bluuebunny/crossref_metadata_2025 huggingface dataset:
Software of information-measuring system for electric impedance tomography of biological objects
Authors: Aleksanyan G.K. , Kucher A.I. , Gorbatenko N.I. , Nguyen C.M.
Published: December 2023

This article describes the development of software for an electrical impedance tomography device that solves the problems of controlling the acquisition unit, primary processing and transmission of measurement data, their further processing on a personal computer, reconstruction, visualization and saving of results. Software modules are defined, algorithms for their functioning are developed, and their block diagrams are shown. An algorithm for the interaction of electrical impedance tomography device software modules with each other has been developed. A graphical interface for the device software has been developed. An algorithm for interaction with EIDORS software has been developed.Criteria for experimental testing of the functioning of the developed software have been developed, and possible errors in the operation of each module have been identified.
A mathematical modification of the WNTM associative algorithm for cognitive analysis and efficient detection of dualisms in text and video streaming data
Authors: Pylov Petr , Maitak Roman , Protodyakonov Andrey
Published: December 2023

We report on a modification of the WNTM (Word Network Topic Model) algorithm for efficient modelling of bitermes – pairs of words that frequently occur together in texts of different topics. The modified algorithm is an extension of the classical topic model and allows efficient detection and extraction of semantic relations between pairs of words. The paper presents formalized mathematical equations describing the process of modelling biterms, and also presents the results of experiments on real text data, confirming the effectiveness of the proposed approach.
Data mining to predict failures of communication network devices
Authors: Login E.V. , Luzhinskay A.S.
Published: December 2023

The complexity of telecommunication systems (TCS) and the configuration of communication networks, as well as a large set of data for assessing the state of devices, represent the main vector for the development and improvement of control systems for such communication networks. With the development of information and software technologies, another problem has become the reasonable choice of an apparatus that, taking into account its intellectualization and the characteristics of the initial data set, would correctly calculate and demonstrate the sensitivity of the result to external and internal changes. Modern methods of data processing make it possible to carry out a preventive analysis of the future functioning of TCS devices with flexible adjustment of dependent factors. The choice of one or another method will largely affect the result of the assessment, including its adequacy. And the forecast should also be estimated by this property with a high degree of accuracy. Not every method of data analysis is suitable for a particular data set. So the paper compares the most popular methods of data mining (from autoregression to neural networks) with a conclusion about the compliance with the criteria of working and predicted data. The authors also set out a verbal way of interpreting the predicted data using the example of a sample of failures.
State financial support of non-profit organisations as one of regional sustainable development foundations
Authors: Polyakov Mikhail , Bugakov Ilya , Chuev Sergey
Published: December 2023

One of the important factors of the region’s sustainable development is state financial support of socially orientated non-profit organisations (SONPO). For many years, government structures have been channelling significant funds to support non-profit organisations in order to develop civil society and solve social problems. With the increasing volume of government support and the diversity of relevant programmes at all levels - federal, regional, and municipal - there is a need to develop a methodology to assess the effectiveness of these programmes. This study analyses the volume, structure and features of state support to NCOs as a basis for sustainable development of the city of Moscow (Russian Federation).
Professionally-oriented training of students in a communication space of the environmental protection faculty
Authors: Shcherbakova Irina , Dorokhina Irina
Published: December 2023

The purpose of this article is to describe the role of professionally-oriented teaching in the development of dialogical and monological speech in a foreign language of the environmental protection and ecological faculties. The paper presents the main types of work with professionally-oriented text of the environmental protection and ecological themes, describes the types of exercises and methods of working with the text, and the advantages of using professionally-oriented texts of the environmental protection and ecological themes at the lessons in non-lingual educational institution. The use of texts of the environmental protection and ecological themes practices the skills of oral and written speech in a foreign language. The work with professional texts of the environmental protection and ecological themes adds to the vocabulary of the students. In the article, the authors proposed the types of work with the text in the classroom in the most interesting form. Reading professionally-oriented texts involves understanding and extracting information. Learning a foreign language in non-lingual educational institution is an interesting and exciting activity. Reading and understanding professionally-oriented texts of the environmental protection and ecological themes in a foreign language develops cognitive and communicative activities of students. In this paper, the authors proposed the most interesting exercises with texts. The presented work is devoted to the advantages of using texts in teaching students a foreign language in non-lingual educational institution. The article presents and describes the examples of texts application in the practice of foreign language teaching
Conceptual design of scientific and educational centers for the formation of a sustainable green framework of the city
Authors: Bukharina I.L. , Zhuravleva A.N. , Ivshin K.S. , Udalov D.N. , Kondratieva O.A.
Published: December 2023

