Transactions of Kremenchuk Mykhailo Ostrohradskyi National University最新文献

{"title":"SIMULATION OF THE PROCESS OF CONTROLLED CHARGING OF ELECTRIC VEHICLES IN THE CONDITIONS OF LIMITED ELECTRICITY SUPPLY","authors":"A. Bosak, A. Chermalykh, A. Bosak, V. Dubovyk","doi":"10.30929/1995-0519.2021.3.91-98","DOIUrl":"https://doi.org/10.30929/1995-0519.2021.3.91-98","url":null,"abstract":"Purpose. The purpose of this research is to increase the efficiency of the charging station, which is to meet the demand of energy for charging the batteries of electric vehicles without exceeding the limits of the grid restrictions. Methodology. The model of a controlled charging system was considered to study the efficiency of charging stations with the quantitative connection of electric vehicles to the charger under conditions of power limitation. Results. The load graph during the controlled charging method does not exceed the set limit voltage and power consumption settings, but with the uncontrolled method there is an overload of 16% during peak hours. The main disadvantage of the conventional method of charging with restrictions is that EVs that have been connected to the charging slots later than other EVs, were not charged in conditions of limited power supply. The charging stations require a charging system that does not have such a disadvantage – it is necessary that almost all connected electric vehicles fill their required level of charge and meet the limitations of the network at the same time. Investigating such a system is the task of future research. Originality. Every year the number of electric vehicles in Ukraine is growing rapidly. This also determines the development of a network of charging stations, both commercial and for domestic use. According to the Rules for the use of electricity, the contract for electricity consumption specifies the allowable capacity for the household or enterprise. Violation of this limit may cause the facility to become disconnected from the power supply with additional penalties. Practical value. The solutions to the problem of charging a large number of EVs are mainly based on different types of planning and creating a profile of their charging scenarios with technical limitations. These restrictions depend on the situation of the charging station (the number of connected EVs, their charging levels, the possibility of simultaneous charging for a few EVs, and the declared charging time). The charging period convenient for the EV owner and the network load schedule may conflict. The development of a realtime charging control system should provide each EV guaranteed charging even in conditions of limited power consumption. References 13, tables 4, figures 18.","PeriodicalId":405654,"journal":{"name":"Transactions of Kremenchuk Mykhailo Ostrohradskyi National University","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123544559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"TO THE ISSUE OF PRACTICAL IMPLEMENTATION OF THE REQUIREMENTS FOR DETERMINING THE LOCATIONS OF AUTOMATED POSTS IN THE ATMOSPHERIC AIR MONITORING SYSTEM OF TECHNOGENICALLY INSTALLED URBAN SYSTEMS","authors":"O. Kortsova, Irina Soloshych, V. Bakharev","doi":"10.30929/1995-0519.2021.3.36-44","DOIUrl":"https://doi.org/10.30929/1995-0519.2021.3.36-44","url":null,"abstract":"Purpose. The results of theoretical and analytical-calculation studies on the substantiation of the automatic stationary post location of constant control (PCC) in the zone of probable influence of the industrial enterprise PJSC «Kryvyi Rih Cement» (Kryvyi Rih) with the determination of the expected contribution of this object to the general atmospheric air pollution level. Methodology. The requirements for the organization of observations of the atmospheric air state and the specific choice of stationary sampling points are generalized. Method of calculating the scattering of pollutants is used. Results. A set of indicators and characteristics that affect the processes of atmospheric air pollution formation in the area of the probable negative impact of the industrial facility is determined. The conditions of PCC location are detailed specifically for the conditions of technogenic loaded urban systems. On this basis, a priority place for the installation of a stationary automated post of constant control and monitoring of air pollution in the area of the industrial enterprise PJSC «Kryvyi Rih Cement» influence has been specified. The calculation of the scattering of pollutants in the surface layer of the atmosphere using the software package «EOL +» to determine the expected level of pollutants concentrations present in the emissions of the object at a certain PCC location, as well as at the SPZ to determine the expected maximum contribution of this object to the overall level of air pollution. The maximum expected calculated values of surface concentrations at the location of the PCC are from 0.01 