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Forecasting the residual stress components in wires using an artificial neural network
International Journal of Advanced Manufacturing Technology. 2025. Vol. 141. P. 1847–1858.
In this paper, a computer simulation of round wire drawing processes with different equations of state for steel A12 has been carried out. In addition, the methods of improving the configuration of neural networks based on a multilayer perceptron (MLP) for estimating the distributions of residual stress tensor components have been investigated. The study demonstrated that the strain rate exerted a significant influence on the character of the processes, particularly within the central region () of the investigated specimens. In addition, the employment of software tools for the purpose of tuning the hyperparameters of trained machine learning models, including Optuna, BayesianOpt, and Skopt, has been demonstrated to enhance the predictive capability of the models. Consequently, this results in an improvement in the accuracy of the obtained distributions of the required characteristics.
Language:
English
Merzlinkin V., Khmelev A. V., Севрюков Д. О. et al., St. Petersburg Polytechnical University Journal: Physics and Mathematics 2025 No. 3 P. 205–209
Laser communication using satellites represents a promising avenue for data transmission in geographically distant areas without advanced infrastructure. This approach is characterized by its high transmission rate and low power requirements, providing substantial benefits over optical fiber and radio communication. However, the optical channel should exhibit greater transparency for light transmission, resulting in a severely restricted application of this technique for information ...
Added: October 5, 2026
Дуплинский А. В., Khmelev A. V., Бахшалиев Р. М. et al., St. Petersburg Polytechnical University Journal: Physics and Mathematics 2026 Vol. 17 No. 3 P. 88–92
Quantum key distribution via satellites enables the technology to be applied attranscontinental scale; nevertheless, in contrast to fiber systems, using a free-space opticalcommunication channel presents certain extra technological obstacles. The contribution of theacquisition, pointing and tracking system’s operation to the potential quantum bit error valueis investigated in this research. The polarization extinction ratio measurements varying ...
Added: October 5, 2026
Miller A., Pismeniuk L., Дуплинский А. В. et al., EPJ QUANTUM TECHNOLOGY 2023 Vol. 10 No. 1 P. 52–72
A satellite-constellation based global quantum network could allow secure quantum
communication between remote users worldwide. Such a constellation could be
formed of micro- or even nanosatellites, which have the advantage of being more
cost-effective than larger expensive spacecrafts. At the same time, the features of
quantum communication impose a number of technical requirements that are more
difficult to meet when ...
Added: October 5, 2026
Ekaterina D. Riumina, Klink G. V., Alekseeva E. et al., PNAS, США 2026 Vol. 123 No. 35 P. 1–20
The role of escape from the cytotoxic T cell (CTL) response in SARS-CoV-2 evolution remains controversial. Here, we study the origin and spread of SARS-CoV-2 variants whose mutations reduce presentation by the HLA class I alleles common in human populations. We find that 35% of mutations that are characteristic of the variants of concern, and ...
Added: October 2, 2026
Le M. T., Шукуров И. С., Курск: Закрытое акционерное общество "Университетская книга", 2026.
This monograph studies the thermal characteristics of urban habitats and analyzes the impact of urban morphology on the emergence of urban heat island effects (UHI), particularly in the context of high-density urban development, modern high-rise buildings and related sanitary standards. It presents comprehensive findings from theoretical and empirical research focused on minimizing the urban heat ...
Added: September 30, 2026
Starodubov K., Елистратов А. А., Громов Ю. Ю. et al., ИД Академии Жуковского, 2026.
The textbook is intended for preparing and completing practical assignments on biometric identification and the protection of biometric data. The theoretical part briefly presents the information required for the practical work: basic concepts and quality metrics, voice and facial modalities, regulatory framework and the Unified Biometric System, the mathematical foundations of template protection, and the ...
Added: September 19, 2026
Богданчиков И. Ю., Бачурин А. Н., Есенин М. А. et al., Достижения науки и техники АПК 2026 Т. 40 № 6 С. 73–80
The studies were conducted with the aim of theoretically and experimentally justification the parameters of a levelling device with adjustable depth to improve the uniformity of the chopper rotor loading and the quality of straw distribution in the MDUS-2.3 unit. The optimal angle at the apex of the isosceles triangular profile of the levelling device of 90° ...
