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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.
1

Baryon and lepton number violation at supercolliders

Gibbs, M. J. January 1994 (has links)
No description available.
2

Probing the large-scale structure of the Universe with future galaxy redshift surveys

Hatton, Stephen John January 1999 (has links)
Several projects are currently underway to obtain large galaxy redshift surveys over the course of the next decade. The aim of this thesis is to study how well the resultant three-dimensional maps of the galaxy distribution will be able to constrain the various parameters of the standard Big Bang cosmology. The work is driven by the need to deal with data of far better quality than has previously been available. Systematic biases in the treatment of existing datasets have been dwarfed by random errors due to the small size of the sample, but this will not be the case with the wealth of data that will shortly become available. We employ a set of high-resolution /V-body simulations spanning a range of cosmologies and galaxy biasing schemes. We use the power spectrum of the galaxy density field, measured using the fast Fourier transform process, to develop models and statistics for extracting cosmological information. In particular, we examine the distortion of the power spectrum by galaxy peculiar velocities when measurements are made in redshift space. Mock galaxy catalogues are drawn from these simulations, mimicking the geometries and selection functions of the large surveys we wish to model. Applying the same models to the mock catalogues is not a trivial task, as geometrical effects distort the power spectrum, and measurement errors are determined by the survey volume. We develop methods for assessing these effects and present an in-depth analysis of the likely confidence intervals we will obtain from the surveys on the parameters that determine the power spectrum. Real galaxy catalogues are prone to additional biases that must be assessed and removed. One of these is the effect of extinction by dust in the Milky Way, which imprints its own angular clustering signal on the measured power spectrum. We investigate the strength of this effect for the SDSS survey.
3

Galaxy clusters and the formation of large-scale structures in the universe

Croft, Rupert Alfred Charles January 1995 (has links)
No description available.
4

Classical and quantum fluctuations in superstring cosmology

Bridgman, Helen Amanda January 2001 (has links)
No description available.
5

Is nerd the new sexy? Um estudo sobre a recepção da série televisiva The Big Bang Theory / Is nerd the new sexy? A study on the reception of the television series The Big Bang Theory

