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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.
601

Direito internacional dos direitos humanos: uma discussão sobre a relativização da soberania face à efetivação da proteção internacional dos direitos humanos / International law of human rights: a discussion about the sovereignty relativity in face of the effectiveness of the international protection of the human rights.

Rogerio Taiar 30 June 2009 (has links)
A presente tese tem como objeto de estudo o direito internacional dos direitos humanos, trazendo como proposição a apresentação de uma nova concepção sobre a soberania. A justificativa que levou à escolha do tema e desenvolvimento do texto aflorou da verificação de diversas teorias emergentes na tentativa de melhor conceber o exercício contemporâneo da soberania estatal, diante da cada vez mais indispensável proteção dos direitos humanos no plano internacional. Esta constatação instigou o aprofundamento do assunto no sentido de contribuir para com o rompimento do dogma da soberania aliada à característica da supremacia, definição persistente que tem justificado a inefetividade do direito internacional dos direitos humanos. A pretensão foi buscar subsídios para a construção de um novo conceito de soberania estatal redesenhado a partir do paradigma da revitalização da soberania em decorrência da efetivação da proteção internacional dos direitos humanos. O texto demonstra que a tensão existente entre a efetivação concreta dos direitos humanos na esfera internacional e a suposta barreira da soberania estatal emerge da tentativa de se explicar institutos jurídicos novos com fundamentos principiológicos tradicionais que, se ao seu tempo tiveram seu valor, já não conseguem dar as respostas que as relações sociais contemporâneos, muito mais complexas, exigem. O desenvolvimento da investigação, desde seu início, norteia-se pela prévia acepção de que a soberania, fundada no princípio da igualdade soberana de todos seus membros, continua a ser identificada e exercida como poder supremo que qualifica determinado Estado diante dos demais. Entretanto, com a instituição do direito internacional dos direitos humanos, o ser humano adquiriu a condição de sujeito de direitos, não apenas nos limites territoriais de seu Estado, mas frente a toda a comunidade internacional, e, desse modo, os Estados não mais podem justificar a violação de direitos humanos em seu espaço interno sob o argumento do exercício da soberania. O indivíduo, enquanto sujeito de direitos no âmbito da ordem jurídica internacional, recebe a garantia de proteção do direito internacional público, que não conhece delimitação territorial. Nesse pensar, não se trata de uma limitação do poder soberano do Estado, mas da inserção da proteção dos direitos humanos como característica do conceito de soberania. O descortino do tema leva à constatação de que os conceitos de soberania e de direitos humanos não são antagônicos, antes disso, são fundamentos que se apresentam necessariamente interligados. Ao se enfatizar que o Estado é soberano e não há como admitir a perda de soberania sem a perda de sua identidade, ou seja, a destruição do próprio ente estatal, deseja-se inferir que a proteção da dignidade humana é função do Estado soberano traduzida no bem-estar de seus cidadãos. A violação de direitos humanos pelo Estado implica, desse modo, em afronta ao poder soberano, que não está acima da lei. É o direito internacional dos direitos humanos que assegura essas garantias fundamentais dos indivíduos. Ao final, o texto resultou estruturado em duas partes: a primeira trata do Estado soberano perante o direito internacional e dos fundamentos do processo de internacionalização dos direitos humanos; a segunda aborda o processo de internacionalização dos direitos humanos e enfrenta a questão da relativização da soberania face à efetivação da proteção internacional dos direitos humanos. / The purpose of this theses is the study of international law of human rights, proposing the presentation of a new conception of sovereignty. The justification that led to the choice of the subject and development of the text arose from the study of several theories originated from the attempt of better conceiving the contemporaneous exercise of the state sovereignty, in face of the increasingly indispensable protection to the human rights in the international sphere. This verification instigated the deepening of the subject as a contribution for the breaking of the sovereignty dogma allied to the characteristic of supremacy, a persistent definition which has justified the ineffectiveness of the international law of human rights. The intension was to seek subsidies to build a new concept of state sovereignty redrawn from the paradigm of sovereignty revitalization as result of the effectiveness of the international law of human rights protection. The text demonstrates that the tension existing between the concrete effectiveness of human rights in the international sphere and the presumed barrier of the state sovereignty arises from the attempt to explain new legal institutes grounded on traditional logical principles which, at their time were valuable, but can not supply the answers required by the much more complex contemporaneous social relations. The investigation development, from its beginning, is grounded on the previous acceptance that sovereignty, based on the sovereign equality principle of all its members, continuous to be identified and exercised as supreme power which qualifies a certain Estate before the others. However, with the institution of the international law of human rights, the human being has acquired the condition of subject of rights, not only in his Estate territorial limits, but before the whole international community, and thus, the Estates may not justify the violation of the human rights in their internal space, under the argument of the exercise of sovereignty. The individual, as subject of rights in the ambit of the international legal systems, receives the guarantee of protection of the public international law, which is not submitted to territorial delimitation. In the same point of view, it is not a matter of limitation of the Estate sovereign power, but of the insertion of human rights protection as characteristic of the sovereignty concept. The exposition of the theme leads to the verification that the sovereignty and human rights concepts are not antagonist on the contrary they are basis which present themselves necessarily interconnected. When we emphasize that the Estate is sovereign there is no way to admit the loss of sovereignty without the loss of its identity, that is, the destruction of the own state entity, we intend to infer the human dignity protection is the sovereign Estate function translated into their citizens welfare. The human rights violation by the Estate implies, therefore, in affront to the sovereign power, which is not above the law. It is the international law of human rights that ensures these individuals\'s fundamental guarantees. Finally, the text resulted structured in two parts: The first deals with the sovereign Estate before international law and the basis of the internationalization process of human rights; the second approaches the internationalization process of human rights and faces the issue of sovereignty relativity in face of the effectiveness of the international protection of the human rights.
602

