Software & Systems

Articles of journal № 4 at 2017 year.

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31. Building a unified architecture for production data integration in a mining company [№4 за 2017 год]
Authors: I.O. Temkin, I.S. Konov, A.L. Kubenova, L.G. Zartenova
Visitors: 10097
The article analyzes existing approaches to organizing information systems, such as point-to-point integration, implementation using a general database, creation of a universal data bus, as well as their modifications. It considers use of existing solutions based on ERP system, as well as custom written applications developed in mining companies in terms of mining production. The paper analyzes methods of integrating various information systems, which provide a unified information base of companies. It also considers typical mining business processes that cover the whole production and economy cycle, as well as tasks for these processes showing key features and limitations for created systems. The paper describes general data flows typical for mining companies and ways for information interaction of systems on different functional levels. The authors introduce a problem related to the necessity of changing the existing data integration architectures. They also assess the existing approaches to organizing information systems and give their pros and cons. A solution is based on a service-oriented architecture. The authors consider a possibility of creating a united corporate integration bus that allows integrating new systems into an existing information system efficiently with minimal labor costs considering limitations and specific tasks of the research field. The paper describes basic mechanisms, considers pros and cons of the approach and introduces a generalized way of it’s implementation for mining companies.

32. A software complex to manage and test a distributed database [№4 за 2017 год]
Authors: N.E. Timofееva, K.A. Polulyakh
Visitors: 10260
The paper considers a software solution to manage and test a distributed database, which also allows making the database distribution transparent to the user. The authors highlight the main theoretical aspects of distributed data storage, namely such concepts as a distributed database, a homogeneous and heterogeneous distributed database, table fragmentation, main criteria of database distribution, a client-server technology of distributed database design. The paper analyzes database test performance and reliability. It also gives database management system performance evaluation criteria that affect data processing speed and algorithmic solutions. The presented topic is relevant due to the lack of necessary tests for testing database management system performance, as well as the lack of a universal software package for distributed database design. The article describes the scheme and structure of server and client parts of the application software package. The authors have developed a software package for managing and testing a distributed database, which allows managing a homogeneous relational distributed database. The features of the application are the ability to test the database management system in all network nodes that participate in the creation of a distributed database, as well as the ability to include any other database management systems using a minimal addition of functionality to the software package.

33. Rational organization of an application software development process for decision support successful automation [№4 за 2017 год]
Authors: Tikhanychev, O.V., L.V. Makartsev, V.R. Gakhov
Visitors: 7878
Despite a long period of using software solution and development of software development tools, this process itself is still not optimized enough. This is especially important for application software development. The subject area analysis shows that a significant part of the problems related to creating high-quality software is in the organization of application programs development. Currently, there is a wide range of methodologies for software development and software implementation tools: Rational Unifield Process, Microsoft Solution Framework, Extreme Programming, Agile, Capability Maturity Model Integration. The article describes possible approaches to rational organization of the above process using specific software systems, such as Team Foundation Server based on Project Management Body of Knowledge (PMBoK). There are conclusions about the need for automated development organization solutions for organizational and technical issues of software development. At the same time, the only use of the TFS system, as any other product of project management organization, does not solve all organizational problems. The paper states that for successful implementation of such systems it is necessary to organize interaction between all participants, to train and implement all specialists into a software development process. The world practice analysis shows that implementation of the proposed measures can significantly increase the effectiveness of software life cycle development and maintenance, providing a transition from existing “artisanal” programming approaches to industrial software development.