Silva, Soraya Madeira da January 2016 (has links)
SILVA, Soraya Madeira da. Is nerd the new sexy? Um estudo sobre a recepção da série televisiva The Big Bang Theory. 2016. 178f. – Dissertação (Mestrado) – Universidade Federal do Ceará, Instituto de Cultura e Arte, Programa de Pós-graduação em Comunicação Social, Fortaleza (CE), 2016. / Submitted by Márcia Araújo (marcia_m_bezerra@yahoo.com.br) on 2016-06-15T14:32:35Z No. of bitstreams: 1 2016_dis_smsilva.pdf: 3247280 bytes, checksum: 6dcebf3f11041ecdfb9d88b5efa68c2e (MD5) / Approved for entry into archive by Márcia Araújo (marcia_m_bezerra@yahoo.com.br) on 2016-06-15T14:37:59Z (GMT) No. of bitstreams: 1 2016_dis_smsilva.pdf: 3247280 bytes, checksum: 6dcebf3f11041ecdfb9d88b5efa68c2e (MD5) / Made available in DSpace on 2016-06-15T14:37:59Z (GMT). No. of bitstreams: 1 2016_dis_smsilva.pdf: 3247280 bytes, checksum: 6dcebf3f11041ecdfb9d88b5efa68c2e (MD5) Previous issue date: 2016 / This research aims to investigate the relationship of people with the TV show The Big Bang Theory and their perception as to whether they consider themselves or are considered nerds. This group, which has long been seen and treated as a pariah of society, has gained fame in recent years and had his image reformulated in the media. This work, in a first moment, seeks to address the nerd profile, analyzing their history, characteristics and media representations in products as TV series and movies, to make a reflection about what means to be nerd currently. For this analysis, the authors Nugent (2008), Goffman (1988), Fernando and Rios (2001) and Bourdieu (1983) are used to identify the group's distinguishing characteristics, their stigmatization in society and its relationship with consumption and the media. Then, a discussion about the connection between communication and culture is aroused, using authors like Caune (2004), Thompson (2001), Schulman (2004) and Morley (1996), among others, to highlight the importance of cultural studies within the scope of this research. Production and consumption are intertwined when we look conveyed cultural products in mass media, so TV series, their classification, public relationship and the importance of the characters that make them up are analyzed as elements connecting product and audience. Jost (2012), Esquenazi (2010), Seger (2006), Davis (2001) and Field (2001) are used to explain the production processes of TV series and character creation, fundamentals to understand the success of an American TV show The Big Bang Theory, displayed on CBS (EUA) and Warner Channel (Brazil). After a detailed analyze of this sitcom's characters, the results of the research carried out for this job are presented. As methodology, a structured survey, with a quantitative and a qualitative approach was applied in a random sample of 600 person, with the purpose of investigate their consuming habits, favorite TV series, connection with characters, perceptions about The Big Bang Theory and their vision about consider themselves or be considered nerd by others. At the conclusion of this research, it is reported that the relationship between people and cultural products they consume is based on affect and identification with the plot and characters in the story. Regarding The Big Bang Theory series, different opinions are presented on the character stereotyping and narrative evolution. Finally, it's concluded that being a nerd, or be considered as well, nowadays it is still something that carries a lot of negativity for those who do not fall within the group, but becomes a empowering factor for who is included. This identity is constructed through the high consumption of cultural products aimed at establishing an emotional connection with these people and offering a projection of the narrative of their lives. / Esta pesquisa tem como objetivo investigar a relação das pessoas com a série televisiva The Big Bang Theory e sua percepção a respeito de se considerarem ou serem consideradas nerds. Este grupo, durante muito tempo visto e retratado como pária da sociedade, vem ganhando fama nos últimos anos e tem sua imagem reformulada nos meios midiáticos. Este trabalho, em um primeiro momento, procura traçar o perfil do nerd, analisando seu histórico, características e representações midiáticas, em produtos como séries e filmes, para fazer uma reflexão sobre o que é ser nerd atualmente. Para esta avaliação, os autores Nugent (2008), Goffman (1988), Fernando e Rios (2001) e Bourdieu (1983) são usados para identificar as características distintivas do grupo, sua estigmatização perante a sociedade e sua relação com o consumo e a mídia. Em seguida, levanta-se uma discussão a respeito da conexão entre comunicação e cultura, utilizando autores como Caune (2004), Thompson (2001), Schulman (2004) e Morley (1996), dentre outros, para ressaltar a importância dos Estudos Culturais dentro do âmbito desta pesquisa. Produção e consumo estão interligados quando analisamos produtos culturais veiculados em meios de comunicação de massa, por isso são analisados as séries televisivas, sua classificação, relação com o público e a importância dos personagens que as compõem como elementos de conexão entre produto e audiência. Jost (2012), Esquenazi (2010), Seger (2006), Davis (2001) e Field (2001) são utilizados para explanar os processos de produção de séries e de criação de personagens, fundamentais para entender o sucesso da série televisiva americana The Big Bang Theory, exibida pela CBS (EUA) e pela Warner Channel (Brasil). Após uma análise detalha dos personagens destas sitcom, apresenta-se os resultados da pesquisa realizada para este trabalho. Como metodologia, um questionário estruturado, com abordagem quantitativa e qualitativa, foi aplicado em uma amostra aleatória de 600 pessoas, com o objetivo de investigar seus hábitos de consumo, séries favoritas, conexão com os personagens, percepções acerca da série The Big Bang Theory e sua visão sobre considerarem-se ou serem considerados nerds por outras pessoas. Na conclusão desta pesquisa, relata-se que a relação das pessoas com os produtos culturais que consomem é baseada por afetos e identificação com o enredo e personagens da história. Em relação à série The Big Bang Theory, opiniões diversas são apresentadas sobre a estereotipificação dos personagens e evolução da narrativa. Por fim, conclui-se que ser nerd, ou ser considerado assim, hoje em dia ainda é algo que carrega bastante negatividade para quem não se insere no grupo, mas se torna um fator de empoderamento para quem se inclui. Esta identidade é construída através do alto consumo de produtos culturais que visam estabelecer uma conexão afetiva com essas pessoas e oferecer uma projeção da narrativa de suas vidas.
6