Promotion and Protection of the Rights of the Children in Street Situations in Bankok, Thailand

Wandee, Siripan January 2013 (has links)
This thesis aims at describing how the Convention on the Rights of the Child (CRC) is reflected in the overall operation of the Non-Governmental Organizations and government agencies working with children in street situations in Bangkok, Thailand. It describes children in different street situations in Bangkok; intervention approaches and working methods of the agencies that provide the services for them as well as similarities and differences in each group of the children. As the CRC sets a framework for interventions concerning children, it was interesting to explore whether the practitioners in Bangkok apply the convention in their interventions. This is a descriptive research applying the qualitative data collection methods by which literature review was conducted and semi-structure interviews were carried out according to a written interview guide with professionals represented NGOs and government agencies who directly work with children in street situations, followed by a deductive content analysis of the transcribed interview texts. The field observations were conducted in different areas of Bangkok in order to understand the working environments of the organizations and the conditions of the children. The findings revealfour groups of children in street situations in Bangkok with one being migrants. Their dwelling areas are determined by its socio-economic activities while the livelihoods of each group of children are different. In order to respond to their situations and promote as well as protect their rights, the NGOs and government agencies coordinate in a Network for Street Children in responding to their situations through a Street Teacher Approach. They conduct street/community outreach and responsive actions aiming at protecting, advocating for rights to education, eliminating child labor exploitation, being their significant other,facilitating durable repatriation for migrant children in street situations etc. The rights concept is universal but the childhood concept is culturally relative. The actors in Bangkok bridge the two concepts by taking the situation and the best interest of the child into consideration: they prioritize the child’s well-being which entails rights protection and promotion.
603

Contraintes sur les violations à la symétrie de Lorentz par analyse des données de télémétrie laser Lune / Constaints on Lorentz symmetry violations using lunar laser ranging observations

