Nas últimas décadas, os Lagerstätten estiveram no centro das discussões relativas à história paleobiológica e geológica da Terra. Em particular, o Membro Crato da Formação Santana (Bacia do Araripe, Nordeste do Brasil) é um dos mais significantes Lagerstätten do Cretáceo já que registra invertebrados, vertebrados e plantas excepcionalmente preservados em sedimentos carbonáticos de um palaeolago. O principal objetivo desta dissertação é lançar luz sobre os processos de preservação responsáveis pela fossilização de insetos e peixes com tecidos moles em 3D. Lâminas petrográficas e diversas técnicas paleométricas - micro-Espectroscopia Raman, Fluorescência de raios-X (FRX) convencional, micro-FRX com fonte de luz sincrotron (RS-µFRX), emissão de Raios-X induzida por partículas (PIXE), microscopia eletrônica de varredura (MEV) e espectroscopia de energia dispersiva de Raios-X (EDS) - foram empregadas para caracterizar a rocha matriz, a morfologia e fidelidade de preservação dos tecidos moles e as composições elementares e moleculares dos fósseis em escala de centímetros e mícron. Os resultados revelam que, enquanto insetos e tecidos moles de peixes encontrados nos denominados calcários beges (BL) são substituídos por pseudomorfos de pirita framboidal (após oxidação da pirita), os quais ocorrem juntamente com possíveis substâncias poliméricas extracelulares secretadas por bactérias (EPS), tecidos de peixes dos calcários cinza (GL) são querogenizados. Em insetos, existe variação de tamanho dos framboides para dentro dos fósseis, que é aqui interpretada como produto do equilíbrio entre as taxas de difusão e de nucleação dos minerais. Além disso, a distribuição preferencial de Zn e Cu em estruturas piritizadas de insetos e peixes em comparação com a sua matriz é aqui considerada como sendo o resultado da fixação de elementos químicos em biofilmes bacterianos. Zn concentrado nos ossos de peixes com querogenizados e Fe/Cu observados em seus tecidos moles são considerados como tendo sido incorporados durante a vida dos peixes. No caso particular de peixes, modelo originalmente proposto para a preservação de metazoários do Pré-cambriano é aqui aplicado para explicar a variação de fossilização entre as fácies BL e GL. Lâminas petrográficas revelam que os GL têm geralmente teor de argila/matéria orgânica maior do que os BL, implicando que as taxas de soterramento poderiam ter sido mais intensas nos GL. Isto teria colocado carcaças em decomposição mais rapidamente na zona sedimentar de metanogênese, sendo formado o querogênio. Por outro lado, carcaças depositadas na fácies BL poderiam ter passado período mais longo na zona de redução de sulfato, o que teria levado à piritização generalizada. Além disso, a baixa porosidade do microespato, o cimento e a argila poderiam ter diminuído a migração de aceptores de elétrons dos processos de respiração bacteriana anaeróbia - particularmente redução de sulfato (RS) e metanogênese - e de seus produtos biogeoquímicos, estreitando a zona de RS, o que teria reduzido a influência da piritização em alguns níveis. Enquanto que a piritização resultou na preservação de fibras musculares em 3D, sarcolema, possíveis núcleos celulares, tendões e olhos, a querogenização preservou tecidos conjuntivos, tegumento e fibras musculares distorcidas e compactadas. Em conclusão, é aqui proposto que fácies influenciadas por processos paleoambientais e geobiológicos produziram fósseis com gradiente diferencial de fidelidade de preservação de acordo com cada via tafonômica seguida. / Over the past decades, the so-called Fossil Lagerstätten have been in the core of discussions concerning the palaeobiological and geological history of the Earth. In particular, the Crato Member from the Santana Formation (Araripe Basin, north-east Brazil) is one of the most significant Cretaceous Lagerstätten since it records exceptionally well-preserved fossil invertebrates, vertebrates, and plants, deposited in palaeolake carbonate beds. The main aim of this dissertation is to shed light on the preservational processes responsible for the fossilization of insects and fishes still retaining 3D soft tissues. Petrographic thin sections and several palaeometric techniques - micro-Raman Spectroscopy, conventional X-ray Fluorescence (XRF), Synchrotron micro-XRF (SR-µXRF), Particle-Induced X-ray Emission (PIXE), Scanning Electron Microscopy (SEM), and Energy-Dispersive X-ray Spectroscopy (EDS) - have been employed to characterize the