Added: September 17, 2026
Кузнецов М. Е., Полякова М., Лукьянович В. et al., ФАНУ "Востокгосплан", 2026.
Обзор международных практик развития робототехники и искусственного интеллекта и оценка возможностей их применения в условиях России, в первую очередь для Дальнего Востока и Арктической зоны РФ ...
Added: September 16, 2026
Starodubov K., Кривоногов А. А., Плоткин А. С. et al., Нано-био-технологии. Тепло- и электроэнергетика. Математическое моделирование: сборник статей III международной научно-практической конференции (Липецкий государственный технический университет, Липецк, Россия) 2025 С. 300–309
The paper considers the problem of assessing the criticality of defects in smart contracts, defines the constituent parameters of criticality of defects and substantiates their representation in the form of LR-type fuzzy numbers. An approach based on the use of LR-type fuzzy numbers and nonlinear optimization methods is proposed to assess the criticality of defects ...
Added: September 7, 2026
Starodubov K., Гвасалия Г. В., Карасев П. И., Нано-био-технологии. Тепло- и электроэнергетика. Математическое моделирование: сборник статей III международной научно-практической конференции (Липецкий государственный технический университет, Липецк, Россия) 2025 С. 219–223
This paper discusses the concept of neural networks, convolutional neural networks, their architecture and their operation principle. The main attention is paid to testing the reliability of storing images of people as embeddings, which are considered to be unrecoverable in the original image. In the course of the research an experiment is carried out: the ...
Added: September 6, 2026
Шейкин В. В., Starodubov K., Карасев П. И., XXI век: итоги прошлого и проблемы настоящего плюс 2026 Т. 15 № 2(74) С. 20–25
The paper addresses the problem of formalized description of intruder behavior in government information systems. An approach based on hidden Markov models is proposed for modeling the actions of an intruder, where the stages of malicious activity are interpreted as hidden states and the events registered by the system are treated as observable symbols of ...
Added: September 6, 2026
Максимова Е. А., Утешева Г. Ш., Громов Ю. Ю. et al., Научно-аналитический журнал "Вестник Санкт-Петербургского университета Государственной противопожарной службы МЧС России" 2026 № 2 С. 92–103
When data are incomplete, standard fuzzy data mining methods face an unacceptable trade-off: deleting objects with missing values loses up to a third of the sample and introduces systematic bias under the MAR mechanism, while mean imputation destroys the covariance structure and produces rules with artificially inflated support. This paper proposes a different solution - ...
Added: September 6, 2026
Bubnova M., Chetverikov V., Pozhidaev E., Информационные технологии 2026 Т. 32 № 8 С. 404–413
A specialized methodology was developed, computer modeling was conducted, and a comparative analysis was performed for autonomous control methods for small spacecraft, differing in how the nonlinearity of the initial stabilization problem is taken into account:
— control constructed using a system of linear differential equations (SLDE);
— control constructed using SLDE applied to a more general ...
Added: September 2, 2026
Шейкин В. В., Starodubov K., Безопасность. Управление. Искусственный интеллект 2026 Т. 3 № S3 С. 47–57
The article proposes a formal apparatus for risk analysis in information systems based on the apparatus of fuzzy logic, graph theory and matrices. A system of definitions is introduced that includes a universe of entities, sets of violators and destructive influences, as well as membership functions describing the fuzzy relationships between them. A risk calculation ...
Added: August 29, 2026
Воронеж: Издательский дом ВГУ, 2026.
В сборник вошли материалы XXXII Международной научно-технической конференции «Радиолокация, навигация, связь» (RLNC*2026), прошедшие ре цензирование членами программного комитета конференции. Основной целью конференции является организация взаимодействия научных и научно технических коллективов для обмена опытом и новыми творческими успехами. Достижение этой цели также способствует внедрению перспективных разрабо ток, имеющих практическое значение для дальнейшего развития промышленно сти, экономики ...
Added: August 29, 2026
Romanov A., Физулин А. В., Stepanyants V., Московский транспорт. Наука и проектирование 2026 № 2 С. 77–90
The behaviour of connected automated vehicles in implementing cooperative safety functions
depends on the timely exchange of V2X messages. At the same time, the end-to-end impact of 5G NR-V2X
Mode 2 message delivery failures on vehicle behaviour requires evaluation not only by aggregated network
metrics but also by the timeliness of V2X message arrival within the time window ...
