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Digital twins: stages of concept development, areas of use, prospects 数字孪生:概念发展阶段，使用领域，前景
System research and information technologies Pub Date : 2023-06-30 DOI: 10.20535/srit.2308-8893.2023.2.01
N. Pankratova, Kostiantyn Grishyn, Viesta Barilko
{"title":"Digital twins: stages of concept development, areas of use, prospects","authors":"N. Pankratova, Kostiantyn Grishyn, Viesta Barilko","doi":"10.20535/srit.2308-8893.2023.2.01","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2023.2.01","url":null,"abstract":"The results of a review of the digital twin concept development, the areas of their use, and the prospects are highlighted. The history of the emergence and development of the digital twin concept, its definition, and its classification are given. The relevance of the technology under consideration is reflected. The purpose of this review is to provide the most complete, up-to-date information on the current state of the digital twin technology, its application in various fields of human activity, and further prospects for the development of the industry. An extensive bibliography on the topic is provided, which may be helpful for researchers and representatives of various industries.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131143532","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}
引用次数: 0
A genetic algorithm improvement by tour constraint violation penalty discount for maritime cargo delivery 基于行程约束违章罚款折扣的海运货物交付遗传算法改进
System research and information technologies Pub Date : 2023-06-30 DOI: 10.20535/srit.2308-8893.2023.2.08
V. Romanuke, Andriy Romanov, M. Malaksiano
{"title":"A genetic algorithm improvement by tour constraint violation penalty discount for maritime cargo delivery","authors":"V. Romanuke, Andriy Romanov, M. Malaksiano","doi":"10.20535/srit.2308-8893.2023.2.08","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2023.2.08","url":null,"abstract":"The problem of minimizing the cost of maritime cargo delivery is considered. The cost is equivalent to the sum of the tour lengths of feeders used for the delivery. The problem is formulated as a multiple traveling salesman problem. In order to find its solution as the shortest route of the tours of feeders, a genetic algorithm is used where we present two inequalities constraining the tour length of every feeder to lie between the shortest and longest lengths. Apart from the constant tour constraint violation penalty in the genetic algorithm, we suggest a changeable penalty as an exponential function of the algorithm iteration, where we maintain the possibility of the penalty rate to be either increasing or decreasing, whose steepness is controlled by a positive parameter. Our tests show that the changeable penalty algorithm may return shorter routes, although the constant penalty algorithms cannot be neglected. As the longest possible tour of the feeder is shortened, the changeable penalty becomes more useful owing to a penalty discount required either at the beginning or at the end of the algorithm run to improve the selectivity of the best feeder tours. In optimizing maritime cargo delivery, we propose to run the genetic algorithm by the low and constant penalties along with the increasing and decreasing penalties. The solution is the minimal value of the four route lengths. In addition, we recommend that four algorithm versions be initialized by four different pseudorandom number generator states. The expected gain is a few percent, by which the route length is shortened, but it substantially reduces expenses for maritime cargo delivery.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127255645","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}
引用次数: 0
The algorithm for predicting the cryptocurrency rate taking into account the influence of posts of a group of famous people in social networks 预测加密货币汇率的算法，考虑了一群名人在社交网络上的帖子的影响力
System research and information technologies Pub Date : 2023-06-30 DOI: 10.20535/srit.2308-8893.2023.2.02
P. Bidyuk, Olena Gavrilenko, Mykhailo Myagkyi
{"title":"The algorithm for predicting the cryptocurrency rate taking into account the influence of posts of a group of famous people in social networks","authors":"P. Bidyuk, Olena Gavrilenko, Mykhailo Myagkyi","doi":"10.20535/srit.2308-8893.2023.2.02","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2023.2.02","url":null,"abstract":"This article presents an algorithm for predicting the rate of a selected cryptocurrency, taking into account the posts of a group of famous people in a particular social network. The celebrities chosen as experts, i.e., famous personalities whose posts on social networks were studied, are either familiar with the financial industry, particularly the cryptocurrency market, or some cryptocurrency. The dataset used was the actual rates of the cryptocurrency in question for the selected period and the statistics of expert posts in the selected social network. The study used methods such as the full probability formula and the Bayesian formula. It was found that posts by famous people on social media differently affected cryptocurrency rates. The “main” expert was identified, and his posts were used to forecast the selected cryptocurrency’s rate.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127924532","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}
引用次数: 0
Estimation of the parameters of generalized linear models in the analysis of actuarial risks 精算风险分析中广义线性模型参数的估计
System research and information technologies Pub Date : 2023-06-30 DOI: 10.20535/srit.2308-8893.2023.2.10
Roman Panibratov, P. Bidyuk