Designing and creating a stable functioning ecosystem of the urban environment, endowed with individual features that meet the socio-cultural needs of residents of cities – large industrial centers, is an urgent problem of modern urban planning. The presence of accumulated technogenic impact and the need for rehabilitation measures are the conditions that must be considered when reconstructing and building this type of territory. The design and improvement of the urban landscaping center is a new approach to the use of existing urban areas, based on the principles of environmental friendliness, energy and resource efficiency.
Research of teachers background’s effects on ecological and professional competency development
Authors: You Lei , Tsai Peihua , Kuo Lunghsing
Published: December 2023

Based on the competency theory, this study made an integrated analysis of empirical research on the ecological and professional competency of Chinese university teachers in the past decade. Finally, 36 literature were included in the analysis, and the study sample size was 19,676.The results showed that the background variables of the study sample, gender, age, and teaching years, all had a certain influence on each dimension of teachers’ competency including ecological one, but the degree of influence was different. The gender variable had a significant positive correlation with motive, social role, and knowledge dimension, the influence degree was low and weak. The age variable had a significant positive correlation with trait, motive, attitude, social role, knowledge, and skill dimension, the influence degree was low and weak. The teaching years had a significant positive correlation with all dimensions, the influence degree was low and weak. Through this study, we can analyze the general trend of Chinese university teachers’ ecological and professional competency research results, and provide some support and help for future research in this field.
Future-proofing ecological knowledge management practices in the workplace: Lessons from the pandemic
Authors: Tanpoco Manuel , Cordova Wilson
Published: December 2023

The COVID-19 pandemic compelled businesses to adopt effective ecological knowledge management strategies to navigate the ensuing difficulties brought about by changing work setups and mobility restrictions. This study employs a grounded theory approach to explore the emergence of such strategies and their impact on overcoming institutional obstacles in knowledge management. Twenty-two managers with at least five years of eco-managerial experience were interviewed, resulting in the identification of critical practices. These included virtual collaborative tools, electronic knowledge databases, agile knowledge management techniques, communities of practice, training and skill development programs, hybrid working patterns, strategies for knowledge transition and succession, and programs that promote mental health and work-life balance. By adopting virtual collaboration tools and electronic knowledge databases, access to and dissemination of information are expedited and secured, fostering teamwork and institutional success. Agile ecological knowledge management techniques enable businesses to pivot quickly, fortifying their resilience and adaptability during unpredictable periods. The endorsement of ecological and human well-being and work-life balance initiatives increases employee morale and psychological well-being. Knowledge-sharing strategies, such as the formulation of communities of practice, foster professional development and teamwork. Training and ecological upskilling programs equip employees with essential competencies, whereas the hybrid work setup offers adaptability and compensates for fewer interpersonal interactions. Businesses must prioritize these ecological knowledge management strategies to enhance their organizational resilience.
Exploring ecological and professional competences’ development on the perspectives of teachers’ “needs”
Authors: Kuo Lung-Hsing , Tsai Pei-Hua
Published: December 2023

Taiwan’s Ministry of Education commissioned Nationwide Teacher Advancement Education Promotion Center to establish “the service platform of teachers’ professional development promotion” to promote effective communication on ecological and professional competences’ development among teachers and administrators. Through the platform, schools and national educational agencies can understand the needs of ecological and professional competences’ development and plan appropriate training and education activities. The number of hours, which were planned by the participants of teachers on the platform from 2009 to 2012 school year and which were needed for different kinds of professional development subjects, are analyzed. The results show that teachers’ needs for ecological and professional competences’ development subjects are stable. In summary, the paper draws some conclusions for the ecological and professional competences’ development of educators: provide teaching practices based on ecological and professional competences’ development courses. Provide a systematic series of ecological and professional competences’ development courses. Merge ecological and professional competences’ development resources to enrich the course content.
Determining the directions of forming the institutional environment of standardization in the sphere of tourism and related services in the conditions of an unstable economic situation
Authors: Tsatkhlanova T.T. , Zaitsev A.G. , Batyreva D.B. , Khartylova D.B.
Published: December 2023

The article presents the results of studying the application of national and interstate standards in the field of tourism and related services and the need to update them in an unstable economic situation based on a survey of representatives of regional authorities in the tourism sector, tourism industry facilities, educational and expert organizations. It has been established that most of the documentation in the field of standardization of tourism activities regulates general issues. A number of national standards of the Russian Federation in the field of tourism need to be substantially revised, taking into account changes in the legislation in the field of tourism. In connection with the voluntary nature of the application of standardization documents, it is advisable to expand the practice of voluntary certification systems in the field of tourism.
Technical solutions to extend the service life of solid roll wheels of passenger carries
Authors: Zaynitdinov Olmos , Soboleva Irina , Nigay Rodion , Ergasheva Vasila , Adilov Nodir
Published: December 2023

