Submitted by VIVIAN VENTURA FERREIRA LUIZ (vivisventura@gmail.com) on 2018-06-14T17:51:35Z No. of bitstreams: 1 dissertacao.pdf: 1531949 bytes, checksum: 577b1199d5fc233ab7cc7e672975849a (MD5) / Approved for entry into archive by Hellen Sayuri Sato null (hellen@ift.unesp.br) on 2018-06-15T17:55:01Z (GMT) No. of bitstreams: 1 luiz_vvf_me_ift.pdf: 1531949 bytes, checksum: 577b1199d5fc233ab7cc7e672975849a (MD5) / Made available in DSpace on 2018-06-15T17:55:01Z (GMT). No. of bitstreams: 1 luiz_vvf_me_ift.pdf: 1531949 bytes, checksum: 577b1199d5fc233ab7cc7e672975849a (MD5) Previous issue date: 2017-09-15 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / O problema da matéria escura é uma das questões abertas da cosmologia e da física de partículas. Inúmeras observações, em diferentes escalas astronômicas, sustentam que a quantidade de matéria luminosa presente não é capaz de explicar o comportamento observado. A solução para esta inconsistência foi obtida através da introdução de uma nova forma de matéria que, não interagindo com a luz, foi intitulada por matéria escura. O Modelo Padrão da Cosmologia indica que esta componente contribui com mais de 80% da densidade de matéria no Universo, deve ser estável, não relativística e sua densidade relíquia deve combinar com as medidas obtidas pelas flutuações da CMB. Apesar disso, a natureza da matéria escura ainda é um mistério. Entre as partículas candidatas à matéria escura os mais populares são os chamados WIMPs. Esta espécie é considerada uma relíquia térmica e podem fornecer uma abundância compatível com a observada. Nesta direção, o presente trabalho então, trata uma extensão do Modelo Padrão da Física de Partículas, uma vez que este modelo não fornece nenhuma partícula apropriada à matéria escura, chamada Modelo do Dubleto Inerte, que é obtido adicionando um novo dubleto escalar por meio de uma simetria Z_2 que desenvolve uma configuração de vácuo trivial. Dentro do novo espectro de partículas estudamos aquela que parece propor um candidato viável à matéria escura. / The problem of dark matter is one of the open questions of cosmology and particle physics. Several observations, at different astronomical scales, maintain that the amount of light matter present is not able to explain the observed behavior. The solution to this inconsistency was obtained by introducing a new form of matter which, not interacting with light, was titled as dark matter. The Standard Model of Cosmology indicates that this component contributes with more than 80% of the matter density in the Universe, must be stable, non relativistic and its relic density should match with the measurements obtained by the fluctuations of the CMB. Despite this, the nature of dark matter is still a mystery. Among the candidate particles for dark matter the most popular are the so-called WIMPs. This species is considered a thermal relic and can provide an abundance compatible with that observed. In this direction, the present work then deals with an extension of the Standard Model of Particle Physics, since this model does not provide any particle appropriate to dark matter, called Inert Doublet Model, which is obtained by adding a new scalar doublet through a Z_2 symmetry that develops a trivial vacuum configuration. Inside this new spectrum of particles we study the one that seems to propose a viable candidate to the dark matter.

Made available in DSpace on 2015-05-14T12:09:12Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 10002262 bytes, checksum: 076b1398c610f993f356d94a37cd0774 (MD5) Previous issue date: 2012-09-28 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / This work shows (a) how the urban extensions covering 50 or more hectares contributed to the physical growth of João Pessoa, the capital of Paraíba, Brazil, between 1913 and 1953, and (b) that they generated most of the urban and suburban fabric that was added to the town in that period of time. It analyzes in depth these additions, treating aspects such as features of the site, layout characteristics and integration between the layout and the nearby tissues. Such a study had not been conducted yet and is essential for the local urban history. The theoretical basis of the dissertation is the analysis of over twenty large extensions planned in Europe and the Americas which it presents. The method adopted for the carrying out of the most relevant part of the study of the additions was the morphological analysis of their layout. Seven extensions added 770 hectares to the town between 1913 and 1953, which is over 50% of its overall extension in that period. Curiously the two extension plans which were not implemented were just those designed by two famous Brazilian town-planners: Saturnino de Brito and Nestor de Figueiredo. / Esta dissertação mostra (a) como as expansões planejadas com 50 ou mais hectares contribuíram para o crescimento físico da capital paraibana entre 1913 e 1953 e (b) que foram elas a origem da maior parte do tecido urbano ou suburbano agregado à cidade nesse período. Ela analisa com profundidade essas ampliações, tratando as-pectos como traços geográficos do sítio planejado, características do traçado e seu nível de integração com os tecidos adjacentes. Tal estudo não havia sido feito ainda e é essencial para a história urbanística de João Pessoa. O alicerce teórico da disserta-ção é o exame que ela fez de mais de vinte grandes expansões projetadas na Europa e nas Américas até 1910. O método adotado para a realização da parte mais relevante do estudo das expansões foi a análise morfológica dos seus planos. Sete grandes am-pliações agregaram 770 hectares à cidade entre 1913 e 1953, o que é mais da metade da expansão total dela nesse intervalo. Dois planos de expansão não se concre-tizaram, exatamente os concebidos por dois urbanistas respeitados: Saturnino de Brito e Nestor de Figueiredo.

