Academic literature on the topic 'UniverCM'

Orientador: Pedro Cunha de Holanda<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-08-23T06:10:07Z (GMT). No. of bitstreams: 1 Motta_MarieleKatherineFaria_D.pdf: 1550492 bytes, checksum: f768e755d887ba2e47b72fc56b22c14f (MD5) Previous issue date: 2013<br>Resumo: Gostaríamos de explorar as consequências da ausência de conhecimento prévio sobre o modelo correto para energia escura que permita interpretar as observações cosmológicas. A magnitude das distorções no espaço de redshift e da lente gravitacional fraca é determinada pela métrica na quais galáxias e luzes se propagam. Mostramos que, com observações precisas o suficiente, é possível utilizar estes dados para reconstruir a métrica no nosso cone de luz passado e portanto, o stress-anisotrópico e os potenciais gravitacionais podem ser medidos independentemente de modelo. Exploramos a degenerescência escura, ou o fato de que matéria e energia escura são indistinguíveis pois afetam o setor visível apenas através dos potenciais gravitacionais que produzem. Esta degenerescência permanece a menos que se suponha um modelo para energia escura: o bias entre galáxias e perturbações de matéria escura não pode ser determinado; e apenas quando o princípio da equivalência é assegurado, pode-se identificar a velocidade da matéria escura com a das galáxias. Mesmo com estas limitações, é possível construir testes para classes de modelos de energia escura que se baseiam em medidas em diferentes escalas e redshifts e não dependem de parametrizações ou condições iniciais. Demonstramos como se pode descartar a classe mais geral de modelos escalares-tensoriais sem precisar supor a validade do regime quasi-estático. Finalmente, discutimos como a degenerência escura se manifesta em uma análise dependente de modelo<br>Abstract: We would like to explore the consequences of having no prior knowledge about the correct model for dark energy that would allow us to interpret observations. The magnitude of redshift-space distortions and weak gravitational lensing is determined by the metric on which galaxies and light propagate. With precise enough observations it is then possible to use this data to reconstruct the metric on our past lightcone, therefore anisotropic stress and gravitational potentials can be measured in a model-independent way. We explore the dark degeneracy, or the fact that dark matter and dark energy are indistinguishable, for they affect the visible sector only through the gravitational potential they produce. This degeneracy remains unless a dark energy model is provided: the bias between dark matter and galaxies cannot be determined; and only when the Equivalence Principle is valid, one can identify the velocities of dark matter with that of the galaxies. In spite of these limitations, it is possible to construct tests for classes of dark energy models that are based on measurements at different scales and redshifts and do not depend on parametrizations or initial conditions. We demonstrate how one can rule out the most general class of scalar-tensor models without having to assume quasi-staticity. Finally, we discuss how the dark degeneracy manifests itself in a model-dependent analysis<br>Doutorado<br>Física<br>Doutora em Ciências

A SECOND UNIVERSE is a memoir-in-essays that traces the author’s coming of age and her pursuit of self-discovery, belonging, and healing in all its forms. The book opens in the past, diving into the lives of the author’s parents before she was born and shedding light on the many obstacles they overcame to bring her earth-side. Set against the backdrop of the Southern Utah deserts and the clarity the author finds in the natural world, these essays wind through the author’s different childhood homes, down the lonely and desolate road of a sister’s addiction, and into the darkness that comes as she braces for her father’s impending blindness. Similar to Brenda Miller’s LISTENING AGAINST THE STONE, this collection explores the inherent desire for human connection and spiritual insight that we search for in the places we live, the people we love, and the nature that surrounds us.

