bluuebunny/crossref_metadata_2025 huggingface dataset:
EVALUATION OF LEARNING OUTCOMES IN THE SUBJECT OF ALGEBRA USING THE TESTMOZ PROGRAM
Authors:   Naryn State University named after S. Naamatov, Junusakunova Ayjarkyn
Published: February 2024

This article discusses the goals of using pedagogical tasks in the learning process, tasks as a means of managing the educational activities of participants, as a pedagogical form aimed at achieving results, and as educational activities of participants. The main types of pedagogical tasks are determined, in which test tasks are studied. Considering the test task as a material of an academic discipline intended for testing knowledge, the requirements for the development of the task are established: purpose, brevity, adaptability, logical form of presentation, evaluation rules, arrangement of elements, instructions. The main content of the study includes the characteristics of several types of tasks of the test form, the generalization of practical experience in creating test tasks and the creation of tasks on the subject of algebra through the Testmoz constructor. The advantages and opportunities of the Testmoz program are analyzed, which makes it possible to eliminate subjectivity in assessing the educational achievements of participants with the help of test tasks, as well as create conditions for self- education of participants.
DETERMINING THE RELIABILITY OF ELEMENTS OF GAS PISTON UNITS WITH SYNCHRONOUS GENERATORS BY THE METHOD OF HIERARCHY ANALYSIS
Authors:   Ufa State Petroleum Technological University, Zayniev Azat V. , Shaydullin Vener F. ,   Ufa State Petroleum Technological University, Khakimyanov Marat I. ,   Ufa State Petroleum Technological University
Published: February 2024

Relevance In the process of extracting hydrocarbon raw materials, associated petroleum gas (APG) is released, which in itself is a valuable fuel. Previously, associated gas released during extraction was simply burned, which was irrational and harmful to the environment. However, in modern conditions, oil companies tend to use associated gas. One of the best available technologies for the utilization of associated petroleum gas and the generation of electric energy is the use of gas piston units (GPU) at oil and gas producing enterprises, which are widely used at the present time. Progress in design methods and production technology of electric machines is expressed, among other things, in increasing their reliability, however, it is obvious that it will not be possible to completely avoid failures. The problem of solving issues of assessing and ensuring the reliability of GPU used for the utilization of associated petroleum gas at oil-producing enterprises is becoming more and more urgent every year, since serious losses of an economic and environmental nature are associated with insufficient reliability: emergency stops of GPU lead to the shutdown of funds of oil-producing wells and forced burning of APG on an open-type candle with the release of a large amount of the amount of greenhouse gases. Aim of research To study the reliability of gas piston units based on the weight indicators of their elements (functional units). Research methods The research uses the hierarchy analysis method (Saaty method) and the «weakest link» method. Results The article uses a methodology for evaluating equipment reliability indicators based on the weight indicators of functional units, taking into account the importance of reliability criteria. The node weight is calculated using the hierarchy analysis method (Saaty method). In accordance with the proposed methodology, the probability of trouble-free operation of the considered machines for the period of normal operation is calculated. Conclusions are drawn about the prioritization of technical impact on functional elements.
INCREASING THE LOAD CAPACITY OF OPERATED POWER TRANSFORMERS
Authors:   Volga Region State University of Service, Yusupov Renat A. , Gorshkov Boris M. ,   Volga Region State University of Service
Published: February 2024

Increasing the efficiency of high-voltage substations without the need to replace existing power equipment gives a great economic advantage in modern energy. These studies open up new prospects for the energy industry and can bring significant benefits from both economic and environmental points of view. Аim of research Improving the reliability and load capacity of operated power transformers by upgrading the cooling system. Research methods To achieve this aim, it was proposed to use additional temperature control devices by means of upgrading the cooling system and replacing the active part of transformers using modern insulating materials. The possibility of increasing the load capacity of transformers due to the introduction of a new transformer oil cooling system based on an innovative design of cooling radiators is analyzed. A set of monitoring and control devices is also considered, which is considered the most economical and efficient in terms of performance. Results As a result of the conducted research, it was found out that the introduction of a new cooling system for power transformers and the measures taken to replace the insulation of the active part can increase the load capacity by 30–40 %. And the use of additional devices for temperature control allows you to predict possible problems and take measures to prevent or solve them, which significantly increases the reliability of power supply.
APPLICATION OF PELTIER THERMOELECTRIC MODULE IN COOLING AND ELECTRIC POWER GENERATION TECHNOLOGIES
Authors:   Ufa State Petroleum Technological University, Solovev Bogdan A. , Gamisonia Giorgi K. ,   Ufa State Petroleum Technological University, Dimukasheva Gulnaz E. ,   Ufa State Petroleum Technological University, Kolomeets Dmitry A. ,   Ufa State Petroleum Technological University
Published: February 2024

