Pub Date : 2023-08-30DOI: 10.20998/2220-4784.2023.01.06
O. Yefimov, Valery Kavertsev, L. Tiutiunyk, T. Harkusha, A. Motovilnik, Igor Sydorkin
The materials of the article consider the main methodological provisions of calculations and optimization of NPP power unit equipment parameters using mathematical modeling methods. For the effective implementation of tasks related to determining the optimal parameters and structures of NPP power unit equipment using mathematical modeling and well-developed multifactor optimization methods, it is necessary to fulfill a number of requirements at their productions. Practice shows that it is impractical to optimize with the help of a single mathematical (simulation) model the entire set of parameters characterizing a given power unit, because with such a formulation, the optimization tasks are often mutually incorrect due to a significant discrepancy in the accuracy of various source information, unequal influence of parameters on the target function, specific differences in the mathematical description of various units and elements of the power unit. In order to effectively optimize the parameters of NPP power units, it is necessary to create a system of interconnected mathematical models, which include: a group of detailed mathematical models of individual units and elements of power unit equipment; more generalized mathematical models for the main equipment of power units built on their basis; complete mathematical model of power units.
{"title":"OPTIMIZATION OF OPERATING MODES OF POWER UNITS OF NUCLEAR POWER PLANTS","authors":"O. Yefimov, Valery Kavertsev, L. Tiutiunyk, T. Harkusha, A. Motovilnik, Igor Sydorkin","doi":"10.20998/2220-4784.2023.01.06","DOIUrl":"https://doi.org/10.20998/2220-4784.2023.01.06","url":null,"abstract":"The materials of the article consider the main methodological provisions of calculations and optimization of NPP power unit equipment parameters using mathematical modeling methods. For the effective implementation of tasks related to determining the optimal parameters and structures of NPP power unit equipment using mathematical modeling and well-developed multifactor optimization methods, it is necessary to fulfill a number of requirements at their productions. Practice shows that it is impractical to optimize with the help of a single mathematical (simulation) model the entire set of parameters characterizing a given power unit, because with such a formulation, the optimization tasks are often mutually incorrect due to a significant discrepancy in the accuracy of various source information, unequal influence of parameters on the target function, specific differences in the mathematical description of various units and elements of the power unit. In order to effectively optimize the parameters of NPP power units, it is necessary to create a system of interconnected mathematical models, which include: a group of detailed mathematical models of individual units and elements of power unit equipment; more generalized mathematical models for the main equipment of power units built on their basis; complete mathematical model of power units.","PeriodicalId":9496,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Innovation researches in students’ scientific work","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81969374","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}
Pub Date : 2023-08-30DOI: 10.20998/2220-4784.2023.01.08
Olesia Bilous
The article presents the developed innovative system of teaching the discipline «Basic theory of health and healthy lifestyle» for students of the specialty 017 «Physical culture and sports». Keys to a comprehensive and deep understanding of health are provided. A list of topics for lectures and practical classes covering all aspects of health - physical, psychological, social - has been compiled. The contingent of students of the discipline and the urgent needs of today are taken into account. In each of the topics, there is an analysis of why this is happening, and then there is a practical toolkit of what to do, again, with an explanation of why this is so. The analysis is from a biochemical, physiological, and psychological point of view. Social factors and world experience in sports and physical culture are taken into account. Variants of scientific game tasks are provided. Measures are provided for students to express themselves in individual and team work. Descriptions of work in classrooms, gyms, and at home are given. The course was implemented at the Department of Physical Education of the National Technical University «Kharkiv Polytechnic Institute» for the specialty 017 «Physical Culture and Sports» of full-time students in the subject «Basic theory of health and healthy lifestyle».
