Made available in DSpace on 2016-04-25T20:21:51Z (GMT). No. of bitstreams: 1 renata lima.pdf: 1488304 bytes, checksum: ac63cb565b8e8e01ea02f4ca2d38d8e5 (MD5) Previous issue date: 2007-06-14 / The main objective of this research was to describe and analyze the image that amateur runners, members of the runners´ team Run & Fun, in São Paulo, have of themselves: how they perceive themselves as runners and what are the values that characterize and unite them. An ethnographic research was conducted during one year in which the runners´ routine and their relationship among themselves and with the trainers were observed and described, as well as their clothes (the team´s uniform and the sneakers). Considering that there are beginner and initiate runners in the group, this research tried to identify if both kinds of runners share the same image or if beginner´s image is built by their companionship with initiate runners. The research also tried to identify the role that the main sneakers´ brands, Asics, Mizuno and Nike, play in the idealized runners´ image. Living together with these athletes during one year revealed that beginners and initiates do not share the same idealized image of being an amateur runner. Each of them create their own athlete´s fantasy . In other words, they use different symbols to be connected with running and with the runners´ team. In a sense, sneakers´ brands and runners´ teams are brands that have different meanings built up by the runners to create their athlete´s fantasies / Esta pesquisa teve como objetivo descrever e analisar a imagem que os corredores amadores participantes do grupo de corrida Run & Fun, em São Paulo, fazem de si: como eles se vêem e que valores os caracterizam e os unem. Para tal, foi realizada uma pesquisa etnográfica durante um ano, em que se observou e descreveu a rotina dos corredores e seus relacionamentos entre si, com os treinadores e a vestimenta usada (o uniforme e o tênis). Considerando que existem corredores iniciantes e corredores experientes ou iniciados no grupo, a pesquisa buscou identificar se ambos compartilham uma mesma imagem ou se a imagem dos corredores iniciantes é construída ao longo do tempo, através da convivência com corredores iniciados. A pesquisa também buscou analisar o papel que as principais marcas de tênis, Asics, Mizuno e Nike, desempenham nesta imagem idealizada dos corredores. A convivência durante um ano com os atletas deste grupo mostrou que corredores iniciantes e iniciados não compartilham a mesma imagem idealizada do que é ser um corredor amador. Cada um deles constrói a sua própria fantasia de atleta , ou seja, se relaciona com a corrida e com o grupo de corrida através de diferentes simbologias. Neste sentido, não apenas as marcas de tênis, mas também os grupos de corrida, são marcas que carregam distintos significados incorporados ou construídos pelos próprios corredores, constituindo as fantasias de atleta

Made available in DSpace on 2016-04-26T14:56:27Z (GMT). No. of bitstreams: 1 renata lima.pdf: 1488304 bytes, checksum: ac63cb565b8e8e01ea02f4ca2d38d8e5 (MD5) Previous issue date: 2007-06-14 / The main objective of this research was to describe and analyze the image that amateur runners, members of the runners´ team Run & Fun, in São Paulo, have of themselves: how they perceive themselves as runners and what are the values that characterize and unite them. An ethnographic research was conducted during one year in which the runners´ routine and their relationship among themselves and with the trainers were observed and described, as well as their clothes (the team´s uniform and the sneakers). Considering that there are beginner and initiate runners in the group, this research tried to identify if both kinds of runners share the same image or if beginner´s image is built by their companionship with initiate runners. The research also tried to identify the role that the main sneakers´ brands, Asics, Mizuno and Nike, play in the idealized runners´ image. Living together with these athletes during one year revealed that beginners and initiates do not share the same idealized image of being an amateur runner. Each of them create their own athlete´s fantasy . In other words, they use different symbols to be connected with running and with the runners´ team. In a sense, sneakers´ brands and runners´ teams are brands that have different meanings built up by the runners to create their athlete´s fantasies / Esta pesquisa teve como objetivo descrever e analisar a imagem que os corredores amadores participantes do grupo de corrida Run & Fun, em São Paulo, fazem de si: como eles se vêem e que valores os caracterizam e os unem. Para tal, foi realizada uma pesquisa etnográfica durante um ano, em que se observou e descreveu a rotina dos corredores e seus relacionamentos entre si, com os treinadores e a vestimenta usada (o uniforme e o tênis). Considerando que existem corredores iniciantes e corredores experientes ou iniciados no grupo, a pesquisa buscou identificar se ambos compartilham uma mesma imagem ou se a imagem dos corredores iniciantes é construída ao longo do tempo, através da convivência com corredores iniciados. A pesquisa também buscou analisar o papel que as principais marcas de tênis, Asics, Mizuno e Nike, desempenham nesta imagem idealizada dos corredores. A convivência durante um ano com os atletas deste grupo mostrou que corredores iniciantes e iniciados não compartilham a mesma imagem idealizada do que é ser um corredor amador. Cada um deles constrói a sua própria fantasia de atleta , ou seja, se relaciona com a corrida e com o grupo de corrida através de diferentes simbologias. Neste sentido, não apenas as marcas de tênis, mas também os grupos de corrida, são marcas que carregam distintos significados incorporados ou construídos pelos próprios corredores, constituindo as fantasias de atleta

