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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.
51

An optical readout for the LISA gravitational reference sensor

Schuldt, Thilo 06 December 2010 (has links)
Der weltraumgestützte Gravitationswellendetektor LISA (Laser Interferometer Space Antenna) besteht aus drei identischen Satelliten an Bord derer sich jeweils zwei frei schwebende Testmassen befinden. Die Lage der einzelnen Testmassen in Bezug auf die zugehörige optische Bank muss mit einer Genauigkeit besser 1 pm/sqrt(Hz) in der Abstands- und besser 10 nrad/sqrt(Hz) in der Winkelmessung erfolgen. In der vorliegenden Arbeit wird ein kompaktes optisches Auslesesystem präsentiert, welches als Prototyp für diese Abstands- und Winkelmetrologie dient. Das dafür entwickelte polarisierende Heterodyn-Interferometer mit räumlich getrennten Frequenzen basiert auf einem hoch-symmetrischen Design, bei dem zur optimalen Gleichtakt-Unterdrückung Mess- und Referenzarm die gleiche Polarisation und Frequenz sowie annähernd gleiche optische Pfade haben. Für die Winkelmessung wird die Methode der differentiellen Wellenfrontmessung eingesetzt. In einem ersten Prototyp-Aufbau wird ein Rauschniveau von weniger als 100 pm/sqrt(Hz) in der Translations- und von weniger als 100 nrad/sqrt(Hz) in der Winkelmessung (beides für Frequenzen oberhalb 0.1 Hz) demonstriert. In einem zweiten Prototyp-Aufbau werden zusätzlich eine Intensitätsstabilisierung und ein Phasenlock der beiden Frequenzen implementiert. Die analoge Phasenmessung ist durch eine digitale, FPGA basierte, ersetzt. Mit diesem Aufbau wird ein Rauschen kleiner 5 pm/sqrt(Hz) in der Translationsmessung und kleiner 10 nrad/sqrt(Hz) in der Winkelmessung, beides für Frequenzen größer 0.01 Hz, erreicht. Eine Rausch-Analyse wurde durchgeführt und die Nichtlinearitäten des Interferometers bestimmt. Das Interferometer wurde im Hinblick auf die LISA Mission entwickelt, findet seine Anwendung aber auch bei der Charakterisierung der dimensionalen Stabilität von ultra-stabilen Materialien sowie in der optischen Profilometrie. Die Adaptierung des Interferometers dazu sowie erste Resultate zu beiden Anwendungen werden in dieser Arbeit präsentiert. / The space-based gravitational wave detector LISA (Laser Interferometer Space Antenna) consists of three identical satellites. Each satellite accommodates two free-flying proof masses whose distance and tilt with respect to its corresponding optical bench must be measured with at least 1 pm/sqrt(Hz) sensitivity in translation and at least 10 nrad/sqrt(Hz) sensitivity in tilt measurement. In this thesis, a compact optical readout system is presented, which serves as a prototype for the LISA proof mass attitude metrology. We developed a polarizing heterodyne interferometer with spatially separated frequencies. For optimum common mode rejection, it is based on a highly symmetric design, where measurement and reference beam have the same frequency and polarization, and similar optical pathlengths. The method of differential wavefront sensing (DWS) is utilized for the tilt measurement. In a first prototype setup noise levels below 100 pm/sqrt(Hz) in translation and below 100 nrad/sqrt(Hz) in tilt measurement (both for frequencies above 0.1 Hz) are achieved. A second prototype was developed with additional intensity stabilization and phaselock of the two heterodyne frequencies. The analog phase measurement is replaced by a digital one, based on a Field Programmable Gate Array (FPGA). With this setup, noise levels below 5 pm/sqrt(Hz) in translation measurement and below 10 nrad/sqrt(Hz) in tilt measurement, both for frequencies above 0.01Hz, are demonstrated. A noise analysis was carried out and the nonlinearities of the interferometer were measured. The interferometer was developed for the LISA mission, but it also finds its application in characterizing the dimensional stability of ultra-stable materials such as carbon-fiber reinforced plastic (CFRP) and in optical profilometry. The adaptation of the interferometer and first results in both applications are presented in this work.
52

Participatory theological bioethics of Lisa Sowle Cahill and its relevance to end-of-life care in Hong Kong.

