Suchasni informatsiini sistemi最新文献

{"title":"Method of ensuring the reliability of connecting nodes to the information and communication system of the enterprise based on 5G","authors":"T. Smirnova","doi":"10.20998/2522-9052.2022.2.13","DOIUrl":"https://doi.org/10.20998/2522-9052.2022.2.13","url":null,"abstract":"The object of research is the process of building a cloud information and communication system for automation of production processes. The subject of the research is the method of ensuring the reliability of connection of nodes to the information and communication system of the enterprise on the basis of 5G. The purpose of this work is to increase the reliability of connecting nodes to the information and communication system of the enterprise based on 5G. to optimize production processes. As a result of the research, the concepts characterizing the reliability of distributed 5G information and communication networks were considered. The synthesis of functionally stable structure of the distributed information and communication network of 5G of the enterprise was formalized. The method of planning of 5G network for automation of production processes of the enterprise was developed. on the way of distribution taking into account restrictions on the minimum throughput, number of connections and reliability and construction of a communication transport segment with definition of an optimum location of cross premises. Conclusions. The developed method allows planning the optimal structure of the 5G cellular network to optimize production processes, evaluate and reduce the total cost of building the network, while providing the necessary indicators of service quality of network nodes and its reliability.","PeriodicalId":34701,"journal":{"name":"Suchasni informatsiini sistemi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47562166","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":"MODELING THE PROCESS OF TWO-FACTOR AUTHENTICATION","authors":"Bohdan Rezanov, Heorhii Kuchuk","doi":"10.20998/2522-9052.2022.2.02","DOIUrl":"https://doi.org/10.20998/2522-9052.2022.2.02","url":null,"abstract":"The relevance of research. Authentication is the process of confirming the authenticity of an object or subject of interaction in an information network by a presented identifier. Usually only one factor is used. However, most information security incidents occur due to the use of one factor. The easiest way to create an extra layer of security for accounts is to use two-factor authentication using 2FA programs. In this case, an additional step occurs, which increases the user authentication time and creates an additional load on the network. Thus, there is a need to create an additional layer of security for accounts in the “Active Directory” directory service without using an additional component on the target system and an additional step in the authentication process, thereby making the authentication process itself simpler and more responsive to the user. The purpose of the article is to develop a model of the two-factor authentication process, which will allow comparison of different approaches to its implementation. Research progress. The proposed model consists of three components: a system submodel, a threat submodel, and a security properties submodel. The analysis performed showed the advantages of using the PERT method for this problem. The simulation of the authentication process was carried out using a third-party service for checking the second factor (DUO) and the proposed method. The final PERT-diagrams are formed. A comparative analysis of these methods in terms of authentication speed was carried out. Conclusion. The developed model makes it possible to assess the quality of two-factor authentication by the selected parameter with a sufficient degree of accuracy. In particular, the proposed method showed more preferable results in terms of authentication speed compared to conventional methods.","PeriodicalId":34701,"journal":{"name":"Suchasni informatsiini sistemi","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41315185","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":"Method for controlling the frequency of eigentones for determination of the astronaut's body weight and small weight in weightlessness","authors":"O. Kolomiitsev, Volodymyr Komarov, O. Dmitriiev, V. Pustovarov, R. Oliinyk","doi":"10.20998/2522-9052.2022.2.12","DOIUrl":"https://doi.org/10.20998/2522-9052.2022.2.12","url":null,"abstract":"In the article the analysis of existent basic methods of determining the weight of body of cosmonauts and objects small weight is conducted in the conditions of weightlessness, and their features of application are similarly exposed. The most comfortable and perspective method of determining the inertial weight of body in the conditions of weightlessness the use of different sort of oscillators and devices, that allow to measure the parameters of body of cosmonaut (small weight of devices and others like that), that hesitates, is considered. It is possible to use dependence of period of vibrations of spring on b.w. of cosmonaut envisaged on her and others like that. The measuring device of weight of «ИМ-01М», his technical descriptions, composition and principle of action, is considered. Such measuring device it maybe to complement the system of weighing of astronauts and cosmonauts on the method of Karmelo Velardo, that allows to get measuring (form and sizes of cosmonaut and his motions) given about the depth of object. The object of research is oscillators and devices, that allow to measure parameters bodies of cosmonaut and objects small weight, that hesitate. The subject of research is a mathematical vehicle