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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.
11

A recíproca do teorema de Denjoy-Schwartz / The converse of Denjoy-Schwartz theorem

Carvalho, Tiago de 13 February 2007 (has links)
O principal resultado desta dissertação garante que dado qualquer fluxo contínuo \'varphi\'numa variedade bidimensional compacta e suave, existe um fluxo de classe \'C POT.1\' que é topologicamente equivalente a ele. Além disso, quando todos os conjuntos minimais de \'varphi\'são triviais, \'varphi\' é topologicamente equivalente a um fluxo suave / The main result of this dissertation guarantees that give any continuous flow on a smooth compact 2-manifold, there exist a \'CPOT. 1\'-flow topologically equivalent to it. Moreover, when every minimal set of \'varphi\' is trivial, \'varphi\' is topologically equivalent to a smooth flow
12

[en] WATER AND OIL FLOW SIMULATION IN POROUS MEDIA / [pt] SIMULAÇÃO DO ESCOAMENTO DE ÁGUA E ÓLEO EM MEIOS POROSOS

MARCOS AURELIO CITELI DA SILVA 14 April 2004 (has links)
[pt] Muitos problemas provenientes do mundo real podem ser modelados por sistemas de equações diferenciais parciais (EDP´s). No entanto, as equações resultantes da discretização produzem matrizes grandes e freqüentementes mal condicionadas. Este trabaho implementa o método de elementos finitos mistos para resolver numericamente um sistema de EDP´s oriundo de um modelo de escoamento de fluidos em meios porosos e melhora sua performance usando precondicionadores e processamento paralelo. / [en] Many problems arising from real world can be represented by systems of partial diferential equations (PDE´s). However, the resulting discrete equations produce large and frequently bad conditioned matrices. This work implements the mixed finite element method to numerically solve a system of PDE´s coming from a multiphase flow in porous media model and improve its performance by preconditioners and parallel processing.
13

Desenvolvimento de valores em crianças : estrutura, transmissão, personalidade e religiosidade

