Dissertations / Theses on the topic 'Junat'
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Sutela, P. (Pauliina). "Junan nopeuden vaikutus rautatieliikenteen aiheuttamaan tärinään." Master's thesis, University of Oulu, 2016. http://urn.fi/URN:NBN:fi:oulu-201605041614.
Full textThe thesis concentrates on train-induced vibration caused by heavy freight trains. Limiting the train speed is the most important mitigation measure of train-induced vibration in Finland at the moment. There are 18 sites with speed limits due to vibration on the Finnish railway network. Speed limits are usually set by first limiting the speed to 60 km/h. If the 60 km/h speed limit seems to have no effect on the vibration the speed is limited to 40 km/h. However, the effects of restricting train speed are rarely studied further. The aim of this research was to find out how restricting train speed affects vibration magnitude and frequency. The hypothesis was that restricting train speed would mitigate vibration. Traffic vibration levels were measured at a test site in Liminka for this research. The site was chosen due to complaints about vibration from the residents. A survey line with four vibration monitors was installed on the ground between the track and a dwelling. In addition, two monitors measured vibration in the house. The survey line was 600 m long. The monitors recorded vibration in all three dimensions for three weeks. During the measurements the passing trains were instructed to drive at different speed in the speed range of 40–70 km/h. The trains in the same weight range were chosen to be studied. The results were evaluated by examining particle vibration velocity and dominant frequency. According to the measurements, restricting the train speed mitigates vibration. However, when the train speed was 58–60 km/h the vibration level grew suddenly higher forming a vibration peak. As the distance from the track grew, the effect of train speed could not be observed due to low vibrations levels. The vibration level in the dwelling house was also low. The train speed had a clear relation to the dominant frequency of the vibration. Increasing the train speed made the frequency higher. This relation could be observed also at longer distances from the track and it be observed in the house as well. The frequency did not depend on the distance. Limiting the train speed mitigates vibration in most cases according to the study. However, when setting the speed limit the possibility of vibration peak occurring at a critical speed should be taken into account. The critical speed is likely to depend on the site. Thus the critical speed found in this study cannot be generalized. Nevertheless, even small changes of the train speed could have significant effects on the vibration
García, de Enterría Javier. "El reglamento de la Junta General." IUS ET VERITAS, 2017. http://repositorio.pucp.edu.pe/index/handle/123456789/123082.
Full textMedeiros, Luiz Gustavo. "Análise de falha em junta soldada." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/21264.
Full textThe bicycle use has been diffused among the population in general, the people started to see it as a way of transport. It has been used both for transportation and for professional cyclists who use it as tool to reach their goals or to win bicycle races. The evolution, both on materials and cycling/bike riding techniques in the second half of last century has changed. In the other hand, fatigue cases which follow some disasters got some relevancy. The first goal was to find some explanation for what happened and how to avoid the problem – the crack, or in some cases the disaster. The cyclism followed the evolution, both on materials, on the road bikes and off-road bikes. Actually many riders know that some samples of bike frames have failed during use or even worse the crack appeared and the frame broke down suddenly. The discussion concerning the bicycle frame resistance doesn’t look finished. The cyclists demands are different. The loads encountered during cycling can be very different comparing on and off-road bikes – Road and Mountain Bike. The start point for the present work involved a sample of a Mountain Bike frame which had failed. The work development was to propose a kind of load which could test the fatigue strength of the material analyzed. The load proposed should be easy to simulate in finite element analysis – FEA, and it must reproduce a normal use condition. The the load were defined, the structure were simulated using a specific software – FEA. Finite element analysis. After the test the responses were collected. The primary goals were to find the location of the main tensile and its measurement in the frame. It coincided exactly with the crack in the real bike frame. Using the normal procedure to predict the fatigue life in the welded joint, the result reached 40% of the fatigue resistance for that joint, considering the load applied. The analysis compared the project resistance to the load to check its capacity to absorb loads igual or above the one which were used. Some riders that are more strength, those who can apply more than the load proposed or even those who are more radical in their way of riding could use the combination of these situations making the load easly amplified by dynamics effects, bumps and high speed for example. This hard condition of use is complex to be reproduced because there isn’t any information concerning strain, speed, angles and the montion that the rider could do when riding a mountain bike.
Aliakbarpour, Maryam. "Learning and testing junta distributions over hypercubes." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101578.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (pages 77-80).
Many tasks related to the analysis of high-dimensional datasets can be formalized as problems involving learning or testing properties of distributions over a high-dimensional domain. In this work, we initiate the study of the following general question: when many of the dimensions of the distribution correspond to "irrelevant" features in the associated dataset, can we learn the distribution efficiently? We formalize this question with the notion of junta distribution. The distribution D over {0, 1}n is a k-junta distribution if the probability mass function p of D is a k-junta-- i. e., if there is a set J [subset][n] of at most k coordinates such that for every x [set membership] {0, 1}7, the value of p(x) is completely determined by the value of x on the coordinates in J. We show that it is possible to learn k-junta distributions with a number of samples that depends only logarithmically on the total number n of dimensions. We give two proofs of this result; one using the cover method and one by developing a Fourier-based learning algorithm inspired by the Low-Degree Algorithm of Linial, Mansour, and Nisan (1993). We also consider the problem of testing whether an unknown distribution is a k-junta distribution. We introduce an algorithm for this task with sample complexity Õ(2n/²k⁴) and show that this bound is nearly optimal for constant values of k. As a byproduct of the analysis of the algorithm, we obtain an optimal bound on the number of samples required to test a weighted collection of distribution for uniformity. Finally, we establish the sample complexity for learning and testing other classes of distributions related to junta-distributions. Notably, we show that the task of testing whether a distribution on {0, 1}n contains a coordinate i [set membership] [n] such that xi is drawn independently from the remaining coordinates requires [theta]](2²n/³) samples. This is in contrast to the task of testing whether all of the coordinates are drawn independently from each other, which was recently shown to have sample complexity [theta](2n/²) by Acharya, Daskalakis, and Kamath (2015).
by Maryam Aliakbarpour.
S.M.
Silva, Rafael Aguera Rezeno da [UNESP]. "Análise de junta aparafusada de biela automotiva." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/137900.
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Em bielas automotivas, os parafusos atuam de maneira a manter a união entre capa e haste, suportando as cargas trativas, compressivas e transversais originadas no olhal maior. Para tais componentes, o dimensionamento de juntas aparafusadas torna-se complexo, visto que a disposição dos parafusos e a geometria do mancal conduzem ao surgimento de esforços excêntricos à face de fratura, elevando a criticidade do projeto. Em vista disso, e do reduzido número de publicações sobre o assunto, o presente trabalho propôs uma “abordagem híbrida” para a análise de juntas aparafusadas em bielas anguladas, utilizando resultados obtidos a partir de um modelo de elementos finitos simplificado e as ferramentas contidas no roteiro VDI 2230 parte 1. Além disso, foi avaliada a influência do fenômeno de abertura unilateral sobre a vida em fadiga dos fixadores utilizados em bielas anguladas, analisando os resultados obtidos de modo a desenvolver um critério de avaliação para a fadiga desses componentes. A despeito das restrições, a abordagem numérico-analítica desenvolvida demostrou-se atraente, tanto pelo baixo custo computacional associado, quanto por sua precisão, principalmente na determinação da força tensora residual mínima para a prevenção de abertura, mostrando-se adequado para processos de otimização multiparamétricos, selecionando designs promissores passíveis de posterior avaliação através de modelos refinados. Já as análises de influência do fenômeno abertura não apresentaram alterações sensíveis nos níveis de força adicional dos fixadores, fato esse relacionado com a posição dos pontos de abertura em relação ao parafuso e ao mancal. Apesar disso, as simulações realizadas demonstraram que as condições de carregamento avaliadas não influenciaram no diagrama de Haigh local dos nós críticos de cada fixador, o que sugere o uso de resultados extraídos de ensaios de fadiga como variáveis de entrada para simulações em juntas de bielas, incluindo assim as influências benéficas do processo de manufatura.