{"title":"Estimation of the parameters of generalized linear models in the analysis of actuarial risks","authors":"Roman Panibratov, P. Bidyuk","doi":"10.20535/srit.2308-8893.2023.2.10","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2023.2.10","url":null,"abstract":"Methods of estimating the parameters of generalized linear models for the case of paying insurance premiums to clients are considered. The iterative-recursive weighted least squares method, the Adam optimization algorithm, and the Monte Carlo method for Markov chains were implemented. Insurance indicators and the target variable were randomly generated due to the problem of public access to insurance data. For the latter, the normal and exponential law of distribution and the Pareto distribution with the corresponding link functions were used. Based on the quality metrics of model learning, conclusions were made regarding their construction quality.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131781827","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}
引用次数: 0
Interval type-2 generalizing fuzzy model for monitoring the states of complex systems using expert knowledge 利用专家知识监测复杂系统状态的区间2型广义模糊模型
System research and information technologies Pub Date : 2023-06-30 DOI: 10.20535/srit.2308-8893.2023.2.05
N. Kondratenko, Olga Snihur, R. Kondratenko
{"title":"Interval type-2 generalizing fuzzy model for monitoring the states of complex systems using expert knowledge","authors":"N. Kondratenko, Olga Snihur, R. Kondratenko","doi":"10.20535/srit.2308-8893.2023.2.05","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2023.2.05","url":null,"abstract":"A type-2 interval generalizing fuzzy model is proposed for monitoring complex systems’ states. A set-theoretic approach is proposed to generalize the results of type-2 fuzzy models with interval membership functions. The study of the correspondence of expert assessments to the output value of the generalizing fuzzy model over the observation interval is presented. Examples of the use of generalizing fuzzy model type-2 in the task of monitoring the conditions of an artesian well are given. It is shown that in order to improve the quality of decisions made, the expert needs to pay attention to the value of the interval output of the generalizing type-2 fuzzy model. Recommendations are presented to experts to improve decision-making regarding the estimation of the output interval of the generalizing model.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129446994","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}
引用次数: 0
Information technology for creating intelligent computer programs for training in algorithmic tasks. Part 2: Research and implementation 为训练算法任务而创建智能计算机程序的信息技术。第2部分:研究和实现
System research and information technologies Pub Date : 2023-06-30 DOI: 10.20535/srit.2308-8893.2023.2.03
A. Kulik, A. Chukhray, O. Havrylenko
{"title":"Information technology for creating intelligent computer programs for training in algorithmic tasks. Part 2: Research and implementation","authors":"A. Kulik, A. Chukhray, O. Havrylenko","doi":"10.20535/srit.2308-8893.2023.2.03","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2023.2.03","url":null,"abstract":"Information technologies, particularly artificial intelligence methods, involve more and more deeply into all spheres of human activity: science, technology, art, and education. Ukraine also has sufficient potential and needs to develop educational support, which is the subject of this paper. The work aims to demonstrate the components of information technology for the creation of Intelligent Tutoring Systems (ITS), which are involved in studying various engineering disciplines. The work includes methods of system analysis, mathematical and simulation modeling, technical diagnostics, and artificial intelligence. The proposed models and methods are implemented in ITS prototypes for teaching mathematics, programming, and the automatic control theory. The Intelligent Tutoring Systems were implemented in the educational process of KhAI University and other institutions in Ukraine, Great Britain, Austria, and China. Experimental studies have shown increased student learning success rates using ITS compared to traditional methods. Improved and adapted for computer training methods of technical diagnostics, Bayesian networks, and developed models of algorithmic tasks, the learning process and the learner are valuable from a scientific point of view. In a practical sense, the obtained results can be used to create new specialized ITSs and build an expandable common learning platform integrating the basic disciplines of a specific educational field.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121522349","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}
引用次数: 0
Guaranteed root-mean-square estimates of the forecast of matrix observations under conditions of statistical uncertainty 在统计不确定的条件下对矩阵观测预测的保证均方根估计
System research and information technologies Pub Date : 2023-06-30 DOI: 10.20535/srit.2308-8893.2023.2.07
O. Nakonechnyi, Grygoriy Kudin, P. Zinko, T. Zinko
