Orientador: Luiz Fernando Bovolato / Resumo: Os ambientes de aprendizagem à distância (EaD) são reconhecidos atualmente como ferramentas úteis na construção do conhecimento, pois favorecem de forma contextualizada a capacidade de cognição por parte do aluno. Contando com a flexibilidade de horário, o aluno pode construir gradativamente seu conhecimento de acordo com seu perfil, articulando os conteúdos na busca de uma aprendizagem significativa, orgânica e sistêmica. Um dos grandes obstáculos enfrentados pelos estudantes e profissionais de Engenharia Elétrica é o elevado grau de abstração com o qual muitas vezes são solicitados a trabalhar. Neste contexto, são particularmente importantes as atividades experimentais no sentido de transpor a barreira que separa o conceito teórico e abstrato da sua aplicação prática. Os laboratórios remotos podem ser uma ferramenta muito útil neste seguimento de EaD, pois além de promover a solidificação dos conceitos teóricos viabilizam também o uso dos recursos experimentais por um maior espaço de tempo e de forma compartilhada. Destacam-se também as potencialidades dos laboratórios remotos nos ambientes de investigação científica na pós-graduação. Nesse caso, é comum se deparar com a necessidade de equipamentos específicos, sofisticados e de alto custo. A racionalização dos recursos financeiros na implantação de laboratórios de apoio à pesquisa pode ser efetivada com o uso coorporativo dos equipamentos, pelos diferentes grupos e/ou instituições de pesquisa. Para tanto, apresenta-se nest... (Resumo completo, clicar acesso eletrônico abaixo) / Doutor

The present article describes a method to quantify the magnitude of the differences between two measures and/or the degree of the effect of a variable about criteria, and it is named likethe effect size measure, d. Use it use in research and applied contexts provides a quitedescriptive complementary information, improving the interpretation of the results obtained bythe traditional methods that emphasize the statistical significance. Severa) forms there are of interpreting the d, and an example taken of an experimental research, is presented to clarify the concepts and necessary calculations. This method is not robust to sorne conditions that they candistort its interpretation, for example, the non normality of the data; alternative methods are mentioned to the statistical d. We ending with sorne conclusions that will notice about the appropriate use of it. / El presente artículo describe un método para cuantificar la magnitud de las diferencias entredos mediciones y/o el grado del efecto de una variable sobre un criterio, y es llamado lamedida de la magnitud del efecto, de su uso en contextos de investigación y aplicados proporciona un información complementaria bastante descriptiva, mejorando la interpretaciónde los resultados obtenidos por los métodos tradicionales que enfatizan la significación estadística. Existen varias formas de interpretar el estadístico d, y se presenta un ejemplo,tomado de una investigación experimental, para aclarar los conceptos y cálculos necesarios.Este método no es robusto a ciertas condiciones que pueden distorsionar su interpretación, por ejemplo, la no normalidad de los datos entre otros; se mencionan métodos alternativos alestadístico d. Finalizamos con unas conclusiones que advierten sobre su apropiado uso.

Este trabalho apresenta uma análise teórico-experimental da ligação pilar-fundação por meio de cálice em estruturas de concreto pré-moldado, com ênfase no colarinho. No programa experimental, foram ensaiados cinco protótipos sob força normal com grande excentricidade, variando-se o tipo e condição de interface: três com interface lisa, onde em dois foi eliminada a adesão para representar a situação mais adequada de projeto; e dois com interface rugosa, com duas configurações diferentes de chaves de cisalhamento. Foram realizadas simulações numéricas pelo método dos elementos finitos nos modelos lisos sem adesão, com as não-linearidades físicas e de contato, e nos cálices rugosos, considerando-se a não-linearidade física e a aderência perfeita das interfaces. Os resultados experimentais indicaram a necessidade de se reavaliar os principais métodos de projeto para essa ligação. Desta forma, foi proposto, para o cálice liso, um modelo de projeto considerando o atrito entre as interfaces e o cálculo das paredes longitudinais como consolos. Já para o cálice com interface rugosa, como foi verificada a proximidade do comportamento dos modelos físicos rugosos com uma ligação monolítica, recomendou-se o dimensionamento de suas armaduras verticais, admitindo a transferência total dos esforços, e das armaduras horizontais superiores também com o funcionamento das paredes longitudinais como consolos. Os modelos numéricos apresentaram uma boa convergência e semelhanças na fissuração e no caminho de tensões em relação aos protótipos físicos, apesar das deformações terem sido menores que as observadas experimentalmente. / This research presents a theoretical-experimental analysis of column-foundation connection through socket of precast concrete structures, with emphasis in pedestal walls. The experimental program included five models submitted to normal load with large eccentricity, changing the type and the condition of interface: three models had smooth interface and two models had rough interface. In two of smooth models, the bond was eliminated to represent the more appropriate situation of design. Two different configurations of shear keys were used in rough models. Numerical simulations, by finite elements method, were developed on the smooth models without bond, using physical and contact non-linear analyses, and on the rough socket connections, using physical non-linear analyses and perfect adherence of interfaces. The experimental results indicated the need to revalue the principal design methods for this connection. In that way, a design model was proposed for the smooth socket connection, considering friction between the interfaces, and the design of longitudinal walls was suggested as corbels. As it was verified the proximity of rough physical models behavior with a monolithic connection, its vertical reinforcings design was recommended, admitting the total transfer of the efforts. Numerical models had a good convergence and likeness with cracking and tensions field of physical prototypes, in spite of deformations have been smaller than experimental results.

Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-05-18T14:05:37Z No. of bitstreams: 1 thalitagoncalvesdarocha.pdf: 1954745 bytes, checksum: 8ef903d55008d251a42b042467106099 (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-05-18T14:10:48Z (GMT) No. of bitstreams: 1 thalitagoncalvesdarocha.pdf: 1954745 bytes, checksum: 8ef903d55008d251a42b042467106099 (MD5) / Made available in DSpace on 2017-05-18T14:10:48Z (GMT). No. of bitstreams: 1 thalitagoncalvesdarocha.pdf: 1954745 bytes, checksum: 8ef903d55008d251a42b042467106099 (MD5) Previous issue date: 2017-02-20 / Esta pesquisa parte de uma conexão entre as perspectivas dos autores Jacques Rancière e JeanLouis Comolli sobre o potencial político contido em práticas artísticas e no cinema para discutir sua expressão no "documentário-dispositivo". Sua abordagem intenciona destacar o lugar da montagem nesta reflexão política. Segundo este propósito, em um primeiro momento, apresenta-se uma análise do pensamento de montagem que percorre e constrói o documentário Rua de Mão Dupla (2002), dividida em três etapas (abordagem, filmagem e edição), lançando sobre esta questões sobre a partilha do logos e as decisões/responsabilidade pelo risco; em um segundo momento, as reflexões levantadas na análise são postas em diálogo na criação de um dispositivo documental, associada a metodologia da Pesquisa experimental em artes. / This research is based on the conection between the perspectives of Jacques Rancière and JeanLouis Comolli on the political potencial inside arts and movies as a way to discuss its expression in the ―documentary-dispositfs‖. It aims to highlight the purpose of editing in the political reflection. According to this objective, first, there is an editing process analysis which goes through and builds the documentary Rua de Mão Dupla (2002), split into three steps (approach, filming and editing), asking questions about knowledge sharing and risk through responsability and decision making; then, there is conversation about the questions that surfaced during the analysis through the creation of documental dispositif, related to the methodology of Experimental research in the media arts.