for sulfur dioxide to 0.21 MPa for the summation group № 31. Originality. The requirements and conditions of the automated monitoring stations location in the areas of the negative impact of industrial facilities are summarized, which allows to clearly and reasonably determining the priority location of the control panel. Practical value. The results of the research have been practically implemented. The control panel has been installed and is working successfully, as evidenced by the data of the city web portal «Ecomonitoring» in Kryvyi Rih – https://www.krmisto.gov.ua/ua/rc/ecomon.html. The social significance of the research is both in the participation of the industrial facility in the system of automated observations and assessment of air quality and in informing the inhabitants of man-made urban systems on the environment state. References 13, tables 3, figures 4.","PeriodicalId":405654,"journal":{"name":"Transactions of Kremenchuk Mykhailo Ostrohradskyi National University","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131576702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"METHODOLOGICAL APPROACHES TO THE FORMATION OF PROFESSIONAL MOBILITY OF FUTURE TEACHERS","authors":"Iryna Gerasymova, Tetiana Halych, Vitalina Derun","doi":"10.30929/1995-0519.2021.3.17-23","DOIUrl":"https://doi.org/10.30929/1995-0519.2021.3.17-23","url":null,"abstract":"Purpose. The necessity of quick reaction to today challenges, improving the quality of modern training causes the formation of professional mobility of future teachers. So appear the problem of methodological support for training, finding appropriate approaches to ensure its effectiveness. Methodology. The methodological basis of the research consists of the philosophical propositions of dialectical unity of teaching theory and practice, conceptual propositions of philosophy, pedagogic and psychology though the prism of andragogical, contextual and gender approaches in the training of future teacher in higher education; fundamental works in the field of theory of professional education and activity; propositions of the role of continuing professional education in the process of forming competencies that ensure the professional mobility of the modern teacher. Results. The manifestation of professional mobility at the activity level and at the individual level with the corresponding characteristics is shown. The dependence of the essential content of professional mobility from its specifics of the industry to the features in the field of education is indicated. In the article are grounded methodological approaches to the formation of professional mobility of future teachers – andragogical, contextual and gender; the analyses of each of them with account their aggregate influence on formation of professional mobility. Originality. For the first time in the science of our country based on the analyses and generalization of scientific works of foreign and Ukrainian scientists, the expediency of relying on andragogical, contextual and gender approaches in the formation of professional mobility is substantiated. The need for a gradual transition to andragogical training in the Free Economic Zone has been identified. The generalization of the contextual approach potential confirmed the expediency of its use in professional mobility formation, as its provisions are consistent with the requirements for ensuring the quality of training of future teachers. It is determined that the application of a gender approach in the educational process provides opportunities for professional self-realization of different sexes members. Practical value. Developed methodological approaches to the formation of professional mobility of future teachers can be used in the educational process of high education institutions, in the system of non-formal education, as well as in the training of research and teaching staff in the system of advanced training. References 15, tables 1.","PeriodicalId":405654,"journal":{"name":"Transactions of Kremenchuk Mykhailo Ostrohradskyi National University","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116995505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SHORT-TERM ACOUSTIC WATER TREATMENT","authors":"I. Koval","doi":"10.30929/1995-0519.2021.3.30-35","DOIUrl":"https://doi.org/10.30929/1995-0519.2021.3.30-35","url":null,"abstract":"Purpose. To investigate the process of treatment of different waters with short-term action of acoustic cavitation and to establish the expediency of simultaneous bubbling of different gases into the reaction medium and cavitation. Methodology. The duration of the disaggregation process during the processing of the model medium is 2–3 minutes, while for natural water – 30 minutes. The number of microorganisms (NM) before and after the experiments was determined by counting the colonies that grew on the Petri dishes. For the research we used a model medium based on