{"title":"INNOVATIVE MEASURES OF TEACHING THE DISCIPLINE «BASIC THEORY OF HEALTH AND HEALTHY LIFESTYLE» FOR STUDENTS OF SPECIALTY 017 «PHYSICAL EDUCATION AND SPORTS»","authors":"Olesia Bilous","doi":"10.20998/2220-4784.2023.01.08","DOIUrl":"https://doi.org/10.20998/2220-4784.2023.01.08","url":null,"abstract":"The article presents the developed innovative system of teaching the discipline «Basic theory of health and healthy lifestyle» for students of the specialty 017 «Physical culture and sports». Keys to a comprehensive and deep understanding of health are provided. A list of topics for lectures and practical classes covering all aspects of health - physical, psychological, social - has been compiled. The contingent of students of the discipline and the urgent needs of today are taken into account. In each of the topics, there is an analysis of why this is happening, and then there is a practical toolkit of what to do, again, with an explanation of why this is so. The analysis is from a biochemical, physiological, and psychological point of view. Social factors and world experience in sports and physical culture are taken into account. Variants of scientific game tasks are provided. Measures are provided for students to express themselves in individual and team work. Descriptions of work in classrooms, gyms, and at home are given. The course was implemented at the Department of Physical Education of the National Technical University «Kharkiv Polytechnic Institute» for the specialty 017 «Physical Culture and Sports» of full-time students in the subject «Basic theory of health and healthy lifestyle».","PeriodicalId":9496,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Innovation researches in students’ scientific work","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82453963","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}
Pub Date : 2023-08-30DOI: 10.20998/2220-4784.2023.01.09
E. Chernushenko, Oksana Saevich, Anna Novik Anna
To preserve and strengthen the health of young people, one of the tasks of the state in the field of healthy nutrition is the development of the production of functional food products enriched with essential water- and fat-soluble vitamins; development of additives of biologically active substances and orientation of higher education to improve the level of education of students of the valeological direction, and the introduction of relevant topics, subjects in the educational process of higher educational institutions. The article is devoted to the problem of monitoring vitamins in the nutrition of student youth in modern conditions. With the help of a questionnaire and a method for determining the content of water- and fat-soluble vitamins in the daily diet, non-compliance with the principles of rational nutrition by full-time students was revealed, which negatively affects their health. For all full-time students, there is a deficiency in the intake of vitamins D 70%, C 62.5%, B9 60% and biotin 74%. The average content of vitamin C in diets for girls is 1.03 times lower than the norm, for boys it is 1.27 times lower than the norm. The intake of vitamins B2, B6, B12 and B5 with diets exceeds the recommended values. The study of the quality of diets of junior students showed that the majority of students have a polydeficient diet, unbalanced in terms of water- and fat-soluble vitamins, as well as a lack of a conscious attitude to nutrition. A low level of skills and abilities of students in organizing their own meals was revealed. An insufficient level of knowledge about proper nutrition is a potential factor in the deterioration of health, the emergence of primary and secondary alimentary diseases, and a decrease in mental performance. The ways of increasing the level of knowledge in practical nutrition of students of higher education and ways of solving the problem of balanced nutrition of students as an effective condition for improving their health as an effective condition for improving their health are proposed. It has been established that one of the priority tasks of our time is to increase the level of education of student youth on healthy nutrition.
{"title":"HYGIENIC ASSESSMENT OF VITAMIN CONSUMPTION BY STUDENTS UNDER STRESS","authors":"E. Chernushenko, Oksana Saevich, Anna Novik Anna","doi":"10.20998/2220-4784.2023.01.09","DOIUrl":"https://doi.org/10.20998/2220-4784.2023.01.09","url":null,"abstract":"To preserve and strengthen the health of young people, one of the tasks of the state in the field of healthy nutrition is the development of the production of functional food products enriched with essential water- and fat-soluble vitamins; development of additives of biologically active substances and orientation of higher education to improve the level of education of students of the valeological direction, and the introduction of relevant topics, subjects in the educational process of higher educational institutions. The article is devoted to the problem of monitoring vitamins in the nutrition of student youth in modern conditions. With the help of a questionnaire and a method for determining the content of water- and fat-soluble vitamins in the daily diet, non-compliance with the principles of rational nutrition by full-time students was revealed, which negatively affects their health. For all full-time students, there is a deficiency in the intake of vitamins D 70%, C 62.5%, B9 60% and biotin 74%. The average content of vitamin C in diets for girls is 1.03 times lower than the norm, for boys it is 1.27 times lower than the norm. The intake of vitamins B2, B6, B12 and B5 with diets exceeds the recommended values. The study of the quality of diets of junior students showed that the majority of students have a polydeficient diet, unbalanced in terms of water- and fat-soluble vitamins, as well as a lack of a conscious attitude to nutrition. A low level of skills and abilities of students in organizing their own meals was revealed. An insufficient level of knowledge about proper nutrition is a potential factor in the deterioration of health, the emergence of primary and secondary alimentary diseases, and a decrease in mental performance. The ways of increasing the level of knowledge in practical nutrition of students of higher education and ways of solving the problem of balanced nutrition of students as an effective condition for improving their health as an effective condition for improving their health are proposed. It has been established that one of the priority tasks of our time is to increase the level of education of student youth on healthy nutrition.","PeriodicalId":9496,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Innovation researches in students’ scientific work","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88808254","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}
Pub Date : 2023-08-30DOI: 10.20998/2220-4784.2023.01.11
Svetlana Bukhkalo, Anna Ageicheva, Oleksandr Belyanskiy, Maryna Moskalenko, Zhanna Derkunska, S. Iglin
The importance of teaching students at higher educational institutions by innovating study methods is investigated. Main innovative approaches were investigated. The usage of cases and projects in classes are studied. It is discussed that classic case promotes the development of independent decision-making skills, the second purpose of working with the case in the classroom is a communicative practice. It is described possible projects in the article. Innovative approaches for the formation of critical thinking skills is described in the article. It was determined that the systematic usage of the innovative approaches at higher educational institutions makes gave possibillity to effectively soft skills formation.
