Bulletin of National Technical University "KhPI". Series: System Analysis, Control and Information Technologies最新文献

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APPLICATION OF BAYESIAN REGULARIZATION FOR IMPROVING THE QUALITY OF ELECTRICAL ENERGY IN THE ELECTRICAL SUPPLY SYSTEM 应用贝叶斯正则化提高供电系统的电能质量
Kateryna Yagup, Valery Yagup
{"title":"APPLICATION OF BAYESIAN REGULARIZATION FOR IMPROVING THE QUALITY OF ELECTRICAL ENERGY IN THE ELECTRICAL SUPPLY SYSTEM","authors":"Kateryna Yagup, Valery Yagup","doi":"10.20998/2079-0023.2023.02.03","DOIUrl":"https://doi.org/10.20998/2079-0023.2023.02.03","url":null,"abstract":"The possibility of using neural networks in the field of the energy coefficients correction of a power supply system with uneven load in phases is being studied. This need is justified by the fact, that the calculation of the necessary parameters of the symmetry-compensating device was previously based on the Nelder – Mead search optimization method. Search optimization performing is computationally expensive, takes long computation times, and may calculate anomalous values. The article develops the idea of using technology for predicting the parameters of a symmetry-compensating device, based on neural network modeling using Bayesian regularization. For a given set of initial data, the best selected configuration turned out to be a neural network of two layers, implemented in the MATLAB package using the machine learning tool Neural Network Toolbox. The network input parameters are a set of tuples, consisting of load values in each of the three phases of the power supply system, which are resistive-inductive in nature. There are six input quantities in total (load resistance and inductance values in each of the three phases) and all their values are different, which causes current asymmetry in the network and reactive power. The target matrix is formed from tuples, consisting of three values, which are the parameters of the symmetrical compensating device, calculated by the optimization method, in such a way as to compensate reactive power and to balance currents in the network. The number of data tuples, required to train a neural network was determined empirically. During the experiments, the optimal number of neurons in the neural network was also revealed. The use of the generated neural network to calculate the parameters of the symmetry-compensating device determined approximate solutions is comparable in accuracy to the values, found by optimization methods. With the help of the generated neural system, adequate quasi-solutions for calculating the parameters of the symmetry-compensating device were determined, which, in case of calculation, using the optimization method, led to anomalous values, that didn’t optimize the energy coefficients of the power supply system to the required extent. Also, such neuropredictions protect the system from receiving excessive high parameters of symmetry compensating device, which can be obtained with an optimization approach.","PeriodicalId":391969,"journal":{"name":"Bulletin of National Technical University \"KhPI\". Series: System Analysis, Control and Information Technologies","volume":" 109","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138962052","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
OPTIMIZATION OF THE AUCTION DURATION IN THE PRESENSE OF TIME-DEPENDANT COSTS 在成本随时间变化的情况下优化拍卖期限
Oleg Melnikov
{"title":"OPTIMIZATION OF THE AUCTION DURATION IN THE PRESENSE OF TIME-DEPENDANT COSTS","authors":"Oleg Melnikov","doi":"10.20998/2079-0023.2023.02.05","DOIUrl":"https://doi.org/10.20998/2079-0023.2023.02.05","url":null,"abstract":"This paper examines the influence of the duration of auctions or tenders on the expected gain of their organizer. Extending the duration of bidding affects auction results in two ways. On the one hand, it allows attracting a larger number of participants to the auction, and the competition between them increases the chances of the auctioneer to get a better price. On the other hand, delaying bids delays the receipt of money (for auctions) or required goods or services (for tenders), and time has value in itself. The influence of these two factors, which act in opposite directions, suggests the existence of an optimal duration of the bidding process. The paper develops a mathematical model of bidding, which formalizes these considerations and provides an algorithm to determine their optimal duration. The arrival of bidders willing to participate in the auction is modeled as a Poisson process. Each participant is characterized by his own assessment of the value of the object put up for auction. These estimates are assumed to be independent identically distributed random variables drawn from some parametric distribution. Under these assumptions, Myerson's revenue equivalence theorem makes it possible to predict the expected results of the auction as a function of the number of bidders, regardless of the auction rules. On this basis, it is possible to compare the benefits and costs associated with changing the duration of time for accepting applications for participation in bidding, which makes it possible to determine its optimal value. The obtained optimality conditions have a meaningful and intuitive economic interpretation. For practical applications, the use of Monte Carlo methods based on the empirical distribution of bid and ask prices is proposed. The practical implementation of the proposed algorithm can improve the economic performance of the auctioneer, which is especially relevant for the public sector of the economy.","PeriodicalId":391969,"journal":{"name":"Bulletin of National Technical University \"KhPI\". Series: System Analysis, Control and Information Technologies","volume":" August","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138960524","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
