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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
141

A primeira escola secundária pública de Cascavel: O Ginásio Wilson Joffre (1960-1980) / The first school of public Cascavel: the gym Joffre Wilson (1960-1980)

Nath, Valdecir Antonio 12 April 2013 (has links)
Submitted by Rosangela Silva (rosangela.silva3@unioeste.br) on 2018-05-11T13:20:10Z No. of bitstreams: 3 Valdecir Antonio Nath - Vol I.pdf: 3150119 bytes, checksum: f537bbdf16a3aed4f04a76be098c4c37 (MD5) Valdecir Antonio Nath Vol II.pdf: 41866910 bytes, checksum: 14486158e69a5a3358b4de4e018fa8b1 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-05-11T13:20:10Z (GMT). No. of bitstreams: 3 Valdecir Antonio Nath - Vol I.pdf: 3150119 bytes, checksum: f537bbdf16a3aed4f04a76be098c4c37 (MD5) Valdecir Antonio Nath Vol II.pdf: 41866910 bytes, checksum: 14486158e69a5a3358b4de4e018fa8b1 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2013-04-12 / This dissertation entitled The first public high school in Cascavel: the gym Wilson Joffre (1960-1980), lies in the field of history of scholastic institutions. Object of study is the first secondary school, public gym Cascavel, founded in 1959. The main objective of the research was to discuss the genesis of this institution, considering the elements of the social, political and economic times, as well as the implications for its structure. The research points to the regional political interference, the student mobilization in the maintenance of the school as its expansion in care due to the growing demand from the process of urbanization and modernization which passed by the municipality. The reconstruction of the history of the State College Wilson Joffre shows the fragility of the public when it comes to public school. We seek to identify the main elements that constitute its history. We hypothesized that the Gym, today located in the city center, was at the time of its foundation, a school of elites, which will be confirmed in the course of this work. Its architecture and location of your installation is not up to the standard of a school typically bourgeois, however, in the case of Rattlesnake effectively contributed to the formation of political and economic leaders that are now part of the elite Cascavel and studied at the gym. The gym suffered the interference of political struggles local, regional and national seeking to assert their interests, especially with regard to curriculum, adjusting to the determinations in the first moment of Law No. 4024/61 and after the Reform of Teaching First and Second Degrees, Law No. 5692/71, which guided and normalized secondary education in Brazil. Access to sources was one of the great challenges of this work, since many documents were lost, limiting data and establishing some gaps in the research. This is the documentary analysis, comparing its contents with the data of reality, memory, built by local elites, networks of interest, social projects in dispute, establishing the light of the literature referenced, especially in Gramsci, Buffa, Nosella and Saviani. We seek to grasp the historical significance of the theoretical and ideological statements by the social, political and economic context in which they were produced. / Esta dissertação intitulada A primeira escola secundária pública de Cascavel: o ginásio Wilson Joffre (1960-1980), situa-se no campo da História das Instituições escolares. Tem por objeto de estudo a primeira escola secundária, o ginásio público de Cascavel, fundado no ano de 1959. O objetivo principal da pesquisa foi discutir a gênese dessa instituição, considerando os elementos do contexto social, político e econômico da época, bem como as implicações na sua estruturação. A pesquisa aponta para as interferências políticas regionais, a mobilização estudantil na manutenção da escola como da sua ampliação no atendimento em virtude da crescente demanda oriunda do processo de urbanização e modernização pela qual passava o Município. A reconstituição da história do Colégio Estadual Wilson Joffre mostra a fragilidade do sistema público quando se trata da escola pública. Procuramos apontar os principais elementos que constituíram sua história. Partimos da hipótese de que o Ginásio, hoje localizado no centro da cidade, era, na época de sua fundação, uma escola das elites, o que vai se confirmando no decorrer deste trabalho. Sua arquitetura e o local de sua instalação não condiziam com os padrões de uma escola tipicamente burguesa, no entanto, no caso de Cascavel contribuiu efetivamente para formação de líderes políticos e econômicos que hoje fazem parte da elite cascavelense e estudaram no ginásio. O ginásio sofreu as interferências das lutas políticas local, regional e nacional que procuravam fazer valer seus interesses, principalmente no que se refere à estrutura curricular, se ajustando às determinações no primeiro momento da Lei nº 4024/61 e depois da Reforma do Ensino de Primeiro e Segundo Graus, a Lei nº 5692/71, que orientou e normatizou o ensino secundário no Brasil. O acesso às fontes foi um dos grande desafios deste trabalho, uma vez que muitos documentos se perderam, limitando dados e estabelecendo algumas lacunas na pesquisa. Trata-se da análise documental, confrontando seu conteúdo com os dados da realidade, da memória construída pelas elites locais, das redes de interesse, dos projetos sociais em disputa, estabelecendo à luz da literatura referenciada, especialmente em Gramsci, Buffa, Nosella, e Saviani. Buscamos apreender o significado histórico dos fundamentos teóricos e ideológicos enunciados mediante o contexto social, político e econômico em que foram produzidos.
142

