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Name
Authors
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2017/2
Mathematical model of computer simulator for trunk oil pipeline dispatchers
Technical sciences

Authors: Ayrat R. KHALIULLIN is assistant lecturer of the Department of Design and Operation of Gas and Oil Pipeline Gubkin Russian State University of Oil and Gas (National Research University). He is author of 10 academic papers. The area of his professional interests includes software for gas and oil computer decision support systems, computer simulators, distributed software. Е-mail: khaliullin.a@gubkin.ru
Yuri P. STEPIN is Doctor of Engineering, Academician of Russian Academy of Natural Sciences, international engineering high school teacher, Professor of the Department of Automated Control Systems of Gubkin Russian State University of Oil and Gas (National Research University). He is author of more than 120 academic papers. His professional interests are Markov processes, multiobjective optimization, fuzzy logic, game theory, computer decision support systems, risk-management models, automated control systems design. Е-mail: stepin.y@gubkin.ru
Sergey A. SARDANASHVILI is Doctor of Engineering, associate professor, Head of Department of Design and Operation of Gas and Oil Pipeline Gubkin Russian State University of Oil and Gas (National Research University). He is author of more than 50 academic papers. His professional interests include gas and oil computer decision support systems, mathematical and methodical support for programming and computing suites and simulator complexes. Е-mail: sardanashvili.s@gubkin.ru

Abstract: The problem of mathematical modeling of computer simulator as a multicomponent realization of VPTE concept with components installed on remote computers in a network is discussed. The simulator complex is represented as a set of cooperative Markov processes with discrete states and continuous time. A random processes interaction scheme is formed, the states of processes are detailed; differential equations systems, initial conditions, normalization conditions and relations between equation solutions are made up. In addition, the article describes computer simulator operating modes, for each mode it determines evaluation of the complex functioning reliability index i.e. the availability factor. In collaboration with UML-diagrams, the mathematical functioning model of the computer simulator provides a possibility to describe its working process, to evaluate the parameters of the underlying Markov processes and to estimate the availability factor value.

Index UDK: 004.415.2; 51-74

Keywords: virtual professional training environment, computer simulator, mathematical model, Markov process, availability factor

Bibliography:
1. Fowler M. UML Distilled A Brief Guide to the Standard Object Modeling Language, 3rd Edition. Addison-Wesley Professional, 2003, 208 p.
2. Papilina T.M., Leonov D.G., Stepin Ju.P. Modelirovanie i ocenka jeffektivnosti funkcionirovanija sistemy oblachnyh vychislenij v ASDU. Avtomatizacija, telemehanizacija i svjaz’ v neftjanoj promyshlennosti, 2016, no. 7, p. 29-33 (in Russian).
3. Handzhjan A.O. Povyshenie nadezhnosti programmnogo obespechenija informacionno-izme-ritel’nyh i upravljajushhih sistem bezopasnosti jadernyh radiacionno-opasnyh ob’ektov. Dissertacija na soiskanie uchenoj stepeni kandidata tehnicheskih nauk, Moskva, 2006 (in Russian).
4. Khaliullin A.R., Shvechkov V.A., Leonov D.G. Organizacija vzaimodejstvija programmnyh komponentov mnogopol’zovatel’skih geterogennyh raspredelennyh kompleksov modelirovanija dina-micheskih processov truboprovodnyh sistem. Trudy XIV Vserossijskogo nauchnogo seminara „Matematicheskie modeli i metody analiza i optimal’nogo sinteza razvivajushhihsja truboprovodnyh i gid-ravlicheskih sistem”. Belokuriha, Altajskij kraj, 8-13 sentjabrja 2014 g. Irkutsk: ISJeM SO RAN, 2014, p. 410 (in Russian).
5. Khaliullin A.R. Arhitekturnye reshenija i opytnaja realizacija informacionnogo obmena komponentov geterogennyh raspredelennyh kompleksov modelirovanija dinamicheskih processov truboprovodnyh system. Avtomatizacija, telemehanizacija i svjaz’ v neftjanoj promyshlennosti, 2016, no. 8, p. 17-24 (in Russian).
6. Khaliullin A.R., Shvechkov V.A., Sardanashvili S.A. Arhitekturnye reshenija realizacii upravlenija komponentami raspredelennyh kompleksov podderzhki prinjatija dispetcherskih reshenij. Trudy Rossijskogo gosudarstvennogo universiteta nefti i gaza imeni I.M. Gubkina, 2015, no. 4 (281), p. 114-128 (in Russian).
7. Ventcel’ E.S. Issledovanie operacij. M.: Sov. radio, 1972, 552 p (in Russian).
8. Stepin Y.P., Trahtengerc Je.A. Komp’juternaja podderzhka upravlenija neftegazovymi tehnologicheskimi processami i proizvodstvami. Kniga 1. M.: Vektor TiS, 2007, 384 s. Kniga 2. M.: MAKS Press, 2008, 528 p (in Russian).
9. GOST 27.002-89. Nadezhnost’ v tehnike. Osnovnye ponjatija. Terminy i opredelenija. M., 1990 (in Russian).

