Dissertations / Theses on the topic 'Locus de contrôle environnemental'
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Giorgetti, Carole. "Part relative de l’architecture et de la résistance partielle dans le contrôle génétique du ralentissement des épidémies d’ascochytose à Didymella pinodes chez le pois." Rennes, Agrocampus Ouest, 2013. http://www.theses.fr/2013NSARC113.
Full textPlant architecture is one of the plant levers that may allow the reduction of aerial epidemics through escape, through modifying either directly (spore dispersal) or indirectly (micro-climate, organ receptivity) processes likely to slow down epidemic development. Frequent co-localizations of QTL controlling architectural or development traits and of QTL controlling partial resistance suggest interactions between underlying genetic factors, either through genetic linkage or through pleiotropy. In pea, internode length, Leaf Area Index and tissue receptivity are likely to reduce, through escape, the development of D. Pinodes, an aerial fungal pathogen. Co-localizations between QTL/genes controlling plant height, flowering and aerial biomass and QTL controlling partial resistance were identified raising the issue of a common genetic control. The aim of the thesis was to first have an overview of genetic regions involved in the control of architectural and developmental traits known to influence D. Pinodes epidemics and those controlling partial resistance, under experimental conditions where escape was reduced. Experiments on Recombinant Inbred Lines populations were conducted under controlled conditions and field conditions. Ten genomic regions showing co-localizations were identified. Among them, four regions located on linkage groups III, V and VI were highly stable under controlled conditions and included QTL controlling stipule length, branch number, plant height and flowering traits, all associated to QTL controlling partial resistance. The hypothesis of genetic linkage to explain these co-localizations was then investigated using recombinant inbred lines showing residual heterozygosity in the CLR located on linkage groups III and V, based on the production of HIF. This allowed to validate QTL effects and to potentially reduce their confidence intervals, but did not show any strong evidence for a genetic linkage disruption. The rational use of these genetic regions in breeding strategies can now be considered in order to construct pea ideotypes combining architecture and resistance allowing a better control of D. Pinodes epidemics
Ul, Mulk Rudaba. "Towards sustainability : understanding the influence of attitude, perceived risk and environmental locus of control on willingness to pay for renewable energy sources." Electronic Thesis or Diss., Aix-Marseille, 2022. http://theses.univ-amu.fr.lama.univ-amu.fr/221202_ULMULK_476cewyjw426ihdm871hez235wmr_TH.pdf.
Full textThe research addressed consumer characteristics affecting consumer willingness to pay (WTP) for renewable energy sources (RES). Three sequential studies were conducted, Study I compared the impact of attitude of Pakistani and French consumers on WTP for RES and, the next two studies focused only on Pakistani consumers. Study II examined the impact of risk dimensions on WTP as mediated by perceived value and moderated by consumer innovativeness. Study III investigated the relationship between internal/external environmental locus of control (ELOC) and eco literacy on WTP as mediated by pro-environmental behaviour. The results in study I showed that WTP for RES of Pakistani consumers was comparatively higher than French consumers. Similarly, the dimensions of attitude impacting WTP also varied between the French and Pakistani samples. In study II we found a negative and significant relationship between perceived risk and perceived value, this implies as the risk increases the perceived value of RES decreases and so does the WTP. However, the impact of psychological risk was consecutively higher than functional, financial and social risk. In Study-III we found, the internal ELOC positively and the external ELOC negatively affect the consumer's WTP. Eco-literacy turns out to be a strong predictor of WTP. Overall, the relationship between ELOC, eco-literacy, and WTP is successfully mediated by pro-environmental behavior. This research supported our theoretical propositions, contributed to literature, and provided academic and practical implications
Bontems, Philippe. "Contrôle de la pollution en présence d'asymétries d'information." Paris 10, 1995. http://www.theses.fr/1995PA100025.
Full textThe work presented in this thesis belongs to the field of pollution control under asymmetric information. In the first part the problem of non-point source pollution is analyzed. In this case, traditional measures like taxes or quotas are not available as individuals emissions cannot be observed at a reasonable cost by the regulatory agency. The form that the polluter pay principle can take in this context is examined. The choice of the agency between regulate from the level of ambient pollution level or damage realized and regulate the abatement effort is also analyzed. In the second part, I analyses the interactions between environmental policy and the wish of a government to sustain the competitively of home pollutant industries that compete on oligopolistic markets. We extend the results obtained by the literature to the realistic case of an uninformed agency
Gammoudi, Ibtissem. "Biocapteur à base de bactéries pour le contrôle environnemental." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2012. http://tel.archives-ouvertes.fr/tel-00985827.
Full textMonnier, Paul. "Locus H19 et contrôle épigénétique du développement embryonnaire." Paris 6, 2013. http://www.theses.fr/2013PA066767.
Full textThe H19 locus produces a 2. 3kb non-coding RNA (ncRNA) as well as a micro RNA, the miR-675. It is located at the distal part of the chromosome 7 in mice close to the Igf2 gene. These genes were among the first genes described to be imprinted. Therefore, this locus served as a paradigm to understand molecular mechanisms that drive genomic imprinting, an epigenetic process that leads to monoallelic expression of genes in a parent-of-origin dependent manner. However, the precise function of the H19 locus still remains unclear. Our laboratory recently showed that H19 is a trans-repressor of nine genes, including Igf2, of an imprinted gene network (IGN) involved in growth control of the embryo. The main purpose of my PhD was to decipher mechanisms through which H19 exerts this control. In collaboration with the group of Wolf Reik, we participated to an in-depth analysis of the miR-675. We found that it was linked to the repression of placental growth through the direct targeting of the Igf1r mRNA that encodes for the receptor through which Igf2 exerts its growth promoting effect. Nevertheless, the miR-675 appears to have no effect on the expression of the IGN, thus leading to the conclusion that the H19 mediated downregulation of 9 genes of this network is achieved by the H19 full-length RNA. We showed that this RNA represses several of these targets through an interaction with the MBD1 protein. This protein is involved in the maintenance of the repressive H3K9me3 histone mark. We found that the H19 RNA is necessary to the recruitment of MBD1 to some of its targets, including the Igf2 gene
Boushaki, Toufik. "Du contrôle passif au contrôle actif : application à l'oxy-combustion dans des brûleurs à jets séparés." Rouen, INSA, 2007. http://www.theses.fr/2007ISAM0007.