Una breve incursión en los inicios de la administración de recursos humanos en el sector público: la importancia de «The Study of Administration», de Woodrow Wilson, 1887 / Uma breve incursão aos primórdios da administração dos recursos humanos públicos: a importância de «The Study of Administration», de Woodrow Wilson, 1887 / A brief incursion into the beginning of human resources management in public administration: the importance of «The Study of Administration», by Woodrow Wilson, 1887

Lira, Miguel, Roso, Ana 10 April 2018 (has links)
In this paper will be analyzed the article published in Political Science Quarterly, Vol 2, n. 2, in June 1887, entitled «The Study of Administration», written by Woodrow Wilson. This is due to the fact that it has never been analyzed from the perspective of its impact on public human resource management. It is this gap in the literature that we seek to meetthrough this research. We may add that this will contribute to the intellectual heritage of the Classical Paradigm of Public Administration, whose ideas and assumptions creased over many decades of the twentieth century in the public sector in many countries throughout the world and the presence of vestiges of what would be the doctrines of New Public Management (NPM) almost a century later. / En este trabajo vamos a analizar el artículo publicado en la revista Political Science Quarterly, 2(2), de junio de 1887, titulado «The Study of Administration» de Woodrow Wilson. Esto se debe a que el texto nunca ha sido analizado desde la perspectiva del impacto en la administración de recursos humanos en el sector público. Hemos decidido llenar este vacío en la literatura a través de esta investigación. Podemos añadir que este artículo tendrá un gran impacto y contribuirá a la herencia intelectual del Paradigma Clásico de la Administración Pública, cuyas ideas y propuestas se consolidaron en el sector público de muchos países durante el siglo XX; así como algunos razgos de lo que casi un siglo después se convertiría en la doctrina del New Public Management (NPM). / Neste trabalho iremos analisar o artigo publicado na revista Political Science Quarterly, vol. 2, n. 2, de junho de 1887, intitulado «The Study of Administration», da autoria de Woodrow Wilson. Tal se deve ao fato de o texto nunca ter sido analisado na perspectiva do seu impacto na administração dos recursos humanos públicos. Será, então, esta lacuna na literatura que procuraremos colmatar através desta pesquisa. Podemos acrescentar que este impacto muito passará pelo contributo deste artigo para a herança intelectual do Paradigma Clássico da Administração Pública, cujas ideias e pressupostos vincaram durante muitas décadas do século XX no setor público de inúmeros países, além de uns resquícios do que seriam as doutrinas da New Public Management (NPM), quase um século depois.
143