GOMES, Yves de Albuquerque. 23 February 2015 (has links)
Submitted by Irene Nascimento (irene.kessia@ufpe.br) on 2016-06-29T16:31:19Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Yves Tese Biblioteca.pdf: 8687902 bytes, checksum: aa46e25468627b3341e46f3ae9039d1f (MD5) / Made available in DSpace on 2016-06-29T16:31:19Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Yves Tese Biblioteca.pdf: 8687902 bytes, checksum: aa46e25468627b3341e46f3ae9039d1f (MD5) Previous issue date: 2015-02-23 / Esta pesquisa teve como objetivo investigar o desenvolvimento de valores em crianças, segundo a teoria de universais em valores humanos, de Schwartz. Para isso foram seguidas quatro vertentes. Primeiramente, a estrutura dos valores das crianças foi estudada, considerando-se como variável importante o tipo de escola frequentado pelos participantes – se particular ou pública. Em seguida foi enfocada a transmissão materna de valores, incluindo-se a verificação de se a transmissão indireta, mediada pela percepção da criança, seria mais intensa que a direta. A terceira linha inquisitiva abordou a personalidade e sua relação com valores. Finalmente, foi tratada a influência da religião e do grau de religiosidade, sobre os valores. Para a realização destas quatro investigações as crianças responderam ao Picture-Based Value Survey for Children (PBVS-C), um instrumento capaz de permitir que elas facilmente ponham seus valores num ranking, através de figuras com legendas. Além de responderem a este instrumento referindo-se a si mesmas, elas responderam-no também tomando o ponto de vista de suas mães. Já os valores das mães foram acessados pelo Questionário de Perfis de Valores (QVP). Este instrumento consiste em uma série de perfis que descrevem personagens. O respondente deve julgar o quão parecido consigo é o personagem no perfil de cada item. A personalidade foi examinada pelo Ten Item Personality Inventory (TIPI), o qual foi respondido pelas mães, sobre si mesmas e sobre seus(a) filhos(a). E as questões sobre a religião e o grau de religiosidade fizeram parte de um questionário sociodemográfico. As análises foram feitas por escalonamentos multidimensionais, correlações bivariadas e comparações de médias. Os resultados acerca da estrutura dos valores das crianças mostraram que a escola particular não conduz a uma estrutura mais semelhante à teórica. No entanto, o conteúdo dos valores de estudantes de escolas privadas é sistematicamente mais sofisticado. A transmissão materna de valores contou com resultados que corroboraram a hipótese de que a transmissão indireta é mais forte que a direta. Os traços de personalidade representados no TIPI relacionaram-se a uma das dimensões de valores. A religião e o grau de religiosidade fundiram-se a essa mesma dimensão, de abertura versus conservadorismo. O conjunto de achados da pesquisa possibilitou a formulação de um mapa conceitual integrativo sobre o desenvolvimento de valores em crianças brasileiras. Esta integração inclui o tipo de escola, a personalidade e a religião e grau de religiosidade das mães; bem como variáveis externas de sexo e idade. Os dados forneceram também algumas pistas otimistas sobre a adequação do PBVS-C às crianças brasileiras. Os desvios encontrados até então, quando analisados conjuntamente, apontam para causas em fenômenos culturais inerentes às escolas. Espera-se que estes achados contribuam para o aprimoramento do PBVS-C e para o avanço e integração da psicologia acerca de valores, personalidade e religião. / This research had the goal of investigating the development of children’s values, according to the theory of universals in human values, by Schwartz. To accomplish this goal, four lines of inquiry were followed. Firstly, the children’s values structure was studied, considering an important variable the type of school – if private or public. Then the transmission of values from mother to child was focused, including the verification of whether or not the indirect transmission, mediated by the child’s perception, was more intense then the direct one. The third line of inquiry approached the personality and its relation with values. Finally, the influence of religion and degree of religiosity over values was treated. So that these four investigations could be performed, the children answered the Picture-Based Value Survey for Children (PBVS-C), an instrument capable of allowing them to easily put their values in a ranking, using pictures with captions. Besides answering this instrument about themselves, they answered it taking their mother’s point of view. As for the mothers’ values, these were accessed through the Portrait-Value Questionnaire (PVQ). This instrument is formed by a series of portraits which describe characters. The participant must judge how similar to himself is the portrait in each item. The personality was examined by the Ten Item Personality Inventory (TIPI), which was answered by the mothers, about themselves and their children. And the questions about religion and degree of religiosity were included in a socio-demographic questionnaire. The analyses were made by multidimensional scaling, bivariate correlations and means comparisons. The results about the children’s values structure showed that private schools do not lead towards a structure closer to the theoretical one. However, the content of the values in private school students is systematically more sophisticated. The transmission of values from mother to child had results that corroborated the hypothesis that the indirect transmission is stronger than the direct one. The personality traits represented in the TIPI related to one of the dimensions of values. Religion and degree of religiosity merged with this same dimension, of openness versus conservation. The conjunction of findings in this research allowed the formulation of an integrative conceptual map about the development of Brazilian children’s values. This integration includes the school type, personality and religion and degree of religiosity of the mothers; as well as external variables of sex and age. The data also provides optimistic clues regarding the adaptation of the PBVS-C to Brazilian children. The deviations found so far, when analyzed together, suggest causes in cultural phenomena inherent to the schools. It is expected that these finds contribute to the betterment of the PBVS-C and to the advancement and integration of the psychology about values, personality and religion.
14

A recíproca do teorema de Denjoy-Schwartz / The converse of Denjoy-Schwartz theorem

Tiago de Carvalho 13 February 2007 (has links)
O principal resultado desta dissertação garante que dado qualquer fluxo contínuo \'varphi\'numa variedade bidimensional compacta e suave, existe um fluxo de classe \'C POT.1\' que é topologicamente equivalente a ele. Além disso, quando todos os conjuntos minimais de \'varphi\'são triviais, \'varphi\' é topologicamente equivalente a um fluxo suave / The main result of this dissertation guarantees that give any continuous flow on a smooth compact 2-manifold, there exist a \'CPOT. 1\'-flow topologically equivalent to it. Moreover, when every minimal set of \'varphi\' is trivial, \'varphi\' is topologically equivalent to a smooth flow
15

Laurent schwartz (1915-2002) et la vie collective des mathématiques / Laurent schwartz (1915-2002) and the collective life of mathematics