Rail transport plays an important role in the economy. This especially applies to passenger transportation, in particular in the Republic of Uzbekistan, where the problem of passenger rail transport is very acute. The fact is that passenger cars in Uzbekistan are mainly purchased from other countries. The volumes of our own production are very limited and most often consist of major repairs of cars produced in the 40-60s of the last century. This paper presents the results of studies that ensure the safety of passenger transportation by extending the service life of the wheel pairs of the corresponding cars.
Simulation of movements of cargo with a flat base on a four-axle platform
Authors: Saidivaliev Shukhrat , Djabbarov Shukhrat , Abdullaev Bakhrom , Ortiqov Mironshox , Rustamov Nassim
Published: December 2023

The improvement of the methodology for calculating the tension in the flexible elements of cargo fasteners with the simultaneous action of longitudinal, lateral and vertical forces on the "fastening-cargo" subsystem of the mechanical system "path - wagon – fastening - cargo" and during the movement of rolling stock, both along a straight and curved section of the track should be aimed at ensuring safety the movement of trains, safe transportation of goods on route and to ensure the safety of transport structures (vibration towers of power lines, railway bridges, etc.). There is still no mathematical model that would directly determine the tension in the flexible elements of the cargo fasteners and determine the location of the thrust bar to ensure the joint operation of the flexible and thrust elements of the fasteners.
Ensuring traffic safety during a comprehensive assessment of the technical condition of freight cars in operation
Authors: Martynenko L.V.
Published: December 2023

This article discusses the assessment of traffic safety during a comprehensive assessment of the technical condition of freight cars in operation. Based on the statistical values of the technical condition of the car, obtained as a result of the inspection of the wheelset, the main defect leading to the derailment of the cars was identified. With a comprehensive assessment of the development of wheelset defects in operation, amplitude-frequency characteristics are created, showing that in the presence of certain wheelset malfunctions and technical deviations of the track, a leap in dynamic forces occurs, which is one of the most important points in the causal relationship of car derailments. The shift of the wheel from the hub part is the main reason causing this defect, which appears when the pressing technology is violated and the diameter of the wheel or the diameter of the hub part is not suitable. During prolonged use with defects on the rolling surface, additional vibration develops, which can lead to shear. Diagrams of pressing in case of deviations and disruptions of the technological process are presented, as well as failures for which statistical data is collected for processing and analysis of their impact during operation.
Forecasting the residual service life of the main frame and extending the service life of shunting locomotives JSC “UTY”
Authors: Grishchenko A.В. , Yusufov A.M. , Kurilkin D.N.
Published: December 2023

The article is devoted to topical issues of control and calculation of residual life of the main frame of shunting locomotives operated on the railroad of Uzbekistan. Mathematical methods for calculating the residual life of locomotives are presented in the article and the expediency of extending the service life of shunting locomotives at the earliest stage of their development is substantiated. The outcomes were obtained with the help of the Solid works software environment which allows analyzing calculations and revealing forces acting on the main frame of locomotives. The mathematical description of forces acting during the main frame of locomotives is also presented. The analysis of the technical condition of the JSC “Uzbekistan Temir Yullari” locomotive fleet is conducted. The methods of main frame residual life forecasting and service life extension of shunting locomotives are investigated.
Substantiation of logistical indicators of diesel traction loco-motives use in the high-speed railroad section
Authors: Ablyalimov Oleg , Osipov Artem , Kurilkin Dmitriy
Published: December 2023

The paper presents the results of research on the justification of parameters of transport operation of three-section main (train) UzTE16M3 freight diesel locomotives on the high-speed railway section Marokand- Kattakurgan of JSC “Uzbekistan Temir Yullari” when moving freight trains without stops and with stops at intermediate stations, passing points, and separate points. The specified results were obtained by methods of locomotive traction theory in the form of tabular data, graphical dependences, and regression equations for determining logistical kinematic parameters of freight train traffic and the main energy efficiency indicators of the investigated diesel locomotives in a given section. The research results obtained by the authors can be used by drivers - instructors in thermal engineering and specialists of linear enterprises of JSC “Uzbekistan Temir Yullari” locomotive complex, whose professional and production activity is connected with the issues of saving of natural diesel fuel consumption by diesel locomotives on high-speed sections of the railroads.
Transformation of Eurasian railway logistics in the context of growing supplies towards East Asian markets
Authors: Pokrovskaya Oksana , Gulyi Ilia
Published: December 2023

