Results 1 to 10 of about 185,275 (165)

Influence of Sampling Frequency Ratio on Mode Mixing Alleviation Performance: A Comparative Study of Four Noise-Assisted Empirical Mode Decomposition Algorithms

open access: yesMachines, 2021
Four noise-assisted empirical mode decomposition (EMD) algorithms, i.e., ensemble EMD (EEMD), complementary ensemble EMD (CEEMD), complete ensemble EMD with adaptive noise (CEEMDAN), and improved complete ensemble EMD with adaptive noise (ICEEMDAN), are ...
Yanqing Zhao   +3 more
doaj   +3 more sources

Large Eddy Simulation and Dynamic Mode Decomposition of Turbulent Mixing Layers

open access: yesApplied Sciences, 2021
Turbulent mixing layers are canonical flow in nature and engineering, and deserve comprehensive studies under various conditions using different methods. In this paper, turbulent mixing layers are investigated using large eddy simulation and dynamic mode
Yuwei Cheng, Qian Chen
doaj   +3 more sources

An Investigation Study on Mode Mixing Separation in Empirical Mode Decomposition

open access: yesIEEE Access, 2019
Mode mixing is a limitation of the empirical mode decomposition (EMD) method appropriate for physiological signal analysis. In 2008, boundary condition map presented by Rilling and Flandrin provided the efficiency of separating the two components of a ...
Han-Ping Huang   +5 more
doaj   +3 more sources

A method for detection of Mode-Mixing problem [PDF]

open access: yesJournal of Applied Statistics, 2021
Atacan Erdis, M Akif Bakir
exaly   +2 more sources

Bearing Fault Diagnosis Method Based on Improved Singular Value Decomposition Package

open access: yesSensors, 2023
The singular value decomposition package (SVDP) is often used for signal decomposition and feature extraction. At present, the general SVDP has insufficient feature extraction ability due to the two-row structure of the Hankel matrix, which leads to mode
Huibin Zhu   +4 more
doaj   +1 more source

Analytic Expressions for Orbital Angular Momentum Modal Crosstalk in a Slightly Elliptical Fiber

open access: yesIEEE Photonics Journal, 2020
Assuming weakly guiding approximation, we examine orbital angular momentum (OAM) mode mixing on account of ellipticity in a fiber and derive a complete set of analytic expressions for spatial crosstalk, using scalar perturbation theory that incorporates ...
Ramesh Bhandari
doaj   +1 more source

Speech emotion recognition based on improved masking EMD and convolutional recurrent neural network

open access: yesFrontiers in Psychology, 2023
Speech emotion recognition (SER) is the key to human-computer emotion interaction. However, the nonlinear characteristics of speech emotion are variable, complex, and subtly changing.
Congshan Sun, Haifeng Li, Lin Ma
doaj   +1 more source

Variational Mode Decomposition for Raman Spectral Denoising

open access: yesMolecules, 2023
As a fast and non-destructive spectroscopic analysis technique, Raman spectroscopy has been widely applied in chemistry. However, noise is usually unavoidable in Raman spectra. Hence, denoising is an important step before Raman spectral analysis. A novel
Xihui Bian   +4 more
doaj   +1 more source

Estimation of Heart Rate and Respiratory Rate from PPG Signal Using Complementary Ensemble Empirical Mode Decomposition with both Independent Component Analysis and Non-Negative Matrix Factorization

open access: yesSensors, 2020
This paper proposes a framework combining the complementary ensemble empirical mode decomposition with both the independent component analysis and the non-negative matrix factorization for estimating both the heart rate and the respiratory rate from the ...
Ruisheng Lei   +3 more
doaj   +1 more source

Mixing material modes

open access: yesSPIE Proceedings, 2012
We present a novel setup in which real objects made of different materials can be mixed optically. For the materials we chose mutually very different materials, which we assume to represent canonical modes. The appearance of 3D objects consisting of any material can be described as linear superposition of 3D objects of different canonical materials, as
Sylvia C. Pont   +4 more
openaire   +4 more sources

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