Zobrazeno 1 - 10
of 614
pro vyhledávání: '"Novitskii, A. P."'
Autor:
Pichugin, Alexander, Pechin, Maksim, Beznosikov, Aleksandr, Novitskii, Vasilii, Gasnikov, Alexander
Variational inequalities are a universal optimization paradigm that incorporate classical minimization and saddle point problems. Nowadays more and more tasks require to consider stochastic formulations of optimization problems. In this paper, we pre
Externí odkaz:
http://arxiv.org/abs/2408.06728
Decentralized optimization is well studied for smooth unconstrained problems. However, constrained problems or problems with composite terms are an open direction for research. We study structured (or composite) optimization problems, where the funct
Externí odkaz:
http://arxiv.org/abs/2304.03557
Autor:
Gasnikov, Alexander, Novitskii, Anton, Novitskii, Vasilii, Abdukhakimov, Farshed, Kamzolov, Dmitry, Beznosikov, Aleksandr, Takáč, Martin, Dvurechensky, Pavel, Gu, Bin
Gradient-free/zeroth-order methods for black-box convex optimization have been extensively studied in the last decade with the main focus on oracle calls complexity. In this paper, besides the oracle complexity, we focus also on iteration complexity,
Externí odkaz:
http://arxiv.org/abs/2201.12289
Ternary half Heusler alloys are under intense investigations recently towards achieving high thermoelectric figure-of-merit (ZT). Of particular interest is the ZrNiPb based half Heusler (HH) alloy where an optimal value of ZT = 0.7 at 773 K has been
Externí odkaz:
http://arxiv.org/abs/2208.13563
Record‐High Thermoelectric Performance in Al‐Doped ZnO via Anderson Localization of Band Edge States
Autor:
Illia Serhiienko, Andrei Novitskii, Fabian Garmroudi, Evgeny Kolesnikov, Evgenia Chernyshova, Tatyana Sviridova, Aleksei Bogach, Andrei Voronin, Hieu Duy Nguyen, Naoyuki Kawamoto, Ernst Bauer, Vladimir Khovaylo, Takao Mori
Publikováno v:
Advanced Science, Vol 11, Iss 26, Pp n/a-n/a (2024)
Abstract Oxides are of interest for thermoelectrics due to their high thermal stability, chemical inertness, low cost, and eco‐friendly constituting elements. Here, adopting a unique synthesis route via chemical co‐precipitation at strongly alkal
Externí odkaz:
https://doaj.org/article/bb1fd5677f854d0885aa55b488029591
Autor:
Chezhegov, Savelii, Novitskii, Anton, Rogozin, Alexander, Parsegov, Sergei, Dvurechensky, Pavel, Gasnikov, Alexander
Decentralized optimization is widely used in large scale and privacy preserving machine learning and various distributed control and sensing systems. It is assumed that every agent in the network possesses a local objective function, and the nodes in
Externí odkaz:
http://arxiv.org/abs/2203.00681
Thermoelectric properties of Sm-doped BiCuSeO oxyselenides fabricated by two-step reactive sintering
Autor:
Novitskii, Andrei, Serhiienko, Illia, Novikov, Sergey, Kuskov, Kirill, Pankratova, Daria, Sviridova, Tatyana, Voronin, Andrei, Bogach, Aleksei, Skryleva, Elena, Parkhomenko, Yuriy, Burkov, Alexander, Mori, Takao, Khovaylo, Vladimir
Among layered oxygen-containing compounds, BiCuSeO is one of the most promising candidates for thermoelectric applications due to its intrinsically low thermal conductivity and good thermal stability. However, the rather poor electrical conductivity
Externí odkaz:
http://arxiv.org/abs/2112.06600
Heat transport in a three-dimensional complex (dusty) plasma was experimentally studied in microgravity conditions using Plasmakristall-4 (PK-4) instrument on board the International Space Station (ISS). An extended suspension of microparticles was l
Externí odkaz:
http://arxiv.org/abs/2109.01496
Autor:
Matthews, L. S., Vermillion, K., Hartmann, P., Rosenberg, M., Rostami, S., Kostadinova, E. G., Hyde, T. W., Pustylnik, M. Y., Lipaev, A. M., Usachev, A. D., Zobnin, A. V., Thoma, M. H., Petrov, O., Thomas, H. M., Novitskii, O. V.
An interesting aspect of complex plasma is its ability to self-organize into a variety of structural configurations and undergo transitions between these states. A striking phenomenon is the isotropic-to-string transition observed in electrorheologic
Externí odkaz:
http://arxiv.org/abs/2107.10367
Autor:
Novitskii, Andrei, Serhiienko, Illia, Novikov, Sergey, Ashim, Yerzhan, Zheleznyi, Mark, Kuskov, Kirill, Pankratova, Daria, Konstantinov, Petr, Voronin, Andrei, Tretiakov, Oleg, Inerbaev, Talgat, Burkov, Alexander, Khovaylo, Vladimir
In this study, we demonstrate that introducing of rare-earth elements, $R$ = La or Pr, into the Bi-O charge reservoir layer of BiCuSeO leads to an increase of both, the charge carrier concentration and the effective mass. Although the charge carrier
Externí odkaz:
http://arxiv.org/abs/2104.10509