Objective: to analyze trends in the cargo turnover of the ports of the Baltic basin with an emphasis on restoring the volume of port cargo transshipment, starting from the end of 2022. Methods: supply chain modeling, geo-economic analysis and parameterization of the main technical and operational indicators in transport and logistics systems. As a result of the conducted research: the analysis of changes in cargo transshipment at the ports of the Baltic Sea basin of Russia in comparison with the shipment of cargo through the ports of the Azov-Black Sea, the Far-East basin and other directions, the changes of participants from among the world and national sea container operators in the directions through the Russian ports of the Baltic basin, new container lines are given the dynamics of cargo turnover at Russian ports in the context of various types of cargo is also shown.
Improving the efficiency of biogas utilisation as motor fuel
Authors: Druzyanova Varvara , Petrova Sofya , Khiterkheeva Nadezhda , Yakovleva Lena , Petrov Nikolay , Radnaev Daba , Strekalovskaya Zlata , Shadrin Mikhail
Published: December 2023

The use of biogas in the internal combustion engine (ICE) requires the purification of harmful impurities that reduce the quality of operation of the ICE fuel system. A filter device for biogas purification is presented. The zeolite from the Khonguruu deposit of Suntar ulus of the Republic of Sakha (Yakutia) has been tested as a filter to separate impurities. The results of a multifactor experiment on the main factors of the biogas purification process are given: the size of the fractions, the filtering material, its mass, the ratio of the bulk material height to the filter diameter. The best results on biogas purification were obtained at the ratios of the height and diameter H/d=3.0:4.2. The optimum weighted average diameter of granules of the bulk filter material (zeolite) was selected – 0.004 m. and mass of filter media – 0.75-0.8 kg. At these values, the maximum level of biogas purification is observed, where the methane content is 93.3%.
Software package for analysis and design of overhead power transmission line structures
Authors: Tanasoglo Anton , Garanzha Igor , Bakaev Sergey , Kaledina Olesya
Published: December 2023

The article describes an algorithm for calculating wires and cables implemented by determining the loads on the supports, taking into account the compatibility of deformations of structural elements of an overhead power line (overhead line), atmospheric conditions and the profile of the route for all possible modes of operation of overhead lines. Wires and cables are exposed to the load from their own weight, as well as additional impacts in the form of horizontal wind load and the weight of icy deposits. Using the reduced equation of state of the wire (lightning-proof cable), the amount of tension in the operational state is determined if the voltages in the initial state and the values of loads and temperatures are known. It is revealed that for small spans, the voltage value is greatly influenced by temperature, and for large spans by load, which means there must be such a boundary (critical) span value at which the influence of temperature and load on the voltage value will be the same. As a result, software has been developed to solve the problem of determining the stress-strain state of wires and cables and collecting loads on overhead line supports. The developed calculation subsystems can function independently or be included in the software package as components written in the algorithmic language FORTRAN. In contrast to the traditional calculation, emergency loads for anchor-corner supports are determined not only in the ice regime, but also at minimum and average operating temperatures. The calculation in the software package allows us to consider the alternate breakage of all phases of wires and cables in both the left and right spans.
Investments of countries in renewable energy sources in Latin America and the Caribbean: State and prospects
Authors: Sentishcheva Elena , Parkhomchuk Marina , Kuzmina Violetta , Golovin Alexey
Published: December 2023

The Economic Commission for Latin America and the Caribbean has identified the energy transition period as one of the strategic areas of action to accelerate the recovery of the region. Renewable energy can become a comparative advantage in terms of attracting investments in other sectors of energy-intensive industries, for example, those related to green hydrogen and the development of carbon-neutral technologies. The dynamic international market and the countries of the Latin American region have the opportunity to solve the tasks strategically with the help of investments. The goal is to conduct a quantitative analysis and directions of FDI to Latin America and the Caribbean based on statistical data. Investment cooperation is analysed within the framework of the theory of structural functionalism (Parsons) using macroeconomic indicators of foreign trade cooperation based on UNCTAD statistics on world investment, data from the central banks of Bolivia, Brazil, CEPAL statistical agencies and the Bank of Russia.
Computer thermodynamic modeling of the producing silicon alloys from the Kentau Combined Heat and Power Plant ash
Authors: Karataeva Gulnara , Shevko Viktor , Bitanova Gulvira , Polatova Karlygash
Published: December 2023

