Results 31 to 40 of about 338,685 (349)

Turbulence Time Series Data Hole Filling using Karhunen-Loeve and ARIMA methods [PDF]

open access: yes, 2007
Measurements of optical turbulence time series data using unattended instruments over long time intervals inevitably lead to data drop-outs or degraded signals.
Beran J   +15 more
core   +2 more sources

A comparative study of single-channel signal processing methods in fetal phonocardiography.

open access: yesPLoS ONE, 2022
Fetal phonocardiography is a non-invasive, completely passive and low-cost method based on sensing acoustic signals from the maternal abdomen. However, different types of interference are sensed along with the desired fetal phonocardiography.
Katerina Barnova   +4 more
doaj   +1 more source

Analysis of Vehicle Platform Vibration Based on Empirical Mode Decomposition

open access: yesShock and Vibration, 2021
Vehicle platform vibration (VPV) directly affects the measurement accuracy of precise measuring instrument (PMI) fixed on it. In order to reduce the influences of VPV on measurement accuracy, it is necessary to perform vibration isolation between vehicle
Chengwu Shen   +5 more
doaj   +1 more source

Surface electromyography signal denoising via EEMD and improved wavelet thresholds

open access: yesMathematical Biosciences and Engineering, 2020
The acquisition of good surface electromyography (sEMG) is an important prerequisite for correct and timely control of prosthetic limb movements. sEMG is nonlinear, nonstationary, and vulnerable against noise and a new sEMG denoising method using ...
Ziyang Sun   +4 more
doaj   +1 more source

Seizure detection from EEG signals using Multivariate Empirical Mode Decomposition [PDF]

open access: yes, 2017
We present a data driven approach to classify ictal (epileptic seizure) and non-ictal EEG signals using the multivariate empirical mode decomposition (MEMD) algorithm.
Ehsan, Shoaib   +4 more
core   +1 more source

Adaptive Mode Decomposition Methods and Their Applications in Signal Analysis for Machinery Fault Diagnosis: A Review With Examples

open access: yesIEEE Access, 2017
Effective signal processing methods are essential for machinery fault diagnosis. Most conventional signal processing methods lack adaptability, thus being unable to well extract the embedded meaningful information.
Zhipeng Feng, Dong Zhang, Ming J. Zuo
doaj   +1 more source

Empirical mode decomposition with shape-preserving spline interpolation

open access: yesResults in Applied Mathematics, 2020
Empirical mode decomposition (EMD) is a popular, novel, user-friendly algorithm to decompose a given signal into its constituting components, utilizing spline interpolation.
Maria D. van der Walt
doaj   +1 more source

Time-frequency representation of earthquake accelerograms and inelastic structural response records using the adaptive chirplet decomposition and empirical mode decomposition [PDF]

open access: yes, 2007
In this paper, the adaptive chirplet decomposition combined with the Wigner-Ville transform and the empirical mode decomposition combined with the Hilbert transform are employed to process various non-stationary signals (strong ground motions and ...
A. Giaralis   +31 more
core   +1 more source

An improved genetic algorithm for optimizing ensemble empirical mode decomposition method

open access: yesSystems Science & Control Engineering, 2019
This paper proposes an improved ensemble empirical mode decomposition method based on genetic algorithm to solve the mode mixing problem in empirical mode decomposition (EMD) algorithm as well as the parameters selection issue in ensemble empirical mode ...
Dabin Zhang   +3 more
doaj   +1 more source

Empirical Mode Decomposition Based Multi-Modal Activity Recognition

open access: yesSensors, 2020
This paper aims to develop an activity recognition algorithm to allow parents to monitor their children at home after school. A common method used to analyze electroencephalograms is to use infinite impulse response filters to decompose the ...
Lingyue Hu   +4 more
doaj   +1 more source

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