bluuebunny/crossref_metadata_2025_split huggingface dataset:
АНАЛИЗ СХОДИМОСТИ МНОГОШАГОВОГО МЕТОДА КОЛЛОКАЦИИ ДЛЯ РЕШЕНИЯ ОБОБЩЕННЫХ ИНТЕГРАЛЬНЫХ УРАВНЕНИЙ АВТОСВЕРТКИ ВОЛЬТЕРРА
Authors: ДАРАНИЯ П. , ПИШБИН С. , ЭБАДИ А. 
Published: October 2024

В этом исследовании мы вводим многошаговые методы коллокации (МШМК) для решения интегральных уравнений Вольтерра (ИУВ) типа автосвертки, такие что без увеличения вычислительных затрат порядок сходимости предлагаемых одношаговых методов коллокации будет увеличен. Анализ сходимости МШМК исследуется с использованием теорем Пеано для интерполяции, и приводятся два численных примера для демонстрации значительного преимущества МШМК.
In this study, we introduce multi-step collocation methods (MSCM) for solving the Volterra integral equation (VIE) of the auto-convolution type such that without increasing the computational cost, the order of convergence of the proposed one-step collocation methods will be increased. A convergence analysis of the MSCM is investigated using the Peano theorems for interpolation and, finally, two numerical examples are introduced to clarify the significant advantage of the MSCM.
КЛАССЫ ПСЕВДОПЕРЕСТАНОВОЧНОСТИ КОМПЛЕКСНЫХ МАТРИЦ И ИХ ОВЕЩЕСТВЛЕНИЕ
Authors: ИКРАМОВ Х.Д. 
Published: October 2024

Отношение между комплексными матрицами H и A, выражаемое равенством H A = ĀH , называется псевдоперестановочностью. Совокупность SH всех A, псевдоперестановочных с невырожденной n × n-матрицей H, называется классом псевдоперестановочности, определяемым этой матрицей. Всякий класс SH является подпространством пространства Mn(C), рассматриваемого как вещественное векторное пространство размерности 2n2. В предположении dimR SH = n2 найдено необходимое и достаточное условие для того, чтобы все матрицы из SH могли быть овеществлены одним и тем же подобием.
The relation between complex matrices H and A, given by the equality H A = ĀH is called the pseudo-commutation. The set SH of all A that pseudo-commute with a nonsingular n × n matrix H is called the pseudo-commutation class defined by H . Every class SH is a subspace of the space Mn(C) interpreted as a real vector space of dimension 2n2. Under the assumption dimR SH = n2, we find a necessary and sufficient condition for the possibility to decomplexify all the matrices in SH by one and the same similarity transformation.
ВЫЧИСЛЕНИЕ ФУНКЦИИ ПЛОТНОСТИ РАСПРЕДЕЛЕНИЯ ВЕРОЯТНОСТИ ФАЗ НА ОСНОВЕ РЕШЕНИЯ ОБРАТНОЙ ЗАДАЧИ
Authors: МАСЛАКОВ М.Л. , ЕГОРОВ В.В. 
Published: October 2024

В работе рассматривается задача вычисления плотности распределения вероятности фазы сигнала с фазовой манипуляцией, принимаемого в условиях искажений и аддитивного шума. Данная задача сводится к решению обратной задачи, а именно интегральному уравнению типа свертки. В работе проанализированы функции, входящие в интегральное уравнение. Отдельно рассмотрен важный с практической точки зрения случай равновероятных фаз символов. Представлены результаты численного моделирования.
The article considers the problem of calculating the phase probability density function of a phase-shift keying signal received under conditions of distortion and additive noise. This problem is reduced to an inverse problem, namely, to solving an integral equation of the convolution type. The functions included in the integral equation are analyzed. The case of equiprobable symbols, which is important from a practical point of view, is considered separately. Numerical simulation results are presented.
АЛГОРИТМЫ СТОХАСТИЧЕСКОГО МОДЕЛИРОВАНИЯ ДЛЯ ИТЕРАЦИОННОГО РЕШЕНИЯ УРАВНЕНИЯ ЛАМЕ
Authors: АКСЮК И.А. , КИРЕЕВА А.Е. , САБЕЛЬФЕЛЬД К.К. , СМИРНОВ Д.Д. 
Published: October 2024

