?
Математические модели неферментативной модификации белков живых организмов
СПб. :
RGPU named by A.I. Herzen, 2014.
Dmitriev A., Markov N.
Piontkovski D., / Series arXiv "math". 2026.
A noncommutative projective variety is defined, following Artin and Zhang, by a graded coherent algebra 𝐴. The category of coherent sheaves is then the quotient qgr(𝐴) of the category of finitely presented graded modules by the subcategory of torsion modules. We consider the categorical and polynomial entropies of the Serre twist, that is, of the ...
Added: June 23, 2026
Piontkovski D., / Series arXiv "math". 2025.
If a symmetric multilinear algebra is weakly nil, then it is Engel. This result may be regarded as an infinite-dimensional analogue of the well-known Jacobian theorem, which states that if a polynomial mapping has a polynomial inverse, then its Jacobian matrix is invertible. This refines a theorem of Gerstenhaber and partially answers a question posed ...
Added: June 23, 2026
Flamarion M. V., Pelinovsky E., Nonlinear Dynamics 2026 Vol. 114 Article 784
In this article, we investigate wave packet and solitary wave dynamics in the Whitham–Ostrovsky (WO) equation. By means of a multiple-scales expansion, we formally derive a nonlinear Schrödinger (NLS) equation governing the envelope evolution.The corresponding modulational stability diagram is then obtained using the Lighthill criterion. We show that sufficiently large values of the low-frequency dispersive term render ...
Added: June 5, 2026
Shipilov F., Barnyakov A., Ivanov A. et al., / Series Physics "arxiv.org". 2026.
A fast simulation of the detector response is a vital task in high-energy physics (HEP). Traditional Monte-Carlo methods form the backbone of modern particle physics simulation software but are computationally expensive. We present a machine-learning-based approach to fast simulation of the Focusing Aerogel Ring Imaging Cherenkov (FARICH) detector response. Given a particle track and momentum, ...
Added: May 19, 2026
Chernyshov D., В кн.: XXIX Межвузовская научно-техническая конференция студентов, аспирантов и молодых специалистов им. Е.В. Арменского. Москва, 22–28 апреля 2025 года.: М.: МИЭМ НИУ ВШЭ, 2025.
Работа посвящена исследованию обобщённого отображения Чирикова, описывающего динамику плоского ротатора под действием периодического возбуждения. Получены аналитические и численные результаты, демонстрирующие стохастический характер поведения системы при бинарном режиме управления ротатором. Новым результатом является обнаружение дополнительной серии резонансов (антирезонансов) и установление границы устойчивого поведения нелинейных отображений при сложных методах управления динамикой нелинейной системы. ...
Added: May 19, 2026
Derkacheva A., Sakirkina M., Kraev G. et al., /. 2026.
Comprehensive data on natural hazards and their consequences are crucial for effective for risk assessment, adaptation planning, and emergency response. However, many countries face challenges with fragmented, inconsistent, and inaccessible data, particularly regarding local-scale events. To address this data gap in Russia, we developed an end-to-end processing pipeline that scrapes news from various online sources, ...
Added: April 28, 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
Gabdullin N., Androsov I., / Series Computer Science "arxiv.org". 2026.
Label prediction in neural networks (NNs) has O(n) complexity proportional to the number of classes. This holds true for classification using fully connected layers and cosine similarity with some set of class prototypes. In this paper we show that if NN latent space (LS) geometry is known and possesses specific properties, label prediction complexity can ...
Added: April 2, 2026
Sorokin K., Beketov M., Онучин А. et al., / arxiv.org. Серия cs.SI "Social and Information Networks ". 2025.
Community detection in complex networks is a fundamental problem, open to new approaches in various scientific settings. We introduce a novel community detection method, based on Ricci flow on graphs. Our technique iteratively updates edge weights (their metric lengths) according to their (combinatorial) Foster version of Ricci curvature computed from effective resistance distance between the ...
