Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta最新文献

{"title":"Constructing tests methods for the interactive computer networks at the structural-logical level","authors":"Maryna Miroshnyk, Olexandr Shkil, Dariia Rakhlis, Miroshnyk Miroshnyk, Dmytro Loboyhenko","doi":"10.20998/2411-0558.2023.01.07","DOIUrl":"https://doi.org/10.20998/2411-0558.2023.01.07","url":null,"abstract":"Synthesizing test sequences methods for interactive computer networks using cyclic, distinguishing and characteristic symbols for the FSM model of a network cell have been developed. A new method for state diagram modification of a cell, which doesn't have a distinguishing sequence and provides for the input of an additional input symbol and usage of state codes, which generates a Hamilton cycle in the sequence of transitions has been developed and substantiated. Methods and procedures for the synthesis of one-dimensional and two-dimensional networks with distributed configuration control have been developed. Figs.: 1. Refs.: 10 titles.","PeriodicalId":32537,"journal":{"name":"Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135759316","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":"Decision making methodology based on generalized confidence and interpretability of artificial intelligence recommendation","authors":"Tetiana Biloborodova, Inna Skarga-Bandurova","doi":"10.20998/2411-0558.2023.01.10","DOIUrl":"https://doi.org/10.20998/2411-0558.2023.01.10","url":null,"abstract":"The article examines the transition in medical diagnostics from traditional clinician-dependent methodologies to evidence-based approaches using artificial intelligence (AI). The primary objective of the research is to develop a decision-making methodology based on the integration of human decisions and AI-based recommendations, as well as the interpretability of AI results for humans. The proposed methodology involves the formation of decisions based on human intelligence (HI) and AI, the assessment of the utility of recommendations, and generation of a joint decision based on cumulative probability. The practical application of the methodology was demonstrated through an experiment involving the classification of non-medical images. The research findings underscore the importance of transparency, interpretability, and trust in AI results for the successful utilization of AI in healthcare. Figs.: 1. Refs.: 16 titles.","PeriodicalId":32537,"journal":{"name":"Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135758480","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":"Using quadratic Volterra model of the oculo-motor system in diagnostic research of psychophysiological state of human","authors":"Vitaliy Pavlenko, Tetiana Shamanina, Vladyslav Chori","doi":"10.20998/2411-0558.2023.01.09","DOIUrl":"https://doi.org/10.20998/2411-0558.2023.01.09","url":null,"abstract":"It contains the results of the study of the effectiveness of the application of approximation Volterra models of the first and second order of the oculo-motor system in diagnostic studies of the psychophysiological state of a person based on eye-tracking data. Visual stimuli are used as test signals, which are displayed on the monitor screen at different distances from the initial position, which formally corresponds to the action of step signals with different amplitudes at the OMS input. Experimental studies of the \"input-output\" of the OMS were carried out using the Tobii Pro TX300 eyetracker, and the first-order transient functions and the second-order diagonal intersections of the second-order transient functions were determined based on the eye-tracking data. The resulting transient functions are used to form the spaces of diagnostic features. The diagnostic value of all possible combinations of features in pairs according to the indicator of the probability of correct recognition (PCR) was studied. The research results were obtained using Bayesian classifier training in different spaces of the proposed features. A study of the robustness of features according to the PCR indicator was carried out, the combinations of features with the maximum and most stable PCR indicator were selected. Figs.: 13. Tabl.: 5. Refs.: 28 titles.","PeriodicalId":32537,"journal":{"name":"Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135759317","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":"Simulation of oscillation of a dam-plate of variable thickness","authors":"Bakhtiyar Khudayarov, A.A. Tukhtaboev, O.R. Kucharov, Fozilzhon Turaev, Nurilla Yuldashev","doi":"10.20998/2411-0558.2023.01.02","DOIUrl":"https://doi.org/10.20998/2411-0558.2023.01.02","url":null,"abstract":"The hereditary theory of viscoelasticity has provided ample opportunities for describing the dynamic processes of deformation of various materials. However, the implementation of these possibilities in many cases is difficult due to the lack of an adequate mathematical apparatus, especially in the study of dynamic processes in viscoelastic systems. There are fundamental reasons to believe that the apparatus of integral equations is very promising in this sense. The use of modern computer technology capabilities makes it possible to create effective mathematical modeling technologies for problems of great complexity, which include problems of dynamics and dynamic stability of viscoelastic elements of thin-walled structures with variable stiffness. Mathematical models of dynamic problems are constructed, efficient computational algorithms are developed, and forced vibrations of a dam-plate with variable stiffness are studied. The results of studies of problems on