Results 1 to 10 of about 69,208 (361)

Use of Composite Multivariate Multiscale Permutation Fuzzy Entropy to Diagnose the Faults of Rolling Bearing

Entropy, 2023
The study focuses on the fault signals of rolling bearings, which are characterized by nonlinearity, periodic impact, and low signal-to-noise ratio.
Qiang Yuan, Mingchen Lv, Ruiping Zhou, Hong Liu, Chongkun Liang, Lijiao Cheng   +5 more
doaj   +1 more source

Efficient Calculation of Multi-Scale Features for MMS Point Clouds [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Point clouds acquired by Mobile Mapping System (MMS) are useful for creating 3D maps that can be used for autonomous driving and infrastructure development.
K. Hiraoka, G. Takahashi, H. Masuda
doaj   +1 more source

Discrete Element Method for Multiscale Modelling

, 2020
A discrete element method (DEM) has been developed to provide highly accurate and detailed predictions of the Lagrangian particle phase. Especially in this study, DEM has been used together with an Eulerian approach for the fluid phase to look at ...
Luo, KH, van Wachem, BGM, Bruchmüller, J, Gu, S   +3 more
core   +1 more source

Measuring center of pressure signals to quantify human balance using multivariate multiscale entropy by designing a force platform [PDF]

, 2013
Copyright © 2013 by the authors. To assess the improvement of human body balance, a low cost and portable measuring device of center of pressure (COP), known as center of pressure and complexity monitoring system (CPCMS), has been developed for data ...
Huang, C-W, Jiang, BC, Shieh, J-S, Sue, PD, Maysam F. Abbod, Bernard Jiang, Jiann-Shing Shieh, Huang, CW, Maysam Abbod, Pei-Der Sue, Shieh, JS, Abbod, MF, Bernard C. Jiang, Cheng-Wei Huang, Sue, P-D   +14 more
core   +1 more source

Numerical Assessment of Effective Elastic Properties of Needled Carbon/Carbon Composites Based on a Multiscale Method

C
Needled carbon/carbon composites contain complex microstructures such as irregular pores, anisotropic pyrolytic carbon, and interphases between fibers and pyrolytic carbon matrices.
Jian Ge, Xujiang Chao, Haoteng Hu, Wenlong Tian, Weiqi Li, Lehua Qi   +5 more
doaj   +1 more source

Multiscale water diffusivity prediction of plain woven composites considering void defects

Science and Engineering of Composite Materials
To reveal the effects of void defects on the diffusivities of plain woven composites, a multiscale analysis framework considering the microscale and mesoscale voids is developed in this study.
Wang Meng
doaj   +1 more source

Particle-based hybrid and multiscale methods for nonequilibrium gas flows

Advances in Aerodynamics, 2019
Over the past half century, a variety of computational fluid dynamics (CFD) methods and the direct simulation Monte Carlo (DSMC) method have been widely and successfully applied to the simulation of gas flows for the continuum and rarefied regime ...
Jun Zhang, Benzi John, Marcel Pfeiffer, Fei Fei, Dongsheng Wen   +4 more
doaj   +1 more source

Multiscale expansion and integrability properties of the lattice potential KdV equation

, 2008
We apply the discrete multiscale expansion to the Lax pair and to the first few symmetries of the lattice potential Korteweg-de Vries equation. From these calculations we show that, like the lowest order secularity conditions give a nonlinear Schrödinger
Decio Levi, Petrera, Matteo, Matteo Petrera, Scimiterna, Christian, Heredero RH, Petrera M, Levi, Decio, Rafael Hernandez Heredero, Scimiterna C., Hernández Heredero, Rafael, Christian Scimiterna   +10 more
core   +1 more source

Cosmological Non-Gaussian Signature Detection: Comparing Performance of Different Statistical Tests

EURASIP Journal on Advances in Signal Processing, 2005
Currently, it appears that the best method for non-Gaussianity detection in the cosmic microwave background (CMB) consists in calculating the kurtosis of the wavelet coefficients.
Starck J-L, Aghanim N, Forni O, Donoho DL, Jin J   +4 more
doaj   +1 more source

RBF-Based Multiscale Control Volume Method for Second Order Elliptic Problems with Oscillatory Coefficients [PDF]

, 2012
Many important engineering problems have multiple-scale solutions. Thermal conductivity of composite materials, flow in porous media, and turbulent transport in high Reynolds number flows are examples of this type.
Mai-Duy, N., C.-D. Tran, N. Mai-Duy, T. Tran-Cong, An-Vo, D.-A., Tran-Cong, T., Tran, C.-D., D.-A. An-Vo   +7 more
core   +1 more source