host rock, soft-tissue morphology and preservational fidelity, and fossil elemental and molecular compositions in centimetre to micrometre scale. The results reveal that while insects and fish soft-tissues found in the so called beige limestones (BL) are replaced by framboidal pyrite pseudomorphs (after pyrite oxidation) occurring together with putative bacterially-secreted extracellular polymeric substances (EPS), labile tissues of fishes from the grey limestones (GL) are kerogenized. In insects, there is a variation of framboid size inward the fossils, which is here interpreted as a product of the balance between diffusion and mineral nucleation rates. Moreover, the preferential distribution of Zn and Cu in pyritized insect/fish labile structures in comparison to their rock matrix is here considered as being the result of element fixation in bacterial biofilms. Zn concentrated in bones of kerogenized fishes and Fe/Cu occurring in their soft tissues are considered to have been incorporated during fish life. In the particular case of fishes, a model originally proposed for metazoan preservation in the Precambrian is here applied to explain the variation of fossilization between the BL and GL facies. Petrographic thin sections reveal that GL have generally higher clay/organic matter contents than BL, thus implying that burial rates might have been more intense in the former. This could have placed decaying carcasses more quickly in the methanogenesis sedimentary zone, in that way being kerogenized. On the other hand, carcasses deposited in the BL facies could have spent a longer period in the sulphate-reduction zone, which would have accounted for pervasive pyritization. Additionally, microspar low porosity, cement and clay could have diminished both downward migrations of electron acceptors for anaerobic bacterial respiration processes - particularly sulphate-reduction (SR) and methanogenesis - and of their biogeochemical products, narrowing the SR zone, which would have lowered the impact of pyritization in some levels. While pyritization has recorded 3D muscle fibres, sarcolemma, putative cell nuclei, tendons and eyes, kerogenization has yielded connective tissues, integument and compressed/distorted muscle fibres. In conclusion, it is here proposed that palaeoenvironmental/geobiological-influenced facies have yielded fossils with a variable preservational-fidelity gradient, accordingly to each taphonomic pathway followed.

Made available in DSpace on 2016-04-26T20:23:00Z (GMT). No. of bitstreams: 1 Cristiane Maria Freitas de Mello.pdf: 814956 bytes, checksum: b0e04d3332d5cd3010f5271cc77b1b72 (MD5) Previous issue date: 2014-08-12 / This study aims to investigate the freedom of expression of the employee on social networks, focusing on the right to criticism and its impact on the employment contract, notably with reference to the image of the employer, because there is no law that concerns this complex discussion. The deductive method was used, and by reason of incipient discussion about the topic in Brazil, the foreign doctrine and jurisprudence has been studied with use of the comparative method. By reason of multiple laws of several derivations, this study extended to other areas of legal sciences as Constitutional, Civil and Labor law, aiming to show the connection between freedom of expression, Democratic State, as a finalistic political formula, and human dignity. Adopting this interdisciplinary perspective, it can be shown how natural persons and business' entities are bound to constitutional laws that define rights and guarantees, and can yield the assertion of the labor rights claims that are nonspecific in the company scope. Since the worker, in his special situation of subordination, has several duties that impose restrictions on his freedom of expression, the obligations of fidelity and loyalty were also studied. By reason of absence of primacy among rights to honor and image, and right of freedom of expression. It was deduced that the need for implementing the method of weighing between the principles of the factual case and preserving the essential core principle that does not prevail, even in social networks. Therefore, the reasonable exercise of the right of criticism in social networks without abuse and without the use of excessive and insulting terms is, in principle, given the importance of freedom of expression in a democratic state. This right however, does not protect either crimes of