Konzeptgeschichte des Morbus Wilson im deutschen Sprachraum

Boide, Philipp 24 January 2012 (has links)
Die Arbeit geht der offenbar bisher kaum bearbeiteten Ideengeschichte von Kinnier Wilsons hepatolentikulärer Degeneration und Carl Westphals Pseudosklerose in der deutschsprachigen Literatur von der Mitte des 19. Jahrhunderts bis in die Gegenwart nach. Als Beispiel zeigt sie eindrücklich, wie neurologische Krankheitslehren entstanden sind. Außerdem wird deutlich, wie klinische Beschreibungen von zum Teil nur wenigen Fällen sukzessive in nosologische Diagnosen mit anerkannten Therapiemaßnahmen mündeten und schließlich die für die Krankheit verantwortlichen Genloki identifiziert werden konnten. Im deutschen Sprachraum herrschte Uneinigkeit darüber, ob eine von Westphal 1883 beschriebene Krankheit deckungsgleich mit der von Wilson beschriebenen und später nach ihm benannten Entität sei. Dieser Artikel führt u. a. anhand von Arbeiten von Adolf Strümpell, Alois Alzheimer, August Bostroem oder Walther Spielmeyer die wesentlichen Beiträge auf dem Weg des Erkenntnisgewinns vor Augen und wendet sich der Frage nach der Einheit beider Krankheiten zu. Für die Entwicklung der Therapie und deren Einsatz in der klinischen Praxis gewann ab 1970 in Ostdeutschland die Leipziger „Zentralstelle für Morbus Wilson“ für das Gebiet der ehemaligen DDR Bedeutung, deren Arbeit und Erfahrungen schließlich auch in die aktuellen „Leitlinien der Deutschen Gesellschaft für Neurologie“ (2008) über die Behandlung des M. Wilson eingeflossen sind
144

Symmetries of Super Wilson Loops and Fishnet Feynman Graphs

Müller, Dennis 19 April 2018 (has links)
Integrabilität hat sich als ein wichtiges Konzept erwiesen, um die Grenzen einer störungstheoretischen Beschreibung zu überwinden und ein tiefer gehendes Verständnis von speziellen vierdimensionalen Quantenfeldtheorien zu erlangen. Die der Integrabilität zugrunde liegende algebraische Struktur ist der Yangian, welchen man als eine unendlichdimensionale Erweiterung einer Lie-Algebra auffassen kann. In der vorliegenden Arbeit untersuchen wir die Yang’sche Symmetrie von super Wilson Schleifen und Fischnetz Feynman Graphen. Im ersten Teil dieser Arbeit diskutieren wir Maldacena–Wilson Schleifen in N=4 SYM Theorie. Unter Ausnutzung der nicht-chiralen Superraumbeschreibung des N=4 SYM Modells konstruieren wir den supersymmetrisch vervollständigten Schleifenoperator, welcher dual ist zu einer durch den vollen AdS5xS5 Superstring beschriebenen Minimalfläche. Wir zeigen, dass dieser Schleifenoperator sowohl globale superkonforme als auch lokale kappa Symmetrie besitzt, wobei wir letztere zur 1/2 BPS Eigenschaft der bosonischen Maldacena–Wilson Schleife in Beziehung setzen. Weiterhin berechnen wir den Einschleifenerwartungswert des Operators und beweisen dessen Endlichkeit. Anschließend beschäftigen wir uns detailliert mit der Yang’schen Symmetrie von glatten super Maldacena–Wilson Schleifen. Wir untersuchen anhand einer generischen Eichtheorie die verschiedenen Möglichkeiten, die Yang’schen Generatoren zu realisieren und begründen unsere Wahl einer Darstellung in Form von eichkovarianten Operatoreinsetzungen. Unter Verwendung dieser Darstellung beweisen wir nachfolgend die Yang’sche Invarianz des vollen Einschleifenerwartungswertes der super Maldacena– Wilson Schleife. Im zweiten Teil dieser Arbeit beschäftigen wir uns mit Fischnetz Feynman Graphen, welche aus viervalenten Vertizes bestehen, die durch skalare Propagatoren miteinander verbunden sind. Wir zeigen, dass diese Diagramme zu allen Schleifenordnungen eine konforme Yang’sche Symmetrie aufweisen und konstruieren explizit die Yang’schen Generatoren, die diese Diagramme vernichten. Für Vielschleifendiagramme gelingt uns Letzteres durch eine Umformulierung der Symmetrie in Form von Eigenwertgleichungen inhomogener Monodromiematrizen, aus deren Entwicklung sich die Generatoren ablesen lassen. Die Yang’sche Symmetrie impliziert, dass Fischnetz Integrale partielle Differenzialgleichungen erfüllen, deren Form wir anhand des Boxintegrals illustrieren. / Quantum integrability has turned out to be an important concept in overcoming the limitations of perturbation theory and reaching a more profound understanding of particular four-dimensional quantum field theories. The algebraic structure that underlies integrability in field and string theory is the Yangian, which can be understood as an infinite-dimensional extension of a Lie algebra. Here, we investigate the Yangian symmetry of super Maldacena–Wilson loops and fishnet Feynman graphs. In the first part of this thesis, we discuss Maldacena–Wilson loops in N=4 SYM theory. Utilizing the non-chiral superspace formulation of the N=4 SYM model, we construct the full supersymmetric completion of this operator, which is the natural object dual to a minimal surface described by the full AdS5xS5 superstring. We show that the super loop operator enjoys global superconformal as well as local kappa symmetry, the latter being related to the 1/2 BPS property of the bosonic Maldacena–Wilson loop. Using a convenient type of transversal gauge, we establish the operators one-loop expectation value and prove it to be finite. We then perform a detailed study of the Yangian symmetries of smooth super Maldacena–Wilson loops. Focusing on a generic gauge theory setup, we analyze in detail the different options for representing the Yangian generators and argue for a representation in terms of gauge-covariant operator insertions. Subsequently, we utilize this approach to prove the Yangian invariance of the full one-loop expectation value. The second part of this thesis is devoted to the study of four-dimensional fishnet Feynman graphs, which are built from four-valent vertices that are joined by scalar propagators. We show that these diagrams feature a conformal all-loop Yangian symmetry, which we phase in terms of generators annihilating these graphs as well as in terms of inhomogeneous monodromy eigenvalue relations. The Yangian symmetry results in novel differential equations for this family of largely unsolved Feynman integrals and we shall study their form by considering the box integral as an example.
145

