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Расчет пьезоактюаторов методом конечных элементов
Успехи современного естествознания. 2014. № 1. С. 45–47.
Вячеслав С., Ivashov E., Федотов К. Д.
Base concepts of finite elements method are given. Machine experiment with piezoceramic actuator is made. Machine experiment results are compared with results of theoretical researches in current area.
Language:
Russian
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
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
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
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
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
Meshchaninov V., Strashnov, P., Shevtsov A. et al., / Cornell University. Серия CoRR, arXiv:2403.03726 "Computing Research Repository,". 2025.
Protein design requires a deep understanding of the inherent complexities of the protein universe. While many efforts lean towards conditional generation or focus on specific families of proteins, the foundational task of unconditional generation remains underexplored and undervalued. Here, we explore this pivotal domain, introducing DiMA, a model that leverages continuous diffusion on embeddings derived ...
Added: October 5, 2025
Shabalin A., Meshchaninov V., Vetrov D., / Series cs.CL, arXiv:2505.18853 "Computation and Language". 2025.
Diffusion models have achieved state-of-the-art performance in generating images, audio, and video, but their adaptation to text remains challenging due to its discrete nature. Prior approaches either apply Gaussian diffusion in continuous latent spaces, which inherits semantic structure but struggles with token decoding, or operate in categorical simplex space, which respect discreteness but disregard semantic ...
Added: October 5, 2025
Dmitriy Demin, Ilya Grebenkin, International Journal of Advanced Manufacturing Technology 2024 Vol. 133 No. 7 P. 3461–3473
It is well known that residual stresses and accumulated deformations during drawing processes can influence mechanical properties of the resulting products. This paper proposes the use of machine learning methods, such as artificial neural networks (ANN) and polynomial regression, to gain insight into the nature of these distributions across the cross-section of round wires. The ...
Added: July 17, 2024
Кищик А. А., Aksenov S. A., Кищик М. С. et al., Физика металлов и металловедение 2023 Т. 124 № 6 С. 540–549
The effects of isothermal multidirectional forging (IMF) on the grain structure, second-phase particles of solidification origin, and dispersoids in the Al–4.9Mg–0.9Ni–0.9Fe–0.2Zr–0.1Sc alloy have been
investigated. The strain distribution over the sample volume during forging in a closed die has been analyzed
using a finite-element simulation. A method of considering the friction effect and changes in strain rate ...
Added: November 28, 2023
М.: МАИ, 2021.
Сборник включает в себя научные работы, отражающие современные мировые достижения в вычислительной механике, механике деформируемого твердого тела, механике жидкости, газа и плазмы, аэрокосмической механике, прикладной математике, разработке прикладных программных средств.
Для специалистов в области прикладной математики и механики, математического моделирования, информационных технологий, разработчиков современных прикладных программных систем, аспирантов и студентов старших курсов технических вузов. ...
Added: February 18, 2022
Yavich N., Koshev N., Malovichko M. et al., IEEE Transactions on Medical Imaging 2022 Vol. 41 No. 3 P. 647–656
For interpretation of electroencephalography (EEG) and magnetoencephalography (MEG) data, multiple solutions of the respective forward problems are needed. In this paper, we assess performance of the mixed-hybrid finite element method (MHFEM) applied to EEG and MEG modeling. The method provides an approximate potential and induced currents and results in a system with a positive semi-definite ...
Added: October 21, 2021
Aksenov S. A., Mikolaenko V., Metals 2020 Vol. 10 No. 10 Article 1353
Tensile testing is widely used for the mechanical characterization of materials subjected to superplastic deformation. At the same time, it is known that the obtained flow data are affected by specimen geometry. Thus, they characterize the specimen rather than the material. This work provides the numerical analysis aimed to study how the material flow behavior ...
Added: December 13, 2020
Malovichko M., Koshev N., Yavich N. et al., IEEE Transactions on Biomedical Engineering 2021 Vol. 68 No. 6 P. 1811–1819
Objective: This paper develops a novel approach for fast and reliable reconstruction of EEG sources in MRI-based head models. Methods: The inverse EEG problem is reduced to the Cauchy problem for an elliptic partial-derivative equation. The problem is transformed into a regularized minimax problem, which is directly approximated in a finite-element space. The resulting numerical method is efficient and easy ...
Added: November 10, 2020
Ростов н/Д, Таганрог: Издательство Южного федерального университета, 2018.
Сборник содержит научные доклады, представленные на XIX Международную конференцию «Современные проблемы механики сплошной среды» (Ростов-на-Дону, 15–18 октября 2018 г.).В сборнике представлены результаты исследований по моделированию деформирования тел из физически и геометрически нелинейных материалов, по устойчивости движений вязкой жидкости, аэрогидродинамике, описаны новые вычислительные технологии применительно к различным задачам механики, в частности, в механике контактных взаимодействий и ...
Added: February 27, 2020
Zakhariev I., Procedia Manufacturing 2019 Vol. 37 P. 85–90
Superplastic Forming is an industrial process to produce thin-walled products of complex shape. At the same time this process allows one to obtain the products with close to uniform thickness distribution. The process exploits the abilities of some polycrystalline materials to large elongations before failure. The best formability can be achieved only under very specific ...
Added: February 4, 2020
Zakhariev I., Aksenov S. A., Journal of Chemical Technology and Metallurgy 2017 Vol. 52 No. 5 P. 1002–1007
Free bulging process is an experimental technique which can be used to characterize a sheet material in conditions of biaxial tension during hot forming. Analytical and semi-analytical models of this process are usually based on the hypothesis offering certain relations between the geometrical characteristics of a bulge during forming. The paper presents an original relation ...
Added: December 11, 2016
Erokhina O., В кн.: Материалы Всероссийской научной школы-конференции "Механика предельного состояния и смежные вопросы" , посвященной 85-летию профессора Д. Д. Ивлева (Чебоксары, 15–18 сентября 2015 г.): в 2 ч.Ч. 1.: Чебоксары: Чувашский государственный педагогический университет им. И. Я. Яковлева, 2015.
Melting probe is a probe that designed to melt through deep icy layer to study subsurface area. The paper considers an example of technique application to simulate melting probe's motion with following assessment of a melting probe's temperature influence on its penetration velocity. ...
Added: October 12, 2015
Чебоксары: Чувашский государственный педагогический университет им. И. Я. Яковлева, 2015.
Сборник включает материалы Всероссийской научной школы-конференции "Механика предельного состояния и смежные вопросы" , посвященной 85- летию профессора Д. Д. Ивлева, состоявшейся 15–18 сентября 2015 г. в ЧГПУ им. И. Я. Яковлева при финансовой поддержке Российского фонда фундаментальных исследований (проект № 15-31-10361 мол_г). ...
Added: October 12, 2015
Chumachenko E., Олесов Е. Е., Bober S. A. et al., Российский стоматологический журнал 2015 Т. 19 № 2 С. 4–5
Discusses the selection o f the design o f circuits fo r performing a large number o f calculations the selection ofdental orthopedic
treatment. It is shown that the segment o f the upper molar is possible to study such artificial inclusions, as ceramic inlays, with
the same degree o f reliability, as well as throughout the ...
Added: July 20, 2015