libel, defamation and slander, or the criticisms aiming to disseminate strategic information, by instances from the organization structure, methods of production or sensitive data of the company / O presente estudo busca investigar a liberdade de expressão do empregado nas redes sociais, mormente o direito de crítica e sua repercussão no contrato de trabalho, especialmente quanto à imagem do empregador, pois não existe no ordenamento jurídico pátrio qualquer normativo que verse sobre essa complexa discussão. Para tanto, foi utilizado o método dedutivo e, em razão do incipiente debate no Brasil acerca do tema, o método comparativo, com verificação da questão na doutrina e jurisprudência estrangeira. Em razão da pluralidade de normas de diversas derivações, a pesquisa se estendeu por outras áreas das ciências jurídicas, como Direito Constitucional, Civil e Trabalhista, visando evidenciar a conexão entre a liberdade de expressão, o Estado Democrático de Direito, enquanto fórmula política de caráter finalístico, e a dignidade da pessoa humana, para assim concluir pela vinculação dos particulares às normas constitucionais definidoras de direitos e garantias e pela afirmação dos direitos inespecíficos trabalhistas no âmbito da empresa. Como o trabalhador, na sua especial situação de subordinação, está sujeito a uma série de deveres que supõem restrições ao exercício de sua liberdade de expressão, foram estudadas as fronteiras do direito de crítica, com aprofundamento nos deveres de boa-fé e, consequentemente, de lealdade e fidelidade. Em razão da ausência de primazia dos direitos à honra e à imagem sobre o direito de liberdade de expressão, porque são igualmente tutelados pelo texto constitucional, deduziu-se pela necessidade de aplicação do método de ponderação entre os princípios no caso concreto de colisão, com a preservação do núcleo essencial do princípio não prevalente, ainda que no âmbito das redes sociais. Logo, o exercício razoável, ou seja, sem abusos, sem a utilização de termos excessivos e insultuosos, do direito de crítica nas redes sociais é, em princípio, pleno, dada a importância da liberdade de expressão no Estado democrático. Tal direito, contudo, não protege os crimes de injúria, difamação e calúnia, nem as críticas tendentes a divulgar informações sobre a organização e os métodos de produção da empresa ou dados sigilosos

Assessment of trophic interactions between increasing populations of New Zealand fur seals (Arctocephalus forsteri) and fisheries in southern Australia is limited due to a lack of species specific demographic data and an understanding of the factors influencing population growth. To establish species specific demographic parameters a cross-sectional sample of New Zealand fur seal females (330) and males (100) were caught and individually-marked on Kangaroo Island, South Australia between 2000 and 2003. The seals were aged through examination of a postcanine tooth, which was removed from each animal to investigate age-specific life-history parameters. Annual formation of cementum layers was confirmed and accuracy in age estimation was determined by examination of teeth removed from individuals of known-age. Indirect methods of assessing reproductive maturity based on mammary teat characteristics indicated that females first gave birth between 4-8 years of age, with an average age at reproductive maturity of 5 years. Among reproductively mature females, age-specific reproductive rates increased rapidly between 4-7 years of age, reaching maximum rates of 70-81% between 8-13 years, and gradually decreased in older females. No females older than 22 years were recorded to pup. Age of first territory tenure in males ranged from 8-10 years. The oldest female and male were 25 and 19 years old, respectively. Post-weaning growth in females was monophasic, characterised by high growth rates in length and mass during the juvenile growth stage, followed by a gradual decline in growth rates after reproductive maturity. In contrast, growth in males was biphasic and displayed a secondary growth spurt in both length and mass, which coincided with sexual and social maturation, followed by a rapid decline in growth rates. Age-specific survival rates were high (0.823-0.953) among prime-age females (8-13 yrs of age) and declined in older females. Relative change in annual pup production was strongly correlated with reproductive rates of prime-age females and adult female survival between breeding seasons.

