Навчально-науковий інститут економіки, управління, права та інформаційних технологій

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Browsing Навчально-науковий інститут економіки, управління, права та інформаційних технологій by Author "Andrashov, A."

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    Availability models and maintenance strategies for smart building automation systems considering attacks on component vulnerabilities
    (Springer Verlag, 2018) Kharchenko, V.; Ponochovnyi, Y. L.; Mustafa Qahtan Abdulmunem, A.-S.; Andrashov, A.; Поночовний, Юрій Леонідович
    The paper deals with developing and researching Markov’s models and assessing of the availability of Instrumentation and control systems which are a part of smart building automation system (BAS). It was determined that the causes of failures and unavailability of the BAS component architecture can be hardware (physical), software (design) faults, and successful attacks on vulnerabilities (interaction faults), first of all. BAS failures are related to reliability issue, attacks on vulnerabilities is related to security issue. These two reason groups are considered as elements of two disjoint sets. The paper presents the detailed analysis of the BAS architecture consisting of control (FPGA-based), communication (ZigBee) and data levels considering their faults and vulnerabilities. Besides, maintenance procedures (without, common and separate maintenance for reliability and security) are described.
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    Modelling and Safety Assessment of Programmable Platform Based Information and Control Systems Considering Hidden Physical and Design Faults
    (2019) Ponochovnyi, Y. L.; Kharchenko, V.; Andrashov, A.; Brezhniev, E.; Bulba, E.; Поночовний, Юрій Леонідович
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    Modelling and Safety Assessment of Programmable Platform Based Information and Control Systems Considering Hidden Physical and Design Faults
    (2019) Kharchenko, V.; Ponochovnyi, Y. L.; Andrashov, A.; Brezhniev, E.; Bulba, E.; Поночовний, Юрій Леонідович
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    Monte-Carlo simulation and availability assessment of the smart building automation systems considering component failures and attacks on vulnerabilities
    (Springer Verlag, 2019) Kharchenko, V.; Ponochovnyi, Y. L.; Boyarchuk, A.; Brezhnev, E.; Andrashov, A.; Поночовний, Юрій Леонідович
    The information and control system of smart building is considered as a set of subsystems including a building automation system (BAS) which has three-level structure (automation/control, communication, data base, cloud/management). BAS security and availability during its life cycle are assessed using the Markov models and Monte-Carlo simulation. Markov model is used to calculate BAS availability considering the possibility of recovery and different kinds of the faults. The Monte-Carlo simulation is applied to investigate any flow of intrusions into the BAS by analyzing system availability of a fault/vulnerability to occur during time depending on failure rate of its subsystems. The results of analytical and simulation modeling are compared to assure trustworthiness of availability assessment taking into account attacks on vulnerabilities
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    Multi-Fragmental Markov Models of Information and Control Systems Safety Considering Elimination of Hardware-Software Faults
    (2019) Ponochovnyi, Y. L.; Kharchenko, V.; Boyarchuk, A.; Andrashov, A.; Поночовний, Юрій Леонідович
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    Multi-Fragmental Markov Models of Information and Control Systems Safety Considering Elimination of Hardware-Software Faults
    (2019) Kharchenko, V.; Ponochovnyi, Y. L.; Boyarchuk, A.; Andrashov, A.; Поночовний, Юрій Леонідович
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    Multi-fragmental Markov’s Models for Safety Assessment of NPP I&C System Considering Migration of Hidden Failures
    (2019) Kharchenko, V.; Ponochovnyi, Y. L.; Boyarchuk, A.; Andrashov, A.; Rudenko, I.; Поночовний, Юрій Леонідович
    The information and control systems of Nuclear Power Plant and other safety critical systems are considered as a set of three independent hard-ware channels including online testing system. Nuclear Power Plant information and control systems design on programmable platforms Vemodel of the life cycle. Safety and availa assessed using Markov and multfragmental models. The mult-fragmental model MICS32 contains an absorbing state in case of hidden faults and allows luating risks of “hidden” unavailability. The MICS42 model “migration” of states with undetected failures into states with detected faults. These models describe the functioning of the system and the complete elimi-nation of software faults. Results of multi-fragmental modeling are compared to evaluate proof test period taking into account requirements for SIL3 level and limiting values of hidden fault probabilities. Multi-fragment models are included in the assessing method of implementation safety requirements of ICS on pro-grammable platforms. The information technology of decision support in assessing and managing the implementation of the requirements for ICS safety is also considered.