ISSN 0236-235X (P)
ISSN 2311-2735 (E)


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Publication date:
16 September 2020

Journal articles №2 2020

11. Modified algorithm for building an occupancy grid from multi-lidar point cloud [№2 за 2020 год]
Authors: I.O. Shepel ( - Scientific Design Bureau of Computing Systems, Institute of Computer Technologies and Information Security of Southern Federal University (Research Engineer, Postgraduate Student);
Abstract: The paper considers building a possibility model problem for the environment using data from several sensors installed on a robotic platform. This is the key problem for solving the autonomous movement problem without using any a priori information. Several sensors usage due to the sensor physical limi-tations and to reduce blind spots around autonomous robotic platforms. The work aim is to improve occupancy grid building by adding the ability to process data from several independent sources. The paper presents an algorithm for constructing an occupancy grid for a technical vision system consisting of several spaced lidars. There is an approach to combining data from different sensors without requiring hardware data synchronization. This merge occurs at the algorithmic level and does not impose any restrictions on the number of sensors or on the physical nature of their data. It allows processing point clouds from sensors independently, thus reducing the computational complexity compared to processing a combined point cloud. In addition, there is a ray-tracing algorithm extension, which takes into account the placement of several leaders on a robotic platform and combines the view fields for these sensors, which allows them to get a more complete model of the cross-country environment. The described modified algo-rithm for building an adaptive safety buffer around obstacles on the occupancy grid makes it possible to plan a trajectory at an equal distance from objects in complex scenarios.
Keywords: occupancy grid, LIDAR, point cloud, data merging, obstacle detection, autonomous movement
Visitors: 299

12. User authentication based on the keystroke dynamics in the process of using industrial control systems [№2 за 2020 год]
Authors: M.V. Tumbinskaya ( - National Research Technical University (Associate Professor, Department of Information Security Systems), Ph.D; N.F. Asadullin ( - National Research Technical University (Student); R.R. Murtazin ( ) - National Research Technical University (Student);
Abstract: There are modern industrial control systems ubiquitously. The complex architecture of such systems, the requirements of process continuity and access to the Internet make them easily vulnerable to cy-bercriminals and cyber-attacks. Currently, there is no full protection for the components of industrial automated control systems, so there is a need for adequate protection and increasing the information security level. As the domain knowledge analysis shows, 82 % of industrial enterprises cannot resist the internal intruder, who seeks to penetrate the technological network from the corporate network, after gaining access to the network technological segment, the attacker has wide opportunities for malicious influ-ence on the components of industrial control systems. In 2018, the number of new vulnerabilities in the industrial control system components increased by 30 % compared to 2017. A significant proportion of vulnerabilities in industrial control systems have an association with incorrect authentication or exces-sive user access rights. Moreover, more than half of the vulnerabilities can be exploited remotely. The paper presents an overview of information security vulnerabilities of industrial automated sys-tems. Based on the analysis of the subject area, the authors propose a three-level model for improving the accuracy of user authentication based on the keystroke dynamics, which will increase the security level of automated control systems. The authors conducted an experimental study, the results of which showed a high ability of the proposed model for access differentiation for legal users and hackers, tak-ing into account minor changes in the keystroke dynamic parameters, to increase the user authentica-tion accuracy. The user authentication authenticity in practice was 97.5 %.
Keywords: authentication accuracy, typing biometrics, keystroke dynamics, biometrics, authentication, clusterization
Visitors: 306

13. Response contextual ranking on relative metrics in dialogue assistance systems for users [№2 за 2020 год]
Authors: N.R. Gafurov ( - The National Research University of Information Technologies, Mechanics and Optics (Postgraduate Student);
Abstract: The subject of this paper is dialogue systems for assisting users of web applications or onboarding sys-tems. The paper contains dialog systems in general, the probable reasons for their current updating, the conditions for their feasibility, their types, and justifies the choice of the type for the described system. We have studied the help systems that make it necessary to answer users' questions based on the currently viewed section or a web application page, in addition to taking into account the semantic rel-evance of the response to the query. At the same time there remains the need to give universal answers without taking into account addi-tional conditions that apply to all pages of a web application to reduce the amount of data storage used and speed up the processing of incoming requests. The paper describes the status quo in the ranking algorithm field, the system conditions of assisting users for applying ranking algorithms and describes the developed algorithm for response contextual ranking by relative metrics in dialogue systems for assisting users provides the algorithm application example. The paper’s purpose is to describe the algorithm for ranking responses to user requests in accord-ance with the request context in dialogue systems based on answer lists. This algorithm is for use in dialogue systems based on lists in which the user's request relevance and responses from the list are based not only on the request semantic proximity and response but also on the condition relevance for applying the response from the list and the conditions in which the user is at the time of the request. Such systems in addition to user assistance systems, include systems oper-ating on the “messaging-as-an-interface” principle. The paper also gives promising areas for further re-search.
Keywords: dialogue systems, question-answer systems, natural language processing, artificial intelligence, rankings, messaging as an interface
Visitors: 255

