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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.
1

Função exponencial e logarítmica / Function exponential and logarithmic

Silva, Rodrigo Felipe da [UNESP] 08 July 2016 (has links)
Submitted by Rodrigo Felipe da Silva null (rodrigofelipeww@hotmail.com) on 2016-08-29T00:06:15Z No. of bitstreams: 1 dissertacao final.pdf: 3098255 bytes, checksum: 38c69f33c20861a5bc6a8a6953fa8352 (MD5) / Approved for entry into archive by Ana Paula Grisoto (grisotoana@reitoria.unesp.br) on 2016-08-30T16:52:00Z (GMT) No. of bitstreams: 1 silva_rf_me_sjrp.pdf: 3098255 bytes, checksum: 38c69f33c20861a5bc6a8a6953fa8352 (MD5) / Made available in DSpace on 2016-08-30T16:52:00Z (GMT). No. of bitstreams: 1 silva_rf_me_sjrp.pdf: 3098255 bytes, checksum: 38c69f33c20861a5bc6a8a6953fa8352 (MD5) Previous issue date: 2016-07-08 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / No ensino da matemática um dos assuntos mais desa adores aos alunos do Ensino Médio é o de funções exponenciais e logarítmicas, sendo que grande parte dos alunos possuem difi culdades de compreensão e resolução dos exercícios propostos. Dessa maneira o trabalho em tela tem como objetivo precípuo o ensino de funções exponenciais e logarítmicas, visando apresentar aos docentes a possibilidade de ensinar o conteúdo de maneira mais atrativa e acessível aos seus alunos. Para tanto, a pesquisa se valeu de levantamento bibliográ fico e documental acerca da temática abordada. Salienta-se que ao iniciar o ensino de funções é preciso fazer um resgate histórico do conteúdo, buscando desvelar suas origens. Posteriormente o trabalho traz as concepções do tema segundo os documentos o ciais. A m de concretizar o estudo trabalha-se com o uso das defi nições aritméticas e geométricas, pois são fundamentais para o entendimento das funções, e também com situações problema contextualizadas, buscando envolver os alunos no processo de ensino aprendizagem promovendo o levantamento de hipóteses e consolidando a aprendizagem. Essas situações problemas serão difundidas por meio de atividades propostas nas quais pretende-se explorar a caracterização da função logarítmica e exponencial, buscando relacioná-las ao contexto do educando, em situações que poderiam ocorrer em seu cotidiano, para isso propomos alguns exemplos de atividades, como: a utilização do BRO ce Calc no Ensino de potenciação com números irracionais, o jogo de xadrez, mágica do baralho e a resolução de problemas da OBMEP e do ENEM. / In teaching mathematics one of most challenging subjects to middle school students is of exponential and logarithmic functions, being that most of the students have difficulties in understanding and addressing the proposed exercises. In this way the work on canvas aims foremost teaching of exponential and logarithmic functions, n order to present to teachers the possibility to teach the content more attractive and accessible to his students. To this end, the research used for bibliographical and documental about the theme addressed.It should be noted that the starting teaching duties must make a historic rescue of the contents, looking for their origins unveiling. In order to implement the study works with the use of arithmetic and geometric definitions, because they are fundamental to the understanding of the functions, and also with contextualized problem situations, seeking to engage students in teaching learning process promoting the survey of hypotheses and consolidating learning. These problems will be disseminated through activities in which it is intended to explore the characterization of logarithmic and exponential function, seeking to relate them to the context of educating, in situations that could occur in their daily lives, for this we propose some examples of activities, such as: libreoffice Calc use in teaching empowerment with irrational numbers, the game of chess, magic of the deck and the troubleshooting of OBMEP and ENEM.
2

Aplicação veicular da manutenção centrada em confiabilidade. / Vehicular application of reliability centered maintenance.