January 2010 (has links)
Law, Wai Yan. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2010. / Includes bibliographical references (leaves 83-92). / Abstracts in English and Chinese. / ABSTRACT --- p.I / 論文摘要 --- p.II / TABLE OF CONTENTS --- p.III / Chapter CHAPTER 1 --- INTRODUCTION --- p.1 / Chapter CHAPTER 2 --- LISA SOWLE CAHILL´ةS THEOLOGICAL BACKGROUND --- p.5 / Chapter 2.1 --- Introduction --- p.5 / Chapter 2.2 --- Cahill´ةs theological approach to Christian Ethics --- p.5 / Chapter 2.2.1 --- Catholicism --- p.6 / Chapter 2.2.2 --- Feminism --- p.9 / Chapter 2.2.3 --- Theological Anthropology --- p.16 / Chapter 2.3 --- Moral Methodology --- p.21 / Chapter 2.3.1 --- The Bible --- p.21 / Chapter 2.3.2 --- Tradition --- p.22 / Chapter 2.3.3 --- Normative Accounts of the Human --- p.24 / Chapter 2.3.4 --- Descriptive Accounts of the Human --- p.25 / Chapter 2.4 --- Conclusion --- p.26 / Chapter CHAPTER 3 --- LISA SOWLE CAHILL´ةS PARTICIPATORY THEOLOGICAL BIOETHICS --- p.28 / Chapter 3.1 --- Introduction --- p.28 / Chapter 3.2 --- Cahill´ةs Participatory Theological Bioethics --- p.28 / Chapter 3.2.1 --- Principle of Analysis --- p.29 / Chapter 3.2.1.1 --- Ordinary and Extraordinary means of life support --- p.30 / Chapter 3.2.1.2 --- Principle of double effect --- p.31 / Chapter 3.2.2 --- The common good and bioethics --- p.34 / Chapter 3.2.3 --- Theological bioethics and Social Transformation --- p.38 / Chapter 3.2.4 --- Summary --- p.40 / Chapter 3.3 --- Evaluation and Dialogue with Cahill´ةs Participatory Theological Bioethics --- p.41 / Chapter 3.3.1 --- Catholicism --- p.41 / Chapter 3.3.2 --- Feminism --- p.42 / Chapter 3.3.3 --- Common Good --- p.44 / Chapter 3.4 --- Conclusion --- p.46 / Chapter CHAPTER 4 --- END-OF-LIFE CARE IN HONG KONG --- p.47 / Chapter 4.1 --- Introduction --- p.47 / Chapter 4.2 --- End-of-life care in Hong Kong --- p.48 / Chapter 4.2.1 --- Decline and dying in Hong Kong --- p.48 / Chapter 4.2.2 --- Ethical judgments by the health care professions --- p.50 / Chapter 4.2.3 --- Advance directive --- p.54 / Chapter 4.2.4 --- Patients or family´ةs participation --- p.54 / Chapter 4.2.5 --- Chinese culture and Bioethics --- p.56 / Chapter 4.3 --- Christianity engagement in the end-of-life care in Hong Kong --- p.59 / Chapter 4.3.1 --- Christian communities --- p.59 / Chapter 4.3.2 --- Theology bioethics --- p.60 / Chapter 4.4 --- Conclusion --- p.61 / Chapter CHAPTER 5 --- PARTICIPATORY THEOLOGICAL BIOETHICS IN HONG KONG --- p.63 / Chapter 5.1 --- Introduction --- p.63 / Chapter 5.2 --- The significance and relevance of Participatory Theological Bioethics --- p.63 / Chapter 5.2.1 --- Both individual and social ethics --- p.64 / Chapter 5.2.1.1 --- Who is/are the poor? --- p.64 / Chapter 5.2.1.2 --- Inequalities in access to end-of-life care --- p.66 / Chapter 5.2.1.3 --- Medical paternalism --- p.71 / Chapter 5.2.2 --- Transcendent meanings of life --- p.73 / Chapter 5.3 --- INTERCULTURAL DIALOGUE OF PARTICIPATORY THEOLOGICAL BIOETHICS --- p.74 / Chapter 5.3.1 --- Familial relationship as a starting point --- p.75 / Chapter 5.3.2 --- Interpretation of ´بParticipatory´ة --- p.76 / Chapter 5.4 --- Conclusion --- p.80 / Chapter CHAPTER 6 --- CONCLUSION --- p.81 / BIBLIOGRAPHY --- p.83
53

A influência da topografia na identificação de centralidades urbanas : estudo de caso no município de Barra do Piraí, Rio de Janeiro /