Relevance Currently, the phenomenon of thermoelectricity is used quite widely in various industries. This phenomenon involves producing a potential difference or temperature difference, and is used for power generation, refrigeration and air conditioning, which helps minimize environmental pollution caused by conventional systems. This is due to the fact that the temperature difference is directly converted into a voltage gradient without the use of any mechanical systems. Aim of research The purpose of the study is to analyze various applications of thermoelectric phenomena using Peltier module technology. Research methods Analysis of literary sources, physical foundations of thermoelectricity. Results The study analyzed the use of thermoelectric technology in various industries, and calculated the parameters of the device based on thermoelectric modules.
EDUCATIONAL AND RESEARCH COMPLEX ON THE DISCIPLINE «INTELLIGENT DECISION SUPPORT SYSTEMS AND EXPERT SYSTEMS»
Authors:   Ufa State Petroleum Technological University (Branch in Salavat), Bashirov Mussa G. , Bashirova Elmira M. ,   Ufa State Petroleum Technological University (Branch in Salavat), Usmanov Marcel F. ,   Ufa State Petroleum Technological University (Branch in Salavat), Vagapov Ilnur F. ,   Ufa State Petroleum Technological University (Branch in Salavat), Kuzmina Alexandra F. ,   Ufa State Petroleum Technological University (Branch in Salavat)
Published: February 2024

Relevance The current state of the electric power industry is characterized by the use of information technologies based on artificial intelligence, which in turn imposes increased requirements on the level of training and qualification of maintenance engineering and technical personnel. These requirements determine the need to improve the educational program for the training of engineering and technical specialties with the introduction of modern information technologies into the educational process. One of the promising areas of control and management of energy complexes are a decision support system and expert systems using artificial intelligence. Aim of research The development of an educational and research complex with elements of artificial intelligence for performing laboratory work on the discipline «Intelligent decision support systems and expert systems». Research methods The research is carried out using the Python programming language, the PyCharm development environment with a set of extensions of the Qt graphics framework and the QtDesigner application, as well as designing a neural network algorithm using the TensorFlow library. Results The software of the complex has been developed, including a digital double of the stand, an executive part and a neural network model, which, at the level of implementing the basic functions of the integrated expert system, provides recommendations on optimizing the power system with current load parameters for the end user in the form of possible options for switching the type of load.
BATTERY CHARGE AND DISCHARGE MODE CONTROL SYSTEM AS PART OF A PHOTOVOLTAIC PLANT
Authors:   Industrial University of Tyumen, Sorogin Aleksandr S. , Khamitov Rustam N. ,   Omsk State Technical University, Zherebtsov Sergey N. ,   Industrial University of Tyumen, Ganicheva Lidiya S. ,   ITMO University
Published: February 2024

Relevance When using solar panels, there are various ways to charge and discharge batteries. When using charge controllers, it is necessary to take into account the additional possibility of issuing electricity from solar panels either for use in the load or for transmission to the network via a 2-directional switch. Aim of research Analysis and finding the most efficient and reliable way to charge the battery based on the required value of the charge current, and external conditions affecting the generation of electricity from solar modules for isolated power systems. Research methods Conducting an experiment on charging a battery from a photovoltaic module using the Atmega 8 module. Results During the analysis of existing charge and discharge controllers, it was revealed that the charge controller based on the Atmega 8 microcontroller is the fastest and most energy efficient for controlling the charge mode received from solar modules. This microcontroller made it possible to evenly distribute the charge between the battery for powering the microcontroller and the battery for powering the load, and the possible output of excess electricity to the network. The research carried out in the future will be relevant in the design and creation of an automated solar panel cooling system. This study is relevant because it shows the effectiveness of this control system in the course of experimental studies conducted on heated panels located at the Solar Power Plant in Kar'yernoye village (Crimea).
IDENTIFICATION OF THE PARAMETERS OF AN INDUCTION MOTOR EQUIPMENT CIRCUIT USING NEURAL NETWORKS
Authors:   Nosov Magnitogorsk State Technical University, Omelchenko Evgenii Ya. , Lymar Aleksei B. ,   Nosov Magnitogorsk State Technical University
Published: February 2024