В статье построены итерационные алгоритмы стохастического моделирования для решения системы уравнений Ламе, описывающей смещения изотропного упругого тела. Предложено три различных стохастических метода. Первый основан на глобальном алгоритме блуждания по сферам для вычисления решения и производных для анизотропного уравнения диффузии. Он является бессеточным и не требует большой оперативной памяти. Второй метод основан на рандомизированном алгоритме для решения больших систем линейных уравнений и требует введения сеток. Третий метод также является сеточным, он использует алгоритм случайного блуждания по сетке. Все три метода реализуют итерационный процесс, на каждом шаге которого решаются уравнения анизотропной диффузии. В работе проводится сравнительный анализ предложенных методов и обсуждаются границы применимости каждого из них.
In this paper, iterative stochastic simulation algorithms for the Lamè equation describing the displacements of an isotropic elastic body are constructed. Three different stochastic methods are proposed: the first one is based on a global algorithm of random walk on spheres to compute the solution and its derivatives for an anisotropic diffusion equation. It does not use grids and does not require large amounts of RAM. The second method is based on a randomized algorithm for solving large systems of linear equations and requires the introduction of a grid. The third method is also grid-based and uses a random walk algorithm. All three methods implement an iterative process, at each step of which anisotropic diffusion equations are solved. The paper provides a comparative analysis of the proposed methods and discusses the limits of applicability of each of them.
Assessment of sweet whey fortified with Bifidobacteria and selenium on reduction of pesticide liver toxicity in albino rats
Authors: M.S. Moawad Raghda , H.A. Osman Ali , M.A. Hassanein Khaled , F. Elkot Wael , Mahmoud Asar Ahmed , Alhag Sadeq K. , Al-Shuraym Laila A. , Alghamdi Othman A. , AL-Farga Ammar , T. Zaidalkilani Ayah , M. Hassan Hanaa 
Published: October 2024

Deltamethrin (DLM) represents one of the most commonly used pesticides. It passes through milk, vegetables, and fruits to humans or through animals (veterinary drugs and feeding on contaminated forage) to milk; it can escape from skin to blood and be secreted in breast milk in lactating women. It is believed to have neurotoxic, nephrotoxic, and hepatotoxic properties. To investigate deltamethrin-induced hepatotoxicity, 64 rats were divided into eight groups. The control group did not receive any treatment. The groups were as follows: D 30 mg DLM/kg body weight (BW) dissolved in corn oil; B 1 mL whey (1010 cfu/mL of Bifidobacterium longum ATCC 15707); S 1 mL whey (0.5 ppm selenium); BS 1 mL whey (1010 cfu/mL of B. longum ATCC 15707 + 0.5 ppm selenium); BD 1 mL whey (1010 cfu/mL of B. longum ATCC 15707 + DLM); SD 1 mL whey (0.5 ppm selenium) + DLM; and BSD 1 mL whey (1010 cfu/mL of B. longum ATCC 15707) + 0.5 ppm selenium + DLM. Results revealed that the manipulation of Bifidobacteria with selenium triggered a significant improvement in AST (U/mL), ALT (U/mL), GSH (mg/g), TNF-α (pg/mL), NF-κB (ng/mL), and BCL2 (ng/mL) from 166.7 ± 6.42, 30.67 ± 0.55, 0.252 ± 0.005, 17.18 ± 0.42, 1.14 ± 0.10, and 1.77 ± 0.06 versus 334.9 ± 4.7, 72.83 ± 2.49, 0.108 ± 0.005, 33.57 ± 0.59, 2.58 ± 0.05, and 1.04 ± 0.04, respectively, compared to DLM group. As well as reduction in histopathological necrosis, congestion, and degradation. Whey beverages fortified with B. longum and selenium implicated a reduction in oxidative stress and histopathological degradation that accomplished DLM toxicity. The utilization of whey (a byproduct of cheese making) is considered a recycling process that supports eco-friendly practices and sustainability, thus encouraging its use as a protective tool in animal feed or manipulation by humans, especially workers in pesticide plants.
Productividades de los conflictos ambientales en los sistemas partidarios subnacionales (Río Negro y Chubut, Argentina, 2017-2021)
Authors: Pesquero-Bordón Jimena 
Published: October 2024