<p>This dissertation considers packet-switched wireless networks for transmission of variable-rate layered hybrid video streams. Target applications are video streaming and broadcasting services. The work can be divided into two main parts.</p><p>In the first part, a novel quality-scalable scheme based on coefficient refinement and encoder quality constraints is developed as a possible extension to the video coding standard H.264. After a technical introduction to the coding tools of H.264 with the main focus on error resilience features, various quality scalability schemes in previous research are reviewed. Based on this discussion, an encoder decoder framework is designed for an arbitrary number of quality layers, hereby also enabling region-of-interest coding. After that, the performance of the new system is exhaustively tested, showing that the bit rate increase typically encountered with scalable hybrid coding schemes is, for certain coding parameters, only small to moderate. The double- and triple-layer constellations of the framework are shown to perform superior to other systems.</p><p>The second part considers layered code streams as generated by the scheme of the first part. Various error propagation issues in hybrid streams are discussed, which leads to the definition of a decoder quality constraint and a segmentation of the code stream to transmit. A packetization scheme based on successive source rate consumption is drafted, followed by the formulation of the channel code rate optimization problem for an optimum assignment of available codes to the channel packets. Proper MSE-based error metrics are derived, incorporating the properties of the source signal, a terminate-on-error decoding strategy, error concealment, inter-packet dependencies, and the channel conditions. The Viterbi algorithm is presented as a low-complexity solution to the optimization problem, showing a great adaptivity of the joint source channel coding scheme to the channel conditions. An almost constant image qualiity is achieved, also in mismatch situations, while the overall channel code rate decreases only as little as necessary as the channel quality deteriorates. It is further shown that the variance of code distributions is only small, and that the codes are assigned irregularly to all channel packets.</p><p>A double-layer constellation of the framework clearly outperforms other schemes with a substantial margin. </p><p>Keywords — Digital lossy video compression, visual communication, variable bit rate (VBR), SNR scalability, layered image processing, quality layer, hybrid code stream, predictive coding, progressive bit stream, joint source channel coding, fidelity constraint, channel error robustness, resilience, concealment, packet-switched, mobile and wireless ATM, noisy transmission, packet loss, binary symmetric channel, streaming, broadcasting, satellite and radio links, H.264, MPEG-4 AVC, Viterbi, trellis, unequal error protection</p>

This dissertation considers packet-switched wireless networks for transmission of variable-rate layered hybrid video streams. Target applications are video streaming and broadcasting services. The work can be divided into two main parts. In the first part, a novel quality-scalable scheme based on coefficient refinement and encoder quality constraints is developed as a possible extension to the video coding standard H.264. After a technical introduction to the coding tools of H.264 with the main focus on error resilience features, various quality scalability schemes in previous research are reviewed. Based on this discussion, an encoder decoder framework is designed for an arbitrary number of quality layers, hereby also enabling region-of-interest coding. After that, the performance of the new system is exhaustively tested, showing that the bit rate increase typically encountered with scalable hybrid coding schemes is, for certain coding parameters, only small to moderate. The double- and triple-layer constellations of the framework are shown to perform superior to other systems. The second part considers layered code streams as generated by the scheme of the first part. Various error propagation issues in hybrid streams are discussed, which leads to the definition of a decoder quality constraint and a segmentation of the code stream to transmit. A packetization scheme based on successive source rate consumption is drafted, followed by the formulation of the channel code rate optimization problem for an optimum assignment of available codes to the channel packets. Proper MSE-based error metrics are derived, incorporating the properties of the source signal, a terminate-on-error decoding strategy, error concealment, inter-packet dependencies, and the channel conditions. The Viterbi algorithm is presented as a low-complexity solution to the optimization problem, showing a great