Results 21 to 30 of about 44,498 (172)

New achievements on daily reference evapotranspiration forecasting: Potential assessment of multivariate signal decomposition schemes

open access: yesEcological Indicators, 2023
Reference evapotranspiration (ETo) is a vital climate parameter affecting plants' water use. ETo can generate large deficits in soil moisture and runoff in different regions and seasons, leading to uncertainties in drought warning systems.
Mumtaz Ali   +8 more
doaj   +1 more source

Dynamically sampled multivariate empirical mode decomposition [PDF]

open access: yesElectronics Letters, 2015
A method for accurate multivariate local mean estimation in the multivariate empirical mode decomposition algorithm by using a statistical data‐driven approach based on the Menger curvature measure and normal‐to‐anything variate‐generation method is proposed. This is achieved by aligning the projection vectors in the direction of the maximum ‘activity’
Rehman, N   +4 more
openaire   +3 more sources

Multivariate Nonlinear Sparse Mode Decomposition and Its Application in Gear Fault Diagnosis

open access: yesIEEE Access, 2021
Multi-channel signal has more abundant and accurate state characteristic information than single channel signal. How to separate fault characteristic information from the multi-channel signal is the key of fault diagnosis.
Haiyang Pan   +3 more
doaj   +1 more source

MEMD-Based Hybrid Modal Identification for High-Rise Structures with Multi-Sensor Vibration Measurements

open access: yesApplied Sciences, 2022
Although widely used in various fields due to its powerful capability of signal processing, empirical mode decomposition has to decompose signals separately, which limits its application for multivariate data such as the structural monitoring data ...
Mingfeng Huang   +3 more
doaj   +1 more source

Classification of Motor Imagery BCI Using Multivariate Empirical Mode Decomposition [PDF]

open access: yesIEEE Transactions on Neural Systems and Rehabilitation Engineering, 2013
Brain electrical activity recorded via electroencephalogram (EEG) is the most convenient means for brain-computer interface (BCI), and is notoriously noisy. The information of interest is located in well defined frequency bands, and a number of standard frequency estimation algorithms have been used for feature extraction.
Park, Cheolsoo   +4 more
openaire   +3 more sources

Identifying quasi-periodic variability using multivariate empirical mode decomposition: a case of the tropical Pacific [PDF]

open access: yesWeather and Climate Dynamics, 2023
A variety of statistical tools have been used in climate science to gain a better understanding of the climate system's variability on various temporal and spatial scales. However, these tools are mostly linear, stationary, or both. In this study, we use
L. Boljka   +5 more
doaj   +1 more source

Plant-wide oscillation detection using multivariate empirical mode decomposition [PDF]

open access: yesComputers & Chemical Engineering, 2018
Abstract Plant-wide oscillation detection is an important task in the maintenance of large-scale industrial control systems, owing to the fact that in an interactive multi-loop environment oscillation generated in one loop may propagate to the different parts of the plant.
Aftab, Muhammad Faisal   +2 more
openaire   +2 more sources

A Method for Blind Source Separation of Multichannel Electromagnetic Radiation in the Field

open access: yesIEEE Access, 2020
Considering the multichannel instability, spectral overlap and strong interference of electromagnetic radiation signals in the integrated electric propulsion systems of ships, a new method is proposed which combines multivariate empirical mode ...
Sheng Liu, Bangmin Wang, Lanyong Zhang
doaj   +1 more source

Data-driven multivariate and multiscale methods for brain computer interface [PDF]

open access: yes, 2012
This thesis focuses on the development of data-driven multivariate and multiscale methods for brain computer interface (BCI) systems. The electroencephalogram (EEG), the most convenient means to measure neurophysiological activity due to its ...
Park, Cheolsoo, Park, Cheolsoo
core   +1 more source

Assessment of Multifractal Fingerprints of Reference Evapotranspiration Based on Multivariate Empirical Mode Decomposition

open access: yesAtmosphere, 2023
This study analyzed the multifractal characteristics of daily reference evapotranspiration (ETo) time series of the Tabriz and Urmia stations of northwestern Iran and its cross-correlation with five other meteorological variables.
Adarsh Sankaran   +4 more
doaj   +1 more source

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