{"title":"INNOVATIVE APPROACHES TO TEACHING AT HIGHER EDUCATIONAL INSTITUTIONS IN EXAMPLES AND TASKS","authors":"Svetlana Bukhkalo, Anna Ageicheva, Oleksandr Belyanskiy, Maryna Moskalenko, Zhanna Derkunska, S. Iglin","doi":"10.20998/2220-4784.2023.01.11","DOIUrl":"https://doi.org/10.20998/2220-4784.2023.01.11","url":null,"abstract":"The importance of teaching students at higher educational institutions by innovating study methods is investigated. Main innovative approaches were investigated. The usage of cases and projects in classes are studied. It is discussed that classic case promotes the development of independent decision-making skills, the second purpose of working with the case in the classroom is a communicative practice. It is described possible projects in the article. Innovative approaches for the formation of critical thinking skills is described in the article. It was determined that the systematic usage of the innovative approaches at higher educational institutions makes gave possibillity to effectively soft skills formation.","PeriodicalId":9496,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Innovation researches in students’ scientific work","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85324300","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}
Pub Date : 2023-08-30DOI: 10.20998/2220-4784.2023.01.03
Svetlana Bukhkalo, Anna Ageicheva Anna, Inesa Rozhenko, Svitlana Shkil
The importance of teaching students a foreign language by innovating study methods is investigated. It is being set that it is necessary to strengthen the communicative component when teaching a foreign language as a foreign language. The usage of cases in classes are investigated. It is studied that classic case promotes the development of independent decision-making skills, the second purpose of working with the case in the classroom is a communicative practice. It is described possible cases and presents the development of the proposed concept in the article. Case study technology for the formation of critical thinking skills is described in the article. It was determined that the systematic use of the case study method in the study of the English language makes it possible to effectively form critical thinking skills. The use of various methods and techniques of active learning arouses students' interest in the educational and cognitive activity itself, which enables creating an atmosphere of motivated, creative learning and at the same time solving a whole range of educational, educational, developmental tasks.