The article presents the results of studies on the production of silicon alloys from the Kentau Combined Heat and Power Plant ash by the computer thermodynamic modeling method using the HSC-6.0-Chemistry software package. The effect of temperature (from 500 °C to 2000 °C) and the amount of carbon (from 30% to 40% of the ash mass) on the equilibrium distribution degree of elements between the condensed and gas phases, the grade of resulting ferroalloys. In the system under consideration, the formation of FeSi25 ferrosilicon occurs in the temperature range of 1500-1530 °C, and FeSi45 ferrosilicon-at the temperature of 1610-1700 °C; FS50 ferrosilicon is formed in the temperature range of 1700-1900 °C in the presence of 30% of carbon. The formation of FeSi45A10 ferrosilicoaluminium is possible at 2000 °C and 30% of carbon, in this case the concentrations of the metals in the alloy are 46.51% of Si, 8.57% of Al; 42.27% of Fe. FeSi45A15 ferrosilicoaluminium is formed in the system at 40% of carbon and 2000 °C; the elements’ concentrations in the alloy are 45.62% of Si, 14.76% of Al, 37.29% of Fe. Processing of 1 tonne of the ash makes it possible to produce 459 kg of FeSi45A10 ferrosilicon
Recovering and accumulating energy in regenerative braking of a garbage truck using hydro-mechanic power split transmission
Authors: Huynh Chu Van , Trieu Bui Hai , Anh Nguyễn Quang , Suy Pham Duy , Minh Nguyen Trong
Published: December 2023

Hydro-mechanical power-split transmissions (HPSTs) are a kind of continuously variable transmission; HPSTs integrated with the hydraulic energy recovery and accumulation function are the most coherent selection to im-prove the energy efficiency of the garbage truck. With an accumulator located in the speed-increasing hydraulic converter of the HPSTs, it is possible to recover and accumulate energy during braking and reuse energy when starting, accelerating or using other technologies in the process of garbage collection and transportation. Some results of simulation research and analysis of the energy recovery and accumulation process introduced in this paper can be used as a scientific basis for the complete design of energy saving powertrain systems, quality, and environmental friendliness for garbage trucks. In this study, the results of the simulation and analysis of the energy recovery and accumulation process were reported. Our findings can be used as a scientific basis for the complete design of energy saving powertrain systems, quality, and environmental friendliness for garbage trucks.
Numerical simulation of dust particle deposition and heat transfer in fin-plate radiators
Authors: Soloveva Olga , Solovev Sergei , Shakurova Rozalina , Mustafaev Timur
Published: December 2023

Fin-plate radiators are actively used in cooling systems for microelectronic devices. Radiators often become dusty during operation, which leads to decrease in heat flow and heat dissipation. Consequently, the possibility of device overheating and failure increases. We carried out numerical studies to assess the influence of the radiator geometry on the deposition of dust particles and, as a consequence, the change in heat flow. We built 3D models of plate radiators with different types of fins (flat and corrugated) and the distance between them. The problem of air flow with dust particles flowing around the radiator has been solved. We revealed the dependences of the efficiency of particle deposition and changes in heat flow on the geometry of the radiator, the size of dust particles and the distance between the fins.
Challenges and development perspectives of water supply system in Syrian governorates
Authors: Sawah Mohammad Mohannad , Slepnev Pavel
Published: December 2023

Human demands on water resources are increasing unsustainably at a time when the effects of climate change on the aquatic environment are worsening and, unfortunately, the world is not on the right track to achieve sustainable water and sanitation management. Water is increasingly demanded to feed growing populations, meet growing energy needs, provide services in expanding urban areas, and meet the needs of industry. To improve water security in the context of growing demand, water scarcity, increasing uncertainty, intensifying extreme weather events and fragmentation challenges, countries will need to strengthen institutional frameworks, manage information and develop infrastructure (both natural and man-made). Institutional instruments such as legal and regulatory frameworks, water pricing and incentives to improve water allocation, regulation and conservation are important. It is also necessary to have information systems for monitoring and tracking this resource, making decisions under uncertainty, conducting network analysis, making forecasts and issuing warnings related to hydrometeorology.
Communicative practices of territory promotion as a resource for sustainable development of a constituent entity of the Russian Federation
Authors: Skripnikova N.N. , Chesnokova E.S. , Volkova A.E. , Lyutaya K.A.
Published: December 2023

Sustainable development of the constituent entities of the Russian Federation, increasing their investment attractiveness is due to the need to form a modern infrastructure, innovative transformations in the economy and social sphere, as well as the implementation of effective investment projects and their information and communication promotion. Strategic goals of sustainable development of territories at all levels, improving the quality of life of the population at the moment actualized the need for a comprehensive analysis of a specific subject of the Russian Federation. Thus, the research carried out by the authors of the article made it possible to identify vectors for creating an open communication environment for positioning the Voronezh Region as a territory with sustainable development; to analyze successful communication practices in which a special place is given to issues of increasing the investment attractiveness of the region, that is, creating economic and social changes that contribute to the inflow of investments, strengthening the scientific and technical potential of the territory, creating a modern comfortable environment for residents. The article states. that investment projects should be calculated as points of growth, and the analysis of the investment attractiveness of the region implies a comprehensive study based on the establishment of quantitative and qualitative characteristics of the region, as well as a reasoned assessment of not only the current state of the subject of the Russian Federation, but also the prospects for its development.
Methodology for economic substantiation of assessment of the integrated use of organizational and technological solutions for land allocation for road and bridge construction
Authors: Doroshin Ivan , Jadanovskiy Boris , Kazaryan Ruben
Published: December 2023