distilled water with the addition of bacillary cells and natural water. The model environment was exposed to gases of different nature and acoustic cavitation, and natural water was treated only by cavitation. Results. It was found that the process of water purification consists of two processes: the accumulation of microbial counts caused by the destruction of microbial aggregates and the reduction of microbial counts caused by the destruction of microbial cells. Such stages are revealed both at acoustic processing of the microbic water formed on the basis of disaerated distilled water, and natural. It has been experimentally shown that the use of bubbling gases accelerates the disaggregation process by almost 10 times. The proposed method of treatment of different waters with short-term exposure allowed to detect the process of disaggregation of microbial cells with their subsequent destruction in the aqueous medium and to achieve a high degree of water disinfection. Originality. The article proposes the supply of gases of different nature in the reaction medium for disinfection of water from bacteria under cavitation. It has been proven that gas supply during the first three minutes of the process accelerates the breakdown of aggregate aggregates in the aquatic environment under acoustic conditions, which is associated with the formation of additional cavitation nuclei, compared to the process in the absence of gas supply. It was found that at the initial moment of the reaction, the energy of cavitation was spent on breaking up clusters of bacterial aggregates into single cells, and death occurs more slowly than disaggregation. Practical value. It has been experimentally proved that the accumulation of microbial counts in the first stage of the water purification process with short-term action of acoustic cavitation is due to the processes of disaggregation of microorganisms. References 27, figures 2.","PeriodicalId":405654,"journal":{"name":"Transactions of Kremenchuk Mykhailo Ostrohradskyi National University","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131507302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ASSESSMENT OF ECOLOGICAL SAFETY STATE OF THE KREMENCHUK RESERVOIR AQUATORIUM FOR THE PRESERVATION OF LANDSCAPE-BIOLOGICAL DIVERSITY IN CLIMATE CHANGE CONDITIONS","authors":"Dmytro Kolyesnik, V. Shmandiy, O. Kharlamova, Tatyana Rygas","doi":"10.30929/1995-0519.2021.3.24-29","DOIUrl":"https://doi.org/10.30929/1995-0519.2021.3.24-29","url":null,"abstract":"Purpose. The problem of preserving the landscape-biological diversity and ecological safety of fresh waters of the reservoirs of the Dnieper cascade is quite relevant due to its growing deficit in the face of climate change. In reservoirs, the coastline is eroding, causing changes in natural landscapes. Almost everywhere, fresh water pollution is growing and becoming more diverse, as a result of which water becomes unfit not only for drinking or the existence of aquatic organisms, but also for technical purposes. When determining the need for water, it is also important to take into account the own needs of aquatic ecosystems in the water quantity and quality. Fresh water is the most important component of nature with a high rate of biodiversity. It is a medium-higher habitat for many species of living organisms, both aquatic and semi-aquatic, providing purity and self-restoration of surface water quality. Fresh water ecosystems are closely linked to terrestrial ecosystems by thousands of different connections that ensure balance in nature. Therefore, biodiversity conservation is important. Methodology. The research was performed using phytoindication, the method of determining the anatomical and morphological changes of plant indicators. Results. The state of ecological safety of surface waters was assessed using indicators of anatomical and morphological changes of indicator plants, which allow drawing conclusions about the resistance of the ecosystem to harmful factors, as well as the need for additional, more accurate physicochemical studies. The object of the research is the Kremenchuk reservoir, the largest among the reservoirs of the Dnieper cascade. The ecological danger formed in it extends both to the coastal part of the water area and reaches the Black Sea. It is the need for additional physical and chemical tests to accurately identify sources of impact on the water of the Kremenchuk reservoir near the Svitlovodsk and further development of measures to ensure the ecological safety. Originality. For the first time is conducted a study of the ecological safety of the Kremenchuk Reservoir waters by the phytoindication method. According to this study, is demonstrated the effectiveness and simplicity of environmental monitoring using bioindication methods. Practical value. According to this study, we demonstrate the effectiveness and simplicity of environmental monitoring using phytoindication