Signal To Noise Ratios
Mostrando 1-12 de 41 artigos, teses e dissertações.
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1. ELECTRICAL NOISES REDUCTION IN NANOPORES EXPERIMENTS BASED ON CONSENSUS FILTER
Nanopore has developed into an indispensable tool for single molecules experiments, where useful information about the characteristics of DNA/RNA can be obtained from the flowing of ionic current elicited by individual molecules as they traverse a single nanometer-scale aperture. However, due to the relatively high background current noise and low measuremen
Quím. Nova. Publicado em: 20/07/2020
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2. Mensuração do esforço auditivo com o uso de um paradigma de tarefa dupla do Português Brasileiro: estudo-piloto
RESUMO Objetivo Mensurar o esforço auditivo com o uso de um paradigma de tarefa dupla de memória operacional e analisar a significância clínica do desempenho de indivíduos normo-ouvintes. Método Participaram 10 adultos jovens, entre 18 e 30 anos, de ambos os gêneros, normo-ouvintes classificados segundo a média quadritonal (500, 1000, 2000 e 4000Hz
CoDAS. Publicado em: 29/08/2019
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3. Comparação de aquisições cartesiana e radial nas sequências short tau inversion recovery (STIR) na RM de mama
Resumo Objetivo: Comparar duas sequências de aquisição, cartesiana e radial (BLADE) ponderadas em short-tau inversion recovery (STIR), em exames de ressonância magnética de mama. Materiais e Métodos: Noventa e seis pacientes foram submetidas a exame de ressonância magnética de mama em 1,5 T (48 aquisições STIR cartesianas e 48 aquisições STIR B
Radiol Bras. Publicado em: 20/07/2017
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4. Rice detector: proposal of a novel objective response detection technique
INTRODUCTION: The detection of the somatosensory response (SR) is an important tool for the neurophysiological evaluation in the intra and post-operative period of some vascular and spine surgeries. Particularly, the SR identification with a maximum false positive ratio by means of Objective Response Detection (ORD) techniques could lead to a less subjective
Rev. Bras. Eng. Bioméd.. Publicado em: 2013-12
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5. Estudo do potencial da técnica de nanossísmica para o monitoramento de hidrofraturamento em reservatórios de hidrocarbonetos
Hydraulic fracturing is an operation in which pressurised fluid is injected in the geological formation surrounding the producing well to create new permeable paths for hydrocarbons. The injection of such fluids in the reservoir induces seismic events. The measurement of this reservoir stimulation can be made by location these induced microseismic events. Ho
Publicado em: 2010
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6. Fundo estocástico de ondas gravitacionais gerados por buracos negros pré-galáctiocs / Stochastic Background of Gravitational Waves Generated By pre-galactic Black Hole Formation
Observation of the Cosmic Microwave Background Radiation (CMB) provide us with a clear information about the status of matter and radiation at the decoupling era like a snapshot of the Universe 300.000 years after the Big-Bang. Nowadays, through observations of the cosmic structure, we can build-up the history of the Universe from one billion years after the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/02/2008
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7. Process parameter optimization for fly ash brick by Taguchi method
This paper presents the results of an experimental investigation carried out to optimize the mix proportions of the fly ash brick by Taguchi method of parameter design. The experiments have been designed using an L9 orthogonal array with four factors and three levels each. Small quantity of cement has been mixed as binding materials. Both cement and the fly
Materials Research. Publicado em: 2008-06
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8. Fundo estocástico de ondas gravitacionais gerados por buracos negros pré-galáctiocs / Stochastic Background of Gravitational Waves Generated By pre-galactic Black Hole Formation
Observation of the Cosmic Microwave Background Radiation (CMB) provide us with a clear information about the status of matter and radiation at the decoupling era like a snapshot of the Universe 300.000 years after the Big-Bang. Nowadays, through observations of the cosmic structure, we can build-up the history of the Universe from one billion years after the
Publicado em: 2008
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9. Utilização da múltipla voltametria de onda quadrada na determinação eletroanalítica de compostos orgânicos e inorgânicos
This paper reports the development of multiple square wave voltammetry and the possibilities of its use for electroanalytical determinations of organic and inorganic compounds with the improvement of the signal-to-noise ratios and detection limits 2-3 orders of magnitude lower than those obtained with conventional square wave voltammetry. The theoretical asp
Química Nova. Publicado em: 2007-04
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10. LIMIARES E ÍNDICES PERCENTUAIS DE RECONHECIMENTO DE SENTENÇAS NO RUÍDO, EM CAMPO LIVRE, PARA INDIVÍDUOS ADULTOS / TRESHOLDS AND PERCENTUAL INDEXES OF RECOGNITION SENTENCES IN THE NOISE, AT THE SOUND FIELD, FOR GROWN UPS INDIVIDUALS
At the same time that the society has the comfort reached by the evolution in technology, it comes across with something bad that comes from the same evolution: the competitive noise and, consequently, the difficulty with the verbal communication. Moreover, complaints made by individuals who are not being able to comprehend speeches in the presence of noise
Publicado em: 2006
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11. Proposição e avaliação de indicadores de desempenho para algoritmos de restauração de imagens / Proposition and evaluation of different performance indicators for image processing algorithms
The restoration of images acquired with Atomic Force Microscopes (AFM) consists on a very intense research area in nanotechnology. During the acquisition process the AFM images are subjected to the constraints imposed by the experimental apparatus usually presenting poor signal to noise ratios as well as the effects of tip-sample interaction. In order to pro
Publicado em: 2006
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12. Caracterização de um sistema imageador infravermelho termal através de suas resoluções espacial e radiométrica / Characterization of a thermal infrared line scanner trough its spatial and radiometric resolutions
A faixa espectral do infravermelho termal para sensores aerotransportados ainda é pouco explorada no País. O Instituto de Estudos Avançados (IEAv) do Centro Técnico Aeroespacial (CTA) desenvolveu o Sistema Imageador Infravermelho Termal (SISIMI), um sensor-protótipo termal aerotransportado que opera na faixa de 8 a 12,5 µm e com imageamento por varredu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/10/2002