Background: Nowadays, the high dynamics of transport support for economic, military, socio-demographic and environmental security in a market economy require new approaches to the development of methods for allocating land for road and bridge construction. The problems of economic and military-economic justification for decisions in the field of integrated use of the country's unified transport system are especially acute. Methods: Studies have been carried out on the development of the concept of an integrated transport system of rational correlation of general transport infrastructure using general scientific methods - system analysis, logical and mathematical modeling, systems theory, as well as methods of operations research and economic and mathematical methods, economic-visual modeling, research methods of operations. Results: The necessity of reducing the problem of efficiency criteria and limitations to a system-target model based on the structure hierarchy of the transport system and the corresponding modeling of the reconstructed system of transport support goals is substantiated. The elemental base of land allocation for road and bridge construction at the construction site has been formed. The value of a land plot is determined using a specific example of calculating the value of a land plot for the construction of a 10-kilometer highway. Conclusion: The method of substantiating the economic efficiency of the calculation in the selection and justification of the optimal technology for land allocation for road and bridge construction is considered. Control tasks for calculating the value of a land plot for the construction of a highway are presented.
Estimates of the accuracy and rate of convergence of short-term meteorological forecasts using the regional climate model RegCM4
Authors: Tertychnaya Anna , Khoperskov Alexander
Published: December 2023

We use the regional climate model RegCM 4.9 for the territory of Southern Russia to estimate the accuracy of meteorological forecasts. The errors of meteorological and climatic forecasts is due to complex non-equilibrium physicochemical processes in the components of the Earth's geosystem, which are characterized by gasdynamic and thermal instabilities at various spatial scales. A method for assessing the convergence of forecasts based on time series analysis is discussed for various localities. The reliability of forecasts for temperatures up to 1 degree can lie within 5-10 days for the south of the European part of Russia, depending on the predominance of cyclonic or anticyclonic atmospheric movements. The interval of acceptable precipitation forecast, as a rule, does not exceed 2-4 days for an area of about 104km2 and greatly decreases with decreasing area of the region under consideration. The annual volume of precipitation correlates in the cities of Rostov-on-Don and Volgograd at the level of 70 percent with each other. The correlation between the Rostov-on-Don City or the Volgograd City on the one hand, and the cities Astrakhan, Stavropol, Elista on the other hand, turns out to be significantly less, ranging from 30 to 40 percent.
Results of studying the chemical composition of water of different types of reservoirs
Authors: Nuraliev Nekkadam , Razikova Dilnoza
Published: December 2023

The aim of the study was a comparative description and assessment of seasonal dynamics of organoleptic characteristics, salinity and chemical composition of the water of some reservoirs in Uzbekistan. It was found, that the organoleptic characteristics and parameters of salinity of Kattakurgan reservoir in the spring and summer were practically within the MPC. Indicators of chemical composition of water of Kattakurgan reservoirs were below the upper limit of the MPC. In water samples of Tuyamuyun reservoir organoleptic characteristics and parameters of salinity in summer was higher than the MPC. Indicators of the chemical composition of water in the summer were below the upper limits of the permissible level, reliable inter-seasonal differences noted on the content of chlorides and sulfates. Organoleptic characteristics and the degree of mineralization of water samples of Charvak reservoir were within the MPC. All parameters of the chemical composition of water of Charvak reservoir were lower relative to the upper border of the MPC, regardless of the place of sampling and the time of year. Keywords: reservoirs, water of reservoirs, chemical composition, salinity of water, organoleptic characteristics.
Ensuring the economic security of agricultural enterprises in the prism of rational land use
Authors: Shashlo Nina , Kotesova Anastasia , Kotesov Anatoly
Published: December 2023

