bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of data models in power grids for loss reduction and disaster anticipation
Authors: Nusipova Fariza , Kartbayev Amandyk
Published: December 2023

This paper addresses the critical objective of optimizing power flow within a region, particularly focusing on the Mangystau region, amidst evolving energy demands and the integration of renewable resources. The escalating challenges associated with maintaining both system stability and economic viability underscore the significance of this research, as suboptimal power flow conditions can exacerbate climate change. To expedite the solution to the optimal power flow problem, machine learning algorithms are explored. Initially, load data from the region is analyzed, and various supervised learning algorithms are tested using simulation data to predict power flow patterns. The primary concern in the Mangystau region lies in the aging infrastructure of oil companies, which operates under suboptimal conditions. This study employs neural networks in Matlab to simulate the electrical system’s parameters, unveiling the intricate relationship between optimal system parameters and those of the examined system. Comparing these results with analytical grid modeling, the study reveals that system optimization aligns with target values, particularly concerning optimal receiver replacement schemes.
Dynamic method for measuring thermal characteristics of heating devices
Authors: Abramchuk Stanislav , Pugovkin Alexey , Kuprekov Stepan , Stepnoy Victor
Published: December 2023

The central aim of this work is to find a way to know out the heat capacity, which is an inertial characteristic of a heating device. The thermal lag in heating devices is a factor considered in automated systems of indoor climate control. The suggested method to calculate the heat capacity is based on the differential heat-balance equation for the heating device. According to the balance equation, the method comes down to the comparative analysis of thermal and power characteristics of the heating device at different values of the temperature drop (the difference between the average temperature on the surface of the heater and the average room air temperature). The work provides a description of the experimental equipment that can be used to implement the given method, as well as the technique to conduct experiments. Power and temperature characteristics were taken three times, and the results were averaged. The values of the device’s heat capacity were obtained from the averaged characteristics against the six values of the temperature drop. The average heat capacity was calculated and compared with the theoretical value, the deviation was equal to 1.63 %. The method developed offers the advantage of being able to determine the heat capacity of any type of heating device, taking into account their inherent characteristics, including those gained during their lifetime.
Application of the private-public partnership model in energy sector
Authors: Gorodnova Natalia
Published: December 2023

The best international practices in implementing investment energy-efficient projects show that the most effective form of implementing industrial, infrastructure and socially important projects and programs is the public-private partnership (PPP). The purpose of the study is to analyze the current situation and prospects for using hydrogen fuel in the process of energy transition in order to solve environmental problems and overcome the energy crisis within the framework of public-private partnership (PPP). The study is novel in that the prospects for the development of hydrogen energy are predicted on the basis of the international and Russian practices; an approach to forming the Dynamic model of sustainable economic development: Smart Green Technology application within the framework of public-private partnership (PPP); considered the main provisions of the Development Concept Hydrogen technologies in the Republic of Tatarstan, approved by the order of the Cabinet of Ministers of the Republic of Tatarstan in 2023; an approach to the formation of matrix for energy efficiency management which is the goal of further research.The hypothesis about the effectiveness of public-private partnership as an instrument of green energy in Russia within the framework of developing direct conversion technologies and modernizing the energy sector when implementing national projects was confirmed in the course of the study.
Distribution of the temperature in friction stir welding of aluminum and copper alloys
Authors: Rzaev Radmir , Sundetov Marat , Valisheva Alfiya , Derzhavin Igor , Merkulov Denis
Published: December 2023

Friction stir welded are studied joints of pure copper M1 and aluminum alloy AD1. A technique for measuring the temperature was developed at the points of the weld. The results of measurement temperature are given in friction stir welding at various speeds of rotation of the welding tool (800-1000 rpm), welding speed (25-61 mm/min). The temperature reached in copper is about 60 K higher than in aluminum. The higher cooling rate of copper is due to the greater thermal diffusivity than that of aluminum. The maximum temperature in the copper reached 769 K, which was lower than the melting point of the eutectic in the Al-Cu system (821 K). The residence time above the temperature of formation of intermetallic compounds (623 K) is much shorter than the duration of the thermal cycle (50 s). With an increase in the welding tool rotation frequency from 800 to 1000 rpm, the maximum temperature near the pin increases from 650 to 769 K. At a tool rotation frequency of 800 rpm, the maximum temperature in copper achieved in the cycle is lower than the transition temperature to the superplastic state and is 764 K high heating and free cooling rates (50–145 K/s and 25–50 K/s) of the weld on the side of the copper alloy predetermine the short-term (from 5 to 15 s) stay of the metal in the temperature range of formation of intermetallic phases.
Comparative analysis of wear resistance of thermodiffusion coatings obtained using the HFC melting method
Authors: Rozhkov Yuri
Published: December 2023