SIMULATION OF THE PROPAGATION OF A PLANE ELECTROMAGNETIC WAVE IN AN INHOMOGENEOUS NONABSORBING MEDIUM 模拟平面电磁波在非均质非吸收介质中的传播
O. Mazmanishvili, Ganna Sydorenko
{"title":"SIMULATION OF THE PROPAGATION OF A PLANE ELECTROMAGNETIC WAVE IN AN INHOMOGENEOUS NONABSORBING MEDIUM","authors":"O. Mazmanishvili, Ganna Sydorenko","doi":"10.20998/2079-0023.2023.02.08","DOIUrl":"https://doi.org/10.20998/2079-0023.2023.02.08","url":null,"abstract":"Analytical solutions of the Ishimaru's parabolic equation for the coherence function of the electromagnetic field, which describe the temporal properties of the pulse at the output of a heterogeneous non-dissipative medium, are considered. A generalization of the approach used in the Ishimaru model to describe the time evolution of a monochromatic electromagnetic pulse enveloping in homogeneous non-dissipative media is obtained for the case of non-homogeneous non-dissipative media. Thus, an attempt was made to take into account the influence of the heterogeneity of the medium on the shape of the resulting pulse. When solving the given problem, the difficulties associated with the calculation of the continuous integral arising in the space of diffusion trajectories were overcome. This made it possible to obtain an explicit expression for the Green's function of the task and to build a computational algorithm based on which a number of numerous experiments were conducted. The analysis of the work was carried out based on the apparatus of quadratic integral functionals based on the solutions of differential stochastic equations. In the paper, the invariant temporal properties of the envelope of monochromatic electromagnetic pulses recorded after passing through a flat layer of a scattering heterogeneous medium, i.e., properties that remain unchanged when the parameters of the medium vary, in particular, the distribution of the concentration of scattering centers. The dynamics of the formation of time plumes of the scattered wave, in which the tail part is located in the peripheral time area, were analyzed. When propagating at the speed of transformation of the wave front, it reflects the appearance of the layers of the scattering region and its longitudinal shape. It is noted that the development of the proposed approximation approach to the processes affecting the time delay of electromagnetic pulses can be the accounting for the attenuation of radiation during its propagation in an inhomogeneous absorbing medium.","PeriodicalId":391969,"journal":{"name":"Bulletin of National Technical University \"KhPI\". Series: System Analysis, Control and Information Technologies","volume":" 72","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138961064","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 METHOD FOR EVALUATING EXPLANATIONS IN AN ARTIFICIAL INTELLIGENCE SYSTEM USING POSSIBILITY THEORY 一种利用可能性理论评估人工智能系统中解释的方法
S. Chalyi, V. Leshchynskyi
{"title":"A METHOD FOR EVALUATING EXPLANATIONS IN AN ARTIFICIAL INTELLIGENCE SYSTEM USING POSSIBILITY THEORY","authors":"S. Chalyi, V. Leshchynskyi","doi":"10.20998/2079-0023.2023.02.14","DOIUrl":"https://doi.org/10.20998/2079-0023.2023.02.14","url":null,"abstract":"The subject of the research is the process of generating explanations for the decision of an artificial intelligence system. Explanations are used to help the user understand the process of reaching the result and to be able to use an intelligent information system more effectively to make practical decisions for him or her. The purpose of this paper is to develop a method for evaluating explanations taking into account differences in input data and the corresponding decision of an artificial intelligence system. The solution of this problem makes it possible to evaluate the relevance of the explanation for the internal decision-making mechanism in an intelligent information system, regardless of the user's level of knowledge about the peculiarities of making and using such a decision. To achieve this goal, the following tasks are solved: structuring the evaluation of explanations depending on their level of detail, taking into account their compliance with the decision-making process in an intelligent system and the level of perception of the user of such a system; developing a method for evaluating explanations based on their compliance with the decision-making process in an intelligent system. Conclusions. The article structures the evaluation of explanations according to their level of detail. The levels of associative dependencies, precedents, causal dependencies and interactive dependencies are identified, which determine different levels of detail of explanations. It is shown that the associative and causal levels of detail of explanations can be assessed using numerical, probabilistic, or possibilistic indicators. The precedent and interactive levels require a subjective assessment based on a survey of users of the artificial intelligence system. The article develops a method for the possible assessment of the relevance of explanations for the decision-making process in an intelligent system, taking into account the dependencies between the input data and the decision of the intelligent system. The method includes the stages of assessing the sensitivity, correctness and complexity of the explanation based on a comparison of the values and