The article reflects the relevance of the problem of ensuring the economic security of agricultural enterprises in the prism of rational land use in the conditions of transformations in the system of land relations. It is proved that land resources for business entities in the agricultural sector are one of the main factors of production and reproduction process, a natural resource and an object of socio-economic relations. The features of the land as a means of production are outlined. It is revealed that the conditions of rational land use are the concentration of threats to the economic security of agricultural enterprises. The role of the factor of rational land use in the system of economic security is determined. The economic efficiency of agricultural land use is substantiated. A risk model of resource provision and rational land use of agricultural enterprises in the system of economic security has been formed.
Blast suppression with water barriers
Authors: Chernyshov Mikhail V. , Savelova Karina E. , Yatsenko Anna A. , Kapralova Anna S.
Published: December 2023

The article presents the results of numerical simulation of an explosive of interaction between air blast wave and water barrier. To find the best spape of relaxation material and to evaluate the suppression degree resulted from the interaction of the blast wave with protective liquid barriers, calculations for various shapes and sizes of water barriers were provided. Keywords: high explosive blast, blast protection, shock-wave structures, relaxation media, water barrier
Digitalization of the agro-industrial complex in Kazakhstan in the context of the transition to a “green economy”
Authors: Abuova Zhanargul , Bekenova Anargul , Bekenova Sandugash , Abakova Nurzhamal
Published: December 2023

The connection between the introduction of digitalization at enterprises and the development of production of the agro-industrial complex (AIC) of Kazakhstan in the transition to a “green economy” is considered based on the analysis of the current state of the agro-industrial complex in the country and the forecast of its development. To assess the relationship between the indicators of "green" growth and the introduction of new digital technologies, an analysis of data on the development of innovations in technologies related to the environment was carried out directly with the indicators of "green" growth themselves. The results of the study showed that, despite the consistently low indicators of the development of eco-technologies and the use of renewable energy sources in Kazakhstan, a high growth of agricultural GDP is projected for the studied period. According to the results of the analysis of targeted government programs, as well as the analysis of the problems of the agro-industrial complex and the possible effect of the introduction of digitalization, the active development of digitalization in all sectors of the agro-industrial complex can lead to "green" growth.
Procedure for calculation of rod piercing action
Authors: Popov A.M. , Valiev R.M.
Published: December 2023

The mechanical action of the rods is the most typical and diverse type of their interaction with the barrier. This variety is associated with those physical phenomena that occur during penetration of the barrier rod, for example, destruction of the penetrating rod, formation of a secondary stream of fragments from the barrier material, etc. The article is devoted to the development of a methodology for calculating the piercing action of a finite thickness barrier with a rod. The main stages of the barrier penetration process are considered. The model contains three stages: implementation, penetration and plug formation. Design dependencies at the main stages of penetration of the final thickness barrier by the rod are given. To compare theoretical developments, to assess their convergence with experience, the results of experimental studies are presented, which show satisfactory accuracy of calculations with experience.
Rolling of an elastic wheel on a hard flat surface
Authors: Mamaev Alexey , Balabin Alexander , Karelina Maria
Published: December 2023

Among the large number of studies aimed at solving the problems of determining the kinematic and force characteristics of a wheel when it rolls under various operating conditions, one can highlight analytical works based on the mechanics of interaction of an elastic wheel with a supporting surface. This approach used in this article, from the analysis of the phenomena occurring in the contact of an elastic wheel with a rigid base, makes it possible to consider general issues of the mechanics of wheel rolling. This made it possible to obtain for the considered friction pair “elastic wheel – supporting surface” relatively simple dependencies that make it possible to determine the longitudinal force and power of friction losses in contact, the relative speed loss (slippage) of the wheel, the coordinate of the boundary of the adhesion and sliding areas on the contact area, the drag coefficient rolling, the coefficient of tangential elasticity of the wheel, evaluate the legality of using various accepted laws of pressure distribution in contact.
Investigation and analysis of the linear dimensions of the flexible manipulator section in the process of tilting
Authors: Semenov Konstantin , Medyakov Andrey , Fischenko Petr , Lastochkin Denis
Published: December 2023

A feature of the functioning of such a device is a change in the position of each of the sections. The study of the peculiarities of changing the position of the link is an important task. The article investigates the features of the functioning of the flexible manipulator link in the process of tilting. Three rods are responsible for the process of changing the position of the link. Depending on the nature of the movement rods increase or decrease in length. The principle of position changing when the link is tilted evenly on two rods is considered. With the help of analytical geometry the analysis of changes in the linear dimensions of moving elements is carried out. The results of the calculations are presented in the form of graphs and allow us to show the process of changing the position of the rods in the process of tilting.
Algorithm for determining specific interfacial surface area of bubbles from image (on the example of ultrasound aeration)
Authors: Golykh Roman N. , Barsukov Alexander
Published: December 2023