When using HFC welding, an important problem is the selection of a suitable surfacing material. The main criterion for this selection is the wear resistance of the resulting coating. The higher the wear resistance, the longer the working element will last. To achieve good wear resistance, higher hardness materials are often used for surfacing. However, it is important to find a balance so that the hardness of the coating does not increase to the point where it becomes brittle. Among the coatings studied, coatings that contain boron carbide and are additionally mixed with P-0.66 powders in 10% volume and FeSi in 90% volume have the highest wear resistance. These coatings proved themselves by showing wear rates that are 18 times less than those of 65G steel in the tests. However, despite their outstanding hardness, they are very brittle and are impractical for practical applications. However, coatings consisting of boron carbide mixed with P-0.66 powders in 10% volume and FeSi in 50% volume also have excellent wear resistance. Compared to 65G steel, they have 4 times less wear, are not as brittle and can be used for hardening coatings.
Technological efficiency of mineral modifiers for cement materials with photocatalytic activity
Authors: Balykov Artemy , Nizina Tatyana , Volodin Sergey
Published: December 2023

It is known that the efficient kinds of photocatalytic additives for cement materials are “core–shell” compositions synthesized by precipitation of photocatalyst particles on mineral substrates (dispersed carriers). The study aim was to install patterns of influence of 5 mineral modifiers on the technological characteristics of cement systems with finding of the most promising raw materials for dispersed carriers of photocatalytic agents. The increased technological efficiency of silica fume, metakaolin and expanding sulfoaluminate modifier in cement paste, due to the peculiarities of their granulometric composition with high dispersity and defectiveness of particles, was revealed by the research results. It predetermines the prospects of using these mineral additives in the composition of photocatalytically active self-cleaning cement materials.
Diagnostic method for the selection of regimes of electromagnetic effect on the particulate ferromagnetic material
Authors: Egorov Ivan , Egorov Nikolay , Egorova Svetlana
Published: December 2023

The recycling of obsolete permanent magnets, the processing and reusing of the obtained powder for a new magnets production has both economic and environmental benefits. The processing of recycled magnetic slur to the particle size distribution required for the magnets production has a problem specific for fine magnetic powders – particle aggregation limiting the milling efficiency. One way of solving this problem is milling the magnetic material with the formation of the magneto fluidized bed. In the present work we study the behavior of the recycled from old electromotor stators strontium hexaferrite powders with average particle sizes 56.8 µm and 7.5 µm in the magneto fluidized bed formed by mutually perpendicular constant and alternating gradient magnetic fields. The desired state of the fluidized bed for milling is the one with the maximal particle motion intensity that prevents particle aggregation. The intensification of particle motion could be done by the increase of the alternating magnetic field gradient, but this also increases energy consumption of the process. In the present paper we propose using the inductive method for estimating rheological state of the strontium hexaferrite powder in the magneto fluidized bed. Such estimation allows finding the optimal parameters of electromagnetic fields forming the fluidized bed for the efficient powder milling process.
Finishing of aluminium alloy flat products
Authors: Leonidov P.V.
Published: December 2023

The possibility of improving the surface quality of flat products made of aluminium alloy AMc is considered by using the method of magnetic abrasive processing in the finishing stage of manufacturing. The influence of the main technological parameters of magnetic-abrasive processing, temperature factors and the composition of the cooling lubricant on the quality of the processed surface has been investigated. The results obtained from experimental studies have shown significant improvements in surface quality, which allow us to conclude on the effectiveness of the magnetic abrasive blasting method for finishing products made of the AMc aluminium alloy.
Additions of reinforced fibres in layered polymers and their effect on wear resistance
Authors: Kudryashova Elizaveta , Denisov Vyacheslav
Published: December 2023