Connecting rods screws maintain the connection between cap and shank supporting the tensile, compressive and transversal loads applied on the big end. In this case, the design of bolted joints become complex since the screw’s position and bearing geometry lead to eccentric forces acting on the joint split line. Due to that and the reduced number of publications on the subject, this dissertation aims to develop a "hybrid approach" for the analysis of bolted joints in angled connecting rods, using results from a simplified finite element model as input for the VDI 2230 part 1 guideline. In addition to that, this study evaluates the influence of unilateral opening phenomenon on fasteners fatigue life, analyzing the results in order to develop a criterion for fatigue analysis of connecting rod bolts. Despite the restrictions, the “hybrid approach” proved to be attractive due to the low computational cost and accuracy, especially for the calculation of minimal residual tensile force to prevent opening, being suitable for multiparametric optimization during project early phases. The opening phenomenon showed no significant changes in fastener’s additional forces, fact related to the position of joint opening points. Nevertheless, the simulations showed that the loading conditions did not influence on the local Haigh diagram of critical nodes, which suggests the use of fasters fatigue tests as input variables for fatigue simulations, thus including the beneficial influences of the manufacturing process.
Havelka, Arnošt. "Analýza architektury a nadstavbových možností frameworku JUnit." Master's thesis, Vysoká škola ekonomická v Praze, 2017. http://www.nusl.cz/ntk/nusl-358879.
Full textLlanos, Román Gabriela, and Gutiérrez Priscila Valladares. "Junta de vecinos infantil: Una experiencia de participación." Tesis, Universidad de Chile, 2007. http://www.repositorio.uchile.cl/handle/2250/106547.
Full textCARNEIRO, Ruth Pereira. "Colagem de junta de madeira com adesivo epóxi." Universidade Federal do Pará, 2010. http://repositorio.ufpa.br/jspui/handle/2011/5086.
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Este trabalho tem como objetivo confeccionar, testar e comparar juntas coladas de topo, biselada e encaixada de espécies de madeira de diferentes densidades. A colagem da madeira possibilita o reaproveitamento de aparas e sobras de madeiras que normalmente são descartadas, podendo minimizar o corte de muitas árvores,seja da natureza ou de plantio planejado. A metodologia de fabricação das juntas foi estabelecida com base em indicações descritas em normas brasileiras. Foi realizada observação macroscópica da madeira, para confirmação de suas espécies. Depois de estabelecida à dimensão das juntas foram confeccionados corpos de prova, utilizando o adesivo Compound Adesivo de base epóxi e as madeiras Angelimpedra, Jatobá e Tauari, adquiridas em depósito de madeira na cidade de Ananindeua-Pa. Quanto à caracterização do adesivo, foi verificado através do ensaio de tração, que tem boa resistência mecânica. Após a colagem das juntas foi realizado ensaio de tração a fim de determinar a resistência das juntas coladas O desempenho dessas juntas foi avaliado em função da relação entre os valores de resistência à tração da madeira sólida e os valores de resistência à tração com madeira colada e modo de ruptura. De acordo com os resultados observou-se que as juntas coladas biseladas apresentaram excelente resistência à tração, bem próxima da resistência da madeira sólida; notou-se também a boa aceitação de colagem da madeira Jatobá. Com relação à qualidade da adesão, as juntas coladas de topo e encaixada apresentaram ruptura adesiva. Os resultados experimentais obtidos indicam uma boa concordância entre os modelos teóricos para avaliar a resistência à tração e a qualificação das juntas coladas.
This work has as objective of making, to test and to compare the glued joints of butt, scarf and finger with three species of wood of different densities. The collage of the wood makes possible the use of pieces and surpluses of wood that are usually discarded, could minimize the cut of a lot of trees, be of the nature or of planned planting. The methodology of production of the joint, it was established with base in indications described in Brazilian norms. Macroscopic observation of the wood it was accomplished, for confirmation of your species. After established the dimension of the joints they were made bodies of proof, using the adhesive Compound Adhesive of epoxy base and wood Angelim-pedra, Jatobá and Tauari, acquired in wood deposit in the city of Ananindeua-Pa. With relationship the characterization of the adhesive, it was verified through the traction tests that has good mechanical resistance. After collages of the joints it was accomplished traction tests to determining the resistance of the glued joints. The glued joints performance it was evaluated in function of the relationship among the values of resistance to traction of the solid wood and the values of resistance to traction with glued wood and rupture way. In agreement with the results it was observed that the glued joints scarf they presented excellent resistance to traction, very close of the resistance of the solid wood; it was also noticed the good acceptance of collage of the wood Jatobá. With relationship the quality of the adhesion, the glued joints of butt and finger, therefore they presented adhesive rupture. The experimental results obtained indicate a good agreement among the theoretical models to evaluate the resistance to the traction and the qualification of the glued joints.
Mitė, Mantas. "Automatinis testų generavimas, paremtas OCL apribojimais." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110901_163402-61358.
Full textThe development of modern software is a difficult process, there is a high possibility to leave uncorrected mistakes in the software, it would be more precisely to say that it is impossible to make software without bugs. Software testing is maybe the biggest part of development process. The unit testing is very powerful testing. It prevents from defects 20% and more [1]. The quality increase came at a cost of approximately 30% more development time. The main goal is create generator for unit testing. Automated test generator can reduce development time. Unit test generation is based on the OCL (Object Constraint Language) and software static model. OCL eliminate a test oracle problem. Software static model can be UML a class diagrams, but it very complicated approach. We use a reflection technology, because it is more precise and better today. Also OCL constrains are inserted in code.
Siddiqui, Asher. "Capturing JUnit Behavior into Static Programs : Static Testing Framework." Thesis, Linnaeus University, School of Computer Science, Physics and Mathematics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-5510.
Full textIn this research paper, it evaluates the benefits achievable from static testing framework by analyzing and transforming the JUnit3.8 source code and static execution of transformed code. Static structure enables us to analyze the code statically during creation and execution of test cases. The concept of research is by now well established in static analysis and testing development. The research approach is also increasingly affecting the static testing process and such research oriented work has proved particularly valuable for those of us who want to understand the reflective behavior of JUnit3.8 Framework.
JUnit3.8 Framework uses Java Reflection API to invoke core functionality (test cases creation and execution) dynamically. However, Java Reflection API allows developers to access and modify structure and behavior of a program. Reflection provides flexible solution for creating test cases and controlling the execution of test cases. Java reflection helps to encapsulate test cases in a single object representing the test suite. It also helps to associate each test method with a test object. Where reflection is a powerful tool to perform potential operations, on the other hand, it limits static analysis. Static analysis tools often cannot work effectively with reflection.
