Results 41 to 50 of about 397,815 (169)
A High Signal-to-Noise Ratio Composite Quasar Spectrum
, 1991 A very high signal-to-noise ratio (S/N of about 400) composite spectrum of the rest-frame ultraviolet and optical region of high luminosity quasars is presented.
P. Francis +5 more
semanticscholar +1 more source
Non-uniformity of Clinical Head, Head and Neck, and Body Coils in Magnetic Resonance Imaging (MRI) [PDF]
Iranian Journal of Medical Physics, 2014 Introduction Signal intensity uniformity in a magnetic resonance (MR) image indicates how well the MR imaging (MRI) system represents an object. One of the major sources of image non-uniformity in high-field MRI scanners is inhomogeneity of radio ...
Mahmood Nazarpoor
doaj +1 more source
Estimation of SNR Including Quantization Error of Multi-Wavelength Lidar Receiver
Al-Khawarizmi Engineering Journal, 2013 This paper comprises the design and operation of mono-static backscatter lidar station based on a pulsed Nd: YAG laser that operates at multiple wavelengths.
Zena A. Abed, Muna M. Hummady
doaj +2 more sources
Risk Ratio regression -- simple concept yet complex computation [PDF]
arXiv, 2022 The Risk Ratio (RR) is the ratio of the outcome among the exposed to risk of the outcome among the unexposed. This is a simple concept, which makes one wonder why it has not gained the same popularity as the odds ratio. Using logistic regression to estimate the odds ratio is quite common in epidemiology and interpreting the odds ratio as a risk ratio ...
arxiv
, 2015 . All eddy-covariance flux measurements are associated with random uncertainties which are a combination of sampling error due to natural variability in turbulence and sensor noise.
B. Langford +4 more
semanticscholar +1 more source
Direct Amortized Likelihood Ratio Estimation [PDF]
arXiv, 2023 We introduce a new amortized likelihood ratio estimator for likelihood-free simulation-based inference (SBI). Our estimator is simple to train and estimates the likelihood ratio using a single forward pass of the neural estimator. Our approach directly computes the likelihood ratio between two competing parameter sets which is different from the ...
arxiv
Measuring the signal-to-noise ratio of a neuron
Proceedings of the National Academy of Sciences of the United States of America, 2015 Significance Neurons represent both signal and noise in binary electrical discharges termed action potentials. Hence, the standard signal-to-noise ratio (SNR) definition of signal amplitude squared and divided by the noise variance does not apply.
G. Czanner +9 more
semanticscholar +1 more source
IEEE Journal of the Electron Devices Society, 2015 In this paper, silicon-based Hall cross sensors with different device dimensions and carrier densities are designed and fabricated. Low frequency noise behavior regarding to the device dimension and carrier density of the Hall cross sensors has been ...
Dongli Zhang, Mingxiang Wang, Kai Sun
doaj +1 more source
International Journal of Environmental Health EngineeringAim: The aim of this study was to gauge the condition of otoacoustic emissions (OAEs) in workers, followed by modeling and estimating the weight of factors affecting changes in their emissions. Methods: The present study comprises two main phases. In the
Sajad Zare +2 more
doaj +1 more source
International Archives of Otorhinolaryngology, 2023 IntroductionâOlder individuals often report that they find it difficulty in enjoying watching television since they find it hard to follow the rapid intensity variations, and voice changes from scene to scene.
Hemanth Narayan Shetty +2 more
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