Results 1 to 10 of about 397,815 (169)

On the definition of signal-to-noise ratio and contrast-to-noise ratio for FMRI data. [PDF]

open access: yesPLoS ONE, 2013
Signal-to-noise ratio, the ratio between signal and noise, is a quantity that has been well established for MRI data but is still subject of ongoing debate and confusion when it comes to fMRI data.
Marijke Welvaert, Yves Rosseel
doaj   +2 more sources

Increase in signal-to-noise ratio of > 10,000 times in liquid-state NMR

open access: greenProceedings of the National Academy of Sciences of the United States of America, 2003
Jan Henrik Ardenkjær‐Larsen   +8 more
openalex   +2 more sources

Increasing signal-to-noise ratio and retrieving signal in SNR [PDF]

open access: yesIranian Journal of Physics Research, 2020
Detection of weak signals is one of the important issues in spectroscopy. The most important parameters of this field is the signal to noise ratio, which has a significant effect on the accuracy of the final data.
M bakhshian, H Abbasi
doaj   +1 more source

Reconfigurable Intelligent Surface Optimal Placement in Millimeter-Wave Networks

open access: yesIEEE Open Journal of the Communications Society, 2021
This work discusses the optimal reconfigurable intelligent surface placement in highly-directional millimeter wave links. In particular, we present a novel system model that takes into account the relationship between the transmission beam footprint at ...
Konstantinos Ntontin   +5 more
doaj   +1 more source

High Signal-to-Noise Ratio MEMS Noise Listener for Ship Noise Detection

open access: yesRemote Sensing, 2023
Ship noise observation is of great significance to marine environment research and national defense security. Acoustic stealth technology makes a variety of ship noise significantly reduced, which is a new challenge for marine noise monitoring.
Shan Zhu   +8 more
doaj   +1 more source

LISA for cosmologists: Calculating the signal-to-noise ratio for stochastic and deterministic sources [PDF]

open access: yesPhysical Review D, 2019
We present the steps to forecast the sensitivity of the Laser Interferometer Space Antenna (LISA) to both a stochastic gravitational wave background and deterministic wave sources. We show how to use these expressions to estimate the precision with which
Tristan L. Smith, R. Caldwell
semanticscholar   +1 more source

Signal-To-Noise Ratio: A Robust Distance Metric for Deep Metric Learning [PDF]

open access: yesComputer Vision and Pattern Recognition, 2019
Deep metric learning, which learns discriminative features to process image clustering and retrieval tasks, has attracted extensive attention in recent years.
Tongtong Yuan   +4 more
semanticscholar   +1 more source

Control of Healthcare-Associated Infections using Silver Nanoparticles in Radiology

open access: yesJournal of Medical Physics, 2022
Aims: The control of healthcare-associated infections (HCAIs) is a significant concern in the field of radiology due to multiple contact-transmitted pathogens on imaging devices.
Gyunheung Ahn, Sungchul Kim
doaj   +1 more source

Terahertz spectroscopy in biomedical field: a review on signal-to-noise ratio improvement

open access: yes, 2020
With the non-ionizing, non-invasive, high penetration, high resolution and spectral fingerprinting features of terahertz (THz) wave, THz spectroscopy has great potential for the qualitative and quantitative identification of key substances in biomedical ...
Yan Peng   +4 more
semanticscholar   +1 more source

Relationship between entropy and SNR changes in image enhancement

open access: yesEURASIP Journal on Image and Video Processing, 2017
There are many techniques of image enhancement. Their parameters are traditionally tuned by maximization of SNR criterion, which is unfortunately based on the knowledge of an ideal image.
Zuzana Krbcova, Jaromir Kukal
doaj   +1 more source

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