La teoria del big bang y la doctrina de Nagarjuna: el vacío o sunyata como síntesis ontológica de todo cuanto existe

Contreras Radovic, Cristian 14 July 2004 (has links)
Mi tesis doctoral investiga la Teoría del Big Bang sobre el origen del universo y su relación con la doctrina del sabio filósofo budista, Nagarjuna (India s.II-III), fundador de la Vía Media o Camino Medio del budismo, según su obra genuina titulada Mûla-mâdhyamaka-kârik_, un texto decididamente auténtico, opus magna de este autor conforme la tradición india, china y tibetana, prueba indiscutible de la historicidad de su figura. Nagarjuna, uno de los cuatro soles que iluminan al mundo desde sus cuatro direcciones, maestro espiritual de Oriente y Occidente, fue el creador de la escuela budista Mâdhyamaka viva en la India desde el siglo II al VI. La teoría científica de la Gran Explosión Universal o Big Bang concluye que el "vacío" es la fuente energética de donde surge el Cosmos: nuestro origen. La Doctrina de Nagarjuna prueba que el "vacío" es la esencia más profunda de la Realidad; un sistema filosófico consistente con las descripciones físicas contemporáneas acerca del campo de fuerza que da principio al Cosmos.De ahí que esta Tesis Doctoral se intitule: La Teoría del Big Bang y la Doctrina de Nagarjuna: el vacío o s_nyat_ como síntesis de todo cuanto existe. Una construcción teórica fundamentada en el principio según el cual filosofía y ciencia tienen un carácter universal y no están basadas únicamente en la cultura, es decir, responde a la autoridad de la experiencia, de los hechos empíricos. El texto se inscribe en el marco paradigmático de la Filosofía de la Ciencia y contempla un enfoque sincrético, ecléctico, multidisciplinar y holístico. El principal objetivo ha sido centrar la investigación en la temática cosmológica de la filosofía de Nagarjuna, es decir, en la verdad última sobre la naturaleza de todas las cosas, el origen del universo; si bien también posee implicancias soteriológicas, epistemológicas, gnoseológicas y éticas, de primera magnitud, en especial, para quienes estamos interesamos en el futuro de nuestra Cultura Occidental.El tema de la Introducción son los conceptos científicos centrales de la Teoría del Big Bang. En el Capítulo I abordo el Estado de la Cuestión. La aparición historiográfica del budismo en Occidente y de la figura de Nagarjuna. Además realizo un registro completo de autores, editores y traductores que han escrito sobre Nagarjuna en Occidente.En el Capítulo II elaboro un examen crítico de la obra literaria nagarjuniana centrándome en la temática cosmológica del corpus, sin descuidar la ética y ascética. Me refiero a una descripción racional y crítica a las ediciones. Preciso el privilegio de unos textos sobre otros, para centrarme en la Mûla-mâdhyamaka-kârik_, de la cual realizo una primera traducción al castellano de la traducción al francés del original tibetano de Georges Driessens, Traité du Milieu, Seuil, 1995; la única traducción completa al castellano existente del citado texto fundamental.En el Capítulo III pruebo que la visión del origen del universo de la actual ciencia occidental encuentra paralelos objetivos en el budismo oriental de nuestro autor, Nagarjuna, particularmente al considerar el concepto de vacío; una especie de leit motiv que une y sintetiza dichas corrientes de pensamiento, filosofía y ciencia. Profundizamos el estudio del significado de s_nyat_ o vacío y de la vacuidad, y realizamos un resumen de la Doctrina de Nagarjuna en su Camino Medio a la iluminación del hombre y la sociedad. Así observamos que las teorías y modelos principales de la física moderna conducen a una visión del mundo que es internamente consistente con el sistema filosófico de Nagarjuna. / My doctoral thesis studies the Big Bang Theory about the origin of the universe and his relationship with the doctrine of the buddhist philosopher Nagarjuna (India s.II-III), founder of Buddhism of the Middle Way, in accord with his genuine work, titled: Mûla-mâdhyamaka-kârik_; an authentic text, opus