In order to avoid the reflection, Static Testing Framework provides a static platform to analyze the JUnit3.8 source code and transform it into non-reflective version that emulates the dynamic behavior of JUnit3.8. The transformed source code has possible leverage to replace reflection with static code and does same things in an execution environment of Static Testing Framework that reflection does in JUnit3.8. More besides, the transformed code also enables execution environment of Static Testing Framework to run test methods statically. In order to measure the degree of efficiency, the implemented tool is evaluated. The evaluation of Static Testing Framework draws results for different Java projects and these statistical data is compared with JUnit3.8 results to measure the effectiveness of Static Testing Framework. As a result of evaluation, STF can be used for static creation and execution of test cases up to JUnit3.8 where test cases are not creating within a test class and where real definition of constructors is not required. These problems can be dealt as future work by introducing a middle layer to execute test fixtures for each test method and by generating test classes as per real definition of constructors.
Valiente, Wittwer José Manuel. "Análisis Organizacional de la Junta Nacional de Jardines Infantiles." Tesis, Universidad de Chile, 2011. http://www.repositorio.uchile.cl/handle/2250/104091.
Full textSarmento, Diogo Morais. "Estratégias de comunicação na Junta de Freguesia de Esgueira." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/12514.
Full textO presente Relatório apresenta em detalhe as diversas atividades e competência por mim desenvolvidas e adquiridas na Junta de Freguesia de Esgueira, ao longo do Estágio Curricular que realizei no âmbito do Mestrado em Línguas e Relações Empresariais.
This paper aims to describe all the activities carried out at the Junta de Freguesia de Esgueira during the master’s training. It intends to describe the learning and competences achieved through the performance of several tasks.
Rojas, Dunlop Ignacio José. "¿Vecinos, ciudadanos o consumidores? Junta de vecinos del gran Santiago." Tesis, Universidad de Chile, 2014. http://repositorio.uchile.cl/handle/2250/135106.
Full textLa presente memoria de título consiste en el informe de resultados de una investigación etnográfica acerca de las características y alcances de la participación social que se da a partir de la membresía en organizaciones comunitarias territoriales: las juntas de vecinos. Su objetivo general fue caracterizar y analizar la participación de los individuos asociados en las juntas de vecinos estudiadas, de modo de establecer tipificaciones de ellas. Para dar cuenta de estos modos de participación se seleccionó cuatro juntas de vecinos como representantes cualitativas de este tipo de organizaciones comunitarias, de cuatro distintas comunas del Gran Santiago. En ellas se realizaron actividades de observación y entrevistas tanto a dirigentes como a socios. Se sostiene que para darle cumplimiento a sus objetivos estas organizaciones realizan distintos modos de participación ciudadana y comunitaria. En el primer caso se da mayormente una participación instrumental. En el segundo caso se da principalmente una participación esporádica y pasiva, salvo contadas ocasiones en que se está ante una participación comunitaria auto-gestionaria. Aun así, no se cree que exista modo unívoco de caracterizar la participación en juntas de vecinos, ya que esta adquiere diversas formas y alcances según diversos factores, tales como las actividades que realicen, las voluntades, capacidades, etc., de sus dirigentes, de las autoridades comunales, de sus socios, etc. Lo cierto es que dadas las condiciones estructurales actuales existen pocas posibilidades de que sea una participación empoderada y convocante
Costa, Luís Eduardo Vergueiro Loures da. "Análise experimental de uma junta cilíndrica em carbono / epóxi-alumínio." Instituto Tecnológico de Aeronáutica, 1990. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=1866.
Full textSchwartzmann, Larco Víctor Carlos. "La junta de Acreedores en el régimen de reestructuración empresarial." IUS ET VERITAS, 2016. http://repositorio.pucp.edu.pe/index/handle/123456789/122929.
Full textFerreira, Mariana Afonso Monteiro Horta. "Desenvolvimento e implementação de um SGQ numa junta de freguesia." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13683.
Full textO presente relatório descreve os primeiros passos para a implementação de um Sistema de Gestão da Qualidade (SGQ) na Junta de Freguesia de São Salvador tendo como referência a norma ISO 9001:2008. O relatório encontra-se dividido em três partes. A primeira parte consiste numa revisão de literatura sobre a temática da qualidade na administração pública, explicando-se a evolução do conceito da qualidade e como o mesmo se pode aplicar ao setor público. Na segunda parte analisa-se a norma ISO 9001:2008 como referencial para a implementação de um SGQ. Por último, na terceira parte é apresentada a vertente prática do relatório, descrevendo-se e discutindo-se os primeiros passos desenvolvidos para a implementação de um SGQ na Junta de Freguesia, com o objetivo de alcançar a sua certificação.
This report describes the first steps towards implementing a Quality Management System (QMS) in the Junta de Freguesia de São Salvador with reference to ISO 9001:2008. This report is divided into three parts. The first part consists of a literature review on the topic of quality in public administration, explaining the evolution of the concept of quality and how it can be applied to the public sector. In the second part we analyze the ISO 9001:2008 standard as a reference for the implementation of a QMS. Finally, in the third part is presented the practical part of the report, describing and discussing the first steps developed for the implementation of a QMS on the parish, with the goal of achieving their certification.
Timmermann, Freddy. "La declaración de principios de la Junta Militar: 1973-1980." Tesis, Universidad de Chile, 2009. http://repositorio.uchile.cl/handle/2250/108573.
Full textNuestra tesis doctoral analizará historiográficamente el desarrollo de los dispositivos de poder discursivos de la “Declaración de Principios” de la Junta Militar, en interrelación con los principales documentos oficiales del gobierno, en función de los diversos contextos de poder, para determinar en el período 1973-1980 sus variaciones y/o permanencias y, con ello, el desarrollo de las principales doctrinas que rigieron el régimen cívico-militar.
Walsh, Vincent. "Writing Into Silence| Junot Diaz, Human Rights, and the Imperial Curse." Thesis, Lehigh University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3638706.
Full textJunot Diaz employs a variety of postmodernist literary strategies in The Brief Wondrous Life of Oscar Wao, such as conflating (and confusing) the role (and identity) of author and narrator, creating a parallel fictional (and semi-fictional) subtext in the form of numerous, often detailed footnotes, and incorporating a hybrid mixture of discourses throughout a self-referential, apparently self-undermining narrative. Yet by means of his persistent satirical tone, pervasive irony, occasional explicit commentary, and thematic inferences, Diaz simultaneously challenges the core tenets of postmodernist-poststructuralist theory. Diaz's creative concerns interrogate the notion of constructed histories, reestablish distinctions within binaries, and defy the poststructuralist prohibition against grand narratives, while contesting the postmodernist tendency toward moral and cultural relativism. Diaz appears to be consciously inviting a poststructuralist reading, even as he simultaneously undermines any possibility for such a theoretical analysis ever succeeding in fully coming to terms with his work. In effect, Diaz redirects the lens of the postmodernist-poststructuralist perspective back on itself, questioning its basic assumptions. Diaz creates a unique, innovative literary language in The Brief Wondrous Life of Oscar Wao, borrowing tropes from Dominican folklore and popular superstition, mixing in idioms and memes from sci-fi, horror, fantasy, Japanese animes and North American movies, television serials, comic books, hip-hop, and urban diction, in order to tell a story that reawakens repressed memories of historical trauma, and enhances awareness of egregious contemporary injustice. Diaz focuses on the devastating trajectory of the imperialist enterprise in the Western hemisphere since 1492, highlighting the rapacious ideology that ruthlessly engenders this ongoing project of exploitation, domination, and oppression. In setting private aggrandizement above collective wellbeing, the imperial mentality causes incalculable, completely unnecessary suffering, beginning with genocide against the native population, and extending into the extreme social disparities of the neoliberal present; the predatory practices of this avaricious agenda have become so destructive that they now threaten the very survival of the human species. Ruthless greed is the curse that afflicts us; the only possible counter spell that can save us will be a courageous return to instinctive solidarity, with timely recourse to the healing power of human love.