This paper describes a study of layered polymers with the addition of reinforcing fibres. Their advantages are strength and stiffness, lightness and improved chemical resistance. The study deals with a comparative evaluation of the wear resistance of textolite with different reinforcing fibres under sliding friction conditions. A sample of the investigated material, made in the form of a disc, was fixed in the centre of the table surface and driven into rotational motion at a given frequency. A 6 mm diameter ball made of 100 Cr6 steel was used as a control sample, which was rigidly fixed in the end of a cylindrical pin (indenter). A normalised normal load was applied to the indenter, which was resting on the disc at some distance from the centre of rotation. During the tests, the coefficient of friction and the depth of penetration of the ball into the test sample were continuously measured. The tests were carried out with increasing and decreasing of the load with the interval of 2,0 N. The duration of the long-term wear tests for each sample was 21500 m of friction path (about 20 hours). The estimation of fixed changes of the friction coefficient from load at tests on wearability of couplings has been carried out. The results of tests of the investigated materials samples have shown the best indices on the intensity of wear at mating with a sample from textolite PTG compared to oxafen and Kevlar, accordingly, in 2.97 and 5.93 times.
Production of copper nanoparticles in the process of target ablation by radiation Cr3+:BeAl2O4 laser
Authors: Shepelev Aleksandr , Antipov Aleksandr , Putilov Alexey , Solokhin Sergey , Lezova Tatiyana
Published: December 2023

The work is devoted to the synthesis of nanoparticles in the process of ablation of a copper target in a liquid by repetitively pulsed laser radiation. It has been noted that nanomaterials based on certain metals have unique physical and chemical properties. This ensures their use in various applications. In particular, copper nanoparticles are successfully used in medicine and biochemistry. To carry out the synthesis of copper nanoparticles, a previously developed Cr3+:BeAl2O4 laser is used. The laser is based on a plane-parallel resonator with a dispersive prism. Using a prism, the radiation wavelength is smoothly adjusted. To carry out copper ablation, the laser generation wavelength was tuned to 740 nm. It has been shown that when a target is exposed to a microsecond laser pulse consisting of a train of short pulses, copper nanoparticles of various sizes are formed. Comparison of the results with the results of previous works shows that exposure of the target to radiation with a shorter wavelength, commensurate with the energy density of the train and similar spatial parameters leads to a decrease in the average size of the synthesized nanoparticles.
Ecological - economic factors of spare parts supply to car service centres, Republic of Cyprus
Authors: Sarbaev V.I. , Tziovannis S. , Grishin A.S.
Published: December 2023

The article considers environmental and economic factors in the models of supplying spare parts to car service centres in the Republic of Cyprus. The features of the formation of economic and environmental factors are revealed, country specifics are clarified. Based on the results of a survey of representatives of 21 car service centres with various business organization formats, it is shown that car service companies in the Republic of Cyprus use a predominantly intuitive approach to organizing the supply of spare parts. The assessment of the formed carbon footprint is carried out extremely rarely and only selectively. Using the Hamel-Prahalad core competencies matrix, key supply models are grouped, considering the possibilities of digitalization and distributed management. The upper quadrants define advanced management models - dealership (upper left quadrant) and digitalization and decentralization model (upper right quadrant), referring to the ideal situation. Based on regression modelling, the relationship between the aspects of organizing the supply of spare parts to the formed carbon footprint is shown. While based on correlation analysis, the presence of a close relationship between environmental (specific carbon footprint) and economic (service coefficient) factors was confirmed. Taking into account the results obtained, the main organizational and managerial changes are proposed that will allow car service enterprises of the Republic of Cyprus to optimize the supply of spare parts while taking into account environmental and economic criteria, including the introduction of a competent approach to managing the supply of spare parts; modernization and digitalization of the inventory management system; implementation of quality, environmental responsibility, risk, cost and performance management systems, as well as the development and implementation of innovation management systems.
Technological methods for improving the tribotechnical properties of materials of rail transport wheels
Authors: Biryukov Vladimir , Kulikov Yuri , Yakubovsky Anton
Published: December 2023

The paper presents the results of metallographic studies and tribotechnical tests of samples of grade 2 wheel steel in the form of bushings, the end surface of which was processed using turning and milling operations. It was found that the greatest influence on the microhardness of the surface layers during milling was exerted by the tool feed rate. When turning samples without coolant, the microhardness of the modified layer is higher than when processing with the use of coolants in various variants. It is shown that three factors influenced the microhardness during turning, the temperature in the cutting zone, the oxidation of the surface and the magnitude of plastic deformations. The regularities of changes in the coefficients of friction from the type of processing were obtained, and after milling they were significantly lower than after the flow. The modified layers after milling had greater depth and wear resistance compared to similar layers after turning.
Simulators of visual environment of aviation and space simulators
Authors: Roganov Vladimir , Dolgovesov Boris , Gudkovai Catherine
Published: December 2023

