Signal Priority
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Phylogenetic community structure reveals differences in plant community assembly of an oligotrophic white-sand ecosystem from the Brazilian Atlantic Forest
ABSTRACT Mussununga, an oligotrophic sandy savanna ecosystem, comprises distinct physiognomies along fire, water and nutrient availability gradients. Grasslands and woodlands are constrained at the opposite poles of these gradients, with grasslands occurring in areas with poorer soils and higher levels of both water-stress and fire intensity. According to th
Acta Bot. Bras.. Publicado em: 21/09/2017
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2. Um estudo de escalonamento UPLINK considerando a camada física OFDM do padrão IEEE 802.16 / A study of uplink scheduling considering the OFDM physical layer of IEEE 802.16 standard
O padrão IEEE 802.16 define as especificações para a camada de controle de acesso ao meio (MAC - Medium Access Control ) e os parâmetros para a camada física (PHY - Physical Layer), os quais possibilitam estruturar a arquitetura para o provimento QoS (Quality of Service) às redes de acesso em banda larga sem fio [1, 2]. No entanto, deixa em aberto a fo
Publicado em: 2011
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3. Policy of priority of access for stations with different rates in 802.11b networks based on SNR / Política de priorização de acesso de estações com taxas diferentes para redes 802.11 baseada na SNR
Redes 802.11 apresentam uma anomalia quando existem estações com diferentes taxas conectadas a um mesmo ponto de acesso. Estações com boa SNR (Signal-to-Noise Rate) obtêm um desempenho pior que estações com pior SNR. Esta condição é esperada de forma agravada em redes públicas com vários usuários se conectando a diferentes taxas. Neste trabalho
Publicado em: 2008
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4. Análise e Síntese de um Algoritmo Phase-Locked-Loop Robusto para Estimação de Amplitude, Fase e Freqüência de Sinais Elétricos
The always more restrictive energy quality benchmarks, pushed on by consumers, associated with the electric sector deregulamentation has been imposing the necessity, for the concessionaries, of a better and decentralized monitoring of energy electric quality. At the same time, the increase of nonlinear loads connected to the electric network, among other fac
Publicado em: 2007
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5. Melhoria da performance dos Ãnibus em corredores de trÃfego misto: estudo de caso do corredor da Avenida Norte no Recife
Este trabalho analisa medidas de engenharia de trÃfego e operacionais que possam contribuir para a performance do transporte coletivo por Ãnibus em corredores onde estes veÃculos atuem em trÃfego misto. Foram estudados o impacto em reduÃÃo de tempo ao se dispor de paradas de embarque e desembarque com piso nivelado ao primeiro degrau do Ãnibus. TambÃ
Publicado em: 2007
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6. HIV : knowledge, attitude and behaviour of the dental surgeon in the Mato Grosso state / HIV/AIDS : conhecimento, atitudes e comportamento de cirurgiões-dentistas no estado de Mato Grosso
Independent of the knowledge or not the Dental Surgeon have treated patient infection for the retrovirus HIV. The AIDS, (Acquire Immuno-Deficient Syndrome) is caracterized for immunodepressor and destroytion of lymphocyte T4 just the action of the H.I.V.( Human Immunodeficiency Virus) , what determine the appearing of the opportune grave infection and neopla
Publicado em: 2007
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7. Localização Física do BAC Clone AL 619337 no Genoma de Schistosoma mansoni Utilizando a Técnica de FISH (Fluorescence in situ Hybridization)
The Schistosoma mansoni genome physical map is under construction and large DNA fragments localization by FISH is priority for this strategy. Therefore, little information about this respect is actually available. To contribute with this initiative, a BAC clone DNA was located on the S. mansoni genome by FISH technique in this work. The BAC DNA was labeled b
Publicado em: 2004
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8. Covert attention accelerates the rate of visual information processing
Whenever we open our eyes, we are confronted with an overwhelming amount of visual information. Covert attention allows us to select visual information at a cued location, without eye movements, and to grant such information priority in processing. Covert attention can be voluntarily allocated, to a given location according to goals, or involuntarily al
The National Academy of Sciences.
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9. Peroxisomal Catalase in the Methylotrophic Yeast Candida boidinii: Transport Efficiency and Metabolic Significance
In this study we cloned CTA1, the gene encoding peroxisomal catalase, from the methylotrophic yeast Candida boidinii and studied targeting of the gene product, Cta1p, into peroxisomes by using green fluorescent protein (GFP) fusion proteins. A strain from which CTA1 was deleted (cta1Δ strain) showed marked growth inhibition when it was grown on the peroxiso
American Society for Microbiology.