34. Comparison of DLA and RLA porous structure modelling algorithms [№4 за 2017 год]
Authors: A.Yu. Tyrtyshnikov, I.V. Lebedev, Ivanov S.I., Menshutina N.V.
Visitors: 10353
The paper analyzes different methods of porous materials structures generation. It shows that diffusion-limited aggregation (DLA) and reaction-limited aggregation (RLA) methods are perspective for modeling and visualization of high-porosity aerogel materials. The authors have developed algorithms for calculations using DLA and modified RLA. RLA algorithm modification in comparison with DLA is in using probability of particle aggregation when colliding with a cluster. The particle is not always aggregated, but with a given probability. This allows adjusting the branching of the generated structure. Software is implemented in C# in a Microsoft Visual Studio environment. This software requires Microsoft Windows 7 and higher operating system and at least 2 GB RAM. The paper has visualization of the generated aerogel structures. After comparing two methods it is established that the DLA method requires less computational time than RLA, however it allows modeling not only the structure but also the gelation process (structure creation), allowing controlling the specific surface area of the structure and the pore size distribution in it. The paper presents calculation data and algorithms for generating various aerogel structures. It is shown that with de-creasing the aggregation probability of the generated structure, the performance of the modified RLA algorithm decreases too. The low performance is particularly noticeable on large structures. The authors make a conclusion that it is reasonable to use the DLA method for big structure generation when it is not necessary to consider pore size distribution.

35. Synergetics of information-cognitive interaction in intelligent robotic systems with remote knowledge exchange [№4 за 2017 год]
Authors: Ulyanov, S.V., A.G. Reshetnikov
Visitors: 9182
The article describes a technology of knowledge bases remote design for fuzzy controllers, which are developed using the software toolkit “Knowledge base optimizer” based on soft and quantum computing. The paper also considers the possibility of tuning and transferring a knowledge base using remote connection to a controlled object. The presented technologies allow increasing control system robustness by adding training and adapting functions to various management situations.There is a comparison of control quality in fuzzy controllers operating in various control modes. Configuring and transferring fuzzy controller knowledge bases is performed using a remote connection with a control object online via Bluetooth and WiFi. As examples, there are different models of intelligent autonomous robots. Remote transmission of knowledge bases allows designing many different built-in intelligent regulators to implement a variety of control strategies under uncertainty and risk. The implemented technology of knowledge sharing in the group of intelligent robots allows achieving the goal of control and gaining additional knowledge by creating a new information source based on the synergistic effect of combining knowledge. The article considers various options of interaction between robotic systems. There is a brief description of each system. The experimental results demonstrate the possibility of guaranteed achievement of the control goal by a group of robots using soft computing technologies when designing knowledge bases of fuzzy controllers. The developed software toolkit allows designing and configuring complex ill-defined and poorly formalized technical systems online. This feature significantly reduces the time for intelligent control system design and improves system reliability by reducing the level of influence of expert estimates on the design process.

36. Inflight spacecraft safety performance and generating information to prevent high-speed interaction [№4 за 2017 год]
Authors: S.V. Yagolnikov, A.A. Khramichev, A.N. Katulev, Palyukh B.V., I.I. Zykov
Visitors: 9100
The paper considers one of the core necessary conditions to ensure safe operation of a spacecraft (SC) in orbit. It is timely and reliable warning about dangerous near miss of a spacecraft with small-sized objects of space debris (SD). The purpose of the warning is to protect a apparatus from collisions in time. It is assumed that a SC is equipped with an opto-electronic system (OES) for detecting and measuring coordinates of the current position of objects surrounding the protected apparatus. The proposed safety indicators of SC functioning are determined by possible collisions with objects of space debris. The paper also proposes programs and structures of algorithms for generating information to warn about potential collisions. The paper describes the following programs and algorithms: hazard assessment of a SD object detected by OES; translating object coordinates from the spherical coordinate system to the inertial coordinate system with the origin at the Earth’s center by OES and their smoothing as a sample of measurements in the inertial system for subsequent construction of the object ellipse-orbit; estimating current distance between a SC and the detected SD object, in particular, algorithms determining the coordinates of the point of intersecting a SC motion ellipse plane by a SD object motion trajectory, condition testing of a spacecraft motion elliptical trajectory passing through the calculated intersection point, calculating SD object and SC arc lengths trajectories from their current position points to the established point of intersection when it belongs to the SC motion trajectory, calculating the current distance between a SD object and a SC; estimating a time moment of possible collision of a SD object and a SC.

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