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ИССЛЕДОВАНИЕ ОСЕСИММЕТРИЧНЫХ НЕСТАЦИОНАРНЫХ КОЛЕБАНИЙ ЭЛЕКТРОМАГНИТОУПРУГОЙ ТОЛСТОСТЕННОЙ СФЕРИЧЕСКОЙ ОБОЛОЧКИ С ИСПОЛЬЗОВАНИЕМ ЧИСЛЕННОГО ОБРАЩЕНИЯ ПРЕОБРАЗОВАНИЯ ЛАПЛАСА
С. 67–69.
Malashkin A. V., Тарлаковский Д. В., Вестяк В. А., Терлецкий Р. Ф.
Numerical simulation of the oscillation thick walled shell electromagnetoelasticity
Ruderman M. S., N. S. Petrukhin, Monthly Notices of the Royal Astronomical Society 2026 Vol. 549 No. 4 Article stag783
For the first time we study kink oscillations of braided coronal magnetic loops. We use the simplest model of a braided loop that consists just of two identical curved magnetic tubes. It is assumed that the plasma density is constant inside the tubes, and also in the surrounding plasma. To describe the kink oscillations we ...
Added: July 12, 2026
Dogonasheva O., Giraud A., Zakharov D. et al., Neural Networks 2025 Vol. 195 Article 108194
In this review, we examine computational models that explore the role of neural oscillations in speech perception, spanning from early auditory processing to higher cognitive stages. We focus on models that use rhythmic brain activities, such as gamma, theta, and delta oscillations, to encode phonemes, segment speech into syllables and words, and integrate linguistic elements ...
Added: October 16, 2025
Ruderman M. S., Petrukhin N., Monthly Notices of the Royal Astronomical Society 2024 Vol. 528 No. 3 P. 4829–4837
We study kink oscillations of the system of two parallel magnetic tubes in the presence of plasma cooling. We assume that the characteristic cooling time is much larger than the characteristic time of kink oscillations. Using the ratio of two characteristic times as a small parameter, we derive the expression for the adiabatic invariant, which ...
Added: February 14, 2024
Ruderman M. S., N. S. Petrukhin, Solar Physics 2023 Vol. 298 Article 125
We study kink and fluting waves in expanding and twisted magnetic flux tubes. We use the
thin-tube and zero-beta plasma approximations. The equilibrium magnetic field is force free
with a constant proportionality coefficient between the electrical current and the magnetic
field. We derive the equation governing the kink and fluting waves in a tube. Using this
equation we study ...
Added: December 3, 2023
Ruderman M. S., N. S. Petrukhin, Monthly Notices of the Royal Astronomical Society 2023 Vol. 523 No. 2 P. 2074–2082
We study oscillations of two parallel interacting magnetic tubes in the presence of plasma flow along the tubes. Using the cold plasma and thin tube approximations we derive the system of two equations describing these oscillations. This system of equations is valid for equilibria where the plasma density and flow velocity can vary along the ...
Added: July 26, 2023
Ruderman M. S., Petrukhin N., Solar Physics 2022 Vol. 297 No. 9 Article 116
We study the excitation of fluting perturbations in a magnetic tube by an initially imposed
kink mode. We use the ideal magnetohydrodynamic (MHD) equations in the cold-plasma
approximation. We also use the thin-tube approximation and scale the dependent and independent variables accordingly. Then we assume that the dimensionless amplitude of the kink
mode is small and use it ...
Added: September 13, 2022
Ruderman M. S., Petrukhin N., Solar Physics 2022 Vol. 297 No. 6 Article 72
In this article we study the effect of a transitional layer in a magnetic tube on the real part
of the frequencies of kink oscillations. In our analysis, we use the model of a straight magnetic tube with the density and cross-section radius varying along the loop, and the thin-tube
thin-boundary (TTTB) approximation. First, we calculate the ...
Added: July 11, 2022
Klinshov V., Кириллов С. Ю., Некоркин В. И., Chaos 2021 Vol. 30 No. 5 P. 051101-1–051101-8
We study a heterogeneous population consisting of two groups of oscillatory elements, one with attractive and one with repulsive coupling. Moreover, we set different internal timescales for the oscillators of the two groups and concentrate on the role of this timescale separation in the collective behavior. Our results demonstrate that it may significantly modify synchronization ...
Added: March 16, 2022
Ruderman M. S., Petrukhin N., Pelinovsky E., Solar Physics 2021 Vol. 296 Article 124
In this article we study the plasma motion in the transitional layer of a coronal loop randomly
driven at one of its footpoints in the thin-tube and thin-boundary-layer (TTTB) approximation. We introduce the average of the square of a random function with respect to time. This
average can be considered as the square of the oscillation amplitude ...
Added: August 18, 2021
Petrukhin N., Ruderman M. S., Monthly Notices of the Royal Astronomical Society 2021 Vol. 501 P. 3017–3029
We study kink oscillations of a straight magnetic tube with a transitional region at its boundary. The tube is homogeneous in the axial direction. The plasma density monotonically decreases in the transitional region from its value inside the tube to that in the surrounding plasma. The plasma motion is described by the linear magnetohydrodynamic equations ...
Added: January 23, 2021
Kenville R., Maudrich T., Vidaurre C. et al., Journal of Neurophysiology 2020 Vol. 124 No. 4 P. 1045–1055
Coordination of functionally coupled muscles is a key aspect of movement execution. Demands on coordinative control increase with the number of involved muscles and joints, as well as with differing movement periods within a given motor sequence. While previous research has provided evidence concerning inter- and intramuscular synchrony in isolated movements, compound movements remain largely ...
Added: November 16, 2020
Извекова Ю. Н., Popel S., Извеков О. Я., Физика плазмы 2020 Т. 46 № 1 С. 72–77
The possibility of excitation of oscillations in a Schumann resonator in the atmosphere of Mars is discussed. On Earth, the main source of energy in the resonator cavity are thunderstorms at tropical latitudes. On Mars, electric phenomena are possible during dust events such as dust columns and dust storms. The charging of dust grains in a dust column ...
Added: April 3, 2020
Zhozhikashvili N., Nurislamova Y., Novikov N. et al., , in: VII International Conference Aspects of Neuroscience, Warsaw, Poland (November 24-26).: Warsz.: Faculty of Biology University of Warsaw, 2017. Ch. 28 P. 78–79.
Successful performance in cognitive tasks relies on the deployment of cognitive control mechanisms including non-specific regulation of motor threshold and modulation of attentional processes specific to the task. Failure of each of the two mechanisms may lead to different kind of responses, post-response adaptations and, importantly, distinctive behavior correlates. In particular, slow correct and erroneous ...
Added: March 2, 2020
Tumanov M., Информатизация образования и науки 2019 Т. 3(43) С. 110–118
В статье исследовано применение метода гармонической линеаризации для нахождения и расчёта нелинейных колебательных процессов, возникающих в системах с переменными параметрами. В статье на базе решения типовых задач показана эффективность аналитического вычисления параметров автоколебаний в случаях, когда обычные методы исследования затруднены. Результаты вычислений подтверждены моделированием в среде Matlab. ...
Added: February 27, 2020