Full textLachance, François. "Investigation d'une nouvelle stratégie de contrôle environnemental pour bâtiment avicole." Mémoire, École de technologie supérieure, 2005. http://espace.etsmtl.ca/358/1/LACHANCE_Fran%C3%A7ois.pdf.
Full textKim, Hae Koo. "Modélisation du contrôle environnemental et génétique du tallage chez le sorgho." Montpellier 2, 2008. http://www.theses.fr/2008MON20074.
Full textThis thesis develops a conceptual modelling framework formalizing the environmental (E) and genetic (G) components of tillering control by carbohydrate (C) assimilate availability in sorghum (supply/demand ratio, S/D). This concept was elaborated and tested across five experiments and six contrasting genotypes in terms of tillering ability. The results showed that regulation of tillering was strongly related to its competition with main stem development and leaf morphogenesis, by influencing the appearance frequency of the lower-rank tillers. An indicator of internal competition for C, S/Dindex, was developed and allowed to explain tillering response across the range of G and E investigated. Once confirmed by analysis of sugar distribution within the plant, this indicator was applied (i) to support a genetic study, which identified three quantitative trait loci (QTLs) associated with tillering ability, two of which could be specifically associated with genetic components of S/Dindex (related to leaf width and a S/D threshold for tillering); and (ii) to improve and evaluate an existing plant model (EcoMeristem). Results of this study open new opportunities to investigate the following: (i) G and E bases of the relationship between C dynamics and tillering ability, (ii) the stability of model-based QTLs and (iii) further improvement of EcoMeristem and other models such as APSIM to connect them to genetic information and help develop new sorghum ideotypes
Alawad, Ahmad. "Aptacapteurs électrochimiques pour le contrôle environnemental de la tétracycline et ses dérivés." Thesis, Perpignan, 2019. http://www.theses.fr/2019PERP0028.
Full textIn this work, two electrochemical aptasensors were developed for selective detection of tetracycline (TET) and its derivatives in aquatic environments. The two analytical tools are based on the immobilization of DNA oligonucleotides on screen-printed carbon electrodes: the first is an impedimetric sensor involving an aptamer of 8 nucleotides, while the second is based on a voltammetric sensor based on the inhibition of the intrinsic electroactivity of an aptamer of 76 nucleotides. Since such electroactivity has never been observed previously, a study was conducted to identify the part of the sequence responsible for this activity and to determine in parallel the TET recognition sites. Another part of the work exploits this electroactivity to map the distribution of aptamers immobilized on the electrode by scanning electrochemical microscopy
Papapietro, Olivier. "Dissection génétique et études fonctionnelles du locus de contrôle de l'atopie Aiid3 et du locus contrôle de la toxoplasmose Toxo1, dans le modèle des rats BN et LEW." Toulouse 3, 2009. http://thesesups.ups-tlse.fr/1037/.
Full textMost human immune diseases are multifactorial, resulting from interactions between genetic and environmental factors. Their studies are hampered by genetic heterogeneity of human populations and by the variability of environment. In experimental conditions, using rodent models, environmental and genetic factors are under control. BN and LEW rats represent a powerful model to study immune-mediated diseases since they show strong differences in normal and pathological immune response. We used these strains to study genetic control of toxoplasmosis issue and mercury susceptibility. Linkage analyses in F2 (LEWxBN) rats followed by genetic dissection using reciprocal congenic and sub-congenic lines lead us to identified identified a major locus on chromosome 10 (c10) called Toxo1 in a 1. 09Mb region that direct toxoplasmosis outcome independently of the genetic background. Two major candidate genes have been identified and their implications in congenital toxoplasmosis outcome in human cohorts are under investigation. By a similar strategy, genetic control of heavy metal-mediated immune disorder has been investigated. In the BN rats, mercury salt induced IgE production, auto-antibodies-mediated nephritic syndrome and ANCA-associated vasculatis while the LEW rats are completely resistant to the disease induction. In this work, we show that the Aiid3 locus previously identified by our group control the set of the mercury-induced symptoms. Genetic dissection of the locus leads us to localize the gene(s) of control within a critical 117Kb region. 4 genes are present within this region and 2 are both polymorph and implicated in immune system homeostasis and function and appear as major candidate genes for the Aiid3-mediated biological effect
Istamboulié, Georges. "Biocapteur associant l’acétylcholinestérase et la phosphotriesterase pour un contrôle environnemental des insecticides organophosphorés." Perpignan, 2009. http://www.theses.fr/2009PERP1002.
Full textThis work presents the development of enzymatic sensors for the sensitive and selective determination of two organophosphate (OPs) insecticides pointed out by European Community as priority pollutants of surface waters: chlorpyriphos (CPO) and chlorfenvinphos (CFV) (directive EC 2455/2001/E). The very high sensitivity of the sensors has been achieved by combining the use of a genetically-modified (GM) acetylcholinesterase (AChE) with an oriented immobilisation method based on His-Ni affinity on magnetic beads. The selectivity of the system has been obtained by using phosphotriestérase (PTE), an enzyme isolated from Pseudomonas diminuta, which has the capability of hydrolysing certain OPs. A bi-enzymatic sensor associating AChE and PTE has allowed the selective detection of CPO and CFV in simple solutions. The analysis of OPs mixtures has been then performed by using an artificial neural network incorporating three sensors, two mono-enzymatic (wild AChE or GM-AChE) and one bi-enzymatic (GM-AChE + PTE). This system has allowed the specific detection of the two OPs in a wide range of concentrations. A complementary study has shown that immobilizing PTE into a column integrated in a flow system allows the detoxification of surface waters contaminated by the two studied OPs. Finally, the last part of this work has been devoted to the study of a new potential mediator for thiocholine oxidation : PEDOT-PSS
Boudsocq, Simon. "Contrôle du recyclage des nutriments par les organismes vivants : conséquences sur le fonctionnement des écosystèmes et perspectives évolutives." Paris 6, 2010. http://www.theses.fr/2010PA066617.
Full textDelabroy, Olivier. "Oxydes d'azote et leur contrôle : solutions passive et active." Châtenay-Malabry, Ecole centrale de Paris, 1996. http://www.theses.fr/1996ECAP0494.
Full textToscano, Anna. "Clinical and psychological factors associated with Health-related Quality of Life and treatment choice at cancer diagnosis and over the disease course." Thesis, Nantes, 2018. http://www.theses.fr/2018NANT1034/document.
