Search results for "facteurs"
showing 10 items of 30 documents
Etude du rôle du monoxyde d’azote (NO) dans la réponse du transcriptome d’Arabidopsis thaliana aux oligogalacturonides, un éliciteur des réactions de…
2012
SPEIPM; International audience; Le monoxyde d’azote (NO) est capable de réguler chez les plantes de nombreux processus physiologiques dont les réponses des plantes aux pathogènes. Peu d’informations sont disponibles aujourd’hui sur les mécanismes expliquant le rôle du NO endogène dans ce contexte physiologique. Grâce à une étude transcriptomique, nous avons caractérisé chez Arabidopsis thaliana, des gènes cibles du NO produit en réponse à un éliciteur des réactions de défense, les oligogalacturonides (OG). L’analyse a permis d’identifier parmi ces gènes cibles, un nombre important de gènes impliqués dans les réponses aux stress biotiques tels que des facteurs de transcription ou des protéin…
Étude de la collaboration interprofessionnelle dans le secteur hospitalier français : le rôle des facteurs organisationnels
2022
In a troubled hospital context subject to many changes and constraints, inter-professional collaboration is a major asset in terms of adaptation, quality of care and managerial innovation. However, its levers remain to be specified and its implementation is complex. A review of the literature and an empirical survey lay the foundation for our research work, which has various objectives. First of all, it seeks to clarify the place of interprofessional collaboration in the hospital sector. Then he seeks to understand the influence of organizational factors on emerging states of collaboration. Finally, it examines how health managers can rely on organizational factors to enable the emergence o…
Les followers ont-ils vraiment de l'importance dans le modèle de Stackelberg?
2011
In this paper, we consider a T-stage linear model of Stackelberg oligopoly. First, we show geometrically and analytically that under the two conditions of linear market demand and identical constant marginal costs, the T-stage Stackelberg model reduces to a model where T oligopolies exploit residual demand sequentially. At any stage, leaders behave as if followers did not matter. Second, we study social welfare and convergence toward competitive equilibrium. Especially, we consider the velocity of convergence as the number of firms increases. The convergence is faster when reallocating firms from the most to the less populated cohort until equalizing the size of all cohorts.
Sérologie discordante du VIH/sida et vie des couples en République du Congo : profil sociodémographique, comportements, facteurs de survie et prise e…
2020
For more than two decades, the health of populations has been at the heart of developmental issues. Population health issues fall within the "health, population and development" paradigm. It is in this spirit that experts demonstrated at the 1994 Cairo Conference on Population and Development that HIV/AIDS affects both population growth and sustainable development. Likewise, HIV infection is a source of discrimination, social inequalities, and the weakening of couples and families to the point where some individuals are even ostracized because of their HIV-positive status. In these conditions, how do people of different serological status live their married lives and their procreation despi…
Asymptotic analysis of the form-factors of the quantum spin chains
2020
Since a long-time, the quantum integrable systems have remained an area where modern mathematical methods have given an access to interesting results in the study of physical systems. The exact computations, both numerical and asymptotic, of the correlation function is one of the most important subject of the theory of the quantum integrable models. In this context an approach based on the calculation of form factors has been proved to be a more effective one. In this thesis, we develop a new method based on the algebraic Bethe ansatz is proposed for the computation of the form-factors in thermodynamic limit. It is applied to and described in the context of isotropic XXX Heisenberg chain, w…
Breast cancer screening : socioeconomic factors influencing the participation and screening round adequacy
2013
Mammography screening allowed breast tumors detection in early stage while treatments are less aggressive. Despite the fact that organized mammography screening has been free of charge for the target population since 2004 in France, the participation rate to the programme remains low.The aim of the studies was to investigate individual and area-level socioeconomic factors explaining low breast cancer screening attendance, individual factors influencing mammography screening round adequacy and to assess the evidence of screening round adequacy in the discovery of breast tumors.The results showed that women living in most deprived areas or rural areas, those covered by self-employed insurance…
Telomere length and cardiovascular disease
2010
SummaryTelomeres are structures composed of deoxyribonucleic acid repeats that protect the end of chromosomes, but shorten with each cell division. They have been the subject of many studies, particularly in the field of oncology, and more recently their role in the onset, development and prognosis of cardiovascular disease has generated considerable interest. It has already been shown that these structures may deteriorate at the beginning of the atherosclerotic process, in the onset and development of arterial hypertension or during myocardial infarction, in which their length may be a predictor of outcome. As telomere length by its nature is a marker of cell senescence, it is of particula…
L’influence des facteurs stratégiques et organisationnels sur les relations entre contrôle de gestion environnemental et apprentissage organisationne…
2020
Cet article étudie les relations entre contrôle de gestion environnemental (CGE) et apprentissage organisationnel (AO) en inscrivant le modèle de Simons (1995) dans une perspective contingente. Par des facteurs stratégiques et organisationnels, ce modèle enrichi explique les liens entre les modes de contrôle (diagnostique et interactif) de Simons et les niveaux d’apprentissage (en simple et double boucle) d’Argyris et Schön (1978). S’appuyant sur le « cas révélateur » d’une éco-PME missionnaire, l’étude montre l’influence de trois facteurs (valeurs fortes, stratégie proactive, cycle de vie des activités) sur les quatre configurations relationnelles CGE-AO et ouvre de nouvelles perspectives …
Thermodynamic limit of particle-hole form factors in the massless XXZ Heisenberg chain
2010
We study the thermodynamic limit of the particle-hole form factors of the XXZ Heisenberg chain in the massless regime. We show that, in this limit, such form factors decrease as an explicitly computed power-law in the system-size. Moreover, the corresponding amplitudes can be obtained as a product of a "smooth" and a "discrete" part: the former depends continuously on the rapidities of the particles and holes, whereas the latter has an additional explicit dependence on the set of integer numbers that label each excited state in the associated logarithmic Bethe equations. We also show that special form factors corresponding to zero-energy excitations lying on the Fermi surface decrease as a …
Les déterminants de la réussite à l’université. Quels apports de la recherche en Éducation ? Quelles perspectives de recherche ?
2016
In France, the university is experiencing the problem of failure, especially in the first cycle. This article aims to establish, in a chronological perspective, a literature review of the contributions of educational research in the French context, the various factors contributing to this failure. The aim is firstly to show how evolved the research on the determinants of academic success since the 1990s. It is, secondly, to examine what types of research can still be conducted on the subject. That will lead us in particular that, despite questioning from several decades of university teaching, few studies have so far been conducted in the French context regarding the impact of teaching prac…