Results 61 to 70 of about 44,291 (189)

Fault Feature Extraction Method of Gearbox based on Parameter Optimization VMD

Jixie chuandong, 2020
In order to solve the problem that the signal-to-noise ratio of the gearbox fault signal is low and fault feature extraction is difficult，a method for extracting gearbox fault feature based on parameters optimized variational mode decomposition is ...
Ding Chengjun, Fu Xiaoyang, Feng Yubo, Zhang Liang   +3 more
doaj  

Seismic attenuation estimation using multivariate variational mode decomposition

Frontiers in Earth Science, 2022
A seismic attenuation estimation approach is proposed based on multivariate variational mode decomposition (MVMD). MVMD, as a multivariable or multichannel signal processing tool, can extract several predefined multivariable modulation oscillations from ...
Jun-Zhou Liu, Jun-Zhou Liu, Jun-Zhou Liu, Ya-juan Xue, Lei Shi, Lei Shi, Lei Shi, Lei Han, Lei Han, Lei Han   +9 more
doaj   +1 more source

Simulating generic spin-boson models with matrix product states

, 2016
The global coupling of few-level quantum systems ("spins") to a discrete set of bosonic modes is a key ingredient for many applications in quantum science, including large-scale entanglement generation, quantum simulation of the dynamics of long-range ...
Rey, Ana Maria, Safavi-Naini, Arghavan, Wall, Michael L.   +2 more
core   +1 more source

Localization and Coherent Structures in Wave Dynamics via Multiresolution [PDF]

, 2002
We apply variational-wavelet approach for constructing multiscale high-localized eigenmodes expansions in different models of nonlinear waves. We demonstrate appearance of coherent localized structures and stable pattern formation in different collective
Fedorova, Antonina N., Zeitlin, Michael G.   +1 more
core   +2 more sources

Invariant measures of the 2D Euler and Vlasov equations [PDF]

, 2010
We discuss invariant measures of partial differential equations such as the 2D Euler or Vlasov equations. For the 2D Euler equations, starting from the Liouville theorem, valid for N-dimensional approximations of the dynamics, we define the ...
Chavanis P H, Chavanis P H Campa A Giansanti A Morigi G Labini F S, Courant R, Dauxois T, Eyink G, Freddy Bouchet, Holm D D Marsden J E Ratiu T S, Kiessling M K-H Campa A Giansanti A Morigi G Labini F S, Kraichnan R H, Lee T D, Lynden-Bell D, Marianne Corvellec, Mattingly J C Sinai Y G, Mouhot C Villani C, Robert R, Rockafellar R T, Salmon R, Spohn H   +17 more
core   +3 more sources

A Source Localization Method Using Complex Variational Mode Decomposition

Sensors, 2022
Source localization with a passive sensors array is a common topic in various areas. Among the popular source localization algorithms, the compressive sensing (CS)-based method has recently drawn considerable interest because it is a high-resolution method, robust with coherent sources and few snapshots, and applicable for mixed near-field and far ...
Qiuyan Miao, Xinglin Sun, Bin Wu, Lingyun Ye, Kaichen Song   +4 more
openaire   +3 more sources

Non-intrusive load identification method based on VMD and PSO-SVM

Diance yu yibiao
Non-intrusive load monitoring is one of the important technologies of intelligent power consumption, among which load decomposition and identification is an important link to realize the technology.
YANG Rui, ZOU Xiaosong, XIONG Wei, YUAN Xufeng, ZHENG Huajun, LIU Bin   +5 more
doaj   +1 more source

The catalytic role of beta effect in barotropization processes [PDF]

, 2012
The vertical structure of freely evolving, continuously stratified, quasi-geostrophic flow is investigated. We predict the final state organization, and in particular its vertical structure, using statistical mechanics and these predictions are tested ...
Griffies, S. M., Vallis, Geoffrey K., Venaille, Antoine   +2 more
core   +3 more sources

A Sequential Variational Mode Decomposition Method

, 2021
In this paper, we introduce a sequential variational mode decomposition method to separate non-stationary mixed signals successively. This method is inspired by the variational method, and can precisely recover the original components one by one from the raw mixture without prior knowing or assuming the number of components. And in such a way, the mode
openaire   +2 more sources

Fermions on an Interval: Quark and Lepton Masses without a Higgs

, 2003
We consider fermions on an extra dimensional interval. We find the boundary conditions at the ends of the interval that are consistent with the variational principle, and explain which ones arise in various physical circumstances.
A. Pomarol, A. Pomarol, B. Holdom, B. Holdom, C. Csáki, C. Csáki, C. Csáki, C. Csáki, C.A. Scrucca, Christophe Grojean, Csaba Csáki, D.B. Kaplan, D.E. Kaplan, D.T. Son, G. Burdman, G. Hiller, G. Hiller, H. Davoudiasl, H. Davoudiasl, H. Davoudiasl, I. Gogoladze, I. Gogoladze, J. Bagger, J. Bagger, J.A. Bagger, J.L. Hewett, Jay Hubisz, John Terning, K. Agashe, K. Yamawaki, L. Randall, L. Randall, L. Randall, L. Randall, M. Carena, M. Carena, M.E. Shaposhnikov, N. Arkani-Hamed, R. Barbieri, R. Rattazzi, R.S. Chivukula, R.S. Chivukula, R.S. Chivukula, S. Chang, S. De Curtis, S. De Curtis, S.J. Huber, S.J. Huber, S.J. Huber, S.J. Huber, S.J. Huber, S.J. Huber, T. Appelquist, T. Appelquist, T. Appelquist, T. Gherghetta, Y. Abe, Y. Grossman, Y. Nomura, Y. Nomura, Yuri Shirman   +60 more
core   +1 more source