2015/4
Architectural solutions for managing components for distributed dispatcher decision-support systems
Technical sciences

Authors: Ayrat R. KHALIULLIN is Postgraduate student of the Dept. of Applied Mathematics and Computer Modeling of Gubkin Russian State University of Oil and Gas. E-mail: a.r.khaliullin@gmail.com
Vitaliy A. SHVECHKOV graduated from Gubkin Russian State University of Oil and Gas in 2002. He is Candidate of Technical Sciences, assistant professor of the Dept. of Design and Operation of Gas and Oil Pipelines of Gubkin Russian State University of Oil and Gas. He is author of more than 20 scientific papers. E-mail: shvechkov.v@gubkin.ru
Sergey A. SARDANASHVILI graduated from Moscow Institute of Petrochemical and Gas Industry in 1976. He is Doctor of Technical Sciences, associate professor, Head of Dept. of Design and Operation of Gas and Oil Pipelines of Gubkin Russian State University of Oil and Gas. He is specialist in the field of computer dispatcher decision-support systems for oil and gas industry and author of more than 50 scientific papers. E-mail: Sardanashvili.S@gubkin.ru

Abstract: The article deals with the problem of components managing for distributed decision-support systems; a distributed computer simulator for oil transportation systems is given as an example. The client-server interaction of components is considered. The basic functional tasks of components manager are formulated. The software architecture for the scheduling of client components is developed. Organization of computational tasks solving process is reduced to a step-by-step management of client components interaction

Index UDK: УДК 004; 681.518

Keywords: pipeline systems, programming and computing suites, computer simulators, distributed multiuser software, client-server interaction, event-based systems, service-oriented architecture, scheduling of components, organization of computational tasks solving process

Bibliography:
1. Tanenbaum E., Steen M. Raspredelennye sistemy. Printsipy i paradigmy. SРb.: Piter, 2003, 877 p. (in Russian).
2. Khaliullin A.R., Shvechkov V.A., Leonov D.G. Organizatsiya vzaimodeystviya programmnykh komponentov mnogopol’zovatel’skikh geterogennykh raspredelennykh kompleksov modelirovaniya dinamicheskikh protsessov truboprovodnykh sistem. Trudy XIV Vserossiyskogo nauchnogo seminara „Matematicheskie modeli i metody analiza i optimal’nogo sinteza razvivayushchikhsya truboprovodnykh i gidravlicheskikh system”. Belokurikha, Altayskiy kray, 8-13 sentyabrya 2014 g. Irkutsk: ISEM SO RAN, 2014, 410 p. (in Russian).
3. GOST 34.003–90. Informatsionnaya tekhnologiya. Kompleks standartov na avtomatizirovannye sistemy. Avtomatizirovannye sistemy. Terminy i opredeleniya (in Russian).
4. Meier J.D. Rukovodstvo Microsoft po proektirovaniyu arkhitektury prilozheniy. Patterns & practices/Hill D., Homer A., Taylor J., Bansode P, Wall L., Rob Boucher Jr., Bogawat A. 2-e izd. [Electronic resource] — URL: http://download.microsoft.com/documents/rus/msdn/ry_prilozheniy_ polnaya_kniga.pdf (date accessed 20.07.2015) (in Russian).
5. Leonenkov A.V. Samouchitel’ UML 2. SPb.: BKhV-Peterburg, 2007, 576 p. (in Russian).
6. Trakhtenbrot B.A., Barzdin’ Ya.M. Konechnye avtomaty. Povedenie i sintez. M.: Nauka, 1970, 400 p. (in Russian).
7. The State Machine Framework. Qt Documentation [Electronic resource] — URL: http://doc.qt.io/qt-4.8/statemachine-api.html (date accessed 13.05.2015).