methods. References 14, tables 1, figures 3.","PeriodicalId":405654,"journal":{"name":"Transactions of Kremenchuk Mykhailo Ostrohradskyi National University","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121236916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"USE OF GAUSS FUNCTIONS FOR APPROXIMATION OF BIOLOGICAL SIGNALS","authors":"V. Mospan, D. Mospan, O. Fomovskaya, F. Fomovskii, A. Yurko","doi":"10.30929/1995-0519.2021.3.111-116","DOIUrl":"https://doi.org/10.30929/1995-0519.2021.3.111-116","url":null,"abstract":"Purpose. Currently, the method of mathematical analysis of various biological signals is increasingly used in medicine. Most of them are random and quasi-periodic processes, which greatly complicates the possibility of using an automated data processing process. Signals of this type include respiratory noises, phonocardiographic and electrocardiographic signals. The shape of the waves of the ECG signal is quite accurately described by asymmetric Gaussian pulses. It is possible to achieve the required approximation accuracy by introducing additional pulses to describe the diagnostically important inhomogeneities of the signal. In the previous work of the authors the simple algorithm of coefficients selection of asymmetric functions in the form of the Labview virtual device is realized. But for the cases of superposition of waves of different polarity and non-standard pulse shapes, the result of applying this algorithm gives a significant error. Methodology. In the analysis of waves of negative polarity, the presence of a positive burst, even a small value, leads to a complete disregard for the negative wave. To eliminate this shortcoming, it is necessary to determine the maximum and minimum values of the amplitudes of the samples in this area and compare their absolute values. A larger value will determine the polarity of the wave coming to the virtual instrument for analysis. The next complication is the presence of a wide flat wave top with an offset maximum value by extreme samples. This is a significant shift in the symmetry of the wave and, as a consequence, incorrect determination of parameters for a wide part of the pulse. To eliminate this shortcoming, it is proposed to determine all the influential extremes, and shift the center of symmetry to the middle of the flat top of the wave. In the case where the wave has a significant violation of symmetry, it is possible that the virtual device determines the midpoints and amplitudes of the left to right parts with a significant deviation from the actual peak value. To prevent the vertices of the Gaussian functions from shifting relative to the real maximum it was proposed to mirror the data sets corresponding to the left and right parts of the wave. Results. In this article, the algorithm of the virtual device operation for automatic determination of the parameters of the approximate asymmetric Gaussian curves in the Labview software environment is improved. It is planned to use approximation by Gaussian impulses to synthesize standard leads from reduced sets of ECG signal leads. According to preliminary studies, a surface of approximation coefficients has been created, which allows synthesizing a cardiac signal for an arbitrary derivation. Originality. Algorithm for approximating biological signals by asymmetric Gaussian functions is improved. In this case, a more confident approximation of waves was obtained in the presence of: bursts of opposite polarity; wide flat top of the wave when the m","PeriodicalId":405654,"journal":{"name":"Transactions of Kremenchuk Mykhailo Ostrohradskyi National University","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125228771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"POSSIBILITIES OF USING 3D-PRINTING TECHNOLOGIES IN DESIGN AND PRODUCTION OF ENERGY RECOVERY MECHANISM WITH PNEUMATIC MOTOR","authors":"Mykola Yatsyna, V. Kholodnyi, V. Kulynych, Iryna Pieieva","doi":"10.30929/1995-0519.2021.3.76-83","DOIUrl":"https://doi.org/10.30929/1995-0519.2021.3.76-83","url":null,"abstract":"Purpose. Investigate and propose new possibilities of using 3D-printing technologies in designing and manufacturing mechanism of energy recovery with pneumatic motor. Methodology. We have applied the experimental simulation of pneumatic motor, it’s construction and work. Energy recovery mechanism was simulated and it’s parts was created using 3d technology. Results. The existing technologies of 3D printing, types and structure of 3D printers for design and manufacture of special equipment for the energy recovery mechanism with a pneumatic motor are analyzed and considered in detail. The main materials for printing are considered, as well as carbon-containing materials for FDM printing, their properties and characteristics are considered in detail. The kinematic analysis of the printer mechanism for delta type 3D printing is carried out, the positioning errors for