Full textAdvances in treatment and faster diagnosis have helped improve the survival rate for many cancers. Therefore, the need to find a way to help patients to maintain good psychological health and to increase Health-Related Quality of Life (HRQoL) has become essential. The patients’ beliefs (Locus of Control, LOC) and the coping strategies are psychological variables can have an impact on patients’ HRQoL. The association of changes in HRQoL over time and coping and LOC was assessed in breast cancer and melanoma patients during 2 years post-diagnosis. In order to study if the patients’ beliefs also play a role in treatment decision making, the association between the treatment choice at diagnosis and patients’ beliefs and other medical and psychological variables was assessed. Some LOC sub-dimensions or coping strategies have an association with HRQoL change for breast cancer and melanoma, whereas some of them have an association only with one cancer type. Moreover, HRQoL does not evolve in the same way for both types of cancer. The belief of the control of the doctors on patient’s health was negatively associated with radical treatment choice. It seems that psychological therapies, that consider the patients’ coping strategies and beliefs, should be specific according to the type of cancer and time post-diagnosis. This work has also highlighted the importance of considering the psychological aspects of the doctor-patient relationship in shared medical decision making
Franchini, Don-Marc. "Rôle des séquences signal de recombinaison dans le contrôle des réarrangements au locus TCRβ." Aix-Marseille 2, 2007. http://theses.univ-amu.fr.lama.univ-amu.fr/2007AIX22012.pdf.
Full textV(D)J recombination, the process by which antigen receptor is assembled, is targeted by the recombination signal sequences (RSS) that flank each V, D and J coding segment. This process is largely regulated by chromatin structure. However some mechanisms that operate beyond accessibility exist to fine-tune V(D)J recombination regulation. The first example is the B12/23 restriction that impedes, despite 12/23 compatibility, the direct rearrangement between Vβ and Jβ gene segments; therefore the B12/23 insures the Dβ segment incorporation. The aim of my thesis was to understand the impact of RSS on VDJ recombination efficiency and specificity. I focused my study on TCRβ RSS and to get free from chromatin, I developed an in vitro cleavage assay system. I defined the mechanistic basis of the B12/23 restriction, but also I uncovered a major role for the 23-RSS Dβ1. Indeed, this RSS dictates a rearrangement order at the TCRβ locus. Finally my results point out that a factor expressed in immature DN T-cells, stimulate RAG cleavage activity. This factor is not yet characterized; it might be involved in the cellular specificity of the rearrangement and allelic exclusion at the TCRβ locus. To conclude, my thesis contributes to the understanding of these various mechanisms that regulates, beyond accessibility, the V(D)J recombination
Terrade, Vanessa de Fátima. "Les sols pollués : Leur remise en état au service de la justice environnementale." Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCD069/document.
Full textNos Estados Democráticos de Direito, as políticas públicas reconhecem um dever estatal de promover uma sociedade igualitária; sem pobreza, reduzindo, gradativamente, asdesigualdades sociais existentes e protegendo o meio ambiente. No entanto, em muitos países, como no Brasil, a aplicação dessas políticas não é realmente efetiva, principalmente no que concerne ao respeito ao direito fundamental a uma moradia livre de riscos à saude. O que sevê no dia a dia, são inúmeras familias morando sobre áreas contaminadas ou, simplesmente, sofrendo consequências nefastas ao seu direito ao meio ambiente sadio, por serem vizinhas de grandes indústrias, em uma violação clara aos princípios preliminares proclamados por esses Estados de Direito. Diante disso, o objetivo principal desse trabalho é o de compreender aimportância da gestão dos solos poluídos, a partir da adoção da política de sua reabilitação. Quanto mais desenvolvida for à legislação sobre a reabilitação das áreas poluídas, quanto melhor for o mecanismo de controle das áreas poluídas ou pontencialmente poluidas, menorserá o risco de que a população venha a viver nessas áreas, ou aos arredores delas, o que consequentemente, favorecerá a promoção de um meio ambiente sadio para todos, favorecendo o surgimento de uma sociedade pautada nos princípios da justiça ambiental.Como metodologia, utilizaremos a abordagem do direito comparado, a fim de demonstrar aevolução do direito fundamental ao meio ambiente na França e no Brasil e estudar alguns casos de poluição dos solos nos dois países. Esta escolha se baseia no fato da França, país industrializado, possuir já, uma certa, tradição no controle das áreas poluídas ou potencialmente poluídas. Ao contrário do Brasil, país em desenvolvimento, que está aind atentando implantar mecanismo para o conhecimento dos seus solos e para a implantação deum sistema de inventário. Dessa forma poder-se-á compreender a importância da legislação ambiental e dos mecanismos de controle da administração pública, para realmente assegurar o respeito ao direito fundamental ao meio ambiente para a população de cada um desses países. Adicionalmente, passamos a avaliar o aspecto sócioeconômico dos casos brasileiros, a fim de compreender a relação entre a poluição dos solos e a injustiça ambiental neste país. Concluíndo, que de um ponto de vista jurídico, não existe, ainda, uma relação entre a poluiçãodos solos ocasionada pela atividade industrial e as desigualdades sociais presentes em umpaís
Ibanez-Hafkamp, Lisette. "La labellisation écologique." Toulouse 1, 1998. http://www.theses.fr/1998TOU10005.
Full textThe main purpose of this thesis is to answer to two questions. First, we want to explain why consumers are willing to pay a higher price for goods that are protecting the environment and how we can model this observed human conduct. Second, we look at the signaling problem producers are facing in environmental markets and we study what labelling strategy firms adopt in different market structures. In the first chapiter we give an overview of the four main topics that cover the study of environmental labelling economics which are in brief the economics of altruism, the environmental economics, the differentiation of products, and the signaling theory. We conclude that environmental-friendly products can be marketed thanks to, on the one hand, a non-egoistic conduct and, on the other hand, an efficient information transmission. In the second chapter we study the environmental markets under perfect information, i. E. When consumers observe perfectly the environmental quality before purchase. We find that there are situations where the monopolistic market structure is socially prefered to any other competitive market structure. But when buyers only can rely on the green label sticked on the product, it is possible that environmental friendly products disappear. In the third chapter, we study the labelling strategy of a monopolistic producer who is either producing one type of product or two different types and can use a green label to signal his high environmental quality to uninformed consumers against a fixed sunk cost. We determine the possible perfect bayesian equilibria. In the last chapter we introduce the competition aspect in the asymetric-information model and show that, considering the labelling cost, low polluting firms prefer or do not prefer to label their products. At the equilibrium, the low-polluter will never want to imitate the high-polluter. But a "label-profusion" conduct seems to be conceivable
Casabianca, Anne. "Recyclage et contrôle de la pollution : Une analyse économique avec application aux déchets du Bâtiment." Corte, 2004. http://www.theses.fr/2004CORT1031.