Bourgoin, Adrien 19 December 2016 (has links)
La relativité générale (RG) et le modèle standard des particules permettent de comprendre les quatre interactions fondamentales de la nature. La formulation d'une théorie quantique de la gravitation permettrait d'unifier ces deux tenants de la physique moderne. D'après les grandes théories d'unification, une telle union est possible moyennant la brisure de certaines symétries fondamentales apparaissant à la fois en RG et dans le modèle standard telle la symétrie de Lorentz. Les violations de la symétrie de Lorentz peuvent être paramétrées dans tous les domaines de la Physique par une théorie effective du champ appelée extension du modèle standard (SME). Une violation au principe d'invariance locale de Lorentz dans le secteur gravitationnel serait supposée engendrer des perturbations dans la dynamique orbitale des corps présents dans le système solaire, notamment la Lune. Ainsi, à partir des données extrêmement précises de télémétrie laser, l'orbite lunaire peut être minutieusement analysée afin de débusquer d'éventuelles anomalies dans son mouvement. Dans cette optique, ELPN (Ephéméride Lunaire Parisienne Numérique), une nouvelle éphéméride lunaire intégrée dans le cadre du formalisme SME a été développée durant la thèse. ELPN fournit les solutions au problème lunaire sous la forme de séries temporelles datées en temps dynamique barycentrique (TDB). Parmi les solutions numériquement intégrées, mentionnons la position et la vitesse du vecteur barycentrique Terre-Lune, les angles de librations lunaires, la différence entre le temps terrestre et le TDB, ainsi que l'ensemble des dérivées partielles intégrées depuis l'équation aux variations. Les prédictions de l'éphéméride ont été utilisées afin de réduire les observations lunar laser ranging (LLR). Dans le cadre de la RG, la dispersion des résidus s'est avérée en accord avec les dispersions calculées à partir des éphémérides INPOP13b et DE430. Dans le cadre du SME minimal, l'analyse des données LLR a permis de contraindre toutes violations à l'invariance locale de Lorentz. Une grande attention a été portée à l'analyse des incertitudes afin de fournir des contraintes réalistes. Ainsi, dans un premier temps, les combinaisons linéaires de coefficients SME ont été isolées puis ajustées aux observations. Puis, dans un second temps, les incertitudes réalistes ont été déterminées par une méthode de ré-échantillonnage. L'analyse des données de télémétrie laser Lune n'a pas permis de révéler de violations au principe d'invariance locale de Lorentz agissant au niveau de l'orbite lunaire. Les prédictions de la RG ont donc été validées avec des précisions absolues allant de 10-9 à 10-12. / General Relativity (GR) and the standard model of particle physics provide a comprehensive description of the four interactions of nature. A quantum gravity theory is expected to merge these two pillars of modern physics. From unification theories, such a combination would lead to a breaking of fundamental symmetry appearing in both GR and the standard model of particle physics as the Lorentz symmetry. Lorentz symmetry violations in all fields of physics can be parametrized by an effective field theory framework called the standard-model extension (SME). Local Lorentz Invariance violations in the gravitational sector should impact the orbital motion of bodies inside the solar system, such as the Moon. Thus, the accurate lunar laser ranging (LLR) data can be analyzed in order to study precisely the lunar motion to look for irregularities. For this purpose, ELPN (Ephéméride Lunaire Parisienne Numérique), a new lunar ephemeris has been integrated in the SME framework. This new numerical solution of the lunar motion provides time series dated in temps dynamique barycentrique (TDB). Among that series, we mention the barycentric position and velocity of the Earth-Moon vector, the lunar libration angles, the time scale difference between the terrestrial time and TDB and partial derivatives integrated from variational equations. ELPN predictions have been used to analyzed LLR observations. In the GR framework, the residuals standard deviations has turned out to be the same order of magnitude compare to those of INPOP13b and DE430 ephemerides. In the framework of the minimal SME, LLR data analysis provided constraints on local Lorentz invariance violations. Spetial attention was paid to analyze uncertainties to provide the most realistic constraints. Therefore, in a first place, linear combinations of SME coefficients have been derived and fitted to LLR observations. In a second time, realistic uncertainties have been determined with a resampling method. LLR data analysis did not reveal local Lorentz invariance violations arising on the lunar orbit. Therefore, GR predictions are recovered with absolute precisions of the order of 10-9 to 10-12.
604

Gravitational Waves and the Stability of Binary Systems

Pereira, Rheymisson January 2017 (has links)
This project contains an exposition of the basics of General Relativity up to the study of Gravitational Waves. The goal is to apply this theory to understand binary systems, how they generate gravitational waves and the energy they lose in doing so. Gravitational waves have been a topic of interest in relativity ever since their theoretical prediction in 1916. Now the interest in the subject has been renewed since LIGO's announcement of the first detection of gravitational waves, proving once again the power of General Relativity. This topic is very promising because of its implications in the future of astronomy and cosmology as a new method to obtain information about our universe.
605

