Software & Systems

Articles of journal № 1 at 2018 year.

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21. Network-centric control based on micro and macro models of traffic flows [№1 за 2018 год]
Author: S.V. Mikheev
Visitors: 6887
A methodological basis of the technology of network-centric traffic management is taxonomic models of complex intelligent transport geoinformation environment ITSGIS. Geoinformation analysis and taxonomy design led to the de-velopment of an evolutionary technology model of flows behavior on a road network. Network-centric coordinated flow control allows organizing traffic, increasing network bandwidth and improving the environment by reducing transport delays. Any module of the simulation environment ITSGIS localized informationally, as a software equivalent of a class of transport infrastructure objects, is characterized by the triad <ТуреOb, TFunction, Algorithm>, where ТуреOb is a type of class objects, TFunction means actions with objects that are variables of the type ТуреOb, Algorithm means behavior schemes of class instance objects. TFunction and ТуреOb are exported from a module class, Algorithm are encapsulated in it, so that the passivation and activation of Algorithm elements outside the module is mediated. It is produced through the invoking TFunction elements. The ultimate goal of the local control is switching traffic lights within one intersection. ТуреOb for this task are objects of the class “Reguliruemy_Perekrestok”, TFunction is the method MLocalControl. This task is divided into partial tasks (Algorithm): phase formation, arrangement of phases, correction of durations, formation of transition intervals etc. A control purpose at an intersection is ensuring safe and efficient movement. A fundamental criterion of the algorithms efficiency is the amount of delay. When calculating network-centric control using coordination programs, the problems are solved using the graphical analytic method and determination of a phase shift. Object-oriented geotechnologies allow modeling a macrostructure of varying complexity with an arbitrary set of inherent properties in the ITSGIS. Simulation of transport flows passing through the transport network (waysides, intersections, rings, railway crossings, tunnels), which include transport infrastructure objects (regulated and unregulated pedestrian crossings, traffic lights, road signs, fencing, speed breakers, etc.), uses different representation models (micro models, macro models, multi-agent models, intelligent social objects).

22. System analysis of the transport infrastructure in gis environment [№1 за 2018 год]
Author: T.I. Mikheeva
Visitors: 7228
In terms of system analysis, among the tasks solved in the framework of managing transport infrastructure functioning, a separate task is monitoring of road network characteristics, traffic flows, means of traffic control. The solution of such problems requires tools that enable these processes by universal creation means and dynamic modification of objects. The models of the taxonomy serve as a methodological and information base for constructing a geoinformation control system for transport infrastructure operation. These models form the basis of object-oriented design tool environments that are focused on complex systems development. The intelligent transport GIS ITSGIS is a tool for geodata storing and processing. It has a great potential in the field of intelligent decision support. ITSGIS scope is based on tasks of network-centric management. Neural network technologies provide ITSGIS intelligence. Neural networks help forming a universal machine that solves a variety of specific tasks from different domains, including in management of transport processes. One of the ITSGIS subsystems is the system of expert deployment of traffic organization technical means on thematic layers of an electronic map, which is designed to check the correctness of road signs and traffic lights installation. To identify areas of accident clusters on the map, the system uses methods based on intelligent Data Mining technologies. A geoinformation component of ITSGIS keeps records on geoobjects (polygon, line, point) of an electronic map with their semantic content (geoobjects’ purpose, affiliation, scanned documents, citizensэ contacts).

23. A model of modification of intelligent agents types in the AnyLogic system dynamics methodology [№1 за 2018 год]
Authors: Mutovkina N.Yu., Semenov N.A.
Visitors: 5935
The article considers the model of changing a psycho-behavioral type of intellectual agents during information interaction. Information interaction is carried out when the agents solve some creative problem. According to the results of the study, each agent, which is involved in solving a complex creative problem, strives to influence other agents in order to attract them to its side. During the interaction of agents, the psycho-behavioral type of many of them changes. A compromise type is the best for successful operation of a multi-agent system. Agents with a compromise type are always ready to sacrifice their own interests for the sake of a common goal. Such agents are constantly in search of a better solution to the set task. They have a minimal need to engage in the fight for resources, provided that the latter are sufficient and there are possibilities for resolving conflicts. However, the existence of other types of agents also can not be disregarded. The positive influence of agents of a compromise type on agents of the forcing and deviating types leads to their change to a compromise psycho-behavioral type. The minimum number of forcing and evading agents in the system ensures the greatest effectiveness of a multi-agent system, the quickest solution of a creative problem. The model of agent interaction, leading to the change of their psycho-behavioral type, is developed based on the AnyLogic system dynamics methodology. The original experiments allowed determining the magnitude of the influence of administrative actions on the behavior of agents of each type. System dynamics here was a quantitative tool that allows analyzing the cause-effect relationships within a multi-agent system.