14. Integration methods analysis for the development of information-analytical systems on inorganic substances properties [№2 за 2020 год]
Authors: V.A. Dudarev ( - National Research University Higher School of Economics (Associate Professor), Ph.D; I.O. Temkin ( - National University of Scince Research Technological "MISIS" (Professor, Head of Chair), Ph.D; Kornyushko V.F. ( - Lomonosov Moscow State University of Fine Chemical Technologies (Professor, Head of Chair), Ph.D;
Abstract: The paper considers the system analysis application to formalize information processes that occur in integrated information systems (IS) and develop a system of recommendations for choosing one of the integration methods for solving practical IS consolidation problems. The analysis starts with the identification of the basic information processes occurring in local IS and continues with the studying of their transformation in integrated systems built using three consoli-dation methods: Enterprise Application Integration (EAI), Enterprise Information Integration (EII) and software for extracting, converting, and loading data (Extract, Transform, Load – ETL), based on data warehouse technology. The authors synthesized a generalized scheme of integration methods for heterogeneous infor-mation systems, and based on it, compared the methods using ten criteria. Based on the comparison re-sults, the authors offered recommendations for choosing the preferred method of heterogeneous infor-mation systems integration. There is a possibility to use ETL and EII methods together to achieve the optimal performance of the integrated data source. Since none of the methods covers all the needs arising from the consolidation of information systems, there is a methodology for their joint use for the closest integration of information systems. Briefly, the paper reviews the practical application results of the developed integration methodolo-gy for the IS consolidation in the inorganic materials science field, both domestic and foreign: there is a created web-service set, which is the main technical means that provides interaction of distributed cross-platform information systems on the properties of inorganic substances for data consolidation, and the user interface of a single entry point, allows any user to search and view in-formation on the properties of substances contained in integrated information systems.
Keywords: nformation processing, data integration, application integration, integration methods comparison, criteria for integration method selection
Visitors: 276

15. Simulation of a collision of two atoms over a condensed phase surface [№2 за 2020 год]
Authors: L.V. Pletnev ( - Tver State Technical University (Professor), Ph.D; S.A. Zheltov ( - Tver State University (Senior Lecturer);
Abstract: Evaporation of a substance from a condensed phase surface is of interest from both practical and theo-retical points of view. It is possible to describe the process of departure of atoms from the condensed phase surface at the microscopic level only using the molecular dynamics method, the Monte Carlo method, or the Boltzmann equation. This raises the problem distributing collisions of atoms over the condensed phase surface. Simulation of evaporation even from microscopic areas of the condensed phase in a short period of time is an unrealistic task for modern computer technology due to many calculations. The description of the interaction of two molecules in the gas phase is a significant problem. The article analyzes the problem of collision of two atoms over the condensed phase surface after departure from its bounded areas. Computer experiments involved using a model of rigid spheres. Monte Carlo simulation involves statistical processing of the results of a large number of experi-ments. Using sequential calculations on standard CPUs is inefficient in terms of program execution time. A sequential algorithm that implements simulation of collisions of 1 000 000 atoms requires about 10 hours of machine time. For greater reliability of the results, it is desirable that a minimum of 300 000 000 atoms collide in each experiment. The calculation algorithm has data parallelism and can be adapted for parallel calculations on graphics processors with the CUDA architecture, which makes it possible to significantly reduce the actual program execution time and increase the reliability of results by increasing the number of played pairs of atoms.
Keywords: modeling, collision, atom, monte-carlo method, parallel computing
Visitors: 288

