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Auflistung nach Autor:in "Tkachuk, M."

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  • Konferenzbeitrag
    An approach to advanced data synchronization in complex process control systems
    (Information systems technology and its applications, 3rd international conference ISTA'2004, 2004) Kuklenko, D.; Gamzayev, R.; Goloborodko, V.; Tkachuk, M.
    Nowadays for any kind of distributed and multi-level, i.e. complex information systems it is vitally important to represent its data resources in a homogenized form. This paper presents our approach to data synchronization (DS) in complex Process Control Systems (PCS) designed with respect to our real project experience in the domain of PCS for gas-production industry in Ukraine. DS is considered as a stage of more sophisticated approach to data processing called In- telligent Data Engineering (IDE). The IDE framework and some of its modeling aspects are shortly described. The algorithm used at the DS stage for transferring process data between the levels of distributed PCS in XML-format is proposed and implemented. In order to estimate a system performance in a DS publisher node the metrical-based modeling is introduced in our approach.
  • Konferenzbeitrag
    An approach to knowledge-based data handling in complex process
    (Information systems technology and its applications, ISTA' 2005, 2005) Gamzayev, R.; Kuklenko, D.; Tkachuk, M.
    This paper presents an approach for knowledge-based data handling in complex Process Control Systems (PCS). Special attention is paid to the specific situations taking place in the technical processes, which run under control of such PCSs. To describe those specific situations we use the concept of Active Rule (AcR). The considered PCSs operate in the real-time mode. Because of this, handling a big number of active rules may cause violations of some real-time constraints. We propose an approach of Association Rules (AsR) in order to eliminate those problems. The collection of AsR is mined from the data describing the specific situations of processes. Those data are collected in PCS as a result of executing appropriate AcR. We elaborate a collection of modification patterns for simplifying the structure of existing AcR, and the general scheme for the interaction between AcR and AsR. The results presented in the paper are based on real-life projects that we performed in the domain of Web-based PCSs for Ukrainian gas-and-oil production enterprises.
  • Konferenzbeitrag
    Fuzzy-logic modeling approach for system requirements management
    (Information Systems Technology and its Applications, 5th International Conference ISTA 2006, 2006) Tkachuk, M.; Godlevsky, M.; Zemlyanoy, A.; Gamzayev, R.