Paumier, Anne-Sandrine 30 June 2014 (has links)
Ce travail se saisit de la figure de Laurent Schwartz (1915-2002) pour étudier la vie collective des mathématiques dans la seconde moitié du XXème siècle.Il vise à montrer comment les pratiques collectives sont alors constitutives du travail et de la communauté mathématiques et comment elles évoluent au cours de cette période. Par le biais biographique, en considérant Schwartz à la fois comme un acteur important qui laisse de nombreuses traces ou comme un simple témoin, nous présentons plusieurs tableaux du collectif. Nous étudions la rencontre que Schwartz fait de la vie collective des mathématiques pendant la Seconde Guerre mondiale, notamment par son interaction avec le groupe Bourbaki. Nous analysons ensuite la diffusion de la théorie des distribu- tions dans les mathématiques et son historiographie et montrons le rôle actif de Schwartz dans ces processus. Un chapitre consacré au théorème des noyaux de Schwartz et ses écritures ultérieures permet d'approfondir l'étude des interactions entre pratiques d'écriture en mathématiques et différents types de collectifs. Ce sont ensuite sur trois formes d'organisation collective du travail mathématique que nous nous penchons : le colloque (en proposant une étude de cas sur le colloque d'analyse harmonique de 1947), le séminaire et, enfin, le laboratoire de mathématiques (en prenant l'exemple du Centre de Mathématiques de l'École polytechnique). Enfin, nous abordons la question de l'engagement politique de Schwartz en tant que mathématicien. Nous cherchons à montrer comment cet engagement traduit une certaine conception de la communauté mathématique, tout en s'inspirant de ses pratiques sociales particulières. / This work takes the case of laurent schwartz (1915-2002) to study the collective life of mathematics in the second half of the 20th century.Its goal is to show how collective practices have then been constitutive of mathematical work and community, as well as how they evolved over this period. through a biographical lens, by considering schwartz both as an important actor who has left numerous traces and as a simple witness, we present several tableaus of the collective. we study the encounter between schwartz and the collective life of mathematics during world war ii, in particular through his interaction with the bourbaki group. we then analyze the diffusion of the theory of distributions in mathematics and its historiography, and show schwartz?active role in these processes. a chapter devoted to the kernel theorem (théorème des noyaux) and its later written incarnations allows us to deepen our study of interactions between writing practices in mathematics and various kinds of collectives. Three forms of collective organization of the mathematical work are then investigated: the conference (through a study of the 1947 colloquium on harmonic analysis), the seminar, and, finally, the mathematical research center (taking as an example the centre de mathématiques de l'ecole polytechnique). Finally, we take on the question of schwartz's political engagement as a mathematician. we wish to show how this engagement embodies a certain conception of the mathematical community, while taking some inspiration from its particular social practices
16

The cross-cultural application of the adapted Schwartz values instrument in South Africa / G.C. Welthagen

Welthagen, Gerrit Cornelius January 2005 (has links)
Different value systems are a major source of diversity between people and culture groups. A better understanding of these differences can be a valuable tool when a diverse work force, as found in South Africa, has to be managed. Values can act as a unifying theory for the field of human motivation, as a way of organising the different needs, motives and goals proposed in other theories. The values theory describes aspects of the human psychological structure that are fundamental, aspects presumably common to all humankind. The objective of this study was to investigate the construct equivalence of the values as measured by the Work and Organizational Values Scale for new applicants from different language groups in the South African Police Service (SAPS), and to investigate the relationship between the value patterns of the different language and gender groups. A cross-sectional survey design was used. The study population consisted of two groups who applied for jobs in the South African Police Services (SAPS). The first group consisted of civilians (N=3 400), while the second group consisted of police applicants (N=1 800). The Work and Organizational Values Scale was administered. Descriptive statistics, exploratory factor analyses, and multivariate analysis of variance were used to analyse the results. Principal component analysis with a direct oblimin rotation resulted in two factors. The first factor was interpreted as self-enhancement (power, materialism and prestige) versus conservation (conformity and security). The second factor was interpreted as collectivism (social commitment, relations, and environment) versus individualism (goal-orientedness. stimulation and self-direction). These factors were found to be equivalent for four language groups. Statistically significant differences were found between the value priorities of different language groups as well as genders. However, larger practically significant differences were found between males and females than between different language groups. Recommendations for future research were made. / Thesis (M.A. (Industrial Psychology))--North-West University, Potchefstroom Campus, 2006.
17