Added: January 15, 2026
Petrovanov I., Sergeev A., / Series Computer Science "arxiv.org". 2025. No. 2512.18332.
Transport coding reduces message delay in packet-switched networks by introducing controlled redundancy at the transport layer: original packets are encoded into coded packets, and the message is reconstructed after the first successful deliveries, effectively shifting latency from the maximum packet delay to the -th order statistic. We present a concise, reproducible discrete-event implementation of transport coding in OMNeT++, including ...
Added: December 24, 2025
Hessian-based lightweight neural network for brain vessel segmentation on a minimal training dataset
Меньшиков И. А., Бернадотт А. К., Elvimov N. S., / Series arXie "Statistical mechanics". 2025.
Accurate segmentation of blood vessels in brain magnetic resonance angiography (MRA) is essential for successful surgical procedures, such as aneurysm repair or bypass surgery. Currently, annotation is primarily performed through manual segmentation or classical methods, such as the Frangi filter, which often lack sufficient accuracy. Neural networks have emerged as powerful tools for medical image ...
Added: December 1, 2025
Кедров А. А., С.А. Щербинин, Известия высших учебных заведений. Прикладная нелинейная динамика 2025 Т. 31 № 1
Цель настоящей работы — исследовать устойчивость периодического режима, соответствую щего моде с наименьшей длиной волны (так называемой-моде) в цепочке Тоды с кубическим возмущением в потенциале межчастичного взаимодействия. Методы. Исследование устойчивости проводилось на основе стандартного метода Флоке. Возникающая при этом вариационная система расщепляется на независимые двумерные подсистемы, что позволяет делать выводы об устойчивости-моды для цепочки из ...
Added: November 27, 2025
Rubchinskiy A., Chubarova D., / Series WP7 "Математические методы анализа решений в экономике, бизнесе и политике". 2025. No. WP7/2025/01.
The article examines one of the most famous examples of socio-economic systems, characterized by significant uncertainty – the S&P-500 stock market, where shares of 500 largest US companies are traded. No assumptions are made about the probabilistic characteristics of the stock market. A flexible algorithm for daily trading has been developed, based on both known fixed data ...
Added: November 9, 2025
Екомасов Е. Г., Нерадовский Д. Ф., Фахретдинов М. И. et al., Челябинский физико-математический журнал 2025 Т. 10 № 2 С. 227–235
The effect of the thickness of a non-magnetic layer and the magnitude of the spin-polarized current on the coupled dynamics of two magnetic vortices in a spin-transfer nanoscillator is investigated. A spin-transfer nanoscillator in the form of a three–layer conductive cylinder with a diameter of 200 nm is considered. The features of the dynamics of ...
Added: September 28, 2025
Alexeeva T., Кузнецов Н. В., Мокаев Т. Н. et al., Дифференциальные уравнения и процессы управления 2023 № 4 С. 53–66
The accuracy of forecasting the expected values of economic indicators under conditions of irregular dynamics has a key role in taking optimal management decision-making. This current and complex task can be effectively solved using modern methods based on artificial intelligence, the wide introduction of which into the economy is aimed at by the Federal project "Artificial ...
Added: January 7, 2024
T. A. Alexeeva, Kuznetsov N. V., Lobachev M. et al., IFAC-PapersOnLine 2022 Vol. 55 No. 40 P. 157–162
One of the central tasks of macroeconomic analysis is forecasting and control of economic agents’ expectations for key macroeconomic indicators such as inflation, gross domestic product (GDP), prices and others, etc., so that to achieve maximum level of their welfare through monetary and fiscal policy. This problem is solved within the framework of the optimal ...
Added: April 8, 2023
Safonova I., Сафонова И. Е., Телекоммуникации 2021 № 4 С. 9–13
Cyber threats and information security principles for unmanned vehicles are listed. A developed probabilistic model is presented that allows for a predictive assessment of the emergence of cyber threats through wireless communication channels. ...