Fontoura Júnior, Caio Flávio Martinez January 2020 (has links)
Orientador: Edmur Azevedo Pugliesi / Resumo: A expansão urbana vem formando aglomerados populacionais desordenados, o que causa problemas para a administração municipal. A fim de reduzir este tipo de problema, uma das maneiras de reorganizar o território é o policentrismo, conceito que vem sendo aplicado em grande parte da área urbana de diversos países como Estados Unidos, China e países da Europa. O policentrismo pode ser entendido como uma área urbana com pluralidade de centros urbanos. Há duas abordagens para identificar possíveis centralidades: a morfológica e a funcional. Além disso, não foi encontrado quaisquer resultados de trabalhos científicos que tenham utilizado a variável inclinação do relevo nas análises de identificação de centralidades urbanas. Dessa maneira, a variável declividade pode ser um fator impactante na determinação de uma centralidade ou núcleo urbano para localidades brasileiras e que tenha característica similares da área de estudo. O objetivo desse trabalho propõe um estudo para a identificação de centralidades ou a possibilidade de identificar novos núcleos urbanos, por meio da avaliação da morfologia do terreno na formação de subcentros no município de Barra do Piraí no Estado do Rio de Janeiro, Brasil. Foram adquiridos arquivos vetoriais da base cartográfica do IBGE 2018, que posteriormente foram tratados e analisados. A fim de compreender a identificação de centralidades foram realizadas análises com a utilização da abordagem morfológica: Componentes Principais (CP), o Índice Global de ... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The urban expansion has been creating disorderly population agglomerations, which causes problems for the municipal administration. In order to reduce this type of problem, one of the ways to reorganize the territory is polycentrism, a concept that has been applied in a large part of the urban area of several countries such as the United States, China, and countries in Europe. Polycentrism can be understood as an urban area with a plurality of urban centers. There are two approaches to identify possible centralities: the morphological and the functional. In addition, no results were found from scientific studies that have used the variable slope of relief in the analysis of identification of urban centralities. Thus, the slope variable can be an impacting factor in determining a centrality or urban nucleus for Brazilian locations and which has similar characteristics of the study area. The aim of this work proposes a study for the identification of centralities or the possibility of identifying new urban centers, through the evaluation of the morphology of the land in the formation of sub-centers in the municipality of Barra do Piraí in the State of Rio de Janeiro, Brazil. Vector files were acquired from the IBGE 2018 cartographic base, which were later treated and analyzed. To understand the identification of centralities, analyzes were performed using the morphological approach: Principal Components (CP), the Moran Global Index, the Local Indicator of Spatial Association - ... (Complete abstract click electronic access below) / Mestre
54

"Det är fruktansvärt det som hänt. Jag bor alldeles här borta" : En kvalitativ studie om mordet på Lisa Holm i Aftonbladet och Skaraborgs Allehanda

Karlsson, Amanda, Rockler, Emelie January 2016 (has links)
The aim of the study was to examine how two newspapers covered the murder of Lisa Holm. The questions examined were: How are Lisa Holm, the perpetrator and the local community represented and what are the differences and similarities between the local news paper, Skaraborgs Allehanda, and the tabloid, Aftonbladet?  We made a discourse analysis of 13 news articles from six different time periodes. The result shows that the victim is represented as an innocent, young girl who is described as good, happy and perfect. The local news paper represents her as a part of the local community and the tabloid is highlighting attributes that people can identify with. The perpetrator is represented as an evil and callous foreign in both newspapers, but Aftonbladet also represents him as a usual person. Skaraborgs Allehanda focus on his guilt of the murder. The local community is represented as a certain group with common emotions who is also the light in the darkness. They share the grief and help each other to process it. The tabloid focus on highlighting the geografic closeness between the people in the articles and the murder. In Aftonbladet, the local community is also described as a dangerous place. Our study shows that the distance between the newspaper and the crime scene affect the representations of the people involved.
55

Fallet Lisa : En kvalitativ studie av tre svenska tidningars rapportering av en stor dramatisk händelse.