Introducción: este artículo analiza las productividades político-institucionales de los conflictos ambientales sobre las dinámicas de los sistemas partidarios subnacionales en Argentina mediante dos estudios de casos: las resistencias sociales a la instalación de una central nuclear en Río Negro (2017-2019); y las resistencias sociales a la zonificación minera en Chubut (2019-2021). Objetivo: indagar sobre la dimensión partidaria y electoral de los conflictos ambientales subestimada por la literatura tanto politológica como sociológica. Esta contribuiría a una agenda integral para el estudio de las políticas ambientales en la región para producir protección ambiental y estimular innovaciones en la gobernanza ambiental. Metodología: se propone una estrategia teórico-metodológica de abordaje de los casos situada, interdisciplinaria y pragmatista. Este abordaje permite estudiar la coordinación de la estructura de la competencia partidaria y electoral, segmentada territorialmente, y las estrategias de los actores. Conclusiones: se argumenta que hay que explicitar la dimensión multiescalar inherente a este proceso complejo y, a su vez, considerar las características ambientalizadas de la estructura de conflicto social y su impacto en las dinámicas partidistas y electorales. Por lo que la estrategia propuesta pondera el análisis escalar de los efectos político-institucionales de la conflictividad ambiental para la construcción de los casos.
Analysis of methotrexate use practice in patients with rheumatoid arthritis and psoriatic arthritis
Authors: Doktorova S. A. , Grabovetskaya Yu. Yu. , Zuev A. V. , Aksenova-Sorokhtei J. N. , Rafalskiy V. V. 
Published: October 2024

Background. Pharmacoepidemiological studies play a key role in optimizing pharmacotherapy for various diseases. In particular, significant progress in the treatment of rheumatoid arthritis (RA) and psoriatic arthritis (PsA) necessitates a detailed analysis of the consumption of disease-modifying antirheumatic drugs. The modern therapeutic concept for these conditions focuses on achieving and maintaining long-term remission, which positions methotrexate (MTX) as a first-line agent, characterized by high effectiveness, safety and advantageous pharmacoeconomic profiles.Objective: to investigate the characteristics of MTX use in real clinical practice among patients with RA and PsA during outpatient medical care.Material and methods. The study comprised two parts: a retrospective cross-sectional analysis of MTX consumption dynamics in 2018, 2020, and 2023 via ATC/DDD (Anatomical Therapeutic Chemical classification, ATC; defined daily dose, DDD) methodology, and a longitudinal non-interventional pharmacoepidemiological study conducted in 2023 using the medical information system “BARS. Healthcare”.Results. The ATC/DDD analysis demonstrated a significant increase in MTX consumption among patients with RA and PsA: from 302,428.6 to 319,114.3 DDDs per 1,000 patients per year for RA, and from 28,157.1 to 310,771.6 DDDs per 1,000 patients per year for PsA in 2018 and 2023, respectively. The most frequently prescribed dose of MT was 15 mg/week. The primary therapeutic combination for 55.8% of patients was “MT + nonsteroidal anti-inflammatory drugs”, with 32.7% of patients also receiving glucocorticoids (GCs) as part of this combination. The study identified a high frequency of prescriptions for proton pump inhibitors, GCs, and cholecalciferol, highlighting the activity of diseases under consideration, potential complications, and the necessity for the prevention of clinically significant drug interactions.Conclusions. The conducted study confirmed that MTX remains the main drug for the treatment of RA and PsA. The ATC/DDD analysis demonstrated a significant increase in MTX consumption in recent years, correlating with its therapeutic effectiveness and accessibility. The high frequency of concomitant prescriptions underscores the complexity of treating RA and PsA and the need for an interdisciplinary approach to ensure safety and efficacy of the therapy.
Artificial intelligence and adolescents’ socialization: risks of influence
Authors: Khodaev A. S. , Makarova L. N. 
Published: October 2024