magna of this author in accord with the india, chinese and tibetan tradition, clear probe of the history of his figure. Nagarjuna, one of the four suns witch illuminated the world in the four directions, spiritual master of Orient and Occident, was the creator of the Buddhist Mâdhyamaka school lived in India from centuries II to VI. The Big Bang theory concludes that the vacuum is the main energy from which one emerge the Cosmos. Nagarjuna´s doctrine probe that the sunyata (or vacuum) is the most deep essence of the Reality; a philosophical vision that is consistent with the physics description about the force who permitted the beginning of the universe, that means, about the latest natural essence of all things. A theoretical construction founded in the principle that philosophy and science has a universal character, not only based on a unique culture, that means, respond to the experience authority and the empirical facts. I inscribed the thesis in a syncretism, eclectic, multisciplinary and holistic point of view. In the Introduction I describe the mains concepts of the Big Bang's theory.In Chapter I begin the description of the appearance of buddhism in Occident and Nagarjuna's figure. I made a complete register of the bibliography of authors, editors and translater about Nagarjuna. In Chapter II I made a critic exam of nagarjuna's works focused in the cosmological thematic. I privilege the Mûla-mâdhyamaka-kârik_, and I made a first translation to spanish from the french translation of the tibetan original of Georges Driessens, Traité du Milieu, Seuil, 1995; the first, unique and complete spanish translation of this fundamental text.In Chapter III I probe that the contemporary universe vision of the west scientific have objectives parallels with Nagarjuna's buddhism, in particular, with the vacuum concept or sunyata. My main intention is show that the scientific vision of the vacuum is similar to the Nagarjuna's sunyata, a kind of leit motiv between the modern science and budhhist philosophy. We are in front of a definition of the same thing and in the same sense, but from different disciplines; wherever, not only in front of a mere parallelism, but in front of a synthetic of the first magnitude and resonance, with a main significant for the World Culture.The Big Bang is a cosmological physic theory with naturals questions to philosophy and religion. We're in the ultimate limit of the universe, the exact place where we suppose is home's God. This scene is singular for faith and reason's history. What kind of philosophical adventure propose the contemporary physics to the World Culture? What kind of enigma take place now to the human spirit? The actual moment of cosmology is similar to the state of the Ptolemaic theory before Copernicus. The matrix of such a research impose to postulate new cosmic ingredient of a unknown essence -hot dark matter, cool dark matter, dark energy and additional new dimension of space-time-; and the biggest work is the unification between General Relativity and Quantum Mechanic, the way to describe -maybe- the initial instant of the Cosmos, full of fundamental questions. But this it is not the complete picture. On the other side, we need a new fundamental gnoseological paradigm between faith and reason, if our will is continuing. The philosophical vision complements the physic. My personal conviction is that only the synthesis between faith-reason, Orient-Occident, will be at last the most useful and powerful line of thinking for the Third Millennia. I see the present thesis in this paradigm of Philosophy of Science, in order to reject any conflict perspective between science, philosophy and religion.
7

Neutrino heating and baryon inhomogeneity in big bang nucleosynthesis /

Lara, Juan Felipe, January 2000 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references (leaves 226-230). Available also in a digital version from Dissertation Abstracts.
8

Elites and paradigms; a sociological analysis of the Big Bang and plasma debate in theoretical cosmology.