The development of synthesis systems for human 3D-models of reference objects allowing them to be used in simulators of visual environment of aviation and space simulators follows the way of development: 3D-devices of indication; computer image generators and databases. Negative conditions of the USSR collapse led to the fact that the development of domestic computer image generators was stopped. However, the accumulated experience of development and serial production of visual environment simulators makes it possible to define available trends of their further development. Modern achievements of science and technology allow not only to solve the problem of synthesis of 2D-projections of 3D-models on the screen plane connected to the computer image generator but also, depending on the Customer’s requirements, to synthesise for a person visually observed 3D-objects with the possibility to form separate components of his cognitive model, in which his experience of orientation in space is accumulated. For example, to orientate in space by selected reference objects with simultaneous training of the trainee’s eye-sight, or to orientate in space by observing 2D-projections of 3D-models of reference objects additionally using information from simulators of cabin equipment devices. The article gives an overview of the main parts of visual simulators of aviation and space simulators.
The body of a dynamometer wagon for special technical purposes
Authors: Khikmatov Farkhod , Baltaev Meirkhan , Soboleva Irina , Xurmatov Yahyo , Yuldashov Abdusaid
Published: December 2023

The development of new and improvement of existing railway rolling stock wagons is an urgent task of our time, providing for cost reduction, both in the process of creation and operation, and in the maintenance of the wagon fleet. The purpose of the work is to modernize the body of a dynamometer wagon for special technical purposes using modeling. To determine the loading of the structural elements of a dynamometer wagon, a calculated three-dimensional model of the wagon body was developed, the reinforcement points of the wagon frame were determined. Compression/tensile strength tests of the wagon were performed on a stand for loading the frames of wagons and elements of coupling devices. The stress-strain state of the wagon structure is determined when statically applied longitudinal test loads are applied to it. The test results and the stress-strain state of the design of the prototype wagon, under the action of statically applied longitudinal compressive and tensile test loads, showed that the proposed design of the wagon meets the established strength requirements, while no visible damage and residual deformations were found in the design of the prototype wagon. The developed design of the dynamometer wagon body can be included in both freight and passenger trains, which solves the problem of efficient and safe use of locomotives when operating trains on mountainous sections of railways of the Republic of Uzbekistan.
Ensuring interchangeability in aircraft production using cutting stands
Authors: Kravchenko Georgy , Deniskina Antonina , Durov Dmitry , Chulenyov Anatoly
Published: December 2023

The paper discusses the basic principles and modern views on methods for ensuring interchangeability when cutting joints and docking airframe units, describes the purpose, provides a layout diagram and describes the design of the aircraft fin cutting stand, the equipment used and tools used to ensure the interchangeability of aircraft airframe units at joints.
Assessment of the impact of financial indicators based on the multiple linear regression model
Authors: Dalisova N.A. , Martynova T.A. , Eremeev D.V.
Published: December 2023

One of the criteria for effective working capital management is the financial cycle of a commercial organization, but indicators such as liquidity and return on assets also play a great role in financial planning. Despite the fact that these indicators play an important role in the financial management of the company, the nature of their relationships is ambiguous. Based on theoretical research, we can say that there is an inverse relationship between the financial cycle and return on assets. In the presented work, based on the model of multiple linear regression, an assessment of this statement about feedback was carried out, using the example of the leading telecommunications companies of the Russian Federation. The study mathematically proved that there is a weak relationship between the financial cycle and the return on assets of telecommunications companies.
Environmental agenda and priorities for integration cooperation in the development of financial technologies at the global and national levels
Authors: Razletovskaia Viktoriya
Published: December 2023

The active application of financial technologies in the processes of international financial integration actualises the search for the formation of national models of financial technology development, ensuring sovereignty with effective international cooperation. Considering the forms and directions of relations coordination at the level of emerging alliances of national models of fintech development, the article analyses the directions and forms of coordination in the sphere of financial technology development at the level of interstate unions, alliances and coalitions, and systematises the priorities of integration cooperation in the sphere of fintech. Based on the ways of participation in the processes of global financial integration, the study establishes strategic alternatives for the formation and development of national models, conditioned by approaches to the management of fintech development at the national level, on the basis of which the prospective priorities of the Russian segment of the development of financial technology are presented at the intersectoral and international levels.
Strategy of introduction of information system in trade and logistics company
Authors: Zhilkina Yana , Kukartsev Vladislav , Nizameeva Alena , Pinchuk Ivan , Ageev Daniel
Published: December 2023

In the modern world, technologies and market requirements are constantly changing, and the introduction of modern information systems is necessary for the successful functioning of companies in the field of trade and logistics. These systems automate processes, simplify management and increase efficiency. The advantages of implementing information systems are discussed in this article, as well as the problems that companies may face in this process. The inconsistency of the company’s hardware architecture and network with the requirements, as well as the lack of resources, including qualified personnel and finances, are the main problems. Incorrect choice of information system or resistance from employees can also cause problems. Taking into account all these factors and overcoming them is important for the successful implementation of information systems in the field of trade and logistics in order to get all the benefits from the new system.
Relationship between financial policy performance and sustainable development of the company
Authors: Liberova Alexandra , Tatarintseva Svetlana , Udalova Darya
Published: December 2023