Importance. To date, there is an active introduction of artificial intelligence into all spheres of human activity, leading to significant changes in the factors that influence the socialization of the younger generation. Along with this, smart devices have also begun to act as agents of socialization for modern teenagers, with whom they interact both in educational and extracurricular settings. In this regard, the scientific and pedagogical community is interested in identifying both the positive and negative aspects of AI’s influence on the formation of the social experience of minors. The aim of the study is to examine the features and analyse the risks associated with the artificial intelligence impact on the adolescents’ socialisation.Research Methods. The work is based on a comprehensive review of psychological, pedagogical, legal, sociological, scientific, and technical literature on artificial intelligence the introduction in various fields of human activity, particularly in the education sector. The study is grounded in personal-activity, multi-subject, and environmental perspectives, which allowed for the synthesis and analysis of relevant information, as well as an assessment of the potential risks associated with the artificial intelligence influence on the positive socialization process of school students. Within these frameworks, several research methodologies are employed, including analysis, comparison, generalization, systematization, and structured information organization.Results and Discussion. The main areas of artificial intelligence application in education are: adaptive learning, automated assessment, examination management, personalized learning, customized educational materials creation, consultation and recommendation systems, gaming and virtual reality, extending the range of opportunities for students with special needs, and monitoring student engagement in learning. However, along with the potential benefits of introducing AI technologies into the adolescents’ cognitive development, there are several risks associated with the intelligent devices’ use: a potential decrease in the education quality, challenges with social skills and self-regulation development, value orientation, adaptation, and self-regulatory resources. Additionally, there is a risk of subjectivity loss, the formation of an unrealistic self-image, aggressive behavior, and the development of digital autism and information pseudoliteracy.Conclusion. Based on the analysis, it is revealed that the artificial intelligence influence on modern adolescents can be traced not only in changing the educational process of the school, which is a factor and institution of socialization, but also in the direct interaction between a minor and a smart device. At the same time, this process has both positive and negative aspects, the consideration and correction of which is necessary when introducing artificial intelligence into education and other spheres of human activity and society.
The role of the child-adult community in the development of adolescents’ meaning of life
Authors: Sorokin N. S. 
Published: October 2024

Importance. The search for the meaning of life is a relevant issue during adolescence. A childadult community plays an important role in the development of meaning of teenagers’ lives by providing support, participation in social events, role models, and opportunities for selfrealization. Interacting with adult members of the community contributes to the development of value orientations among adolescents, the establishment of individual personal and professional goals, and provides support in the search for meaning of life. The purpose of the study is to identify the specific role of the child-adult community in the development of adolescents’ meaning of life.Materials and Methods. Analysis of Russian and foreign literature, conducting a survey among adolescents, conducting interviews and observations, as well as statistical processing of the results are used.Results and Discussion. It has been established that in developing the meaning of life, child-adult communities play the role of creating a supportive and emotionally favourable environment, mentoring and role models, and so forth. However, not all of the roles are fulfilled by the community equally. To increase the effectiveness of the child-adult community in matters of meaningful selfdetermination of adolescents, a programme of activities aimed at compensating for the lack of community work is developed.Conclusion. The study will help educational and social institutions to develop effective strategies and programmes of pedagogical support for adolescents, which may become an object of future research.
Social and pedagogical assistance to adolescents with intellectual disabilities
Authors: Begidova T. P. , Malysh E. Yu. 
Published: October 2024

