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Search Results: 1 - 10 of 79157 matches for " Porto Arthur José Vieira "
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Metodologia de análise para redes interorganizacionais: competitividade e tecnologia
Barbosa, Fabio Alves;Sacomano, José Benedito;Porto, Arthur José Vieira;
Gest?o & Produ??o , 2007, DOI: 10.1590/S0104-530X2007000200016
Abstract: the business network literature has cited the importance of two interlinked themes: competitiveness and technological management. nowadays, interfirm competitiveness is dependent on investments in technologies made by individual enterprises that are based primarily on the patterns of demand behavior. regarding the internal environment of companies that compose the network, competitiveness patterns (that derive from demand patterns) are used as references to determine the "best practices" and organizational technologies that optimize the competitive performance of companies - and, consequently, the performance of interorganisational network. the proposal of a methodology to increase the network competitiveness by appropriate technological investments - as well as the application of this methodology in an interfirm arrangement belonging to the citrus segment - represent the objectives of this paper.
Aplica??o dos conceitos de modelagem e de redes de Petri na análise do processo produtivo da indústria sucroalcooleira
Yamada, Mamoru Carlos;Porto, Arthur José Vieira;Inamasu, Ricardo Yassushi;
Pesquisa Agropecuária Brasileira , 2002, DOI: 10.1590/S0100-204X2002000600010
Abstract: the modeling, as a tool of analysis of agribusiness processes as well as of productive chains, supplies the demand for appropriated methodological tools. the present work aimed to evaluate the adherence of modeling and petri net concepts applied to the sugarcane agroindustrial complex. a real company was used for the acquisition of the information. models of the chains of activities were validated with the petri net tool, through an analysis method where all possible paths and all states that the modeled system can reach are simulated. the study resulted in 14 groups of production stages, including all unitary operations of the sugar and alcohol productive chains, from the planting of the cane to the storage of the sugar and alcohol.
Evolu??o das técnicas de simula??o
Lob?o, Elídio de Carvalho;Porto, Arthur José Vieira;
Produ??o , 1999, DOI: 10.1590/S0103-65131999000100002
Abstract: this work describes the simulation's systems evaluation in the light of technology development, matemathical simulators and reduced physical scale models such as the general purpose simulation language and customized simulators are discussed. finally, an architeture for the new generation of simulators viabilized by the electronics and informatic state of the art: intelligent and interactive simulators which integrate the artificial intelligence and virtual reality technology is presented.
Aplica o dos conceitos de modelagem e de redes de Petri na análise do processo produtivo da indústria sucroalcooleira
Yamada Mamoru Carlos,Porto Arthur José Vieira,Inamasu Ricardo Yassushi
Pesquisa Agropecuária Brasileira , 2002,
Abstract: A modelagem, como meio de análise de processos do agronegócio, bem como de cadeias produtivas, atende à demanda por métodos apropriados. O presente trabalho objetivou avaliar a aderência dos conceitos de modelagem e de rede de Petri aplicados ao complexo agroindustrial da cana-de-a úcar. Utilizou-se uma empresa real para a aquisi o das informa es. Os modelos das cadeias de atividades foram validados com o uso da rede de Petri, por meio de um método de análise em que s o simulados todos os caminhos possíveis e os estados que o sistema modelado pode atingir. O estudo resultou em 14 conjuntos de etapas de produ o, englobando todas as opera es unitárias das cadeias produtivas do a úcar e do álcool, desde o plantio da cana até o armazenamento do a úcar e do álcool.
Manufatura Virtual: conceitua??o e desafios
Porto, Arthur José Vieira;Souza, Mariella Consoni Florenzano;Ravelli, Carlos Alberto;Batocchio, Antonio;
Gest?o & Produ??o , 2002, DOI: 10.1590/S0104-530X2002000300007
Abstract: virtual manufacturing has been used by some companies to improve their processes, introducing more quickly new products in the market. the strategy is to create an integrated environment, composed by several software tools and systems, aiming at generating a new method to develop products. the purpose of this paper is to present the virtual manufacturing concept and the paradigms involved in its definition. then the paper describes the potential application areas and the resulting benefits. in addition, the technical and social challenges in development of a virtual manufacturing system are discussed at the end of the text.
