Thesis (Ph. D.)--University of Wisconsin--Madison, 1961. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on September 16, 2009). Thesis advisor: Dr. Thomas G. Engel. Includes bibliographical references.

Wong, Yat Sen. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2009. / Includes bibliographical references (leaves 71-72). / Abstract also in Chinese. / Chapter 1 --- Lorentz Manifolds --- p.6 / Chapter 1.1 --- Preliminaries --- p.6 / Chapter 1.2 --- "Parallel Translation, geodesics and exponential map" --- p.9 / Chapter 1.3 --- "Curvature, frame field and Ricci curvature" --- p.14 / Chapter 1.4 --- Two-parameter maps --- p.15 / Chapter 2 --- Causal character in Lorentz geometry --- p.17 / Chapter 2.1 --- The Gauss Lemma --- p.17 / Chapter 2.2 --- Local causal character --- p.19 / Chapter 2.3 --- Timecones --- p.20 / Chapter 2.4 --- Local Lorentz Geometry --- p.21 / Chapter 3 --- Calculus of variations --- p.24 / Chapter 3.1 --- Jacobi fields --- p.24 / Chapter 3.2 --- Lorentz submanifolds --- p.25 / Chapter 3.3 --- The endmanifold case --- p.26 / Chapter 3.4 --- Focal points --- p.27 / Chapter 3.5 --- A causality theorem --- p.28 / Chapter 4 --- Causality in Lorentz manifolds --- p.32 / Chapter 4.1 --- Causality relations --- p.32 / Chapter 4.2 --- Quasi-limits --- p.35 / Chapter 4.3 --- Causality conditions --- p.37 / Chapter 4.4 --- Time separation --- p.39 / Chapter 4.5 --- Achronal sets --- p.42 / Chapter 4.6 --- Cauchy hypersurfaces --- p.43 / Chapter 4.7 --- Cauchy developments --- p.45 / Chapter 4.8 --- Spacelike hypersurfaces --- p.49 / Chapter 4.9 --- Cauchy horizons --- p.52 / Chapter 4.10 --- Hawking´ةs Singularity Theorem --- p.56 / Chapter 4.11 --- Penrose´ةs Singularity Theorem --- p.58 / Chapter 5 --- "Monge-Ampere equations, the Bergman kernel, and geometry of pesudoconvex domains" --- p.62 / Chapter 5.1 --- Monge-Ampere equations --- p.62 / Chapter 5.2 --- Differential geometry on the boundary --- p.63 / Chapter 5.3 --- Computations --- p.66 / Bibliography --- p.71

Made available in DSpace on 2018-08-01T22:32:25Z (GMT). No. of bitstreams: 1 tese_10311_Dissertacao_v_final_GOBBI- FINAL.pdf: 10563037 bytes, checksum: 26ab182ce2fde3077c6ee36e12564cbd (MD5) Previous issue date: 2016-09-30 / Este presente trabalho procura apresentar, utilizando uma SC, uma sequencia didatica com um enfoque no assim chamado ensino por investigacão , e bjetiva abordar um topico da CR, em particular, o fenomeno físico da contracão pacial, com estudantes do primeiro ano do ensino médio.Alem da dissertação, esta pesquisa proporcionou a elaboração de um produto final,um conjunto software + Material Instrucional, que pode oportunizar a outro professor, em outro momento e em outro ambiente escolar uma alternativa para um ensino de Física cada vez mais agradavel O trabalho e aportado na Teoria da Mediação de Vigotsky visto que, ao ongo da aplicac ̧ao da SD, os alunos, coletiva ou individualmente, irão formular as hipoteses, escolher os procedimentos e/ou dados e a obter as conclusões com base na sua realidade socio-cultural. Também em seguimos as premissas da aprendizagem significativa de Ausubel visto que a proposta de ensino deste tem um carater investigativo e uma demonstração investigativa e uma atividade. A que necessita de onhecimentos previos. Os dados coletados para a pesquisa tiveram origem nas atividades realizadas pelos estudantes e do acompanhamento sistematico da aplicação da sequência didatica. Assim sendo, aplicamos uma serie de atividades, tais omo: diarios de bordo, questionarios os-interveção modelo Likert, gravacões das aulas em vídeos, roteiro semi-estruturado (com o uso do simulador) e entrevistas,configurando um estudo quali-quantitativo Os processos de analise dos dados coletados foram: analise das habilidades, via MODELO DE RASH, em questionarios objetivos no formato Likert; analise dos argumentos produzidos pelos estudantes, segundo a tecnica da ANALISE DE CONTEUDO, sugerida pela Bardin e as analises das entrevistas grupo focal, dentro do referencial da TEORIA FUNDAMENTADA, sugerida pelo Gaskell. Os resultados indicaram ganho no parametro das habilidades dos alunos no teste objetivo, com significancia estatistica, e construcão de conceitos, padrões e conexões com o auxílio do simulador, mediante a analise dos materiais produzidos elos alunos. Este trabalho não tem a pretensão de revolucionar o ensino da Física Moderna, mas sim apenas sugerir uma forma alternativa de abordagem desta.

This study measured the Lorentz-Lorenz function for ethane as determined by [formula omitted] for densities from 1 to 200 amagats, where ℒ is the Lorentz-Lorenz function, ρ is the density, and n is the index of refraction for a wavelength of 6328 Å. ℒ was found to be constant to within ½ % with an average value of .3794± .0003 cc/gm for values of ℒ corresponding to ∣ρ−ρc∣ ≤ .2. The index of refraction of ethane was measured by using a light-weight cell which had two sapphire windows set at an angle to each other and through which a plane wave of monochromatic light was passed. A micrometer-driven mirror was used to direct the light into a collimating telescope and the angle of deflection was then related to n. ρ was measured by weighing the cell and its contents on a precision balance. Ethane could be released from the cell to vary ρ. The coexistence curve was measured and three parameters used to fit the curve. This enabled extrapolation for the critical temperature which was found to be 32.079 ± .001 °C . Extrapolation of the rectilinear diameter gave a critical density of .2062 ± .0003 gm/cc. / Science, Faculty of / Physics and Astronomy, Department of / Graduate

No description available.

Nesse trabalho apresentaremos alguns exemplos clássicos que evidenciam as diferenças entre a geometria Riemanniana e a semi-Riemanniana (Lorentziana) quanto à completude de geodésicas. Para isso, revisitaremos conceitos básicos de Geometria, seguido de uma introdução aos espaços vetoriais de Lorentz e um estudo inicial sobre o grupo de Lorentz. Nos capítulos finais discutiremos sobre completude de geodésicas e como se distanciam do caso Riemanniano. / In this work we intend to present some classical examples that display the differences between Riemannian and semi-Riemannian (Lorentzian) geometry in relation to the completeness of geodesics. For this, we will revisit basic Geometry concepts followed by an introduction to the vector spaces of Lorentz and a simple study on the Lorentz group. In the final chapters we will discuss about the completeness of geodesics and how it distances itself from the Riemannian case.

No description available.

A nonlinear wave equation invariant with respect to unitary representations of the Lorentz group is considered in an attempt to describe extended particles with spin and positive definite energy by means of a self-confined classical field. The wave function has an infinite number of components and, in the specific representations used, the corresponding internal degree of freedom is identified with the spin. A fractional power of the scalar bilinear invariant appears as an appropriate choice for the nonlinearity in order that all the stationary states be localized. Two approximation methods are proposed and both lead to results that bear a resemblance to the results of the MIT bag model.

Universiẗat, Diss., 1997--Gießen.