16. Approaches to creating ontologies for automated systems in machine-building industries [№2 за 2020 год]
Authors: Burdo G.B. ( - Tver State Technical University, Ph.D; Semenov N.A. ( - Tver State Technical University, Ph.D; N.V. Vorontsov ( - Bauman Moscow State Technical University (Postgraduate Student);
Abstract: Most domestic machine-building enterprises that produce high-tech products have a characteristic by a product multiplicity, frequent changes in product types, and it is necessary to reduce the time period provided for the implementation of the product life cycle stages. This is possible by using automated design and manufacturing systems. The ontological approach to the creation of automated systems is quite promising, but its applica-tion may be hampered by the use of not entirely rational methods. The authors considered system prin-ciples and gave the subject system mathematical description of ontologies. The ontology function is a feature that defines the ontology system and follows from the goals of ontology development. In addition to the function, the authors proposed to define an ontology system by a set of elements; links between the elements of this ontology system with other ontology systems; parameters of each el-ement in the ontology; time parameter; ontology by the solution area; source data area; and problem area. Based on the product life cycle methodology, the authors showed that the identified 12 stages of the life cycle have a characteristic by the fact that within each of them one problem has a solution, which is typical for machine-building production. This means that there is a single ontology system for the de-sign process in an automated system for this stage, and within a single stage there are several ontology systems linked together as having significant areas of intersection. In each case, the composition of the product life cycle stages needs to be clarified. There is an assumption to specify such stages, as well as to specify the tasks to be solved at the stages of the product life cycle based on the study of the organi-zation's processes.
Keywords: automated design and control systems, machine tool industry, ontology, product life cycle, process management, systemic approach
Visitors: 308

17. Architecture and functioning modes of a decision support system for dispatch and organizational management of gas supply facilities [№2 за 2020 год]
Authors: R.R. Kantyukov ( - Scientific-Research Institute of Natural Gases and Gas Technologies – VNIIGAZ (Associate Professor, Deputy Director General for Science), Ph.D;
Abstract: The paper describes the developed decision support system for dispatch and organizational manage-ment of gas supply facilities, its architecture, operating modes and software. The system has been created on a universal software platform 1C:8 with an open architecture. The decision support system architecture includes eight software modules, a center dispatcher’s work-station with a subsystem for visualizing gas supply and gas distribution processes. The purpose of the decision support system is to provide control over a technological process of gas transportation; to control valves to disable repair or emergency sections of the regional gas supply sys-tem, to prevent or localize possible accidents. All data collected by the system at the facilities of the regional gas supply system (crane platforms, gas distribution stations, head gas distribution points, cupboard distribution points) are transferred to the Dispatch center for an automated workstation and displayed on a mnemonic diagram in a convenient form. Further, this information is transmitted to the Central dispatch, where the entire distribution gas pipeline system is already displayed on the main mnemonic diagram. The decision support system has tools for interaction with other functional and organizational au-tomated systems, such as an automated system of accounting and tax records, an automated system for monitoring and ensuring the safety of facilities of the regional gas supply system including an automat-ed system for commercial metering of gas consumption and control of gas leakage control devices in domestic production facilities, an automated system for managing energy and resource efficiency and controlling energy and resource efficiency, an automated personnel management system based on in-creasing staff motivation for the development of informatization and the widespread use of information and computer technologies. The developed decision support system of dispatch and organizational management of gas supply facilities is designed to make multi-attribute and multi-criteria decisions in the problems of monitoring and managing gas distribution between consumers in regional gas supply systems.
Keywords: decision support system, software and information support, databases, automated workstation, gas supply system
Visitors: 281

18. Software for an automated control system for electron beam welding of thin-walled structures [№2 за 2020 год]
Authors: Tynchenko V.S. ( - Academician M.F. Reshetnev Siberian State Aerospace University (Associate Professor), Ph.D; V.E. Petrenko ( - Reshetnev Siberian State University of Science and Technology, Department of Information and Control Systems (Postgraduate Student); A.V. Milov ( - Reshetnev Siberian State University of Science and Technology, Department of Information and Control Systems (Postgraduate Student);
Abstract: The paper proposes a solution to the automated control problem of the technological process for elec-tron beam welding of components and spacecraft parts. There is a specific analysis of the electron beam welding process, which makes it obvious that it needs to be automated using a software system. Using the developed automated system allows to increase the problem accurately and the main technological parameters reproducibility of the electron beam welding process, such as beam current, glow, beam focusing, welding speed. The software product is an application for the Windows operating system that is compatible with versions of Windows XP/7/8/8.1/10. The application was by using the high-level programming language C ++ and the integrated devel-opment environment Embarcadero RAD Studio XE7. Development was with using an object-oriented approach. The paper shows the software control system structure, its operation algorithm in the block diagram form, as well as a screen form diagram. The software solution presented in the framework of this paper contains the functionality for setting such parameters of the electron beam welding process as the welding speed, start current, rise time, and fall time. The software also solves the controlling parameter problems such as accelerating voltage, welding speed, beam current, focusing current, and glow cur-rent. The target process parameters are manually set by the user, and the process control is in software. In addition, it is possible to view the process parameter data graphs. Solution testing was as part of a bench test series, which results showed a fairly high-quality control of the electron beam welding tech-nological process.
Keywords: beam focusing, software product, electron beam welding, spacecraft parts, automated management, an automated system issue
Visitors: 298