on determination of frequency of eigentones dynamic system. The research aims is development of method of control of frequency of eigentones for determining the weight of body of cosmonaut and objects small weight in the conditions of weightlessness. Conclusions. The method of determining the weight of body of cosmonauts and objects small weight in the conditions of weightlessness and method of his realization are offered on the change of frequency of eigentones dynamic system devices. Analytical expressions for the calculation of frequency of eigentones dynamic system devices and corresponding charts are presented. A spring-gravimetric device is worked out for realization of measuring. A chart technical decision over of device is brought, his composition and principle of action are exposed. A device is able to define weight of control object, his state (his heterogeneity, presence of liquid filler, parts that hesitate and others like that).","PeriodicalId":34701,"journal":{"name":"Suchasni informatsiini sistemi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42512978","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":"MODELING OF MOBILE ROBOT WITH OBSTACLE AVOIDANCE USING FUZZY CONTROLLER","authors":"Mahabbat Khudaverdiyeva","doi":"10.20998/2522-9052.2022.2.04","DOIUrl":"https://doi.org/10.20998/2522-9052.2022.2.04","url":null,"abstract":"This paper presents the modeling of a robot's navigation using ultrasonic sensors under uncertainty. The robot tries to avoid obstacles by using the fuzzy logic controller to process the data coming from three ultrasonic sensors. To assess the performance of fuzzy logic optimized robot navigation controller with ultrasonic sensors, which measure the distance by calculating the time spent on the object and its return, the obstacles are placed in front of, left, and right of the robot.  Mamdani fuzzy reasoning system is used for the designed controller for its intuitive properties and fewer setting parameters which reduces the amount of time spent on the programming of the controller. 25 rules are considered to cover a robot’s possible interactions with obstacles. For an easy understanding of navigation architecture and rapid algorithm implementation, in this paper, a MATLAB simulation framework is developed. MATLAB/Simulink is one of the best simulation tools required to design the architecture and verify algorithms with real-time constraints. Resultant models of the fuzzy optimized controller demonstrate the superior performance of the fuzzy logic controller with high adaptability to the environment while maintaining a sufficient level of accuracy. The designed fuzzy controller can be used in microprocessor/microcontroller-based robots owing to easiness in implementation and coding.","PeriodicalId":34701,"journal":{"name":"Suchasni informatsiini sistemi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46554063","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":"ON THE STABILITY OF THE STABILIZED MOTION OF A CARRIER ROCKET WITH A LIQUID-PROPELLANT JET ENGINE AND AN ONBOARD DIGITAL COMPUTER IN THE STABILIZATION LOOP","authors":"E. Aleksandrov, T. Aleksandrova, I. Kostianyk, Y. Morgun","doi":"10.20998/2522-9052.2022.2.05","DOIUrl":"https://doi.org/10.20998/2522-9052.2022.2.05","url":null,"abstract":"The problem of choosing the values of the variable parameters of the digital stabilizer of the cosmic stage of a carrier rocket with a liquid-propellant jet engine and an onboard digital computer in the stabilization loop, which ensures stable movement of the stage along the entire active section of the flight trajectory, is considered. The effect of the stabilizer quantization period on the stability region of a closed-loop stabilization system is considered. It is recommended to choose the intersection of stability regions corresponding to uniformly distributed moments of time along the active section of the stage flight trajectory as acceptable values for the variable parameters of the stabilizer of a non-stationary stabilization object.","PeriodicalId":34701,"journal":{"name":"Suchasni informatsiini sistemi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42677053","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":"Machine learning models for predicting the number of COVID-19 patients in Ukraine and India","authors":"Ganna Khoroshun, O. Ryazantsev, M. Koverha, S. Pokryshka","doi":"10.20998/2522-9052.2022.2.03","DOIUrl":"https://doi.org/10.20998/2522-9052.2022.2.03","url":null,"abstract":"Models for predicting the number of patients with COVID-19 using machine learning methods have been built. The data for models are obtained from various official sources, including the World Health Organization, from the beginning of the epidemic to the present time. The data in Ukraine and India were selected to teach models for predicting the number of patients with COVID-19. Algorithms of linear regression for Ukraine and gradient boosting for India proved to be the methods that provided high accuracy of the forecast for the existing data. Data analysis was performed using the Python programming language with Sklearn library which is based on SciPy (Scientific Python). In addition, the XGboost gradient boost algorithm library was used. To develop the model, multifactor prediction of time series with the delays as predictors was chosen. It is established that the such characteristics as the date of the event, day of the week, week number, month affect to the model. Model errors are smallest and forecast accuracy were estimated with the best values of 0.83 for Ukraine and 0.75 for India. The built models allow to predict the epidemiological situation in the future, to coordinate actions in different