Cette thèse est consacrée à la restauration et l'estimation des paramètres par filtrage dans les modèles de chaîne de Markov cachée classique, couple et triplet à sauts Markoviens. Nous proposons deux nouvelles méthodes d'approximation dans le cas des systèmes linéaires gaussiens à sauts Markoviens. La première est fondée sur l'utilisation des chaînes de Markov cachées par du bruit à mémoire longue, on obtient alors une méthode " partiellement non supervisée" dans la quelle certains paramètres, peuvent être estimés en utilisant une version adaptative de l'algorithme EM ou ICE, les résultats obtenus sont encourageant et comparables avec les méthodes classiquement utilisées du type (Kalman/Particulaire). La deuxième exploite l'idée de ne garder à chaque instant que les trajectoires les plus probables; là aussi, on obtient une méthode très rapide donnant des résultats très intéressants. Nous proposons par la suite deux familles de modèles à sauts qui sont originaux. la première est très générale où le processus couple composé du processus d'intérêt et celui des observations conditionnellement aux sauts, est une chaîne de Markov cachée, et nous proposons une extension du filtrage particulaire à cette famille. La deuxième, est une sous famille de la première où le couple composé de la chaîne des sauts et le processus d'observations est Markovien dans ce dernier cas le filtrage optimal exact est possible avec une complexité linéaire dans le temps. L'utilisation de la deuxième famille en tant qu'approximation de la première est alors étudiée et les résultats exposés dans ce mémoire semblent très encourageants / This thesis is devoted to the restoration problem and the parameter estimation by filtering in the traditional hidden Markov chain model, couple and triplet with Markovian jumps. We propose two new approximate methods in the case of Gaussian linear systems with Markovian jumps. first is founded to use the hidden Markov chains by noise with long memory, we obtains a method " partially not supervised" some parameters, can be estimated by using an adaptive version of EM or ICE algorithm, the results obtained are encouraging and comparable with the methods used classically (Kalman/Particle). The second one exploits idea to keep at every moment only the most probable trajectories; we obtains a very fast method giving very interesting results. Then we propose two families of models to jumps which are original. The first one is very general where the process couples made up of the hidden and the observations process conditionally to the jumps, are a hidden Markov chain, and we propose an extension of particulate filtering to this family. The second is under family of the first, where the couple made up of the jumps and the observations process is Markovian, in this last case exact optimal filtering is possible with a linear complexity in time. Using of the second family to approach the first one is studied and the results exposed in this memory seem very encouraging

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Family life is organized by rules, and most of them are unspokenly agreed-upon by family members and may be even out of awareness. Implicit family process and couple rules may facilitate or constrain family relationship and intimate couple relationship growth. Prevalence of family rules may be different across cultures. Family members may perceive their rules and family functioning differently according to their family position and gender. Married couples may view their relationship rules differently than couples who cohabit. This study utilized the Family Implicit Rules Profile (FIRP) and the Couples Implicit Rules Profile (CIRP) Questionnaires to answer these research questions. The questionnaires were translated into Hungarian, and the content validity of the Hungarian translation was established. Hungarian non-clinical families and couples were compared to American (U.S.) non-clinical families and couples to examine how prevalent implicit rules were in the two cultures. According to the findings, Hungarian families and couples scored lower on the total FIRP and CIRP scores. Hungarian families perceived implicit family rules regarding kindness and monitoring less prevalent, and rules regarding constraining their thoughts, feelings and self more prevalent than American families. No differences were found in expressiveness and connection and inappropriate caretaking of parents between the two cultures. Hungarian couples perceived their implicit relationship rules regarding kindness, expressiveness and connection and monitoring less prevalent than American couples. No differences in implicit rules about constraining thoughts, feelings and self and inappropriate caretaking of partner were found between the two cultures. Mothers in both cultures viewed their families in a more positive light than other family members, and female family members (mothers and daughters) were more positive than their male counterparts (fathers and sons) about rules in their families in both cultures. Sons in both cultures perceived more responsibility to protect their parents emotionally than did daughters. Married couples in both cultures perceived their relationship rules more favorably in terms of kindness and monitoring than cohabiting couples. Results were interpreted in the context of cultural differences between the American and the Hungarian cultures. Limitations and the possibility of future research are discussed.