Moreira, Luiz Antonio Corvello Fraga 03 August 2010 (has links)
Estudos têm sido conduzidos para a implantação da Manutenção Centrada em Confiabilidade em sistemas complexos, seja com o intuito de aumentar a segurança das pessoas envolvidas e do meio ambiente ao redor das instalações, seja com o intuito de diminuir os custos de manutenção envolvidos. Tem destaque nestes estudos o inicial com a implantação em aeronaves da aviação civil e militar, a indústria espacial e também as instalações nas plantas de geração de energia elétrica, especialmente as movidas à energia nuclear. Este trabalho foi conduzido para implantar o sistema de Manutenção Centrada em Confiabilidade na área veicular, especialmente em frotas sob controle e de determinados veículos que trafegam em locais inóspitos e de difícil acesso para resgate em caso de falha. Um levantamento estatístico foi executado e a vida útil da bomba de água no estudo de caso foi determinada, sendo recomendada uma inspeção nas mesmas. A conclusão a que se chegou é de que é sim possível, em determinados componentes, implantar a Manutenção Centrada em Confiabilidade, realizando-se a análise de vida e a especificação de um tempo correto para a inspeção e troca do componente antes de sua falha, que pode ser crítica, trazendo prejuízos a outras partes dos veículos. / Studies have been conducted for the implementation of Reliability Centered Maintenance in complex systems, is aiming to increase the safety of those involved and environment around the facility, either in order to reduce maintenance costs involved. These studies have highlighted the initial deployment in airplanes of civilian and military aviation, space industry and also in the plants to generate electricity, especially those powered by nuclear energy. This study was conducted to establish the Reliability Centered Maintenance system in the vehicle area, especially in fleets under control and certain vehicles that travel in places inhospitable and inaccessible for rescue in case of a failure. A statistical survey was performed and the useful life of water pump in the case study has been determined and recommended an inspection in them. The conclusion is that it is indeed possible in certain components, deploy the Reliability Centered Maintenance, performing the age exploration and the specification of a correct time for inspection and replacement of the component before its failure, which can be critical, causing damages to other vehicle parts.
3

Quelques Modèles de Visualisation pour l'Analyse des Applications Parallèles

Schnorr, Lucas 26 October 2009 (has links) (PDF)
Les systèmes distribués, tels que les grilles, sont utilisés aujourd'hui pour l'exécution des grandes applications parallèles. Quelques caractéristiques de ces systèmes sont l'interconnexion complexe de ressources qui pourraient être présent et de la facile passage à l'échelle. La complexité d'interconnexion vient, par exemple, d'un nombre plus grand de directives de routage pour la communication entre les processus et une latence variable dans le temps. La passage à l'échelle signifie que des ressources peuvent être ajoutées indéfiniment simplement en les reliant à l'infrastructure existante. Ces caractéristiques influencent directement la façon dont la performance des applications parallèles doit être analysée. Les techniques de visualisation traditionnelles pour cette analyse sont généralement basées sur des diagrammes de Gantt que disposent la liste des composants de l'application verticalement et metent la ligne du temps sur l'axe horizontal. Ces représentations visuelles ne sont généralement pas adaptés à l'analyse des applications exécutées en parallèle dans les grilles. La première raison est qu'elles n'ont pas été conçues pour offrir aux développeurs une analyse qui montre aussi la topologie du réseau des ressources. La deuxième raison est que les techniques de visualisation traditionnels ne s'adaptent pas bien quand des milliers d'entités doivent être analysés ensemble. Cette thèse tente de résoudre les problèmes des techniques traditionnelles dans la visualisation des applications parallèles. L'idée principale est d'exploiter le domaine de la visualisation de l'information et essayer d'appliquer ses concepts dans le cadre de l'analyse des programmes parallèles. Portant de cette idée, la thèse propose deux modèles de visualisation: les trois dimensions et le modèle d'agrégation visuelle. Le premier peut être utilisé pour analyser les programmes parallèles en tenant compte de la topologie du réseau. L'affichage lui-même se compose de trois dimensions, où deux sont utilisés pour indiquer la topologie et la troisième est utilisée pour représenter le temps. Le second modèle peut être utilisé pour analyser des applications parallèles comportant un très grand nombre de processsus. Ce deuxième modèle exploite une organisation hiérarchique des données utilisée par une technique appelée Treemap pour représenter visuellement la hiérarchie. Les implications de cette thèse sont directement liées à l'analyse et la compréhension des applications parallèles exécutés dans les systèmes distribués. Elle améliore la compréhension des modes de communication entre les processus et améliore la possibilité d'assortir les motifs avec cette topologie de réseau réel sur des grilles. Bien que nous utilisons abondamment l'exemple de la topologie du réseau, l'approche pourrait être adapté, avec presque pas de changements, à l'interconnexion fourni par un middleware d'une interconnexion logique. Avec la technique d'agrégation, les développeurs sont en mesure de rechercher des patterns et d'observer le comportement des applications à grande échelle.
4

