Results 11 to 20 of about 30,371 (174)

2-D Prony-Huang Transform: A New Tool for 2-D Spectral Analysis [PDF]

, 2014
This work proposes an extension of the 1-D Hilbert Huang transform for the analysis of images. The proposed method consists in (i) adaptively decomposing an image into oscillating parts called intrinsic mode functions (IMFs) using a mode decomposition ...
Borgnat, Pierre, Condat, Laurent, Flandrin, Patrick, Pustelnik, Nelly, Schmitt, Jérémy   +4 more
core   +2 more sources

Small Amplitude Hunting Instability of High-speed Train Diagnosis Method Based on Modified Ensemble Empirical Mode Decomposition, Shannon Entropy and Least Square Support Vector Machine

Proceedings of the 2016 4th International Conference on Mechanical Materials and Manufacturing Engineering, 2016
To monitor the state of small hunting instability for the train at a high speed, aiming at the problem of mode splitting of ensemble empirical mode decomposition (EEMD), a new methodology which combines modified ensemble empirical mode decomposition (MEEMD), Shannon entropy feature and least squares support vector machine (LSSVM) is presented in this ...
Jing Ning, Yunguang Ye
openaire   +1 more source

Multifractal characteristics of external anal sphincter based on sEMG signals

, 2017
This work presents the application of Multifractal Detrended Fluctuation Analysis for the surface electromyography signals obtained from the patients suffering from rectal cancer.
Machura, Lukasz, Nowakowski, Michal, Trybek, Paulina   +2 more
core   +1 more source

Low-dimensional models for turbulent plane Couette flow in a minimal flow unit [PDF]

, 2005
We model turbulent plane Couette flow in the minimal flow unit (MFU) – a domain whose spanwise and streamwise extent is just sufficient to maintain turbulence – by expanding the velocity field as a sum of optimal modes calculated via proper orthogonal ...
Holmes, P., Moehlis, J., Smith, T. R.
core   +1 more source

Multilevel ensemble Kalman filtering for spatio-temporal processes

, 2020
We design and analyse the performance of a multilevel ensemble Kalman filter method (MLEnKF) for filtering settings where the underlying state-space model is an infinite-dimensional spatio-temporal process.
Chernov, Alexey, Hoel, Håkon, Law, Kody J. H., Nobile, Fabio, Tempone, Raul   +4 more
core   +1 more source

Kepler Mission Stellar and Instrument Noise Properties [PDF]

, 2011
Kepler Mission results are rapidly contributing to fundamentally new discoveries in both the exoplanet and asteroseismology fields. The data returned from Kepler are unique in terms of the number of stars observed, precision of photometry for time series
Andrea Miglio, Batalha, Batalha, Borucki, Brown, Bryson, Caldwell, Cardini, Chaplin, Christensen-Dalsgaard, Christiansen, Ciardi, Cutri, David G. Koch, Derek L. Buzasi, Douglas A. Caldwell, Edward W. Dunham, Gibor Basri, Gilliland, Gilliland, Gilliland, Gilliland, Gould, Haas, Hall, Harvey, Ida, Jeffrey Kolodziejczak, Jeffrey van Cleve, Jenkins, Jenkins, Jenkins, Jon M. Jenkins, Karoff, Kjeldsen, Koch, Kolodziejczak, Lockwood, Lucianne M. Walkowicz, Mamajek, Metcalfe, Osmer, Perryman, Press, Radick, Ronald L. Gilliland, Schlegel, Stephen T. Bryson, van Cleve, Vic S. Argabright, Welsh, William F. Welsh, William J. Borucki, William J. Chaplin, Yvonne P. Elsworth   +54 more
core   +2 more sources

Gearbox fault diagnosis under different operating conditions based on time synchronous average and ensemble empirical mode decomposition [PDF]

, 2009
In this paper, a new method is proposed by combining ensemble empirical mode decomposition (EEMD) with order tracking techniques to analyse the vibration signals from a two stage helical gearbox.
Ball, A, Fazenda, BM, Gu, F, Guan, L, Shao, Y   +4 more
core  

Guide to Spectral Proper Orthogonal Decomposition [PDF]

, 2020
This paper discusses the spectral proper orthogonal decomposition and its use in identifying modes, or structures, in flow data. A specific algorithm based on estimating the cross-spectral density tensor with Welch’s method is presented, and guidance is ...
Colonius, Tim, Schmidt, Oliver T.
core  

Stochastic representation of the Reynolds transport theorem: revisiting large-scale modeling [PDF]

, 2016
We explore the potential of a formulation of the Navier-Stokes equations incorporating a random description of the small-scale velocity component.
Harouna, S. Kadri, Mémin, E.
core   +5 more sources

Integrative Approaches for DNA Sequence‐Controlled Functional Materials

Advanced Functional Materials, EarlyView.
DNA is emerging as a programmable building block for functional materials with applications in biomimicry, biochemical, and mechanical information processing. The integration of simulations, experiments, and machine learning is explored as a means to bridge DNA sequences with macroscopic material properties, highlighting current advances and providing ...
Aaron Gadzekpo, Ewa Anna Oprzeska‐Zingrebe, Mariana Kozlowska, Lennart Hilbert, Iliya D. Stoev   +4 more
wiley   +1 more source