Relevance AC electric drives holds a significant share in industry (80–90 %), as they are widely used in various devices and machines of various industrial capacities, ranging from conveyors, pumps and cranes, to drives for metallurgical production mechanisms. This is due to their ease of operation, reliability and high efficiency. The most common adjustable AC electric drive in industry is the «Frequency Converter — Asynchronous Motor» (FC–AM) electric drive. Knowing the exact parameters of the AM in such electric drives makes it possible to optimize their operation, improve efficiency and extend their service life. Also, this helps prevent overloads and increase the reliability of equipment, which in turn reduces operating costs and the accidents risks. With the development of technology, parameter identification is becoming increasingly important for adapting motors to new operating conditions and production requirements. Accurate parameters identification of also makes it possible to detect and predict the motors condition, which reduces the malfunctions risk and increases the equipment service life. Thus, knowledge of the asynchronous electric motors parameters plays a key role in increasing production efficiency and reducing operating costs. Aim of research The article purpose is to modernize the existing methodology for conducting asynchronous motors tests, regulated by the current State Standard 7217-87, through the introduction of neural networks for further identification of parameters based on them. The article provides a rationale for choosing the neural networks structure, its training algorithms, and also experimentally selected the hidden layer optimal configuration for each experiment. Neural networks were trained on motors with a power of 10-100 kW with a rated voltage of 380 V, a frequency of 50 Hz, and a synchronous rotation speed of 1500 rpm. Research methods The studies were carried out using Matlab Simulink software, data processing was carried out in Matlab and MS Excel software. The experiments, regulated by the current State Standard 7217-87, were carried out on computer models. Among the research methods used in the article, we can distinguish such as experiment (simulation in accrdance with State Standard 7217-87 measuring experiments), measurement (obtaining output parameters of the AM current strength in a computer model), comparison (comparing the results of training neural networks using built-in metrics tools). Results Neural networks have been developed to identify asynchronous motors parameters that process the experiments results in the current State Standard 7217-87. Also, the creating neural networks methodics describe in the article can be used to create similar neural networks for other types of AM.
TECHNICAL SOLUTIONS FOR INCREASING THE RELIABILITY OF POWER SUPPLY TO PUMPING UNITS OF OIL AND GAS PRODUCTION INSTALLATIONS IN THE EVENT OF VOLTAGE DIPS
Authors:   Ufa State Petroleum Technological University (Branch in Salavat), Bashirov Mussa G. , Bashirova Elmira M. ,   Ufa State Petroleum Technological University (Branch in Salavat), Prokop Georgiy S. ,   Ufa State Petroleum Technological University (Branch in Salavat)
Published: February 2024

Relevance Electrical receivers in the oil refining and petrochemical industries require high quality electrical energy. Since these industries are the support point for the growth of the state’s economy, and, as a consequence, its positive dynamics in general, it is necessary to ensure the reliable operation of the executive bodies of the technological production of this industry - machines and apparatus, automation equipment operating on electrical energy. Aim of research Search and analysis technical solutions to protect electrical receivers critical in the technological process from voltage dips. Research methods Analytical review of technical means, scientific and technical literature. Results The optimal technical solution to improve the reliability of power supply to critical mechanisms has been identified and justified.
METHODOLOGY FOR CALCULATING AN OZONIZER WITH A HONEYCOMB STRUCTURE
Authors:   Ufa University of Science and Technology, Maksudov Denis V.
Published: February 2024

Relevance The use of ozone-catalytic reactions is a promising method for purifying water, air and exhaust gases. They can be used, among other things, to solve the problem of cold starting of a car engine, allowing for the effective neutralization of toxic impurities even at low temperatures. Optimization of an ozone-catalytic device (according to the criterion of minimizing specific energy costs) requires the development of a mathematical model that takes into account the mutual influence of numerous parameters of physical processes occurring in the channels of the catalytic unit. A large number of mutually influencing parameters actualizes the use of iterative algorithms for the numerical solution of a system of equations of a mathematical model. Aim of research The aim of this article is to develop a mathematical model of the physical processes occurring in the ozonizer, and to create on its basis an iterative method that is possible to determine the change in temperature, pressure and composition of the gas mixture as it moves through the channels of the ozonizer of a honeycomb structure, taking into account the mutual influence of these parameters to each other and to the power of the barrier discharge. Research objects Ozone catalytic device. Research methods Mathematical modeling of physical processes. Results To solve the system of equations describing the physical processes in the ozone-catalytic device, an iterative algorithm was developed to determine the spatial distribution of parameters (temperature, pressure, ozone concentration) in the channels of the catalytic unit of the honeycomb structure.
INFLUENCE OF SUPPLY VOLTAGE FREQUENCY ON THE EFFICIENCY OF OZONE FORMATION IN A CELLULAR OZONATOR
Authors:   Ufa University of Science and Technology, Maksudov Denis V.
Published: February 2024