The objects of the study were large organizations of two different branches of the economy: the water transport industry in the form of joint-stock companies open to stock markets and joint-stock companies of the radio-electronic industry of the Russian Federation. A statistical sample of companies from the total population of companies in each branch was made. Homogeneous groups of companies were created. The subject of study is the sustainable development of companies. The purpose of the study is to substantiate the choice of methods for assessing the level of sustainable development, taking into account the integrated methodology and assessment methods. Tasks: identification of sectoral specificity of activity; review and systematization of methods of analysis of economic, personnel (social) and operational efficiency of researched companies at the moment and retrospective dynamics; disclosure of the main positive and problematic factors of influence on sustainable development; formation of a set of indicators of assessment of sustainable development of companies within the industry; quantitative and qualitative assessment of sustainable development of companies by the proposed set of indicators: the advantages and disadvantages of individual methods. The rating approach, a number of methods of analysis of economic activity were used as a methodology. All companies studied are in the maturity phase in management terminology. The text of the article demonstrates the interim results of the studyA more detailed consideration of the institutional approach to sustainable development analysis and assessment is envisaged. At this stage, the environmental dimension of sustainable development is not being explored for a number of reasons.
Management of sustainable development of the enterprise in the conditions of digitization
Authors: Orazbayev Batyr , Utebaeyeva Zheniskul , Abayeva Gulder , Bozshaguiova Saule , Ladanenko Elena , Izbassarova Liza
Published: December 2023

The issues of managing the sustainable development of an enterprise in the context of digitalization have been studied. The digitalization process is interpreted as a tool for transforming the enterprise at the levels of control, production and management, which ensures the sustainable development of the enterprise. Describes methods and tools for research and implementation of digitalization to manage enterprise development. Based on the results of the study, a formulation was given for defining the digitalization process for sustainable enterprise management at the present stage of the development of digital technologies and the digital economy. A block diagram of the developed algorithm for assessing the impact of the digitalization process on the sustainable development of an enterprise is constructed and described. The proposed algorithm is based on the use of expert assessment methods in determining the impact of the digitalization process on the sustainable development of an enterprise. In this case, the rating of assessments is based on the index of the impact of the digitalization process on the sustainable development of the enterprise using quartile distribution.
Features of interaction between the Russian education system and student environmental organizations
Authors: Nedelko Pavel , Sverdlikova Elena
Published: December 2023

The author examines the features of interaction between the Russian education system and student environmental organizations. The article analyzes the current state of the environmental student movement on the example of the Association of “green” Universities of Russia and student organization ReGreen Polytech. The author identifies the key trends in the development of student environmental organizations.
Analysis of developmental education models in the ecological education system in Uzbekistan
Authors: Rakhimov Oktyabr , Rakhimova Dilrabo , Mirzaev Otabek , Azizov Shavkat
Published: December 2023

The article points out the analysis of goals and tasks, models and methods of organization of traditional and developmental education, as well as the cyclic sequence of learning in ecological education. The cyclical model of ecological education, the main stages of the cyclical process of teaching and educational development, the main problems of the reflexive state of the student, the characteristics of educational models, the cyclical sequence of mastering in developmental education have been developed, the form of organizing teaching according to this cycle is considered as a universal mechanism of personal experience and ability development, and the essence of developmental education is revealed. In the higher education system of Uzbekistan, the need for a gradual transition to developmental education based on digital technologies in ecological education is based on the need for independent educational activities in the field of ecology of students to occupy an important place and the necessity of its proper organization.
Responsible leadership on the way to sustainable development: environmental education and volunteering as practice fields
Authors: Korneeva Elena , Skivko Maria , Shmatko Anna
Published: December 2023

This article focuses on the idea of responsible leadership and the ways to promote and implement sustainable development through education systems and volunteer practices. The main idea of this research is to describe key characteristics of several leadership types and emphasize specific ideas of responsible leadership. One of the main assumptions relies on the possibilities of responsible leaders to foster sustainable changes in different areas. Therefore, this article, first, analyzes how responsible leaders can define, distribute and support sustainable initiatives, innovations and ideas at the levels of school, university and business education. Secondly, the article concentrates on the ways of responsible leaders in business to include sustainable agendas in organizational processes. Thirdly, the article explains the importance of responsible leadership in volunteering which is usually connected to social and environmental challenges. Thus, special attention is given to the responsible leaders’ characteristics to deal with sustainable challenges and solutions.
Crack resistance of bar reinforced concrete elements during construction and reconstruction
Authors: Radaykin Oleg , Hassoun Majd , Korol Oleg , Sabitov Linar , Chepurnenko Anton , Kiyamov Ilgam , Popov Anton
Published: December 2023

