Distributed Operating Systems
Mostrando 13-24 de 37 artigos, teses e dissertações.
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13. 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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14. INTEGRAÇÃO DE PILHAS DE CÉLULAS A COMBUSTÍVEL COM OUTRAS FONTES ALTERNATIVAS DE ENERGIA / INTEGRATION OF FUEL CELLS STACKS WITH OTHER ALTERNATIVE SOURCES OF ENERGY
This dissertation presents a project of a integrated system with distinct energy generating modules using a wind generator, photovoltaic generator, fuel cells stack (FCs) and an accumulator of energy formed by a bank of batteries. This system was implemented in the Center of Studies in Energy and Environment-CEEMA-UFSM. The alternative sources of energy were
Publicado em: 2009
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15. Model checking underwater vehicles control architectures: a formal specification based approach. / Checagem de arquiteturas de controle de veículos submarinos: uma abordagem baseada em especificações formais.
The development of control architectures for Underwater Vehicles is a complex task. These control architectures might be chracterised by the following attributes: real-time, multitasking, concurrency, and distributed over communication networks. In this scenario, we have multiple processes running in parallel, possibly distributed, and engaging in communicat
Publicado em: 2009
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16. MODEL-DRIVEN RESOURCE MANAGEMENT: ADAPTABILITY AND INTEROPERABILITY ON END-TO-END QOS SUPPORT / GERENCIAMENTO DE RECURSOS DIRIGIDO POR MODELOS: ADAPTABILIDADE E INTEROPERABILIDADE NO SUPORTE A QOS FIM-A-FIM
The evolution of codification techniques for continuous media is making distributed multimedia applications even more popular. This kind of application has performance requirements that must be met in an end-to-end fashion, which can be achieved only if quality-of-service (QoS) provisioning mechanisms are applied on each participant subsystem. These mechanis
Publicado em: 2008
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17. Improving traceability in agent oriented development
Requirements engineering has argued that in order to successfully develop complex software systems, it is necessary to support the modeling process with traceability mechanisms and tools. Requirement Traceability refers to the ability to ensure continued alignment between stakeholdersâ requirements and various outputs of the systems development process. A r
Publicado em: 2008
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18. CONTRIBUTIONS TO STUDY OF WIND FARM CONNECTION TO THE UTILITY / CONTRIBUIÇÕES AO ESTUDO DE CONEXÃO DE GERAÇÃO EÓLICA À REDE ELÉTRICA
Distribution systems have not been designed to receive distributed generation (DG) units. The electric energy injection in these systems is safe and reliable if the characteristics regarding of DG interconnection in distribution power systems are considered: (i) Protection; (ii) Stability; (iii) Electric energy market; (iv) Quality of energy. In this work, a
Publicado em: 2007
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19. Um middleware para execução de processos estruturados em grades computacionais / A middleware for execution of structured processes in computer grids
O conceito de grade surgiu com a necessidade crescente de se aproveitar recursos computacionais disponíveis em uma ou mais organizações para resolver problemas que exigem compartilhamento de dados e um grande poder de processamento. Uma grade computacional tem como objetivo principal permitir a execução distribuída e paralela de tarefas em recursos com
Publicado em: 2007
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20. Sins : um editor Xchart na forma de plugin para o ambiente eclipse / Sins : an Xchart editor as a plugin for the eclipse environment
: Sistemas reativos têm grande importância em muitas áreas da engenharia e da computação, mas a qualidade e maturidade das metodologias e ferramentas de apoio ao desenvolvimento deixam a desejar em relação às voltadas a sistemas transformacionais. Uma das metodologias de destaque é a Arquitetura Orientada a Modelos, onde os sistemas reativos são de
Publicado em: 2007
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21. Estudo de escalabilidade de servidores baseados em eventos em sitemas multiprocessados: um estudo de caso completo\" / Scalability study of event-driven servers in multi-processed systems: a complete case study
The explosive growth in the number of Internet users made software architects reevaluate issues related to the scalability of services deployed on a large scale. It is still challenging to design software architectures that do not experience performance degradation when the concurrent access increases. In this work, we investigate the impact of the operating
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/10/2006
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22. Evaluation of memory load indices on distributed computing systems / Avaliação de índices de carga de memória em sistemas computacionais distribuídos
This work presents an analysis of the behavior of load indices related to memory usage and activity. It describes 11 indices which reflect memory load, directly or indirectly. These indices may be easily obtained on the GNU/Linux operating system using the /proc filesystem. A monitoring tool has been developed to make the behavior analysis easier, but it can
Publicado em: 2006
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23. PROJETO E IMPLEMENTAÇÃO DE UM CONTROLE MODULAR HCC PARA INTEGRAÇÃO DE FONTES ALTERNATIVAS DE ENERGIA / DESIGN AND IMPLEMENTATION OF A MODULAR HCC CONTROLLER TO INTEGRATE ALTERNATIVE SOURCES OF ENERGY
The experience of electric energy shortage in 2001 demonstrated that our dependence almost exclusively on hydroelectricity could fetch great problems to Brazil. Thus being, the existence of trustworthy alternatives of energy must exist, at the very least, as a reserve. For this reason, the perspective of decentralizing the energy production as a form of prom
Publicado em: 2006
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24. Distribution manager of the Xchart runtime environment in J2EE / Gerente de distribuição do ambiente Xchart em J2EE : sistemas reativos distribuidos na tecnologia Xchart
The aim of the current project is the development of the Distribution Manager of the Xchart runtime environment. The Xchart environment as defined by the Xchart technology is composed by a set of tools that supports the development of dialogue managers of user interfaces. The specification of these dialogue managers is modular and describes the concurrent ex
Publicado em: 2005