Full textWe propose in this research an economic analysis of the waste management in the Building Industry. For this purpose, we utilise four stages. The first chapter examines all the particular characteristics of to the organizational structure of the Building Industry. Contrary to the existing literature, and to take into account the recycling, we present a vision widened by the industry based on the cycle of life of the building. That is why we insist on an important point : the distinction between the activities of manufactoring of the materials and the the acte to build. In the second chapter, we draw up, first of all, an inventory of fixtures concerning the production and the management of the waste. Then, we would try to identify the economic, technological and statutory constraints which meet firms in the management of the waste. In the third chapter, our objective is to put the theoretical ranging-poles allowing to study the recycling of the waste. Two big economic fields of the literature seems to have been interseted in this problem. Certain mondels show that the implementation of a technology of recycling establishes an effective means of conservation of natural resources, the recycled resources being substitued for natural ressources. Others show that the implementation of a technology of recycling allows to reduce the environmental damage and establishes a means of more respectful treatment of the environment. In the fourth chapter, we shall propose a dynamic partial equilibrium model, based on the optimal control theory, allowing to draw that could be the environmental policy to be put opens it with the aim of regulating the treatment of the waste in the Building Industry
Ossavu, Wisi Yonni. "Réduction de l'impact environnemental des rejets de papier en imprimerie par l'ajout d'additifs de contrôle du peluchage." Thèse, Université du Québec à Trois-Rivières, 2010. http://depot-e.uqtr.ca/1904/1/030135254.pdf.
Full textDesmet, Cloé. "Systèmes de détection multiparamétrique de marqueurs biologiques ou de polluants, appliqués au diagnostic et au contrôle environnemental." Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10149/document.
Full textThe work reported in this thesis focuses on the development of new multiplex analytical devices on biochip or electrode microarray format, dedicated to diagnosis and environmental monitoring. The objective of the first research axis is diagnosis, thanks to the detection in patients’ serum of a panel of antibodies, biomarkers of a pathological state. For that purpose, two immunotests have been developed, enabling the multiparametric detection of specific antibodies by automated and high-throughput analysis of serum samples. This approach is based on the antibodies capture by antigens probes immobilized in a matrix of spots on a membrane surface composing the wells bottom of a micro-titer plate. Enzyme-labeled antibodies have been used, providing a colorimetric detection. This device enabled the achievement of the analysis of 96 samples in less than three hours and has been applied to different applications. The first one consists of allergy diagnosis, and the second focuses on cancer diagnosis. The second part of this work is applied to environmental monitoring, through water analysis. Different types of pollutants have been defined as targets: pesticides, toxins and explosives. In order to integrate them in a matrix of probes, different conjugates have been synthesized with these haptens. After screening and optimization of the conjugates through their reactivity and cross-reactivity with the specific antibodies, the developed device demonstrated his analytical performances in terms of sensitivity and selectivity. Finally, for the European Project BONAS, a last sensor based on water analysis has also been developed. This electrochemical microarray aims to detect explosives precursors, used in improvised explosive devices, for the localization of hidden bomb factory. The chip was designed as a screen-printed electrode network, which was modified by different metals electrodeposition
Renaud, Angèle. "Le système de management environnemental comme moyen de contrôle de la déclinaison et de l'émergence des stratégies environnementales." Phd thesis, Université de Poitiers, 2009. http://tel.archives-ouvertes.fr/tel-00476200.
Full textJassionnesse, Lionel. "Contrôle optimal et métriques de Clairaut-Liouville avec applications." Thesis, Dijon, 2014. http://www.theses.fr/2014DIJOS047/document.
Full textThe work of this thesis is about the study of the conjugate and cut loci of 2D riemannian or almost-riemannian metrics. We take the point of view of optimal control to apply the Pontryagin Maximum Principle in the purpose of characterize the extremals of the problem considered.We use geometric, numerical and integrability methods to study some Liouville and Clairaut-Liouville metrics on the sphere. In the degenerate case of revolution, the study of the ellipsoid uses geometric methods to fix the cut locus and the nature of the conjugate locus in the oblate and prolate cases. In the general case, extremals will have two distinct type of comportment which correspond to those observed in the revolution case, and are separated by those which pass by umbilical points. The numerical methods are used to find quickly the Jacobi's Last Geometric Statement : the cut locus is a segment and the conjugate locus has exactly four cusps.The study of an almost-riemannian metric comes from a quantum control problem in which the aim is to transfer in a minimal time the state of one spin through an Ising chain of three spins. After reduction, we obtain a metric with a second first integral so it can be written in the Liouville normal form, which leads us to the equations of geodesics. Outside the particular case of Grushin, of which the caustic is described, we use numerical methods to study the conjugate locus and the cut locus in the general case
Mahjoubi, Habib. "Nouvelle stratégie d'amélioration de la productivité végétale en condition de stress environnemental via un meilleur contrôle du cycle cellulaire." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAJ059/document.
Full textSalt stress is one of the main environmental factors limiting plant growth and yield in cereal crops. It is therefore imperative to develop varieties more tolerant to salt stress in order to increase yield and ensure food security. The signaling pathway linking salt stress perception to cellular response was addressed here by studying RSS1-like proteins in plants. RSS1 (Rice Salt Sensitive 1) protein plays an important role in salt stress tolerance. It acts at the interface of stress perception and developmental control and division in meristems. During this work, the RSS1 counterpart named TdRL1 (Triticum durum RSS-Like 1) was isolated from the durum wheat Tunisian variety "Oum Rabiaa". We have demonstrated that TdRL1 carries the conserved D and DEN-Box motifs involved in the post-translational regulation of the protein. In addition, we show that TdRL1 is the functional homologue of RSS1 since it was able to complement the loss-of-function mutant rss1, hypersensitive to salt stress. In addition, heterologous expression of TdRL1 enhances salt stress tolerance in yeast and in Arabidopsis by increasing germination and reducing the accumulation of reactive oxygen species. Our cytological studies have shown that the TdRL1 protein is cytoplasmic in interphase and is localized at the spindle during mitosis. Remarkably, TdRL1 changes its subcellular localization under salt stress treatment and shows a partial accumulation in the nucleus, highlighting the multifunctional nature of this protein during salt stress response. Our data suggest that under salt stress, TdRL1 plays a role in the regulation of the cell cycle in relation with the microtubule network. Pursuing the study of RSS1-like multifunctional proteins will open up new research areas for the creation of wheat varieties that are more resilient to environmental stresses
Badolo, Leopold Bawala. "Estime de soi, locus de contrôle et performances scolaires chez des élèves burkinabé de CM2 et de 3ème." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM3110/document.
