Software & Systems

Articles of journal № 2 at 2021 year.

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1. Automated decision support system for predicting the dispersion of chemically hazardous substances [№2 за 2021 год]
Authors: L.O. Chernyshev , Matveev, Yu.N.
Visitors: 3086
The paper discusses an approach to the development of a decision support system for predicting the processes of dispersion and release deposition of the emergency chemically hazardous substances, considering the operational monitoring data. The features and factors that reduce the efficiency of supervisory systems during the post-accident clean-up are determined. Most of these systems, implemented on hardware platforms of average com-puting power, do not have the mobility and autonomy sufficient for use in the workplace when toxic chemicals are released and do not provide automatic adjustment of the model parameters based on online monitoring data. The authors summarize the decision support algorithm, considering the data on the assessment of chemical contamination, the generalized scheme of which contains procedures for monitoring the state of the object, and predictive modeling. We show that the primary goal of the algorithm is to calculate the spatial boundaries of the damaging effect of toxic substances that are closest to the actual data of chemical contamination. There is a mathematical formulation of the observational data assimilation problem in the paper. To adjust the parameters of the forecast model, the authors used a functional that characterizes the degree of deviation of the simulation results from the monitoring data. We detail the functional assessment for single and multiple sensor readings in actual time. The DSS structural diagram is detailed, which contains modules for entering a priori data, model calculation, topographic binding of objects, optimization, visualization, and emergency analysis. We consider the DSS operation results on a conditional example. When developing a software layout, Mi-crosoft Visual Studio (C# programming language), a fragment of a digital map, and .NET Framework graphics are used.

2. Algorithm for direction-finding of localized objects of traffic flows on digital satellite images [№2 за 2021 год]
Authors: V.S. Tormozov , A.L. Zolkin , А.U. Mentsiev
Visitors: 2732
The paper proposes a unique algorithm for determining the direction-finding of localized objects in traffic flows based on ultra-high resolution satellite shooting data and geographical information on the location of MAC sections. The program implementation of the developed algorithm is a component module of the program traffic control system. We provide the input of the module with data on the in-terpolated model of the stage, as well as on the location and size of each localized vehicle on the stage. At the output of the module, the direction of its movement is determined for each vehicle: forward or reverse. The algorithm is based on comparing the position of vehicles and the central interpolated line of the MAC section on digital images of the sections. We have developed a unique algorithm for finding a minimum length segment from a point to a broken line on a plane. We used the algorithm as one stage of the stages of the algorithm for determin-ing the direction of movement of the vehicle at the MAC stage. The approach is based on comparing the relative position of the object and the centerline. Due to the unambiguity of correlation of the rela-tive location of centerline with central point parallel to axes of limiting rectangle of localized vehicle, the direction of motion is determined with high accuracy. Due to this, the direction of motion previous-ly detected by the vehicle is determined with high accuracy. The authors undertook a study of developed algorithms on real satellite data. Analysis of the re-search results showed that the developed algorithm for determining the direction-finding works with high accuracy. The experimental evaluation of the work consists of the formation of a calculated metric for a set of previously extracted local regions. Because the algorithm assigns the vehicle to one of the two directions of traffic, we chose the accuracy of the correct determination of the direction of move-ment as a heuristic metric. It is determined that the error in the direction definition is related to the in-accuracy in determining the coordinates of the centerline of the local road section.

3. Algorithms of the automatic text analysis for the Russian language for solving applied problems using TAWT framework [№2 за 2021 год]
Authors: E.V. Politsyna , S.A. Politsyn , S.A. Porechny
Visitors: 3836
The paper reviews the existing tools of linguistic text analysis. The authors identified the problem of selecting suitable tools, adapting them to work with texts in Russian, and integrating them with each other. This makes it difficult to use these tools both for research purposes and makes it almost impossi-ble to use them in applied systems. The paper describes the new open-source Java framework TAWT, developed by the authors, that provides convenient ready-made software tools and data structures for the main stages of text analysis in the Russian language that meet the modern requirements for perfor-mance, reliability, project build engine, etc. The paper proposes an approach to the intellectualization of information systems and business pro-cesses using software tools for linguistic text analysis to implement algorithms for automating the pro-cessing of technical documentation, which is the scientific novelty of the work. The application of the developed TAWT framework allowed implementing algorithms for automating the analysis of the text in Russian in terms of the analysis of technical documentation: validating the structure of documents and the list of abbreviations used in the document, searching for similar documents, and obtaining their brief content. All this will simplify the technical documentation management, speed up the process of its preparation, and upgrade the quality of the created documents. The algorithms of automatic text analysis implemented by the TAWT framework have been suc-cessfully applied in application systems for searching friends by interests in social networks, identify-ing fraudulent mes- sages, working with thematic synonyms, as well as for creating software tools for selecting keywords from texts in Russian and referencing them.