The consequence of the well-established idea of the crack resistance of reinforced concrete structures are two types of engineering calculations: for the formation of cracks and for limiting their opening width. Such a view is based on certain assumptions, simplifying the calculation to the possibility of its implementation “manually” and neglecting some real physical processes occurring in reinforced concrete under load. Seven of the most significant assumptions are considered in the article. For each of them, an analysis was carried out to determine whether they correspond to reality throughout the entire life cycle of the structure. It was proposed to use only one single calculation at the level of standards to assess the crack resistance of structures - according to the crack opening width, acrc. At the same time, the calculations already available in the design codes for limiting permeability and the safety of reinforcement will still remain in demand. The compressed algorithm is proposed for the possible consideration of the effect of cracks at all scale levels of the concrete structure, the key for which is the normalization of the statistical parameters of the distribution of discontinuities by diameters, lengths, openings, depths, directions, distances between discontinuities, etc.
Organisational and technological design improvement of reconstruction of large-paneled residential buildings of the first mass series
Authors: Shepelev Aleksandr , Severova Galina , Kolosov Aleaxander , Bahmetev Alexander , Narezhnaya Tamara
Published: December 2023

The article deals with the experience and results of the research in the field of technology and organisation of five-storey large-panel residential buildings reconstruction of 1-464A series. For this purpose, the new combined organisational and technological models for two stages of reconstruction are successfully developed and implemented. As a result of theoretical research and practical developments, the methodology of formation of rational organisational and technological solutions for reconstruction of residential buildings of the first mass series is proposed and successfully applied, on the basis of which the mandatory sections of the project of works production for reconstruction of the investigated object are designed.
Forecast of changes in land areas, population growth, dynamics of construction of buildings and structures
Authors: Abdullaev Zafar , Allanazarov O. , Khikmatullayev Sanjar , Aynaqulov Sharafidin , Oymatov Rustam
Published: December 2023

In the scientific work, in the period of 2011-2020, on the example of the Bostonliq district of the Tashkent region, the number of inhabitants in agriculture and the land areas, structures and buildings used by them, the annual changes of the land area per person were studied, and based on the analysis, the improvement of the living conditions and well-being of the population during the years 2021-2030 forecasts for the increase were made and recommendations were developed.
Simulation of the process of plane-radial filtration of fluid in a porous medium considering the migration
Authors: Ravshanov N. , Abdullaev Z.S. , Tursunov U.K. , Ungalov S.S.
Published: December 2023

Modeling plane-radial fluid filtration in a porous medium is considered in the article, taking into account the condition of fluid flow to a perfect well with a constant flow rate drilled in the center of the formation; the problem of identifying the parameters, entering the mathematical formulation to the problem, is solved. Solving the problem, the values of the following parameters were determined: T - the coefficient of water conductivity, which ranges from 15% to 27%, and μ∗− the coefficient of water loss (water filtration), which ranges from 22% to 31% relative to the exact values used in solving the forward problem. In the course of the study, it was revealed that one of the main parameters in the process of ground and underground water filtering in porous media is the identification of evaporation parameters. To identify their values, the following methods were applied in the study: the method of barycentric coordinates; the least squares method; and the gradient method. Numerical experiments were conducted at a time when the critical depth of groundwater was a known value, while q0, n were the unknown parameters. The analysis of the studies showed that the “discrepancy” takes the minimum value when the found parameters (taken as zero approximations) are used in the least squares method.
Prospects for the development of popular science tourism in the Yamalo-Nenets Autonomous District
Authors: Loktev Rostislav , Kolesnikov Roman , Chernykh Dmitry
Published: December 2023

The article analyzes the existing approaches to the definition of the concepts of scientific tourism and popular science tourism. The author’s definition of popular science tourism is given. The main tourist resources of popular science tourism in the Yamal-Nenets Autonomous District have been identified. It has been established that despite the availability of resources, popular science tours in the region have not been developed. The availability of resources allows us to talk about the prospects for the development of popular science tourism in the Yamalo-Nenets Autonomous District.
The impact of environmental technologies on employee motivation
Authors: Mironova Nataliya , Burtseva Tatyana , Pryadko Igor , Niyazbekova Shakizada
Published: December 2023