vibrations of a dam-plate of variable thickness are given, taking into account the viscoelastic properties of the material, the hydrodynamic pressure of water, soil and seismic load. Figs.:3, Refs.: 22 titles.","PeriodicalId":32537,"journal":{"name":"Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135759318","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":"Methods of composition of different approximations in the simulation of dynamic processes","authors":"Olga Dmytriyeva","doi":"10.20998/2411-0558.2023.01.01","DOIUrl":"https://doi.org/10.20998/2411-0558.2023.01.01","url":null,"abstract":"The paper investigates methods of composing difference approximations for forming single- and multi-step parallel difference schemes of a given order, oriented to the numerical solution of the Cauchy problem for both ordinary differential equations and evolutionary partial differential equations. The proposed discrete approximations allow us to vary the order of the error, departing from the maximum possible on a fixed set of nodes, but ensuring absolute or A-α stability of numerical solutions. The study of the properties of the proposed transition matrices connecting the reference and design points allows us to determine the nature of the stability of the generated difference schemes according to the initial data and the right-hand sides. Automatic generation of stable difference schemes allows taking into account the topology of the processor field, and thus, using the available computing resource with maximum efficiency. Figs.: 10. Refs.: 18 titles.","PeriodicalId":32537,"journal":{"name":"Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135759321","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":"Applied software for modeling parameters of sensors based on quartz piezoelectric elements","authors":"Volodymyr Savchenko, Oksana Mnushka, Serhii Leonov","doi":"10.20998/2411-0558.2023.01.05","DOIUrl":"https://doi.org/10.20998/2411-0558.2023.01.05","url":null,"abstract":"An applied scientific and technical problem of constructing software for studying the parameters of quartz piezoelectric elements with an interelectrode gap has been solved. An analytical review of the issues arising during parameter modeling, the main approaches to constructing scientific software using universal mathematical packages and narrowly specialized programs, have been conducted. The structure of software components has been developed using object-oriented design and programming principles. A subroutine library for calculating the physical parameters of quartz elements in the Python programming language has been developed. The software can be expanded by using additional refined mathematical models. Figs.: 3. Bibl.: 14 titles.","PeriodicalId":32537,"journal":{"name":"Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135759323","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":"Application of the method of analysis of hierarchies for the selection of the optimal model of consolidation of IT resources of the SFD of Ukraine","authors":"Serhii Ilin, Ievgenii Kholod, Andrij Maznychko, Lubov Horodnycha","doi":"10.20998/2411-0558.2023.01.08","DOIUrl":"https://doi.org/10.20998/2411-0558.2023.01.08","url":null,"abstract":"The selection of the optimal technology for the consolidation of information resources from the information support of the State Register of Documents of the Documentation Insurance Fund of Ukraine was carried out among technologies IaaS, PaaS, SaaS, DaaS, web applications, etc.
 This multi-criteria problem with a large number of factors of different dimensions was solved using the method of analysis of hierarchies. Figs.:1. Tabl.: 2, Refs.: 15 titles.","PeriodicalId":32537,"journal":{"name":"Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135758884","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":"THE RESONANT AMPLIFIER OF THE ACTIVE ELECTRICAL POWER WITH ADDITIONAL VOLTAGE SOURCE. SUGGESTIONS, ANALYSIS, NUMERICAL ESTIMATES","authors":"Yuriy Batygin, Tetyana Gavrilova, Svitlana Shinderuk, Evgeniy Chaplygin","doi":"10.20998/2413-4295.2023.03.01","DOIUrl":"https://doi.org/10.20998/2413-4295.2023.03.01","url":null,"abstract":"The problem of increasing energy saving in industry leads to the need to develop new technical devices. The paper presents and analyzes the circuit of the resonance amplifier of active electric power, evaluates the characteristics of electromagnetic processes for the fundamental substantiation of the operation of real devices based on this circuit. Mathematical analysis of electromagnetic processes taking place was carried out using strict methods of the theory of electric circuits. The advantages of this scheme in comparison with similar previous proposals are shown. The device includes four active-reactive circuits that are inductively connected. The first of them is an input circuit with a harmonic signal source that needs to be amplified. The second circuit generates enhanced reactive power in the \"voltage resonance\" mode. The third circuit with an additional voltage source provides reactive power output from the second circuit in the \"resonance of currents\" mode without adverse effects on amplification processes. The fourth circuit, inductively connected to the third circuit, contains an output load - a resistor that simulates the allocation of active power. On the basis of the analysis and numerical evaluation of the characteristics of the processes taking place in the proposed scheme of the resonance amplifier of active electric power, its basic efficiency is shown. The calculations of the experimental model made