Fogelqvist, Emelie, Stjärne, Kalle January 2016 (has links)
Problemformulering och syfte: Den 17-åriga flickan Lisa Holms försvinnande den 7 juni 2015 var ett fall som gavs enorm publicitet i svensk media och denna nyhetshändelse engagerade hela Sverige. Den stora uppmärksamhet som dramatiska händelser väcker i svensk media kan förklaras av att en händelses sensationella karaktär har inverkan på nyhetsvärdet. Konkurrensen mellan medier och jakten efter att fånga publikens uppmärksamhet gör att de använder sig av olika journalistiska grepp och berättartekniker när de rapporterar om stora dramatiska händelser. Syftet med den här studien har varit att, utifrån fallet Lisa Holm, se hur tre svenska tidningar använder sig av medielogik, samt hur de gestaltar och berättar narrativt om en dramatisk händelse i nyhetsrapporteringen. Metod och material: Med narrativ innehållsanalys och teorierna medielogik, gestaltning och framing narrative och våra frågeställningar har vi undersökt nyhetsrapporteringen om fallet Lisa Holm i tidningarna Nya Lidköpings-tidningen, Aftonbladet och Dagens Nyheter från 9 juni till 15 juni 2015. Till hjälp i arbetet att analysera artiklarna från respektive tidning har vi använt oss av en frågemall från Anna Johanssons bok Narrativ teori och metod – med livsberättelsen i fokus. Huvudresultat: Medielogikens journalistiska grepp är mest framträdande i Aftonbladet. Alla tre tidningarna har dock ett stort fokus på personliga berättelser. Det finns skillnader i hur Aftonbladet, NLT och DN väljer att gestalta fallet, men berättelsens poäng blir densamma för alla tre tidningar. Narrativt berättande och dramaturgi ser vi exempel på genom hur de tre tidningarna presenterar berättelsens händelseförlopp och uppbyggnad.
56

Fem and Funny: Three Women Who Changed the Face of Stand-Up Comedy

Blackburn, Rachel Eliza 10 April 2013 (has links)
Phyllis Diller, Joan Rivers, and Lisa Lampanelli as performers demonstrate an arc of evolving female empowerment in the world of stand-up comedy. In this thesis I shall study the development of each woman’s career by examining her material, progression of her comic persona, and relationship to women’s gender roles, both personally and professionally. While there are many other female comics who contribute to the story of women’s stand-up comedy in the contemporary period (in particular, Moms Mabley and Elayne Boosler), Diller, Rivers and Lampanelli each represent a distinct shift in how their persona combined with subject matter, allowing women to break new barriers in terms of comic performance. Diller’s comedy carved a space for Rivers’, and Rivers’ comedy carved a space for the likes of Lampanelli. In viewing the trajectory of their effect on comedy as a whole, we can see how each woman asserted herself in stand-up performance, and forever changed the nature of who was allowed to get up on stage, and also, what they were allowed to say by their audiences. To quote Joan Rivers, “First there was a gasp…and then there was a laugh” (Rivers “Piece of Work”).
57

Análise do efeito da retangularidade dos pilares nos critérios normativos de dimensionamento à punção em lajes lisas de concreto armado / Analysis of the effect of rectangularity rate of the columns in normative criteria for sizing punching in reinforced concrete flat slabs

PAIVA, Odilson da Silva de 22 October 2013 (has links)
Submitted by Cássio da Cruz Nogueira (cassionogueirakk@gmail.com) on 2017-03-16T13:05:15Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_AnaliseEfeitoRetangularidade.pdf: 2760909 bytes, checksum: f7553da9a0e039bc587df51a11724a63 (MD5) / Approved for entry into archive by Edisangela Bastos (edisangela@ufpa.br) on 2017-03-20T16:05:13Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_AnaliseEfeitoRetangularidade.pdf: 2760909 bytes, checksum: f7553da9a0e039bc587df51a11724a63 (MD5) / Made available in DSpace on 2017-03-20T16:05:13Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_AnaliseEfeitoRetangularidade.pdf: 2760909 bytes, checksum: f7553da9a0e039bc587df51a11724a63 (MD5) Previous issue date: 2013-10-22 / O sistema com lajes lisas que não dependem de vigamento apresenta sua resistência limitada pela resistência à punção, visto que a região da ligação laje-pilar é critica devido às cargas concentradas em torno dos pilares. A geometria dos pilares é um dos fatores de influência na distribuição de tensões da região de ligação laje-pilar afetando por sua vez no dimensionamento à punção de lajes lisas. Neste estudo foi realizada uma profunda coleta de dados que visa reunir em um único trabalho a maior quantidade possível de lajes englobando os maiores nomes no estudo de punção, nacionais e internacionais, apresentando um total de 131 lajes. Foi feita uma comparação entre os principais códigos normativos usados atualmente, Eurocode 2 (2004), NBR 6118 (2007), ACI 318 (2008) e CEB-FIP (2010). Os resultados experimentais foram confrontados com os obtidos teoricamente levando em consideração os efeitos do índice de retângularidade em lajes lisas de concreto armado sem armaduras de cisalhamento verificando a adequação, confiabilidade de cada recomendação, analisando as particularidades das regras e diretrizes de cada critério normativo. / The system with flat slabs that do not depend on framework of beam has limited resistance by the resistance to punching shear, since the region of the slab-column is critical due to concentrated loads around the columns. The geometry of the columns is one of the factors influencing the distribution of stresses in the region of slab-column connection affecting turn in sizing the punching shear in the flat slabs. In this study we performed a thorough data collection that aims to collect into a single job the greatest possible amount of slabs covering the biggest names in the study of national and international punch, featuring a total of 131 slabs. A comparison was made between the main normative codes currently used Eurocode 2 (2004), NBR 6118 (2007), ACI 318 (2008) and CEB-FIP (2010). The experimental results were compared with those obtained theoretically taking into account the effects of retangularidade rate index in flat slabs of reinforced concrete, without punching shear reinforcement checking the adequacy, trustworthiness of each recommendation, analyzing the particularities of the rules and guidelines of each normative criterion.
58