{"title":"INNOVATIVE LEARNING METHODS DURING SEMINAR CLASSES AT HIGHER EDUCATIONAL INSTITUTIONS","authors":"Svetlana Bukhkalo, Anna Ageicheva Anna, Inesa Rozhenko, Svitlana Shkil","doi":"10.20998/2220-4784.2023.01.03","DOIUrl":"https://doi.org/10.20998/2220-4784.2023.01.03","url":null,"abstract":"The importance of teaching students a foreign language by innovating study methods is investigated. It is being set that it is necessary to strengthen the communicative component when teaching a foreign language as a foreign language. The usage of cases in classes are investigated. It is studied that classic case promotes the development of independent decision-making skills, the second purpose of working with the case in the classroom is a communicative practice. It is described possible cases and presents the development of the proposed concept in the article. Case study technology for the formation of critical thinking skills is described in the article. It was determined that the systematic use of the case study method in the study of the English language makes it possible to effectively form critical thinking skills. The use of various methods and techniques of active learning arouses students' interest in the educational and cognitive activity itself, which enables creating an atmosphere of motivated, creative learning and at the same time solving a whole range of educational, educational, developmental tasks.","PeriodicalId":9496,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Innovation researches in students’ scientific work","volume":"102 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78161556","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}
Pub Date : 2023-08-30DOI: 10.20998/2220-4784.2023.01.07
Elena Chernushenko, Tamara Ahaian, Denis Kravchenko
In the world, a large number of workers are exposed to fumes, mists and dusts containing Chromium and its compounds. One of the ways to prevent chromium intoxication is the enrichment of food rations with substances that have antioxidant and complexing ability. Attention is focused on the recommendations on the use of sulfur-containing amino acids and sulfur-rich proteins in the composition of food products for the prevention of intoxication in workers who come into contact with chromium in production. The mechanism of reduction of hexavalent chromium compounds by cysteine was considered. It has been shown that the process of reduction of chromates with cysteine is accompanied by the oxidation of cysteine to cystine and subsequent complexation with trivalent chromium. The structure of chromium III cystinate was confirmed by IR and electron spectroscopy and elemental analysis. It has been established that in the formed chelate complex [Cr(SNO2C3H6)6Cr], chromium (III) has a bond with cystine through the amino and carboxyl groups, LD50 is 2100 mg/kg and is less toxic than inorganic chromium (III) salts. The article analyzes protein raw materials rich in cysteine, which can be recommended to satisfy the daily requirement of cysteine, or to reduce chromium intoxication of workers working in a work area with a high content of chromium salts.
{"title":"THE ROLE OF SULFUR-CONTAINING AMINO ACIDS IN THE PREVENTIVE NUTRITION OF WORKERS IN CONTACT WITH CHROMIUM","authors":"Elena Chernushenko, Tamara Ahaian, Denis Kravchenko","doi":"10.20998/2220-4784.2023.01.07","DOIUrl":"https://doi.org/10.20998/2220-4784.2023.01.07","url":null,"abstract":"In the world, a large number of workers are exposed to fumes, mists and dusts containing Chromium and its compounds. One of the ways to prevent chromium intoxication is the enrichment of food rations with substances that have antioxidant and complexing ability. Attention is focused on the recommendations on the use of sulfur-containing amino acids and sulfur-rich proteins in the composition of food products for the prevention of intoxication in workers who come into contact with chromium in production. The mechanism of reduction of hexavalent chromium compounds by cysteine was considered. It has been shown that the process of reduction of chromates with cysteine is accompanied by the oxidation of cysteine to cystine and subsequent complexation with trivalent chromium. The structure of chromium III cystinate was confirmed by IR and electron spectroscopy and elemental analysis. It has been established that in the formed chelate complex [Cr(SNO2C3H6)6Cr], chromium (III) has a bond with cystine through the amino and carboxyl groups, LD50 is 2100 mg/kg and is less toxic than inorganic chromium (III) salts. The article analyzes protein raw materials rich in cysteine, which can be recommended to satisfy the daily requirement of cysteine, or to reduce chromium intoxication of workers working in a work area with a high content of chromium salts.","PeriodicalId":9496,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Innovation researches in students’ scientific work","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89948988","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}
Pub Date : 2023-08-30DOI: 10.20998/2220-4784.2023.01.01
Alla Denysova, O. Zhaivoron
In the article analytical studies of the efficiency of heat pumps in the thermal schemes of thermal and nuclear power plants for centralized heating and hot water supply systems taking into account the climatic conditions of Ukraine have been carried out. This task meets the objectives of energy saving and reduces emissions of harmful substances into the environment. The main focus is on improving the efficiency of the heat pump power supply system, which integrates an alternative energy source. An analysis of the exergy parameters of heat pump cycles has been performed, which have made it possible to establish that the most efficient working fluid of the cycle is freon R152a, at which the highest heat pump conversion coefficient and the lowest compressor power indicator are achieved. Ways and methods leading to reduction to underproduction of the electricity by turbine of of power plant and to increasation of the efficiency of a steam turbine cycle are proposed. It is shown that the efficiency of the system is most affected by losses in the evaporator, so the efficiency of this element of the heat pump should be given the most attention when using the energy of circulating water. An additional aspect of the novelty of the proposed method lies in the possibility of further optimization of the technical and economic parameters of the power system. A methodology based on the use of the exergy method of analysis to substantiate the conditions for the rational use of heat pumps for power plants in the utilization of low-grade heat of circulating water for cooling the turbine condensers is proposed, which can be considered as innovative way. Results open the further prospects for the development of heat pump heat supplyhas been proposed.
