Results 31 to 40 of about 1,945,969 (313)

Application of nonlinear regression in the analysis of relaxation photocurrent waveforms [PDF]

open access: yesMetrology and Measurement Systems, 2023
This article discusses the performance of an algorithm for detection of defect centers in semiconductor materials. It is based on direct parameter approximation with nonlinear regression to determine the parameters of thermal emission rate in the ...
Witold Kaczmarek   +4 more
doaj   +1 more source

Model waveform accuracy standards for gravitational wave data analysis [PDF]

open access: yes, 2008
Model waveforms are used in gravitational wave data analysis to detect and then to measure the properties of a source by matching the model waveforms to the signal from a detector.
Brown, Duncan A.   +2 more
core   +1 more source

A template-free approach for waveform extraction of gravitational wave events

open access: yesScientific Reports, 2021
We develop a general data-driven and template-free method for the extraction of event waveforms in the presence of background noise. Recent gravitational-wave observations provide one of the significant scientific areas requiring data analysis and ...
A. Akhshi   +5 more
doaj   +1 more source

Using the Features Extracted From the Ambient Noise Cross-Correlation Function to Evaluate the Performance of Broadband Seismograph

open access: yesIEEE Access, 2022
Broadband seismographs are used to collect seismic data over an extended period. Temperature, pressure, and humidity are field variables that can have an impact on the broadband seismograph’s performance as well as the accuracy of observational ...
Xue Bao, Fang Ye, Han Zhang, Chunwei Jin
doaj   +1 more source

Measuring the Angular Momentum Distribution in Core-Collapse Supernova Progenitors with Gravitational Waves [PDF]

open access: yes, 2013
The late collapse, core bounce, and the early postbounce phase of rotating core collapse leads to a characteristic gravitational wave (GW) signal. The precise shape of the signal is governed by the interplay of gravity, rotation, nuclear equation of ...
Abdikamalov, Ernazar   +3 more
core   +2 more sources

Searching for Gravitational Waves from the Inspiral of Precessing Binary Systems: Astrophysical Expectations and Detection Efficiency of "Spiky'' Templates [PDF]

open access: yes, 2003
Relativistic spin-orbit and spin-spin couplings has been shown to modify the gravitational waveforms expected from inspiraling binaries with a black hole and a neutron star.
A. Abramovici   +32 more
core   +4 more sources

Signal design and processing for noise radar

open access: yesEURASIP Journal on Advances in Signal Processing, 2022
An efficient and secure use of the electromagnetic spectrum by different telecommunications and radar systems represents, today, a focal research point, as the coexistence of different radio-frequency sources at the same time and in the same frequency ...
G. Galati   +2 more
semanticscholar   +1 more source

Inferring Core-Collapse Supernova Physics with Gravitational Waves [PDF]

open access: yes, 2012
Stellar collapse and the subsequent development of a core-collapse supernova explosion emit bursts of gravitational waves (GWs) that might be detected by the advanced generation of laser interferometer gravitational-wave observatories such as Advanced ...
A. Burrows   +17 more
core   +2 more sources

Modelling the effects of transcranial alternating current stimulation on the neural encoding of speech in noise

open access: yesNeuroImage, 2021
Transcranial alternating current stimulation (tACS) can non-invasively modulate neuronal activity in the cerebral cortex, in particular at the frequency of the applied stimulation.
Mikolaj Kegler, Tobias Reichenbach
doaj   +1 more source

A proximal iteration for deconvolving Poisson noisy images using sparse representations [PDF]

open access: yes, 2008
We propose an image deconvolution algorithm when the data is contaminated by Poisson noise. The image to restore is assumed to be sparsely represented in a dictionary of waveforms such as the wavelet or curvelet transforms.
Dupé, François-Xavier   +2 more
core   +5 more sources

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