Pyne, Peter P. "Ecuador's Junta Militar, 1963-1966 : a case study of military reformism." Thesis, University of Ulster, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242173.
Full textReis, Vitor Luiz. "Modelagem do mecanismo biela-manivela com folga na junta pino-pistão." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263031.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
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Resumo: Este trabalho apresenta o desenvolvimento de um modelo dinâmico para o mecanismo biela-manivela com folga na junta de revolução pino-pistão. As equações do movimento para este sistema são obtidas através do método de Lagrange e os efeitos relacionados ao contato, atrito e lubrificação que atuam nos elementos com folga são alvo de estudo. O modelo da força de contato utilizado baseia-se na formulação de Hertz, considerando a inclusão do efeito dissipativo associado ao impacto entre o pino e o pistão. A força de atrito adotada baseia-se no atrito de Coulomb, porém adaptada à abordagem da dinâmica multicorpos. Tais modelos são validados com os resultados encontrados na literatura recente. A pesquisa apresenta contribuição na avaliação do efeito introduzido pela lubrificação hidrodinâmica na junta com folga. Dois modelos de lubrificação hidrodinâmica são avaliados: o primeiro apresenta uma solução direta e de baixo custo computacional; o segundo modelo obtém uma solução numérica que leva em consideração o efeito da aceleração imposta ao fluido lubrificante pelo movimento do mecanismo. A resposta dinâmica é obtida sob a variação paramétrica do tamanho da folga e a velocidade de rotação da manivela. Ao final, agrega-se ao sistema um modelo simplificado de geração da curva de pressão para um motor de combustão interna típico. Observou-se que a inclusão do modelo de lubrificação proposto não garante a sustentação do pino-pistão em regime de lubrificação hidrodinâmica durante as simulações efetuadas. Desta maneira, faz-se necessário o desenvolvimento de um modelo de lubrificação hidrodinâmica e elastohidrodinâmica capaz de determinar o comportamento no contato pino-pistão de maneira mais realista
Abstract: This work presents the development of a dynamic model for the slider-crank mechanism with clearance on the piston-pin revolute joint. The equations of motion for this system are obtained by Lagrange's method and the effects related to contact, friction and lubrication at the elements that operate in the clearance are the targets of study. The contact force model used in this work is based on Hertz formulation, considering the inclusion of the dissipative effect associated with the impact between the pin and the piston. The frictional force adopted is based on the Coulomb friction but adapted to the multibody dynamics approach. Such models are validated with the results found in recent literature. The research presents contribution in evaluating the effect introduced by hydrodynamic lubrication in the revolute joint clearance. Two models of hydrodynamic lubrication are investigated: the first model presents a direct solution of low computational cost, the second model results in a numerical solution that consider the effect of the acceleration of the lubricant fluid imposed on the movement of the mechanism. The dynamic response is studied for different sets of parameters of clearance and rotational speed of the crank. Moreover, a simplified model of the generation of the pressure curve for a typical internal combustion engine was included in the system. It was observed that the present lubrication model does not guarantee the support of the pin-piston system for hydrodynamic lubrication in the present simulations. Therefore, it is necessary to develop a more realistic model of hydrodynamic lubrication and elastohydrodynamic lubrication that is capable of reproducing the behavior of the piston-pin contact
Mestrado
Mecanica dos Sólidos e Projeto Mecanico
Mestre em Engenharia Mecânica
Ramos, Leandro Brunholi. "Resistência à corrosão e morfologia de junta soldada de inconel 625." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/178367.
Full textNickel superalloys show a good combination of corrosion, oxidation and creep resistance as well as mechanical and fatigue strength. These alloys can operate at temperatures close to their melting temperature. The Inconel 625 has desired characteristics for application in environments that require high corrosion resistance, such as in oil and gas exploitation. Some studies show the possibility of obtaining a coating of Inconel 625 onto carbon steel by the cladding process and by the thermal spray process. The molybdenum content in Inconel 625 ensures excellent resistance to pitting and crevice, while the niobium content gives high weldability to these alloys. The welding process is practically present in all industrial plants, so an Inconel-Inconel joint is unavoidable. However, the welding can lead to changes in the properties of these superalloys. Therefore, the present work aims to study the structural morphology, hardness and corrosion resistance of a welded joint of Inconel 625 obtained by the electric arc fusion welding process with ENICrMo-3 covered electrode. The morphology was evaluated by optical microscopy, scanning electron microscopy and dispersive energy spectroscopy. Hardness was studied by Vickers microhardness profile along the welded joint. In order to evaluate the corrosion resistance of the welded joint, the Potentiodynamic polarization, potentiodynamic cyclic sweep reactivation (ASTM G108-94), cyclic potentiodynamic polarization and immersion test (ASTM G48-03) were performed Also susceptibility to pitting corrosion was assessed by ASTM G61-86 at room temperature and at 90 ° C. Potentiodynamic polarization curves were performed in three different solutions to evaluate the corrosion resistance: 3.5% NaCl, 3.5% NaCl + 0.01 mol / L Na2S2O3 and 3.5% NaCl + 1M H2SO4 The results show that the weld metal has a dendritic microstructure with precipitates of Nb and Mo in the interdendritic regions. The corrosion performance in environments close to the environments of possible applications was satisfactory considering the resistance of these alloys, but the specific welded joint was more susceptibility to corrosion by pits and localized corrosion. The passive film formed in the base metal was better formed than the passive film formed in the welded metal.
Ferreira, Jeferson. "Fatores atuantes no aperto de fixadores roscados de aço com tratamentos superficiais que influem no surgimento do fenômeno stick-slip/." reponame:Biblioteca Digital de Teses e Dissertações da FEI, 2014. http://sofia.fei.edu.br:8080/pergamumweb/vinculos/00000b/00000b14.pdf.
Full textPodlech, Raby Francisco Javier. "Determinación del potencial hidráulico del río Blanco en el tramo junta río Blanco Estero Caracoles junta río Blanco río Negro, para la localización de pequeñas centrales hidroeléctricas (PCH)." Tesis, Universidad de Chile, 2011. http://repositorio.uchile.cl/handle/2250/100303.
Full textAndré, Sylvain. "La Junta de Philippe II et le gouvernement de la Monarchie hispanique." Thesis, Aix-Marseille, 2016. http://www.theses.fr/2016AIXM3070.
Full textThis thesis intends to trace the history of the Junta of Philip II. Still little known by historians the Junta brought change into the way of governing and of understanding politics in Spain at the transition from the XVIth to the XVIIth century. Being inserted between the several stages of consultation and the royal decision, and by placing the action of its members at the heart of the daily management of cases, its influence deeply modified the way in which the traditional conciliar structure tried to respond to the uncertain stream of politics.The daily confrontation of the members of the Junta with the most diverse cases also gives the historian an overview of the government of the Monarchy. The multiple negotiation processes, the management of wide projects and the several reactions to contingencies reveal a political action more dependent on tensions and balances of power between the actors than on a firm will of the monarch. The Junta thus constitutes a valuable observatory of the construction of political choice at the end of the reign of Philip II. Aiming at emancipating itself from both the studies on governing institutions and the prosopographical approach, this work explores new paths of interpretation focused on the practices of government. Document production, office work organisation, creation of new tools of consultation: the Junta allows to understand better what the mechanisms of the polysynody were and how they evolved because of it
Fuentealba, Hernández Alvaro Luciano. "La judicatura laboral en el gobierno de la junta militar (1973-1974)." Tesis, Universidad de Chile, 2005. http://www.repositorio.uchile.cl/handle/2250/106774.