quantity of the input data used in the explanation. The method makes it possible to comprehensively evaluate the explanation in terms of resistance to insignificant changes in the input data, relevance of the explanation to the result obtained, and complexity of the explanation calculation. In terms of practical application, the method makes it possible to minimize the number of input variables for the explanation while satisfying the sensitivity constraint of the explanation, which creates conditions for more efficient formation of the interpretation based on the use of a subset of key input variables that have a significant impact on the decision obtained by the intelligent system.","PeriodicalId":391969,"journal":{"name":"Bulletin of National Technical University \"KhPI\". Series: System Analysis, Control and Information Technologies","volume":" 1287","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138960200","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
EXAMINING SOFTWARE QUALITY CONCEPT: BUSINESS ANALYSIS PERSPECTIVE 研究软件质量概念:业务分析视角
Denys Gobov, Oleksandra Zuieva
{"title":"EXAMINING SOFTWARE QUALITY CONCEPT: BUSINESS ANALYSIS PERSPECTIVE","authors":"Denys Gobov, Oleksandra Zuieva","doi":"10.20998/2079-0023.2023.02.02","DOIUrl":"https://doi.org/10.20998/2079-0023.2023.02.02","url":null,"abstract":"Software quality is a critical aspect of software development that significantly impacts business performance and customer satisfaction. However, defining software quality can be challenging, as different sources provide various definitions and perspectives. The article presents a literature review of software quality, acknowledging an ongoing debate over the years regarding the definition of software quality and the methods used for its assessment. Among all the different ideas about software quality, the article highlights key concepts that are crucial in understanding software quality: meeting requirements, satisfying users, using software features, and spotting defects. The article also checks out international standards like ISO/IEC 25010:2011 and ISO/IEC 5055:2021, introducing terms such as \"Quality in use\" and \"Structural Quality.\" Unveiling a tripartite perspective elucidated in international standards—internal quality, external quality, and quality in use - the article underscores the intricate interplay between subjectivity and objectivity. The subjective dimension, influenced by user perception and contextual factors, is juxtaposed with more objective criteria such as conformance to requirements and the absence of defects. The standards provide helpful perspectives, but the human side of things, like user feelings and specific contexts, makes finding a universal definition tricky. The pivotal role of business analysis and requirements engineering in ensuring software quality is underscored. Business requirements, stakeholder needs, and the quality of functional and non-functional requirements emerge as integral components. The article argues that software quality is intricately tied to the quality of its requirements, presenting a dual perspective: compliance with quality criteria and alignment with stakeholders' expectations and business goals. Practical software quality assessment is built upon the foundational understanding of contextual nuances, user needs, and operational conditions, all discerned through business analysis.","PeriodicalId":391969,"journal":{"name":"Bulletin of National Technical University \"KhPI\". Series: System Analysis, Control and Information Technologies","volume":" 47","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138962004","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
SPECIFICATION FORMALIZATION OF STATE CHARTS FOR COMPLEX SYSTEM MANAGEMENT 用于复杂系统管理的状态图的规范形式化
D. Nikitin
{"title":"SPECIFICATION FORMALIZATION OF STATE CHARTS FOR COMPLEX SYSTEM MANAGEMENT","authors":"D. Nikitin","doi":"10.20998/2079-0023.2023.01.16","DOIUrl":"https://doi.org/10.20998/2079-0023.2023.01.16","url":null,"abstract":"This article presents a formalization approach for the requirements of object-oriented programs with state machines, using a spacecraft control system as a case study. It proposes a state pattern implementation, where each state is represented as a class with clearly defined responsibilities, and the transitions between states are controlled by the state objects themselves. Additionally, the application of model checking, theorem proving, and code generation techniques are discussed. The effectiveness of the proposed approach in ensuring compliance with the specified requirements is demonstrated, while also identifying potential drawbacks and limitations of the approach. The implementation is validated using a range of formal verification techniques, including model checking and theorem proving. The article also discusses how the approach can be extended and applied to other complex systems. Overall, the valuable insights into the formalization of requirements for object-oriented programs with state machines are provided, offering a practical and effective approach for verifying the correctness and completeness of such implementations. The results of this work have important implications for the development of safety-critical systems and can potentially improve the quality and reliability of software systems in various domains. By using mathematical models and rigorous formal methods, it is possible to detect and eliminate errors early in the development process, leading to higher confidence in the correctness of the final product. Future research in this area could explore the use of more advanced techniques, such as model-driven development and automatic code synthesis, to further streamline the software development process. Additionally, the development of more efficient and user-friendly tools could make these techniques more accessible to a wider range of developers and organizations. Altogether, the combination of formal methods and software engineering has the potential to revolutionize the way software systems are designed, developed, and verified, leading to safer and more reliable software for critical applications.","PeriodicalId":391969,"journal":{"name":"Bulletin of National Technical University \"KhPI\". Series: System Analysis, Control and Information Technologies","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130209616","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
