Results 51 to 60 of about 34,434 (155)

Localization and Pattern Formation in BBGKY Hierarchy

open access: yes, 2005
A fast and efficient numerical-analytical approach is proposed for modeling complex behaviour in the BBGKY hierarchy of kinetic equations. Numerical modeling shows the creation of various internal structures from localized modes, which are related to the
Fedorova, Antonina N.   +1 more
core   +1 more source

Fault Diagnosis of Rolling Bearings Based on Acoustic Signals in Strong Noise Environments

open access: yesApplied Sciences
Compared to vibration sensors, microphones offer several advantages, including non-contact detection, high sensitivity, low cost, and ease of installation.
Hengdi Wang, Jizhan Xie
doaj   +1 more source

Theory of disordered flux-line liquids

open access: yes, 2005
We study the equilibrium statics and nonequilibrium driven dynamics of flux line liquids in presence of a random pinning potential. Under the assumption of replica symmetry, we find in the static case using a replica Gaussian variational method that the ...
A. M. Ettouhami   +10 more
core   +1 more source

Short-term prediction of trimaran load based on data driven technology

open access: yesBrodogradnja
Due to the complex flow interference by side hulls, load prediction has been one of the obstacles to achieve structural health monitoring and intelligent navigation of trimarans.
Haoyun Tang   +3 more
doaj   +1 more source

A Hybrid Method for Life Prediction of Railway Relays Based on Multi-Layer Decomposition and RBFNN

open access: yesIEEE Access, 2019
The railway relay plays an important role in railway systems. Its reliability has a significant effect on the safety of passengers and train operation, which can be reflected using degradation parameters. In this paper, a novel hybrid method based on the
Yongkui Sun   +5 more
doaj   +1 more source

A VMD-Based Four-Stage Hybrid Forecasting Model with Error Correction for Complex Coal Price Series

open access: yesMathematics
This study proposes a four-module “decomposition–forecasting–ensemble–correction” framework to improve the accuracy of complex coal price forecasts. The framework combines Variational Mode Decomposition (VMD), adaptive Autoregressive Integrated Moving ...
Qing Qin, Lingxiao Li
doaj   +1 more source

Accurate Radar-Based Heartbeat Measurement Using Higher Harmonic Components

open access: yesIEEE Access
This study proposes a radar-based heartbeat measurement method that uses the absolute value of the second derivative of the complex radar signal, rather than its phase, in combination with the variational mode extraction method, which is a type of mode ...
Itsuki Iwata   +3 more
doaj   +1 more source

Automated Categorization of Multi-Class Brain Abnormalities Using Decomposition Techniques With MRI Images: A Comparative Study

open access: yesIEEE Access, 2019
Medical imaging and analysis are useful to visualize anatomic structure. However, analysis of the pathologic substrate is difficult and inefficient when using simple imaging tools.
Anjan Gudigar   +5 more
doaj   +1 more source

Consistent Dynamic Mode Decomposition

open access: yes, 2019
We propose a new method for computing Dynamic Mode Decomposition (DMD) evolution matrices, which we use to analyze dynamical systems. Unlike the majority of existing methods, our approach is based on a variational formulation consisting of data alignment
Azencot, Omri   +2 more
core  

Enhancing agricultural sustainability: Time series forecasting with ICEEMDAN-VMD-GRU for economic-resilience

open access: yesResults in Engineering
In this study, we offer a dual-decomposition hybrid time series forecasting model that combines improved complete ensemble empirical mode decomposition with adaptive noise (ICEEMDAN) and variational mode decomposition (VMD) with gated recurrent unit (GRU)
Aastha M. Sathe   +2 more
doaj   +1 more source

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