The article examines how the implementation of ESG standards and environmental technologies in an industrial enterprise can influence the motivational profile of employees. To do this, the authors built and studied the motivational profile of 30 employees of production departments, as a result of which 4 groups of motivational profiles were identified: socially oriented, individualists, creative and independent, and piecework wages. As a result of the environmental technologies implementation, wages at the enterprise increased, and all respondents also participated in the implementation of lean production tools in their departments. Hypothetically, this should have reduced the importance of the salary factor among those who placed it in leading positions and increased the need for creative work among all participants. The first hypothesis was not confirmed: the wage factor remained at the same level among the same respondents, which indicates its stability. Overall, this group makes up less than 10% of all respondents. The second hypothesis was confirmed: in the remaining groups the need for interesting and creative work increased. Thus, the implementation of ESG standards and environmental technologies has a positive effect on the creative potential of employees.
Propagation of longitudinal waves in a linear viscoelastic medium
Authors: Khamidov S.S. , Loginov P.V. , Akbarov N.A.
Published: December 2023

The article is devoted to the study of longitudinal wave propagation in a viscoelastic medium. A mathematical model of the problem of a linear viscoelastic medium was developed. The solution to the considered problems is reduced to the solution of a system of differential equations solved by the method of characteristics with the appropriate boundary conditions. The results are compared with known results obtained by other authors; a comparison shows the adequacy of the task posed. It was determined that the maximum values of stress, strain, and velocity of particles in viscous media vary according to a non-linear law. In the initial section of the medium and near it, first, the stress reaches its maximum, and then the strain and velocity of particles reach their maximum values.
Some exact solutions of the nonlinear evolutionary equation for the spreading of a plastic layer on a plane
Authors: Kadymov Vagid , Sosenushkin Evgeny , Yanovskaya Elena
Published: December 2023

The problem of free spreading of a plastic layer between parallel approaching planes of tool bodies [1] is considered, which simulates the technological process of stamping thin-walled structural elements. To describe the specified flow of a thin plastic layer, A. Ilyushin proposed an effective two-dimensional mathematical model averaged over the layer thickness, to which the original three-dimensional problem of the flow of an ideally plastic body leads. The transition to a two-dimensional problem was carried out on the basis of special hypotheses proposed as a result of the analysis of the well-known Prandtl solution in the problem of upsetting a flat, in a vertical section, layer of plastic material [2]. On the contact surfaces, the condition of complete slippage of the material is assumed, and the shear stresses reach a maximum value equal to the shear yield strength of the layer material. Within the framework of this model, A. A. Ilyushin formulated a boundary value problem in a region with a moving boundary with respect to three unknown functions - contact pressure and two flow velocity components.
Calculating water column height in the aboveground part of a low-altitude tank at abnormally low ambient temperatures
Authors: Neufeld Elena , Asmankin Evgeny , Ushakov Yuriy , Ivanov Pavel , Kargaev Ivan
Published: December 2023

The relevance of the study is confirmed by the widespread use of water tanks in rural settlements and farms in which ice forms inside the tank at abnormally low ambient temperatures, leading to a failure in the water supply system. The mathematical model is based on the heat balance equation, which takes into account the heat exchange of water with the ground and air through the separating metal wall, as well as heat transfer from water to air under the tank roof. Taking into account the low-potential energy of the ground, the paper presents a method for calculating the temperature of water in a non-height type tank of a given volume and radius. It allows to select the minimum height of its underground part to ensure uninterrupted water supply at average statistical values of ambient temperature and wind speed, registered in the region of research. The functions of the tank underground and above-ground part’s heights from the argument of its total volume to prevent the appearance of ice on the inner surface of the tank are graphically illustrated. The possibility of applying the method to determine the maximum water level in the above-ground part when the period of zero consumption is passed is indicated.
Innovative water treatment solutions and experience of introduction at railway transport infrastructure facilities
Authors: Pirogov E.N. , Govorova Zh.M. , Semenovykh V.A. , Кanivets U.S. , Govorov V.O.
Published: December 2023

The experience of operating ozone-sorption water treatment plants in the structural subdivisions of Russian Railways OJSC is provided. Technical solutions that increase the efficiency of water treatment and reduce operating costs are described.
Influence of the matrix type on the physical and mechanical parameters of the WPC
Authors: Galyavetdinov Nour , Safin Ruslan , Saerova Ksenia
Published: December 2023

