Communication Architectures
Mostrando 1-12 de 38 artigos, teses e dissertações.
-
1. Assessment Methodology for E-Government Technical Interoperability Maturity Level. / Metodologia para AferiÃÃo do NÃvel de Maturidade Associado à Interoperabilidade TÃcnica nas AÃÃes de Governo EletrÃnico.
The unstructured and unplanned implementation of technological solutions leads to wastage of resources and imposes itself as a barrier to achieving the potential benefits of information technologies and communication. The problem increases when managers who operate these technologies are part of the public administration, as structural issues make this scena
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/11/2012
-
2. Dynamic detection of the communication pattern in shared memory environments for thread mapping / Detecção dinâmica do padrão de comunicação em ambientes de memória compartilhada para o mapeamento de threads
As threads de aplicações paralelas cooperam a fim de cumprir suas tarefas, dessa forma, comunicação é realizada entre elas. A latência de comunicação entre os núcleos em arquiteturas multiprocessadas diferem dependendo da hierarquia de memória e das interconexões. Com o aumento do número de núcleos por chip e número de threads por núcleo, esta
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
-
3. Proposta de um procedimento para a modelagem de sistemas de controle de edifícios inteligentes utilizando a rede de Petri colorida. / A procedure for modelling the control system in intelligent buildings based on colored Petri nets.
Technological advances in recent decades have motivated the development of intelligent buildings, aimed at creating environments more productive for the occupants, economically advantageous for the owners and environmentally correct. New ways of interaction between users and the buildings systems are emerging from these kinds of systems, which are not adequa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/08/2011
-
4. ARQUITETURAS DE CRIPTOGRAFIA DE CHAVE PÚBLICA: ANÁLISE DE DESEMPENHO E ROBUSTEZ / PUBLIC-KEY CRYPTOGRAPHY ARCHITECTURES: PERFORMANCE AND ROBUSTNESS EVALUATION
Given the evolution of the data communication field, and the resulting increase of the information flow in data, networks security became a major concern. Modern cryptographic methods are mathematically reliable. However their implementation in hardware leaks confidential information through side-channels like power consumption and electromagnetic emissions.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/04/2011
-
5. SCAE: uma abordagem baseada em agentes inteligentes para gerenciamento e controle de campos de petróleo / SCAE: an approach based on intelligent agents for management and control of oil fields / SCAE: uma abordagem baseada em agentes inteligentes para gerenciamento e controle de campos de petróleo / SCAE: an approach based on intelligent agents for management and control of oil fields
Several existing systems, whether in nature, whether in companies human exhibit the characteristic of being formed by individuals or subsystems that cooperate to carry out their tasks, and thus achieve a global goal. Examples these systems range from a society of bees to an organization financial, community animal to a manufacturing system, among many others
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2011
-
6. VCom : uma abordagem para modelagem de ambientes colaborativos
First generation of web applications was responsible for the popularization of the network and the emergence of the first groups of Internet users. At that time, the web content was little interactive and web sites were limited in the aspects of configuration options and interface of the system. The Users were mere spectators of the actions that took place i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/01/2011
-
7. Geração automática de código para a execução em um ambiente de computação em DataFlow
The computers architectures are becoming more distributed and hierarchical,that is, there exist lots of computers in a cluster and there are many processors in these computers and these processors have multiple cores. Many models have been proposed to explore the features of the computers architectures. The Data-flow computing models stand out among the prop
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/10/2010
-
8. Integração sistêmica em middleware. / Systemic integration middleware.
This paper studies analytically the various network architectures used in industrial environments and administrative, as well as areas of convergence that led to the emergence of integration platforms that have defined corporate management solutions. Under an evolutionary approach will consider the applicability of the concepts and communication patterns of
Publicado em: 2010
-
9. Uma arquitetura de controle de qualidade de serviço aplicada a redes heterogêneas e serviços convergentes. / An architecture for QoS control applied to heterogeneous networks and convergent services.
One of the targets of the next generation communication systems is to provide access to any service, to any user, anytime, anywhere, regardless the access network technology or type of user device (mobile phone, PDA, personal computer, and so on). This scenario is called convergence of services by heterogeneous networks, and in such scenario quality of servi
Publicado em: 2010
-
10. Arquitetura modular de processador multicore, flexível, segura e tolerante a falhas, para sistemas embarcados ciberfísicos. / Modular multicore processor architecture, flexible, securi and fault tolerant, to embedded cyber-physical systems.
Cyber-physical Systems (CPS) are systems where there is an union between computing and physics. The CPS will be used in several areas, forming a new era of systems or devices and could be anywhere, being used by anyone and anything. Applications for CPS include highly reliable medical systems and devices, traffic control and security, advanced automotive, pr
Publicado em: 2010
-
11. Caracterização espectral e avaliação de desempenho para formatos avançados de modulação digital optica em 40 Gb/s / Spectral characterization and performance evaluation for advanced digital optical modulation formats at 40 Gb/s
This work compares the performance of four feedforward carrier recovery architectures in coherent QPSK and 8-PSK receivers, with polarization multiplexing and differential decoding. We focused on the scenarios showing an SNR imbalance between orthogonal polarizations, as in PDL impaired systems. Using Monte Carlo simulations, we observed that the proposed jo
Publicado em: 2009
-
12. 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