Apport de l'analyse chromosomique sur différents microréseaux d'ADN dans l'identification de nouvelles mutations et la caractérisation de gènes candidats impliqués dans la déficience intellectuelle / Contribution of chromosome analysis on different DNA Micro-Arrays in the identification of novel mutations and characterization of candidate genes involved in intellectual disability

Huynh, Minh Tuan 15 November 2013 (has links)
Anomalies de structure du génome et Déficience Intellectuelle : Recherche des gènes candidats de Déficience intellectuelle en utilisant l'analyse chromosomique sur microréseau d'ADN pangénomique 180K et l'analyse chromosomique sur microréseau d'ADN de haute résolution 1M ciblée des gènes candidats de Déficience intellectuelle. L'analyse chromosomique sur microréseau d'ADN (ACM) de haute résolution est une innovation technologique puissante afin de détecter les aberrations chromosomiques concernant les variations du nombre de copies. En utilisant l'ACM 180K, l'ACM 1M et la PCR quantitative, nous avons identifié les 5 variations du nombre de copies (CNV) intragéniques pathogènes de novo impliquant les gènes : RUNX1T1, KIAA1468, FABP7, ZEB2 (syndrome de Mowat-Wilson) et ANKRD11 (syndrome de KBG). Les 5 patients ayant une DI et une dysmorphie faciale. L'ACM 180K a révélé une délétion d'une taille de 92 kb emportant le gène KIAA1468 candidat pour le syndrome de West chez un enfant de 3 ans présentant une DI sévère et une encéphalopathie épileptique infantile précoce. Le criblage des mutations du gène KIAA1468 a été réalisé chez 35 patients atteints de syndrome de West. Un variant intronique c.2761-7 T>C et un variant faux-sens hérité de la mère c.3547 G>A avec signification clinque inconnue ont été identifiés. En utilisant des approches par l'ACM 1M de haute résolution chez 45 patients atteints de DI idiopathique modérée à sévère, un seul CNV causal a été identifié, une délétion intragénique d'une taille de 28.37 kb du gène ZEB2. Notre étude confirme une fréquence très faible des délétions/duplications intragéniques avec la détection d'une seule aberration chromosomique (1/45). En conclusion, si la fréquence des mutations ponctuelles est élevée, nous avons également souligné l'application de la technique de séquençage à haut débit avec un rendement diagnostique jusqu'à 45%-55% des cas de DI sévère idiopathique chez lesquels aucun CNV n'a été détecté sur ACM / Chromosomal structural abnormalities and Intellectual Disability : In search of intellectual disability candidate genes by using pangenomic comparative genomic hybridization 180 K and high resolution comparative genomic hybridization 1M targeting intellectual disability candidate gene.High resolution microarray-based comparative genomic hybridization (a-CGH) has been a powerful technical innovation in order to detect submicroscopic chromosomal aberrations related to copy number variations. By using a-CGH 180K, 1M high resolution a-CGH and quantitative PCR, we have identified 5 pathogenic intragenic copy number variations (CNVs) de novo : RUNX1T1, KIAA1468, FABP7, ZEB2 (Mowat-Wilson syndrome) and ANKRD11 (KBG syndrome). All five patients had intellectual disability (ID) and facial dysmorphism. Interestingly, a-CGH 180K has revealed a 92 kb deletion of a candidate gene KIAA1468 for West syndrome in a 3 year-old boy with severe ID and early infantile epileptic encephalopathy. Mutational screening for candidate gene KIAA1468 was performed in 35 patients with West syndrome. An intronic variant c.2761-7 T>C and a non synonymous maternally inherited variant c.3547 G>A with unknown clinical significance were identified. By using 1M high-resolution a-CGH approach in 45 patients presenting moderate to severe idiopathic ID, only one causal CNV was identified, a 28.37 kb intragenic ZEB2 deletion. Our study has confirmed the low frequency of intragenic deletion/duplication with the detection of only one chromosomal aberration (1/45). In conclusion, providing that the high frequency of intragenic point mutation, we also stressed the application of next-generation sequencing technology with 45-55% diagnostic yield in patients with idiopathic severe ID in case of no apparent CNV(s) on high-resolution a-CGH
146