{"title":"INCREASING THE EFFICIENCY OF HEAT PUMP USING CIRCULATING WATER OF POWER PLANTS","authors":"Alla Denysova, O. Zhaivoron","doi":"10.20998/2220-4784.2023.01.01","DOIUrl":"https://doi.org/10.20998/2220-4784.2023.01.01","url":null,"abstract":"In the article analytical studies of the efficiency of heat pumps in the thermal schemes of thermal and nuclear power plants for centralized heating and hot water supply systems taking into account the climatic conditions of Ukraine have been carried out. This task meets the objectives of energy saving and reduces emissions of harmful substances into the environment. The main focus is on improving the efficiency of the heat pump power supply system, which integrates an alternative energy source. An analysis of the exergy parameters of heat pump cycles has been performed, which have made it possible to establish that the most efficient working fluid of the cycle is freon R152a, at which the highest heat pump conversion coefficient and the lowest compressor power indicator are achieved. Ways and methods leading to reduction to underproduction of the electricity by turbine of of power plant and to increasation of the efficiency of a steam turbine cycle are proposed. It is shown that the efficiency of the system is most affected by losses in the evaporator, so the efficiency of this element of the heat pump should be given the most attention when using the energy of circulating water. An additional aspect of the novelty of the proposed method lies in the possibility of further optimization of the technical and economic parameters of the power system. A methodology based on the use of the exergy method of analysis to substantiate the conditions for the rational use of heat pumps for power plants in the utilization of low-grade heat of circulating water for cooling the turbine condensers is proposed, which can be considered as innovative way. Results open the further prospects for the development of heat pump heat supplyhas been proposed.","PeriodicalId":9496,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Innovation researches in students’ scientific work","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78888353","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}
The materials of the article consider the possibilities for determining the educational goals of university students for the purpose of developing the discipline Innovative restaurant technologies, Commodity science and procurement management for the development of complex projects. When writing the article, the experience of teaching the disciplines General Food Production Technologies, Food Chemistry and Modern Food Technologies at the National Technical University "Kharkiv Polytechnic Institute" at the Department of Integrated Technologies, Processes and Devices in 2002–2023 was used. Complex systems for determining the components of the discipline determined competence and quality material, and the issues under consideration are overlooked through the prism of one's own creative perception, which makes the material especially valuable. Developments are carried out using modern highly effective science-based technologies of food production, for example, from types of classification-identification analysis, general concepts and requirements to types of methodology for determining quality indicators of the quality level and their evaluation through the selection of calculation algorithms at various stages of production and use of the obtained goods.
{"title":"EXAMPLES OF COMPLEX TEACHING OF DISCIPLINES – INNOVATIVE RESTAURANT TECHNOLOGIES, COMMODITY SCIENCE AND PURCHASING MANAGEMENT","authors":"Svetlana Bukhkalo, Nataliia Yakymenkо- Tereshchenko","doi":"10.20998/2220-4784.2023.01.02","DOIUrl":"https://doi.org/10.20998/2220-4784.2023.01.02","url":null,"abstract":"The materials of the article consider the possibilities for determining the educational goals of university students for the purpose of developing the discipline Innovative restaurant technologies, Commodity science and procurement management for the development of complex projects. When writing the article, the experience of teaching the disciplines General Food Production Technologies, Food Chemistry and Modern Food Technologies at the National Technical University \"Kharkiv Polytechnic Institute\" at the Department of Integrated Technologies, Processes and Devices in 2002–2023 was used. Complex systems for determining the components of the discipline determined competence and quality material, and the issues under consideration are overlooked through the prism of one's own creative perception, which makes the material especially valuable. Developments are carried out using modern highly effective science-based technologies of food production, for example, from types of classification-identification analysis, general concepts and requirements to types of methodology for determining quality indicators of the quality level and their evaluation through the selection of calculation algorithms at various stages of production and use of the obtained goods.","PeriodicalId":9496,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Innovation researches in students’ scientific work","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88762831","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}
Pub Date : 2023-08-30DOI: 10.20998/2220-4784.2023.01.04
Olga Prishchenko, Tetyana Chernogor
The article deals with the construction of a mathematical model of the process, which is created based on the results of a full factorial experiment. Often, only the results of experimental studies carried out at such objects are the information, based on the processing of which, according to the obtained mathematical model of the object, a high-quality control algorithm for this object can be implemented. At the same time, the construction of a mathematical model that describes the technological process with the required accuracy often involves a huge amount of work at the stage of experiments. The task of planning experiments is to establish the minimum required number of them and the conditions for their implementation, to choose methods for mathematical processing of the results, and to make decisions. Designing experiments significantly reduces the number of experiments required to obtain a process model. An active experiment involves a purposeful choice of factor values. Compared to a passive experiment, such an experiment turns out to be more efficient and economical, since the amount of experimental work is significantly reduced. In this article, in relation to chemical technology, the issues of organizing an experiment, mathematical processing of experimental data and mathematical planning of an experiment in the search for optimal conditions for conducting a technological process are described. Mathematical modeling and optimization of chemical technology objects is of great importance for obtaining higher professional education for students of the Educational and Scientific Institute of Chemical Technology and Engineering.