Full textThe Burkina Faso faces the recurrence of poor academic performance, which is a serious threat to economic and social development. The explanations we give to this observation involve economic factors, political, social, educational, geographical. Very little attention is paid to psychology. But scholarly research is sufficiently instructive today on the seminal role of psychological factor in shaping human behavior in general, in the school conducted in a specific way. Among the psychological factors whose role is emphasized in the literature, there is the self-esteem and locus of control. This research will examine the links between these psychological variables and performance among learners in the beginning and the end of adolescence, in the socio-economic-cultural context of Burkina Faso. Using questionnaires of self-esteem and locus of control questionnaires, we conducted a series of three studies on a sample of six hundred and eighty six male and female students of CM2 and third. School performance was measured from notes in class Assessment situation and in a situation of independent evaluation. Data collected and analyzed highlight links, overall, modest between self-esteem and school performance between locus of control and academic performance throughout the three studies
Milon, Bernard. "Locus de contrôle, estime de soi et statégies de coping en situation de chômage : une ou des externalités?" Montpellier 3, 2000. http://www.theses.fr/2000MON30017.
Full textBraikia, Fatima-Zohra. "Analyse de la fonction de la région de contrôle du locus des chaînes lourdes des immunoglobulines au cours du développement des lymphocytes B." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30121.
Full textDuring B cell development, the immunoglobulin heavy chain (IgH) locus undergoes two types of intragenic rearrangements: 1) V(D)J recombination at early stages of B cell development which targets the variable region of the locus, and 2) class switch recombination at the mature B cell stage which enables B cells to acquire novel effector functions upon a change of the constant domain of Ig molecules. Both processes contribute to the wide diversity of antibody repertoire, and to the specificity and robustness of an immune response. Transcription of recombining genes is associated with V(D)J recombination and classswitching. This transcription, called germline transcription, plays a key role in the accessibility of the chromatin of target sequences to the enzymes required for the initiation of recombination. Germline transcription is regulated by cis-acting elements that often act at long distances within the locus. Among these long-range elements, a locus control region called the 3' regulatory region (3'RR) is known to play a major role in IgH locus expression at late stages of B cell development. However, its role at early stages is unknown.The main objective of my PhD work was to contribute to a better understanding of the function of the 3'RR throughout B cell development, with a special focus on early stages. In a first study, we analyzed the role of the 3'RR in the regulation of germline transcription associated with V(D)J recombination by using a mouse line devoid of the 3'RR. We first set up a sensitive real-time PCR to quantify V(D)J recombination. We then went on to show that in fact, the 3'RR mediated a transcriptional silencing activity on both sense and antisense transcription along the variable region of the IgH locus, and that the switch off of this silencing activity correlated with the completion of V(D)J recombination, after which the 3'RR became a transcriptional enhancer. In a second study, we investigated the effect of the 3'RR on germline promoters of the constant genes by using two murine models bearing specific mutations at strategic sites of the IgH locus. Phenotypic and molecular analyses of the two models enabled us to show that the 3'RR establishes a transcriptionally active domain at early stages of B cell development, upon completion of V(D)J recombination. Nonetheless, the activating effect of the 3'RR on constant genes at early stages is insulated by the architectural factor CTCF. Deletion of this CTCFbinding site or insertion of a germline promoter within the 3'RR-mediated transcriptionally active domain, led to specific and premature activation of target germline promoters. My PhD work enabled us to elucidate for the first time the developmentally regulated function of the 3'RR at early stages of B cell development, prior to antigen challenge. It also revealed a more complex picture of the 3'RR function than the hitherto simple induction of the 3'RR upon encounter with antigen
Belujon, Pauline. "Régulation de l'activité électrique du locus coeruleus et son implication dans la physiologie et la physiopathologie du contrôle moteur." Bordeaux 2, 2005. http://www.theses.fr/2005BOR21287.
Full textThe focus of this study is the main noradrenergic nucleus in the brain, the locus coeruleus (LC) which has a number of well-established physiological roles as well as being a possible cause of several pathologies. In particular, properties of GABAergic synaptic input to the LC were investigated. LC neurons express a specific set of GABA receptor subunits : α3, together with the rare subunits (epsilon) and (thêta). The pharmacology of the GABA A receptors in the LC was established and their kinetic properties described. The possible role of noradrenergic efferents from theLC in basal ganglia function was also investigated, including the action of noradrenergic agents in vivo. A positive effect of an α2 antagonist, idazoxan, on spontaneous voluntary movements which is accomlpanied by a reduction in the firing frequency of a crucial nucleus in basal ganglia function, the subthalamic nucleus (STN), was found
Lafontaine, Jean-Philippe. "Adoption et assimilation des outils de gestion : le cas des outils de contrôle de gestion environnemental dans les organismes certifiés ISO 14001." Poitiers, 2005. http://www.theses.fr/2005POIT4004.
Full textThis thesis concerns the environmental performance by firms. An empirical study was carried out among ISO 14001 certified firms. We identify four important points. ISO 14001 norms help firms to implement a strategy and an organization adapted to a context concerned by environment, and firms are forced to adopt environmental management control tools like green performance indicators and environmental budgets (1). The assimilation of these tools can generate differences in perception between players and there are less problems concerning green performance indicators than about environmental budgets (2). Environmental performance is carried out by environmental managers (3). It is necessary that accounting, control and audit professions move to give an account of environmental management performance to firms managers (4)
Prato, Victor. "Effets de la pratique cooperative sur le "locus of control" et l'estime de sol etude d'une population d'artisanes rurales au venezuela." Toulouse 2, 1994. http://www.theses.fr/1994TOU20083.
