994 resultados para Processos Estocásticos


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The research aims to analyze the main changes in the concepts of the processes of production and consumption of news content information. The theoretical framework used will be the new consequent social, economic and technological paradigms of the current scenario of convergence of platforms, content and languages. The research aims to investigate the changes in the macro environment of journalistic production and, therefore, examine whether the local flow of news content meets the requirements of a new public consumption target set by the new Brazilian generations, composed of young people influenced by the cultures of computing, audiovisual communication and also by economic and cultural globalization. As expansion of the analyzes sought to verify the impact of these changes in the current models of traditional media, as well as the interference caused and trends in models of existing production. Also a case study is performed on this production flow in comparison with current market research of Jornal da Cidade (JC) of the city of Bauru (SP), the main media of the Grupo Comunicação. The intent of the approach will be to establish some preambles to assist in bringing the theory with the practical impacts on journalistic production, its agents, institutions and the workplace

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Through observation of production process of a Vale do Paraiba’s automobile industry, one can encounter in need of improvement related to large uncertainties and variations in the production environment, a fact that inspired the search for solutions that can respond quickly to these changes. This way, the paper describes the development of a flexible manufacturing model, which aims to optimize the process in an automotive sub-assembly industry of the Paraíba Valley. The main objective is to propose a method to promote viable alternatives to easing the assembly of parallel sub performed the assembly of cars. For the construction of the model was necessary to explore concepts of flexible manufacturing and making the data presented in literature, which were vital to ensure the development of the method. The concepts discussed are usually presented at an undergraduate degree in Engineering. Data compiled by the model are able to serve as a strategic benchmark for decision making by managers. Featuring alternative response variables and uncertainties of the organizational environment, a fact that facilitates the management of human resources and productive

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Nowadays, bamboo is being studied because of their strength properties according with their specific mass and speed of growth, which makes it an important alternative as a new resource that will help reduce pressure on forests and helpping them favoring the minimization of uncontrolled deforestation in many regions of Brazil. This study aimed, in general, to analyze physical and mechanical properties of the material with the divulgation of its potential for industrial application. To do so, in this research were determined in relation to the physical properties, moisture content, dimensional stability and the apparent densities and the mechanics and basic, just a tension parallel to grain, in order to observe the interference of various kinds of treatments (chemical, thermal and natural) on the strength and modulus of elasticity in this request. The species used was the Guadua angustifolia, a species native of Brazil. All tests were performed at Universidade Estadual Paulista - Campus Experimental Itapeva in the laboratory of Materials Properties. The methodology used for testing of moisture, density and tension parallel to grain were based on NBR 7190/1997 for the wood, and dimensional stability tests were based on much the same as in COPANT 462/1972 (South American) . The preservative treatments conducted followed the recommendation of each manufacturer. The values obtained in tests of physical properties were satisfactory especially with respect to density and dimensional stability analyzed by the coefficient of anisotropy, showed that, compared to wood, excellent quality for the shrinkage test, obtaining a coefficient of 1.2. With respect to parallel tensile tests to fibre results showed, in most cases, that test specimens with the presence of us have lower values of resistance and modulus of elasticity when compared with those without us. In the treatment of thermal-treatment there was an apparent treatment there was an apparent increase in...

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In this work, we have some considerations about the interactive process between teacher and students, and we analyze the subjective aspects of how the teacher reacts from its interpretation of the student's motivation throughout his lecture. We utilized Vigotski's theories, about the importance of dealing with the social cognitive process, which may contribute to an efficient school learning and when the teacher is engaged and motivated is able to motivate and excite all students who are in their classroom. We therefore investigated how it relates to the constructs of Werstch, the arguments of the teacher and students' excitement

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Buscando contribuir e mesmo incentivar novos e mais aprofundados estudos sobre o modo como os dialetos do português são tratados e apresentados à população brasileira, o presente trabalho procura realizar uma breve análise da construção e abordagem do humor nos dicionários de dialetos do português do Brasil, bem como classificar os tipos de dicionários existentes. Busca-se, sobretudo, estudar quais os mecanismos utilizados para provocar o riso, como se reproduz determinado modo de falar e se por traz disto tudo há alguma manifestação velada de preconceito linguístico

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The analysis of the extraction process in oil wells is presented exploring the challenges to the effectiveness of the procedure is shown step by step in the process. There is an analysis of the major tools and equipment needed in the drilling process, promoting the understanding of the challenges in the pre-salt layers, compared to conventional processes. The work is reinforced through studies of the influence of the corrosive compared not corrosive environment in drill strings