Importance. One of the pressing problems of correctional psychological and pedagogical assistance to children with intellectual developmental disabilities is the possibility of early initiation of correction and the choice of effective correctional and developmental methods for the purpose of their maximum socialization. Purpose of the study: orrectional and developmental activities introduction into adaptive physical education classes to increase the social adaptation level of adolescents 14–15 years old with mild mental disability.Materials and Methods. 20 teenagers aged 14–15 years with mild mental disability, studying in a correctional school of type VIII, took part in the pedagogical experiment. Two groups are formed: a control group, studying according to a standard program for people with disabilities, and an experimental group, in which, as part of pedagogical control, 30 correctional and developmental classes, 30 minutes each, are conducted 1–2 times a week, as part of adaptive physical education classes. The tools for assessing the effectiveness of the correctional classes are: determination of the group cohesion index using K.E. Sishor’s psychometric test, determining the aggressiveness level using Bass–Darki’s questionnaire, assessing communication skills using B.A. Fedorishin’s assessment.Results and Discussion. Corrective and developmental activities carried out during adaptive physical education classes had a positive impact on the communication abilities development in adolescents aged 14–15 years with mild mental disability. After conducting a pedagogical experiment, adolescents in the experimental group significantly improved the average diagnostic test scores (p ˂ 0.05) on the following tests: K.E. Sishor’s psychometric test, B.A. Fedorishin’s communicative inclinations assessment, Bass–Darki’s questionnaire.Conclusion. The introduction of developed correctional and educational activities into the adaptive physical education classes program made it possible to increase the social adaptation level of adolescents 14–15 years old with mild mental disability.
The French-language translated book of Russia of the second third of the 18th century: features of the repertoire and importance for book culture
Authors: Topilsky A. G. 
Published: October 2024

Importance. The beginning of the process of interaction between Russian and French book cultures was laid by the era of the Europeanisation of Peter I. The Russian autocrat tirelessly sought to bring his country among the leading countries of the world, to smooth out the difference between Russia and the West. The nobility, the most educated stratum of society at that time, was to become the main conductor of the reformer’s advanced aspirations. The aim of the research is to study the significance for the Russian book culture of the French–language translated book of the second third of the 18th century.Materials and Methods. The comparative historical method makes it possible to establish the correlation of the role of French literature in the distribution of printed materials in the Russian Empire. The use of the comparative analysis method, which made it possible to comprehensively study the role of foreign literature in the bookselling process in the Russian Empire of the 18th century, plays an important role in the study.Results and Discussion. The inclusion of a work in the publishing list was conditioned by the community demand, which allows us to speak about the development of the book culture of Russia in the second quarter of the 18th century. In order to capture readers’ mood better, the specialists of the Academy of Sciences found out the specialists’ opinion about publications.Conclusion. By the middle of the 18th century, the Academy of Sciences had prepared translations of valuable treatises on history, literature, mathematics, psychology and pedagogy, enriching Russian book culture with advanced European bestsellers. This period of the Academy’s activity should be regarded as a new stage in the development of book printing in Russia, which created significant prerequisites for the rapid rise of interest in French culture in the second half of the 18th century.
Censorship of Agitprop in the Upper Volga press in the 1920s
Authors: Assonov A. V. 
Published: October 2024

Importance. The censorship of periodicals in the Upper Volga region during the New Economic Policy years is considered. The research of Soviet propaganda remains relevant in the context of studying the history of the USSR, political communication and mass media. Even in modern Russia, there is a request for the development of a cultural level using the mass media, in the implementation of which the experience of a century ago can help. The purpose of the research is to examine the mechanism for implementing the censorship policy of the Soviet state in the Upper Volga region using the example of the work of agitprop.Materials and Methods. Methods of system analysis, principles of historicism and scientific objectivity are used. The archival materials stored in the Russian State Archive of Socio-Political History are used.Results and Discussion. The country needed urgent and fairly profound cultural changes, and this had to be done not only by methods of combating illiteracy, but also by propaganda, including in the periodical press. Newspapers are a cheap and easy way to disseminate information, but in an illiterate country it is not very easy to use. The party’s propaganda department had to deal with this phenomenon.Conclusion. Conclusions about the significant intervention of the Agitprop department in regional periodicals in order to form an ideologically correct understanding of the world and the political situation in the country are formulated.