Magnetic resonance properties of metal-containing nanosystems

Roukala, J. (Juho) 03 October 2016 (has links)
Abstract This thesis presents computational first-principles investigations of nuclear magnetic resonance (NMR) parameters in metal-containing nanosystems. Special attention is paid to the relativistic effects observed in the vicinity of heavy elements. Small transition metal complexes are used to assess the feasibility of a quasirelativistic density functional theory (DFT) approach for calculating nuclear magnetic shielding tensors of increasingly heavy metal nuclei, followed by applications of the concept to larger systems. Nuclear magnetic shielding constants, shielding anisotropies, and chemical shifts with respect to metal ions are calculated in dimethyl and water complexes of the group-12 transition metals 67Zn, 111/113Cd, and 199/201Hg, using Hartree–Fock and DFT methods with relativistic corrections from the Breit–Pauli Perturbation Theory (BPPT). Four-component relativistic Dirac–Hartree–Fock and correlated, nonrelativistic ab initio calculations are used to benchmark the BPPT and DFT methods, respectively. The DFT/BPPT approach, combined with Monte Carlo simulations at finite temperatures, is subsequently used to calculate the chemical shift of a guest 129Xe inside a tetrahedral, iron-based cage. Complementing experiments, the encapsulation of xenon is verified, and empirically elusive details are revealed about the guest dynamics. Finally, the full shielding tensors of 31P and 195Pt and the indirect spin–spin coupling constants between the two nuclei are studied in five crystalline platinum(II) dialkyldithiophosphato complexes, concentrating on the solid-state chemical shift anisotropy and asymmetry parameters of phosphorus and platinum. The NMR parameters are calculated using DFT and the two-component zerothorder regular approximation (ZORA) for relativistic effects, combining molecular and solid-state models to incorporate indispensable contributions due to spin–orbit and crystal lattice corrections for the shielding tensors. Four-component matrix-Dirac–Kohn–Sham shielding calculations are used to benchmark the ZORA method. Qualitative, in cases nearly quantitative agreement is obtained with experiments, allowing the validation of the X-ray structures of the complexes, as well as a deeper analysis of the differences between them, including the major contributions to the NMR parameters. The results presented here demonstrate that computational NMR, a branch of relativistic quantum chemistry, is applicable and useful in studying nanoscale systems containing heavy elements, such as transition metals. Approximations are necessary to enable the treatment of large and complex targets, but sufficient accuracy is achieved for supplementing experiments with reliable and useful data that provides additional insight and analysis possibilities.
606

[en] RIGHT TO HEALTH IN BRAZIL: THE VERIFIED EXCESSES AND THE NECESSITY TO ESTABLISH LIMITS ON THE MATERIAL BENEFITS OF THE STATE / [pt] DIREITO À SAÚDE NO BRASIL: DOS EXCESSOS VERIFICADOS E DA NECESSIDADE DE ESTABELECIMENTO DE LIMITES ÀS PRESTAÇÕES MATERIAIS DO ESTADO