Magnesium alloys are being developed as advanced materials for structural applications where reduced weight is a primary motivator. Alloying can enhance the properties of magnesium without significantly affecting its density. Essential to alloy development, inclusive of processing parameters, is knowledge of thermodynamic, kinetic, and mechanical behavior of the alloy and its constituents. Appreciable progress has been made through conventional development processes, but to accelerate development of suitable wrought Mg alloys, an integrated Materials Genomic approach must be taken where thermodynamics and diffusion kinetic parameters form the basis of alloy design, process development, and properties-driven applications. The objective of this research effort is twofold: first, to codify the relationship between diffusion behavior, crystal structure, and mechanical properties; second, to provide fundamental data for the purpose of wrought Mg alloy development. Together, the principal deliverable of this work is an advanced understanding of Mg systems. To that end, the objective is accomplished through an aggregate of studies. The solid-to-solid diffusion bonding technique is used to fabricate combinatorial samples of Mg-Al-Zn ternary and Mg-Al, Mg-Zn, Mg-Y, Mg-Gd, and Mg-Nd binary systems. The combinatorial samples are subjected to structural and compositional characterization via Scanning Electron Microscopy with X-ray Energy Dispersive Spectroscopy, Electron Probe Microanalysis, and analytical Transmission Electron Microscopy. Interdiffusion in binary Mg systems is determined by Sauer-Freise and Boltzmann-Matano methods. Kirkaldy*s extension of the Boltzmann-Matano method, on the basis of Onsager*s formalism, is employed to quantify the main- and cross-interdiffusion coefficients in ternary Mg solid solutions. Impurity diffusion coefficients are determined by way of the Hall method. The intermetallic compounds and solid solutions formed during diffusion bonding of the combinatorial samples are subjected to nanoindentation tests, and the nominal and compositionally dependent mechanical properties are extracted by the Oliver-Pharr method. In addition to bolstering the scantly available experimental data and first-principles computations, this work delivers several original contributions to the state of Mg alloy knowledge. The influence of Zn concentration on Al impurity diffusion in binary Mg(Zn) solid solution is quantified to impact both the pre-exponential factor and activation energy. The main- and cross-interdiffusion coefficients in the ternary Mg solid solution of Mg-Al-Zn are reported wherein the interdiffusion of Zn is shown to strongly influence the interdiffusion of Mg and Al. A critical examination of rare earth element additions to Mg is reported, and a new phase in thermodynamic equilibrium with Mg-solid solution is identified in the Mg-Gd binary system. It is also demonstrated that Mg atoms move faster than Y atoms. For the first time the mechanical properties of intermetallic compounds in several binary Mg systems are quantified in terms of hardness and elastic modulus, and the influence of solute concentration on solid solution strengthening in binary Mg alloys is reported. The most significant and efficient solid solution strengthening is achieved by alloying Mg with Gd. The Mg-Nd and Mg-Gd intermetallic compounds exhibited better room temperature creep resistance than intermetallic compounds of Mg-Al. The correlation between the concentration dependence of mechanical properties and atomic diffusion is deliberated in terms of electronic nature of the atomic structure.