Full textIn this study we examine the effects of cooperative practice on locus of control and self-steem. The study is based on a sample of 146 crafstwomen in venezuela : 79 women were members of a cooperative association and 67 were not. A correlation analysis shows signifiant differences in locus of control and self-steem between cooperative members and non-members. Members were found to be more internal and have higher self-steem than non-members
Glaisner, Johan. "Dynamiques d'innovation dans les PME moyenne et basse technologie : exploration par le locus de contrôle des dirigeants et la capacité d'expérimentation." Rennes 1, 2011. http://www.theses.fr/2011REN1G020.
Full textThis research focus on the LMT SMEs. We developed a heuristic framework linking the manager’s locus of control, experimentation capacity and company performance. A survey conducted on West of France industrial SMEs returned 98 exploitable questionnaires. The analysis of the data allowed the construction of two typologies. The first one, founded on the locus of control highlighted three groups of individuals: the externals, the unspecified and the internals. The identification of an intermediary class, the unspecified, is an important contribution. The unspecified profile is not closely associated with variables describing the capacity for experimentation and performance. This highlights that only the individuals with a strong determined locus of control affect (positively for internals and negatively for externals) experimentation capacity and company performance. The second typology founded on the experimentation capacity also reveals three groups : the isolated, the relational actors and the experimenters. No significant association exists between the isolated group, who do not experiment and the organisation’s performance. The relational actors develop collaborative activities but in the absence of an internal development dynamic of competences, the results are judged as being not as good as those of competitors. The experimenters associate collaborative work, the development of competences and the in-house formalisation of knowledge. They obtain greater technological specificity. The acknowledgement of an association between profiles suggests that the experimentation capacity plays a mediatory role between the locus of control and the performance of SMEs
Boulard, Olivier. "Contrôle génétique de l'auto-immunité chez la souris Nonobese Diabetic (NOD). Les locus IDD5 et IDD 16 de susceptibilité au diabète." Paris 5, 2002. http://www.theses.fr/2002PA05N119.
Full textNonobese diabetic (NOD) mice is a reference strain for autoimmue diabetes. We have analized more precisely one of the susceptibility loci, Idd5 on chromosome 1. This locus is of special interest because the corresponding genetic region include candidate genes like Ctla4 or Icos. Moreover, the human synteny on chromosome 2q is also a susceptibility region for human diabetes (IDDM 12 locus) and include CTLA4. The Idd5 locus has been investigated using congenic recombinant strains of mice. We have also characterized the genetic control of autoimmune phenotypes associated to NOD mice diabetes, like the inducible thyroi͏̈ditis of chronic evolution and spontaneous infiltration of salivary glands
Gherardi, Hein Paulo Ricardo. "Contrôle génétique et environnemental de l'angle des microfibrilles dans le bois d'Eucalyptus : effets sur les propriétés du bois et implication pour la sélection." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2011. http://tel.archives-ouvertes.fr/tel-00623042.
Full textMasson, Stéphane. "Contrôle environnemental de l'hétérogénéité spatiale de la biomasse et de la structure en taille des communautés planctoniques aux échelles intra- et inter-lacs." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0019/NQ47629.pdf.
Full textIfrim, George Adrian. "Commande de procédés d'intérêt environnemental : traitement biologique des eaux usées et production de micro-algues en photobioréacteur." Nantes, 2012. http://archive.bu.univ-nantes.fr/pollux/show.action?id=9cf9407e-55ba-4151-8eb6-69f95efc89ea.
Full textEbrahimi, Asa. "Contrôle génétique de la qualité des graines chez le tournesol (Helianthus annuus L. ) soumis à la sécheresse." Phd thesis, Toulouse, INPT, 2008. http://oatao.univ-toulouse.fr/7782/1/ebrahimi.pdf.
Full textPadilla-Bautista, Joaquin Alberto, Rolando Díaz-Loving, Isabel Reyes-Lagunes, Christian Enrique Cruz-Torres, and Nélida Padilla-Gámez. "Locus of control in mate choice: Etno-Psychometric validation." Pontificia Universidad Católica del Perú, 2017. http://repositorio.pucp.edu.pe/index/handle/123456789/123828.
Full textEn la actualidad pareciera que cada individuo es responsable de la elección de pareja, sin embargo, históricamente ha sido regulado por la cultura, familia y sociedad, quienes marcan las reglas, normas y conductas adecuadas para dicha elección. Esta investigación tuvo como propósito la construcción de una escala que analiza si una persona se considera a sí misma como responsable de la elección de su pareja; para ello se cuestiona la globalidad del proceso de locus de control. Un primer estudio, cualitativo, obtuvo indicadores usando ATLAS.ti, para obtener factores teóricos. Un segundo estudio corroboró los factores teóricos mediante un análisis de componentes principales, mostrando la existencia de los factores de: DestinoPredestinación, Poderosos del Microcosmos, y Control Interno, explicando con sus 17 ítems el 50.94% de varianza. Se concluye que el locus de control en la elección de pareja no es un continuo que se mueva entre internalidad y externalidad, sino que es multidimensional.
Actuellement, il semble que chaque individu est responsable du choix d’un couple, mais, historiquement, il a été réglementé par la culture, la famille et la société, qui marquent les règles, les normes et les comportements appropriés pour cette élection. Le but de cette recherche était la construction d’une échelle qui analyse si une personne se considère comme responsable du choix de son partenaire; pour cela, la globalité du processus de locus de contrôle est mise en question. Une première étude qualitative a obtenu des indicateurs en utilisant ATLAS.ti, pour obtenir des facteurs théoriques. Une deuxième étude a corroboré les facteurs théoriques au moyen d’une analyse des composantes principales, montrant l’existence des facteurs: Fate-Pré- destination, Microcosme Puissant et Contrôle Interne, expliquant avec leurs 17 items les 50.94% de variance. Nous concluons que le locus de contrôle dans le choix du couple n’est pas un continuum qui se déplace entre l’internalité et l’externalité, mais qu’il est multidimensionnel.
Hoje, parece que cada indivíduo é responsável pela escolha de seu parceiro, no entanto, tem sido historicamente regulado pela cultura, família e sociedade, que estabelecem regras, normas e comportamentos adequados a essa escolha. Esta pesquisa teve como objetivo construir uma escala que analise se uma pessoa se considera responsável pela escolha de seu parceiro; para isso, a globalidade do processo de locus de controle é questionada. Um primeiro estudo qualitativo, obteve indicadores usando ATLAS.ti, para obter fatores teóricos. Um segundo estudo corroborou os fatores teóricos através de uma análise de componentes principais, mostrando a existência dos fatores de Destinação-Predestinação, Poderosa do Microcosmo e Controle Interno, explicando com seus 17 itens 50.94% de variância. Concluímos que o locus de controle na escolha do par não é um continuum que se move entre internidade e externalidade, mas é multidimensional.
