Results 31 to 40 of about 397,815 (169)

Graphene Nanogrids FET Immunosensor: Signal to Noise Ratio Enhancement

Sensors, 2016
Recently, a reproducible and scalable chemical method for fabrication of smooth graphene nanogrids has been reported which addresses the challenges of graphene nanoribbons (GNR).
Jayeeta Basu, Chirasree RoyChaudhuri
doaj   +1 more source

Improving the signal-to-noise ratio of single-pixel imaging using digital microscanning.

Optics Express, 2016
Single-pixel cameras provide a means to perform imaging at wavelengths where pixelated detector arrays are expensive or limited. The image is reconstructed from measurements of the correlation between the scene and a series of masks.
Ming-jie Sun, M. Edgar, D. Phillips, G. Gibson, M. Padgett   +4 more
semanticscholar   +1 more source

Measuring noise in classrooms: a systematic review

CoDAS
PURPOSE: The aim of this systematic review is to outline the main methodologies used for measuring noise in classrooms and if the noise levels found are suitable standards.
Vanessa Luisa Destro Fidêncio, Adriane Lima Mortari Moret, Regina Tangerino de Souza Jacob   +2 more
doaj   +1 more source

Design of Piecewise Uniform Scalar Quantizer with Geometric Progression of Segment Width

Advances in Electrical and Computer Engineering, 2011
In this paper, the design procedure of the piecewise uniform scalar quantizer having segments with widths that form a geometric progression is presented.
NIKOLIC, J., PERIC, Z.
doaj   +1 more source

A study on correlation between thyroid CT radiation dose, image quality and female body composition [PDF]

Zhongguo aizheng zazhi
Background and purpose: With the increasing use of medical imaging examinations, Computed tomography (CT) scans have become one of the primary sources of effective dose.
SHEN Xigang, LIN Chengxiang, PENG Weijun, GU Yajia
doaj   +1 more source

Pitfalls in the Detection of Hearing Loss via Otoacoustic Emissions

Applied Sciences, 2021
Otoacoustic emissions (OAEs) are currently used as a valuable audiological test or as a hearing screening tool. There are many commercially available OAE recording systems that are used both for clinical practice and for research.
W. Wiktor Jedrzejczak, Elżbieta Gos, Edyta Pilka, Piotr H. Skarzynski, Henryk Skarzynski, Stavros Hatzopoulos   +5 more
doaj   +1 more source

The Influence of the Signal-to-Noise Ratio upon Radio Occultation Retrievals

Remote Sensing, 2022
We study the dependence of radio occultation (RO) inversion statistics on the signal-to-noise ratio (SNR). We use observations from four missions: COSMIC, COSMIC-2, METOP-B, and Spire.
Michael Gorbunov, Vladimir Irisov, Christian Rocken   +2 more
doaj   +1 more source

Two-Path Conventional Neural Network Based Signal-to-Noise Ratio Evaluation for UAV Communication Link

Applied Sciences, 2023
With the development of information technology, unmanned aerial vehicles (UAVs) have become an indispensable and important part of daily life and they have brought great convenience to life. Evaluating the signal-to-noise ratio (SNR) of UAV communication
Yiyang Xiong, Yuzhou Yang, Xiaojun Jing
doaj   +1 more source

Multiplane wave imaging increases signal-to-noise ratio in ultrafast ultrasound imaging

Physics in Medicine and Biology, 2015
Ultrafast imaging using plane or diverging waves has recently enabled new ultrasound imaging modes with improved sensitivity and very high frame rates.
E. Tiran, T. Deffieux, M. Correia, D. Maresca, B. Osmanski, Lim-Anna Sieu, Antoine Bergel, I. Cohen, M. Pernot, M. Tanter   +9 more
semanticscholar   +1 more source

Design of Switched Quantizers and Speech Coding Based on Quasi-Logarithmic Compandor

Elektronika ir Elektrotechnika, 2018
This article investigates switched quantizers for speech signal depicted with Gaussian probability density function (PDF). Gaussian PDF is better for smaller frame lengths that are represented here.
Nikola J. Vucic, Zoran H. Peric, Goran M. Petkovic   +2 more
doaj   +1 more source