Results 41 to 50 of about 144,951 (303)
Universal spectral features of different classes of random-diffusivity processes
New Journal of Physics, 2020 Stochastic models based on random diffusivities, such as the diffusing-diffusivity approach, are popular concepts for the description of non-Gaussian diffusion in heterogeneous media.
Vittoria Sposini +4 more
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Generalized two axes model of a squirrel-cage induction motor for rotor fault diagnosis [PDF]
Serbian Journal of Electrical Engineering, 2008 A generalized two axes model of a squirrel-cage induction motor is developed This model is based on a winding function approach and the coupled magnetic circuit theory and takes into account the stator and the rotor asymmetries due to faults.
Samir Hamdani +2 more
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Nonlinear power spectral densities for the harmonic oscillator [PDF]
Annals of Physics, 2015 27 pages, 5 ...
B.D. Hauer, J. Maciejko, J.P. Davis
openaire +2 more sources
E3S Web of Conferences, 2018 The analysis of rough surface morphology plays an important role in the functional characteristics of the contact surface of mechanical parts. Fractal geometry method is more accurate and sensitive than classical statistics model.
Shen Jingfang +3 more
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Monitoring the Depth of Anesthesia Using Discrete Wavelet Transform and Power Spectral Density
, 2009 This method combines wavelet techniques and power spectral density to monitor the depth of anesthesia (DOA) based on simplified EEG signals. After decomposing electroencephalogram (EEG) signals, the power spectral density is chosen as a feature function ...
Wen, Peng +5 more
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Frontiers in Astronomy and Space SciencesTo estimate the effects of magnetic holes on the magnitude of B magnetic power spectral density, a 2-day interval of fast coronal-hole-origin plasma at 1 AU is examined. The magnetic holes are identified and removed from the magnetic time series, and the
Joseph E. Borovsky, Charles W. Smith
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A Subject-Specific Attention Index Based on the Weighted Spectral Power
IEEE Transactions on Neural Systems and Rehabilitation EngineeringAs an essential cognitive function, attention has been widely studied and various indices based on EEG have been proposed for its convenience and easy availability for real-time attention monitoring.
Guiying Xu +6 more
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Theory and assessment of an improved power spectral density estimator [PDF]
, 1990 This thesis is concerned with the processing of time domain signals received by a single sensor. An example of such signals is the radar return, which is used in one way or another to estimate the power spectral density a frequency representation of ...
Ali, Ali Abbas
core
Generalized spectral tests for the martingale difference hypothesis [PDF]
, 2006 This article proposes a test for the martingale difference hypothesis (MDH) using dependence measures related to the characteristic function. The MDH typically has been tested using the sample autocorrelations or in the spectral domain using the ...
Velasco Gómez, Carlos +4 more
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Measuring and Reflecting Depth of Anesthesia Using Wavelet and Power Spectral Density
, 2011 This paper evaluates depth of anesthesia (DoA)monitoring using a new index. The proposed method preconditions raw EEG data using an adaptive threshold technique to remove spikes and low-frequency noise. We also propose an adaptive window length technique
Nguyen-Ky, Tai +7 more
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