{"title":"CONSTRUCTION OF STATISTICAL MODELS OF CHEMICAL AND TECHNOLOGICAL OBJECTS ON THE BASIS OF A COMPLETE FACTOR EXPERIMENT","authors":"Olga Prishchenko, Tetyana Chernogor","doi":"10.20998/2220-4784.2023.01.04","DOIUrl":"https://doi.org/10.20998/2220-4784.2023.01.04","url":null,"abstract":"The article deals with the construction of a mathematical model of the process, which is created based on the results of a full factorial experiment. Often, only the results of experimental studies carried out at such objects are the information, based on the processing of which, according to the obtained mathematical model of the object, a high-quality control algorithm for this object can be implemented. At the same time, the construction of a mathematical model that describes the technological process with the required accuracy often involves a huge amount of work at the stage of experiments. The task of planning experiments is to establish the minimum required number of them and the conditions for their implementation, to choose methods for mathematical processing of the results, and to make decisions. Designing experiments significantly reduces the number of experiments required to obtain a process model. An active experiment involves a purposeful choice of factor values. Compared to a passive experiment, such an experiment turns out to be more efficient and economical, since the amount of experimental work is significantly reduced. In this article, in relation to chemical technology, the issues of organizing an experiment, mathematical processing of experimental data and mathematical planning of an experiment in the search for optimal conditions for conducting a technological process are described. Mathematical modeling and optimization of chemical technology objects is of great importance for obtaining higher professional education for students of the Educational and Scientific Institute of Chemical Technology and Engineering.","PeriodicalId":9496,"journal":{"name":"Bulletin of the National Technical University \"KhPI\". Series: Innovation researches in students’ scientific work","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86939646","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}
Pub Date : 2023-08-30DOI: 10.20998/2220-4784.2023.01.05
Nadezhda Cheremska
When processing data on random functions, they are most often limited to constructing an empirical correlation function. In this regard, the problem arises of constructing a random function (a quasi-deterministic signal) determined by a finite set of random variables and having a given correlation function. Moreover, a random function can often be considered Gaussian, since in many cases a random signal is obtained at the output of the system, which is fairly well approximated by a Gaussian. For stationary random processes and for random fields, this problem has been considered. For random sequences and discrete random fields, as well as for non-stationary random signals, the problem remained open. The article considers the problem of restoring a random sequence from known mathematical expectation and correlation function. Such a model random sequence is constructed, in which the mathematical expectation and correlation function coincide with the given ones. The mathematical expectation and the correlation function are the simplest probabilistic numerical characteristics, but they do not uniquely determine the corresponding set of probability distribution densities that satisfy the conditions of normalization and consistency, provided that for each fixed integer value of the parameter, the random sequence is a continuous random variable. The article considers the restoration of a quasi-deterministic signal in stationary and non-stationary cases. For the stationary case, three examples are given for constructing a quasi-deterministic discrete signal EMBED Equation.DSMT4 , provided that the spectral density has three different forms. For the non-stationary case, the corresponding quasi-deterministic signal was obtained for various cases of the spectrum. The use of a random function model determined by a finite number of parameters makes it possible to significantly simplify the analysis of applied problems, the solution of which is associated with differential equations with random coefficients, which are such quasi-deterministic signals. In this case, there is no need to use a complex apparatus of stochastic differential equations, since the solution of such an equation simply depends on random variables as on parameters.
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