Short Term Fluctuation
Mostrando 1-9 de 9 artigos, teses e dissertações.
-
1. Curva a termo para o risco de conversibilidade: uma abordagem utilizando o diferencial de juros / Convertibility risk yield curve: an approach using the interest spread
This paper has the purpose of explaining the fluctuation of the convertibility risk (spread) through an alternative to the commonly used on the literature, exchange rate parity differential (DPC) measurement. The Brazilian convertibility risk will be calculated as the differential between the interest rate in dollars paid in Brazil and interest rate in dolla
Publicado em: 2009
-
2. DINÂMICA POPULACIONAL DE TRACHEMYS DORBIGNI, (TESTUDINES: EMYDIDAE) EM AMBIENTE ANTRÓPICO EM PELOTAS, RS / POPULATIONAL DYNAMIC OF TRACHEMYS DORBIGNI (TESTUDINES: EMYDIDAE) IN AN ANTHROPIC ENVIRONMENT IN SOUTHERN BRAZIL
Informations about the population dynamic of Trachemys dorbigni were collected from February 2006 to January 2007, in the Santa Barbara stream, Pelotas, Brazil. It was collected 377 individuals in the traps, 160 females, 146 males and 71 juveniles. The sex ratio was not different from 1:1. Males of T. dorbigni reached sexual maturity at 127 mm length. The sm
Publicado em: 2007
-
3. Flicker perimetry in healthy subjects : influence of age and gender, learning effect and short term fluctuation / Perimetria flicker em individuos normais : influencia da idade e sexo, efeito aprendizado e flutuação a curto prazo
O objetivo deste estudo foi determinar os valores médios da freqüência crítica de fusão (FCF), a flutuação a curto prazo e a variabilidade inter e intra-individual, analisar a influência da idade e sexo e investigar a ocorrência de efeito aprendizado em indivíduos normais submetidos à perimetria "flicker". A investigação foi dividida em dois est
Publicado em: 2006
-
4. New approach to estimating variability in visual field data using an image processing technique.
AIMS--A new framework for evaluating pointwise sensitivity variation in computerised visual field data is demonstrated. METHODS--A measure of local spatial variability (LSV) is generated using an image processing technique. Fifty five eyes from a sample of normal and glaucomatous subjects, examined on the Humphrey field analyser (HFA), were used to illustrat
-
5. Activity patterns of neurosecretory cells releasing pheromonotropic neuropeptides in the moth Bombyx mori
Short- and long-term firing patterns of neurosecretory cells releasing pheromonotropic neuropeptides in the silkworm moth Bombyx mori were examined. The cells showed three types of rhythmic changes in firing activity. Bursting activities with an interval of several seconds were synchronized with rhythmic abdominal motions for calling behavior. A slow fluctua
The National Academy of Sciences.
-
6. Evaluation of the Humphrey FASTPAC threshold program in glaucoma.
The makers of the Humphrey perimeter have developed a rapid thresholding program, FASTPAC, to address the problems of fatigue and poor test performance associated with prolonged perimetry. The performance of FASTPAC was compared with the standard threshold program of the Humphrey visual field analyser (program 24-2) in 44 glaucoma patients. FASTPAC reduced t
-
7. Adenosine 5′-Triphosphate Flux Through the North Inlet Marsh System †
The distribution, fluctuation, and short-term transport of total microbial biomass (measured as adenosine 5′-triphosphate [ATP]) was investigated in a large salt marsh creek. Hourly samples were collected synoptically for 25 h from 10 boats positioned across the 320-m width of the creek. Samples were collected from three depths ranging from 0.2 to 8.0 m. H
-
8. Paired-pulse facilitation and depression at unitary synapses in rat hippocampus: quantal fluctuation affects subsequent release.
1. Excitatory synaptic transmission between pairs of monosynaptically coupled pyramidal cells was examined in rat hippocampal slice cultures. Action potentials were elicited in single CA3 pyramidal cells impaled with microelectrodes and unitary excitatory postsynaptic currents (EPSCs) were recorded in whole-cell voltage-clamped CA1 or CA3 cells. 2. The ampli
-
9. Temporal fluctuations in coherence of brain waves.
As a measure of dynamical structure, short-term fluctuations of coherence between 0.3 and 100 Hz in the electroencephalogram (EEG) of humans were studied from recordings made by chronic subdural macroelectrodes 5-10 mm apart, on temporal, frontal, and parietal lobes, and from intracranial probes deep in the temporal lobe, including the hippocampus, during sl