Results 131 to 140 of about 8,162,811 (252)
The output autocorrelation function and power spectral density of a diode frequency converter [PDF]
, 1966 Output autocorrelation function and power spectral density of diode frequency ...
Ippolito, L. J.
core
Plot of the mean power spectral density for each of the episodes used in this study.
, 2016 Plot of the mean power spectral density for each of the episodes used in this study.
Lucas C. Parra (266691) +3 more
core +1 more source
Combined method of spectral estimation when receiving of superpermissions on frequency
Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019 Evaluating of the power spectral density (SPM) of signal are usually performed through procedures using classical methods spectral analysis based on the discrete Fourier transform.
V. A. Kakora, A. V. Grinkevich
doaj
Advanced Engineering Materials, EarlyView.A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora +4 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios +5 more
wiley +1 more source
Edgeworth Expansions for Spectral Density Estimates and Studentized Sample Mean - (Now published in Economic Theory, 17 (2001), pp.497-539. [PDF]
We establish valid Edgeworth expansions for the distribution of smoothed nonparametric spectral estimates, and of studentized versions of linear statistics such as the same mean, where the studentization employs such a nonparametric spectral estimate ...
Carlos Velasco, Peter M Robinson
core
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich +3 more
wiley +1 more source
Estimation of direct and cross power spectral density of discrete data using the fast Fourier transform [PDF]
, 1969 Direct and cross power spectral density estimation of discrete data using fast Fourier transform with digital filter ...
Jolly, A. C.
core
Nonlinear distortion analysis for multisine excitation constrained by power spectral density
Journal of Measurement Science and Instrumentation, 2016 Nonlinear distortion introduced by an amplifier when subjected to a multisine excitation decreases the measurement accuracy in many metrological and measurement areas.In this paper,we performed qualitative and quantitative analyses of the nonlinear ...
ZHOU Kun-li, QU Ji-feng, ZHOU Zhen-yu
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