Relevance A promising direction for the development of domestic and foreign eIn the modern world, more and more attention is paid to environmental issues. One of the effective ways to solve environmental problems is the use of ozone - an allotropic modification of oxygen, which has high oxidizing abilities and can be used to purify and sterilize water, air and exhaust gases. However, the spread of technologies related to the use of ozone is hampered by their energy intensity. In this regard, an urgent task is to optimize the design of ozonizers and its power supply mode to reduce the specific energy consumption for ozone production. The main aim The aim of this article is to study the dependence of the efficiency of ozone formation on the frequency of the supply voltage and to determine the optimal frequency at which this efficiency would reach its maximum value. Research objects Ozonizer. Research methods Mathematical modeling of physical processes. Results An expression is obtained to determine the distribution of the electric field strength in the discharge gap. An iterative algorithm has been developed, as a result of which graphs of the dependence of the critical frequency value on the amplitude of the supply voltage, as well as on the temperature and pressure of the gas passing through the discharge gap, are obtaine
A METHOD FOR CONTROLLING A FREQUENCY-CONTROLLED DRIVE OF THE GAS AIR COOLING APPARATUS WITH TWO-STAGE COOLLING
Authors:   Ufa State Petroleum Technological University, Pashkin Vasiliy V. , Shabanov Vitaliy V. ,   Ufa State Petroleum Technological University, Ivashkin Oleg N. ,   Gazprom dobycha Yamburg LLC
Published: February 2024

Relevance To cool the gas to the required temperature values in gas production and transportation in Russia, the most widespread has been implemented in the device of air-cooled gas. The installed capacity of electric drives of fans of gas air cooling devices reaches 70 % of the total installed capacity of gas field facilities. Therefore, the issue of increasing the energy efficiency of electrical complex of gas air cooling device by introducing a frequencycontrolled electric drive is relevant. Aim of research To develop a method of frequency control and to investigate the technological features of the operation of gas air cooling devices with a two-stage cooling scheme that ensures minimal electricity consumption. Research methods Mathematical methods of calculation and analysis, Mathcad software package. Results Based on the developed optimization algorithm for selecting the rotational speeds of the motors of the section of the gas air cooling apparatus, it is shown that the most effective increase in thermal efficiency can be used with separate frequency control of the fans of the section of each stage. For separate frequency control, the objective function of optimal control of the frequency-controlled electric drive of the gas air cooling apparatus according to the criterion of minimum power consumption has been developed.
AN ALGORITHM FOR CALCULATING CAPACITIVE CURRENTS IN SINGLE-PHASE EARTH FAULT USING THE PARAMETERS OF EMERGENCY AND PRE-EMERGENCY MODES
Authors:   Ufa State Petroleum Technological University, Sorokin Alexander V. , Shabanov Vitaliy V. ,   Ufa State Petroleum Technological University
Published: February 2024

Relevance Single-phase earth faults are the most common type of damage in networks with an isolated neutral. At the same time, there are no universal solutions for localization and search of single-phase circuits. The availability of information on the capacitive currents of a damaged line can become the basis for the development of new relay protection and automation algorithms for the localization and elimination of single-phase short circuits in networks with an isolated neutral. The current trend in 6–35 kV distribution networks is the development and implementation of intelligent power grid technologies that allow for high-precision measurements and data transmission. The article presents, developed by the authors, an algorithm for calculating capacitive currents in single-phase earth faults using technologies of intelligent electrical networks. Aim of research Development of an algorithm for calculating capacitive line currents in single-phase earth fault using the parameters of emergency and preemergency modes. Creation of a simulation model of a device implementing the developed algorithm, and subsequent evaluation of the algorithm based on the results of simulation modeling. Research methods The study of the developed method was performed in the Matlab Simulink software package. Results An algorithm for calculating capacitive currents in a single-phase earth fault using the parameters of emergency and pre-emergency modes is presented and described in detail. The conducted studies of the developed algorithm using simulation modeling have shown high accuracy in calculating capacitive currents in the single-phase earth fault mode.
Prospects for the Creation of a Russian-Chinese Cross-Border Zone of Economic Cooperation Between Blagoveshchensk and Heihe
Authors: Zuenko Ivan
Published: February 2024

The article analyzes the history and prospects for the implementation of the project of a cross-border zone of economic cooperation between Russia and China. As the most promising site for the placement of such a zone, a "pre-bridge territory" is considered, adjacent to the Kanikurgan-Heihe bridge crossing in the immediate vicinity of the cities of Blagoveshchensk (Amur Region) and Heihe (Heilongjiang Province). At the same time, the author concludes that at present the Russian leadership is aimed at creating not a cross-border, but a border zone, which, nevertheless, should cooperate closely with the border zone of economic cooperation located on Chinese territory in Heihe. Bearing in mind that the subject matter under consideration is in many ways the subject of terminological and factual confusion, the author pays particular attention to the definition of what is meant by the cross-border and border zone of economic cooperation, which implies some preferential regime, etc.
Good Intercollegiate Athlete Representation: "All Hands on Deck"
Authors: Schull Vicki , Kihl Lisa A.
Published: February 2024