Woodrow Wilson et le droit de vote des femmes aux États-Unis Entre pragmatisme et realpolitik sur la scène nationale et internationale / Woodrow Wilson and woman suffrage in the USA : pragmatism and Realpolitik on national and international stages

Delahaye, Claire 19 November 2010 (has links)
La présente thèse porte sur les motivations qui ont poussé Woodrow Wilson à s’exprimer en faveur du passage du Dix-neuvième amendement, qui a accordé le droit de vote aux femmes, alors qu’il avait refusé jusqu’en janvier 1918 de soutenir un amendement à la Constitution, car il fallait selon lui laisser aux États la liberté dans ce domaine. Ce travail est né d’une double interrogation, historiographique et méthodologique, qui rend compte de la complexité d’une approche qui se veut profondément ancrée dans une mise en contexte politique, économique, culturelle et sociale du passage de cet amendement. Cette réflexion permet de confronter deux historiographies différentes : l’histoire des femmes d’une part, et l’histoire présidentielle d’autre part. L’hypothèse de ce travail est que loin de rendre compte uniquement d’une évolution culturelle ou personnelle, ce changement de position du président est lié à divers facteurs politiques nationaux et internationaux. Les concepts de pouvoir et de politique sont au coeur de la problématique. Ils mettent en lumière en fonction du sens qui leur est attribué, des représentations différentes. Ainsi, la notion de représentation est également centrale, car elle renvoie à une appréhension des faits et du monde selon une position particulière – celle de l’historien bien sûr, mais également celle des acteurs de l’histoire – ainsi qu’au fonctionnement institutionnel de la démocratie. / The present work deals with the reasons why Woodrow Wilson decided to come out for suffrage and to support the Nineteenth Amendment, whereas he had refused to do so before January, 1918. Up until then, he was a champion of States’ rights. Spanning Wilson’s two terms, this thesis is grounded on historiographical and methodological premises originating from a political, economic, cultural and social analysis of the specific context under scrutiny. This will lead to confront two different historiographies: women’s history on the one hand, and presidential history on the other hand. This dissertation will contend that far from stemming from a cultural or personal change in Wilson’s perspective, the president’s evolution hinges upon national and international political factors. Power and politics are used as key concepts throughout the demonstration, seeing as their meaning varies substantially according to the prism of representation. As a result, the notion of representation also proves central, as it encompasses the specific viewpoints of both historians and historical protagonists on the events discussed as well as on the institutional framework of democracy.
147