4. The algorithms and the program for functional models verification [№2 за 2021 год]
Authors: E.V. Burlyaeva , V.V. Kononenko , Kornyushko V.F., S.V. Razlivinskaya
Visitors: 3259
The methodology of functional modeling provides visual and understandable means of describing the domain for a wide range of specialists. The formal language for describing functional models and algo-rithms of its verifying are used in several commercial software systems but are hidden from the user. The paper proposes a formal language for describing a functional model based on graph theory. Within this language, each functional diagram is represented as a graph with marked edges. The nodes of this graph define the function blocks, the edges correspond to the arrows of the diagram. We develop rules for diagram bounds description with special nodes, the positions of the arrows using the system of roles, branching arrows as a set of special nodes, and multiple edges. The hierarchy which links indi-vidual diagrams into a single model, is defined by the relation of decomposition on graphs. A general-ized algorithm for constructing a set-theoretic representation of a functional diagram is developed. We form rules that connect the arrows of the parent and related functional diagrams in well-behaved constructed functional models. To verify these rules, a functional model verification algo-rithm has been developed. This algorithm is implemented by means of logic programming using the PROLOG language. The structure of the fact base for describing the decomposition relations, nodes, and edges of graphs is proposed. A set of predicates is provided to verify the correctness of the func-tional model description. For illustrative purposes is the verification of a generalized model of chemical manufacturing. Functional diagrams related to the detailed ratio describing single-stage chemical manufacturing, their set-theoretic representations, the PROLOG fact base, and verification results are presented.

5. Intellectualization of automated control systems development for crushing and screening complexes: information support and concept [№2 за 2021 год]
Authors: R.E. Burnashev , Logunova, O.S.
Visitors: 2122
A relevant direction of modern research is the development of intellectual support modules in various industries and designs. Now this direction has been developed in the electric power industry, mechani-cal engineering, metallurgy, and software development. However, the authors have not found published solutions for the intellectualization of an automated control systems technical part development pro-cess, considering the automation object features in building aggregates production, in particular, crush-ing and screening complexes. There are several features of crushing and screening complexes that al-low using computer-aided design systems to increase the efficiency of developing control systems for them. The paper’s purpose is the creation of the intellectualization module concept for the development of hardware for crushing and screening complex automated control systems in the PCSchematic Auto-mation electrical CAD system. We base the concept on information support developed for this CAD system, considering the experience of implementing control systems for crushing and screening com-plexes at the CJSC Ural-Omega enterprise. The developed information support provides an increase in speed and a decrease in the number of errors in electrical documentation development for control systems in the selected subject area. By the system analysis and modern software development technologies, the dominant classes, interfaces and ways of their interaction have been determined, which provide the possibility of creating an intellectu-alization module. As a result, we obtained a concept and UML diagrams for implementation of the in-tellectualization module for the development of hardware for crushing and screening complex auto-mated control systems in the PCSchematic Automation electrical CAD system.

6. Planning and computer simulation of an experiment to simulate the goal presence for a radar station [№2 за 2021 год]
Authors: Kalabin, A.L., A.K. Morozov
Visitors: 2766
The paper examines the issue of measuring the tactical characteristics of radar stations (radar), such as, for example: detection range, the number of goal coordinates and the accuracy of their determination, resolution for each coordinate, visibility zone, and others. At the moment, the tactical characteristics are determined based on technical characteristics and using a full-scale experiment, involving aircraft, laboratory aircraft, and other objects. The complexity of a natural experiment in its organization and a few goal objects, it is also costly in terms of resources (monetary, administrative, labor, time). It is proposed to collect initial data (coordinates and the number of localized targets by the radar station, coordinates and the number of simulated targets by the onboard equipment of the carrier) and further analysis (statistical processing of data from the station and onboard equipment of the carrier) to simulate the goal presence for the radar station equipment by emitting an echo signal targets at the giv-en coordinates. The echo signal is synthesized by the equipment (generator and onboard computer) lo-cated onboard the carrier (unmanned aerial vehicle). The carrier positions the onboard equipment in angular coordinates (azimuth and elevation) corresponding to the angular coordinates of the simulated target, but at a much smaller distance. The range (distance between the goal and the radar) of the simu-lated target is controlled by the onboard equipment by changing the parameters of the generated echo signal (the delay time of the emitted pulses relative to the emitted pulses by the radar equipment) cor-responding to the simulated target. The advantage of the proposed method is the expended net resource (time, labor, money) and the ability to control the number of simulated targets by changing the structure of the echo signal.

7. Simulation of three atoms collision after the concurrent emission from the condensed phase surface [№2 за 2021 год]
Author: S.A. Zheltov
Visitors: 3145
The engineering units’ calculation is based on the gas flow in complex systems. The gas-surface inter-action of the systems has great importance for optimizing the transfer process. The determining factor is the behavior of atoms and molecules in the Knudsen layer. In this layer, the greatest changes in all quantities occur: temperature, density, pressure, etc. Because there are no data on a detailed descrip-tion of the atomic motion in this layer, jumps in these quantities are introduced. In this paper, we consider the atom emission model from a limited surface area of the condensed phase into a vacuum. We assumed the atoms represent hard spheres and after colliding with each other do not form molecules. The atoms could collide with each other after the condensed phase escaped from the surface, and one of them could collide with the third atom. The author obtained the distribution density of two-atom collision that simultaneously escaping from the surface in time after escaping from the surface (first collisions) and the density of collisions of one of these atoms with a third atom (second collisions) The dependences of the distribution densities of the first and second collisions are determined de-pending on the surface temperature and the size of the vapor area. There are the distributions for the mean values of these quantities. In this work, we used parallel computing on graphics processors.