areas of health care and to carry out reasonable preventive measures at the state level.","PeriodicalId":34701,"journal":{"name":"Suchasni informatsiini sistemi","volume":"12 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41243355","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":"DEVELOPMENT OF THE METHODS FOR CALCULATING THE MAIN INDICATORS OF HEAT ISLANDS IN URBAN AREAS","authors":"Lala Bekirova, E. Mammadova, Elvira Bunyatova","doi":"10.20998/2522-9052.2022.2.06","DOIUrl":"https://doi.org/10.20998/2522-9052.2022.2.06","url":null,"abstract":"The article is dedicated to the methods developed to calculate the main parameters of “heat islands” that appear in densely built-up urban area. Although remote sensing imaging is ideally used to track and detect frequent land cover changes in urban and surrounding areas as a result of sustainable urbanization and to calculate key parameters of \"heat islands\" seen in densely populated urban areas, satellite imagery is digitally manually The transformation of a parametric image into a land cover map using existing methods of classification is a long process, and therefore methods are proposed to determine the main indicators of the impact of \"heat islands\" in urban areas. A modified building density index has been formulated, which is highly informative, involving: (a) the proposed index reaches an extremum when the known building density index BDI and NDVI are equalized, (b) when the specified maximum is reached, it is easy to calculate the LST indicator using the known regression dependences of BDI and NDVI from LST. The method has been developed to calculate the area of “heat islands” on the base of the equivalent radius calculation using the known dependence function of the building density on the distance to the center of the urban area. Our study shows that the distribution of buildings and the slope of the relief affect the surface temperature (LST), in addition, the ratios of different LSTs vary in cities of different sizes, and each city has a temperature difference in LSTs, so the urban heating island To reduce the impact, it is important to identify the characteristics of the thermal environment in cities of different sizes. Urban greening is increasingly valued by cities around the world as an effective measure to reduce the negative effects of the urban heating islands, with different numbers and types of landscape dimensions, different statistical methods used in different surveys, as well as metric scale dependence and contextual differences between cities and we can overcome these challenges by conducting comparative research on time and space using a consistent methodology.","PeriodicalId":34701,"journal":{"name":"Suchasni informatsiini sistemi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42460629","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":"TEMPORAL REPRESENTATION OF THE ESSENCES OF THE SUBJECT AREA FOR THE CONSTRUCTION OF EXPLANATIONS IN INTELLIGENT SYSTEMS","authors":"S. Chalyi, V. Leshchynskyi","doi":"10.20998/2522-9052.2022.2.08","DOIUrl":"https://doi.org/10.20998/2522-9052.2022.2.08","url":null,"abstract":"The subject of research in the article is is the processes of constructing explanations in intelligent systems using causal relationships. The aim is to develop a representation of the entities of the subject area, taking into account the temporal aspect in order to represent the binary relations in time between the properties of the same entity. The construction of temporal relations between the properties of entities makes it possible to determine the probabilistic causal relationships between the states of these entities and use these dependencies to form explanations for the implemented decision-making process in the intelligent system, taking into account possible alternatives. Tasks: structuring the objects of the subject area, taking into account their essential properties for the decision-making process, including temporal; definition of classes of essences of subject area; determination of equivalence classes of entities of the subject area taking into account changes in the properties of these entities over time; development of a temporal model of representation of essences of subject area for construction of explanations in intellectual systems on the basis of definition of dependences in time between properties of essences. The approaches used are: set-theoretic approach, which is used to describe the classes of entities and classes of equivalence of entities of the subject area; linear temporal logic, which provides a representation of the relationship between entities in the temporal aspect. The following results were obtained. The structuring of the objects of the subject area is performed taking into account their properties, which are used in the decision-making process in the intellectual system; defined classes of entities; the classes of equivalence of entities of the subject area are defined as a kind of class of entities with the same values of key attributes, which makes it possible to take into account changes in these values over time; a temporal model of representation of the essences of the subject area is developed, which takes into account their static, dynamic properties and properties of time. Conclusions. The scientific novelty of the results is as follows. An equivalence class for entities is distinguished, which contains entities with the same key static properties and different dynamic properties considering the time of their change, which allows to reflect changes in the state of the entity in the decision-making process in the intelligent system. The temporal model of representation of essences of subject