Search results for "Cité"
showing 10 items of 403 documents
Effective simulation model and new control strategy to improve energy efficiency in hybrid electric land vehicle
2014
The main objectives of this work is to develop an effective modeling method for an easydeployment of a control strategy, to review and study an optimal control strategy for a specific application, and to analyze improvement that can be effected to engine for better efficiency in hybrid vehicle architecture. The scopes of this work include the simulation part of the studied system and its validation with experimental results. Study cases are used to analyze optimization that can be effected to the original system. A well established optimization tool is chosen to optimize the actual control strategy and becomes a benchmark of a new optimal control strategy to be deployed in the system. A pre…
Smart strategy of an hybrid vehicle global energetic system gestion
2018
The main objective of this work is to develop an optimal management strategy to improve energetic efficiency of hybrid electric vehicle. This work is composed by a mobility experimental analysis part, a numerical modelization part and an optimization part of the energy management strategy. The study of mobility allow to highligth and quantify the predictibility of trips, due to a constraint mobility.The dynamic modelling of the vehicle which is necesary to study perfomance of strategies, was realized by Energetic Macroscopic Representation (EMR) which is a good methode in this case. The proposed strategy is based on the predictive control (MPC), solve by a method of Programming Quadratic, a…
La performance académique des étudiants en première année universitaire : influence des capacités cognitives et de la motivation
2012
Today, academic failure is closely monitored, especially when first year students are concerned. The aim of this dissertation is the comprehension of the mechanism that builds academic success. The approach is both quantitative and integrative. For this purpose, data have been collected from 700 first year students in social administration, law and psychology areas in the university of Burgundy. Collected information allows to control academic and demographic factors. This dissertation focuses on two aspects : a measure of the student’s cognitive abilities at their entry in the university and a measure of their motivation during the course of the year. The results show that the school backg…
The Education Production Function reviewed in the framework of Education For All in Sub-Saharan Africa: from theoretical and methodological bounds to…
2007
The Coleman report (1966) was the first of numerous researches exploring quality of learning determinants analysis. With the Education Production Function (EPF), economists have greatly contributed to the extension of this research domain. Actually, empirical works are leading the field with important methodological debates which have fuelled controversies (Hanushek, 2003; Krueger, 2003). Thus, methodological issues have particularly rallied researchers' interests on empirical estimations, while academic researches on the renewal of the theoretical framework have remained scarce despite obvious bounds. Without contesting the validity of miscellaneous estimation problems and the necessity of…
Effect of the host plant on the immunity of a phytophagous insect : influence of grape variety on the ability of the European grapevine moth to defen…
2013
In tritrophic interactions involving phytophagous insects, host plants and natural enemies, trophic levels are highly dependent on each other. Host plant may strongly affect directly phytophagous insect and indirectly natural enemies growing on these phytophagous insects. When a natural enemy attacks a phytophagous insect, the host immune system constitutes the last chance for the host to survive to an infection. A great variation of insect immune system is generally found in populations for susceptibility to pathogens, suggesting that variable selection pressures may have shaped and driven adaptation of immune traits. This project aims to determine the influence of both host plant and natu…
Implications du stress oxydant et du fer dans la cardiotoxicité des anthracyclines et du trastuzumab
2015
Cancer treatment has advanced considerably in recent years, allowing a reduction in mortality. Longer life expectancy of patients has helped to highlight the delayed onset of cardiovascular toxicity induced by these chemotherapies. The pathophysiological mechanisms responsible for these cardiac dysfunctions are complex, entangled and remain partially unknown. A better understanding of the phenomena involved in these cardiotoxicities is needed to prevent their occurrence. Therefore, we have developed two different experimental approaches to understand the pathophysiological mechanisms involved in the cardiac toxicity of anthracyclines and trastuzumab.A first experimental study aimed to clari…
Charles Nodier et la linguistique des origines
2014
International audience; Du point de vue de l'histoire des idées, Charles Nodier occupe une position doublement importante. Il est l'auteur du premier livre en français contenant le mot « linguistique » dans le titre et il est le premier président de cet Institut des Langues qui, le 21 décembre 1839, deviendra la première « Société de Linguistique » française. Si on s'en tenait à ce critère strictement lexicologique, on ne manquerait donc pas d'arguments pour affirmer que Nodier a joué un rôle clé dans l'apparition de la linguistique en France. Peu de linguistes accepteraient pourtant aujourd'hui de souscrire à une pareille affirmation. Pour la plupart d'entre eux, la linguistique ne se mani…
Infarctus cérébral et plasticité : focus sur le BDNF
2011
Functional recovery after ischemic stroke largely involves brain plasticity and more accurately its ability to reorganize the neuronal networks spared by the infarct. Studies conducted on animals using different ischemic stroke models have demonstrated that plastic changes are induced by BDNF (Brain-Derived Neurotrophic Factor). Hence, increasing levels of BDNF in the brain is considered a promising therapeutic strategy to reduce post-stroke impairments. In this context, our work had 2 aims: 1) In a rat model, to identify cells involved in the over-production of BDNF and to evaluate the pertinence of the measurement of circulating BDNF levels to estimate brain BDNF levels; 2) In ischemic st…
L'efficacité du tableau blanc interactif sur les acquisitions des élèves à l'école élémentaire : quel regard des enseignants ?"
2017
International audience
Broadening Access to Primary Education: Contract Teacher Programs and Their Impact on Education Outcomes in Africa – An Econometric Evaluation for Ni…
2006
06004; For Sub-Saharan Africa as a whole, but particularly for countries in the Sahel zone, full primary enrolment and completion at acceptable quality as codified in the Millennium Development Goals and the Education for All objectives still remains a major challenge. In order to enhance education supply, many of these countries have launched large scale teacher recruitment programs in recent years, whereby the teachers are no longer engaged in civil servant positions, but on the basis of fixed-term contracts typically implying considerably lower salaries and a sharply reduced duration of professional training. While this policy has led to a boost of primary enrolment, stakeholders in the …