Machefaux, Erwan. "L'obligation d'information dans les cessions de contrôle." Thesis, Paris 1, 2020. http://www.theses.fr/2020PA01D042.
Full textTransfers of control are a particular type of share transfer, with their own legal framework, as they form, at the same time, the main means of transferring companies. As such, they are a major economic challenge; difficult to control since the company itself is a complex construct. Moreover, there is an important imbalance of knowledge in relation to the transferred company between the parties. Also, very frequently, transfers of control disputes arise from an event occurring after the transfer, but which originates during the period of management by the transferor. The transferee is therefore disappointed by the devaluation of the shares and has to deal with the adverse consequences following its acquisition of the company. In the first instance, the main recourses available to the disappointed transferee allowing notably the sanction of the violation of the transferor’s duty to inform are examined within the legal framework. This includes notably the defects in consent (mistake and fraud), the guarantees related to the sale (the guarantee against latent defects and the guarantee against dispossession), as well as the duty to inform formalized by the reform of French contract law dated 10 February 2016. In the second instance, the main agreements which formalize the operation and allow the parties to deal contractually with such duty to inform are analyzed. This comprises notably the liability guarantee, price adjustment clauses and due diligence. The recourse to professional experts and the reliability of information provided are also examined. This analysis through the spectrum of the duty to inform sheds an updated light on transfers of control. It contains the tools to assess the chances of success of the different recourses available and the implementation of a global legal strategy
Anzala, Fabiola Johana. "Contrôle de la vitesse de germination chez le maïs (Zea mays) : étude de la voie de biosynthèse des acides aminés issus de l'aspartate et recherche de QTLs." Angers, 2006. http://www.theses.fr/2006ANGE0043.
Full textThe aspartate pathway was studied through the expression of the genes ask1, ask2 akh1 and akh2 coding for aspartate kinase by qt-RT-PCR, the amino acids content by HPLC and the degradation of asp-15N in the derived amino acids followed by labelling of 15N. It appears that the aspartate pathway differs between two (slow and fast) genotypes of maize: slow germination would be associated with an inhibiting effect of the accumulation of lysine or to limited contents of threonine and methionine. The study of the inhibitory effect of lysine by QTLs (T50) in the presence of amino acids highlights a QTL specific to germination in the presence of lysine, which coincides with a QTL specific to germination in condition of "cold" stress. The results indicate that lysine content would be partly responsible for the speed of germination
Doitteau, Gaelle. "De l'organisation du vivant aux assemblages fossiles : comparaison des communautés de bivalves modernes et anciennes." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4747/document.
Full textThe thesis explores how the properties of biodiversity are preserved in the sedimentary archives. Discussions are supported by the analysis of the modern tropical fauna of the Touho Lagoon (New Caledonia), collected during the Montrouzier expedition in 1993. The differences between live bivalve assemblages and dead shell assemblages are quantified with various indices (taxonomic richness, PIE index of evenness, rarefaction curves, fidelity indices) and classification tools (Cluster analyses, NMDS).Environmental parameters, such as the type of substrate or the water-depth, are responsible for variations among live species associations. The composition of dead shell assemblages differs from the living communities but environmental informations arepreserved. Generally, the dead shell assemblages are more diversified than live fauna of the same sites because of the accumulation of rare species. The higher diversity of dead shell assemblages can be explained by 1) the preservation of autochthonous bivalve shells, 2) the input of allochthonous shells and 3) the time-averaging. The fidelity of dead shell assemblages to the biological communities varies according to the environmental conditions. For example, dead shell assemblages found on hard substrate environments may be very different from the living communities. Allochthonous species tend to accumulate in deep outer shelf environments... Salinity, substrate or water-depth are main perturbation factors, as they imply loss or gain of taxa.The preservation of living communities varies according to the biological caracteristics, such as ecology, population structure or shells mineralogy
Lê, Laetitia Minh Mai. "Exploitation des données spectrales dans la sécurisation du circuit des médicaments anticancéreux." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112148/document.
Full textMost of the anticancer drugs are defined by a narrow therapeutic margin; therefore medical errors can have major consequences on patients. Thus, it’s necessary to guarantee the good drug at the good dose by the implementation of a quality control of the preparation before administration. These potentially carcinogenic, mutagenic or teratogenic drugs present a risk for exposed people especially healthcare workers.The aim of this study was to develop tools which can optimize the safety of the cytotoxic medication circuit in hospitals, for the patient as much as for healthcare workers. In order to respond to these problematics, analytical tools have been associated with different methods of data interpretation of chemometric and risk management.To improve healthcare workers’ safety, environmental monitoring looking for traces of platinum compound cytotoxic drugs were performed to identify the most contaminated areas. Based on these contaminations and working conditions, a methodology of multi-criteria risk analysis has been developed to quantify the risk of exposure of healthcare workers. Regarding the risk, various corrective measures were considered. Thus, studies based on the detergent efficiency of decontamination protocols used to clean workplace surfaces and cytotoxic vials were conducted.In parallel, assays were performed on two anticancer molecules to secure cytotoxic preparations before administration: 5-fluorouracile and gemcitabine. Regarding their non-destructive, non-invasive properties and therefore, more secured handling, Raman and near infrared spectroscopy were explored. Spectral data (spectral zones and pretreatments) were optimized by multivariate analyses ComDim to develop models of regression PLS predicting the concentration of the active ingredient in solution. Results showed the feasibility and the complementarity of these two spectroscopies in the quantitative determination of the cytotoxic drugs.These works participate in the continuous approach of quality assurance implemented in numerous health institutions. We hope that they will contribute to durably decrease risks associated to cytotoxic drugs for both patients and healthcare workers
Flores, Berrios Ericka Patricia. "Contrôle génétique de la régénération in vitro chez le tournesol (Helianthus annuus L. ) et identification des régions chromosomiqus impliquées." Toulouse, INPT, 1999. http://www.theses.fr/1999INPT014A.
Full textLours, Corinne. "Contrôle de l'identité cellulaire par les régulateurs transcriptionnels à domaine BTB/POZ Bric à brac 1 et Bric à brac 2 chez Drosophila melanogaster." Clermont-Ferrand 1, 2003. http://www.theses.fr/2003CLF1MM07.
