Results 31 to 40 of about 26,466 (149)

Rolling Bearing Fault Diagnosis Based on WGWOA-VMD-SVM

Sensors, 2022
A rolling bearing fault diagnosis method based on whale gray wolf optimization algorithm-variational mode decomposition-support vector machine (WGWOA-VMD-SVM) was proposed to solve the unclear fault characterization of rolling bearing vibration signal ...
Junbo Zhou, Maohua Xiao, Yue Niu, Guojun Ji   +3 more
doaj   +1 more source

Application of a hybrid model based on GA–ELMAN neural networks and VMD double processing in water level prediction

Journal of Hydroinformatics, 2022
Accurate water level prediction is of great importance for water infrastructures such as dams, embankments, and agriculture. However, the water level has nonlinear characteristics, which make it very challenging to accurately predict the water level ...
Wen Yan Xing, Yu Long Bai, Lin Ding, Qing He Yu, Wei Song   +4 more
doaj   +1 more source

Daily lake-level time series spectral analysis using EMD, VMD, EWT, and EFD

Journal of Water and Climate Change
This study investigates the dynamics of daily Urmia Lake level (ULL) changes using spectral analysis tools to discover fluctuating patterns in the ULL series.
Farhad Alizadeh, Kiyoumars Roushangar
doaj   +1 more source

Machine Learning Models Coupled with Variational Mode Decomposition: A New Approach for Modeling Daily Rainfall-Runoff

Atmosphere, 2018
Accurate modeling for nonlinear and nonstationary rainfall-runoff processes is essential for performing hydrologic practices effectively. This paper proposes two hybrid machine learning models (MLMs) coupled with variational mode decomposition (VMD) to ...
Youngmin Seo, Sungwon Kim, Vijay P. Singh   +2 more
doaj   +1 more source

Optimization method for remaining life prediction of conventional circuit breaker based on deep learning

Diance yu yibiao
In the context of smart grid, aiming at the condition monitoring of conventional circuit breakers with complex mechanical actions, an optimization method for remaining life prediction of conventional circuit breaker based on deep learning is proposed ...
SUN Shuguang, WEI Shuo, WANG Jingqin, SHAO Xu, SUN Liang, GAO Hui   +5 more
doaj   +1 more source

Non-prescription dispensing of veterinary medicines for treating mastitis in dairy cattle among non-veterinary personnel in selected districts of Zambia

Frontiers in Veterinary Science
ObjectivesVeterinary antibiotics are vital for managing bacterial infections in animals and preventing zoonotic transmission through animal-derived foods, direct contact, or the environment.
Amon Bwalya, Ethel M’kandawire, Alison Pyatt, Alison Pyatt, Catrina Prince, Catrina Prince, Claire Gilbert, Claire Gilbert, John Bwalya Muma, Steward Mudenda, Steward Mudenda   +10 more
doaj   +1 more source

VMD Documentation

, 2018
In this documentation, the basic and intermediate documentation of VMD molecular dynamics visualization software from University of Illinois at Urbana-Champaign are provided. This documentation includes user guide for opening and loading molecular structure files, change drawing options of molecular structures like CPK, tube, ribbon and etc., change ...
openaire   +1 more source

Short-Term Water Demand Forecasting Model Combining Variational Mode Decomposition and Extreme Learning Machine

Hydrology, 2018
Accurate water demand forecasting is essential to operate urban water supply facilities efficiently and ensure water demands for urban residents. This study proposes an extreme learning machine (ELM) coupled with variational mode decomposition (VMD) for ...
Youngmin Seo, Soonmyeong Kwon, Yunyoung Choi   +2 more
doaj   +1 more source

GMPSO-VMD Algorithm and Its Application to Rolling Bearing Fault Feature Extraction

Sensors, 2020
The vibration signal of an early rolling bearing is nonstationary and nonlinear, and the fault signal is weak and difficult to extract. To address this problem, this paper proposes a genetic mutation particle swarm optimization variational mode ...
Jiakai Ding, Liangpei Huang, Dongming Xiao, Xuejun Li   +3 more
doaj   +1 more source

To VMD, or not to VMD, in the quark-gluon plasma

, 1995
I review results on the shift of the $ $ meson mass at nonzero temperature in a gauged linear sigma model, under the assumption of strict vector meson dominance. (Based upon a talk presented at the International Workshop on "Chiral Dynamics in Hadrons and Nuclei", Seoul, Korea, Feb., 1995).
openaire   +2 more sources