Natural fibers and biodegradable matrices are currently being considered as substitutes for synthetic fiber-reinforced polymer composites mainly in areas where high load-bearing capacity and high strength are not essential. This study compares a biodegradable wood-polymer composite (WPC) prepared by varying the weight of the base material PHB and a wood flour binder as reinforcement at a weight ratio of 50/50 and 60/40%, as well as a binder made of a high-density polyethylene with wood flour at identical ratios. The maximum flexural strength of 19.193 MPa was obtained using a 50/50 combination of PHB and wood flour. The maximum value of tensile strength was shown by composites of polyethylene with wood flour at a ratio of 60/40. The maximum values of impact strength were shown by composites with a lower filler content. The highest water absorption was shown by composites from the biodegradable PHB binder. Thus, the analysis of the results showed that not only the content of the filler, but also the matrix itself has the maximum effect on the strength characteristics.
Digitalization and e-services in the Russian Federation: problems and ways to improve
Authors: Eremeeva Ekaterina , Sadyrtdinov Ruslan
Published: December 2023

The digitalization of the public administration system includes many elements, including the construction of convenient and popular channels for interaction between public authorities and the population. One of these is the provision of state and municipal services in electronic form. At the same time, the analysis of scientific literature indicates that one of the key issues is the willingness of citizens (especially certain categories) to use digital technologies. In this regard, within the framework of this work, the issues of providing citizens of Russia with state and municipal services in electronic form were considered. Particular attention was paid to the level of satisfaction of citizens with this format of interaction. Problems causing difficulties in using or abandoning digital cooperation in favor of the traditional channel of direct personal communication with public authorities were also considered. As part of the study, a comparative analysis of individual indicators of the use of electronic state and municipal services in dynamics for 2017-2021 is carried out in Russia as a whole, as well as in its individual regions. In addition, Russia was compared with the countries of Europe on a number of indicators. This technique allowed us to describe and evaluate the development of electronic state and municipal services in the Russian Federation and its individual territories in more detail. The results obtained led to the conclusion that the electronic format of interaction between the population and public authorities in the Russian Federation is becoming increasingly relevant.
Configuring parameters of information model elements for integration with RFID tags
Authors: Knyazeva Natalia , Medincev Aleksandr , Orekhov Aleksey
Published: December 2023

This article explores the application of radio frequency identification (RFID) technology in the field of construction and building management. The possibility of creating an integrated monitoring system with the building’s information model to track the condition and wear of structures during the operational phase is examined. Special attention is given to defining a list of monitored parameters, including the date of the last inspection, the level of structural wear, and the presence and characteristics of installed RFID tags. The study also discusses the implementation of this system throughout various stages of the building’s lifecycle, from design to operation and maintenance. Examples of relevant research are presented, which examine the use of RFID technology in construction and its integration into the building’s information model.
Mathematical model of an artificial neural network for controlling a robotic transport system during emergency rescue operations at energy facilities of the Penal System
Authors: Tsarkova Evgenia
Published: December 2023

The paper investigates a mathematical model of an artificial neural network with a delay in the arguments of the state and control functions, designed to control a robotic system during rescue operations at the facilities of the energy complex. The learning process of the considered artificial neural network is described by the problem of optimal control with delay. Using the Pontryagin maximum principle and the method of fast automatic differentiation, a method for solving the obtained optimal control problem has been developed. The results of the software tool operation, which was created using the algorithm for constructing an approximate optimal control of the problem under consideration, are presented.
Topo-heuristic reconfiguration of algebraic LSTM components to optimize temporal modulation in long-range dependencies
Authors: Pylov Petr , Maitak Roman , Dyagileva Anna , Protodyakonov Andrey
Published: December 2023

In this paper, the authors present a modified LambdaRank ranking algorithm based on the mathematical apparatus of the basic machine learning model (LSTM). LambdaRank is an effective method for ranking objects according to their importance, so it is often used as a mandatory component in search engines and recommendation systems. In this paper, an improvement of the algorithm is proposed by using optimisation techniques and introducing additional parameters for more accurate and stable ranking. The effectiveness of the proposed approach is verified on experimental real application data. The obtained accuracy results of the upgraded algorithm have also been analysed and compared with the classical variation of LambdaRank.
Integration of automated information systems and architectural solutions in industrial enterprises
Authors: Vasileva Viktoria , Kukartsev Vladislav , Suprun Elena , Shalaeva Daria , Ageev Daniel
Published: December 2023

The global aluminum industry faces challenges like price fluctuations and environmental regulations. To overcome these, it must adopt Automated Information Systems (AIS) to streamline data handling and improve decision-making. However, AIS implementation requires system integration, workforce training, and robust security measures. In summary, AIS adoption is crucial for the aluminum industry's efficiency and sustainability in a changing global landscape