Full textBouvier, Gaëlle. "Contrôle des recombinaisons V(D)J et de l'expression du locus TCR (Béta) : rôle de l'enhancer E(Béta) : analyse par transgénèse et recombinaison homologue." Aix-Marseille 2, 1996. http://www.theses.fr/1996AIX22085.
Full textWarin, Renaud. "Mise en évidence d'une activité silencer du LCR de la globine β et caractérisation d'une nouvelle activité anti-silencing du site hypersensible HS4." Amiens, 2003. http://www.theses.fr/2003AMIED004.
Full textThe β-globin locus is a widely-used model for transcriptional regulation studies. In this PhD report, we describe new regulatory activities that lies within the human Locus Control Region (LCR) using Recombinase Mediated Cassette Exchange (RMCE), a method to perform site-specific chromosomal integration. The studies of expression patterns of cassettes containing several combinations of the DNAseI hypersensible sites HS reveal that a new chromatin-dependant silencer activity lies within sites HS2 and HS3, and that HS4 is able to slow down silencing. Establishment of interactions between the LCR and sequences close to the integration site are necessary for those activities to occur. We propose a novel model to explain transgene silencing, and we discuss the potential applications for transgenes design and regulation of the β-globin genes during development
Parrocchetti, Jean-Pierre. "Stress, coping et traits de personnalité (névrosisme et lieu de contrôle) chez des sauveteurs et des conseillers du Pôle Emploi." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM3058/document.
Full textPurpose: This study aims at comparing professional rescuers and ordinary people, the way they react and they adjust to stress on different levels (perceived stress, neuroticism intensity, coping strategies, locus of control and posttraumatic stress disorder severity level ) in order to highlight the differences, the similarities and the links between the variables. The following hypothesis has been expressed: both groups (rescuers and job councellors) are different regarding perceived stress, neuroticism intensity, locus of control, the type of coping and the postttraumatic stress disorder severity level. Method: Population: 42 male individuals aged 24 to 55 (survey group: sea and moutain firefighters, High Mountain Squad gendarmes, bomb disposal experts, helicopter pilots and mechanics) and 42 individuals (33 women and 9 men) aged 24 to 59 (control group: job councellors) Tools: 5 scales have been filled in : PSS (perceived stress), EPI (neuroticism – extraversion / introversion), the Levenson scale (locus of control), WCC (coping) and QSPT (posttraumatic stress disorder). Results: the results bring to light that the rescuers show a lower level of perceived stress, of neuroticism, of external (P and C) and internal LOC, of emotional coping, of social support searching and of PTSD severity level than the job councellors. However, both groups do not differ significantly regarding the problem-focused coping. Conclusion: the harmful influence of environmental factors on the personality seems to determine the adjustment to stress and its traumatic consequences
Gilbert, Stéphane. "Expression différentielle du locus multigénique de l'alpha-foetoprotéine et contrôle transcriptionnel du virus de l'hépatite B par le facteur de transcription Fetoprotein Transcription Factor, FTF." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0017/NQ56832.pdf.
Full textVanotti, Meddy. "Développement d'un système de détection en milieux gazeux d'espèces à risque pour le contrôle environnemental (application au monoxyde de carbone et à l'hydrogène) : Composants et systèmes micro-acoustiques." Thesis, Besançon, 2015. http://www.theses.fr/2015BESA2022/document.
Full textThe detection of hazardous gas is a topical issue for the protection of persons. Besides, it represents a challenge linked to the storage of renewable energy. Simulation tools developed within the Time and Frequency Department attached to the FEMTO-ST Institute together with technological facilities available at MIMENTO center have enabled the development of SAW sensors providing answers to these issues. These Love wave’sbased sensors properties have enabled the detection of carbon monoxide in the ppm range. Similarly, hydrogen concentrations of the percent order has been measured by mean of Rayleigh wave’s based sensors. The efforts to optimize electro-acoustic devices have led to achieve delay lines built on quartz with insertion losses of 16 dB.Usually around 25 dB to 30 dB, the reduction of the insertion losses improves the potential of these sensorsin terms of autonomy and surface functionalization. Knowledge of the physical phenomena governing theoperation of these sensors represent the basis of their future development. Thus, different characterization and analysis techniques available in our institute have been carried out to reveal these phenomena. From there, the functionalization of sensor’s sensitives surfaces with metallic alloys and implementation of a chip separation method limiting the disturbance of the direct signal of the electro-acoustic devices, have been explored to improve the performance of the sensors. Based on the experimental results obtained in this thesis, the potential of elastic guided wave’s sensors applied to the detection of chemical quantities in gas phase can be established.In continuation of this study, two projects (P-AIR and SMARTY) dedicated to the control of the urban air quality have already been engaged
Giry, Isabelle. "Contrôle sanitaire des eaux du Bassin d'Arcachon : impact de la fréquentation touristique sur la qualité bactériologique des eaux de baignade." Bordeaux 2, 1995. http://www.theses.fr/1995BOR2P016.
Full textBlanchet, Danick. "Analyse des facteurs de l'anxiété vécue chez les étudiants québécois au niveau collégial." Thèse, Université de Sherbrooke, 2011. http://savoirs.usherbrooke.ca/handle/11143/2836.
Full textFitton, Stéphanie. "Le rôle explicatif des variables d'attitude et de personnalité dans les intentions de départ : Le cas des managers français." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0843/document.
Full textThe many turnover models that can be found in the literature on human resources management illustrate the importance of human resources teams to consider this topic. The objective of this research is to study the organizational and individual factors that influence the intention of French managers to quit from the private sector. This involves analyzing the effects of organizational variables such as perceived organizational support, career satisfaction, work-family conflict, hierarchical plateauing, and two personality variables, locus of control and career anchors on the intentions of departure.To answer these research questions, a questionnaire survey was conducted in September 2015 with French managers from different companies. The sample is composed of 305 respondents.The results show the preponderant role of perceived organizational support, whose effects on intention to quit are moderated by the locus of control. Thus, it appears that the most internal managers, if they feel supported by their employer, are more likely to be satisfied with their careers and have less than the most external role conflicts between their family and professional lives or still have a hierarchical plateauing. On the other hand, our results show that if they have a negative perception of their employer's support, they develop more intentions than external profiles to quit.Socio-demographic variables such as length of service, length of service, age or earnings contribute to explaining the intention to leave the company