Um anel noetheriano S satisfaz a propriedade ( ) se todas as extens~oes essenciais c clicas de S-m odulos simples s~ao artinianas. An eis noetherianos com esta propriedade veri cam a Conjectura de Jacobson, que e um famoso problema em aberto em teoria de an eis. Neste trabalho investigamos esta propriedade em an eis de operadores diferenciais R[ ; ], onde R e um anel comutativo noetheriano e uma deriva c~ao de R. Mais especi camente, estudamos condi c~oes necess arias e su cientes para que R[ ; ] satisfa ca ( ), quando R e um anel -simples e, tamb em, no caso em que este e um anel -primitivo. Al em disso, caracterizamos os an eis de operadores diferenciais C[x; y][ ; ] que satisfazem ( ). / A Noetherian ring S satis es the property ( ) if any cyclic essential extension of simple S-modules are Artinian. Noetherian rings with this property verify Jacobson's Conjecture, which is a famous open problem in ring theory. In this work we investigate this property in di erential operators rings R[ ; ], where R is a commutative Noetherian ring and is a derivation of R. More precisely, we study necessary and su cient conditions for R[ ; ] to satisfy property ( ) whenever R is a -simple ring and also for the case where it is a -primitive ring. Furthermore, we characterize the di erential operator rings C[x; y][ ; ] satisfying ( ).

Provamos que \'C POT. 1\' genericamente difeomorfismos simpléticos ou são Anosov ou possuem entropia topológica limitada por baixo pelo supremo sobre o menor expoente de Lyapunov positivo dos pontos periódicos hiperbólicos. Usando isto exibimos exemplos de difeomorfismos conservativos sobre superfícies que não são pontos de semicontinuidade superior para a entropia topológica. Provamos também que \'C POT. 1\' genericamente difeomorfismos simpléticos não Anosov não admitem extensões simbólicas. Mudando de assunto, Hayashi estendeu um resultado de Mañé, provando que todo difeomorfismo f que possui uma \'C POT. 1\' vizinhança U, onde todos os pontos periódicos de qualquer g \'PERTENCE A\' U são hiperbólicos, é de fato um difeomorfismo Axioma A. Aqui, provamos o resultado análogo a este no caso conservativo, e a partir deste é possível exibir uma demonstração de um fato \"folclore\", a conjectura de Palis no caso conservativo / We prove that a \'C POT.1\' generic symplectic diffeomorphism is either Anosov or the topological entropy is bounded from below by the supremum over the smallest positive Lyapunov exponent of the periodic points. By means of that we give examples of area preserving diffeomorphisms which are not point of upper semicontinuity of entropy function in \'C POT. 1\' topology. We also prove that \'C POT. 1\'- generic symplectic diffeomorphisms outside the Anosov ones do not admit symbolic extension. Changing of subject, Hayashi has extended a result of Mañé, proving that every diffeomorphism f which has a \'C POT. 1\'-neighborhood U, where all periodic points of any g \'IT BELONGS\' U are hyperbolic, it is an Axiom A diffeomorphism. Here, we prove the analogous result in the volume preserving scenario, and using it we prove a \"folklore\" fact, the Palis conjecture in this context

Cette thèse est centrée autour de la monogénéité de corps de nombres en situation relative puis à la conjecture de Collatz.\newline Premièrement on détermine l'ensemble de classes des générateurs de l'anneau des entiers des certaines extensions relatives de corps de nombres, en utilisant l'algorithme de Gaál & Phost et le logiciel PARI/GP. La deuxième partie propose différents formulations d'une généralisation de la conjecture de Collatz, aux entiers p-adiques. On étudie ensuite le comportement de suites analogues dans le cadre d'anneaux d'entiers de corps de nombres. / This thesis are centered around the monogeneity of number fields in a relative situation and the Collatz conjecture. Firstly, we determine the set of generator classes of the ring of integers of some relative extensions of number fields, using the Gaál& Phost algorithm and the PARI/GP software. The second part proposes different formulations of a generalization of the Collatz conjecture to p-adic integers. We then study the behavior of similar sequences in the framework of rings of integers of number fields.

