass are found to oscillate in space and time in response to synoptic wind fluctuations. The atmospheric perturbation is damped during its propagation towards the upper trophic levels of the ecosystem. The response of the planktonic ecosystem is complex and heterogeneous over the shelf, with a distinctive inner shelf behavior. A diatoms budget reveals that their biomass is primarily controlled by primary production, zooplankton grazing and mortality-aggregation. The balance between these processes is responsible for the oscillatory responses of the diatoms biomass to synoptic wind events. All dynamical and biogeochemical variables exhibit modest asymmetries between wind intensification and relaxation responses. This brings support to the hypothesis that synoptic variability has a modest net impact on the climatological mean state. The implications of our results for future research questions are discussed, including the importance of biogeochemical observations and advances in plankton ecosystem modeling
Mathiot, Pierre. "Influence du forçage atmosphérique sur la représentation de la glace de mer et des eaux de plateau en Antarctique dans une étude de modélisation numérique." Phd thesis, Grenoble 1, 2009. http://www.theses.fr/2009GRE10013.
Full textThe representation in numerical models of dense shelf water formation and interaction between sea ice, ocean, and atmosphere are essential for realistic simulation of bottom water mass and thermohaline circulation. The purpose of this work is to improve the representation of basic processes controling the formation and modification of shelf dense water in Antarctic like sea ice, ice shelves and forcing fields in NEMO ocean/sea-ice model. Series of realistic simulations show that fine tuning for the sea ice model, ice shelf parametrization, and katabatic winds correction have a positive impact on simulated sea ice, polynya and shelf water properties. However, these improvements are not able to correct all initial flaws. Other simulations are carried out, to test the effect of adifferent atmospheric forcing obtained from a regional downscaling of global reanalysis ERA40 in Antarctic area, performed with a regional mesoscale atmospheric model. This work shows that turbulent atmospheric variables (temperature, humidity and wind) have a strong positive impacts on sea ice and shelf water properties. This impact is greater that the tuning, parametrization and correction performed previously. Nevertheless, great effort are yet necessary to produce the regional forcing fields that sea-ice and ice shelves require
Mathiot, Pierre. "Influence du forçage atmosphérique sur la représentation de la glace de mer et des eaux de plateau en Antarctique dans une étude de modélisation numérique." Phd thesis, Université Joseph Fourier (Grenoble), 2009. http://tel.archives-ouvertes.fr/tel-00375960.
Full textJoishi, Manoj. "Numerical investigation of particle deposition in a turbulent boundary layer with forced turbulence in the external flow." Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0251.
Full textDeposition of particles on a wall plays a significant role in fluid-solid processes such as inclusions recovery from liquid steel in ladle furnace, that controls inclusion cleanliness upstream from solidification. The aim of this work is to study the turbulent deposition and capture of particles on a wall, in a situation where turbulence in the boundary layer originates both from wall shear and from agitation in the external flow. In a ladle furnace, such an agitation would result from bubble injection. A framework for simulations at mesoscopic scale in which particles are represented as points but the turbulence is fully resolved has been developped using an in-house solver, where a Lattice Boltzmann Method (LBM) solves flow dynamics and linear isotropic forcing generates artificial turbulence. Lagrangian Particle Tracking (LPT) is used to achieve one way coupling between particle motions and turbulent flow. These numerical methods were applied to Direct Numerical simulation (DNS) of a fully developed turbulent boundary layer in which particles smaller than the Kolmogorov length scale are introduced. The deposition mechanisms in aerosol conditions have been analyzed and quantified into a statistical law for deposition velocity in terms of Stokes number, and validated against data from the literature. Such simulations have provided a better understanding of deposition and capture mechanisms, depending on the turbulent flow in a wall boundary layer and on particle physical properties. Also, preliminary simulations in hydrosol conditions that match actual ladle operation have shown that the framework developed in this work can be applied to investigate inclusion behavior in secondary steel-making although statistical analysis in this work focused on aerosols
Herbert, Gaëlle. "Modélisation et observation de la dynamique haute fréquence de la circulation du golfe de Gascogne." Phd thesis, Toulouse 3, 2012. http://thesesups.ups-tlse.fr/1751/.
Full textWe analyse the variability of winter upper circulation in the southern Bay of Biscay from satellite and in situ observations and numerical simulations based on the SYMPHONIE code. We aim to get a better insight on the high frequency dynamics (a few hours to a few days) due to atmospheric forcing and estimate the adequacy of available tools to observe and simulate these processes. We first determine whether a coastal altimetric dataset (based on TOPEX/Poseidon and Jason-1 alongtrack data) can detect occurrences of a slope current (the Iberian Poleward Current, IPC). The results show the ability of altimetry to monitor IPC pulses under any atmospheric conditions or when the SST signature is weak, that makes it as an essential component for the IPC observing system in addition to satellite SST and mooring data. Then, we analyse the ocean response to storm Klaus that occurred on January 24th 2009 and its representation in a numerical simulation. More specifically, we characterize the response in temperature and salinity and the vertical mixing processes, the response in surface currents and the surge associated to the windstorm. The realism of the numerical simulation to represent these processes is evaluated by comparisons with satellite and in situ observations. Besides, a large part of the study is dedicated to improve the numerical simulations making several tests on parametrisations