MARCIO VILLELA MACHADO 24 March 2011 (has links)
[pt] O clamor pela ampla realização material dos direitos sociais no Brasil atingiu elevados níveis neste início de século XXI. Uma vez reconhecidos formalmente pela Constituição Federal de 1988 como direitos fundamentais e, por isso mesmo, conformadores do núcleo base de nosso ordenamento jurídico, os direitos sociais ultrapassaram o nível da discussão política, constituindo objeto recorrente das lides judiciais. Cada vez mais o Judiciário passou a intervir no processo de implementação desta espécie de direitos, abandonando uma postura eminentemente passiva e formal em favor da crescente intervenção na qualidade e no próprio mérito das políticas públicas envolvidas. Este último fenômeno traz diversas conseqüências aos universos fático e jurídico, algumas das quais positivas, outras negativas, sendo certo que a presente dissertação foca, com especial atenção, as desta segunda espécie. Para tanto, opta-se pela análise do direito social à saúde, buscando-se identificar os principais problemas que se podem extrair de uma judicialização que, em diversos momentos, pode ser tida como excessiva e assistemática. Por fim, pugna-se pela necessidade de estabelecimento de limites à atuação judicial que se queira legítima, os quais devem ser construídos democrática e dogmaticamente a partir de parâmetros que tomem em séria consideração a relatividade dos direitos, seus custos, o mínimo existencial, o respeito às escolhas administrativas constitucionais e a necessidade de uma adequada ponderação de interesses, sem descurar da busca da maior efetivação possível das normas constitucionais. / [en] The clamor for ample material realization of social rights in Brazil has reached high levels at the beginning of the XXI century. Once formally approved by the 1988 Federal Constitution as fundamental rights and, therefore, compliance of the fundamental core of our legal system, social rights exceeded the level of political discussion, constituting common object of lawsuits. Increasingly, the Judiciary has to intervene in the process of implementing this kind of rights, leaving an essentially passive and formal stance in favor of increasing intervention in the quality and merit of public policies involved. This phenomenon brings several consequences for legal and factual universes, some of them positive, some negative, being sure that this paper focuses, with special attention, to this second kind. For this, the option is by analysis to the social right to health, seeking to identify major problems that can be extracted from a judicialization that, at various times, can be regarded as excessive and unsystematic. Finally, advocates by the need to establish limits on judicial action that intended to be legitimate, which must be built democratically, dogmatically and based on parameters that take into serious consideration the relativity of rights, their costs, the existential minimum, the respect for constitutional administrative choices and necessity of appropriate balancing of interests, without neglecting the search of greater possible effectiveness of constitutional rules.
607

Redshift-space distortions as a probe of dark energy

Gouws, Liesbeth-Helena January 2014 (has links)
>Magister Scientiae - MSc / We begin by finding a system of differential equations for the background and linearly perturbed variables in the standard, ɅCDM model, using the Einstein Field Equations, and then solving these numerically. Later, we extend this to dynamical dark energy models parameterised by an equation of state, w, and a rest frame speed of sound, cs. We pay special attention to the large-scale behaviour of Δm, the gauge invariant, commoving matter density, since the approximation Δm ≃ δm, where δm is the longitudinal gauge matter density, is more commonly used, but breaks down at large scales. We show how the background is affected by w only, so measurements of perturbations are required to constrain cs. We examine how the accelerated expansion of the universe, caused by dark energy, slows down the growth rate of matter. We then show the matter power spectrum is not in itself useful for constraining dark energy models, but how redshift-space distortions can be used to extract the growth rate from the galaxy power spectrum, and hence how redshift-space power spectra can be used to constrain different dark energy models. We find that on small scales, the growth rate is more dependent on w, while on large scales, it depends more on cs.
608

Les valeurs archétypales en français. Une perspective néo-saussurienne de la valeur linguistique / The archetypal values in the French Language. A neo-Saussurean perspective of the linguistic value

Gurgakova-Chantova, Yasena 07 January 2017 (has links)
La thèse consiste en une mise en rapport aux plans notionnel et empirique de la valeur saussurienne et de l’archétype jungien. L’intérêt d’établir une telle corrélation est d’étudier les valeurs archétypales dans une perspective néo-saussurienne. Pour ce faire, la notion de valeur dans les manuscrits saussuriens De l'essence double du langage est traitée dans son aspect double, différentiel et réflexif à la fois : cela permet aux différences articulées de se charger d’une expression métalinguistique. Les valeurs archétypales héritent alors de cette propriété double. La notion de valeur archétypale entre ainsi en interdépendance avec d’autres notions : celles de différenciation, de postélaboration, d’association, de catégorie, de niveau. Les valeurs archétypales héritent de deux particularités des archétypes jungiens : elles se présentent comme des conventions collectives sociales et comme des élaborations langagières systémiques à la fois. Pour assurer le cadre méthodologique de l’analyse, une division aristotélicienne est appliquée. Cela permet d’abord aux valeurs de s’articuler en valeurs génériques, spécifiques et numériques. Cela permet ensuite aux qualités archétypales d’assurer les différenciations. Dans la mesure où valeur et sens sont inséparables, cette étude des valeurs archétypales est aussi une étude sémantique qui se donne pour l’objectif d’étudier les représentations qualitatives du sens. / The thesis represents empirical and notional relationships between Saussure’s values and Jung’s archetypes. The aim is to study the archetypal values in a neo-Saussurean perspective. In order to achieve this aim, the notion of value in Saussure’s On the dual essence of language is presented as a dual phenomenon with a differential nature and a reflexive meta-linguistic nature at the same time. Thus, the archetypal values inherit this dual aspect. The notion of archetypal value appears as a complex one that enters interdependence with other notions, (differentiation and post-elaboration, association and category, generic, specific and numeric identities and levels). The archetypal values inherit two particular properties from Jung’s archetype. Therefore, the archetypal values appear as social and collective conventions, as well as language system elaborations. To provide relevant methodological framework for the analysis, the Aristotelian division is applied. In this way the values are generically, specifically and numerically differentiated. Then this method allows archetypal qualities to make the differentiation of the three types of values. Since the value and the meaning are inseparable, this study of the archetypal values also has a semantic aspect and aims to study the qualitative representations of the meaning.
609

