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Academic literature on the topic 'Dynamique d’effort'
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Journal articles on the topic "Dynamique d’effort"
Elidrissi, Djamila, Valérie Hauch, and Sabrina Loufrani-Fedida. "La dynamique des compétences relationnelles dans le développement des entreprises à internationalisation rapide et précoce : une approche multiniveaux." Revue internationale P.M.E. 30, no. 1 (May 3, 2017): 85–119. http://dx.doi.org/10.7202/1039787ar.
Full textGaudet, Gérard, and Pierre Lasserre. "Dynamiques comparées des effets de la taxation minière." Articles 66, no. 4 (January 28, 2009): 467–97. http://dx.doi.org/10.7202/601550ar.
Full textHavard, Michel, A. Fall, and Aboubakar Njoya. "La traction animale au coeur des stratégies des exploitations agricoles familiales en Afrique subsaharienne." Revue d’élevage et de médecine vétérinaire des pays tropicaux 57, no. 3-4 (March 1, 2004): 183. http://dx.doi.org/10.19182/remvt.9889.
Full textDissertations / Theses on the topic "Dynamique d’effort"
Berthou-Camara, Mariama. "Etude de l’influence de la dynamique de chargement sur le comportement tribologique du contact." Paris 6, 2008. http://www.theses.fr/2008PA066401.
Full textFaure, Charly. "Approches bayésiennes appliquées à l’identification d’efforts vibratoires par la méthode de Résolution Inverse." Thesis, Le Mans, 2017. http://www.theses.fr/2017LEMA1002.
Full textIncreasingly accurate models are developped to predict the vibroacoustic behavior of structures and to propose adequate treatments.Vibration sources used as input of these models are still broadly unknown. In simulation, an error on vibration sources produces a bias on the vibroacoustic predictions. A way to reduce this bias is to characterize experimentally the vibration sources in operational condition before some simulations. It is therefore the subject of this PhD work.The proposed approach is based on an inverse method, the Force Analysis Technique (FAT), and allows the identification of vibration sources from displacement measurements. The noise sensibility, common to most of inverse methods, is processed in a probabilistic framework using Bayesian methods.This Bayesian framework allows: some improvements of the FAT robustness; an automatic detection of sources; the sparse identification of sources for pointwise sources; the model parameters identification for the purpose of homogenized structures; the identification of unsteady sources; the propagation of uncertainties through force spectrum (with credibility intervals); measurement quality assessment from a empirical signal to noise ratio.These two last points are obtained from a unique scan of the structure, where more traditional statistical methods need multiple scans of the structure. Both numerical and experimental validations have been proposed, with a controled excitation and with an industrial source. Moreover, the procedure is rather unsupervised in this work. Therefore, the user only has a few number of parameters to set by himself. In a certain extent, the proposed approaches can then be applied as black boxes
Susbielle, Guillaume. "Perturbation de la dynamique de l’hétérochromatine par des ligands synthétiques du petit sillon de l’ADN." Toulouse 3, 2006. http://www.theses.fr/2006TOU30109.
Full textThe satellite III sequences (SATIII) composing the pericentric regions of the X chromosome are the only alphoïd sequences found in Drosophila melanogaster. They are similar to those found near the centromeres of mammalian cells. Their structural characteristics, based on their biased, A•T rich, nucleotidic composition, make them good targets for different types of artificial and natural molecules. We propose to use the SAT III sequences as a model to study the histone code, the function of pericentric regions and as a tool to evaluate the pharmacological potential of diamidines. Our work with minor groove binding agents, allowed us to shed light on the functional role of topoisomerase II, a major target in anticancer and antiparasitic therapies, in the heterochromatin assembly process and in the antiproliferative mode of action of diamidines
Wang, Lijian. "Force equalization for active/active redundant actuation system involving servo-hydraulic and electro-mechanical technologies." Thesis, Toulouse, INSA, 2012. http://www.theses.fr/2012ISAT0038/document.
Full textOn the way to more electric aircraft (MEA), more and more power-by-wire (PBW) actuators are involved in the flight control system. For a hybrid redundant actuation system composed by the conventional hydraulically powered actuators and the PBW actuators, one major issue while they operate on active/active mode is the force fighting between channels. As the grave influence of force fighting on accelerating material fatigue and increasing power consumption,it must be addressed with attention. This thesis was aiming at proposing some effective force equalization control strategies for the hybrid actuation system involving one servo-hydraulic actuator (SHA) and one electro-mechanical actuator (EMA). For this objective, the position controllers for SHA and EMA were designed and validated as a first step. Then, a virtual test bench regarding to the realistic behaviors was built in the AMESim simulation environment to accelerate the controller design and enable the robustness study. Following this, 2 static force equalization control strategies were proposed and experimentally validated. The first strategy hat introduced integral force fighting signal to compensate the actuator position control was proved a good candidate solution. In the next part, 3 dynamic force equalization strategies were proposed and assessed on the virtual test bench. Their performance sensitivities to the parameter uncertainties were studied through Monte-Carlo method. The first strategy that introduced velocity and acceleration feed-forwards to force the SHA and EMA having similar pursuit dynamics showed a good force equalization performance as well as good segregation and good robustness. In the end, the work presented in thesis was concluded and perspective was given to the ongoing work