Thèse de doctorat présenté en vue de l'obtention du doctorat en psychologie - recherche intervention, option psychologie clinique (Ph.D) / Bien que les relations amoureuses puissent enrichir la vie d’un individu et favoriser son bien-être, elles peuvent également être une source de détresse lorsque des difficultés conjugales surviennent. Les comportements positifs et négatifs émis par les partenaires pourraient avoir un rôle important à jouer dans la satisfaction et l’engagement conjugaux et sont donc souvent ciblés dans le cadre de la psychothérapie conjugale. Cependant, peu d’études se sont intéressées simultanément à ces deux types de comportements pour comprendre leur contribution relative au fonctionnement relationnel. De plus, la présence d’insécurités d’attachement (anxiété d’abandon et évitement de l’intimité), fréquentes chez les partenaires qui consultent en thérapie de couple, pourrait teinter la manière dont ces comportements sont perçus. Ainsi, il semble important de réaliser des études s’intéressant à la fois à la perception des comportements positifs et négatifs du/de la partenaire et aux insécurités d’attachement dans l’étude du lien entre ces variables et le fonctionnement relationnel. Bien que plusieurs études se soient intéressées à ces facteurs de manière indépendante, peu d’entre elles les ont considérés conjointement afin d’atteindre une compréhension plus nuancée du lien entre ces variables. De plus, très peu d’études se sont intéressées à ces variables chez les partenaires de couples en situation de détresse conjugale, un contexte pouvant aussi affecter les perceptions d’un individu à l’égard des comportements de son/sa partenaire. Cette recherche doctorale vise à mieux comprendre les liens entre la perception des comportements positifs et négatifs, les insécurités d’attachement et des indicateurs de fonctionnement relationnel chez les couples consultant en thérapie conjugale. La première étude s’est intéressée aux liens entre la perception de deux comportements du/de la partenaire, un positif (soutien conjugal) et un négatif (violence psychologique), et deux indicateurs de fonctionnement relationnel chez les deux partenaires : la satisfaction conjugale et la volonté d’investir dans la relation. Cette étude s’est aussi intéressée au rôle modérateur de l’anxiété d’abandon dans ces associations. La deuxième étude s’est intéressée aux liens entre les insécurités d’attachement et le sous-engagement des deux partenaires en considérant la perception des comportements positifs et négatifs du/de la partenaire en tant que variables intermédiaires. Dans l’ensemble, les résultats obtenus suggèrent que les comportements positifs pourraient être particulièrement importants pour expliquer le fonctionnement relationnel des partenaires en situation de détresse conjugale. Les comportements négatifs seraient également associés à leur fonctionnement relationnel, mais dans une moindre mesure que les comportements positifs. La première étude a aussi permis de démontrer que le lien entre le soutien conjugal perçu de la part du/de la partenaire et le fonctionnement relationnel varie en fonction du niveau d’anxiété d’abandon d’un individu, bien qu’il y ait des différences de genre. La deuxième étude a démontré que la perception des comportements positifs du/de la partenaire pourrait constituer un mécanisme impliqué dans l’association entre les insécurités d’attachement et le sous-engagement des partenaires. Nos résultats suggèrent que l’augmentation des comportements positifs, tout en favorisant leur perception par les partenaires, pourrait constituer un facteur-clé des interventions visant à améliorer le fonctionnement relationnel des partenaires en situation de détresse conjugale. / While romantic relationships can enrich an individual's life and promote their well-being, they can also be a source of distress when relational difficulties arise. Positive and negative partner behaviors could have an important role to play in relationship satisfaction and relationship commitment and as such, they are often targeted in the context of couple therapy. However, few studies have considered these two types of behaviors simultaneously to understand their relative contribution to relationship outcomes. In addition, the presence of attachment insecurities (attachment anxiety and attachment avoidance), which are frequent among partners who seek couple therapy, could change the way that these behaviors are perceived. Thus, it seems important to carry out studies focusing both on the perception of positive and negative partner behaviors and on attachment insecurities in the study of the association between these variables and relationship outcomes. Although several studies have investigated these factors independently, few studies have considered these factors together to achieve a more nuanced understanding of the association between these variables. Moreover, very few studies have looked at these variables in partners of relationally distressed couples, a context also likely to affect an individual's perceptions of their partner's behaviors. This doctoral research aims to better understand the links between the perception of positive and negative partner behaviors, attachment insecurities, and relationship outcomes among couples seeking couple therapy. The first study focused on the links between the perception of two partner behaviors, one that is positive (support) and one that is negative (psychological aggression), and two relationship outcomes in both partners: relationship satisfaction and the willingness to invest in the relationship. This study also investigated the moderating role of attachment anxiety in these associations. The second study investigated the links between attachment insecurities and both partners’ under-commitment by considering the perception of positive and negative partner behaviors as intermediate variables. Overall, the results suggest that positive partner behaviors could be particularly important to explain relationship outcomes in relationally distressed partners. Negative behaviors would also be associated with relationship outcomes, but to a lesser extent than positive behaviors. The first study also showed that the link between perceived partner support and relationship outcomes varies with an individual’s level of attachment anxiety, although there are gender differences. The second study showed that perceived positive partner behaviors may be a mechanism involved in the association between attachment insecurities and both partners’ under-commitment. Our results suggest that increasing positive behaviors, while also promoting their perception by the partners, could be key for interventions aimed at improving relationship outcomes in relationally distressed partners.

Épouser quelqu'un d'une autre culture que la sienne, c'est épouser quelqu'un qui a d'autres codes culturels, d'autres systèmes de signification. De cette union mixte, naissent des changements de comportements et de valeurs qui modifient 1 'identification de l'individu au groupe primaire et façonnent son insertion dans le groupe d'origine. Notre étude analyse le phénomène de l'union mixte où a lieu la conversion à l'islam de la femme québécoise d'origine canadienne-française, mariée à un Québécois d'origine algérienne. Notre réflexion porte sur les motifs de la conversion à l'islam, et sur les conséquences de cette conversion sur la convertie, sur son entourage, compte tenu de l'application des préceptes religieux qui en est une fondamentaliste. / Québec Université Laval, Bibliothèque 2013

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The purpose of this research journey was twofold: (1) to investigate the ways in which the lives of women married to clergymen have been influenced by their position in the Dutch Reformed Church and (2) to collaboratively present ways of caring and supporting these women living within this reality. Discourse analysis explored the taken-for-granted truths and power relationships that inform these women's daily lives. Fifteen women embarked on this feminist narrative participatory action research journey, not only to tell their stories but also to negotiate for change in current practices as well as their own contexts. This research journey challenges the institutional structure of the Church through narratives of hope, survival and pain, as storied in a book (Lamentations and Butterflies, 2003), that were collaboratively constructed by the women living these realities. This book and research journey offers a deeper understanding of the experience of being a clergyman's wife in the Dutch Reformed Church. / Practical Theology / M.Th. (Practical Theology)