{"title":"Guaranteed root-mean-square estimates of the forecast of matrix observations under conditions of statistical uncertainty","authors":"O. Nakonechnyi, Grygoriy Kudin, P. Zinko, T. Zinko","doi":"10.20535/srit.2308-8893.2023.2.07","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2023.2.07","url":null,"abstract":"We investigate the problem of linear estimation of unknown mathematical expectations based on observations of realizations of random matrix sequences. Constructive mathematical methods have been developed for finding linear guaranteed RMS estimates of unknown non-stationary parameters of average values based on observations of realizations of random matrix sequences. It is shown that such guaranteed estimates are obtained either as solutions to boundary value problems for systems of linear differential equations or as solutions to the corresponding Cauchy problems. We establish the form and look for errors for the guaranteed RMS quasi-minimax estimates of the special forecast vector and parameters of unknown average values. In the presence of small perturbations of known matrices in the model of matrix observations, quasi-minimax RMS estimates are found, and their guaranteed RMS errors are obtained in the first approximation of the small parameter method. Two test examples for calculating the guaranteed root mean square estimates and their errors are given.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121934040","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}
引用次数: 0
Application of Bezier curves for description of structure shape in optimization of adhesive joints 贝塞尔曲线描述结构形状在粘接优化中的应用
System research and information technologies Pub Date : 2023-06-30 DOI: 10.20535/srit.2308-8893.2023.2.09
S. Kurennov, K. Barakhov, Hanna Barakhova
{"title":"Application of Bezier curves for description of structure shape in optimization of adhesive joints","authors":"S. Kurennov, K. Barakhov, Hanna Barakhova","doi":"10.20535/srit.2308-8893.2023.2.09","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2023.2.09","url":null,"abstract":"The problem of topological optimization of a symmetrical double-shear adhesive joint has been solved. The suggested mathematical model of a joint with variable thickness generalizes the classic Holland–Reissner model. The shape of the doubler is described by means of the Bezier curve. Seeking parameters in the optimization problem are coordinates of reference points of the Bezier curve. Both joint length and doubler cross-section area can be considered an objective function. The restriction is applied on stress in adhesive film and doubler. The direct problem of finding the joint stress state at given geometric parameters was solved using the finite difference method. The genetic algorithm was used to solve the optimization problem. In order to improve the convergence of the genetic algorithm, the island model of evolution is suggested, which ensures quick evolution selection and stability of obtained results. The model problem is solved.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122611514","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}
引用次数: 0
Assessment of the economical dimension of sustainable development of the ukraine’s regions based on the brightness of night lights 基于夜间灯光亮度的乌克兰地区可持续发展的经济维度评估
System research and information technologies Pub Date : 2023-06-30 DOI: 10.20535/srit.2308-8893.2023.2.04
M. Zgurovsky, K. Yefremov, Sergii Gapon, I. Pyshnograiev
{"title":"Assessment of the economical dimension of sustainable development of the ukraine’s regions based on the brightness of night lights","authors":"M. Zgurovsky, K. Yefremov, Sergii Gapon, I. Pyshnograiev","doi":"10.20535/srit.2308-8893.2023.2.04","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2023.2.04","url":null,"abstract":"When assessing the level of development of territories, the problem of finding objective qualitative data that will characterize it arises. One of the possible sources of such data is the remote sensing of the Earth (RSE). The article is devoted to the analysis of the possibility of using the product of RSE – the map of night lights, for modeling the economical dimension of the sustainable development of the regions of Ukraine. Using the regression and correlation analysis and neural networks, appropriate models for assessing the level of economic development of the Kherson region, Donetsk region, and the AR of Crimea were obtained. The study was carried out by the team of the World Data Center for Geoinformatics and Sustainable Development of the Igor Sikorsky Kyiv Polytechnic Institute. It was part of research on the analysis of the behavior of complex socio-economic systems and processes of sustainable development in the context of the quality and safety of people’s lives.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126964885","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}
引用次数: 0
Approach to positional logic algebra 位置逻辑代数的方法
System research and information technologies Pub Date : 2023-03-30 DOI: 10.20535/srit.2308-8893.2023.1.11
Mykola Kovalov
{"title":"Approach to positional logic algebra","authors":"Mykola Kovalov","doi":"10.20535/srit.2308-8893.2023.1.11","DOIUrl":"https://doi.org/10.20535/srit.2308-8893.2023.1.11","url":null,"abstract":"The method of Boolean function representation in terms of positional logic algebra in compact operator form is offered. Compared with the known method, it uses position operators with a complexity of no more than two and only one type of equivalent transformations. The method is less labor intensive. It allows parallelizing logic calculations. The corresponding way of Boolean function implementation is developed. It competes with some known ways in terms of hardware complexity, resource intensity, and speed when implemented on an FPGA basis. Possibilities open up for creating effective automating means of representing Boolean functions from a large number of variables, synthesizing the corresponding LCs, and improving modern element bases.","PeriodicalId":330635,"journal":{"name":"System research and information technologies","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114511464","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}
引用次数: 0
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