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The crescent increasing demand of the electric power in Brazil has stimulated the implantation of Small Central Hydroelectric Power (SCHP) in several regions of the country. However, the silting up of the reservoirs is one of the main problems faced by hydroelectric power plants and SCHP. In this context, this research aimed evaluate the phenomenology and propose the enforcement of appropriate bioengineering techniques to control the intense erosive process of the hydrographical basin of the “Alto Rio Sucuriú,” that cause silting up of the reservoirs of the SCHP Costa Rica, located in the municipal district of Costa Rica (MS). In order to identify the phenomenology of the main falling in of this basin, a diagnosis of the conditions of the physical environment of the region (climate, geology, pedology, hydrology, and use of the ground) was realized. A surveying was also realized to specify the geometric feature of the falling in using the Total Station of the Ruide brand, series RTS 860R and the geodetic GPS of the Ashtech brand and the data obtained was used on the preparation of the Digital Elevation Model (DEM) of the falling in. Based on this diagnosis an official register of the falling in was done with identification of the different types of present erosion. Due to the advanced erosive stage of the falling in researched, the use of bioengineering techniques could be the best solution considering that the traditional engineering techniques make use of heavy material like concrete, iron and large machines that besides causing higher impact to the natural and esthetic aspects of the environment also require a higher investment of capital. This research establish a great cooperation to the knowledge of the erosive process and of the rehabilitation of the degraded areas with application of bioengineering techniques not only hydrographical basin of “Alto Rio Sucuriú” but also to other basins that show similar situation

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Pressure drop and energy efficiency of compressors in chemical plants are the focus of this study. Its objective is an analysis of possible sources of energy loss through the study of pressure loss in pipes, calculation of thermodynamic efficiency of the compressors. Important issues are raised for this analysis such as the types of compressors, the operating range of each compressor, compression types, as well as a study of accessories such as filters and valves. After studying these issues was carried out calculations of pressure drop step-bystep and with a software WIPCD. Followed by the calculation of efficiency of compressors and monthly energy cost of each compressor in operation. Finally, the study shows some suggestions for immediate improvements, changes and suggestions for possible future purchases of compressors

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Since the beginning of the railway industry until today, rail wheels are important components to the good working of a railway. For being a critical security item, design and maintenance are done with extremely care to avoid failures. Despite de fact of railway components be projected to support a big number of cyclic solicitation during its life, some accidents still occur. These accidents, despite the low frequency, always have great consequences, drawing in great financial, material, and people losses. Nowadays, railway component failure is relatively low, because it’s been projected to work below the materials Fatigue Resistance Limit, however, with the growing demand of faster trains and higher load for each axle, the occurrence probability is even bigger. This work includes a comparative study of two fabrication processes (casting and forging) applied in the production of rail wheels where it was measured the mechanical properties of traction and fatigue. The study also verified through microstructural analysis, hardness, traction and fatigue tests, statistical analysis of fatigue test results and fractographic analysis that forging process lead to better correlations between fatigue life and mechanical properties, providing more security in railroads, less wagon retention caused by corrective maintenance and smaller operational cost with its use

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Ao administrar um fármaco, devem ser considerados fatores como a forma farmacêutica apropriada, a via de administração com maior eficiência e o que será mais bem aceita pelo paciente. Formas farmacêuticas sólidas (FFS), tais como comprimidos, representam a principal escolha, pois são fáceis de preparar, armazenar, transportar e são bem aceitas pelos pacientes. Porém, a absorção dos fármacos administrados em comprimidos depende do processo de desintegração, ou seja, um processo tempo-dependente que ocorre sob a ação de um desintegrante que promove a fragmentação da forma farmacêutica em partículas passíveis de serem dissolvidas e absorvidas. Para uma liberação efetiva do ativo, uns dos critérios relacionados à formulação como a escolha dos excipientes e o tipo de revestimento devem ser considerados. O revestimento com polímeros é utilizado para melhorar a estabilidade do fármaco, mascarar sabor ou para promover a liberação em locais específicos de acordo com a variação do pH. A técnica considerada como “padrão ouro” para monitorar FFS no trato gastrintestinal do homem é a cintilografia, entretanto, métodos alternativos com base na detecção de campo magnético merecem destaque. A técnica de Biosusceptometria de Corrente Alternada (BAC) tem evoluído, apresentando como vantagem ser um método não-invasivo e livre de radiação ionizante. A BAC utiliza bobinas de indução para registrar a variação temporal do fluxo magnético a partir da resposta de um material magnético ingerido, aplicando-se um campo magnético alternado no meio biológico. O objetivo deste estudo é empregar a BAC para avaliar in vitro a influência de três diferentes polímeros de revestimento em diversos parâmetros farmacotécnicos e no processo de desintegração de comprimidos

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Jazz brings to the surface discussions about globalization and its unfolding. The development of such music style allows a reflection about the processes that influence 20th century culture, thus enabling a closer look into debates that involve cultural industrialization and standardization in such context. Horkheimer‟s and Adorno‟s work deal with this theme, considering culture as something standardized, a result of the process that fits into the industrial production mold. Morin goes further in this discussion, suggesting the emergence of a mass culture as a third culture. Later, Latin-American authors Ortiz and Canclini bring up new tones and approaches to the globalization through culture theme

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This work proposes a study on the materials selections and processes for the manufacture of aircraft and showing a methodology to reduce the manufacturing cost. The DFMA can be understood as a methodology that aims at reducing manufacturing and assembly costs and coupled with the increase of product quality through design simplifications. The most commonly material used in the manufacture of aircraft is aluminum alloys due to these possess great structural strength, good elasticity, and being stainless having a low specific weight (about 1/3 that of steel), reducing the weight of the aircraft. A case study in which an operation in the process of verifying the quality was generating unnecessary costs time / man for the company was also developed. The problem solution was simple, just removing the attachment process. It was found that the DFMA methodology is extremely important for the simplification of processes and projects, contributing to the reduction of manufacturing costs of aircraft