adaptivity of the joint source channel coding scheme to the channel conditions. An almost constant image qualiity is achieved, also in mismatch situations, while the overall channel code rate decreases only as little as necessary as the channel quality deteriorates. It is further shown that the variance of code distributions is only small, and that the codes are assigned irregularly to all channel packets. A double-layer constellation of the framework clearly outperforms other schemes with a substantial margin. Keywords — Digital lossy video compression, visual communication, variable bit rate (VBR), SNR scalability, layered image processing, quality layer, hybrid code stream, predictive coding, progressive bit stream, joint source channel coding, fidelity constraint, channel error robustness, resilience, concealment, packet-switched, mobile and wireless ATM, noisy transmission, packet loss, binary symmetric channel, streaming, broadcasting, satellite and radio links, H.264, MPEG-4 AVC, Viterbi, trellis, unequal error protection

La vaccination qui est le sujet sur lequel porte cette recherche est une des questions de santé publique les plus importantes; elle fait néanmoins l’objet de nombreuses controverses. Dans le contexte de cette thèse, c’est plutôt l’accès à la vaccination qui est mis en question. La présente recherche vise à analyser une stratégie d’amélioration de la couverture vaccinale à l’aide d’une évaluation de processus extensive en trois étapes faisant suite à une documentation approfondie du contexte. En effet, la recherche analyse les perceptions et les facteurs d’influence de la couverture vaccinale avant l’intervention, les assises conceptuelles et théoriques de cette intervention, l’implantation et la réception de l’intervention et enfin les résultats et les mécanismes mis en œuvre pour les atteindre. Les résultats indiquent que la vaccination s’insère dans l’ensemble des stratégies locales de protection fondées sur des notions endogènes du risque. Ces éléments culturels associés à des facteurs socioéconomiques et aux rapports entre parents et services de santé concourent à expliquer un niveau relativement bas de couverture vaccinale complète de 50% avant l’intervention. L’analyse exploratoire de l’intervention indique que celle-ci intègre une théorie initiale implicite et une philosophie. L’intervention finale était évaluable; cependant, la validation de sa théorie a été compromise par des écarts dans l’implantation. L’approche descriptive montre des taux de réalisation d’activités assez élevés, une atteinte de plus de 95% des cibles et un niveau de réception acceptable, ce qui indique que l’intervention est une stratégie réalisable mais à améliorer. La couverture vaccinale après l’intervention est de 87%; elle est influencée positivement par les niveaux de connaissance élevés des parents et le fait pour les enfants d’être nés dans un centre de santé, et négativement par l’éloignement par rapport au site de vaccination. L’atteinte des résultats suit la procédure principale d’amélioration du niveau de connaissance des parents. Celle-ci est basée sur un mécanisme latent qui est la perception des « opportunités » que fournit la vaccination pour prévenir divers risques sanitaires, sociaux et économiques. Cependant, des approches complémentaires tentent de maximiser les effets de l’intervention en utilisant les pouvoirs conférés aux relais communautaires féminins et la coercition sociale. Cette recherche contribue à éclairer la relation entre l’évaluation du processus et l’analyse de l’évaluabilité, à conceptualiser et opérationnaliser autrement les notions de doses d’intervention administrées et de doses reçues. Sur le plan de la pratique, la recherche contribue à proposer l’amélioration des profils de personnel pour les activités de vaccination et la vulgarisation de la stratégie. Des propositions sont faites pour l’amélioration de l’intervention et l’information des institutions de financement des interventions. / Immunization is one of the most important subjects in public health despite constant on-going controversies. In the context of this research it is more its accessibility that is at issue. This particular research is situated in the perspective of the comprehensive approaches to evaluation and analyses an immunization improvement strategy using a three steps process evaluation after documenting its context. The perceptions and factors influencing immunization coverage before the intervention are assessed, as well as the conceptual and theoretical foundations of the intervention, the implementation and reception of the intervention and mechanisms used to attain the results. The results indicate that immunization is integrated into the local strategies used for protection and grounded in the local concept of risk. Results show also that the context associated with socioeconomic