Abstrakt I detta arbete undersöks hur konceptet lek går att applicera på digitala spel och hur man presenterar ett fiktivt universum och de regler som definierar det universumet. Syftet med denna undersökning är att öka kvaliteten på digitala spel för spelare genom att öka förståelsen för hur sådana regler introduceras. Frågeställningen som ämnas att besvaras är “hur kan man introducera realistiska, semi-realistiska och fiktiva regler i ett spel?”. Undersökningen baseras delvis på analyser kring varför vissa introduktioner av regler ofta accepteras och andra inte, dels på utvärdering av en gestaltning och dels på tidigare forskning. Denna undersökning är indelad i två delar; en researchdel och en produktionsdel. För att besvara frågan har research skett kring vad som känns till sedan tidigare och ett digitalt spel har producerats där den stora regeln som skiljer verkligheten från detta fiktiva universum är paranormal aktivitet, eller spöken. Nyckelord: regler, magisk cirkel, inlevelse och spelproduktion. Abstract In this work the concept of play and how it may be applied to digital games and how to introduce a fictional universe and the rules that define that universe is being investigated. The purpose of this work is to increase the quality of digital games by increasing our understanding of how such rules may be introduced. The question to be answered is “how may realistic, semi-realistic and fictional rules be introduced in a digital game?”. This work is based partly on analyses on why some introductions of rules are often accepted and some often not, partly on evaluation of a product created by us and partly on earlier research. This work is split into two parts; one research part and one production part. To answer the question research about what is previously known has been conducted and a digital game has been produced where the main rule that separates the fictional universe from ours is paranormal activity, or ghosts. Keywords: Rules, magical circle, immersion and game production.<br>Detta är en reflektionsdel till en digital medieproduktion.

After a brief introduction to the main results of Recursion Theory, we present the notion of Partial Applicative Structures (PAS). We follow that with a brief discussion of the axioms of Intuitionistic Zermelo-Fraenkel Set Theory (IZF). We then present the construction of a P -valued model of IZF where P is a Powell Algebra derived from a PAS. We follow this with a detailed discussion of the Realizability Universe, the P -valued model when P is derived from Kleene's PAS. Using the model above, we shall establish some independence and consistency results. The main result of the essay is to show that Strong Church's Thesis is consistent with IZF relative to IZF.

In this contribution, we have constructed new analytical solutions for initial data of the Einstein equations. Such solutions are valuable for gaining a better understanding of problems involving strong gravitational and/or electromagnetic interactions in general relativity. In this process, we have examined an inhomogeneous cosmological model consisting a lattice of regularly arranged, charged black holes with initial data corresponding to the maximum expansion of a cosmological solution. We have also refined the method in such a way that the values of the mass and charge of the sources can be prescribed beforehand subject to certain constraints dictated by the field equations.

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão. Programa de Pós-Graduação em Literatura.<br>Made available in DSpace on 2012-10-24T08:11:37Z (GMT). No. of bitstreams: 1 266540.pdf: 1048602 bytes, checksum: 79ca3a2d0ced4828232994802c23f75e (MD5)<br>Neste trabalho se explora a visão sobre a linguagem em alguns textos de Jorge Luis Borges em três períodos de escrita, os textos iniciais (1918-1925), os textos da sua primeira etapa (1925-1928) e os da segunda etapa (posteriores a 1930). Nestas etapas são identificados e comparados os elementos que caracterizam a tematização da linguagem. Assim, a escrita borgeana é analisada na sua profunda reflexão sobre as diversas temáticas lingüísticas e filosóficas que envolvem o estudo da linguagem, desde a análise da língua espanhola e de uma postura regionalista até as considerações universalistas que abordam a relação entre linguagem e realidade, bem como a partir de óticas convencionalistas e naturalistas que vêem na linguagem um sistema de signos arbitrários ou relacionados com as coisas às quais as palavras se referem.

I take inspiration from ordinary objects and materials. Through photography, I attempt to transcend the familiar to discover complexity within the bits and pieces of my everyday life. Like other artistic representations, a photograph is a singular portrayal, not an actualization of physical reality. My artistic exploration of this involves incorporating elements of abstraction to point to the truth that all photographs are, by nature, an abstraction of our physical reality based on perspective. The resulting images often share a quality of impermanence, counterbalanced by the act of making a photographic document. By evoking this temporal quality of photography and abstracting familiar materials and surfaces, I aim to create a playful tension in my imagery.