Aleksandr Volosiuk

The paper considers tasks of increasing the functional reliability of critical human-machine control systems. The authors propose the man-system approach to the critical systems reliability ensuring, which includes the concept of automation of processes modeling for the critical systems function, based on the functional networks apparatus (Prof. Gubinsky A.I. scientific school). For this, the authors develop an information technology for human-machine interaction modelling and describe its main features. The proposed technologies and techniques are intended for use in the operation design for complex human-machine systems.

The article considers the issues of preventing damage to complex critical systems, caused by cybersecurity unreliability and violations. The method of searching for ergonomic reserves is used. Within the framework of the human-system approach to the tasks of ensuring the reliability and cybersecurity of critical systems, the issues of human-machine interaction simulation by functional networks are considered. The activity of the human operator is proposed to be described in the terms of the functional-structural theory of the scientific school of professors A.I. Gubinsky and V.G. Evgrafov. The information technology was developed that ensures the implementation of procedures for describing, evaluating and variant simulation of human-machine interaction.

The paper considers ergonomic problems of IT-resource management centers. The authors propose the human-system approach to the reliability and ergonomics ensuring. The authors develop technology for optimizing performance of IT resource management centers. The technology is based on the functional networks concepts (Prof. Gubinsky A.I. scientific school) and event modeling. The method is intended for use in the operation processes of IT resource management centers.

In this paper, we investigate problems of decision making in management systems for the sustainable development of complex technological and socio-economic facilities. We show both the limitations of traditional expert systems and decision support systems, and the necessity of using expert evaluation technologies to find possible development strategies. Based on that we substantiate the need of creating a new class of systems, i.e. Automated eXpert Assessment Systems, and propose their organizational structure and design principles. We substantiate the level of automation of the work performed during the examinations and describe the composition of models and computer programs we recommend for creating effective automated expert assessment systems and corresponding technology. In the paper, we give examples of using the proposed method for various areas of human activity, in the management of urban infrastructure and e-learning at the universities, and show the effectiveness of the developed approach.

Application of the Internet-connected operational devices in the heating, ventilation and conditioning (HVAC) systems has extended the cyber-attack surface by introducing different malicious scenarios. The analysis of the HVAC data may provide insight on typical patterns of the system operations. Implementation of the thoroughly elaborated visualization models may significantly increase the efficiency of the suspicious activity identification in the HVAC systems. In the paper we present the results of the laboratory usability testing of three visualization models used to analyze HVAC data – matrix-based visualization technique, non-linear multidimensional visualization technique RadViz and timeline chart. Matrix-based visualization and RadViz visualization are often used in anomaly detection process, while timeline charts are a traditional way to present operational HVAC data. We describe the experiment design and discuss the results obtained. The usability testing revealed advantages and limitations of these visualization techniques in behavior pattern and anomaly identification tasks. The results can further serve as guidelines for task-dependent selection of a visualization technique.