The current landscapes of intercollegiate sports and higher education are experiencing shifts toward more democratic representation. In college sport, student-athlete representatives are more engaged in policy decisions, hold voting rights, and are included on boards and committees. Despite this shift, little is known about what good intercollegiate athlete representation entails and how multi-level, democratic governance systems may support or impede good representation in the context of college sport. This paper explores qualities of good college athlete representation (CARep) and factors contributing to and/or detracting from the process of good CARep in the context of a democratic multi-level intercollegiate sport governance system. Findings showed individual attributes of good CARep, including interpersonal skills and leadership, were based on democratic representation virtues (i.e., fairmindedness, trust building, good gatekeeping) and helped foster democratic values of civic equality, self-governance, and inclusion. The intercollegiate sport governance system supports the work of athlete representatives primarily through its educative function. More specifically, administrators were key to identifying experiential learning opportunities for athlete representatives, which contributed to the process of good representation through responsiveness, inclusiveness, and egalitarianism. Lack of administrative support and education for all relevant interest groups characterized governance system inconsistencies impeding good CARep, primarily at institutional levels where the purpose of student-athlete committees varied and/or athlete representative roles were less understood. Implications for practice and directions for future research on good athlete representation are presented.
Reframing the Service Environment in Collegiate Sport: A Transformative Sport Service Research Approach
Authors: Yang Yiqi , Gray Erika , Kinoshita Keita , MacIntosh Eric
Published: February 2024

This study applies a transformative sport service research approach to examine student-athletes’ wellness within a collegiate sport setting. Sixteen semi-structured interviews were completed during the COVID-19 pandemic and the stop of play in Canada (early 2021). Findings denoted wellness was influenced by this time period as well as organizational factors which are within the purview of existing management practices. The study details the service environment to understand physical and mental well-being while taking into consideration the general and organizational environments which influence the student-athletes. Findings demonstrate that eudaimonic-related experiences (e.g., learning, development, relationship) are related to student-athletes' mental well-being. This research underpins the role of education, policies, and communication, which draws several implications for the service environment in a collegiate sport setting and the key stakeholders involved in producing an environment to enhance student-athletes’ experience. The paper elaborates on the importance of the service environment and provides evidence of what student-athletes suggest management can change and focus their efforts on towards creating a transformative service environment. Theoretical implications for the transformative service research are put forward, including the co-creative aspects to determine programming which could contribute towards student-athletes wellness. Broader suggestions for change within the sport system and future research are also advanced.
Examining Faculty Perspectives on the Role and Value of Intercollegiate Athletics
Authors: Harry Molly , Springer Daniel
Published: February 2024

The uneasy marriage of higher education and athletics can be seen through the conceptual lenses of former institution and National Collegiate Athletic Association (NCAA) President Myles Brand’s Standard or Integrated View. The Standard View maintains that athletics serves as a business while the Integrated View argues that athletics should be appreciated as a form of education and art. Through these perspectives of athletics as a business, education, and art, this study surveyed faculty at one football bowl subdivision institution (n = 216) on their perceptions of athletics. Analyses demonstrated faculty perceptions were varied and contradictory as they noted athletics was simultaneously a business important for their institution, but also a detractor for higher education at large. Additionally, they perceived some developmental benefits of participation in athletics but still did not believe sports to be educational in nature. Implications for better understanding faculty perceptions of athletics while improving the education-sport marriage are discussed.
Identity Dynamics in Collegiate Olympic Athletes Post-Tokyo 2020: A Pre-Post Study
Authors: Kazmierski-Davie Grace , Ballouli Khalid
Published: February 2024

This study employs a pre-post survey design, engaging a purposive-convenience sample of 94 U.S. college athletes who participated in the Tokyo 2020 Summer Olympics across eight sports and 22 countries. Utilizing validated scales, participants’ group, national, and athletic identities were measured weeks before and after the event. Paired sample t-tests and a repeated measures multivariate analysis of variance were utilized to understand the effects of time and demographic variables on these identities. Results revealed that after competing in the Tokyo 2020 Olympics, college athletes exhibited a significant decrease in their group identity and a significant increase in their national identity, while their athletic identity remained relatively unchanged. The results were qualified by student status interactions such that international students showed a significant decrease in group identity and a significant increase in national identity after competing in Tokyo 2020, with no significant changes observed in these identities for domestic students. The results illuminate a complex process of identity negotiation experienced by collegiate Olympic athletes that transition between Olympic and college sport environments. This study contributes to sport management literature by offering nuanced insights into the dynamics of role-switching, urging stakeholders to utilize these findings to enhance the experiences of college athletes.
Free floating immunofluorescence protocol on mouse brain sections for tau pathology v1
Authors: Suteja Felicia , Fu YuHong
Published: February 2024