Full textEn efecto, la pregunta base de esta investigación consistió en determinar si en ese proceso de transformación institucional se produjo o no una intervención del nuevo gobierno en el Poder Judicial, y cuáles fueron las consecuencias de tal intervención, tanto al interior de dicho Poder, cuanto en el movimiento sindical y las relaciones laborales.
Bustamante, Gonzales Juan Carlos. "Participación de la Junta General de Accionistas en la enajenación de activos." Master's thesis, Pontificia Universidad Católica del Perú, 2014. http://tesis.pucp.edu.pe/repositorio/handle/123456789/5559.
Full textTesis
Narciso, Luis Miguel Repolho Vieira. "Tratamento e divulgação do fundo da junta de turismo de Monte Real." Master's thesis, Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa, 2012. http://hdl.handle.net/10362/10160.
Full textO presente relatório é o produto final de estágio desenvolvido no âmbito do Mestrado em Ciências da Informação e Documentação – variante de arquivo, realizado no Arquivo Distrital de Leiria. De acordo com os interesses do Arquivo Histórico Municipal de Leiria em descrever a documentação na sua posse, foi elaborado um plano de trabalho sobre a informação produzida pela Junta de Turismo de Monte Real, com a colaboração do Arquivo Distrital de Leiria, tendo como objetivo o apoio direto no tratamento da documentação resultante da atividade da Junta de Turismo de Monte Real, nomeadamente a organização, descrição e digitalização. Também foi objeto de reflexão as formas de divulgação e valorização deste património arquivístico, com o título: “Tratamento e Divulgação do Fundo da Junta de Turismo de Monte Real”.. Este relatório está constituído por duas grandes partes, sendo uma delas o tratamento da informação, com base na organização e descrição do Fundo. Inicia com a definição do plano de trabalho, seguindo uma caracterização da instituição produtora e terminado com as atividades operacionais de recolha de dados, organização e descrição. A segunda grande parte visa refletir sobre importância da divulgação e valorização deste património arquivístico, no contexto local. A aplicação técnica dos conhecimentos exigiu uma maior reflexão sobre a utilidade no tratamento da informação deste fundo e também a reflexão da importância em tornar este património acessível e disponível ao interesse do cidadão, bem como a investigações científicas. No final são apresentadas as conclusões retiradas à medida que as atividades decorriam, bem como a sugestão no sentido de estender estes objetivos a outros Fundos do Arquivo Histórico Municipal de Leiria.
Kitt, John J. "A concise analysis of Argentina's post-junta reform of its major security services." Thesis, Monterey, Calif. : Naval Postgraduate School, 2006. http://bosun.nps.edu/uhtbin/hyperion.exe/06Dec%5FKitt.pdf.
Full textThesis Advisor(s): Harold Trinkunas, Daniel Moran. "December 2006." Includes bibliographical references (p. 63-65). Also available in print.
Judat, Bernd [Verfasser]. "Über die Fällung von Bariumsulfat - Vermischungseinfluss und Partikelbildung : Vermischungseinfluss und Partikelbildung / Bernd Judat." Aachen : Shaker, 2003. http://d-nb.info/1170541380/34.
Full textLeGris, Hannah Fraser. "HYBRIDITY, TRAUMA, AND QUEER IDENTITY: READING MASCULINITY ACROSS THE TEXTS OF JUNOT DÍAZ." UKnowledge, 2014. http://uknowledge.uky.edu/english_etds/9.
Full textUpp, Daniel G. "Risky invasions decisions made by the Argentine junta regarding disputed islands, 1978--1982." Thesis, Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/5536.
Full textIn 1978, Argentina and Chile were poised at the brink of war over disputed possession of the Beagle Channel islands located near the southern tip of South America. Despite provocative military maneuvering and inflammatory rhetoric from both sides, Argentina's ruling military junta pulled back just short of attacking the territory occupied by Chile, and eventually both sides reached a peaceful settlement. Only four years later, Argentina launched a surprise invasion of the British-held Falkland Islands in the South Atlantic. Why did Argentina choose to go to war with Britain in 1982 but not with Chile in 1978? What factors led to a grab for the Falklands instead of the Beagle Channel islands? Prospect theory, borrowed from cognitive psychology, may hold the answer. This theory proposes that decisionmakers tend to be more risk-averse when they are facing a potential gain and more willing to take risks when they are confronting a potential loss. Therefore, the junta refrained from invading the Beagle Channel islands because they were more secure in their political position and therefore facing a potential gain, but chose to invade the Falklands because they were insecure in their position and facing the loss of political power.
Santos, Ivete Sobral dos. "A Junta Nacional de Emigração e a Política de Emigração no Estado Novo." Doctoral thesis, Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa, 2014. http://hdl.handle.net/10362/13089.
Full textEste trabalho tem como objetivo analisar a política emigratória portuguesa sob o prisma do órgão de coordenação económica - a Junta Nacional de Emigração (JNE) - criado a 28 de outubro de 1947 num contexto internacional favorável à gestão da questão migratória assumida pelas instituições do Estado. Partindo do final do século XIX, quando as saídas do território se tornaram uma questão política, identifica-se o processo evolutivo que leva à sua criação e que define a natureza policial e fiscalizadora da sua intervenção na emigração. Pondera-se também o legado monárquico e republicano, tanto ao nível das medidas jurídicas como ao nível das práticas administrativas de maneira a determinar as continuidades e as particularidades trazidas pelo regime ditatorial no que respeita à sua posição face à emigração durante os anos 30. Criada a JNE num momento-chave de afirmação e de maturação da intervenção do Estado ditatorial na vida económica e social nacional, mas também de instabilidade nacional no imediato pós-guerra, analisam-se os fatores políticos e socioeconómicos, os objetivos e as indecisões governamentais que envolveram a sua criação, assim como a sua estrutura institucional. Neste sentido, identifica-se o processo que garante à JNE o monopólio na organização do processo emigratório, que inclui uma reformulação do papel dos intermediários da emigração, sendo de destacar o afastamento das agências de passagens e passaportes do negócio da emigração. Com o intuito de compreender os vários interesses económicos e políticos nacionais e estrangeiros em jogo (lóbi marítimo, colonial, agrícola, industrial, a colónia portuguesa no Brasil), procura-se apontar as lógicas inerentes à definição do condicionamento emigratório e aos mecanismos administrativos que conjugam interesses nacionais e políticas imigratórias, e a função e ação da JNE na identificação de práticas ilegais. Sob este prisma, procurou-se perceber como o serviço nacional de emigração encara as oportunidades de assinatura de um acordo de emigração, o qual se apresentava como garante de uma proteção otimizada do emigrante. Dá-se também especial atenção aos meios de gestão no transporte de emigrantes que a JNE adotou, assim como ao lugar e às preocupações das companhias nacionais de navegação ligadas a este negócio a partir da concorrência internacional marítima e aérea nos anos 50 e 60. No contexto das saídas para os países europeus nos anos 60, procura-se identificar a posição adotada pela JNE. Propõe-se observar o fluxo conturbado da emigração portuguesa para França no quadro de outras correntes migratórias europeias, em particular para a República Federal da Alemanha, apreender os processos de seleção e de recrutamento da mão-de-obra de modo a perceber a natureza das relações estabelecidas entre as várias instituições ligadas a estas funções, e analisar os debates provocados pela suspensão temporária da emigração em abril de 1967. Finalmente, evidencia-se o processo de reformulação da política emigratória com Marcello Caetano no poder assim como as mudanças administrativas e institucionais que levam à substituição da JNE pelo Secretariado Nacional de Emigração em 1970.