This thesis presents a quantitative evaluation of an operating system virtualization technology known as Solaris Containers or Solaris Zones, with a special emphasis on measuring the influence of a security technology known as Solaris Trusted Extensions. Solaris Zones is an operating system-level (OS-level) virtualization technology embedded in the Solaris OS that primarily provides containment of processes within the abstraction of a complete operating system environment. Solaris Trusted Extensions presents a specific configuration of the Solaris operating system that is designed to offer multi-level security functionality. Firstly, we examine the scalability of the OS with respect to an increasing number of zones. Secondly, we evaluate the performance of zones in three scenarios. In the first scenario we measure - as a baseline - the performance of Solaris Zones on a 2-CPU core machine in the standard configuration that is distributed as part of the Solaris OS. In the second scenario we investigate the influence of the number of CPU cores. In the third scenario we evaluate the performance in the presence of a security configuration known as Solaris Trusted Extensions. To evaluate performance, we calculate a number of metrics using the AIM benchmark. We calculate these benchmarks for the global zone, a non-global zone, and increasing numbers of concurrently running non-global zones. We aggregate the results of the latter to compare aggregate system performance against single zone performance. The results of this study demonstrate the scalability and performance impact of Solaris Zones in the Solaris OS. On our chosen hardware platform, Solaris Zones scales to about 110 zones within a short creation time (i.e., less than 13 minutes per zone for installation, configuration, and boot.) As the number of zones increases, the measured overhead of virtualization shows less than 2% of performance decrease for most measured benchmarks, with one exception: the benchmarks for memory and process management show that performance decreases of 5-12% (depending on the sub-benchmark) are typical. When evaluating the Trusted Extensions-based security configuration, additional small performance penalties were measured in the areas of Disk/Filesystem I/O and Inter Process Communication. Most benchmarks show that aggregate system performance is higher when distributing system load across multiple zones compared to running the same load in a single zone.

No description available.

This master thesis deals with the topic of browser extensions, their environment and analysis. The goal is to describe the extensions environment, online Webstores, that offers extensions and to show best practices for analysis and optimization of its extensions and their assets. Within the thesis you can find very precise analysis of online Webstores for Google Chrome extensions and Mozilla Firefox add-ons. Conclusions are made based on this analysis that include special characteristics of the previously mentioned browsers. The master thesis consists of two parts, theoretical and practical. The theoretical parts deals with the description of the browser extensions environment and it presents specific characteristics about online Webstores and browser extensions to the reader. In the practical part the thesis is focused on objectives set by the thesis and it presents the results of the Webstore analysis and description of the universal Google Analytics solution that helps developers to analyze their extensions The thesis contributes to the topic mainly with the precise description of the browser Webstores and extensions environment, best practices and recommendations and by creating the universal Google Analytics solutions for the developers.

This master's thesis deals with extensions of TOPSIS method, which is one of methods for multi-criteria evaluation of alternatives. These extensions use theory of fuzzy sets (FS) and their futher extensions to interval-valued (IVFS), intuitionistic (IFS) and hesitant (HFS) fuzzy sets and their combinations (IVIFS, IVIHFS). Significant part of this thesis explains the principle of fuzzy sets and their generalizations. Descriptions of operators for aggregations of grades of membership has very important role here. Next, very short description of multi-criteria evaluation problems and detailed description of TOPSIS method are contained. The second half of this thesis is dedicated to four existing extensions of TOPSIS metod that uses theories of FS, IVFS, IVIFS and IVIHFS. Every method is illustrated with an example that shows principle of calculations. It illustrates new possibilities of the methods that use new sets theories and potential complications and deviations from the original TOPSIS method. At the end of this thesis, evaluation of usefulness of used approaches is mentioned.

Целью работы является разработка фреймворка для создания веб-браузерных расширений. Объектом исследования является класс программных средств для автоматизации и упрощения работы разработчиков с веб-браузерными расширениями. Методы исследования включают: анализ, сравнение и обобщение данных о существующих способах автоматизации разработки веб-браузерных расширений; апробация современных WEB-технологий. Магистерская диссертация содержит 4 главы. В первой главе описаны основные теоретические аспекты предметной области. Вторая глава содержит анализ и описание средств разработки. Третья глава посвящена описанию процесса разработки фреймворка. В четвертой главе представлено описание возможностей фреймворка. Результатом работы является разработанный фреймворк для создания расширений веб-браузера. / The aim of the work is to develop a framework for developing web browser extensions. The object of research is a class of software tools for automating and simplifying the work of developers with web browser extensions. Research methods include analysis, comparison, and generalization of data on existing methods for automating the development of web browser extensions; approbation of modern WEB-technologies. The paper contains 4 chapters. The first chapter describes the main theoretical aspects of the subject area. The second chapter contains an analysis and description of development tools. The third chapter is devoted to describing the framework development process. The fourth chapter presents a description of framework capabilities. The result of the work is the framework for developing web browser extensions.