24. Algorithm and software of automated process control system with established product parameters [№1 за 2018 год]
Authors: Niyonsaba T., V.A. Pavlov
Visitors: 5028
The quality of a product, which was manufactured during some technological process, is evaluated using its input parameter values. For example, the main fermentation process creates beer, its readiness is characterized by the quantity of alcohol, acids, alkali in beer wort, extract content value, etc. The dynamics of product parameters changes is often different or mixed, external influences are unpredictable, so control of such processes is a complex scientific problem. It is particularly difficult to predict parameter values for a specified time, as well as to determine the technological process completion time taking into account the impact of external factors and controlling action of the automated process control system. The paper presents the developed models and algorithms, which can be used by the automated process control system with es-tablished product parameters. The paper focuses on the problems of predicting product parameters dynamics, as it largely affects the product quality and its manufacturing time. The paper proposes the scheme, algorithms, models and units of the automated process control system based on the Kalman fil-ter. User screen forms and the displayed information of each unit is also presented. The algorithm is implemented in a high-level programming language C#.

25. Development of a simulation model for hydroelectric set process values for training operation staff [№1 за 2018 год]
Authors: A.V. Nikulina, L.S. Zelenko
Visitors: 6075
Training of a hydropower plants (HPP) operating personnel is one of the most effective means of professional training, as it provides an opportunity to train process control skills in a normal mode or in an emergency. A software simulator is intended for emulation of HPP technological processes, including indication, safety interlocks, and the behavior of real equipment. This is especially important for HPP operators since their work involves perception of big amounts of infor-mation. The article describes the requirements to a simulator training for HPP operating personnel and training scenarios. The paper also provides some examples of hydroelectric set (HES) process values and their corresponding trend lines. The purpose of the work is to develop a HES model that will allow simulating its modes and generating its process values in intervals corresponding to the real ones. The authors propose to consider building a HES simulation model as a problem of regression recovery. As an approach to solving the problem, the authors have chosen neural network technologies since they can simulate complex relationships between HES process values and determine its future values with high accuracy. In addition, artificial neural networks are well trained on real historical data obtained from a HES control system. There is a developed special software module for simulation HU process values. It constructs n three-layer feedforward neural networks for a group of n selected for a certain scenario input values, i.e. it models the dependence of each of n values on the remaining (n-1) ones. The paper also provides function and scripts implemented in this software module.

26. A web-model of a distributed real-time information system [№1 за 2018 год]
Authors: N.А. Ostroglazov, А.I. Chugunov, М.А. Kudrin, V.V. Elizarov
Visitors: 10119
The article describes the approaches to solving the problem of efficient use of computing resources in the design of complex web-oriented distributed systems. It also describes the development of a web real-time model of a distributed information system for competitions of academic works. The system is implemented in Yii framework in PHP. The MVC design pattern (Model View Controller) provides the interaction between the application server and the client application. The “representation” is a user interface with tools for working in the system, and a controller enables interaction between a model and a representation. The client application is based on a design pattern Module using the mechanism of closures in JavaScript. Such approach to a web system structure creates the conditions to enable centralized processing, storage and delivery of spatial data via the Internet for remote users. The system includes the separation of users by roles: Administrator, Reviewer and Participant. The article describes user activity diagrams with the roles of an Administrator and a Reviewer. Activity diagrams are built on the UML methodology (Unified Modeling Language). The developed system allows real-time applying for participation in the contest of scientific and educational works as a Contestant, reviewing, approving, rejecting and sending applications for revision, as well as generating documents that summarize the results as a Reviewer. Thus, the described system provides and controls the entire cycle of activities for organizing a contest of academic works in a web system.

27. A software complex for designing unburned monomeneral composites [№1 за 2018 год]
Authors: Petropavlovskaya V.B., D.A. Korovitsyn, Obraztsov I.V., K.S. Petropavlovsky
Visitors: 7499
The paper presents a software complex to control the synthesis of unburned building composites based on monomineralic raw materials and industrial wastes of composites, as well as separate software products to design components and process parameters. The authors apply a new approach to the design of building product raw mixtures, which makes it possible to reduce energy and resource costs in production by organizing the production of gypsum materials excluding expensive operations (technological transfers), such as raw materials baking to obtain binder and heat treatment of finished products (drying). The use of such production, which excludes the stage of obtaining a mineral binder from natural or man-made raw materials, makes it possible to significantly simplify the technological process of obtaining building materials, while reducing their production costs. It also allows using in a construction industry the waste from mining and sawing natural stone materials that are not suitable for their physical and mechanical characteristics to obtain traditional binders. The possibility of obtaining unburned materials is based on using a mechanism of non-hydration hardening of two-water gypsum. For this purpose, it is necessary to ensure the selection of an optimal granularity composition with the possibility to manage corrective and preventive actions operatively. The efficiency of the process is determined by the limiting stage organization. It is the design process that is a solution to a complex multicriterion task. Another criterion is feedback establishment, i.e. information control and analysis at the relevant stages of a technological process. The design complex assumes using separate software products that are necessary to determine structure characteristics of the non-hydration hardening system, selection of the required granularity composition of a raw mixture and the press powder optimum moisture, assignment of technological regimes based on forecasting the finished product properties.