Le thème central de cette thèse est le plongement des espaces métriques dans les espaces de Banach. Les principaux plongements étudiés sont les plongements grossiers, uniformes ou Lipschitziens. On considère des questions concernant le plongement Lipschitzien de certaines classes d'espaces métriques, notamment les espaces métriques localement finis ou plus généralement les sous-ensembles localement finis des espaces de Banach Lp, avec 1<= p <= [infini]. Ces questions sont étroitement liées à la classification Lipschitzienne des espaces de Banach. Les plongements grossiers sont un outil clé pour l'étude de plusieurs conjectures célèbres (conjecture de Baum-Connes grossière, conjecture de Novikov grossière...). On mène alors une étude détaillée du plongement grossier, mais aussi uniforme, des espaces métriques propres dans les espaces de Banach sans cotype. Un troisième thème concerne ce qui est appelé le “programme de Ribe” par Manor Mendel et Assaf Naor. Cela consiste en la recherche d'invariants métriques qui caractérisent des propriétés locales des espaces de Banach. Dans cette optique on étudie le plongement de certains arbres.

Made available in DSpace on 2014-06-11T19:27:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-11-21Bitstream added on 2014-06-13T18:47:58Z : No. of bitstreams: 1 malvezzi_mf_me_rcla.pdf: 740200 bytes, checksum: 1e2dd81c00969cce13ef462cc3d0888b (MD5) / O objetivo deste trabalho é apresentar a teoria de sistemas dinâmicos em espaços topológicos uniformes. Como uma aplicação, mostraremos a construção de um fluxo para equações diferenciais ordinárias não autônomas e, utilizando a teoria de dinâmica topológica abordada, daremos enfoque ao estudo de estabilidade de soluções e à investigação de condições que garantem a existência de soluções periódicas ou quase periódicas / The purpose of this work is to present the theory of dynamical systems in uniform topological spaces. As an application, we will show the construction of a flow for nonautonomous ordinary differential equations and, by using the theory of topological dynamics discussed, we will focus on the study of stability of solutions and on the investigation for conditions that guarantee the existence of periodic or almost periodic solutions

Orientador: Suzete Maria Silva Afonso / Banca: Everaldo de Mello Bonotto / Banca: Marta Cilene Gadotti / Resumo: O objetivo deste trabalho é apresentar a teoria de sistemas dinâmicos em espaços topológicos uniformes. Como uma aplicação, mostraremos a construção de um fluxo para equações diferenciais ordinárias não autônomas e, utilizando a teoria de dinâmica topológica abordada, daremos enfoque ao estudo de estabilidade de soluções e à investigação de condições que garantem a existência de soluções periódicas ou quase periódicas / Abstract: The purpose of this work is to present the theory of dynamical systems in uniform topological spaces. As an application, we will show the construction of a flow for nonautonomous ordinary differential equations and, by using the theory of topological dynamics discussed, we will focus on the study of stability of solutions and on the investigation for conditions that guarantee the existence of periodic or almost periodic solutions / Mestre