Aplicações da geometria analítica na resolução de problemas

Lacerda, Assiclero Cavalcante Teotonio de 28 August 2015 (has links)
Submitted by ANA KARLA PEREIRA RODRIGUES (anakarla_@hotmail.com) on 2017-09-08T13:45:16Z No. of bitstreams: 1 arquivototal.pdf: 2316803 bytes, checksum: 4afe1f4487df04301a81d79b610a82d7 (MD5) / Approved for entry into archive by ANA KARLA PEREIRA RODRIGUES (anakarla_@hotmail.com) on 2017-09-08T13:51:53Z (GMT) No. of bitstreams: 1 arquivototal.pdf: 2316803 bytes, checksum: 4afe1f4487df04301a81d79b610a82d7 (MD5) / Made available in DSpace on 2017-09-08T13:51:53Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 2316803 bytes, checksum: 4afe1f4487df04301a81d79b610a82d7 (MD5) Previous issue date: 2015-08-28 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / The present work it is a proposal of approach of Analytic Geometry to be used as a tool on resolution of problens in general. The Analitic Geometry has its greater value axacty where it is unespected, in aplications in other branches of exact ecience. The purpose it is to shou hom the Analytic Geometry can be applied, and hau ea we do to emplasize to students thal the Analytic Geometry is not a part of Matematics which ends itself. We will mak vector approach, when it is convinient making the statments in formulas and resolutions of problens, become more simple. We beliave that making a articulation between Analytic Geometry and its application, in a very natural way, we are improving, the level of students learning. / O presente trabalho é uma proposta de abordagem da Geometria Analítica, para ser usada como ferramenta na resolução de problemas em geral. A Geometria Anal ítica tem seu maior valor, exatamente onde ela é inesperada, nas aplicações em outros ramos das ciência exatas. O objetivo é mostrar como a Geometria Analítica pode ser aplicada, e como podemos fazer para enfatizar para o aluno que ela não é uma parte da Matemática que se encerra em si mesma. Faremos uma abordagem vetorial, quando for conveniente, fazendo com que as demostrações de fórmulas e resoluções dos problemas se tornem mais simples. Acreditamos que fazendo uma articula ção entre a Geometria Analítica e suas aplicações, de uma forma bem natural, estaremos melhorando o nível de aprendizagem dos alunos.
5

Aplicação veicular da manutenção centrada em confiabilidade. / Vehicular application of reliability centered maintenance.

Luiz Antonio Corvello Fraga Moreira 03 August 2010 (has links)
Estudos têm sido conduzidos para a implantação da Manutenção Centrada em Confiabilidade em sistemas complexos, seja com o intuito de aumentar a segurança das pessoas envolvidas e do meio ambiente ao redor das instalações, seja com o intuito de diminuir os custos de manutenção envolvidos. Tem destaque nestes estudos o inicial com a implantação em aeronaves da aviação civil e militar, a indústria espacial e também as instalações nas plantas de geração de energia elétrica, especialmente as movidas à energia nuclear. Este trabalho foi conduzido para implantar o sistema de Manutenção Centrada em Confiabilidade na área veicular, especialmente em frotas sob controle e de determinados veículos que trafegam em locais inóspitos e de difícil acesso para resgate em caso de falha. Um levantamento estatístico foi executado e a vida útil da bomba de água no estudo de caso foi determinada, sendo recomendada uma inspeção nas mesmas. A conclusão a que se chegou é de que é sim possível, em determinados componentes, implantar a Manutenção Centrada em Confiabilidade, realizando-se a análise de vida e a especificação de um tempo correto para a inspeção e troca do componente antes de sua falha, que pode ser crítica, trazendo prejuízos a outras partes dos veículos. / Studies have been conducted for the implementation of Reliability Centered Maintenance in complex systems, is aiming to increase the safety of those involved and environment around the facility, either in order to reduce maintenance costs involved. These studies have highlighted the initial deployment in airplanes of civilian and military aviation, space industry and also in the plants to generate electricity, especially those powered by nuclear energy. This study was conducted to establish the Reliability Centered Maintenance system in the vehicle area, especially in fleets under control and certain vehicles that travel in places inhospitable and inaccessible for rescue in case of a failure. A statistical survey was performed and the useful life of water pump in the case study has been determined and recommended an inspection in them. The conclusion is that it is indeed possible in certain components, deploy the Reliability Centered Maintenance, performing the age exploration and the specification of a correct time for inspection and replacement of the component before its failure, which can be critical, causing damages to other vehicle parts.
6

