Results 61 to 70 of about 1,897,301 (192)

Spectral analysis of electron transfer kinetics II

open access: yes, 2002
Electron transfer processes in Debye solvents are studied using a spectral analysis method recently proposed. Spectral structure of a nonadiabatic two-state diffusion equation is investigated to reveal various kinetic regimes characterized by a broad ...
Alexandrov I. V.   +2 more
core   +1 more source

Power spectral density analysis [PDF]

open access: yes
Equations for power spectral density function, and for root mean square of power spectral density ...
Hayes, C. D.
core   +1 more source

Data analysis techniques: Spectral processing [PDF]

open access: yes, 1983
The individual steps in the data processing scheme applied to most radars used for wind sounding are analyzed. This processing method uses spectral analysis and assumes a pulse Doppler radar.
Strauch, R. G.
core   +1 more source

Image depth estimation assisted by multi-view projection

open access: yesComplex & Intelligent Systems
In recent years, deep learning has significantly advanced the development of image depth estimation algorithms. The depth estimation network with single-view input can only extract features from a single 2D image, often neglecting the information ...
Liman Liu   +6 more
doaj   +1 more source

Spectral Analysis Implies Spectral Synthesis

open access: yesMathematics
In this paper we show that spectral analysis implies spectral synthesis for arbitrary varieties on locally compact Abelian groups that have no discrete subgroups of an infinite torsion-free rank.
László Székelyhidi
doaj   +1 more source

Visible spectroscopy of the new ESO Large Program on trans-Neptunian objects and Centaurs: final results

open access: yes, 2009
A second large programme (LP) for the physical studies of TNOs and Centaurs, started at ESO Cerro Paranal on October 2006 to obtain high-quality data, has recently been concluded.
A. Alvarez-Candal   +49 more
core   +4 more sources

LOCAL FITS OF SIGNALS WITH ASYMPTOTIC BRANCHES

open access: yesOdessa Astronomical Publications, 2017
The method of "asymptotic parabola" fit is described, its analytical properties are discussed in comparison with other types of fits. The method is effective for the (possibly highly asymmetric) signals with practically linear ascending and descending ...
V. I. Marsakova, I. L. Andronov
doaj   +1 more source

Spectral analysis of stationary random bivariate signals

open access: yes, 2017
A novel approach towards the spectral analysis of stationary random bivariate signals is proposed. Using the Quaternion Fourier Transform, we introduce a quaternion-valued spectral representation of random bivariate signals seen as complex-valued ...
Bihan, Nicolas Le   +2 more
core   +3 more sources

Study on defect type in eddy-current testing based on phase spectrum analysis

open access: yesThe Journal of Engineering, 2019
This article proposes the use of phase angle gradient as a feature to detect and classify different types of defects. Based on the principle of eddy-current testing (ECT), the ECT platform was designed and manufactured.
Ronghua Zhang, Song Ye
doaj   +1 more source

Cardiovascular Autonomic Profile in Women With Premenstrual Syndrome

open access: yesFrontiers in Physiology, 2018
Introduction: The premenstrual syndrome (PMS) is a constellation of somatic and psychogenic symptoms that appear during late luteal (LL) phase of the menstrual cycle.
Rimma Koifman   +3 more
doaj   +1 more source

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