factors and the relations between parents and health services contribute to explain the relatively low complete immunization coverage rate (50.3%) before the intervention. The exploratory analysis indicates that the intervention had an implicit theory and a philosophy. Although the intervention was adequate for an evaluation, discrepancies in the implantation compromised the possibilities of validating its initial theory and philosophy. The descriptive analysis showed that more than 95% of the recipients were reached by the intervention and the received dose of intervention was acceptable indicating that the intervention is a workable strategy that needs to be improved. The complete immunization coverage after the intervention was 87.3%; it was influenced positively by factors including parents’ level of knowledge and the fact that the child was born in a health center, and negatively by the long distances from household to immunization place. The strategies involved in the attainment of the results used parents’ knowledge improvement as a principal procedure. This contains an underlying mechanism mainly related to the perception of the opportunities that immunization permits for preventing various health, social and economic risks. However, complementary approaches tend to maximize intervention outcome by using the power given to female community immunization facilitators and social coercion. The research contributes to highlight the relationship between evaluability assessment and process evaluation, to propose a new conceptual and operational understanding of dose of intervention administered and dose of intervention received. On practical grounds, this research recommended the improvement of the immunization activities staff profile and the widespread adoption of the strategy after it improvement. Indications are provided to improve the intervention and to inform founding agencies.

No description available.

L'espérance se présente comme l'expérience d'un avenir qui n'a pas été encore vécu et qui se donne comme inobjectivable. Cette intuition a commandé la problématique de cette recherche, qui met au jour les conditions de possibilité d'une espérance véritable dans un monde – le nôtre – où elle ne trouve pas immédiatement sa place. Ce monde ''cassé'', comme l'appelle Gabriel Marcel, est sous l'emprise de la technique. C'est un monde où prime l'exigence du faire et où les questions existentielles sont réduites elles-mêmes à des ''problèmes'' qui doivent trouver leur ''solution'' comme n'importe quel problème relevant de l'ordre de l'avoir. Il y a, en ce sens, un ''problème de l'espérance ». Il se développe dans une philosophie qui s'émancipe de la foi et dont on trouve des illustrations notamment dans le probabilisme de Hume et dans le matérialisme de Bloch. Or Gabriel Marcel fait le pari, par la méthode dite de la ''réflexion seconde'', de placer l'espérance sous le sceau du ''mystère''. Il s'agit alors de comprendre que l'espérance, pensée sur le plan de l'être et non plus de l'avoir, relève d'une expérience qui est toujours en cours de formation, et qui ouvre le chemin que suit une personne que définissent sa capacité d'agir, ses relations avec les autres personnes et son aptitude à la responsabilité. Nous soutenons dans ce sens, avec l'appui de Ricœur, que l'identité du sujet de l'espérance est essentiellement intersubjective et ouverte, selon une exigence de fidélité créatrice.  Nous trouvons plus précisément dans le nous familial, comme l'appelle Marcel, la condition de possibilité d'une expérience concrète de l'espérance, comprise alors comme patience d'un présent éprouvant et confiance en un avenir incertain. Renvoyant dos à dos, pour ce faire, les conceptions essentialiste et constructiviste de la famille, nous appelons vœu créateur ce qui, au sein même de la famille, dont nous proposons une conception élargie, est jaillissement du nouveau et promesse de vie. Ainsi nous affirmons que l'espérance, pour invérifiable qu'elle soit, est, mais selon des formes authentiques ou inauthentiques. L'enjeu de ce travail, en reconnaissant cette différence au cœur même de l'espérance, est de comprendre comment celle-ci, plus que comme un ensemble de moyens, se présente fondamentalement comme une mise en route qui se reçoit d'un appel de ou à l'autre, et qui est constitutive de toute action vouée au temps. La présence de cet autre déborde toute tentative d'objectivation. Elle est le lieu intérieur où se vit in fine l'attente active qu'est l'espérance comme expérience ontologique. / Hope appears as the experience of a future which was not still lived yet and which is given as inobjectivable. This intuition has commanded the problematic of this research, which brings to light the conditions of possibility of a true hope in a world – ours – where it does not immediately find its place. This « broken » world, as