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A promising direction for the development of industrial enterprises is the Industrial Internet of Things (IIoT) technologies introduction. The paper presents the features of such systems organization and assesses the reliability of the functioning of the wired IIoT system. investigation of an important reliability indicator of a reconstructed wired IIoT system was provided, the availability function (AC), were carried out, which showed that it is necessary to increase the reliability of the server and the system power cables. The paper also assesses the dependability of the IIoT wired system using the mathematical apparatus of Markov models in the event of cyberattacks on the IIoT subsystems. A research of this system’s AC showed, that cyberattacks decreases mostly the AC value of IIoT wired system.

The purpose of the article is to substantiate the method of integration of the environmental management system in the enterprise management system. In order to meet the requirements of ISO 7498-2-99, the structure of a multilevel integrated enterprise security management system has been developed. The system provides security management for physical, information, signaling and environmental spaces. An additional environmental management layer was introduced in comparison with the security management system proposed in [12]. The integration of environmental management meets the requirements of IEC 62264-1-2014. This allows us to form inter-layers connections and coordinate the operation of individual subsystems at the physical security, information (cyber) security, functional and ecological security layers. The implementation of this approach enhances enterprise security and environment security as a whole.

The materials of this research are devoted to implementation of the main aspects of the problem, in particular, the analysis of the perception by visitors group of abstract visual objects of modern art with elements of augmented reality. This aspect is associated with the need to take into account the perception of the artefact by a group of visitors with a view to its subsequent transformation in new paintings or understanding of visitors. The approach to assessing the perception of abstract paintings with elements of augmented reality is described. The application of a special clustering method within the framework of the approach is substantiated, which allows reducing the variety of estimates in the formation of the initial data for the verbal semantic differential method (MSD). Application of the approach will make it possible to implement the triad "MSD — technology of collective expert assessment — ontological engineering" will serve as a methodological basis for developing an IoT-system in the form of an intellectual agency, for automatically changing the digital visual object of modern art with augmented reality, in accordance with its reflection in the mass consciousness of the visitors.

The paper is devoted to routing an unmanned aerial vehicle (UAV) during the Zaporizhzhia nuclear power plant monitoring without returning to the depot due to the deployment of an automatic battery replacement aerial system in specified places. The monitoring includes the overflight of the 11 monitoring stations to collect radiation monitoring data from them in case of damage of wired networks between the monitoring stations and the crisis centre. The shortest possible UAV route that visits every monitoring station (route point) exactly once and returns to the UAV depot is found by solving the Travelling Salesman Problem. An algorithm for determining the places for deployment of the automatic battery replacement aerial system is presented. A flight schedule both for the UAV and the automatic battery replacement aerial system is developed. The DJI Mavic 2 Enterprise Dual quadcopter is considered as a UAV for monitoring missions. The SL-231 Scout helicopter capable to operate in an unmanned mode is considered as a platform for the automatic battery replacement system.

The article analyzes the process of functioning of physical security systems in the conditions of component failures, cyberattacks and software updates. A zonal model of physical security systems, which includes motion detection and access control subsystems, have been built. Updating the software functions of each zone, attacks on the physical component of the motion detection subsystem, and cyber attacks on the access control system have been investigated. To model software updates, a multi-fragment model, including 9 states of each fragment and program update states has been created. To study the behavior of the model while changing the input parameters, Matlab scripts have been developed. Simulation results allow to evaluate the availability function minimum value, availability function value in stationary mode, time interval for the transition of the availability function to the stationary mode.

Failure modes, effects and criticality analysis (FMECA) is a well-known risk assessment method used to diagnose potential failure modes of a product or system being designed. This method is much based on expert experience and aims to develop improvement strategies so as to reduce the risk of failures. XMECA is a generic extension of this approach that can be applied to analysis not only failures, but other aspects related to safety analysis like intrusions (IMECA) etc. Assumption modes and effect analysis refers to a suggested technique used to minimize risks involved in making assumptions done by expert during performance of XMECA. Possible assessment scenario are described.

The paper focuses on Digital Twin (DT) in Manufacturing using Artificial Intelligence (AI) and Industrial IoT. According to the concept, the manufacturing includes three main units: equipment, personnel and processes. All data from these units are inherited to manufacture model (DT) and decision support system with the use of AI. DT data technology allows finding the required knowledge that can be interpreted and used to support the process of decision-making in the management of the enterprise. AI applications open up a broad spectrum of opportunities in manufacturing to add value by optimizing processes and generating new business models. The Landscape was described by a formal model to assure the possibility to analyze the state and development of landscape in detail considering DT and other technologies. DT and IIoT implementation for the simulation of real enterprise manufacturing were considered.

the synthesis of the synchronous digital automaton with the logic of the pseudo LRU algorithm is carried out taking into the account events of hits or misses inside the associative cache memory. The synchronous digital automaton's model with the controlling logic for management substitution of data elements at the full reliability of the selected data's multitude is described. The minimizating for the switching functions that are simple completely defined and composite not completely defined are carried out. They are switched as: L = λ(B) by selecting multiple among reliable values and B+ = f(B, λ(B)) forming the values of bits for unit LRU considering the previous state. As a result the minimum discrete realization has been obtained by suggested hardware solutions substitution policy for the algorithm of pseudo LRU of internal associative cache memory.

Supervisory Control and Data Acquisition (SCADA) system is one the most significant cyber-oriented components of management circuit for any complex hierarchical infrastructure. The effectiveness and performance of the SCADA system depends on a number of relevant factors including a possibility to utilize additional cloud resources. Of particular note, the cloud services can apply in order to create concurrent redundant system for implementation of disaster recovery feature of SCADA information resources during different deliberate malicious impacts and intrusions. However, in spite of the fact that usage of the cloud services allow to enhance functionality of SCADA system, there are dependability and cybersecurity aspects for their joint utilization hat keep to remain a serious challenge for service personnel and users. In this paper, authors propose to employ analytical and stochastic modelling in order to get a numerical dependability assessment for SCADA system with realization of the cloud resourcing support considering influence of diverse negative factors. Furthermore, developers can utilize these modelling results in order to perform justification of overall functional requirements of the SCADA system.

In this paper we propose to apply structured argumentation for Assurance Case methodology to continue developing a concept of licensing for Nuclear Power Plants PostAccident Monitoring System (PAMS) based on Unmanned Aircraft Vehicles (UAVs). We obtained the structured argumentation method including the following: the new overall algorithm of the Assurance Case development; the new proposed structure of the Assurance Case graph, which is based on the typical structure of the arguments and is developed in connection with the structured text of the description of these arguments; the improved structured text templates for arguments description. The obtained method can be used as the basis of the appropriated argumentation framework supported with a set of formal operations performed with the Assurance Case graph and supported structural text. The obtained practical and theoretical results may be used for any kinds of safety and security critical systems and applications.