Faraldo, Cabana Patricia. "El consentimiento de la junta General de socios y administración desleal de sociedades." IUS ET VERITAS, 2017. http://repositorio.pucp.edu.pe/index/handle/123456789/123620.
Full textSalgado, Zamorano Sergio Rodrigo. "Estudio de Losa sin Junta de Expansión Acceso Sur. Tramo Soterrado TS-8." Tesis, Universidad de Chile, 2010. http://repositorio.uchile.cl/handle/2250/103718.
Full textFernández, Dávila López Guillermo Francisco Javier. "La naturaleza jurídica de la junta de propietarios, premisas normativas y tratamiento registral." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2018. http://hdl.handle.net/20.500.12404/13873.
Full textTrabajo académico
Pôncio, Pedro Miguel Rocha da Costa. "Edifício Paços da Junta Geral, Angra do Heroísmo: vulnerabilidade sísmica e reforço estrutural." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17376.
Full textA presente dissertação contribui para o estudo do comportamento sísmico de um edifício antigo, em construção tradicional, localizado na Ilha Terceira, Açores, de elevado interesse patrimonial. Começou-se por fazer uma referência à sismicidade histórica no Arquipélago dos Açores, focando nas consequências dos eventos mais recentes e intensos, nomeadamente os sismos de 1980 (Terceira) e 1998 (Faial e Pico). Realizou-se um trabalho preliminar de caracterização construtiva do edifício objeto de estudo, com identificação das principais dimensões geométricas, assim como das propriedades dos materiais utilizados. A avaliação do seu desempenho sísmico teve em conta a regulamentação mais atual, no que respeita à definição da ação sísmica e tipo de análise estrutural. No presente trabalho adotou-se uma análise estática não linear, recorrendo à ferramenta computacional 3Muri® [2016], que modela os edifícios de alvenaria como uma malha de macroelementos, assumindo mecanismos de dano pré-definidos. O edifício foi estudado no seu estado mais original e após ser reforçado, na sequência do sismo de 1980. Foram estudadas diferentes soluções de reforço: (i) recurso a um lintel de coroamento na cobertura; (ii) uso de tirantes; (iii) reforço através de alvenaria pré-esforçada. Em todos os casos foi realizada uma avaliação do dano e do deslocamento-alvo face à ação sísmica considerada. O presente trabalho permitiu alargar o conhecimento acerca da vulnerabilidade sísmica de edifícios em construção tradicional, conhecer algumas das soluções de reforço utilizadas após os eventos sísmicos mais recentes no Arquipélago dos Açores e obter dados importantes ao planeamento de novas obras de reforço e reabilitação neste tipo de construções.
This dissertation contributes for the seismic behavior evaluation of an ancient stone masonry building, with high patrimonial value, located in Terceira Island, Azores. It starts by making reference to the historical seismicity in the Archipelago, showing the main consequences of the most recent and intense events, namely the earthquakes of 1980 in Terceira Island and 1998 in Faial e Pico Islands. In order to identify the geometric dimensions of the building and the applied materials, as well as its properties, a preliminary constructive characterization study was conducted. The seismic structural analysis was performed according to the recent European Standards, where is defined the seismic action and the methods of analysis. It was adopted a nonlinear static analysis, using the 3Muri® [2016] software, which models masonry buildings as a mesh of macroelements with associated failure mechanisms. The building was analyzed in its most original state and after being reinforced, due to the 1980 seismic event. The studied reinforcement solutions were: (i) concrete strapping beam; (ii) tie rods; (iii) prestressed masonry. In all cases was performed a damage and target displacement evaluation for the considered seismic action. This work allowed to enhance knowledge about seismic vulnerability in this kind of masonry buildings, know more about the applied reinforcement solutions after the recent seismic events in the Azores Islands and giving important data for retrofitting design in the future.
Santos, Winderson E. dos. "Sistema para identificação da curvatura na junta prismática de um robô via quaternions." Florianópolis, SC, 2003. http://repositorio.ufsc.br/xmlui/handle/123456789/86275.
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Nesta tese é desenvolvida uma solução para identificar a curvatura de um trilho-guia pelo qual se desloca um robô manipulador. É analisada a influência que a curvatura deste trilho exerce sobre as trajetórias executadas pelo robô. São mostrados, por meio do cálculo infinitesimal, raciocínios que levam à síntese de um sistema otimizado de medição da curvatura em trilhos. A seguir, são exploradas as alternativas tecnológicas para possíveis sistemas de medição aplicáveis ao trilho de um robô específico. Tal robô, denominado Roboturb, é destinado à tarefas de soldagem em pás de turbinas hidráulicas de grande porte erodidas pelo efeito da cavitação. São discutidos, com base em análise estatística, os resultados obtidos por meio de ensaios implementados através do uso de giroscópios. Mostra-se também procedimentos matemáticos que através do emprego de quaternions duais, validam os dados fornecidos pelo sistema de medição proposto, buscando sua futura integração aos algoritmos de cinemática do Roboturb.
Lopes, Quintino Manuel Junqueira. "A junta de educação nacional (1929/36): traços de europeização na investigação científica em Portugal." Doctoral thesis, Universidade de Évora, 2017. http://hdl.handle.net/10174/21298.
Full textLebrun, Myriam. "La duchesse d'Abrantès : une femme, une romancière." Paris 4, 1993. http://www.theses.fr/1993PA040002.
Full textAn historical and literary study of the duchess of Abrantès's novels encircles as many contemporary, stylistic and ideological trends as the originality of the author herself. The works of the duchess of Abrantes were greatly influenced by the historical, fantastic, romantic and melodramatic undercurrents of the time, and indeed the duchess drew heavily upon contemporary, political, social and literary events. Her works truly reflect the age in which she lived. In the novels, there is a strong autobiographical element by which she attempted to paint a very different portrait of herself. Driven by educational motives, the duchess was able to give her vision of feminism by illustrating in her novels examples of the female condition that existed in the nineteenth century. Her four panegyric historical portrait lead her readers to become aware of female prowess in areas normally reserved for men. In twelve other novels she wrote intimately of education, marriage, the respective status of man and wife and adultery in the aristocracy. She used these novels to denounce the authority of men, the inferior position of women and their vulnerability in the face of seducers. She condemned the then status of marriage in which the wife was destined to be the powerless underdog whose only value was to bear children and then educate them. The views espoused by the duchess of Abrantès did in fact evolve from one of intransigence to one of conciliation. Despite her bitter indictment at the outset she concluded that the problem of marriage could be solved by a. .
Silva, José Geraldo Araújo. "Avaliação comportamental de juntas soldadas de um aço estrutural do tipo SAC 50 sob fadiga." reponame:Repositório Institucional da UFOP, 2001. http://www.repositorio.ufop.br/handle/123456789/6244.