it possible to formulate recommendations for the selection of circuit elements of a working resonant amplifier with a high efficiency for low-impedance output loads. The considered real parameters of the device make it possible to minimize the dissipation of the energy of converted electrical signals and to increase the amplification factor of the electric power of harmonic currents and voltage by choosing the element base. The obtained results can be considered as practical recommendations for the creation of real devices for amplifying active electric power for use in various industries.","PeriodicalId":32537,"journal":{"name":"Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135547850","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":"STUDY OF FIRE LOCATION TIME IN HIGH-STORY BUILDINGS IN CITIES OF UKRAINE","authors":"Oleksandr Polivanov","doi":"10.20998/2413-4295.2023.03.07","DOIUrl":"https://doi.org/10.20998/2413-4295.2023.03.07","url":null,"abstract":"The effectiveness of extinguishing a fire depends on the speed of arrival of fire and rescue units at the scene and the time it will take to deliver the \"first\" barrel (extinguishing agent) to the location. The rapid supply of fire extinguishing agent gives a chance to localize and then eliminate the fire in the initial phase, although the result depends significantly on the action in the \"first minutes of the fire\". The urban settlements into appropriate groups based on population and territory using methods of cluster analysis were divided. One settlement was selected from each group of cities, and then data on fires for the period of 2020 was processed. The statistical data obtained from the operational coordination centers of the State Emergency Service of Ukraine in the cities of Kyiv, Kharkiv, Poltava, and Berdyansk, which characterize the process of extinguishing fires, namely the time of arrival of fire and rescue units at the scene of the fire, the time of localization of the fire and the area of the fire, were analyzed. Statistical data were selected only for high-rise buildings. The interrelationship of the following parameters was established: burning area, building floor, time of fire localization. The obtained static data indicate that the area of fire and the time of localization increases on average from 3.5 to 6 times. The result of the data analysis provides a clear understanding of the need to improve the available means and methods (tactics) of extinguishing fires in multi-story buildings. We proposed to use the Typhoon-10 impulse fire extinguisher, which has been converted into a pneumatic gun for the discrete delivery of fire extinguishing substances placed in a special container, as the basis of firefighting tactics in multi-story buildings. Discrete delivery of fire-extinguishing substances in a container allows to reduce the time of localization of fires in multi-story buildings due to the efficiency of deployment of the installation and accurate delivery through the window opening directly to the center of the fire.","PeriodicalId":32537,"journal":{"name":"Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta","volume":"15 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135547847","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":"EFFECTS OF AGARICUS BISPORUS AND FLAMMULINA VELUTIPES MUSHROOMS ON QUALITY OF CHICKEN BATTERS","authors":"Tetiana Fotina, Anqi Xiong, Olena Koshel, Sergiy Sabadash, Roman Yankovskiy","doi":"10.20998/2413-4295.2023.03.08","DOIUrl":"https://doi.org/10.20998/2413-4295.2023.03.08","url":null,"abstract":"It was noted the modern tendencies of the cultivated mushrooms using as a fat substitutes in the technology of low-fat meat products. It was states that variety of low-calorie, low-fat foods have come to the fore, and quickly become the mainstream of the future development of food. The mushrooms are worldwide cultivated and rich in protein, vitamins, dietary fiber, amino acids, polysaccharides, minerals, but low in fat and calories In order to develop low-fat meat products, the compound of Agaricus bisporus and Flammulina velutipes mushrooms were used as fat substitute to replace the pork-back fat in chicken batters. The amino acids content of these mushrooms allows receiving a nice flavor and can be use in the minced meat. It was use a chicken meat as a well-liked raw material for emulsified products. For preparation of meat batters was used chicken breast, salt and sodium tripolyphosphate. The chicken meatballs were prepared with the cultivated mushrooms as fat-substitutes.The mushrooms were compounded to replace fat in chicken batters, and the effect of compounding these mushrooms on the quality of chicken mince was investigated to find the optimal ratio of fat replacement. The cooking loss, water holding capacity, color, texture and rheological properties of chicken batters were studied. The results showed that the compound of Agaricus bisporus and Flammulina velutipes improved the texture, increased the water holding capacity, redness and yellowness, and reduced the cooking loss and brightness of chicken batters. When the ratio of Agaricus bisporus and Flammulina velutipes was 2:1 to replace 30% pork-back fat, chicken batters showed the best quality. In conclusion, the combination of Agaricus bisporus and Flammulina velutipes is a promising fat substitute in the development of low-fat meat products.","PeriodicalId":32537,"journal":{"name":"Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta","volume":"176 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135547848","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}