Orientador: Araí Augusta Bernárdez Pécora / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica / Made available in DSpace on 2018-08-26T18:01:21Z (GMT). No. of bitstreams: 1 Silva_RicardodeOliveira_M.pdf: 15867764 bytes, checksum: 658914fead0bb9e86c21db30210e6cb9 (MD5) Previous issue date: 2015 / Resumo: As políticas de redução de consumo de combustíveis e de preservação ambiental e em contrapartida os recentes aumentos da frota veicular no Brasil, especialmente dos veículos equipados com sistema de ar condicionado, demandam estudos de gerenciamento térmico de motores a combustão interna visando melhorias no projeto do sistema e a otimização do consumo de combustível. Esta dissertação de mestrado apresenta o projeto, a construção e a validação de uma bancada para simulação do sistema de ar condicionado veicular (ACV). Neste sistema, o compressor do ciclo de resfriamento por compressão de vapor é acionado por um motor de combustão interna instalado em um banco dinamométrico. A simulação de diferentes condições operacionais do sistema de ACV ocorre por meio do controle de três parâmetros: (1) controle da rotação do compressor, que é acionado pelo motor de combustão interna no banco dinamométrico; (2) controle da carga térmica, por meio da variação da temperatura, da vazão e da umidade relativa do ar que atravessa o evaporador; (3) controle da pressão de condensação por meio da variação da vazão de ar que atravessa o condensador. As curvas características do motor de combustão interna (torque, potência e consumo de combustível) em função de sua rotação são comparadas em duas situações com : (i)o compressor do ciclo de resfriamento ligado e (ii) compressor desligado. A análise foi realizada em condições operacionais controladas e simuladas na bancada desenvolvida. Os resultados dos testes permitiram avaliar a influência do funcionamento do ciclo de resfriamento sobre as principais características do motor de combustão interna e sobre a eficiência do sistema de condicionamento de ar. Esta avaliação permitiu o levantamento de dados importantes para a determinação da melhor relação entre o consumo de combustível e o conforto térmico dos passageiros do veículo, contribuindo para o desenvolvimento tecnológico na área / Abstract: The politics of fuel consumption reduction and environmental preservation, in contrast with a recent increment of vehicular fleet in Brazil, especially for vehicles equipped with air conditioning system, requiring studies of thermal management of internal combustion engines, aiming improvements in the project of the system and optimizing the fuel consumption. The present Master¿s dissertation shows the project, the construction and the validation of a test bench in order to simulate a vehicular air conditioning system. Focusing on the necessary power consumption to produce cooling in a vehicular air conditioning system (ACV), such power is consumed by a vapor compression cycle which uses a compressor to compress the refrigerant gas; this compressor is assembled on an internal combustion engine installed on a dynamometer test bench. The simulation occurred in controlled conditions of the engine and of the blown air properties on the heat exchangers (the evaporator and the condenser). Three parameters tend to maintain the test stable: (1) the compressor speed which is driven by engine; (2) the temperature, the mass flow rate and the relative humidity of the intake air which flows through the evaporator; (3) the condensing pressure which is controlled by the variation of the mass flow rate which passes through the condenser. Thus the characteristic curves of the internal combustion engine (torque, power and fuel consumption) are obtained in controlled conditions in function of the engine speed with the compressor on and off. The test allow to assess the influence of the compressor used on the vehicular air conditioning system on the main characteristics of the internal combustion engine and the performance of the vehicular air conditioning system, when it is requested for pre-set test conditions. That kind of analysis has shown important itself determining the best relationship between the fuel consumption and thermal comfort in vehicle passengers and contributing for the technological development for this area / Mestrado / Termica e Fluidos / Mestre em Engenharia Mecânica

Experimentelle Untersuchungen an Plattenbalken zeigen, dass Querkraftverstärkungen auch außerhalb der Biegedruckzone verankert werden können. Entscheidend dabei ist, dass alle in der Verbundfuge von Altbeton und Verstärkung auftretenden Beanspruchungen durch die Haftzug- und Scherfestigkeit des Alt- und Feinbetons übertragen werden können. Ein Verbundversagen führt durch das Ablösen der Verstärkungsschicht zu deren Ausfall. Der Beitrag befasst sich mit den Beanspruchungen und Versagensmechanismen des Verankerungsbereiches, die anhand von Versuchsergebnissen dargestellt werden. Als Versagenskriterium für die Verankerung sind zwei flächige Versagensarten – der Altbetonuntergrund und die Ebene der textilen Bewehrung – zu berücksichtigen. Als weiteres Versagenskriterium der Verankerung ist der innere Verbund zwischen den Multifilamentgarnen und der sie umgebenden Feinbetonmatrix zu betrachten. Für die Bemessung des Verankerungsbereiches einer Verstärkung wird der jeweils ungünstigste Wert dieser drei Versagensarten maßgebend.

In First-Person shooter video games, spread is a mechanic that adds a random artificial inaccuracy to the player’s shots. Movement-amplified spread is a particular implementation of spread which amplifies the inaccuracy based on the speed the player is moving at. As a consequence, players that are moving are unable to fire accurate shots, whereas players standing still remain accurate. The purpose of this thesis is to study the effects of movement-amplified spread of different intensities on gameplay dynamics. To this end, we created a First-Person shooter target practice course for testers to complete 15 times. For every third completion we made movement-amplified spread more intense. The results showed that as movement-amplified spread increased, testers were more prone to halt before shooting, firing more shots and engaging with targets at a somewhat shorter distance. / I förstapersonsskjutare, även kallat FPS, är spread en spelmekanik som applicerar enslumpmässig inexakthet till spelarens precision när de skjuter. Movement-amplified spread ären specifik implementering av spread som amplifierar inexaktheten baserat på spelarens rörelse och hastighet. Som en konsekvens av detta så har spelare som rör på sig svårt att samtidigt vara träffsäkra, medan spelare som står still förblir precisa. Syftet med denna uppsats är att studera hur effekterna av en ökande movement-amplified spread påverkar spelkänsla och dynamik i spel. För detta har vi byggt en FPS hinderbana med stationära mål som testare har fått springa igenom 15 gånger. För vart tredje genomförande har vi ökat intensiteten av movement-amplified spread. Resultaten visar att när movement-amplified spread ökade, så var testarna mer benägna att stanna före de avlossade skott, de sköt mer eller så sprang de närmare för att bekämpa måltavlorna på ett kortare avstånd.