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-11-01T21:51:37Z No. of bitstreams: 1 AlexandreBarbosaBruno_DISSERT.pdf: 10742068 bytes, checksum: 8856afbc18039f28f1ae0f2c51179126 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-11-08T21:56:39Z (GMT) No. of bitstreams: 1 AlexandreBarbosaBruno_DISSERT.pdf: 10742068 bytes, checksum: 8856afbc18039f28f1ae0f2c51179126 (MD5) / Made available in DSpace on 2017-11-08T21:56:39Z (GMT). No. of bitstreams: 1 AlexandreBarbosaBruno_DISSERT.pdf: 10742068 bytes, checksum: 8856afbc18039f28f1ae0f2c51179126 (MD5) Previous issue date: 2017-08-07 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A radia??o t?rmica ? um mecanismo de transfer?ncia de calor muito importante em processos que envolvem gases participantes, como CO2 e H2O, em temperaturas elevadas. Contudo, a solu??o exata linha-por-linha da transfer?ncia de calor por radia??o em gases participantes ? computacionalmente dispendiosa. Uma das formas de abordagem para esse tipo de problema consiste na utiliza??o dos m?todos de distribui??o-k, como o FSK e SLW, os quais s?o exatos quando aplicados a meios uniformes, mas possuem limita??es no tratamento de meios n?o-uniformes. A aplica??o do m?todo FSK a meios n?o-uniformes requer a ado??o da hip?tese de k-correlacionado (resultando no m?todo FSCK, Full spectrum correlated-k). Isso resulta em um erro devido ao fato dos coeficientes de absor??o de meios reais n?o serem verdadeiramente correlacionados. Diante disto, este trabalho prop?e e investiga uma nova abordagem para considerar meios n?o-uniformes utilizando o m?todo FSK e que n?o requer a hip?tese de k-correlacionado. O m?todo FSK aplicado em conjunto com a abordagem proposta foi denominado FSAK, (Full spectrum averagedk). Com o objetivo de demonstrar a aplica??o do novo m?todo e analisa-lo, o mesmo foi utilizado na solu??o de uma s?rie de casos teste envolvendo gases compostos por CO2 e esp?cies n?o participantes. Os resultados obtidos com o m?todo FSAK foram mais precisos na presen?a de gradientes de temperatura e concentra??o das esp?cies qu?micas mais elevados, condi??es em que o FSCK torna-se menos preciso. Tamb?m verificou-se que o uso de diferentes procedimentos para o c?lculo do coeficiente de absor??o do m?todo FSAK resultam em significativas diferen?as entre os resultados, demonstrando que diferentes procedimentos para o c?lculo desses coeficientes podem levar a diferentes n?veis de precis?o, indicando que procedimentos para o c?lculo da m?dia que tornem o m?todo mais preciso poder?o ser encontrados em futuros trabalhos de pesquisa. / Thermal radiation is a very important mechanism of heat trasnfer in processes that contains participating gases, as CO2 and H2O, at high temperature. However, exact lineby- line solution of radiation heat transfer in participating media is highly computer time consuming due to the dependence of the radiative properties with the wavenumber. A manner to approach such a problem is employing k-distribution methods, as FSK and SLW, which are exact when applied to uniform media, but have limitations in the treatment of non-uniform media. The application of the FSK method to non-uniform media requires the k-correlated assumption (resulting in the FSCK method). This leads to error due the fact that the absorption coefficients of real media are not truly correlated. Therefore, this work proposes and investigates a new approach to solve non-uniform media using the FSK method and which does not require the k-correlated assumption. The FSK method applied with this new approach was labeled FSAK (Full spectrum averaged-k distribution). The method was used to solve a series of problems involving gases composed of CO2 and non-participating species. The results obtained with the FSAK method were more accurate when temperature and species mole fraction gradients where high. It has also been verified that different procedures can be used to average the absorption coefficient, and that the procedure highly influences the accuracy of the results, indicating that averaging procedures to increase the method accuracy could be found in further research works.

Made available in DSpace on 2014-07-29T16:02:16Z (GMT). No. of bitstreams: 1 Dissertacao ana paula faria machado.pdf: 253816 bytes, checksum: 17cd09106048916ae2c14d5f373c0dff (MD5) Previous issue date: 2008-02-15 / In this dissertation we define geometrically uniform codes in Euclidean spaces, presenting some symmetrical properties of these codes. Build geometrically uniforme partitions and starting these we define generalized coset codes. We generalize the concept of geometrically uniform codes to hyperbolic spaces. We show a characterization of generalized coset codes through the concept of G-linear codes. / Nesta dissertação definimos códigos geometricamente uniformes em espaços euclideanos, apresentando algumas propriedades simétricas destes códigos. Construímos partições geometricamente uniformes e a partir destas definimos classes laterais de códigos generalizadas. Estendemos aos espaços hiperbólicos o conceito de códigos geometricamente uniformes. Mostramos também uma caracterização de classes laterais generalizadas através do conceito de códigos G-lineares.

