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Программный модуль для оценки вероятности отказов скважинных электроцентробежных насосов
Сборник научных трудов Новосибирского государственного технического университета. 2020. Т. 1. № 97. С. 55–66.
Keywords: нефть
Entina E., Nadzharov A., Мелоян Т. Х. et al., Российский совет по международным делам (РСМД) 2026
Спустя четыре года с введения недружественными странами полномасштабных санкционных ограничений против России содержательная сторона тематики международный антироссийских рестрикций представляется хорошо изученной. Отечественные и зарубежные исследовательские коллективы создали обширные базы данных ограничений, выявили стратегии ухода/присутствия иностранных компаний, изучили стратегии адаптации России, недружественных, третьих стран, идентифицировали трансформацию глобальных цепочек. В контексте этих исследований меньше внимания уделялось механизмам ...
Added: June 3, 2026
Гущина В. А., / Series chemrxiv-2023-vpzhz-v2 "ChemRxiv". 2023.
All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are being intensively studied due to their unique properties and wide range of applications; however, however, the nature of their optical properties is not yet fully understood due to the difficulty of synthesis of singlephase nanoparticles. In this article we describe the features of the synthesis of single-phase particles ...
Added: May 14, 2026
Pilé I., Deng Y., Shchur L., / Series arXiv "math". 2026. No. 2604.10254.
We investigate the spatial overlap of successive spin configurations in Markov chain Monte Carlo simulations using the local Metropolis algorithm and the Svendsen-Wang and Wolff cluster algorithms. We examine the dynamics of these algorithms for two models in different universality classes: the Ising model and the Potts model with three components. The overlap of two ...
Added: April 20, 2026
Chernyshov D., Satanin A., Shchur L., / Series arXiv "math". 2025.
We investigate the boundary separating regular and chaotic dynamics in the generalized Chirikov map, an extension of the standard map with phase-shifted secondary kicks. Lyapunov maps were computed across the parameter space (K,K(α, τ)) and used to train a convolutional neural network (ResNet18) for binary classification of dynamical regimes. The model reproduces the known critical ...
Added: November 21, 2025
Kagan M., Silkin V. M., Efremov D. V., / Series arXiv "math". 2024. No. 2411.12836.
In this study, we analyze the dielectric function of high-Tc cuprates as a function of doping level, taking into account the full energy band dispersion within the CuO2 monolayer. In addition to the conventional two-dimensional (2D) gapless plasmon mode, our findings reveal the existence of three anomalous branches within the plasmon spectrum. Two of these branches ...
Added: November 27, 2024
Influence of anisotropy on the study of critical behavior of spin models by machine learning methods
Sukhoverkhova D., Shchur L., / Series arXiv "math". 2024. No. 2410.14523.
In this paper, we applied a deep neural network to study the issue of knowledge transferability between statistical mechanics models. The following computer experiment was conducted. A convolutional neural network was trained to solve the problem of binary classification of snapshots of the Ising model's spin configuration on a two-dimensional lattice. During testing, snapshots of ...
Added: October 21, 2024
Mozolenko V., Fadeeva Marina, Shchur L., / Series arXiv "math". 2024. No. 2405.10865.
The development of new algorithms for simulations in physics is as important as the development of new analytical methods. In this paper we present a comparison of the recently developed microcanonical population annealing (MCPA) algorithm with the rather mature Wang-Landau algorithm. The comparison is performed on two cases of the Potts model exhibiting a first ...
Added: May 20, 2024
Kagan M., Аксёнов С. В., / Series Research Square "Research Suqare". 2024. No. 1.
We study different resonances (first of all of the Fano type) in the interference device formed by the Aharonov-Bohm ring with superconducting (SC) wire in the topologically nontrivial state playing a role of a bridge between top and bottom arms. We analyze Majorana modes on the ends of the SC wire and show that the collapse of the ...
Added: April 10, 2024
Bossman A., Gubareva M., Teplova T., Energy Economics 2023 Vol. 127 Article 107080
The interplay between energy and agricultural commodities and the responses of agricultural commodities to global uncertainty factors have been receiving increasing attention due to the pivotal contributions of commodity markets to the world economy. This study investigates the asymmetric effects of oil, market volatility and sentiment, economic policy uncertainty, and geopolitical risk on agricultural commodities ...
Added: March 22, 2024
Ребров Я. В., Glazkov V., Murtazoev A. F. et al., / Series cond-mat "arxiv.org". 2023.
Nabokoite family compounds ACu7(TeO4)(SO4)5Cl (A=Na, K, Cs, Rb) are one of the candidates for the evasive spin-liquid state predicted for highly-frustrated square kagome lattice (SKL). Their magnetic subsystem includes SKL layers decorated by additional copper ions. All members of this family are characterized by quite high Curie-Weiss temperatures (∼80−200 K), but magnetic ordering was reported ...
Added: January 29, 2024
Степанов В. А., Yasnitsky L., Экспозиция Нефть Газ 2023 № 3 С. 69–73
One of the main sources of obtaining information about the degree of heating of the oil reservoir and the effectiveness of steam cyclic treatment
of wells is geophysical research, which consists in measuring the temperature in the wellbore using a descent geophysical instrument.
This is a rather laborious and not always successful process. As an alternative, this ...
Added: November 20, 2023
Shurakov A., Kaurova N., Belikov I. et al., / Series Physics "arxiv.org". 2022.
In this paper, we report on the method of nondestructive quality control that can be used in fabrication of GaAs high-speed electronics. The method relies on the surface potential mapping and enables rigid in vivo analysis of transport properties of an active electronic device incorporated into a complex integrated circuit. The study is inspired by ...
