Results 21 to 30 of about 19,536,545 (322)

Measurement of the dipole in the cross-correlation function of galaxies [PDF]

open access: yes, 2015
It is usually assumed that in the linear regime the two-point correlation function of galaxies contains only a monopole, quadrupole and hexadecapole. Looking at cross-correlations between different populations of galaxies, this turns out not to be the ...
E. Gaztañaga, C. Bonvin, L. Hui
semanticscholar   +1 more source

СREATION OF CORRELATION FUNCTIONS OF LINEAR CONTINUOUS SYSTEMS BASED ON THEIR FUNDAMENTAL MATRICES [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2015
The paper presents a method of creating correlation matrices and functions of the state vectors and outputs of the linear continuous systems functioning under the conditions of stochastic stationary, in a broad sense, effects.
N. A. Vunder   +3 more
doaj   +1 more source

First-order correlation function of a stream of single-electron wave packets [PDF]

open access: yes, 2015
The first-order correlation function, which is accessible experimentally, contains all essential information about the state of the system of non-interacting electrons. Here I discuss how this function can be used to answer the question whether the state
Mykhailo Moskalets
semanticscholar   +1 more source

USE OF TRIANGULAR MODELS OF NON-STATIONARY PROCESSES IN MODELING VARIABILITY OF HEART RHYTHM

open access: yesСучасний стан наукових досліджень та технологій в промисловості, 2019
The subject matter is a mathematical model describing the process of heart rhythm variability, which is based on the use of triangular models of non-stationary random processes in the Hilbert space.
Olena Akhiiezer   +4 more
doaj   +1 more source

Incoherent Neutron Scattering and Terahertz Time-Domain Spectroscopy on Protein and Hydration Water

open access: yesLife, 2023
Incoherent inelastic and quasi-elastic neutron scattering (INS) and terahertz time-domain spectroscopy (THz-TDS) are spectroscopy methods that directly detect molecular dynamics, with an overlap in the measured energy regions of each method.
Hiroshi Nakagawa, Naoki Yamamoto
doaj   +1 more source

Effective second-order correlation function and single-photon detection

open access: yesNew Journal of Physics, 2017
Quantum-optical research on semiconductor single-photon sources puts special emphasis on the measurement of the second-order correlation function g(2)(τ), arguing that g(2)(0) < 1/2 implies the source field represents a good single-photon light source ...
Peter Grünwald
semanticscholar   +1 more source

ANALYTICAL MODEL OF A DIFFERENTIAL METHOD FOR RECEIVING AND PROCESSING SIGNALS OF THE INFRARED RANGE OF WAVELENGTHS

open access: yesНаучный вестник МГТУ ГА, 2017
One of the classic methods to improve the noise immunity of passive detection of infrared wavelength range (IKSO) is a differential inclusion of pyrocatechol, placed at some distance.
N. S. Akinshin   +2 more
doaj   +1 more source

An Innovative Structural Dynamic Identification Procedure Combining Time Domain OMA Technique and GA

open access: yesBuildings, 2022
In this paper an innovative and simple Operational Modal Analysis (OMA) method for structural dynamic identification is proposed. It combines the recently introduced Time Domain–Analytical Signal Method (TD–ASM) with the Genetic Algorithm (GA ...
Salvatore Russotto   +2 more
doaj   +1 more source

Modeling of Some Thermodynamic Properties of UF6 at Low Pressure Using Correlation Function [PDF]

open access: yesJournal of Nuclear Research and Applications, 2021
The properties of uranium hexafluoride (UF6) are of importance to the nuclear industry as a precursor for the enrichment. Therefore it is of importance to obtain the most accurate properties for such a strategic compound.
Mohsen Najafi
doaj   +1 more source

Fluctuation, time-correlation function and geometric Phase [PDF]

open access: yes, 1998
We establish a fluctuation-correlation theorem by relating the quantum fluctuations in the generator of the parameter change to the time integral of the quantum correlation function between the projection operator and force operator of the ``fast ...
A. Mostafazadeh   +26 more
core   +3 more sources

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