Computer Systems Engineering
Mostrando 13-24 de 82 artigos, teses e dissertações.
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13. A new architectural approach for interoperability of real-time system components.
Interoperability is a key property of distributed applications, which is hard to achieve due to the large number of interoperating components and semantic heterogeneity. Distributed Real-Time Systems (RTS) have strict requirements of performance. The interoperability of Distributed RTS components challenges the computer engineering community to fulfill these
Publicado em: 2010
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14. Sistemas críticos sob a perspectiva do design de interação e comunicação / Critical systems under the perspective of interaction and communication
Sistemas críticos têm sido definidos como sistemas cujo fracasso provoca conseqüências catastróficas ou inaceitáveis para a vida humana. A literatura tem relatado vários casos reais de falhas relacionadas à interação e comunicação que levaram a perdas de vidas humanas. Na aviação, muitos incidentes têm causas originadas de falha de interação
Publicado em: 2010
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15. Elementos básicos para a construção de modelo de gestão da informação para engenharia de software : estudo de caso para atividade de requisitos no SERPRO
The interdisciplinary characteristics of information science have expanded its influence on other disciplines. One of the main correlated disciplines is computer science, specially with the association of information management models and software engineering. Information systems development has become a critical activity in most organizations, due to its re
Publicado em: 2009
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16. OBSTÁCULOS AO ENSINO DOS MÉTODOS DE AVALIAÇÃO DA ENGENHARIA SEMIÓTICA / OBSTACLES TO THE TEACHING OF THE SEMIOTIC ENGINEERING EVALUATION METHODS
This thesis presents the results of a qualitative research about the difficulties that are present in the teaching and learning process of two Human-Computer Interaction (HCI) evaluation methods. It concerns the Semiotic Inspection Method (SIM) and the Communicability Evaluation Method (CEM) both proposed by Semiotic Engineering to analyze the quality of the
Publicado em: 2009
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17. Assembly and evaluation of a cooling tower for use in teaching undergraduate activities / Montagem e avaliação de uma torre de resfriamento para uso em atividades de ensino de graduação
This work describes proposal for complementing Process Systems Engineering (PSE) undergraduate learning. Traditional teaching of PSE is normally restricted to modeling and computer simulations, with very little contact with actual processes. We felt that applying theoretical concepts to practical problems would be very welcome by the students and improve the
Publicado em: 2009
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18. FAVIHC Framework de Avaliação da Interação Humano-Computador / FAVIHC - Framework de AValiação da Interação Humano Computador
In order to implement a software development process following certain quality constraints, which must be observed by the involved professionals (namely developers, customers, users and designers), it is paramount that those professionals interact. Such an interaction is necessary in order to design, build and evaluate the software. Moreover, the evaluation
Publicado em: 2009
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19. On board sensing system to control variable rate agricultural inputs / Sistemas de sensoriamento embarcado para uso em controle de aplicações de insumos agrícolas à taxa variável
The development of systems able to join different technological tools is very important in order to provide support for Precision Agriculture and it stimulates the creation of interdisciplinary teams to obtain favorable results to increase agricultural productivity. The main goal of this work is to study applications of embedded sensing systems in agricultur
Publicado em: 2009
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20. MONOENERGETIC AND POLYENERGETIC GAMMA RAY COMPUTER TOMOGRAPHY FOR MULTIPHASE SYSTEMS ANALYSIS / Análise de sistemas multifásicos utilizando tomografia computadorizada Gama monoenergética e polienergética
It is important to recognize that at the heart of chemical transformations in all process and energy industries is multiphase reator technology, as over 99% of reator systems require the presence of more than one phase for proper operation. Tomography is a powerful technique capable of determining the effect of operating and design parameters on the phase ho
Publicado em: 2009
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21. Strategies for computational resources trading in desktop grids / Estrategias para comercialização de recursos computacionais em desktop grids
The association of idle machines in desktop grids architectures represents a significant progress in the solution of complex problems in areas as science, engineering, trade and others. The difficulty in the implementation and in the continuity of these architectures is to maintain the levels of availability demanded by their users. In its majority, the user
Publicado em: 2009
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22. Numerical and experimental study of solidification around the cylinder with and without the use of turbulence promoter / Estudo numerico e experimental da solidificação em torno de cilindro com e sem o uso de promotor de turbulencia
The process of solidification of a material of change of phase in a region annular around of a cylinder cooled by fluid passing in its interior is studied numerical and experimentally, objectifying applications in systems of storage of latent heat. The boundary immobilization technique is used for solving for phase-change problem. The coordinate transformati
Publicado em: 2009
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23. Development of extruded profiles from high density polyethylene and wood flour composites / Desenvolvimento de perfis extrudados de compósitos de polietileno de alta densidade com farinha de madeira
Polymer profiles extrusion shows some peculiarity due to the flow behavior of these materials during the processing. On the other hand, the profile die design and tooling has been more a result of professionals expertise than an engineering project in essence. In the present work, it was aimed to combining concepts of computers aided engineering to rheologic
Publicado em: 2009
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24. A contribution for studing of robust control / Uma contribuição ao estudo de controladores robustos
The model based predictive controller (MPC) has been successfully applied in industry, with particular emphasis on the petrochemical industry. The basic feature of MPC algorithms is based on the formulation of an optimization problem, for calculating the sequence of control moves that minimize a performance function in a time horizon with the best informatio
Publicado em: 2009