Added: September 15, 2023
Hanif W., Andraz J. M., Gubareva M. et al., International Review of Economics and Finance 2024 Vol. 89 P. 1–16
This paper studies the hedge against falling oil prices and the safe haven properties of fourteen major country-specific real estate investment trusts (REITs) indices for the Asian, American, European, and worldwide geographies. Our analyses are performed from both, returns and conditional volatility perspectives. Our sample spans from January 2016 until August 2022, covering the COVID-19 ...
Added: July 31, 2023
Umar Z., Abrar A., Hadhri S. et al., Energy Economics 2023 Vol. 119 Article 106562
We analyze the impact of oil price shocks on three unique fixed income asset classes representing conventional
bonds, Islamic bonds (sukuks) and green bonds by employing network dynamic connectedness framework. Our sample period ranges from May 1, 2009, to March 1, 2022, covering the aftermath of global financial crisis, subsequent boom and bust of oil markets and ...
Added: June 22, 2023
Kalinin I., Никифорова Н. В., Orlova G., СПб.: Астерион, 2022.
The history of the USSR is considered for the first time in a techno-political and socio-cultural perspective through the prism of the "energy of socialism". Based on the STS methodology, the social anthropology of technology and the cultural history of Russia, the interaction of major scientific and technical programs of the electrical, nuclear and oil ...
Added: June 2, 2023
Pugach N., Safonchik M. O., Belotelov V. et al., / Series "cond-mat". 2022. No. 2110.00369.
A detailed investigation of a superconducting spin-triplet valve is presented. This spin-valve consists of a superconducting film covering a metal with an intrinsic spiral magnetic order, which could result from competing isotropic exchanges or, if the crystal lattice breaks central symmetry, from asymmetric Dzyaloshinskii-Moriya exchange. Depending on the anisotropy, such a metal may change its ...
Added: November 16, 2022
Novikov S. V., / Series cond-mat "arxiv.org". 2022. No. 2209.14955.
Charge transport in amorphous semiconductors having spatially correlated exponential density of states (DOS) has been considered for the arbitrary behavior of the correlation function of random energies. Average carrier velocity is exactly calculated for the quasi-equilibrium (nondispersive) transport regime. For the symmetric exponential DOS with exponential tails for low and high energies and non-positive correlation ...
Added: November 1, 2022
Abashkin V., Bereznoy A., Gokhberg L. et al., НИУ ВШЭ, 2022.
Доклад, подготовленный Институтом статистических исследований и экономики знаний Национального исследовательского университета «Высшая школа экономики» в рамках деятельности Российской кластерной обсерватории, посвящен изучению инновационных и промышленных кластеров в нефтегазовом секторе.
В исследовании анализируются изменения технологической специализации регионов добычи нефтегазового сырья, проводится их сопоставление с другими субъектами Российской Федерации по показателям инновационной активности. Рассмотрены особенности кластерного развития ресурсных ...
Added: April 7, 2022
Ikhsanov R., Mazur E., Kagan M., / Series "Working papers by Cornell University". 2022. No. 2202.01452.
At present, the task of searching for compounds with a high superconducting transition temperature is a very relevant scientific direction. Usually, the calculation of is carried out by numerically solving the system of Eliashberg equations. In this paper, a set of programs for solving this system written in various forms on the imaginary axis is ...
Added: February 4, 2022
Mustafin A., Вопросы экономики 2022 № 11 С. 57–72
This article uses the records of archival monastic account books to answer a number of questions about trade relations between Russia and the East countries at the second half of the 17th and early 18th century. In particular, for some oriental goods, we can talk about the predominance of the import from Europe. Although contemporaries ...
Added: December 8, 2021
Potanin B., Trifonov Y., Прикладная эконометрика 2021 Т. 63 С. 76–90
This study applies various modifications of the GARCH-M process to model oil prices considering both the expectations of the investors and the risk premium. Futures contracts prices and volatility are used as a proxy for investors’ expectations and risk premium correspondingly. The advantage of the proposed approach is that the risk premium is modeled without ...
Added: September 22, 2021
Budkov Y., Zavarzin S., Kolesnikov A. L., Journal of Physical Chemistry C 2021 Vol. 125 No. 38 P. 21151–21159
We formulate a general mean-field theory for a flat electric double layer in ionic liquids and electrolyte solutions with ions possessing static polarizability and a permanent dipole moment on a charged electrode. We establish a new analytical expression for electric double-layer differential capacitance, determining it as an absolute value of the ratio of the local ...
Added: September 16, 2021
Sanina N., Isaeva U., Utenyshev A. et al., Inorganica Chimica Acta 2021 Vol. 527 Article 120559
A new inhibitor of phosphodiesterase (PDE), i.e., nitric oxide (NO) donor, a water soluble DNIC Na[Fe(C7H5N4S)2(NO)2]⋅2.5H2O (1), has been synthesized. The structure of the new complex, its physical-chemical properties in the solid state and in solutions have been studied experimentally (X-ray analysis, IR, UV-Vis, Mossbauer spectroscopy, mass-spectrometry, and amperometry) and theoretically (quantum-chemical modeling by DFT ...
Added: September 16, 2021
Grigoryev L. M., Нефтегазовая вертикаль 2020 № 21-22 С. 51–58
Два года назад наша статья (см. Л.Григорьев «Бочки миллиардов, №1-2/2019) была посвящена трудной стабилизации на рынке нефти на базе соглашения ОПЕК + Россия. С позиции 2017–2019 годов можно сказать, что базисные интересы основных игроков на рынке нефти сохранились, но внешние объективные условия, равно как и масштаб рисков, степень их понимания основными игроками, необходимая глубина взаимодействия серьезно ...
Added: January 11, 2021