Results 21 to 30 of about 5,284 (179)

EXPERIMENTAL STUDIES OF BRUSHLESS MAGNETOELECTRIC MOTORS OF THE RETURN-ROTARY MOTION

open access: yesПраці Інституту електродинаміки Національної академії наук України, 2021
The paper describes the structure and mathematical model of a specialized brushless magnetoelectric motor of return-rotary motion. The analysis of the parameters of the mathematical model is carried out and the methods of their ex-perimental ...
V.G. Kireyev   +3 more
doaj   +1 more source

Types of aeroelastic vibrations of turbomachinery bladed discs

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2017
A real process was analyzed for presence of self-oscillations. Absence of self-oscillations was revealed as its attributes such as progressive wave and beating were not discovered.
A. O. Koskin, V. G. Seleznev
doaj   +1 more source

Neutrino oscillograms of the Earth and CP violation in neutrino oscillations

open access: yes, 2009
An analysis of 3-flavour neutrino oscillations inside the Earth is presented in terms of the oscillograms -- contour plots of oscillation probabilities in the plane neutrino energy -- nadir angle.
Akhmedov   +5 more
core   +1 more source

Selkov’s Dynamic System of Fractional Variable Order with Non-Constant Coefficients

open access: yesMathematics
This article uses an approach based on the triad model–algorithm–program. The model is a nonlinear dynamic Selkov system with non-constant coefficients and fractional derivatives of the Gerasimov–Caputo type.
Roman Parovik
doaj   +1 more source

Effects of nonstandard neutrino interactions at PINGU

open access: yes, 2013
Neutrino oscillation experiments in the past decades have greatly improved our knowledge on neutrinos by measuring the fundamental neutrino parameters. The ongoing and upcoming neutrino oscillation experiments are intended to pin down the neutrino mass ...
Ohlsson, Tommy, Zhang, He, Zhou, Shun
core   +1 more source

New Method for Graphical Reproduction of Cathode-Ray Oscillograms [PDF]

open access: yesReview of Scientific Instruments, 1959
An automatic device for tracing the wave form of a repetitive oscilloscope pattern has been developed. The wave form is accurately reproduced and enlarged by a conventional X-Y recorder. Because optical and pulse techniques are used, the system is capable of reproducing signals displayed on even the fastest available oscilloscopes.
Robert K. Swank, Eugene A. Mroz
openaire   +3 more sources

On a Ssystem of Coupled Linear Oscillators with Fractional Friction and Non-Constant Coefficients for Describing Geoacoustic Emission

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki
The paper proposes a generalization of the previously obtained mathematical model of geoacoustic emission, according to which the model takes into account the effects of heredity in dissipative terms.
Sergienko, D.F., Parovik, R.I.
doaj   +1 more source

Determining single-phase earth fault location with applying short-term double earth fault [PDF]

open access: yesE3S Web of Conferences, 2019
The single-phase earth faults location are the predominant type of damage in distribution networks of 6-35 kV. The problem of remotely determining the fault location during single-phase earth faults has not definitely accepted practical and accurate ...
Kulikov A.L.   +2 more
doaj   +1 more source

Neutrino Propagation in Matter [PDF]

open access: yes, 2013
We describe the effects of neutrino propagation in the matter of the Earth relevant for experiments with atmospheric and accelerator neutrinos and aimed at the determination of the neutrino mass hierarchy and CP-violation. These include (i) the resonance
Blennow, Mattias, Smirnov, Alexei Yu.
core   +3 more sources

MATHEMATICAL MODEL OF PROPAGATION OF NERVE IMPULSES WITH REGARD HEREDITARITY [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2017
A mathematical model of the propagation of the nervous pulse of FitzHugh-Nagumo is proposed, which takes into account the effect of heredity. This hereditary model is described by an integro-differential equation with a power kernel — a function of ...
Lipko O. D.
doaj   +1 more source

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