Ipe, Alex I. (Alex Ike), January 1900 (has links)
Thesis (M.A.)--Carleton University, 1996. / Also available in electronic format on the Internet.
9

Dualidade de Fator de Escala e Cosmologias Pre-Big-Bang.

LIMA, A. L. A. 20 September 2017 (has links)
Made available in DSpace on 2018-08-01T21:59:50Z (GMT). No. of bitstreams: 1 tese_11448_Tese final Andre Luiz Alves Lima - PPGFis.pdf: 4483830 bytes, checksum: 73c10ae115a7b4575ece1730f9f6e7de (MD5) Previous issue date: 2017-09-20 / Esta tese é uma investigação de modelos cosmológicos duais sob uma inversão do fator de escala no tempo conforme, na gravitação de Einstein. A transformação de Dualidade do Fator de Escala no tempo conforme (DFE) atua como um mapa entre altas e baixas energias, e entre evoluções aceleradas e desaceleradas do universo. Utilizada enquanto um princípio de simetria, a DFE seleciona modelos com duas fases de aceleração, simétricos por reflexão ao redor do ponto em que aceleração é nula. Encontramos uma classe desses modelos, correspondente a um gás de Chaplygin modificado, que pode ser usada como ferramenta de discussão em diversos regimes fenomenológicos, e.g. uma fase inflacionária do tipo hilltop, ou um universo de quintessência. A DFE, na gravitação de Einstein, é análoga a uma dualidade bem conhecida da gravitação dilatônica, em que a inversão do fator de escala (no quadro de cordas) junto com uma transformação apropriada do dilaton fornecem uma simetria das equações gravidilatônicas para uma classe muito restrita de potenciais. Apesar de ser uma simetria das equações de Friedmann no quadro de Einstein, as soluções duais da DFE, para qualquer potencial, podem ser interpretadas no quadro de cordas, onde fornecem transformações relacionando grandes e pequenos valores do fator de escala. A dualidade gravidilatônica da origem ao chamado Cenário Prée-Big-Bang na cosmologia de cordas. De maneira similar, um universo dual pela DFE pode ser interpretado como estando antes da singularidade, na gravitação de Einstein. Concentramo-nos em analisar as cosmologias duais em que a fase pré-big-bang é um universo em expansão eterna (ao contrário dos modelos usuais de ricochete), e sua fase final, acelerada, faz o papel da inflação antes do big-bang do universo seguinte. Essa idéia é reminiscente da idéia de uma `Cosmologia Conforme Cíclica'. A transição através da singularidade requer uma identificação conforme; abordamos esse problema utilizando a correspondência dS/CFT e o grupo de renormalização holográfico.
10

Mediatiserad religion i ramen av humor : En studie av den amerikanska sitcom-serien the Big Bang Theory / Mediatizied religion in a humour context : A study of the American sitcom-series the Big Bang Theory

Andersson Happe, Emma January 2015 (has links)
Since 2007 the American sitcom the Big Bang Theory has spread throughout the world. With its twenty million watchers it is one of the most popular sitcoms of our time. The starting point for this essay is that the humourus series with the more or less geeky main characters is more than just entertainment - it is a part of the mediatization of religion. This means that media is affecting the recipients’ view on religion in general and the personal religion. As we watch TV, we get socialized into how to act in our every day life. In this case, it is about religion depicted as entertainment. Through a film analysis of a number of selected scenes from the first three seasons of the series, this essay stresses the representation of the religious traditions Judaism, Christianity, Hinduism and religion in general. On the basis of etnocentrism, exitocism and a differentiation between religious praxis and religious beliefs my conclution is that Jews are portrayed in a very ”modern” and secular way, Christians are narrow-minded and quite stupid and Hindus are doing strange rituals and believe in very unreasonable phenomena. Religion in general is portrayed as something accepted but it should be rational and religous practice has its own time and place.

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