Results 21 to 30 of about 1,853,438 (196)

Study on Frequency Characteristics of Rotor Systems for Fault Detection Using Variational Mode Decomposition

open access: yesInternational Journal of Rotating Machinery, 2017
Due to the complicated structure, vibration signal of rotating machinery is multicomponent with nonstationary and nonlinear features, so it is difficult to diagnose faults effectively.
Kai Chen   +3 more
doaj   +1 more source

On the Decomposition of Multivariate Nonstationary Multicomponent Signals

open access: yesCoRR, 2019
With their ability to handle an increased amount of information, multivariate and multichannel signals can be used to solve problems normally not solvable with signals obtained from a single source. One such problem is the decomposition signals with several components whose domains of support significantly overlap in both the time and the frequency ...
Ljubisa Stankovic   +3 more
openaire   +3 more sources

On Demodulation, Ridge Detection, and Synchrosqueezing for Multicomponent Signals [PDF]

open access: yesIEEE Transactions on Signal Processing, 2017
In this paper, we present a novel technique for the retrieval of the modes of a multicomponent signal using a time-frequency (TF) representation of the signal. Our approach is based on a novel ridge extraction method that takes into account the fact that the TF representation is both discrete in time and frequency, followed by a demodulation procedure.
Sylvain Meignen   +2 more
openaire   +2 more sources

Synthetic Pores as Sensors: Focus on Zinc Filters for IP7 and Phytate Contents in Lentils, Almonds, and Soybeans

open access: yesCHIMIA, 2008
Recent experimental evidence confirms synthetic pores as operational multicomponent sensors in complex matrices. This work in practice is summarized, with emphasis on topics of current concern which exemplify the use of enzymes as signal ...
Sara M. Butterfield, Stefan Matile
doaj   +1 more source

A Novel Thresholding Technique for the Denoising of Multicomponent Signals [PDF]

open access: yes2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2018
This paper addresses the issues of the denoising and retrieval of the components of multicomponent signals from their short-time Fourier transform (STFT). After having recalled the hard-thresholding technique, in the STFT context, we develop a new thresholding technique by exploiting some limitations of the former.
Duong-Hung Pham, Sylvain Meignen
openaire   +2 more sources

Interference Excision in Spread Spectrum Communications Using Adaptive Positive Time-Frequency Analysis

open access: yesEURASIP Journal on Wireless Communications and Networking, 2007
This paper introduces a novel algorithm to excise single and multicomponent chirp-like interferences in direct sequence spread spectrum (DSSS) communications.
Sridhar Krishnan   +1 more
doaj   +2 more sources

Model of multicomponent micro-Doppler signal in environment MatLab

open access: yesMATEC Web of Conferences, 2017
The article illustrates the problem of measuring the speed glider component targets in the presence of a turboprop effect of the reflected signal in a pulse-Doppler radar, proposed a model turboprop signal component and an algorithm for its ...
Kucheryavenko Alexander   +1 more
doaj   +1 more source

Adaptive Bandwidth Fourier Decomposition Method for Multi-Component Signal Processing

open access: yesIEEE Access, 2019
Variational mode decomposition (VMD) is a practical signal decomposition approach, which extracts the modes through bandwidth optimization in the frequency domain.
Minqiang Deng   +3 more
doaj   +1 more source

The effect of past condition on a multicomponent sexual signal [PDF]

open access: yesProceedings of the Royal Society of London. Series B: Biological Sciences, 2003
Sexual-selection theory predicts that multiple signals may reveal male condition at different stages of life, thus allowing females to make a more reliable assessment of male quality. While the effect of current condition on signal design is well established, few studies have experimentally investigated the effects of past condition.
Scheuber H, Jacot A, Brinkhof MW
openaire   +3 more sources

Rigorous Multicomponent Reactive Separations Modelling : Complete Consideration of Reaction-Diffusion Phenomena [PDF]

open access: yes, 2010
This paper gives the first step of the development of a rigorous multicomponent reactive separation model. Such a model is highly essential to further the optimization of acid gases removal plants (CO2 capture, gas treating, etc.) in terms of size and ...
Ahmadi, Aras   +20 more
core   +1 more source

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