Added: October 25, 2022
Alexeeva T., Kuznetsov N., Mokaev T. et al., IFAC-PapersOnLine 2021 Vol. 54 No. 17 P. 26–31
Irregular fluctuations in economy lead to unpredictable effects and disrupt its stable functioning. Various tools could be used to stabilize irregular dynamics in economic models. For example, to introduce control into the model as an external function, as well as to take into account the internal characteristics of economic agents in the economy under consideration, ...
Added: February 5, 2022
Azarov A., Suvorova A., Koroleva M. et al., , in: International Symposium on Computer Science, Digital Economy and Intelligent Systems, CSDEIS 2019Vol. 1127: Advances in Intelligent Systems, Computer Science and Digital Economics.: Springer, 2020. P. 299–306.
Added: September 30, 2021
Alexeeva T.A., Kuznetsov N. V., Mokaev T. N. et al., Journal of Physics: Conference Series 2021 Vol. 1864 Article 012040
Dynamics of the New Keynesian model in continuous time with the Rotemberg pricing mechanism is considered within a framework of an optimal control problem. Various regimes of monetary and fiscal policy ('active' and 'passive') can lead to unstable dynamics in the economy. Parameters of the Taylor rules for both monetary and fiscal policies determine conditions ...
Added: June 3, 2021
Екомасов Е. Г., Степанов С. В., Звездин К. А. et al., Физика металлов и металловедение 2021 Т. 122 № 3 С. 212–220
Исследована структура и динамика намагниченности в вихревом спин-трансферном наноосцилляторе, который представляет собой трехслойный спин-вентильный магнитный наностолбик большого диаметра – 400 нм, при протекании через него спин-поляризованного тока. С помощью микромагнитного моделирования было исследовано динамическое изменение структуры вихрей, траектории их движения в зависимости от величины спин-поляризованного тока. Показана возможность существования различных режимов движения вихрей: затухающие осцилляции ...
Added: April 20, 2021
Alexeeva T., Barnett W., Kuznetsov N. et al., IFAC-PapersOnLine 2020 Vol. 53 No. 2 P. 16971–16976
Control and stabilization of irregular and unstable behavior of dynamic systems (including chaotic processes) are interdisciplinary problems of interest to a variety of scientific fields and applications. Using the control methods allows improvements in forecasting the dynamics of unstable economic processes and offers opportunities for governments, central banks, and other policy makers to modify the ...
Added: April 17, 2021
Knyazeva H., Foresight and STI Governance 2020 Vol. 14 No. 4 P. 6–8
The introductory article to the special issue “The Strategic Management in the Context of Dynamic Complexity” substantiates that models and representations of the theory of complex systems are becoming the most relevant science-based background, which allows us to respond to the challenges of our time. The increasing complexity of social and economic development processes, accompanied ...
Added: December 25, 2020
Kravchenko N., В кн.: XVII МЕЖДУНАРОДНАЯ ЗИМНЯЯ ШКОЛА-СЕМИНАР ПО РАДИОФИЗИКЕ И ЭЛЕКТРОНИКЕ СВЕРХВЫСОКИХ ЧАСТОТ. МАТЕРИАЛЫ ШКОЛЫ-СЕМИНАРА. ISBN 978-5-9999-2952-2.: Саратовский государственный университет им. Н.Г. Чернышевского, 2018. С. 14–18.
В июле 1916 года скончался выдающийся российский ученый в области радиофизики и электроники сверхвысоких частот, заслуженный деятель науки Российской Федерации, лидер научной школы по методам СВЧ электроники, доктор физико-математических на- ук, профессор МИЭМ НИУ ВШЭ Виктор Анатольевич Солнцев. Исследуя научное творчество В.А. Солнцева, для начала обозначим основные направ- ления его научной деятельности так, как это ...
Added: April 23, 2018