28. Regularized orthogonal models of probabilistic characteristics with the condition of its basic properties execution [№1 за 2018 год]
Authors: Prokhorov S.A., Kulikovskikh I.M.
Visitors: 2913
The representation of a probabilistic characteristic model as Fourier series is one of the most effective methods for model complexity reduction. The orthogonal function systems are widely used to solve the problems of identification, filtering, and analysis of dynamic systems. This success is often connected to the ability of presenting long time series as a more compact model. There are different methods to guarantee stability and validity of such probabilistic characteristic orthogonal model. They include: optimizing orthogonal model parameters, using numerically stable schemes for computing Fourier coefficients, designing weighted models that allow taking into consideration the aspects of dynamic system behavior, in particular, non-stationary systems, delayed system and so on. Nevertheless, the primary focus of the paper is on the method that takes into account the requirement of executing basic probabilistic characteristics property by an orthogonal model. This method is based on the need of computing the corrections for Fourier coefficients, which are determined with regard to the basic properties of both probabilistic characteristics and basic functions. As a result, a set of orthogonal models requires different implementations depending on a problem statement and a dynamic system. This paper generalizes the previously proposed mathematical models to implement the method that allows the following: to propose a general description of modifying factors in order to take into account basic properties of functional characteristics in a matrix form; to show that the proposed estimates are identical to the estimates regularized with L2-norm; to introduce a kernel function for describing basic properties of functional characteristics. The findings of the present study prove the stability of the proposed regularized estimates. The generalized mathematical models reduce the method of computing the corrected estimates for various functional characteristics to a unique algorithm. Therefore, this significantly improves the computational efficiency of further software implementation.

29. Mathematical model of software user activity [№1 за 2018 год]
Authors: A.A. Sytnik, T.E. Shulga, N.A. Danilov, I.V. Gvozdyuk
Visitors: 5415
The article describes software usability problems. According to ISO 9241-11:1998, usability is one of the main criteria of software quality. There are different approaches and methods to analyze the software usability. However, most of them are based on the heuristic approach that is on the previously collected recommendations and hypotheses about how a user interacts with a software interface. According to the authors, one of the main problems in the development of formal methods of usability evaluation is the lack of formalized data representation. The aim of the research is to develop a software user activity mathematical model. The research is based on the idea, which is popular in modern scientific literature, that indicator of usability problems is oft-repeated similar sequences and patterns. The paper briefly describes the approaches used in software usability evaluation. It’s shown that the task of repeated pattern searching might be represented as the task of sequential pattern mining from the data mining area. The paper introduces a number of formal definitions for user activity data. The authors suggest a software user activity mathematical model based on the sequential patterns theory for a usability evaluation subject area. This model can be used for automatic usability efficiency evaluation of user interfaces.

30. Transport infrastructure model creation based on spatial and spectral aerospace information [№1 за 2018 год]
Authors: A.A. Fedoseev, T.I. Mikheeva, S.V. Mikheev
Visitors: 7065
The article considers the problem of synthesis of a thematic layer of transport infrastructure objects (TI) based on Earth remote sensing data received by space and air means. The paper describes the structure of information space of TI objects remote sensing using a stratification methodology. It also describes the main strata of the Earth remote sensing information space. These strata combine the aggregates of same type information objects and are subject for further stratification to obtain the required detailed level. The authors propose the scheme of information support for managing TI objects characteristics and condition based on the Earth remote sensing data. The levels of the scheme include strata of information and methodical infrastructures. At the same time, the functional infrastructure strata contains geoinformation model data that provides data updating stored in the database and data visualization on an electronic map. There is a model of structure-parametrical synthesis of electronic map thematic layer in the geoinformation system environment for TI objects on aerospace images. In the context of this problem, there are the developed models of TI objects extraction on high resolution space images with restricted spectral features and using hyperspectral information. These models are basic for solving the problems of defining transport network geometric characteristics and configuration changes search, as well as assessment of transport network load with TI dynamic objects (motor transport). The paper describes characteristics of objects used in the synthesis of the thematic layer of transport infrastructure objects. Since he work uses only direct deciphering features, attention is focused on brightness (spectral) and geometric features of objects of the class “Transport_network”, “Transport_vehicle”, “Road”, “Driveway”, “Roadside”, “Sidewalk”, “Bicycle path”, “Dividing_band”, “Markup”, “Natural_object”.

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