Zobrazeno 1 - 10
of 201
pro vyhledávání: '"A. I. Koshelev"'
Publikováno v:
Biosystems Diversity, Vol 28, Iss 1, Pp 34-40 (2020)
This study discussed the importance of the phylogenetic components in the structure of bird communities of anthropogenically transformed ecosystems. The investigation was conducted in the landscapes of the south and south-east of Ukraine in the nesti
Externí odkaz:
https://doaj.org/article/ab816b23440947eb942e86f20bbe018b
Publikováno v:
Vìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Bìologìâ, Ekologìâ, Vol 24, Iss 1, Pp 203-210 (2016)
This study presents the results of a long term study of nesting colonies of the Caspian gull (Larus cachinnans Pallas, 1811) on the islands of the Molochniy Liman and in Obitochnaya Bay (Azov Sea), in the South of Ukraine (Zaporizhia region), conduct
Externí odkaz:
https://doaj.org/article/0c4ba14512b84ca082cc44f222a565f8
Autor:
V. I. Koshelev, Ngoc Hieu Trinh
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 27, Iss 2, Pp 93-104 (2024)
Introduction. The use of non-equidistant pulse sequences as probing radar signals makes it possible to eliminate blind spots in speed and range. However, the implementation of multi-channel Doppler filtering (MDF) based on the classical fast Fourier
Externí odkaz:
https://doaj.org/article/273d85f49dd8485791196ca28f500b22
Autor:
Konstantin V. Stepanov, Andrey A. Zhirnov, Tatyana V. Gritsenko, Roman I. Khan, Kirill I. Koshelev, Cesare Svelto, Alexey B. Pnev
Publikováno v:
Sensors, Vol 24, Iss 11, p 3338 (2024)
In the paper, a new method of phase measurement error suppression in a phase-sensitive optical time domain reflectometer is proposed and experimentally proved. The main causes of phase measurement errors are identified and considered, such as the inf
Externí odkaz:
https://doaj.org/article/ceecdf5b6e6e4f77b05fe74429ccce02
Autor:
Tatyana V. Gritsenko, Maria V. Orlova, Andrey A. Zhirnov, Yuri A. Konstantinov, Artem T. Turov, Fedor L. Barkov, Roman I. Khan, Kirill I. Koshelev, Cesare Svelto, Alexey B. Pnev
Publikováno v:
Sensors, Vol 24, Iss 7, p 2281 (2024)
In recent years, attention to the realization of a distributed fiber-optic microphone for the detection and recognition of the human voice has increased, whereby the most popular schemes are based on φ-OTDR. Many issues related to the selection of o
Externí odkaz:
https://doaj.org/article/5ac5efea878349f9821dfacc99289bf5
Publikováno v:
Biosystems Diversity, Vol 29, Iss 2, Pp 102-110 (2021)
Morphometric data are widely used in biology to assess intraspecific and inter-population variability and for bioindication and environmental condition assessment. The following hypotheses have been experimentally tested in the paper: 1) the vegetati
Externí odkaz:
https://doaj.org/article/673bd5da50314bd4abe85852e44dc039
Autor:
O. O. Danchenko, Y. V. Nicolaeva, O. I. Koshelev, M. M. Danchenko, O. V. Yakoviichuk, T. I. Halko
Publikováno v:
Regulatory Mechanisms in Biosystems, Vol 12, Iss 2, Pp 307-314 (2021)
Among natural antioxidants, increasing attention is being drawn to avenanthramides - phenolic compounds of the common oat Avena sativa (Linnaeus, 1753). Research has shown that avenanthramides have much higher antioxidant activity than well-known bio
Externí odkaz:
https://doaj.org/article/0f86b547e2994551a735b6cf11cfe802
Autor:
Andrey A. Zhirnov, German Y. Chesnokov, Konstantin V. Stepanov, Tatyana V. Gritsenko, Roman I. Khan, Kirill I. Koshelev, Anton O. Chernutsky, Cesare Svelto, Alexey B. Pnev, Olga V. Valba
Publikováno v:
Sensors, Vol 23, Iss 10, p 4978 (2023)
The paper presents the application of a phase-sensitive optical time-domain reflectometer (phi-OTDR) in the field of urban infrastructure monitoring. In particular, the branched structure of the urban network of telecommunication wells. The encounter
Externí odkaz:
https://doaj.org/article/f4051f9f44b04b47b6715f9446f13b8a
Autor:
Anastasiya Yu. Laptiyova, Alexandr A. Andreev, Аlexandr А. Glukhov, Dmitry A. Atiakshin, Anton P. Ostroushko, Sergey N. Boyev, Tatyana G. Nikishina, Elena V. Mikulich, Pyotr I. Koshelev, Ekaterina A. Andreeva
Publikováno v:
International Journal of Biomedicine, Vol 10, Iss 3, Pp 257-261 (2020)
Background: Surgical treatment of massive hepatic formations is an acute problem of operative hepatology, often being the only way to increase the life expectancy of patients. However, even nowadays, liver surgeries are considered to be traumatic, hi
Externí odkaz:
https://doaj.org/article/d4d77eb478cb46208619945e8aaf1120
Autor:
Ivan A. Barantsov, Alexey B. Pnev, Kirill I. Koshelev, Vadim S. Tynchenko, Vladimir A. Nelyub, Aleksey S. Borodulin
Publikováno v:
Sensors, Vol 23, Iss 2, p 582 (2023)
This article is devoted to the development of a classification method based on an artificial neural network architecture to solve the problem of recognizing the sources of acoustic influences recorded by a phase-sensitive OTDR. At the initial stage o
Externí odkaz:
https://doaj.org/article/2a29601e11f44c6ab4cdb5b8b9b261fa