This protocol describes our free-floating multiplexed immunofluorescent staining protocol to ascertain levels of tau and phospho- tau in mouse tissue from transplanted human iPSC cells carrying different PD related mutations.
New trends in the minimally invasive repair of abdominal wall defects v2
Authors: Ferrara Francesco
Published: February 2024

In the last years several authors have proposed different names to describe their minimally invasive approaches, other than the classic laparoscopic techniques like IPOM and IPOM plus, for the treatment of ventral hernias and diastasis recti. This systematic review aims to classify and summarize the characteristics and outcomes of the new laparoendoscopic techniques for the repair of abdominal wall defects.
Recrutamento das voluntárias v1
Authors: Rafaelly Vilefort Sales Alicia
Published: February 2024

Este protocolo foi desenhado para o processo de coleta de dados do projeto de pesquisa Sono e Gravidez. Consulte a aba Guidelines para visualizar o fluxograma do processo como um todo. Caso tenha dúvidas ou sugestões, entre em contato com um dos autores. --- This protocol was designed for the data collection process of the research project Sleep and Pregnancy. See the Guidelines tab to view the process flowchart as a whole. If you have any questions or suggestions, please contact one of the authors.
Wasserstein Distance- EEMD Enhanced Multi-Head Graph Attention Network for Rolling Bearing Fault Diagnosis Under Different Working Conditions
Authors: Wang Xingbing , Yao Yunfeng , Gao Chen
Published: February 2024

Traditional fault diagnosis models often overlook the interconnections between segments of vibration data, resulting in the loss of critical feature information. Therefore, an efficient fault diagnosis model tailored for rolling bearings is proposed in this paper. The 1D vibration signals are first preprocessed using ensemble empirical mode decomposition (EEMD) to generate multiple intrinsic mode functions (IMF) as individual nodes. The percentage distance between each node is calculated using the Wasserstein distance (WD) to capture the relationships between nodes and use it as the edge weights to construct a node graph. An improved multi-head graph attention network (MGAT) model is established to extract features and perform classification on the node graph. This MGAT model effectively utilizes the relationships between nodes and enhances the accuracy of fault diagnosis. The experimental results demonstrate that the proposed method achieves higher accuracy compared to similar models while requiring less processing time.
Validation research of pressure decay test method for internal leakage detection of hydraulic cylinder
Authors: Li Weijie , Qian Xinbo , Chen Xinyuan , Li Feihong , Lu Yan
Published: February 2024

Leakage test is one of the acceptance tests to ensure hydraulic cylinder reliability. Under the consideration of economic and technical maturity conditions, the existing internal leakage detection methods may be difficult to achieve rapid screening. After research, the pressure decay test method is a common method of quickly testing hydraulic cylinders for internal leakage in the manufacturing industry. However, the validity of the pressure decay test method has not been theoretically verified, limiting the versatility of the method. This paper will theoretically validate the effectiveness of the pressure decay test method and provide important theoretical support for its use as a general rapid screening method for internal leakage, thereby improving the reliability and safety of hydraulic systems. Both simulation and experimental results show that there is a linear relationship between the pressure decay rate and the internal leakage rate. Especially for working pressures greater than 16 MPa, the pressure factor has an insignificant impact on the application of this method.
A simulation and experimental verification of the operation of the oxidising catalytic converter in diesel engine.
Authors: Kruczyński Stanisław , Ślęzak Marcin
Published: February 2024

This paper investigates an oxidizing catalytic converter in a diesel engine's particulate filter system, focusing on simulations and empirical studies. The converter, with a 1.4 dm3 volume and 400 cpsi channel density, features a platinum coating of 2.5 g/dm3. Scanning electron microscopy (SEM) examined its surface, revealing platinum and a highly porous structure with randomly distributed Pt crystallites. Simulations were conducted using AVL Boost, utilizing real exhaust gas concentrations to assess various converter volumes and channel densities for CO, HC, and NO2 conversion in NOX. These simulations were paralleled with empirical tests on an engine dynamometer. The comparison of simulation and experimental data showed that the simulation algorithm could accurately predict the converter's performance in reducing CO and HC levels and NO2 in NOX. This suggests that simulations can partly replace costly empirical research, offering a preliminary evaluation of the converter's future effectiveness.
The evolution of the symbolic plan in the architecture of kitchen factories of the 1920-1930s
Authors: Isakov Alexander
Published: February 2024