Orientadores: Daniela Mariz Silva Vieira, Jorge Tulio Mujica Ascui / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Matemática, Estatística e Computação Científica / Made available in DSpace on 2018-08-19T00:22:09Z (GMT). No. of bitstreams: 1 Nachtigall_Cicero_D.pdf: 625263 bytes, checksum: 7dc27b9956ffbb6e717aa95776b7b8c8 (MD5) Previous issue date: 2011 / Resumo: O resumo, na íntegra, poderá ser visualizado no texto completo da tese digital. / Abstract: The complete abstract is available with the full electronic digital thesis or dissertations. / Doutorado / Matematica / Doutor em Matemática

The Heston stochastic volatility model is one extension of the Black-Scholes model which describes the money markets more accurately so that more realistic prices for derivative products are obtained. From the stochastic differential equation of the underlying financial product a partial differential equation (p.d.e.) for the value function of an option can be derived. This p.d.e. can be solved with the finite difference method (f.d.m.). The stability and consistency of the method is examined. Furthermore a boundary condition is proposed to reduce the numerical error. Finally a non uniform structured grid is derived which is fairly optimal for the numerical result in the most interesting point. / Das stochastische Volatilitaetsmodell von Heston ist eines der Erweiterungen des Black-Scholes-Modells. Von der stochastischen Differentialgleichung fuer den unterliegenden Prozess kann eine partielle Differentialgleichung fuer die Wertfunktion einer Option abgeleitet werden. Es wird die Loesung mittels Finiter Differenzenmethode untersucht (Konsistenz, Stabilitaet). Weiterhin wird eine Randbedingung und ein spezielles nicht-uniformes Netz vorgeschlagen, was zu einer starken Reduzierung des numerischen Fehlers der Wertfunktion in einem ganz bestimmten Punkt fuehrt.

Résumé L’accumulation de sédiments sur le fond des égouts à faible pente est une contrainte au bon fonctionnement hydraulique et à la gestion des réseaux d’assainissement unitaire. Le recours à la chasse hydraulique est alors une pratique envisagée par les gestionnaires de réseau pour le nettoyage des canaux souterrains. Les processus de transport sédimentaire dans les réseaux d’assainissement unitaire est rendu complexe en raison du jeu de nombreux phénomènes tels que la variabilité de l’étendue granulométrique des sédiments et la cohésion. La thèse présente les résultats expérimentaux et numériques obtenus avant et après une chasse hydraulique réalisée dans le réseau unitaire parisien. Une campagne de mesures a permis d’acquérir des données hydro-sédimentaires à haute résolution, permettant de caractériser et quantifier les processus d’érosion, de transport et de sédimentation agissant sous l’effet de la chasse hydraulique, du reste performante dans le nettoyage du réseau étudié. Deux modèles de transport sédimentaire comportant un modèle simple en condition de transport uniforme, et un modèle plus complexe impliquant le transport non-uniforme ont été développés afin de mettre en place un outil prédictif des mouvements des particules solides pendant le phénomène de chasse. Les deux modèles ont été capables d’évaluer à différents niveaux de précision l’efficacité de la chasse hydraulique en termes de transport sédimentaire. La comparaison des résultats issus des deux modèles permet de déterminer les avantages et les contraintes de chacun, révélant ainsi l’importance de prendre en compte l’hétérogénéité texturale des dépôts dans l’analyse de l’érosion, du transport et de la sédimentation des particules solides sous l’effet des chasses hydrauliques. De plus, une analyse de sensibilité de la gamme d’application de certains paramètres d’entrée du modèle de transport non-uniforme des sédiments a été réalisée. Les résultats ont confirmé le bon fonctionnement du modèle. / Sediment accumulation on the invert of sewer channels has been recognized as one of the important sources of problems for the management of sewer networks.In the two most recent decades, flushing has been put forward as one of the most common methods of sewer cleaning, to limit sediment accumulation especially in large trunk sewers.Sewer sediment transport processes are not fully understood yet, due to numerous unknown variables and difficult measuring conditions. The current research aimed firstly to setup a field experimental campaign to obtain high-quality data. This data allowed understanding of the processes associated with flushing operation in sewers. In addition, this study aimed to model the flushing processes properly in order to set-up an adequate and practical numerical tool able to predict sediment removal of flushing in the sewer network of Paris. To this purpose, two models were used: (i) a simple model for uniform sediment transport, which is the most common used approach; and (ii) a more complex model for non-uniform sediment transport of mixtures. A comparative analysis was carried out to highlight advantages and drawbacks of either. Overall, the results pointed out that the numerical modelling is able to reproduce faithfully hydrodynamics and sediment transport during flushing operations. In fact, both models enabled evaluation of flush behaviour and associated sediment transport. However, despite its higher complexity and computational burden, the latter model provides better insight into the prediction of the removal effectiveness of flushes