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  • Domain modeling to support the operation of technical systems

    The article discusses an integrated approach based on the use of expert knowledge to develop a conceptual domain model in terms of monitoring the required operational reliability of technical systems. The need to formalize the key task of logistics analysis is necessary to provide support for the operation of equipment and the creation of an integrated logistics system.

    Keywords: integrated logistic support, life cycle, functional failure, operational reliability, severity of consequences

  • Identification of the alpha rhythms in the signals of the human brain electrical activity

    Methods of identification of alpha rhythms of the brain are considered. The identification process is rather laborious due to the strong noisiness of the electroencephalograms and their variability. In the article it is proposed to use the ""Caterpillar"" method or the method of singular-spectral analysis, which allows for a more qualitative analysis of different time series, in comparison with the widespread traditional methods.

    Keywords: brain waves, alpha rhythm, variability, singular spectrum analysis, electroencephalogram

  • The preventive maintenance scheduling optimization as part of the JSC "Lebedinsky GOK" information planning system.

    The technique for automation the process of maintenance schedules formation, optimize and adjust and equipment of manufacturing business units repair to reduce their carrying costs is proposed. The information flow of "maintenance planning" LGOK diagram in DFD notation is presented. The uniform loading of equipment and personnel as optimization of maintenance schedules criterion are selected. The algorithm implementation is based on the analysis, lexicographic and successive concessions methods using. to The ranking criteria are assigned and arranged according for repair work ranking to their importance. Designed algorhythm can be used as a basis for decision-making support system for the main experts of the enterprise with its subsequent integration into the existing information system "maintenance planning."

    Keywords: maintenance and repair information system, inventory items, database, scheduling, optimization, scheduled preventive maintenance