Analýza trhu mobilních vzdělávacích aplikací zaměřených na děti předškolního věku / Market Analysis of Mobile Educational Applications for Preschool Children

Blahušová, Anežka January 2015 (has links)
The thesis is devoted to the topic of mobile applications focusing on educational applications for preschoolers. The introductory part deals with the theory of application ecosystem, purchase decision-making process, and marketing of mobile applications. The following chapters are focused on primary and secondary research. The aim of thesis is to analyze the situation on mobile application market worldwide and in the Czech Republic with a focus on educational applications for children. More importantly, it intends to reveal parent's attitudes toward downloading applications for their children up to age six. The conclusion is a summary of acquired knowledge and the proposal of possible measures resulting from the research.
7

Výzkum vhodnosti různých aplikací multimediální kabeláže / Research into the appropriateness of diverse multimedia cabling applications

Tichý, Ondřej January 2008 (has links)
The reader can find a summary of metallic structured cabling in this thesis. It means there is described progress of this cabling and the specifications of the cabling systems. There are also described all types of these cables and some of connectors. The types of cable are summed in the table at the end of this part. In another part there are shown some aplications used for structured cabling. In the futher part there are described tests defined in the specifications in more detail. The most importatnt part of this thesis is focused on various tests. Firstly, there were chosen typical representative of the cables. It was: the data cable (Category 6), S/STP and MediaTwist cable. These cables were underwent the standard tests described above and theirs results are appended on the attached CD. In the last part of this thesis there are intrinsic tests of fitness cables to the multimedia signal. Of course, the tests were chosen to measure cable to obtain the most suitable type of cable. However, these tests were not standard measurement. There were simulated occasions from the practise. The goals of this thesis were to achieve the results, to compare them between each other and to make a decision, which cable is the most suitable for the multimedia signal. Definitely, this thesis should be sufficient at least for people who keep track of structured cabling. Eventually, the clear decision was made from these testings. MediaTwist cable is the most suitable type for the multimedia signal, because the signal is being recognized correctly in almost every case even if the long length. The result from the testings in more detail can be found at the very end of this thesis. So, if you are interested, please, continue in reading.
8

Fotovoltaický systém pro RAPS aplikace / Photovoltaic system for RAPS applications

Nevoral, Miroslav January 2011 (has links)
The beginning of this work presents the basic principles of photovoltaic cells, their advantages and disadvantages. There is also an overview of photovoltaic systems. The next part takes a closer look on lead-acid accumulators followed by a practical part regarding the measurement of VA characteristics. The main goal of this work is to assemble an experimental PV system. It will consist of a PV module, an accumulator (consisting of two cells connected in series and producing an overall voltage of 5V) and of a variable load (assembled from nineteen resistors with resistance varying from tens to hundreds of Ohms). This system is connected to a computer that runs the control software which was created using the VEEPro 8.0 simulation environment. The measurements can be taken in two ways. Either the operator can select the load resistor combinations manually, or the operator only launches the measurement and the load is selected automatically by the software. This way we obtain an automatized workplace for measuring VA characteristics of photovoltaic panels.
9

Aplikace metody ANP v pivovarnictví / ANP methods in brewing industry

Geschmay, Pavel January 2008 (has links)
Thesis applies methods of ANP in brewing industry. It concentrates on Czech beer market and small local brewery in Policka. Main goal of the thesis is to apply the methods in real life problems from the chosen segment. Work consists of several chapters. First chapter defines the goals of the thesis and describes situation in Policka brewery. Second deals with theory around ANP processes. Third chapter is the main part of the thesis. It applies the theory by solving concrete problems. Last chapter analyzes the results.
10

Studium vlastností vrstvy uhlíkaté oceli navařené vysokovýkonným polovodičovým laserem / Study of properties of layers of carbon steel cladded by high-power semiconductor laser

Segeťa, Petr January 2014 (has links)
The aim of my thesis is the analysis of properties of laser cladding. The theoretical part is focus on conventional methods of laser cladding, types and properties of lasers and its applications in industry. Then there is the description of preparing metallographic samples and its assessment, also there are types of wear enclosed. In the experimental part the nickel laser cladding were made by using semiconductor laser, in which the structure, the dilution, the EDS analysis and the hardness with respect to input parameters are assessed.

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