Results 1 to 10 of about 1,144,435 (297)

GROUND BASED SUPPORT OF THE SPACE MISSION PARKER PERFORMED WITH UKRAINIAN LOW FREQUENCY RADIO TELESCOPES [PDF]

open access: yesRadio Physics and Radio Astronomy, 2023
Subject and Purpose. The sporadic radio emissions coming from the Sun in a broad frequency range contain a lot of important information concerning the solar corona, parameters of the radio frequency sources therein, and the parameter variations resulting
V. V. Dorovsky   +2 more
doaj   +1 more source

Rolling stock vibrodynamic impact model on railway pipelines [PDF]

open access: yesE3S Web of Conferences, 2023
The present paper presents the rolling stock vibrodynamic impact model on railway pipelines, obtained on the basis of experimental studies conducted under field conditions at a railway station.
Postnova E.V., Runev E.V.
doaj   +1 more source

On one condition of absolutely continuous spectrum for self-adjoint operators and its applications [PDF]

open access: yesOpuscula Mathematica, 2018
In this work the method of analyzing of the absolutely continuous spectrum for self-adjoint operators is considered. For the analysis it is used an approximation of a self-adjoint operator \(A\) by a sequence of operators \(A_n\) with absolutely ...
Eduard Ianovich
doaj   +1 more source

Semi-empirical Haken–Strobl model for molecular spin qubits

open access: yesNew Journal of Physics, 2023
Understanding the physical processes that determine the relaxation T _1 and dephasing T _2 times of molecular spin qubits is critical for envisioned applications in quantum metrology and information processing.
Katy Aruachan   +3 more
doaj   +1 more source

New Insights into the Lamb Shift: The Spectral Density of the Shift

open access: yesPhysics, 2022
In an atom, the interaction of a bound electron with the vacuum fluctuations of the electromagnetic field leads to complex shifts in the energy levels of the electron, with the real part of the shift corresponding to a shift in the energy level and the ...
G. Jordan Maclay
doaj   +1 more source

Accurate Truncations of Chain Mapping Models for Open Quantum Systems

open access: yesNanomaterials, 2021
The dynamics of open quantum systems are of great interest in many research fields, such as for the interaction of a quantum emitter with the electromagnetic modes of a nanophotonic structure.
Mónica Sánchez-Barquilla   +1 more
doaj   +1 more source

Features of seishe initiation in the water area near Poronaisk (Sakhalin Island) [PDF]

open access: yesГеосистемы переходных зон, 2022
The results of studying potential sources of seiche excitation energy in the water area near Poronaisk (Sakhalin Island) using natural measurement data in 2008–2009 are presented.
Dmitry P. Kovalev   +4 more
doaj   +1 more source

Assessing Granger-Causality in the Southern Humboldt Current Ecosystem Using Cross-Spectral Methods

open access: yesEntropy, 2020
The southern Humboldt Current ecosystem is an important topic among researchers working on the drivers of pelagic species’ biological indicators.
Javier E. Contreras-Reyes   +1 more
doaj   +1 more source

Stochastic modeling of algal bloom dynamics with delayed nutrient recycling

open access: yesMathematical Biosciences and Engineering, 2019
Using the discrete Markov chain, in this paper we develop a stochastic model for algal bloom, in which white noise terms are introduced to describe the e ects of environmental random fluctuations and time delay to account for the time needed in the ...
Xuehui Ji   +3 more
doaj   +1 more source

DETERMINATION OF ELECTROMAGNETIC RADIATION EMITTED BY TELECOMMUNICATION EQUIPMENT OF TRANSMISSION CENTERS

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2013
Determining and forecasting of environmental influence of telecommunication equipment that is a source of electromagnetic radiation is still an actual challenge.
Oleksandr Naumchuk
doaj   +1 more source

Home - About - Disclaimer - Privacy