USING LONG SHORT-TERM MEMORY NETWORKS FOR NATURAL LANGUAGE PROCESSING 使用长短期记忆网络进行自然语言处理
Kostiantyn Onyshchenko, Y. Daniiel
{"title":"USING LONG SHORT-TERM MEMORY NETWORKS FOR NATURAL LANGUAGE PROCESSING","authors":"Kostiantyn Onyshchenko, Y. Daniiel","doi":"10.20998/2079-0023.2023.01.14","DOIUrl":"https://doi.org/10.20998/2079-0023.2023.01.14","url":null,"abstract":"The problem of emotion classification is a complex and non-trivial task of language interpretation due to the natural language structure and its dynamic nature. The significance of the study is in covering the important issue of automatic processing of client feedbacks, collecting opinions and trend-catching. In this work, a number of existing solutions for emotion classification problem were considered, having their shortcomings and advantages illustrated. The evaluation of performance of the considered models was conducted on emotion classification on four emotion classes, namely Happy, Sad, Angry and Others. The model for emotion classification in three-sentence conversations was proposed in this work. The model is based on smileys and word embeddings with domain specificity in state of art conversations on the Internet. The importance of taking into account the information extracted from smileys as an additional data source of emotional coloring is investigated. The model performance is evaluated and compared with language processing model BERT (Bidirectional Encoder Representations from Transformers). The proposed model achieved better performance at classifying emotions comparing to BERT (having F1 score as 78 versus 75). It should be noted, that further study should be performed to enhance the processing by the model of mixed reviews represented by emotion class Others. However, modern performance of models for language representation and understanding did not achieve the human performance. There is a variety of factors to consider when choosing the word embeddings and training methods to design the model architecture.","PeriodicalId":391969,"journal":{"name":"Bulletin of National Technical University \"KhPI\". Series: System Analysis, Control and Information Technologies","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114228140","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
ENHANCING SECURITY IN SOFTWARE-DEFINED NETWORKING THROUGH ROUTING TECHNIQUES EXPLORATION 通过路由技术探索增强软件定义网络的安全性
A. Levterov, Hanna Pliekhova, Maryna Kostikova, N. Berezhna, A. Okun
{"title":"ENHANCING SECURITY IN SOFTWARE-DEFINED NETWORKING THROUGH ROUTING TECHNIQUES EXPLORATION","authors":"A. Levterov, Hanna Pliekhova, Maryna Kostikova, N. Berezhna, A. Okun","doi":"10.20998/2079-0023.2023.01.02","DOIUrl":"https://doi.org/10.20998/2079-0023.2023.01.02","url":null,"abstract":"In today's world, network security is a key issue of information security. Virtual Networks have become an integral part of modern IT infrastructure, which presents us with challenges in the field of security. One solution to this problem is the use of software-defined networking (SDN), which provides a means to control and manage network traffic. However, as with any technology, SDN has its vulnerabilities that must be considered when deploying it. One of the tools that helps to take into account the vulnerabilities of network infrastructure is the Common Vulnerability Scoring System (CVSS) standard. It allows you to quantify the level of vulnerability of the infrastructure, which enables effective network protection. Analysis of the CVSS standard is an important stage in the development of a network security strategy. This paper analyzes the standards for building software-configured networks. It is noted that SDN is a modern approach to the design, construction, and operation of information communication networks. Using SDN makes it possible to directly program and dynamically manage the network, as well as to abstract the functionality of the infrastructure layer. However, the growing interest in SDN has revealed the shortcomings of their application in the fight against cybersecurity threats. The SDN architecture itself, external malicious attacks, and insufficient access control and encryption tools were found to be the main security challenges. The use of secure routing tools based on vulnerability metrics is proposed to increase the level of SDN data plane network security. According to the conducted analysis of SDN data plane vulnerabilities and the functionality of routing tools, the authors recommend using the CVSS standard to quantify the level of infrastructure vulnerability during the development and research of promising approaches to secure routing in the data plane of software-configured networks.","PeriodicalId":391969,"journal":{"name":"Bulletin of National Technical University \"KhPI\". Series: System Analysis, Control and Information Technologies","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121423427","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
