Controlled Traffic
Mostrando 13-24 de 30 artigos, teses e dissertações.
-
13. Análise do desempenho de WLAN com a implementação dos protocolos de segurança WEP e WPA/TKIP / Performance analysis of WLAN with the implementation of WEP and WPA/TKIP security protocols
Nowadays, the use of the wireless network technology has grown mainly motivated by the price of equipments, ease of installation, network maintenance and expansion of technical safety. The more you use the wireless network resource, the better should be the treatment related to its safety aspect. As the security level increases, the amount of information tra
Publicado em: 2008
-
14. Métrica para análise da qualidade de vídeo transmitido em redes sem fio / Metrics to analyze the quality of videos transmitted through wireless networks
The goal of this work is to propose a metric to analyze the quality of videos transmitted through wireless networks. A wireless network is a degenerative means to transmit data given its huge instability, which affects transmitted videos. The present proposal adds a technical network parameter, known as jitter, to clients opinion. For these studies a video w
Publicado em: 2008
-
15. QUALIDADE FÍSICO-HÍDRICA DE UM ARGISSOLO SOB FLORESTA E PASTAGEM NO SUL DO BRASIL / PHYSICO-HYDRIC QUALITY OF A HAPLUDALF UNDER FOREST AND PASTURE IN SOUTH BRAZIL
Soil compaction is a problem in different production systems: agriculture, pasture and forest. In the agriculture soil compaction is well documented, while in the pasture and forest its study is scarce. The objective of this study was to evaluate the physical-hydric quality of an Alfisol under forest and pasture in South Brazil, and stabilish parameters and
Publicado em: 2008
-
16. EstimaÃÃo SintÃtica de Matrizes Origem/Destino a partir de Contagens VolumÃtricas em Ãreas com Controle do TrÃfego em Tempo Real com o AuxÃlio do QueensOD / SYNTHETIC ESTIMATION OF ORIGIN/DESTINATION MATRICES BASED ON TRAFFIC COUNTS IN AREAS WITH REAL-TIME TRAFFIC CONTROL USINGQUEENSOD
Since 2000, Fortaleza has a modern urban traffic control system (CTAFOR) that, although efficiently reaching its operational objectives in controlling the urban traffic, does not solve all the congestion problems on the network. One way of improving the performance of such a system would be to gather precise information about the travel behavior within the a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/07/2007
-
17. Architecture and implementation of a topological information and traffic engineering service to RWA systems / Arquitetura e implementação de um serviço de informações topologicas e de engenharia de trafego para sistemas RWA
GMPLS-controlled all-optical networks are the promise to handle the increasing volume of IP traffic. The GMPLS routing and signaling protocols, mainly OSPF and RSVP, work in such a way that the route calculation for optical circuits does not take into account the wavelength (label) availability. This is not optimal in terms of network resources usage and blo
Publicado em: 2006
-
18. Avaliação da eficiência de métodos de coordenação semafórica em vias arteriais / Performance analysis of traffic signal synchronization methods for arterial streets
Traffic signal synchronization strategies are useful to improve traffic flow mobility and level of service of arterial streets. Therefore, technicians in charge of management of the traffic system operation should take advantage of the benefits of these tools, as always as possible, in order to define the most adequate traffic signal offsets. However, interv
Publicado em: 2005
-
19. A floor-controlled centralized conference system for distance learning. / Um sistema de conferência centralizada com controle de posse da palavra para educação à distância.
Este trabalho apresenta um sistema de conferência multiponto centralizada com controle de posse da palavra, que oferece comunicação por voz e por texto, desenvolvido para dar suporte a ferramentas de educação a distância baseadas em tecnologia web. Além do sistema de conferência multiponto, este trabalho introduz, também, conceitos de voz sobre IP (
Publicado em: 2004
-
20. ESTUDO DO DESEMPENHO DOS MATERIAIS DE DEMARCAÇÃO VIÁRIA RETRORREFLETIVOS
In this work, it was evaluated the performance, regarding to retroreflectivity and wear of several road marking materials, applied on a test field of known traffic conditions. It was also developed a device and methodology for the application of glass beads on road marking paints under controlled embedment, in laboratory. This methodology was used to establi
Publicado em: 1999
-
21. PKC controls HGF-dependent c-Met traffic, signalling and cell migration
The growth factor/receptor pair HGF/c-Met exerts control on proliferation, morphogenesis and motility, and through overexpression and mutation is implicated in cancer. Here we have investigated the relationship between receptor signalling and traffic, and its control by specific PKC isotypes. It is shown that c-Met signalling to the ERK cascade occurs within
Nature Publishing Group.
-
22. The CRASH trial: the first large-scale, randomised, controlled trial in head injury
The global epidemic of head injuries is just beginning. Many are caused by road traffic crashes. It is estimated that, by 2020, road traffic crashes will have moved from its present position of ninth to third in the world disease burden ranking, as measured in disability adjusted life years. In developing countries, it will have moved to second. The Corticos
BioMed Central.
-
23. Interferon-gamma regulates an antigen specific for endothelial cells involved in lymphocyte traffic.
One of the most striking examples of localized vascular differentiation is exhibited by specialized lymphoid organ venules that mediate the extravasation of circulating lymphocytes from the blood. These vessels are characterized by cuboidal or "high" endothelial cell morphology and are unique in their functional capacity to interact with migrating lymphocyte
-
24. Adenosine and ATP: traffic regulators in the kidney
Glomerular filtration in the kidney is a continuous process that acts in concert with tubular reabsorption to prevent derangements of body fluid composition. Filtration is regulated by systemic factors, but it is also controlled by an intrinsic mechanism based on the anatomical connection between the distal nephron and the glomerular arterioles. Facing the t
American Society for Clinical Investigation.