A comparative analysis of three kitchen factories built in the 1920s-1930s is carried out - the 1st Moscow kitchen factory on Leningradsky Prospekt, the kitchen factory of the State Aviation Plant No. 1 in the 1st Botkinsky passage in Moscow and factory-kitchen ZiM in Samara. All three kitchen factories were built with the participation of the architect of the share company NARPIT E. N. Maksimova. The purpose of the study is to substantiate the concept of the evolution of the functional and technological structure of the considered factory-kitchens as three stages in the formation of the symbolic plan of the factory-kitchen of the architect E. N. Maksimova in Samara.
Options for adaptation of depressive industrial territories of large cities
Authors: Drebezgova Maria , Averkov Pavel , Bukhanova Anna
Published: February 2024

The article discusses the issue of adaptation of former industrial buildings in industrial areas. The world experience of transforming industrial heritage is analyzed, the features of working with these objects are revealed, taking into account their historical value and the recorded legislative status of the cultural heritage object. Options for adaptation of depressed industrial areas have been identified, depending on the degree of influence and intervention both in the architectural appearance of the building and its space-planning structure, and in its urban planning characteristics: restoration with adaptation, new non-capital construction, reconstruction, new capital construction. Models for adaptation of industrial heritage sites in the urban environment are proposed, depending on the interaction of the industrial territory with the city infrastructure.
Multi-criteria choice of alternatives based on hierarchy analysis method
Authors:   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, MIKHNO Oleksii , PATRAKEYEV Igor ,   Kyiv National University of Construction and Architecture, Kyiv, Ukraine, LEVINSKOVA Natalia ,   Military Institute of Taras Shevchenko National University of Kyiv
Published: February 2024

Background. When conducting descriptions of territories of a neighboring unfriendly state, as a rule, valid information about the development of such territories is hidden. Therefore, it is necessary to use the prognostic apparatus of expert evaluations based on information obtained from open sources. The article examines the basis of the military-geographical analysis of urbanized territories from the point of view of the application of expert assessments for many criteria. With a large number of options for prognostic decision-making, the question of choosing an alternative (decision option) should be fully justified. For such cases, it is advisable to use ranking based on the method of analysis of hierarchical structures. The purpose of such a description is to increase the validity of the decisions made during the selection of the optimal alternative by creating instrumental means of formalized evaluation of experts' judgments. Methods. The following methods were used: system analysis in the formation of the urban environment metabolism model; the method of analyzing hierarchies when applying multi-criteria selection of alternatives; the method of expert evaluations as a global method of the condition determining of the object according to many criteria; methods of theory of sets and theory of utility, with the help of functions of which the advantages of making the appropriate decision on a set of acceptable alternatives were modeled. Results. From the proposed alternatives, based on the obtained utility functions, the most optimal alternative, in the opinion of experts, was chosen, which can be used during the planning of measures to ensure the sustainable development of the urban environment. The calculated characteristics of utility functions are used as criteria for choosing the optimal alternative. The proposed criteria and alternatives are presented in the form of a hierarchy. Conclusions. The article lays the groundwork for additional research and application of the methodology of analysis of hierarchies and the theory of utility in achieving the goals of sustainable development of urban areas in prognostic models of military-geographical analysis.
Administrative law: current development trends
Authors:   National Aviation University, Kyiv, Ukraine, Kalyuzhny Rostyslav
Published: February 2024

Administrative law of Ukraine, a textbook, P. Dikhtievskyi, Yu. Vashchenko, N. Zadyraka, V. Pashynskyi, V. Klynchuk and others; under the editorship P. Dikhtievsky. Kyiv, 2023. 772 p.
THE IDEAS OF THE HUMBOLDT MODELAND THE MISSION OF THE UNIVERSITY IN THE CURRENT WORLD
Authors:   Humboldt University of Berlin, Baberowski Jörg , Pavlova Olena ,   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
Published: February 2024

The interview with Professor Jörg Baberowski is devoted to understanding the mission of the university in the contemporary world.
VALUE DIMENSIONS OF QUALITY CULTURE IN HIGHER EDUCATION
Authors:   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, Maslikova Iryna
Published: February 2024

