Zobrazeno 1 - 10
of 1 861
pro vyhledávání: '"P. A. Ivanchenko"'
Autor:
Gudenko, Juliya M., Pylypchuk, Oleksandr S., Vainberg, Victor V., Gvozdovskyy, Igor A., Ivanchenko, Serhii E., Stetsenko, Denis O., Morozovsky, Nicholas V., Poroshin, Volodymir N., Eliseev, Eugene A., Morozovska, Anna N.
We reveal the visible influence of the ultra-small concentrations (1 wt.% or less) of the BaTiO3 nanoparticles (average size 24 nm) on the current-voltage characteristics and capacitance of the dielectric liquid crystal (LC) 5CB. The pure LC cell dem
Externí odkaz:
http://arxiv.org/abs/2411.14118
Autor:
Kasian, Natalia A., Lisetski, Longin N., Ivanchenko, Serhii E., Chornous, Vitalii O., Bogatyryova, Halyna V., Gvozdovskyy, Igor A.
It has been found that in mixtures of nematic E7 and smectogenic cholesteryl oleyl carbonate (COC) the S$_A$-N* transition temperature is substantially (by ~20 K) increased, as compared with pure COC, at E7 concentrations around ~40%. Within the same
Externí odkaz:
http://arxiv.org/abs/2408.00650
Autor:
Pylypchuk, Oleksandr S., Ivanchenko, Serhii E., Yelisieiev, Mykola Y., Nikolenko, Andrii S., Styopkin, Victor I., Pokhylko, Bohdan, Kushnir, Vladyslav, Stetsenko, Denis O., Bereznykov, Oleksii, Leschenko, Oksana V., Eliseev, Eugene A., Poroshin, Vladimir N., Morozovsky, Nicholas V., Vainberg, Victor V., Morozovska, Anna N.
We revealed the anomalous temperature behavior of the giant dielectric permittivity and unusual frequency dependences of the pyroelectric response of the fine-grained ceramics prepared by the spark plasma sintering of the ferroelectric BaTiO3 nanopar
Externí odkaz:
http://arxiv.org/abs/2407.01108
Explosive synchronization refers to an abrupt (first order) transition to non-zero phase order parameter in oscillatory networks, underpinned by the bistability of synchronous and asynchronous states. Growing evidence suggests that this phenomenon mi
Externí odkaz:
http://arxiv.org/abs/2311.10154
Publikováno v:
Baltic Journal of Economic Studies, Vol 10, Iss 4, Pp 135-143 (2024)
Relevance. The agricultural sector plays a pivotal role in Ukraine's economy, with a considerable degree of reliance on the effective execution of foreign economic activity (FEA). It remains a vital component of Ukraine's economy, ensuring the countr
Externí odkaz:
https://doaj.org/article/7aef2be3c48a48c0b0c70ab3fe6fe36c
Publikováno v:
Vìsnik Odesʹkogo Nacìonalʹnogo Unìversitetu: Hìmìâ, Vol 14, Iss 4, Pp 128-135 (2016)
Kinetics of sectional styrene polymerization initiated by cumene hydroperoxide, acetylacetonate of copper(II) and by the system of cumene hydroperoxide — acetylacetonate of copper(II) in a temperature range 333-363 K is studied. Kinetic parameters
Externí odkaz:
https://doaj.org/article/2d5003c9603b4090aab92d4d4578c8e6
Autor:
Morozovska, Anna N., Pylypchuk, Oleksandr S., Ivanchenko, Serhii, Eliseev, Eugene A., Shevliakova, Hanna V., Korolevich, Lubomir, Yurchenko, Lesya P., Shyrokov, Oleksandr V., Morozovsky, Nicholas V., Poroshin, Vladimir N., Kutnjak, Zdravko, Vainberg, Victor V.
Publikováno v:
Ceramics International 50 (7b), 11743 (2024)
Analytical results obtained within Landau-Ginzburg-Devonshire approach and effective media models, predict that the synergy of size effects and Vegard stresses can significantly enhance the electrocaloric cooling (up to 7 times) of the BaTiO3 nanopar
Externí odkaz:
http://arxiv.org/abs/2309.03187
Publikováno v:
Vìsnik Odesʹkogo Nacìonalʹnogo Unìversitetu: Hìmìâ, Vol 15, Iss 13, Pp 97-105 (2015)
Kinetics of polymerization of styrene in-bulk initiated by tertiary hydroperoxides of butyl and cumene, by the complex of copper(II) chloride with piperidin-1-yl piperidine-1-carbodithioate and systems on their basis in a temperature range 293—363
Externí odkaz:
https://doaj.org/article/c4c4be06fb41461db0541e0a4910fd7e
Autor:
Kalyakulina, Alena, Yusipov, Igor, Moskalev, Alexey, Franceschi, Claudio, Ivanchenko, Mikhail
eXplainable Artificial Intelligence (XAI) is a rapidly progressing field of machine learning, aiming to unravel the predictions of complex models. XAI is especially required in sensitive applications, e.g. in health care, when diagnosis, recommendati
Externí odkaz:
http://arxiv.org/abs/2307.13704
Autor:
Igor Sergeevich Ivanchenko
Publikováno v:
Prostranstvennaâ Èkonomika, Vol 20, Iss 3, Pp 128-153 (2024)
The purpose of this study is to clarify the prospects for the creation of a new reserve currency by the (Shanghai Cooperation Organization (SCO) countries to reduce foreign exchange costs in trade transactions, to strengthen integration processes in
Externí odkaz:
https://doaj.org/article/90648bd62a1b49e5b879971e03972aa6