I berättarens grepp : En narratologisk studie av feministiskt medvetandehöjande romaner från 1970-talet

Jakobsson, Maria January 2006 (has links)
<p>This thesis concerns the feminist consciousness-raising novel of the 1970s. The aim of the thesis is to examine narrative strategies which, according to the consciousness-raising practice, are adapted to enlighten the political aspects of the personal. The focus is both on strategies that address the protagonist and on those that address the reader. I also examine in which way the use of these strategies is dependent upon ideas of class and gender.</p><p>I find that the narrative situation, in this case the relationship between the protagonist and the narrator, is central to the use of the consciousness-raising narrative strategies. In Anna-Lisa Bäckmans Fia i folkhemmet och Fia med manifestet, the protagonist Fia is positioned as an oppressed working-class woman, which results in a narrative situation that gives the protagonist a limited space of action and that gives the narrator the power to interpret the experiences of the protagonist. In Margareta Sarris Ta dej en slav och Mor ror åran är trasig, the relationship between the protagonist and the narrator is more equal, due to its dialogic form that enables the protagonist Lisa to talk back to the narrator. The consciousness-raising narrative follows a heteronormative development that is characteristic of all novels examined.</p><p>The analysis demonstrates that the narrative situation is important to the plot. Lisa is able to change the course of her life according to the novel’s feminist analysis, which Fia to a lesser degree, is not. The analysis also demonstrates that the narrative position is constructed according to gender as well as to class.</p>
59

I berättarens grepp : En narratologisk studie av feministiskt medvetandehöjande romaner från 1970-talet

Jakobsson, Maria January 2006 (has links)
This thesis concerns the feminist consciousness-raising novel of the 1970s. The aim of the thesis is to examine narrative strategies which, according to the consciousness-raising practice, are adapted to enlighten the political aspects of the personal. The focus is both on strategies that address the protagonist and on those that address the reader. I also examine in which way the use of these strategies is dependent upon ideas of class and gender. I find that the narrative situation, in this case the relationship between the protagonist and the narrator, is central to the use of the consciousness-raising narrative strategies. In Anna-Lisa Bäckmans Fia i folkhemmet och Fia med manifestet, the protagonist Fia is positioned as an oppressed working-class woman, which results in a narrative situation that gives the protagonist a limited space of action and that gives the narrator the power to interpret the experiences of the protagonist. In Margareta Sarris Ta dej en slav och Mor ror åran är trasig, the relationship between the protagonist and the narrator is more equal, due to its dialogic form that enables the protagonist Lisa to talk back to the narrator. The consciousness-raising narrative follows a heteronormative development that is characteristic of all novels examined. The analysis demonstrates that the narrative situation is important to the plot. Lisa is able to change the course of her life according to the novel’s feminist analysis, which Fia to a lesser degree, is not. The analysis also demonstrates that the narrative position is constructed according to gender as well as to class.
60

George Drouillard and John Colter: Heroes of the American West

Pike, Mitchell Edward 01 January 2012 (has links)
A study of George Drouillard's and John Colter's involvement in the expansion and exploration of the American West. This thesis looks at their contributions as a part of the Corps of Discovery and during the American fur trade. The thesis will also look into why men such as Drouillard and Colter and their contributions have been overlooked in recent history.

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