DEVELOPMENT OF THE EVAPORATOR CONTROL SYSTEM IN THE ACETIC ACID PRODUCTION PROCESS BASED ON THE MPC-REGULATOR 基于mpc调节器的醋酸生产过程蒸发器控制系统的研制
O. Zhuchenko, A. Korotynskyi, A. Abramova, Dmytro Chepov
{"title":"DEVELOPMENT OF THE EVAPORATOR CONTROL SYSTEM IN THE ACETIC ACID PRODUCTION PROCESS BASED ON THE MPC-REGULATOR","authors":"O. Zhuchenko, A. Korotynskyi, A. Abramova, Dmytro Chepov","doi":"10.20998/2079-0023.2023.01.03","DOIUrl":"https://doi.org/10.20998/2079-0023.2023.01.03","url":null,"abstract":"In most cases, the initial product of the acetic acid production process is purified by rectification. Since the rectification process consists in separating the mixtures into phases based on the boiling point, it becomes clear that the temperature and concentration of the processed mixture are quite important technological parameters. Usually, these technological parameters are set by the boiler at the distillation column, which is also called the cube of the column. That is why there is a need for high-quality and effective management of the boiler as one of the important technological objects. A boiler control system based on the MPC regulator was developed and analyzed in this work. The operation of the MPC regulator is based on determining the behavior of the object and predicting its future behavior, after which it is brought to the desired trajectory by optimizing the control over a certain period of time. The period of time during which the calculation of the optimal trajectory is carried out is also called the horizon. The definition of the horizon affects the nature of the control performed, so its choice should be based on the nature of the dynamic properties of the control object. That is why, when developing these regulators, it is necessary to study the nature of the influence of these parameters on the course of the process. As a result of the study, management strategies were obtained for different values of forecasting horizons. Having analyzed the results of the controller at different settings of the forecasting horizon, it can be concluded that when the forecasting horizon is increased, the time of the transient characteristic increases, but overregulation also decreases. Therefore, when choosing the optimal value, it is necessary to be guided by the impact of adjustments on the process.","PeriodicalId":391969,"journal":{"name":"Bulletin of National Technical University \"KhPI\". Series: System Analysis, Control and Information Technologies","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134195179","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
MODELING THE LEVEL OF DISSATISFACTION OF THE NEEDS OF RESIDENTS OF SMALL TOWNS IN THE DECISION SUPPORT SYSTEM FOR WATER SUPPLY IN EXTREME CASES 极端情况下小城镇供水决策支持系统中居民需求不满程度的建模
O. Melnykov, Oleksij Zakabula
{"title":"MODELING THE LEVEL OF DISSATISFACTION OF THE NEEDS OF RESIDENTS OF SMALL TOWNS IN THE DECISION SUPPORT SYSTEM FOR WATER SUPPLY IN EXTREME CASES","authors":"O. Melnykov, Oleksij Zakabula","doi":"10.20998/2079-0023.2023.01.07","DOIUrl":"https://doi.org/10.20998/2079-0023.2023.01.07","url":null,"abstract":"The problem of ensuring water supply to small settlements in extreme cases is considered. It is stated that the authors previously formulated and solved the problem of creating a decision support system, which allows to calculate the optimal route of movement of a water tank with data on the number of residents in each district and the distances between districts. Using a number of parameters (average service time, tank volume, average percentage of the population going out for water, restrictions on the volume of water dispensed, etc.), the system allows you to make a schedule (schedule) of the movement of the tank, as well as give recommendations on increasing the number of these tanks and their optimal distribution by districts, to determine the places of their best location in each district for the maximum satisfaction of all its residents. Currently, a mathematical model has been developed for calculating a special coefficient that allows to assess the level of dissatisfaction of residents' needs in the provision of drinking water. The proposed coefficient contains three components, namely, the ratio of the volume of the recommended dispensing of the maximum possible number of liters per person to the calculated one; assignment of real \"time on the road\" to optimally calculated; the average relative distance from the calculated center of the district. The created model is added as an additional module to the existing decision-making support system, examples of the system's operation during route calculation and the position of tanks supplying the city of Toretsk, Donetsk region are given. The examples show that the reason for the biggest dissatisfaction is the insufficient number of cars, in second place is their not very good location; available time has almost no effect on the result. Increasing the number of machines to two reduces the first component of the coefficient to unity. The results indicate the possibility of reducing the indicator from 1.305 to 1.087.","PeriodicalId":391969,"journal":{"name":"Bulletin of National Technical University \"KhPI\". Series: System Analysis, Control and Information Technologies","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129402042","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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