Transport Protocols
Mostrando 13-24 de 37 artigos, teses e dissertações.
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13. Arquitetura e prototipação de uma UNI optica para a rede GIGA / Architecture and prototype of an optical UNI for the GIGA network
The main interests of the GIGA Project are the deployment of Optical Network Technology, Network Services and Applications, Experimental Telecommunication Services and Scientific Applications. In the context of this Project, our research group has been working on the design of an IP/WDMControl Plane to integrate the IP/MPLS Client Network with the Optical Tr
Publicado em: 2006
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14. REDES VIRTUAIS PRIVADAS / PRIVATE VIRTUAL NETWORK.
Along with the computers networks emerges the possibility of managing remotely the intelligent organizations although the safe change of information has become a problem to the institutions which transport structured data through nets of computers. One of the largest challenges is the search for safe and economically viable solutions. Protocols of safety, cr
Publicado em: 2005
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15. Um estudo do desempenho dos protocolos iSCSI e Fibre Channel
Nowadays, most of the corporations face a growing demand for efficient methods to manipulate information. Applications are becoming more sophisticated with richer content and consequent there is the need for more storage and faster access to information. In the past, storage systems and computer networks were two independent entities, but due to the huge dem
Publicado em: 2004
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16. Formal Modelling and Analysis of Some Functionalities of Transport Protocol through the Petri Nets. / Modelagem e Análise Formal de Algumas Funcionalidades de um Protocolo de Transporte através de Redes de Petri / Formal Modelling and Analysis of Some Functionalities of Transport Protocol through the Petri Nets. / Modelagem e Análise Formal de Algumas Funcionalidades de um Protocolo de Transporte através de Redes de Petri
Esta dissertação aplica um método formal para o estudo, modelagem e análise de algumas fucionalidades do protocolo de transporte denominado SCTP. Este protocolo vem sendo desenvolvido há mais de cinco anos pelo IETF e alcançou um nível de eficiência em funcionalidade tão grande que está sendo considerado o provável candidato para substituir o TCP.
Publicado em: 2003
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17. Sistematização crítica das tendências de padronização de arquiteturas e protocolos em redes ópticas / Critic sistematization of standardization tendencies of the architectures and protocols in optical networks
The main objective of this work is to analyze the evolution trends for the architecture of the optical networks, discuss the state of the art protocols required for its development and evaluate the various efforts being carried out by different institutions in order to achieve standardization. In this context, optical networks are those in which the dominant
Publicado em: 2003
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18. End-to-end inverse multiplexing for mobile hosts
This paper presents a framework for the creation of transport protocols for mobile hosts that use multiple link layers simultaneously for the same connection. This abstraction provides an end-to-end transport layer channel between two applications that do not have to be aware of host mobility. The channel is composed of multiple network layer sub-channels. A
Journal of the Brazilian Computer Society. Publicado em: 2001
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19. Adaptações induzidas pelo treinamento fisico no metabolismo oxidativo e sistema de defesa antioxidante em musculo e sangue de ratos e sua correlação com os níveis de leão muscular
Physical training is known to induce a large number of adaptations in whole body. One of the most studied is the increase in musle oxidative metabolism, mainly because the rise in Krebs cycle, ?-oxidation of fatty acids and electron transport chain enzymes. Although, exercise can increase free radicaIs generation too) and if the cells are not able to detoxii
Publicado em: 1999
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20. Membrane transport influences the rate of accumulation of cytosine arabinoside in human leukemia cells.
The role of membrane transport in the cellular accumulation of 1-beta-D-arabinofuranosylcytosine (ara-C) was studied in freshly isolated human acute leukemia cells. Patient cells had low rates for ara-C transport as compared with human and murine experimental cells and correspondingly low binding capacities for the nucleoside transport inhibitor, nitrobenzyl
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21. Sodium and Potassium Compartmentation and Transport in the Roots of Intact Lettuce Plants 1
In this report, we consider the accumulation in roots, and transport to the shoot, of Na+ and K+ in intact lettuce plants (Lactuca sativa cv Black-seeded Simpson). Plants were grown in modified Hoagland medium supplemented with 10 moles NaCl per cubic meter. At this salinity, significant levels of Na+ were accumulated in roots and shoots, but there was no re
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22. The effect of insulin dose on the measurement of insulin sensitivity by the minimal model technique. Evidence for saturable insulin transport in humans.
Administration of exogenous insulin during an intravenous glucose tolerance test allows the use of the minimal model technique to determine the insulin sensitivity index in subjects with reduced endogenous insulin responses. To study the effect of different insulin administration protocols, we performed three intravenous glucose tolerance tests in each of se
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23. Increased AS160 phosphorylation, but not TBC1D1 phosphorylation, with increased postexercise insulin sensitivity in rat skeletal muscle
A single exercise bout can increase insulin-independent glucose transport immediately postexercise and insulin-dependent glucose transport (GT) for several hours postexercise. Akt substrate of 160 kDa (AS160) and TBC1D1 are paralog Rab GTPase-activating proteins that have been proposed to contribute to these exercise effects. Previous research demonstrated g
American Physiological Society.
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24. Effect of acidosis on chloride transport in the cortical thick ascending limb of Henle perfused in vitro.
The present studies examined the effect of acute in vitro acidosis on chloride reabsorption in the rabbit cortical thick ascending limb of Henle (cTALH). Four protocols were used: hypercapnic acidosis; "isocapnic" peritubular acidosis (bath bicarbonate reduction to 10 mM); isocapnic luminal acidosis (luminal bicarbonate reduction to 10 mM); isocapnic peritub