19. About software for planning measures to reduce power losses from current asymmetry in 0,4 kV networks [№2 за 2020 год]
Authors: Balametov A.B. ( - Azerbaijan Scientific-Research and Design-Prospecting Power Engineering Institute, Azerbaijan State Oil and Industry University (Professor, Head of a Scientific Direction), Ph.D; A.K. Salimova ( - Azerbaijan State University of Oil and Industry (Associate Professor, Scientific Secretary), Ph.D; N.I. Gadzhiev ( - Sumgait State University (Vice-rector, Senior Lecturer, Department of Electromechanics); A.B. Balametov ( - Azerbaijan State University of Oil and Industry (Professor), Ph.D;
Abstract: The increase in the electric receiver power with non-linear and asymmetric load character affects the deterioration of the electric energy quality in power supply systems. As a result, electrical equipment designed to operate in the electrical system at a certain level of electrical energy characteristics is op-erated in inefficient modes. This leads to a decrease in the efficiency of both the power supply systems themselves and the consumers connected to them. As a result, there is growing interest in calculating power losses from current and voltage asymmetry in 0,4 kV electric networks and in the corresponding software for estimating power losses from current and voltage asymmetry in electric networks. To determine the electricity quality in 0,4 kV electric networks, measurements were with using the SIMEAS q device. The voltage in the phases is asymmetric and varies between 211–228 V, while at the end of the feeder, the voltage varies between 145 and 228 V. The change in active power on the head section of the feeder for a day is 2–7 kW, in the load phases varies within 15–50 % of the full load, the change in reactive power in the phases is within 0,8–1,6 kVAr. Consumers with non-linear and non-symmetrical load patterns that are far from the power center have less than normal voltage levels dur-ing 30 % of the day. The authors developed a program for calculating asymmetric modes and power losses for four-wire electrical networks of 0,38 kV modes with zero wire. There is a power loss calculation for asymmetric modes of a four-wire electric network with zero wire.
Keywords: the software, electric networks 0,4 kv, electric networks 0,4 kv, power quality, asymmetric load, current unbalance, measurements, power quality indicators, power losses
Visitors: 282

20. Requirements for the software environment of automated flight data analysis [№2 за 2020 год]
Author: E.M. Eremin ( - Chkalov State Flight Test Center (Test Engineer); A.V. Nagornov ( - Chkalov State Flight Test Center (Deputy Head of Department – Branch Manager);
Abstract: In aircraft tests, as well as in flight researches and semi-natural experiments on aviation issues since the middle of the last century, there is an automated processing problem for the tabular time series of experimental data. Modern data analysis software provides a solution to the flight information analysis problems, but a universal software environment for these purposes does not exist: aviation profession-als encounter with the necessity to use several different applications, which slows down the work. An urgent problem is to create a specialized software environment focused on aviation topic needs. To produce the requirements for the new software environment, there are the working typical ele-ments with flight information: data filtering according to specified criteria, process dynamics visualiza-tion on the graph of parameter dependence on time, time-series derivatives addition, data visualization on the graph of parameter dependence on another parameter, determination of the generalizing calcu-lated indicator value on the entire record or its fragment basis, relationship determination between pa-rameters, multiple linear constructions and nonlinear regression models. For each of the standard elements, there is a practical work example with the performing experiment results. There are also existing application examples that solve specific problems with acceptable or maximum possible quality. This paper contains the system general architecture. The authors proposed the use of the model–view–controller scheme, development in the C++ programming language using the object-oriented pro-gramming patterns observer, linker and strategy, as well as the Row class basic code, each object of which contains one data table column. The quantitative data of a table column in an object of the Row class is in the standard C++ vector container, which contains double type elements.
Keywords: flight information, experimental data analysis, time series smoothing, plotting, regression models, software requirements, application architecture
Visitors: 264

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