Gravitational waves : understanding black holes

Moore, Christopher James January 2016 (has links)
This thesis concerns the use of observations of gravitational waves as tools for astronomy and fundamental physics. Gravitational waves are small ripples in spacetime produced by rapidly accelerating masses; their existence has been predicted for almost 100 years, but the first direct evidence of their existence came only very recently with the announcement in February 2016 of the detection by the LIGO and VIRGO collaborations. Part I of this thesis presents an introduction to gravitational wave astronomy, including a detailed discussion of a wide range of gravitational wave sources, their signal morphologies, and the experimental detectors used to observe them. Part II of this thesis concerns a particular data analysis problem which often arises when trying to infer the source properties from a gravitational wave observation. The use of an inaccurate signal model can cause significant systematic errors in the inferred source parameters. The work in this section concerns a proposed technique, called the Gaussian process marginalised likelihood, for overcoming this problem. Part III of this thesis concerns the possibility of testing if the gravitational field around an astrophysical black hole conforms to the predictions of general relativity and the cosmic censorship hypothesis. It is expected that the gravitational field should be well described by the famous Kerr solution. Two approaches for testing this hypothesis are considered; one using X-ray observations and one using gravitational waves. The results from these two approaches are compared and contrasted. Finally, the conclusions and a discussion of future prospects are presented in part IV of this thesis.
610

Exploring gravity

Berry, Christopher P. L. January 2014 (has links)
Gravitation is the dominant influence in most astrophysical interactions. Weak-field interactions have been extensively studied, but the strong-field regime remains largely unexplored. Gravitational waves (GWs) are an excellent means of accessing strong-field regions. We investigate what we can learn about both astrophysics and gravitation from strong-field tests and, in particular, GWs; we focus upon extreme-mass-ratio (EMR) systems where a small body orbits a much more massive one. EMR bursts, a particular class of GW signals, could be used to determine the properties of massive black holes (MBHs). They could be detectable with a space-borne interferometer from many nearby galaxies, as well as the Galactic centre. Bursts could provide insightful constraints on the MBHs' parameters. These could elucidate the formation history of the MBHs and, by association, their host galaxies. The Galactic centre is the most promising source. Its event rate is determined by the stellar distribution surrounding the MBH; the rate is not high, but we still expect to gain useful astronomical information from bursts. Strong-field tests may reveal deviations from general relativity (GR). We calculate modifications that could be observed assuming metric f(R)-gravity as an effective alternative theory. Gravitational radiation is modified, as are planetary precession rates. Both give a means of testing GR. However, existing laboratory measurements already place tighter constraints on f(R)-gravity, unless there exists a screening effect, such as the chameleon mechanism, which suppresses modifications on small scales. To make precision measurements of astrophysical systems or place exacting bounds on deviations from GR, we must have accurate GW templates. Transient resonances are currently not included in the prescription for generating EMR inspiral waveforms. Their effects can be estimated from asymptotic expansions of the evolving orbital parameters. The quantitative impact on parameter estimation has yet to be calculated, but it appears that it shall be necessary to incorporate resonances when creating inspiral waveforms.

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