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Este trabalho apresenta o estudo do comportamento de juntas soldadas de um aço estrutural, do tipo SAC 50, sob fadiga. O material foi soldado através do emprego do processo ao arco elétrico com eletrodo revestido. Além dos ensaios mecânicos tradicionais, aplicou-se metodologias da Mecânica de Fratura, através de ensaios de tenacidade à fratura (COD e Integral J), e ensaios de propagação de trincas por fadiga. Avaliou-se as características comportamentais das três regiões do material: zona fundida, zona termicamente afetada e metal base. Verificou-se, em termos de tenacidade, que as três regiões do material, pelo efeito da soldagem, apresentaram comportamento semelhante. Correlacionou-se os valores obtidos nos ensaios de tenacidade com ensaios de impacto Charpy. A zona fundida apresentou valor de COD, δm, maior que a zona termicamente afetada e o metal base, o que significa maior resistência à propagação de trincas. O efeito do fator R não influenciou significativamente o posicionamento das curvas de propagação de trinca por fadiga na região II. No entanto, para R = 0,7, o valor limiar (threshold), ΔKth, sofreu uma alteração significativa, diminuindo para o caso do metal base. Pôde-se verificar, também, que para o ensaio de propagação de trinca por fadiga, o valor limiar, para o metal base foi inferior às outras regiões do CP, caracterizando um pior desempenho. A partir do ensaio de Integral J pôde-se estimar um valor de JQ para o metal base. E ainda, fez-se análises microfractográficas dos CPs ensaiados. Verificou-se o aspecto dúctil das fraturas do material, através de “dimples”. No entanto, para ensaios de impacto Charpy, em ‘baixas” temperaturas, o material apresentou o aspecto frágil das fraturas através da presença de facetas de clivagem. ______________________________________________________________________________________________
ABSTRACT : This work studied the behavior of welded joints of structural steel type “SAC 50” under fatigue. The material was welded using the process of electric arc with coated electrodes. Besides using the traditional mechanical tests, methods of fractures mechanics were applied through tests of fracture resistance (COD and J integral) and of the fatigue crack propagation. The behavioral features of three areas of interest (cast zone, heat affected zone and base metal) were determined. In terms of strength, the conclusions were that the three areas presented similar behavior considering the welding effect. The values obtained from resistance tests were later related to those from Charpy impact tests. The cast zone presented a higher COD value than the base metal i.e. higher fracture toughness. The effect of the R factor did not present a strong influence in the position of the fatigue crack propagation curves caused by fatigue. However, for R = 0.7, the threshold value (ΔKth), was slightly altered, being reduced in the case of the base metal. For the fatigue crack propagation test, the threshold value for the base metal was lower than that in the another areas of the specimens, indicating a worse performance. Considering the J integral test, it is possible to estimate a JQ value for the base metal. Also, microfractography analyses of specimen were made. The ductile aspect of the material fractures was revealed by the existence of dimples, although, for the Charpy impact test performed under low temperature, the brittle aspect was revealed by.
Loutas, George. "The impact of the Greek junta of 1967-1974 on the Greek Australian community /." Title page, contents and introduction only, 1993. http://web4.library.adelaide.edu.au/theses/09AR/09arl893.pdf.
Full textMarquez, Guerrero Carolina. "Regional development strategies of a new regional government : the Junta de Andalucia, 1984-90." Thesis, London School of Economics and Political Science (University of London), 1994. http://etheses.lse.ac.uk/2440/.
Full textGatti, Agatha Francesconi. "O trâmite da fé: a atuação da Junta das Missões de Pernambuco, 1681-1759." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/8/8138/tde-07052010-110914/.
Full textThis master thesis aims to comprehend the action of the Junta das Missões de Pernambuco, institution that was founded in 1681 and continued to work during the first half of 18th century, ending its activities in 1759. The Junta das Missões de Pernambuco was created in the course of the consolidation of the cattle economy and of the increase of the number of the religious orders involved in the missionary work. The need to acquire new territories, to settle the people in the area and, therefore, the inevitable contact with unknown indian people who, in general, represented the main obstacles to the Portuguese willings, estimulated the development of new strategies of control and conquest by the Crown based on local aspects and contexts. We intend to study the institution in order to identify its competences, its area of influence and the mecanisms of its work, observing the making of its resolutions and the ways the directions were made, considering that, due to the diversity of its composition, the Junta das Missões de Pernambuco became a privileged locus to comprehend the different interests in dispute. Considering the jurisdiction of the Junta on the capitanias de fora of northern backlands of the State of Brazil, we intend to investigate its action in the configuration of policies for the indians, knowing that the institution dedicated its efforts to the management of the missionary project, as well as to the viabilization of the metropolitan interests in the area. In other words, we intend to observate not only its missionary dimension, but also its political dimension, keeping in mind that it was an institution that mantained, directly or undirectly, the stability of the Portuguese domain in Pernambuco and in its annexed captaincies.
Rangel, Sergio de Camargo. "Análise por elementos finitos da junta de vedação e dinâmica de um compressor hermético." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/18/18149/tde-13082017-230137/.
Full textThis thesis has as objective to model a subset of parts of an idealized hermetic compressor for refrigeration using a program of finite elements intended to study the contact pressure on the valve plate gasket with and without pressure from the refrigerant gas. In this research a dynamic modelling of an academic compressor pump is also made with the aim of studying the vibration generated during its functioning. In the study of the sealing gasket, a geometric model of the cylinder head and gasket assembly is made by using a CAD program. From the geometric of the subset a physical model is built on the ANSYS®, which takes into account the different properties of the cylinder head and gasket assembly materials, including the non-linearity of the gasket material. Simulations are made by applying different normal force values on the cylinder head screws. In the compressor vibration study, a CAD pump model is made, thus obtaining its weight and inertia properties. The stiffness matrix of the pump suspension system is calculated and a modal analysis of the pump is made. The results from the contact pressure analyses were shown through \"normal closure\" and \"normal pressure\" charts of the gasket. They show in clear form the low contact pressure regions applied by the parts that are or should be compressing the sealing gasket, which would the regions of failures. In the dynamic analysis of the compressor pump, the total stiffness matrix of the system is calculated with the suspension springs, taking into account the compressive, flexural and shearing rigidities of the springs. With the solution of the dynamic model created, the following are calculated: the dynamic matrix, the normalized modal matrix, the characteristics frequency matrix, the X → displacement from the pump, as well as the kinetic and potential energy of the pump due to shaking forces. The finite elements model of the valve plate gasket has coherent results and the dynamic model of the pump provides various results for the analysis of the compressor vibration.
SEYNAEVE, Carla Vanessa Moreira da Silva. "Trabalho, gestão e adoecimento: um estudo na Junta Comercial do Estado do Pará - JUCEPA." Universidade Federal do Pará, 2015. http://repositorio.ufpa.br/jspui/handle/2011/7473.
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Este estudo teve como objeto a gestão do trabalho e o afastamento por adoecimento dos servidores da JUCEPA. Nesse sentido, foi realizada uma pesquisa de campo que subsidiou possibilitou a obtenção de dados para analisar a forma de gestão do trabalho adotada por esta instituição e os seus impactos no adoecimento que causam afastamento dos servidores ao trabalho, tendo em vista contribuir para a saúde dos seus respectivos servidores. A realização deste estudo teve como base teórica - metodológica a teoria marxista e o método materialismo histórico e dialético, considerando que estes instrumentos propiciam desvendar as múltiplas determinações do objeto estudo. Para tanto, optou-se pelo tipo de pesquisa qualitativa, a partir de um estudo de caso, objetivando compreender a realidade social dos sujeitos da pesquisa, na tentativa de analisar as múltiplas determinações: políticas, econômicas e sociais. A mencionada pesquisa contou com uma amostra de 10 servidores do universo de 83 servidores que foram afastados do trabalho por adoecimento, cujo critério utilizado para a definição desta amostra foi: ter sido afastado do trabalho por motivo de doença no período de 2009 a 2013. Assim, foram entrevistados 17 sujeitos, sendo 15 servidores que ocupam os diversos cargos das diretorias que compõem a instituição, a saber: os cargos de nível médio, de nível superior e de gestores. Dos 15 servidores entrevistados 10 se afastaram do trabalho por motivo de doença no período referido, os demais compõem o grupo de gestores (sendo 04 gestores) e 01 profissional de saúde (psicologia); além de 01 representante da DSO/SEAD e 01 representante do Sindicato. As conclusões deste estudo permitem afirmar que existe uma relação entre a forma de gestão instituída na JUCEPA e o adoecimento que conduz aos afastamentos dos servidores dessa instituição, o que repercutiu gravemente nos diversos aspectos da vida dos pesquisados, provocando processos traumáticos que se estendem desde o agravo de doenças, tais como: doenças psíquicas, depressão, doenças como hipertensão arterial; aos conflitos familiares e sociais oriundos da insegurança financeira que assola o cotidiano desses servidores no momento do adoecimento.