Gabriel Marcel calls it, is under the influence of technic. It's a world in which prevail the need to do things, and also where existential questions are reduced to ''problems'' which must find their ''solution'' as any other problem come under the order of the possession. In this way, there is a ''problem of hope''. A philosophy is growing which emancipate itself from faith and which illustrations are found in particular in Hume's probabilism and Bloch's materialism. But Gabriel Marcel, by the method said about ''second reflection », bet to place hope under the seal of ''mystery''. It's all about understanding that hope, thought on the plan of ''the being'' and no more of ''the having'' is an experience still on training and which opens the way that follows a person defined by its ability to act, its relations to others and its aptitude to responsibility. In this sense, we support, with Ricoeur's support, that the subject identity of hope is essentially intersubjective and opened, according to a requirement of creative fidelity. We find more exactly in the « I and you familial» as Marcel calls it, the condition of possibility of a concrete experience of hope, understood as patience of a trying present and trust in an uncertain future. Referring back to back, the essentialist and constructivist conceptions of the family, we call creative vow, what within the family, of which we propose an enlarged conception is springing forth for the new and promise of life. So we assert that hope, however unverifiable as it may be, is, but according to authentic and inauthentic forms. The challenge of this work, recognizing this difference at the very heart of hope, is to understand how it, more than as a set of means, is fundamentally a start-up that is received from a call. From one to other, and which is constitutive of all action devoted to time. The presence of this other overflows any attempt at objectification. It is the inner place where the active expectation of hope as an ontological experience is lived.

Cette thèse a cherché à présenter une description des versions de Midrash Séder Eliyahou tout en se polarisant sur la recherche de la version authentique, aussi précise que possible. Cette étude interdisciplinaire tente d'allier les aspects paléographiques des manuscrits, la langue hébraïque ainsi que la littérature comparée. Le corpus de ce Midrash contient six éléments manuscrits. Seul le Codex, BAV, Vat. ebr. 31 est complet et en excellent état. Les trois éditions imprimées complètes, sont celles de : Venise (1598), première édition, copie d'un incunable, Prague (1677) et de Vienne (1901), l'édition critique de Friedman, basée sur BAV, Vat. ebr.31. Nous avons choisi ce dernier comme référent. Nous proposons l'hypothèse suivante : La fidélité est pas uniforme, il y a deux dimensions de fidélité, pouvant sembler contradictoires : paléographique et / ou exégétique. L'étude de sources de la Genizah génère deux cas de figure possibles : Il y aurait soit une seule famille du Midrash Séder Eliyahou, plus ou moins fidèles à la version de BAV, Vat. ebr. 31. Soit il existerait une autre version de SER, inconnue et divergente de celle de Vatican 31, générant une ou plusieurs autres familles de manuscrits. Si la seconde hypothèse se vérifie, il pourrait s'agir d'un Midrash en formation. La version occidentale est entièrement développée et fixée tandis que la version orientale aurait été transmise oralement sans avoir atteint sa forme définitive. / This thesis has sought to present a description of the versions of Midrash Seder Eliyyahu while polarizing on the search for the authentic version, as accurate as possible. This interdisciplinary study tries to use the palaeographic aspects of the manuscripts, the Hebrew language as well as comparative literature. The corpus of this Midrash contains six manuscripts elements. Only the Codex BAV, Vat. ebr. 31 is complete and in excellent condition. The three printed editions complete, are those of: Venice (1598), first edition, copy of incunabula, Prague (1677) and Vienna (1901), the critical edition of Friedman, based on BAV, Vat. ebr.31. This manuscript version was chosen as a referent. We propose the following hypothesis: The fidelity is not uniform, there are two loyalty dimensions, may seem contradictory : paleographic or/and exegetical. The study of the sources from the Genizah generated two possible cases : There would be only one family of the Midrash Seder Eliyyahu, referring to the version of BAV, Vat. ebr. 31. Either exist another version of SER, unknown and divergent from the Vatican 31, which will form one or more other family of manuscripts. If this second assumption proves true, Seder Eliyyahu could be a processing Midrash. The Western version is fully developed and secured while the eastern version be transmitted orally and not having reached its final form.