Errors in Judgement: How Status, Values, and Moral Foundations Influence Moral Judgments of Guilt and Punishment

Dawson, Jessica January 2016 (has links)
<p>This study investigates how actor status, moral foundations theory and Schwartz values influence the moral judgments of guilt and punishment. I argue that to understand individual values consequences for actions, they must be considered within organizational values and larger institutional logics frameworks. Building off Zerubavel’s conception of a three level cognition (Zerubavel 1999), I argue for a tri level conception of values and morality in order to more fully understand how moral judgements work as well as the social context in which they are shaped. Using original research, I offer evidence of three levels of morality. First, I evaluate actor status on judgments of guilt and punishment. I then evaluate individual moral culture using Schwartz Values (Schwartz 2012; Vaisey and Miles 2014). I evaluate the impact of the organization on moral culture measure through the use of status hierarchies (Sauder, Lynn, and Podolny 2012). Finally, I evaluate broader cultural morality using Moral Foundations Theory (Graham et al. 2016; Kesebir and Haidt 2010). Taken together, these three levels of morality present a more ecologically valid understanding of the ways in which moral culture works from the individual, through the meso-social level and to the broader culture. I demonstrate the complex ways in which moral judgments are influenced by universal concerns, organizational influences and individual characteristics. I find that moral foundations theory conceptions of harm does not predict judgments of guilt and punishment but that Schwartz Values do influence these moral judgments. I also find that it is the actor status that most strongly predicts the outcomes of guilt and punishment. The research provides a foundation for future research of how actor status influences moral judgments of guilt and punishment beyond the limited moral community of the current study.</p> / Dissertation
18

The Making and Analysis of For Justin

Schwartz, Adam 19 December 2008 (has links)
This paper thoroughly examines the production of the thesis film, For Justin. Each area of the film's production is discussed and analyzed, including the writing, directing, production design, cinematography, editing, sound, and workflow. My decisions in these areas will be discussed at length and ultimately the final film will be analyzed in order to determine whether I achieved my goal of challenging myself to create a heartfelt, touching film with high production values for my twin brother, Justin.
19

Om konsten att konstruera en kvinna : retoriska strategier i 1800-talets rådgivare och i Marie Sophie Schwartz' romaner /

Kolbe, Gunlög, January 2001 (has links)
Dissertation--Göteborg, 2001. / Bibliogr. p. Bibliogr. p. 276-292.
20

The cross-cultural application of the adapted Schwartz values instrument in South Africa / G.C. Welthagen

Welthagen, Gerrit Cornelius January 2005 (has links)
Different value systems are a major source of diversity between people and culture groups. A better understanding of these differences can be a valuable tool when a diverse work force, as found in South Africa, has to be managed. Values can act as a unifying theory for the field of human motivation, as a way of organising the different needs, motives and goals proposed in other theories. The values theory describes aspects of the human psychological structure that are fundamental, aspects presumably common to all humankind. The objective of this study was to investigate the construct equivalence of the values as measured by the Work and Organizational Values Scale for new applicants from different language groups in the South African Police Service (SAPS), and to investigate the relationship between the value patterns of the different language and gender groups. A cross-sectional survey design was used. The study population consisted of two groups who applied for jobs in the South African Police Services (SAPS). The first group consisted of civilians (N=3 400), while the second group consisted of police applicants (N=1 800). The Work and Organizational Values Scale was administered. Descriptive statistics, exploratory factor analyses, and multivariate analysis of variance were used to analyse the results. Principal component analysis with a direct oblimin rotation resulted in two factors. The first factor was interpreted as self-enhancement (power, materialism and prestige) versus conservation (conformity and security). The second factor was interpreted as collectivism (social commitment, relations, and environment) versus individualism (goal-orientedness. stimulation and self-direction). These factors were found to be equivalent for four language groups. Statistically significant differences were found between the value priorities of different language groups as well as genders. However, larger practically significant differences were found between males and females than between different language groups. Recommendations for future research were made. / Thesis (M.A. (Industrial Psychology))--North-West University, Potchefstroom Campus, 2006.

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