<p>Coupled Composite Plate Shear Walls / Concrete Filled (CC-PSW/CFs) are being employed as a seismic lateral force resisting system for the design and construction of mid- to high-rise buildings around the world. The coupled system consists of two or more Composite Plate Shear Walls – Concrete Filled (C-PSW/CFs) connected to each other using composite coupling beams located at the story heights. The CC-PSW/CF system can provide higher overturning moment capacity, lateral stiffness, and ductility than uncoupled walls. Concrete-filled steel box sections are typically used for the composite coupling beams, which are designed to be flexure critical members. When the CC-PSW/CF system is subjected to lateral seismic forces, plastic hinge formation and inelastic deformations (energy dissipation) occur near the ends of most of coupling beams along the structure's height, followed by flexural hinging of the C-PSW/CFs, typically at the base. </p> <p>This work presents the details and design of four composite coupling beam-to-C-PSW/CF connection configurations. Six connection specimens, representing the four connection configurations, with beam clear span-to-section depth, <em>Lb</em>/<em>d</em>, ratios of 3.5 and 5.1, were designed, fabricated, and tested. The experimental program focused on the force-displacement and moment-rotation responses, behavioral observations, limit states, and flexural capacities of the tested specimens. Major limit states and events included yielding of the steel plates comprising the coupling beam, followed by local inelastic buckling, fracture initiation in the base metal (near the weld toes) in the connection region, and fracture propagation through the beam flange and web plates leading to loss of flexural strength and failure. All specimens developed and exceeded the capacity and chord rotation requirements, in accordance with ANSI/AISC 341-22 guidelines.</p> <p>Detailed nonlinear 3D finite element models of the tested specimens were developed and verified using experimental results. The 3D finite element models accurately simulate the stiffness, flexural capacities, and monotonic responses of tested specimens. Nonlinear fiber-based models of the tested coupling beam-to-C-PSW/CF specimens were developed and verified using experimental results. The nonlinear fiber-based models can accurately simulate the stiffness, flexural capacities, and cyclic responses of tested specimens. The benchmarked fiber models were used to estimate the moment-rotation response of full-scale archetype connections. </p>

A handful of studies have shown that National Inter-religious Councils (NIRCs) contribute to electoral violence prevention. However, no quantitative study has evaluated the impact of their interventions and the conditions under which they lower electoral violence. Using data on African national elections from 1992-2019, I examine whether NIRCs' electoral-related peacebuilding interventions lower the severity of electoral violence and if their ability to do so depends on NIRCs' social power. The results in this thesis indicate that the presence of NIRCs' interventions during electoral rounds lowers the likelihood of severe electoral violence. The findings also reveal a significant disordinal interaction between NIRCs' interventions and their power, where the predicted probability of severe electoral violence reduces by 42% when powerful NIRCs implement peacebuilding interventions and, on the other hand, increases by 20% when less powerful NIRCs intervene. While this thesis fails to explain the disordinal interaction effect, it details this study's methodological tools and limitations and contributes an original dataset of NIRCs' interventions and power for future research.

The aim of this investigation was to determine whether there is a significant difference in the academic achievement of sixth grade Science students when teaching styles are matched to their learning styles. The research problem is encompassed in the following question: "Is there a relationship between matching teaching and learning styles and the academic success in Science?" A quantitative approach was undertaken, specifically, the pretest-posttest control group experimental design. The population comprised of sixth grade students selected according to a non-probability sampling method of convenience. The sample comprised of two class units randomly selected. The dependent sample t-test inferential statistic was used to analyze the data collected. The results indicated a statistically significant difference between the pretest and posttest scores of the experimental group. The conclusion reached is that matching teaching styles to learning styles improves the academic success of sixth grade learners in Science. / Educational Studies / M.Ed. (Educational Psychology)