Distributed Programming
Mostrando 25-36 de 108 artigos, teses e dissertações.
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25. AO-OIL: um middleware orientado a aspectos baseado em uma arquitetura de referência
Middleware platforms have been widely used as an underlying infrastructure to the development of distributed applications. They provide distribution and heterogeneity transparency and a set of services that ease the construction of distributed applications. Nowadays, the middlewares accommodate an increasing variety of requirements to satisfy distinct applic
Publicado em: 2009
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26. A QoS-Based approach for dynamic web service composition.
Web services have become a de facto standard for integration of systems in distributed environments by providing means for exchanging data in a standardized way over the Internet. In fact, this allows computer-computer interaction regardless the programming languages, platform and operating systems used. However, the way services are defined is not enough fo
Publicado em: 2009
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27. UM ESTUDO SOBRE CONTRATOS EM SISTEMAS DE COMPONENTES DE SOFTWARE / A STUDY ABOUT CONTRACTS IN SOFTWARE COMPONENT SYSTEMS
Contract-based programming is one of the techniques used to improve the quality of software by enhancing the formalism of interface specifications. In the context of distributed software components, the use of contracts presents new challenges that make it di*erent from its traditional use. This work intends to evaluate the use of contracts in the developmen
Publicado em: 2008
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28. VirD-GM: Uma Contribuição Para o Modelo de Distribuição e Paralelismo do Projeto D-GM / VIRD-GM: A CONTRIBUTION TO THE MODEL OF DISTRIBUTION AND PARALLELISM OF DE PROJECT D-GM
Este trabalho descreve as principais contribuic oes da VirD-GM (Virtual Distributed Geometric Machine Model) para o modelo de distribuic ao e paralelismo do Projeto D-GM (Distributed Geometric Machine Project). Para disponibilizar as abstrac oes do modelo GM (Geometric Machine) em uma plataforma com suporte `a execuc ao distribu ıda e/ou concorrente, co
Publicado em: 2008
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29. AN INTERCEPTOR BASED ON AOP TO TREAT TRANSVERSAL INTERESTS IN SERVICES WEB / UM INTERCEPTADOR BASEADO EM AOP PARA TRATAR INTERESSES TRANSVERSAIS EM SERVIÇOS WEB
This research currently presents the description of a project in development in the laboratory of intelligent systems (LSI), of the Federal University of the Maranhão (UFMA). The current Middlewares ESB such as the BEA Web Logic, BizTalk, Mule ESB and similars, does not possess a semantics for the treatment of the crosscutting concerns neither before, durin
Publicado em: 2008
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30. Modelo de servidor web com quatro módulos de atendimento de requisições (SWMAR) / Web server model with four request attending modules (SWMAR)
This work presents the implementation and validation of a web server model that divides the web server functions into four modules and each one of these is responsible for an execution step, in which a request goes through during processing. These modules are: request serving (module 1); file transferring to the main memory (module 2); dynamic request proces
Publicado em: 2008
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31. A new genetic algorithm for portfolio optimization with cardinality constraints / Um novo algoritmo genetico para a otimização de carteiras de investimento com restrições de cardinalidade
In this work we consider the problem of determining of the efficient frontier of a portfolio using the mean-variance model subject to a cardinality constrain and to lower bounds on the amount invested in the selected assets. As this nonlinear integer programming problem is hard to solve exactly, we use a genetic algorithm, following the lines described by Ch
Publicado em: 2008
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32. Product mix decision: comparing theory of constraints, activity based costing, general model and discretionary cost considered discretionary cost. / Decisão de mix de produtos: comparando a teoria das restrições, o custeio baseado em atividades e o modelo geral com a utilização de custos discricionários.
The optimal product mix selection must consider internal and external factors of a manufacturing company. The external ones are mainly products prices, industry competition, substitute and complementary products, distribution channels, industrial location, and government taxes among others. The internal factors are related mainly to the use of the industrial
Publicado em: 2008
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33. AnÃlise de escoamentos compressÃveis nÃo-viscosos em trÃs dimensÃes utilizando o mÃtodo dos elementos finitos por aresta
This work has as its main goal the development of a computational tool for numerical simulation of compressible fluid flow problems for three dimensions, using as starting point the computational tool developed by LYRA (1994) that dealt with fluid flow problems in two dimensional domain. For the development of this tool, a space discretization was adopted us
Publicado em: 2008
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34. Modularizing communication middleware concerns using aspects
Software engineers often rely on communication middleware platforms to design and implement distributed systems. However, middleware functionality is usually invasive, pervasive and tangled with business-specific concerns. In this paper, we describe an aspect-oriented distributed programming system that encapsulates middleware services provided by Java RMI a
Journal of the Brazilian Computer Society. Publicado em: 2007-12
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35. Hermes: a framework for P2P application programming / Hermes: um arcabouço para a programação de aplicações P2P
Hermes is a framework for P2P application programming. Using it, one can create several kinds of distributed applications without worrying about the underlying network. Hermes is not a P2P overlay network implementation, but a shell envolving existing implementations. The application developer is isolated from the implementation of the overlay network in use
Publicado em: 2007
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36. Adaptatividade hp em paralelo / Hp adaptive technique in parallel
This work presents a study of hp adaptive methods applied to finite element approximations. Two topics are emphasized: analysis of the quality of the approximation and methodology of refinement of the approximation space. The main objective of the work is to conceive a framework for developing hp-adaptive algorithms within the PZ environment. The framework i
Publicado em: 2007