Cette thèse porte sur les relations entre la noblesse et le prince dans les duchés de Lorraine au coursd’une période qui s’étend des années 1620 à 1737. Elle les explore dans le cadre d’un renforcement du pouvoirducal et dans une période de transition troublée.Dans cet État souverain des confins, la noblesse représentée par quelques puissantes familles issues del’ancienne chevalerie incarne l’élite sociale, morale, et politique. Étroitement associée aux responsabilités, elleest affectée au premier plan par les ruptures qui scandent le XVIIe siècle : la guerre, l’occupation française etl’exil. Autant d’évènements qui déstabilisent le service princier et éprouvent la fidélité au duc, fondementessentiel des rapports de la noblesse au pouvoir. Cette étude revisite les notions de service, de devoir etd’honneur, constitutives de l’identité nobiliaire.Après plus d’un demi-siècle de désordres, la paix de Ryswick (1697) ramène la stabilité et le princeretrouve ses duchés. Le rétablissement de l’État s’effectue dans une dialectique entre tradition et changement. Lanoblesse qui aspire à retrouver sa place auprès du duc est confrontée à de nouvelles incertitudes qu’elle surmontegrâce à la résurgence de la faveur princière et au prix d’une recomposition de l’ordre.L’équilibre des forces est mis à mal en 1729 avec l’avènement de François III dont le destin se joue pardelàles frontières. Détaché de son territoire patrimonial, le jeune souverain rompt le lien avec la noblesselorraine et met fin à l’impératif absolu du service princier.L’étude des relations entre la noblesse et le duc durant le long XVIIe siècle est une réflexion sur lasociété politique d’un État aux limites sensibles et aléatoires. / This study tackles the relation between nobility and prince in the Duchies of Lorraine during the periodthat spans from the 1620s to 1737. The academic frame in which it is explored is one marked by reinforced ducalpower and by much turmoil within a transitory period.In such a border-line sovereign state, the nobility as represented by a few powerful houses stemmingfrom ancient chivalric backgrounds, embodies the social, moral and political elite of the day. Closely involved inthe Duke’s wields of executive power, and more than any other social body, nobles suffered from the manypoints of rupture that punctuated the 17th century : wars, French occupation and exile did indeed challeng thePrince’s service. These points of rupture jeopardized the fidelity to the Duke, one of the essential foundations ofthe link between the nobility and Power. The study revisits such key-notions as service, duty, and honour,notions which shape up nobles’ identity.After more than a half-century of disorders of all kinds, the Ryswick Peace (1697) brought the situationback to a relative stability and the Prince regained his Duchies. Putting back the State to its feet implied adialectical tension between tradition and change. The nobility eager to regain former responsabilities isconfronted with new uncertainties that will be partly overcome by the resurgence of princely favours and areshuffling of the Order.The balance of forces is put at stake in 1729 when Francois III comes to the throne and his fate is tomaterialize beyond frontiers. Detached from its heritage territory, the prince unbinds the ties which linked thenobility and puts an end to the absolute imperative of a prince’s service.The study of relations between nobility and duke throughout the long 17th century consists in an overallquestioning of a political society in a border-conscious and border-moving state.