The process of increasing the interfacial surface by means of ultrasonic oscillations in cavitation mode under forced aeration is considered. An algorithm for image processing of the interfacial surface to determine its specific area is proposed. The proposed algorithm provides an error in determining the specific interfacial surface associated with image rasterisation of no more than 6%. The determined error is found to be much smaller than the effect introduced by ultrasound. According to the result of image processing, ultrasound provides an increase in the interfacial surface up to 3 times or more.
Features of restoring the rolling profile of wheels coming into turning during repair
Authors: Budyukin A.M. , Kondratenko V.G.
Published: December 2023

The main objective of the performed studies was to improve the durability and operability of railroad wheels and make lower the costs of acquiring new ones by means of an innovative technology development for wheel profile rehabilitation and further restoration of physical and mechanical properties of the rim metal and improvement its structure. The information consists the facts about the nature of wheel pairs damage in operation, machine-tool equipment and cutting tools, used to restore the surface, based on the analysis of which a new rational technology for repair of wheel pairs on the rolling surface profile with subsequent restoration of the original operational properties is collected. A new method of wheel rolling surface profile restoration has been developed, which includes highperformance plunge grinding and subsequent induction heating (thermocycling), resulting in the formation of structures that lead to increasing of hardness and formation of compressive stresses, which has a positive effect on the efficiency of wheel rolling surface operation. This increases wheel life and safe operation of rail rolling stock. The implementation of the wheel profile recovery method with the help of highperformance plunge grinding and induction heating of wheels will lead to increased efficiency of railway rolling stock and reduce the need for the purchase of new wheelsets.
Determination of optimal conditions and kinetic laws of hydrogen chloride separation reaction from simm-dichloroethane (1,2-dichloroethane)
Authors: Kurbanova Dilafruz , Fayzullaev Normurot , Bobomurodova Sanobar
Published: December 2023

In the work, a catalytic optimal system was selected for the hydrochlorination of important components of chlorinated organic waste in the production of vinyl chloride. Information on the active and selective effect of various substances increasing the speed of the reaction in the hydrogen chloride release reaction was given. Operating modes of the reactor selected for oxidative chlorination of ethylene with hydrogen chloride in the presence of oxygen, designed for oxidative chlorination of ethylene with hydrogen chloride in the presence of atmospheric oxygen, were calculated. Also, the operating modes of the reactor were calculated, the kinetic equations of the rate of formation were constructed, and the equations of the relationship between the reactants and the reaction products were studied. As a result of the experiments, important kinetic parameters of simm-dichloroethane were determined to create a model of the simm-dichloroethane (1,2-dichloroethane) synthesis process. Kinetic studies were carried out in a temperature range of 300-350 ℃ in an ideal displacement flow reactor. In it, the reaction proceeded with no more than 70% conversion of sym-dichloroethane (1,2-dichloroethane). In addition, the material and heat balance of the reactor designed for oxidative chlorination of ethylene with hydrogen chloride in the presence of air oxygen was calculated. The purpose of the work is to study the optimal conditions and kinetic laws of hydrogen chloride separation reaction from simm-dichloroethane (1,2-dichloroethane).
Optimal maintenance tasks taking into account cost indicators
Authors: Kondsrashova Elizaveta
Published: December 2023

The reliability of technical systems plays a key role in ensuring their efficient operation over time. This article discusses the importance of reliability in maintaining preset parameters of the functioning of a system and its dependence on operating conditions. Maintenance is done to maintain the reliability of a system and control its functionality. The authors propose methods for selecting quality indicators and the optimal frequency of preventive maintenance and emphasise the importance of considering cost aspects when making decisions on maintenance. In conclusion, the article offers a brief algorithm for quality control of technical systems while placing an emphasis on system safety and economic efficiency. The study demonstrates the need to develop and apply new cost-based analysis methods to determine optimal maintenance strategies for technical systems. Overall, the article provides recommendations for improving maintenance operations and increasing the reliability of technical systems.
Catalytic thermo-oxidation of carbon matrix in the nanocomposite electrode material for supercapacitors preparation process
Authors: Larichev Timothy , Fedorova Natalia , Zakharov Yuri , Pugachev Valerii , Sergina Tatiana , Khitsova Liudmila
Published: December 2023

The study of thermal oxidation in air of carbon matrix in the presence of nanosized particles of filler - cobalt oxide Co3O4, as well as mixed oxides NiCo2O4 and ZnxCo1-xOy was carried out. The particles of transition metal oxides were created by thermal decomposition of precursor compounds (azides and hydroxides). It is shown that vigorous oxidation in the air of the porous carbon matrix starts after the formation of Co3O4 at temperatures above 300 ° C. The intensity of oxidation is directly proportional to the filler concentration in the carbon-transition metal oxide composite system. Carbon matrices based on multilayer carbon tubes show higher resistance to oxidation processes.