Zobrazeno 1 - 10
of 404
pro vyhledávání: '"Lisachenko, A. A."'
Autor:
Yudin, Nikita, Hildebrand, Roland, Bakhurin, Sergey, Degtyarev, Alexander, Lisachenko, Anna, Kuruzov, Ilya, Semenov, Andrei, Alkousa, Mohammad
In this paper, we modify and apply the recently introduced Mixed Newton Method, which is originally designed for minimizing real-valued functions of complex variables, to the minimization of real-valued functions of real variables by extending the fu
Externí odkaz:
http://arxiv.org/abs/2407.20367
Autor:
Egorova, Svetlana S., Lisachenko, Nikolai A., Kretov, Egor I., Glybovski, Stanislav B., Solomakha, Georgiy A.
Objective: To develop and evaluate a bore-integrated patch antenna array designed for whole-body excitation in ultra-high-field (UHF) magnetic resonance imaging (MRI) with improved transmit efficiency and address the limitations of existing RF coil d
Externí odkaz:
http://arxiv.org/abs/2407.01189
Autor:
Maryna Reznychenko, Dmytro Kotov, Oleksandr Bogomaz, Taras Zhivolup, Artem Reznychenko, Andriy Zalizovski, Oleksandr Koloskov, Volodymyr Lisachenko, Dmytro Dzyubanov
Publikováno v:
Український антарктичний журнал, Vol 22, Iss 1(28), Pp 40-50 (2024)
This study aims to investigate ionospheric responses to the February 27, 2023 intense geomagnetic storm over Kharkiv and the Akademik Vernadsky (hereinafter – Vernadsky) station using ionosondes. The behavior of the key ionospheric parameters (hmF2
Externí odkaz:
https://doaj.org/article/9f753a65d2484217859f72ab6101eabc
Autor:
A. Zalizovski, Y. Yampolski, I. Stanislawska, O. Koloskov, O. Budanov, O. Bogomaz, B. Gavrylyuk, A. Sopin, A. Reznychenko, A. Kashcheyev, S. Kashcheyev, V. Lisachenko
Publikováno v:
Український антарктичний журнал, Vol 21, Iss 2(27), Pp 190-209 (2023)
The paper aims at an experimental study of the mechanisms of long-distance high-frequency (HF) propagation and spatial and temporal variations of the ionospheric parameters during the first hours of a severe geomagnetic storm of April 23, 2023 by spa
Externí odkaz:
https://doaj.org/article/b63b805ded564d358a258e958db29254
Autor:
Stanislavsky, Aleksander A., Bubnov, Igor N., Koval, Artem A., Stanislavsky, Lev A., Yerin, Serge N., Zalizovski, Andriy V., Lisachenko, Volodymyr M., Konovalenko, Oleksander O., Kalinichenko, Mykola M.
Publikováno v:
In Journal of Atmospheric and Solar-Terrestrial Physics April 2023 245
Publikováno v:
Український антарктичний журнал, Vol 20, Iss 1, Pp 18-30 (2022)
The paper presents the results of ionospheric observations performed over the Ukrainian Antarctic Akademik Vernadsky station and Millstone Hill (USA). Ionospheric parameters such as peak electron density and height (hmF2 and NmF2) in October 2021 are
Externí odkaz:
https://doaj.org/article/05600cda31294026986b453d2c7f2431
Publikováno v:
Radio Physics and Radio Astronomy, Vol 27, Iss 3, Pp 203-212 (2022)
Subject and Purpose. Studying the time variations shown by the critical frequencies of the ionospheric F2 layer through comparative analysis of ionosonde data and observations of type III solar radio bursts. Methods and Methodology. In this work,
Externí odkaz:
https://doaj.org/article/060d4fe20ae045c3ae3cde5c51dd8a97
Autor:
Zakharenko, V., Konovalenko, A., Zarka, P., Ulyanov, O., Sidorchuk, M., Stepkin, S., Koliadin, V., Kalinichenko, N., Stanislavsky, A., Dorovskyy, V., Shepelev, V., Bubnov, I., Yerin, S., Melnik, V., Koval, A., Shevchuk, N., Vasylieva, I., Mylostna, K., Shevtsova, A., Skoryk, A., Kravtsov, I., Volvach, Y., Plakhov, M., Vasilenko, N., Vasylkivskyi, Y., Vavriv, D., Vinogradov, V., Kozhin, R., Kravtsov, A., Bulakh, E., Kuzin, A., Vasilyev, A., Ryabov, V., Reznichenko, A., Bortsov, V., Lisachenko, V., Kvasov, G., Mukha, D., Litvinenko, G., Brazhenko, A., Vashchishin, R., Pylaev, O., Koshovyy, V., Lozinsky, A., Ivantyshin, O., Rucker, H. O., Panchenko, M., Fischer, G., Lecacheux, A., Denis, L., Coffre, A., Grießmeier, J. -M.
This paper describes digital radio astronomical receivers used for decameter and meter wavelength observations. This paper describes digital radio astronomical receivers used for decameter and meter wavelength observations. Since 1998, digital receiv
Externí odkaz:
http://arxiv.org/abs/1703.04384
Publikováno v:
Український антарктичний журнал, Iss 1, Pp 47-55 (2021)
Ionospheric Weddell Sea anomaly is an inversion of diurnal variation of the electron density in the ionosphere over Antarctic Peninsula, Weddell Sea, and neighbor territories observed during Antarctic summer. This paper aims at analyzing the reaction
Externí odkaz:
https://doaj.org/article/59b8bb1511ef43bcb3cc3000ce6946b4
Autor:
L. N. Lytvynenko, V. V. Myshenko, V. V. Bortsov, V. M. Lisachenko, O. V. Polikarpov, V. K. Gavrikov, I. S. Spevak
Publikováno v:
Radio Physics and Radio Astronomy, Vol 25, Iss 3, Pp 231-239 (2020)
Purpose: The purpose of the work is to develop a new method for determining the complex dielectric permeability of dielectrics in mm and submm wavelength ranges. Design/methodology/approach: The proposed method consists in registration of paramete
Externí odkaz:
https://doaj.org/article/f0beb852e8df4783b9e1e3de61939679