8. The analysis model and prediction of technological parameters for the process of electron beam welding [№2 за 2021 год]
Authors: Tynchenko V.S., S.O. Kurashkin , I.A. Golovenok , V.E. Petrenko
Visitors: 3075
The main purpose of the study is to create a mathematical model for the analysis and prediction of technological parameters of the electron-beam welding process using modern regression models, as well as its implementation as a software system in the Python programming language using Scikit-learn, Pandas, NumPy and Matplotlib software packages. Actually, the problem of predicting the parameters of the technological process of electron beam welding is a regression problem. There are many algorithms available for solving the regression prob-lem. Under this work, a regression analysis algorithm is used as polynomial regression with L2 regular-ization – ridge regression, as well as an ensemble of decision tree algorithms – a random forest. Using the developed predictive model will allow the technologist to more consciously approach the selection of both the range of variable parameters for research in new technological modes and to improve the quality in already developed technological modes. The application of the proposed methods will also reduce the time and labor costs for the search, development, and adjustment of the technological pro-cess. The paper describes the ridge regression algorithm, as well as an analysis of the applicability of this algorithm to the solution of the problem posed, and also checks the reliability of the forecasts obtained by their direct use. Also, the process of direct training of the model is considered based on data ob-tained in the experiment framework on the development of the technological process of electron beam welding. An analysis of the applicability of the approach showed that it is permissible to use the proposed method for technological processes with similar statistical dependences. Implementation of the pro-posed approach to predicting the parameters of electron beam welding in production will make it pos-sible to support the adoption of technological decisions when working out the technological process of electron beam welding, as well as when put into production new types of products.

9. The dynamic form model of radar target priorities using fuzzy logic methods [№2 за 2021 год]
Author: A.A. Nepryaev
Visitors: 4017
The paper focuses on creating a cognitive resource management system for a multifunctional multi-channel radar with an active phased antenna array. The author has developed a control system archi-tecture based on a radar scheduler, which provides an optimal distribution of the last resources of the radar, such as time, energy, and computing. We have created a simplified verification model of the ra-dar station, which makes it possible to automate the development and debugging of the components of the radar resource management system. To solve the problem of resource allocation, the author suggests implementing the concept of a cog-nitive management system for the case when the system plans its actions based on the analysis of the external situation and its internal state. The paper schematically describes the estimates and forecasts of the employment of energy and computing resources by using the thermal model of the transceiver modules and the model of the primary radar information processing path. The paper describes the designated efficient use of time resources because of the dynamic prioriti-zation of problems for tracking radar targets using fuzzy logic methods. The author shows how the proposed method of prioritizing radar targets affects the distribution of radar resources in situations of capacity overload when it is necessary to decide about which problems and for which goals to perform within the established time limits, and which can be queued or reset. The object of the paper is to show the results of modeling the module for prioritizing tracking problems, considering such parameters as speed, range, the direction of movement, and quality of target tracking.

10. Fundamentals of modeling a decision support system for the integrated use of surface ship air defense forces and assets [№2 за 2021 год]
Authors: Shustova N.А., Stepanov V.V.
Visitors: 3735
Based on the combat system theory, the fight against the enemy is carried out in certain physical envi-ronments or areas of armed struggle, with the aerospace enemy in the aerospace sphere. In the Navy of the Russian Federation, the fight against the air enemy is organized in anti-aircraft circuits at various levels of control. The paper considers the methodological basis for the development of an intelligent decision support system for the integrated use of air defense forces and means (fighter aircraft, anti-aircraft fire, and electronic warfare) of a tactical group of surface ships in interaction with heterogeneous air defense forces of the fleet and other types of the Armed Forces of the Russian Federation in the theater of mili-tary operations. To develop such a system, the authors propose to organize a permanent complex simulation and modeling stand. Information about the theater of military operations, enemy characteristics, and data on air defense systems should be the source information for the knowledge base of the complex simulation and mod-eling stand. On its basis, the knowledge base management system forms problem-solving models for operators of surface ship air defense calculations. In choosing the most appropriate model of action, an expert-infolog with a knowledge engineer and officials of the calculations of air defense command posts. We formed the information circulating in the complex simulation and modeling stand based on the experience of combat training, combat service, local wars, and armed conflicts extracted from reliable sources. Because of modeling on such a stand using artificial intelligence methods, it becomes possible to create a "Dynamic three-dimensional model of the fight against an aerial enemy in combat space" with a changing scale in actual time. This will make it possible to automate the schedules of the integrated use of surface ships' air de-fense forces and means as part of tactical groups, with the mandatory introduction of integrated combat control systems, and increase the effectiveness of their combat use.

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