Network Architecture
Mostrando 13-24 de 305 artigos, teses e dissertações.
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13. Proposal of a new approach for BER evaluation of multirate, multiservice OCDMA systems / Proposta de uma nova abordagem para o cálculo da BER de sistemas OCDMA de múltiplas taxas e multiserviços
The continuous evolution of the optical communication technology in the last few years has allowed the growing users demand for higher bandwidth to be satisfactorily attended. This new demand is mainly attributed to the growing popularity of bandwidth-intensive networking applications, such as Internet protocol television (IPTV), high-definition television (
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/08/2012
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14. O croqui de concepção no processo criativo em arquitetura / The onceptual sketch in creative process in architecture
Until recently much of the understanding of creativity was performed from the spectrum of inspiration. Through this thinking, any architectural project that was worthy of relevance would be seen as the product of "talent" of the architect. However, in the last sixty years, researches investigating the cognitive processes enabled a new understanding of how th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/08/2012
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15. Desenvolvimento de vetores não virais para entrega gênica baseados na cadeia leve de dineína Rp3 = : Development of non viral vectors for gene delivery based on dynein light chain Rp3 / Development of non viral vectors for gene delivery based on dynein light chain Rp3
Gene delivery is a promising technique with great medical potential that consists in the introduction of exogenous nucleic acids, and can be applied for gene therapy as well as DNA vaccination. However, its use is still limited by the lack of an ideal delivery vector, which is both safe and efficient. Although much more effective, viral vectors still raise s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2012
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16. Architecture for generic detection of machine code injection in computer networks
Since the creation of public exploitation frameworks, advanced payloads are used in computer attacks. The attacks generally employ evasion techniques, have anti-forensics capabilities, and use target machines as pivots to reach other machines in the network. The attacks also use polymorphic malicious code that automatically transforms themselves in semantica
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/06/2012
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17. Análise do mecanismo de segurança da arquitetura IMS / Analysis of the security mechanism in the IMS architecture
Considerando-se que para controlar e possibilitar a entrega de diversos conteúdos e serviços a qualquer tipo de acesso fazia-se necessário um núcleo bem definido e estruturado, surgiu o IMS (IP Multimedia Subsystem) com o propósito de prover a integração completa das redes e serviços. O IMS define uma arquitetura completa e framework que habilita a c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/05/2012
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18. Bibliotecas Digitais: modelo metodológico para avaliação de usabilidade
It aims to analyze and develop methodology for evaluation of digital libraries with a focus on usability. This study discusses aspects of the evaluation of digital libraries, considered as information devices that assist in the democratization of information mediated by technologies. Such libraries can be understood as environments for organization, storage,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/05/2012
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19. Curral de reses, Curral de almas: urbanização do sertão nordestino entre os séculos XVII e XIX / Cattle Corral, Soul\ s Corral: Urbanization of the Brazilian Northeasterner Hinterland between the 17th and 19th Centuries
Esta dissertação estuda a urbanização do sertão nordestino entre os séculos XVII e XIX, vinculada ao diálogo que chamamos de curral de reses e curral de almas. Curral de reses tece as questões do fenômeno urbano no interior do Nordeste açucareiro, no que dizia respeito ao papel exercido pela pecuária extensiva no povoamento, na posse da terra e no
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/03/2012
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20. AutonomicSec: Um Mecanismo Autonômico para Segurança de Redes baseado em Decepção / AutonomicSec: A Autonomic Mechanism for Networks Security based on Deception
Security in computer networks is the area responsible for protecting the data passing through it. The research for better security strategies has increased considerably since exists a vast number of attempted attacks. These attacks have caused financial loss and reputation damage to companies, institutions and individuals. There are several obstacles to achi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/03/2012
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21. Uma abordagem complementar à tradução de endereços para conectividade transparente
Traditional NAT is an extremely common technique, employed on routers in order to share on single Internet connection among many computers of a local network. This technique has been responsible for the survival of IPv4 with its limited address space, and is virtually transparent to many of the Internet application: those that uses the classic client-server
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/03/2012
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22. Acionamento de dispositivos robóticos através de interface natural em realidade aumentada / Robotic device actuation through natural interface in augmented reality
Since the beginning of History and particularly of the Industrial Revolution, human beings have sought to replace or supplement their workforce with devices and machines, in order to expand their productive capacity or to solve tasks for which the use of human power is not satisfactory or it is dangerous. This need pushed the development of robotic devices i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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23. Uma arquitetura híbrida aplicada em problemas de aprendizagem por reforço / A hybrid architecture to address reinforcement learning problems
With the evergrowing use of cognitive systems in various applications, it has been created a high expectation and a large demand for machines more and more autonomous, intelligent and creative in real world problem solving. In several cases, the challenges ask for high adaptive and learning capability. This work deals with the concepts of reinforcement learn
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/02/2012
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24. An hybrid architecture for clusters analysis: rough setstheory and self-organizing map artificial neural network
The database of real world contains a huge volume of data and among them there are hidden piles of interesting relations that are actually very hard to find out. The knowledge discovery in databases (KDD) appears as a possible solution to find out such relations aiming at converting information into knowledge. However, not all data presented in the bases are
Pesquisa Operacional. Publicado em: 08/03/2012