Added: August 25, 2026
Волчкова Е. А., Легкова К. С., Минушкина Л. О. et al., Российский кардиологический журнал 2026 Т. 31 № 8S Статья 6987
Goal. To assess the contribution of polygenic risk scores to the short‑term mortality prediction model in patients with dilated cardiomyopathy (DCM).
Materials and methods. The study included 137 patients with DCM. The mean age was 56.8 ± 13.5 years; there were 115 men (83.9 %). The median follow‑up period was 17 [13; 22] months. During the follow‑up period, 26 ...
Added: August 24, 2026
Белгородский государственный технологический университет им. В.Г. Шухова, 2026.
В сборнике опубликованы доклады студентов, аспирантов и молодых ученых, представленные по результатам проведения Международной научно-технической конференции молодых ученых БГТУ им. В.Г. Шухова. Материалы статей могут быть использованы студентами, магистрантами, аспирантами и молодыми учеными, занимающимися вопросами энергоснабжения и управления в производстве строительных материалов, архитектурных конструкций, электротехники, экономики и менеджмента, гуманитарных и социальных исследований, а также в ...
Added: August 19, 2026
Междуреченск: Кузбасский государственный технический университет им. Т.Ф. Горбачева, 2026.
В сборнике представлены материалы докладов по направлениям Международной научно-практической конференции «Современные тенденции и инновации в науке и производстве»: 1. Технологии и инновации в горной промышленности; 2. Экономика, управление, финансы; 3. Информационные системы и технологии; 4. Юный исследователь. Целью этой конференции является обмен передовым опытом, повышения квалификации их участников и, вместе с тем, это способ установления и укрепления научного сотрудничества среди ...
Added: August 11, 2026
Mikolaenko V., Анохин В. В., Кудряшов М. Д., В кн.: Межвузовская научно-техническая конференция студентов, аспирантов и молодых специалистов имени Е.В. Арменского. Материалы конференции.: М.: МИЭМ НИУ ВШЭ, 2022.
Сверхпластическая газовая формовка – это один из способов обработки материалов давлением, используемый при производстве тонкостенных изделий сложной геометрической формы. Для проектирования технологических режимов производства таких изделий используется компьютерное моделирование технологического процесса, для которого необходимо задать свойства материала. Основной экспериментальный метод исследования свойств сверхпластичных материалов – одноосное растяжение плоских образцов с постоянной скоростью деформации. Однако, стандартная ...
Added: December 12, 2024
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
Razorenova A., Yavich N., Malovichko M. et al., , in: Machine Learning in Clinical Neuroimaging and Radiogenomics in Neuro-oncology. Third International Workshop, MLCN 2020, and Second International Workshop, RNO-AI 2020. Lecture Notes in Computer ScienceVol. 12449: Machine Learning in Clinical Neuroimaging and Radiogenomics in Neuro-oncology.: Springer, 2020. Ch. 5 P. 45–55.
Electroencephalography (EEG) is a well-established non-invasive technique to measure the brain activity, albeit with a limited spatial resolution. Variations in electric conductivity between different tissues distort the electric fields generated by cortical sources, resulting in smeared potential measurements on the scalp. One needs to solve an ill-posed inverse problem to recover the original neural activity. In this article, ...
Added: December 10, 2020
Razorenova A., Yavich N., Malovichko M. et al., / Series 005140 "Biorxiv". 2020.
Electroencephalography (EEG) is a well-established non-invasive technique to measure the brain activity, albeit with a limited spatial resolution. Variations in electric conductivity between different tissues distort the electric fields generated by cortical sources, resulting in smeared potential measurements on the scalp. One needs to solve an ill-posed inverse problem to recover the original neural activity. ...
Added: November 10, 2020
Demin D., Procedia Manufacturing 2019 No. 37 P. 335–340
Residual stresses arising in the drawing process have a significant impact on the quality of the cold-drawn wire. Knowledge of residual stresses and their distribution makes it possible to predict the behavior of metal products under operating loads and to prevent their possible destruction. In this regard, it is necessary to adjust the main parameters ...
Added: February 4, 2020