The article analyses the changes in the social and cultural context in the functioning of the modern university, which lead to the actualization of the issues of development of quality culture and its assurance. It is identified that the problems of quality assessment arise due to the insufficient articulation of the essence of concept of "quality" and "quality culture" in international standards and national legislation. The purpose of the study is to define the essence and dimensions of quality culture as a necessary element of the mission of a contemporary university. Results. It is noted that in current processes of quality assurance in the higher education and its assessment there is an excessive focus on purely managerial procedures, which results in threats to the cultural mission of the contemporary university and loss of motivation for authentical academic activity. Consideration of complex educational activities through the prism of the quality of learning outcomes and the quality of research, teaching, learning, and assessment processes opens up prospects for theoretical justification of quality requirements with the use of the theories of consequentialism and virtue ethics. The article demonstrates the possibilities of justification the quality in education from the standpoint of the common good of all stakeholders, firstly, as maximizing the instrumental goods of all participants in the educational process and, secondly, as continuous improvement of members of the university community in complex joint activities based on "intrinsic" values. Thus, the university is able to realize its mission, which can combine instrumental "extrinsic" and self-sufficient "intrinsic" values-goals. In this way the understood quality in education allows to broaden the focus of consideration of the essence of quality culture, which is unique for each university. Quality culture, as an element of organizational culture, bears the imprint of the value system of national culture, the value system of the professional activity for which the university prepares future specialists, the value system of subcultures that arise within the university (academic groups, departments, faculties; teachers, students, administration, etc.) Given the multidirectional incorporation of members of the university community into the system of social relations, it is proposed to consider the culture of quality through the prism of four structural elements - value, normative, sign and symbolic, and managerial components. Taking into account the fact the non-homogeneous nature of the quality culture of each university, its assessment remains problematic both by the university itself and by institutions of external evaluation.
ETHICAL INFRASTRUCTURE OF TARAS SHEVCHENKO NATIONAL UNIVERSITY OF KYIV CULTURAL SPACE:CHALLENGES OF IMPLEMENTATION AND FUNCTIONING
Authors:   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, Rohozha Mariya
Published: February 2024

The article deals with the ethical infrastructure of Taras Shevchenko Kyiv National University cultural space, the peculiarities of its implementation and its functioning due to the challenges facing higher education in Ukraine today. The relevance of studying the ethical provision of university life is driven by the inevitable value transformations that the university as a cultural institution is experiencing today. By the method of case study, the implementation and functioning of the ethical infrastructure at Taras Shevchenko National University of Kyiv is analyzed in the article as a real-time problematic situation. It is shown that the implementation of ethical infrastructure was demanded by the university community and has become a natural process. The thoughtfulness of this process was testified by the thoroughness of preparing the University community code of ethics, carrying out the procedures for its discussion and adoption, and preparing the work of the Standing Commission of the Academic Council on Ethics. It also testified to the moral maturity of the university community to comply with the provisions of the code of ethics, to signal violations of its norms and principles, and to seek the truth in the ethical commission. It is about the grassroots (democratic) way of the creation of the code of ethics. And the discussion, comments and proposals from the structural subdivisions are a kind of public examination of the ethical document. The code of ethics, thus adopted by the university community, has become an effective document that sets a coherent system of coordinates in the life of the university. The purpose of the ethical commission is to resolve controversial issues regarding compliance by members of the university community with the code of ethics. Its powers include advising on the usage of the code of ethics and applying its provisions in everyday university life.
The University as a Platform for Discussions on the Ethical Aspect of Researchers' Creativity
Authors:   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, Korobko Margaryta
Published: February 2024

Creativity is very important for scientists, but, unfortunately, it rarely becomes a topic for discussion within the field of professional ethics of scientists, engineers, physicists, and other figures in science and technology. After all, creativity is often considered a prerogative of artists only, and in this aspect, the moral side of creativity is practically not discussed. The purpose of the article is to show the importance of the moral aspect of creativity and the role of the university in understanding this. General scientific methods were used in the article: analytical, comparative, and generalization. Common from a public perspective is to think about science and technology in terms of the pervasive and ubiquitous practical impact of scientific achievements: electrification, cars, airplanes, water supply, computers, etc. However, to assess the societal impact of science and technology we cannot neglect the moral importance of scientific knowledge itself and the personal commitments of scientists, engineers, and other science-oriented professionals. Personal commitments and ideals include humanitarian, environmental, religious, political, aesthetic, and family obligations. They also include voluntary commitments to adhere the professional standards, especially when these commitments are related to a person's broader value perspective. The university promotes not only the development of scientific creativity among students but also an opportunity to understand the moral problems of their professional activities and obtain possible solutions to these problems in professional and corporate ethics courses. Thus, the university helps students in their future activities as the first platform for discussions on the ethical aspect of researchers' work.