Critical aspects on the behavior of material from the mechanical tool-workpiece interaction in single point diamond turning
Jasinevicius, Renato Goulart;Duduch, Jaime Gilberto;Porto, Arthur José Vieira;Purquério, Benedito Morais;
Journal of the Brazilian Society of Mechanical Sciences , 1999, DOI: 10.1590/S0100-73861999000300012
Abstract: some material aspects such as grain size, purity and anisotropy exert an important influence on surface quality, especially in single point diamond turning. the aim of this paper is to present and discuss some critical factors that can limit the accuracy of ultraprecision machining of non-ferrous metals and to identify the effects of them on the cutting mechanism with single point diamond tools. this will be carried out through observations of machined surfaces and chips produced using optical and scanning electron microscopy. solutions to reduce the influence of some of these limiting factors related with the mechanism of generation of mirror-like surfaces will be discussed.
Aprendizagem significativa no ensino de engenharia
Carvalho, Anna Cristina Barbosa Dias de;Porto, Arthur José Vieira;Belhot, Renato Vairo;
Produ??o , 2001, DOI: 10.1590/S0103-65132001000100006
Abstract: that work has the objective to show the theories of learning and especially the use of the theory of the significant learning in teaching of engineering. the idea of conceptual map is presented, which will help the teacher to plan his classes and it can also be used by the students in the aid of the knowledge anchorage and the consolidation of their knowledge.
Análise da aloca??o de m?o-de-obra em linhas de multimodelos de produtos com demanda variável através do uso da simula??o: um estudo de caso
Souza, Mariella Consoni Florenzano;Yamada, Mamoru Carlos;Porto, Arthur José Vieira;Gon?alves Filho, Eduardo Vila;
Produ??o , 2003, DOI: 10.1590/S0103-65132003000300006
Abstract: the complexity of planning and scheduling of multi-model assembly lines, joined to the dynamic behavior of these lines and the stochastic nature of the assembly times make a simulation based approach more effective to support the line scheduling. this work uses the simulation to analyze the manpower need and allocation, in different scenarios considering the number of operators, the operator's distribution on the workstations, the use of concurrency relationship of activities and the arrival sequence of engines in the line. this study was accomplished in three engines subassembly lines in a company of the automotive sector, characterized by a variable daily demand with defined delivery date for the finished products.
Manufatura Virtual: conceitua o e desafios
Porto Arthur José Vieira,Souza Mariella Consoni Florenzano,Ravelli Carlos Alberto,Batocchio Antonio
Gest?o & Produ??o , 2002,
Abstract: A Manufatura Virtual é uma nova proposta que está sendo utilizada por algumas empresas para revolucionar seus processos, visando introduzir no mercado produtos superiores, mais rapidamente e a um menor custo. A estratégia é criar um ambiente integrado, composto de diversos sistemas e ferramentas de software, com a finalidade de gerar um novo método de desenvolvimento de produto. Este artigo tem por objetivo apresentar o conceito de Manufatura Virtual, bem como os paradigmas envolvidos em sua defini o, as aplica es potenciais e os benefícios esperados. Apresenta também os sistemas de suporte às atividades de Manufatura Virtual e uma análise dos desafios técnicos e socioculturais para sua implementa o.
Logistics problems in soybeans Brazilian exportation
Heráclito Lopes Jaguaribe Pontes,Breno Barros Telles do Carmo,Arthur José Vieira Porto
Sistemas & Gest?o , 2009,
Abstract: With the globalization process, the world-wide nations are having an increase of the international trade. Brazil has, each time more, used the agribusiness as a strategy of insertion in the world-wide economy. The exportations of Brazilian agricultural productscome playing an important paper in the supplying revenues and increase of the domestic income, but a visible problem of the agribusiness for exportation is related to logistic. In theworld-wide marketplace, Brazil presents comparative advantages in the production of agricultural products in relation to the other world-wide producers, but it loses in logistic costs. The importance of this work is in characterizing the logistic problems of the Brazilian exportation of one of the most important commodities national, the soybeans. The soybeans is the agricultural product that more generates volume of exportation for Brazil, demanding sufficiently of the logistic structure of the country. For accomplishment of this work, it was used an general bibliographical research, where if it carried through a detailed survey of themain problems, causes, costs and solutions for the flowing of the soybeans in Brazilian for exportation. From the development of this work, it was perceived that the challenges of the logistic of the soybeans are many and that the resolution of these problems will increase the Brazilian international competitiveness, increasing the trustworthiness in the delivery times and reducing the costs of the inefficiencies in the exportation process.
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