this mechanism type are determined. Measurement of the obtained part and processing of statistical data were carried out. The obtained holes of the part are compared with the given nominal values, and the absolute error for the outer and inner diameters is calculated. Originality. For the first time, the roughness of the delta robot rods was calculated, and the structure stress state under the applied forces action was calculated. Practical value. Having analyzed all the above information on the 3D printing using possibility in the special equipment manufacture and parts of the energy recovery mechanism with a pneumatic motor, it is possible to conclude that the special materials and the latest technologies use can reduce the recuperator weight with the required structural elements strength. The information and results obtained in this study actually correlate with similar researches. In addition, they also have a necessary and sufficient basis in order to conduct research on the use of 3D technology for the manufacture of parts and components. References 16, table 1, figures 14.","PeriodicalId":405654,"journal":{"name":"Transactions of Kremenchuk Mykhailo Ostrohradskyi National University","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133554804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EFFECT OF LIGHTNING CURRENTS OF NEGATIVE AND POSITIVE POLARITY ON SURGE ARRESTER","authors":"Y. Trotsenko, Volodymyr Brzhezitskyy, O. Yandulskyy, Artem Nesterko, M. Dixit","doi":"10.30929/1995-0519.2021.3.84-90","DOIUrl":"https://doi.org/10.30929/1995-0519.2021.3.84-90","url":null,"abstract":"Purpose. The study of surge arrester models using oscillograms of real lightning currents and taking into account the polarity of lightning has been further developed. Methodology. Methods of circuit simulation for electrical scheme modes, free software for digitizing a bitmap graphic image of a lightning current oscillogram and converting it into an array of points are used. Results. A studying the model of a typical surge arrester with a nominal discharge current of 10 kA, intended for use in a 10 kV network was carried out. A well-known dynamic (frequency-dependent) model proposed by the IEEE working group was used to simulate the surge arrester. Oscillograms of real lightning currents of negative and positive polarity which were recorded on special towers were digitized. Using a free circuit simulation program, the residual voltage at the terminals of the surge arrester was determined and the energy that the surge arrester should absorb in the event that lightning currents of different waveforms and polarities flow through it, but with the same amplitude of 10 kA. It has been found that positive lightning strikes are potentially more dangerous than negative lightning strikes. It was shown that before the ending of the positive lightning current, the surge arrester have to absorb more than ten times more energy than before the ending of the negative lightning current of the same amplitude. Further development of the proposed approach is seen in its use for the tasks of improving the lightning protection of overhead power lines and protecting the high-voltage insulation of electrical equipment of substations from lightning overvoltage. Originality. The approach takes into account the differences between impulses of lightning currents of negative and positive polarity, which cannot be achieved when using the approximation of lightning currents by simplified expressions. Practical value. The use of the proposed approach improves the accuracy and visualization of research, since it takes into account the actual features of the lightning current curve. References 20, figures 12.","PeriodicalId":405654,"journal":{"name":"Transactions of Kremenchuk Mykhailo Ostrohradskyi National University","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131591697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"INFLUENCE OF FINE DISPERSED INERT SOLID PARTICLES IN CHARGE ON SOLID MEDIA SOFTENING","authors":"V. Kulynych, І. Pieieva, V. Vorobyov, L. Vorobyova, V. Chebenko","doi":"10.30929/1995-0519.2021.2.88-93","DOIUrl":"https://doi.org/10.30929/1995-0519.2021.2.88-93","url":null,"abstract":"","PeriodicalId":405654,"journal":{"name":"Transactions of Kremenchuk Mykhailo Ostrohradskyi National University","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134009421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"INTEGRATIVE APPROACH TO TEACHING STUDENTS IN NATURAL SCIENCES","authors":"G. Burlak, L. Vilinskaya, A. Pysarenko, A. Vasilenko","doi":"10.30929/1995-0519.2021.2.23-29","DOIUrl":"https://doi.org/10.30929/1995-0519.2021.2.23-29","url":null,"abstract":"","PeriodicalId":405654,"journal":{"name":"Transactions of Kremenchuk Mykhailo Ostrohradskyi National University","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114560718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}