A 'special relationship'? : Harold Wilson, Lyndon B. Johnson and Anglo-American relations 'at the summit', 1964-68 /

Colman, Jonathan. January 2004 (has links)
Based on a Ph.D. thesis - Liverpool Hope University College. / Includes bibliographical references and index.
148

Regards croisés sur l'espace théâtral à travers l'opéra de Pékin contemporain de Taïwan : le Roi Lear et Orlando / Crossed Perspectives on the Theatrical Space through Contemporary Peking Opera in Taiwan : king Lear and Orlando

Wang, Wan-Ju 27 January 2016 (has links)
Cette étude se propose d’examiner les questions que soulève l'opéra de Pékin contemporain de Taïwan à travers deux exemples : Le Roi Lear mis en scène par Wu Hsing-Kuo et Orlando mis en scène par Robert Wilson. Ces deux spectacles en solo sont fondés sur des textes occidentaux traduits en chinois. Pour mettre en scène ces textes traduits, Wu Hsing-Kuo et Robert Wilson ont eu recours aux conventions et au jeu de l’acteur de l’opéra de Pékin. En dépit d’éléments similaires, les textes scéniques tissés par ces deux metteurs en scène diffèrent profondément. Dans le but de trouver une manière appropriée de décrire et d’analyser ce genre de spectacles métis qui sortent de leur cadre traditionnel, tout en gardant en même temps certains traits spécifiques, nous avons commencé par creuser les conceptions qui sous-tendent la forme de l’opéra chinois. Ensuite, nous avons approfondi les questions liées à la pratique ainsi que ses rapports avec les conceptions esthétiques chinoises. Dans la dernière partie de cette étude, nous nous appuyons essentiellement sur les conceptions développées dans les deux premières parties de cette thèse plutôt que sur les discussions sur la nature du théâtre interculturel pour les chercheurs occidentaux auxquelles se sont déjà référés beaucoup de chercheurs taïwanais. À travers l’analyse des deux spectacles, nous proposons une voie différente pour discuter des représentations « interculturelles », tels que les spectacles de l’opéra de Pékin contemporain de Taïwan, qui échappent aux règles et aux conventions bien établies et qui ne peuvent être jugés selon les standards habituels. / This thesis aims to examine the questions suggested by two contemporary Peking opera productions in Taiwan: “King Lear” directed by Wu Hsing-Kuo and “Orlando” by Robert Wilson. These two adaptations are both based on Western masterpieces and each of them is performed by one trained Peking opera actor. Despite the similarities that appear in the works of the Taiwanese and the American director, the results of their experimentations on the stage differ considerably between each other. In order to find appropriate way to describe and analyze this kind of performances based on the fusion of traditional as well as foreign elements, we started by researching the conceptions which associate deeply with the form of Chinese opera. Then, we delved further into the relations between the practice of Chinese opera and the Chinese aesthetics concepts. Finally, we analyzed the two examples, not through the discussions related to “intercultural theater” developed by occidental researchers and commonly referred to Taiwanese researchers, but through the conceptions that we have developed in the last two chapters of this thesis. Through this study, we expect to propose a different way to approach the theatrical productions that broke the routine and cannot be analyzed by the standard rules.
149