This study work management and object removal for illness of the JUCEPA servers. In this sense, a field research that supported it possible to obtain data was performed to analyze the form of labor management adopted by this institution and its impacts on illnesses that cause removal of servers to work, in order to contribute to the health of their servers. This study had as theoretical - methodological basis Marxist theory and historical materialism and dialectical method, considering that these instruments provide unravel the multiple determinations of the study object. Therefore, we opted for the type of qualitative research from a case study, aiming to understand the social reality of the research subjects in an attempt to analyze the multiple determinations: political, economic and social. The mentioned survey had a sample of 10 servers of the universe of 83 servers that were away from work for illness, whose criteria used for the definition of this sample was: having been away from work due to illness in the period 2009 to 2013. Thus They were interviewed 17 subjects, 15 servers occupying the various positions of the boards that make up the institution, namely: the mid-level positions, and top-level managers. Of the 15 respondents 10 servers have been away from work due to illness in the period, the others make up the group of managers (with 04 managers) and 01 health professionals (psychology); plus 01 representative of DSO / SEAD and 01 representative of the Union. The conclusions of this study allow us to state that there is a relationship between the form of management established in Jucepa and illness leading to departures from servers that institution, which seriously impacted on various aspects of life of those surveyed, causing traumatic processes that extend from the aggravation of diseases such as mental diseases, depression, diseases such as hypertension; the family and social conflicts arising from the financial insecurity that plagues the daily life of these servers at the time of illness.
Carrasco, Huamaní Luis Alfredo. "La adecuación del Reglamento Interno de Junta de Propietarios a la Ley N° 27157." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2021. http://hdl.handle.net/20.500.12404/20056.
Full textThis research work is based on the Registry Court Resolution No. 2401-2020-SUNARP-TR-L, which contains issues of civil law as well as registry law. The central legal issue analyzed in Resolution No. 2401-2020-SUNARP-TR-L is the quorum and agreement required to modify the participation percentage of the owners of exclusive sections on areas and common goods. In that sense, the Registry Court discuss the application of the process of adaptation and modification of the Internal Regulations of the Board of Owners, according to the rules established in Law No. 27157. The objective of this research is analyze the applicable law regarding the Internal Regulations of the Board of Owners of the exclusive and common property regime, taking into consideration that the Internal Regulations sets forth the rights and obligations of the owners, especially the percentage participation in common areas, among other issues of the owners meeting. Law No. 27157 has been taken into account, its regulations and different resolutions of the Registry Court related to the adaptation of the Internal Regulations of the Board of Owners, which is a document of great importance for the existence of the regime of exclusive property and regulated common property by Law No. 27157. Considering the entry into force of Law N° 27157, specific modifications in the Internal Regulations are required, which is subject to analysis in this research paper.
Auler, Soto Guilhermo. "El presidente de la Junta General de Accionistas en la Ley General de Sociedades." IUS ET VERITAS, 2015. http://repositorio.pucp.edu.pe/index/handle/123456789/122717.
Full textCanorio, Calderón Briana Luz, Fernández Sonia Florinda Campos, Soto Orializ Carla Espinoza, and Cáceres Jorge Alejandro Segovia. "Beneficios de la Junta de Resolución de Disputas en los contratos de obras públicas." Master's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2021. http://hdl.handle.net/10757/656505.
Full textThe purpose of this research work is to analyze how the figure of the Dispute Board, used internationally as an alternative mechanism for solving private disputes, has served as the basis for the incorporation of the Dispute Resolution Board in public procurement regulations in Perú. Despite the fact that the figure is incorporated into Peruvian legislation, the parties involved in the contract are not implementing this mechanism in the execution of contracts, due to ignorance of the benefits and the false perception regarding the high costs they would have to assume. It should be noted that the cost of its implementation is diluted in obtaining benefits, such as avoiding excessive delays in the agreed deadlines, which in the long run materialize in higher costs and a late delivery of the work, to the detriment of the population. In this context, with the aim of highlighting the benefits of the implementation of this mechanism in the execution of public works, it has been considered appropriate to analyze the historical background, characteristics, benefits of the Dispute Board and its regulation in the institutions for the resolution of disputes. most representative controversies at the international level, as well as the regulation of the Dispute Resolution Board in our country, the opinions and contributions of various national and international experts on the matter, to finally issue a series of conclusions and recommendations that we consider important.
Tesis
Souza, Charles Cristian de. "Contribuições para a soldagem de titânio a laser na geometria de junta em aresta." Florianópolis, SC, 2002. http://repositorio.ufsc.br/xmlui/handle/123456789/83452.
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Reduzir peso com aumento constante da resistência dos componentes é o lema da indústria automotiva. Com objetivo de reduzir o consumo de combustível e aumentar a relação potência-peso, materiais de baixa densidade devem ser estudados e suas propriedades avaliadas. Devido à boa relação resistência-densidade alumínio, magnésio, titânio e algumas ligas de aço inoxidável tornamse materiais interessantes para aplicações em estruturas de baixo peso. A possibilidade de juntar ou soldar um material é uma das propriedades mais importantes quando este material deve ser usado em uma grande estrutura ou unido a outros componentes. Devido à boa produtividade e baixas distorções nas peças, o processo de soldagem a laser vem se difundindo nos últimos anos e tem sido empregado com sucesso na indústria automotiva. Aliando a busca de novas aplicações de materiais de baixo peso, especificamente do titânio com a utilização do processo de soldagem a laser, este trabalho tem como objetivo avaliar a soldabilidade e propriedades mecânicas de juntas em aresta de titânio comercialmente puro (Ti ASTM grau 1 e 2) através do processo de soldagem a laser (Nd:YAG). Foram variados os comprimentos de flange (2 a 30mm) da geometria e efetuada a soldagem. Os resultados mostram que titânio comercialmente puro pode ser soldado por laser desde que uma atmosfera controlada (900ppm de oxigênio) seja utilizada. Titânio grau 1 apresenta resultados proporcionais (de 50 a 60% da resistência do material base) aos encontrados para a mesma geometria em aços inoxidáveis austeníticos (AISI 304 e Nirosta® H400). Titânio grau 2 apresenta resultados não recomendados (aproximadamente 10% da resistência do material base) para aplicações onde há necessidade de alta resistência da união soldada. Para esses casos são recomendados outros tipos de geometrias de junta.
Parent, Diane. "Traduire la "dominicanidad" de Junot Diaz dans "The Sun, the Moon, the Stars" et "Wildwood"." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/23991.
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