area which contains classes of equivalence of essences, and also temporal communications between properties of elements of these classes is offered. The selection of classes of equivalence of entities makes it possible to present the decision-making process in the intellectual system in the form of a sequence of temporal connections between the properties of entities of the subject area, and to form on this b","PeriodicalId":34701,"journal":{"name":"Suchasni informatsiini sistemi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43576332","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":"MATHEMATICAL APPARATUS FOR MODELING OF THE PROPAGATION THE MAGNETIC FIELD ELECTRIC MACHINES WITH A GIVEN ACCURACY","authors":"L. Levchenko, V. Glyva, Nataliia Burdeina","doi":"10.20998/2522-9052.2022.2.01","DOIUrl":"https://doi.org/10.20998/2522-9052.2022.2.01","url":null,"abstract":". The problem of modeling the propagation local magnetic fields and spatially dispersed sources is large errors compared to field measurements. An important aspect of adequate modeling is the use of the correct mathematical apparatus. It is shown that in order to obtain reliable models of the propagation magnetic fields around electrical machines (generators, electric motors of different power, geometric dimensions and poles), it is advisable to apply the Gauss equation for a scalar potential. The solution of the equation in polar coordinates makes it possible to take into account not only the fundamental, but also other harmonics of the magnetic field (dipole, quadrupole, octupole). This allows, depending on the number of spatial harmonics taken into account, to obtain a model with the required accuracy (error) for predicting the magnetic field strength at any point around the machine.   It is considered in the paper that an electronic machine is an object of base radius R0. The presented approach makes it possible to unambiguously determine the location of zero field points at a distance from the source (for a quadrupole source and zero field lines, for an octupole source). The results of modeling and their verification by full-scale measurements for the most common four-pole machines (quadrupole source) are presented. The main task of modeling the propagation the magnetic field of such sources is to ensure the required accuracy based on the goals of modeling. It is shown that the modeling accuracy and the presence of zero field points are due to different field levels near the electrical machine housing for different harmonics. The dipole harmonic at the cabinet is 20% of its own harmonic. But it falls more slowly with distance. This necessitates taking into account a different number of harmonics depending on the value of the ratio R0/R, R is the distance to the point of determining the field strength from the source. Therefore, with the ratio R0/R=2/3, the eighth harmonic is essential. At R0/R=1/5, already the fourth spatial harmonic can be neglected. Such data allow you to choose a rational number of harmonics. This reduces the amount of calculations and simplifies the process of modeling the propagation of the magnetic field around the source.","PeriodicalId":34701,"journal":{"name":"Suchasni informatsiini sistemi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45164192","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":"System analysis of information and analytical support of administrative management","authors":"V. Trysnyuk, T. Trysnyuk, Anatolii Kurilo, Yurii Holovan, Yevhen Pashchenko","doi":"10.20998/2522-9052.2022.2.07","DOIUrl":"https://doi.org/10.20998/2522-9052.2022.2.07","url":null,"abstract":"Relevance. The work is devoted to solving a topical scientific and applied problem in the field of information technology - analysis of information and analytical support systems in the field of administrative management, taking into account the requirements of complexity, support management decisions based on knowledge-oriented tools, and integration of information and analytical support systems. interoperability. Results. Conceptual structures of the governing body and ASIAS are constructed, the model of information-analytical activity in the governing body is offered, ASIAS is structured with allocation of their basic structural elements. The unified architecture of ASIAS is offered, the structure of the necessary components of ASIAS realizing processes of collecting and transformation of the information (documents) is defined. The scientific results of research are the basis of a new theory of situational regulation of technological processes in the governing body in the automated processing of information flows, the application of the concept of \"executive obligation\" with the implementation of appropriate policies, theory of information document flow processing as a component of tele-traffic theory, models of research of specificity of information load of ASIAS in stationary mode, intensity of processing of document flows and interaction of processing processes, solving the problem of structuring knowledge based on the methodology of growing pyramidal networks, based on the theory of logical-linguistic information models, and ontological descriptions of information. Based on these paradigms the possibility of construction of ASIAS as complex corporate systems on the basis of the tested decisions is defined. Thus, components of the general methodology of use of information technologies should be the factors received as a result of researches of the given work.","PeriodicalId":34701,"journal":{"name":"Suchasni informatsiini sistemi","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49130766","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}