Variáveis de contorno e loop de Wilson para uma classe de espaços-tempo

Santos, Edinelson Pereira dos 25 November 2011 (has links)
Submitted by Vasti Diniz (vastijpa@hotmail.com) on 2017-09-13T12:46:00Z No. of bitstreams: 1 aquivototal.pdf: 1083129 bytes, checksum: c7786a11a4d811fd716d27cf8c82948d (MD5) / Made available in DSpace on 2017-09-13T12:46:00Z (GMT). No. of bitstreams: 1 aquivototal.pdf: 1083129 bytes, checksum: c7786a11a4d811fd716d27cf8c82948d (MD5) Previous issue date: 2011-11-25 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / In thiswork,weinvestigateaclassofspace-timesbycalculatingtheloopvariables for differentcurves,intheparticularcasewherethepathstakenareclosed(circles),we obtain theso-calledholonomytransformations,fromwhichthetraceprovidesthematrix obtained intheWilsonloopgravitational.Firstwediscussthecasewherethegravita- tional fieldisgeneratedbyacylindricalshell,withoutrotation,intheapproximationof weak field.Thenwestudythespace-timesofGödelandFriedman-Robertson-Walker.We also investigatethespace-timesgeneratedbyacosmicstringwithinternalstructure.Fi- nally wediscusstheKottlerspace-timeandsomemodelsofwormholes.Tocalculatethe loop variablesweusetheperturbationexpansiontechnique,whichwecall perturbative method, andtechniquethroughtheLorentztransformationoflocalcoordinates,which we callthe exact method. Theobtainedresultsshowusthewaythesecontourvariables contain informationsrelatedtothegeometricalandtopologicalpropertiesofeachoneof these space-times. / Neste trabalho,investigamosumaclassedeespaços-tempoatravésdocálculodasva- riáveis decontornoparadiferentescurvas,quenocasoparticular,emqueoscaminhosto- mados sãofechados(círculos),obtêm-seasdenominadastransformaçõesdeholonomias, do qualotraçodamatrizobtidanosforneceoloopdeWilsongravitacional.Primeiro abordamos ocasoemqueocampogravitacionalégeradoporumacascacilíndrica,sem rotação,naaproximaçãodecampofraco.Emseguida,estudamososespaços-tempode Gödel eodeFriedman-Robertson-Walker.Tambéminvestigamosocenáriogeradopor uma cordacósmicacomestruturainterna.Porfim,abordamosoespaço-tempodeKöttle e algunsmodelosdewormholes.Paraocálculodasvariáveisdecontornoutilizamosa técnica daexpansãoperturbativa,oqualdenominamosde método perturbativo, eatéc- nica viatransformaçãodecoordenadasdeLorentzlocal,oqualdenominamosde método exato. Osresultadosnosmostramdequemaneiraessasvariáveisdecontornodetectam as característicasgeométricasetopológicasdecadaumdessesespaços-tempo.
150

Unravelling the impact of inheritance on the Wilson cycle : a combined mapping and numerical modelling approach applied to the North Atlantic rift system / Impact de l'héritage sur le Cycle de Wilson : approche cartographique et modélisation numérique appliquées à l'étude du système de rift de l'Atlantique Nord

Chenin, Pauline 22 January 2016 (has links)
Cette thèse analyse l’impact de l’héritage sur le Cycle de Wilson de l'Atlantique Nord via (1) la cartographie des structures orogéniques, et de l’architecture et l'évolution temporelle des rifts ; (2) une synthèse de l'architecture des systèmes de rift hyper-étendus ; (3) la modélisation numérique de l'effet d'un sous-plaquage magmatique sur un épisode de rift subséquent. Conclusions : (1) Les caractéristiques du rift Nord Atlantique diffèrent significativement entre les lithosphères Calédonienne et Varisque; (2) Deux types extrêmes de systèmes de rift : (a) étroits et immatures, dont la fermeture mène à une orogenèse contrôlée par des processus mécaniques ; et (b) larges et matures, dont les orogenèses sont affectées par des processus magmatiques; (3) Le sous-plaquage mafique de la croûte continentale et/ou l'existence de manteau appauvri à l'aplomb d'une ancienne zone orogénique peut empêcher la réactivation des faiblesses héritées et entraîner le boudinage de la croûte continentale. / In this thesis, I analyse the impact of inheritance on the Wilson Cycle in the North Atlantic: (1) I map the main orogenic structures, the first-order architecture of rift systems and the timing of major rifting events; (2) I synthesise the first-order architecture of rift systems; (3) I study, via numerical modelling, the impact of underplating on subsequent rifting. Conclusions: (1) The characteristics of the North Atlantic rift system vary significantly depending on whether it affects the Caledonian or Variscan orogenic lithosphere; (2) Two end-members for rift systems can be defined : (a) narrow and immature, whose closure results in orogenesis essentially controlled by mechanical processes; (b) wide and mature, whose closure and subsequent orogenesis is largely affected by magmatic processes; (3) Mafic underplating and/or mantle depletion beneath a former orogenic area may prevent the reactivation of the inherited weaknesses and may trigger the boudinage of the continental crust.

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