Modelling-based Methods for Information and Computer Systems 
Yurii I. Khlaponin, Volodimir O. Khoroshko, Yuliia E. Khokhlacheva, Evgen V. Gavrilko
Journal of Information Security  Research, Vol. 15, No. 3, 2024.
DOI: https://doi.org/10.6025/jisr/2024/15/3/112-120
Link: https://www.dline.info/jisr/fulltext/v15n3/jisrv15n3_3.pdf
Abstract:
Recent years have seen a significant increase in the application of modeling-based methods and experimental techniques in the analysis of ICS systems. However, a common limitation of these approaches is the systematic examination of certain processes and events within the system at different stages of operation, using a logical framework. This often leads to various assumptions that are not necessarily logical to the ICS itself but rather a consequence of the specific mathematical tools used. Itâ€™s clear that a new strategy is urgently needed to overcome this limitation. This new strategy might involve operational analysis of computer performance, primarily relying on the application of ICS models that incorporate queues and requiring the analyst to understand the underlying principles of ICS operation at a logical level. This approach enables the evaluation of the systemâ€™s overall performance, which is influenced by numerous parameters, and these values are roughly estimated from measurements without the need for ICS equipment. Based on these estimates, the fundamental indicators of the ICS are determined, leading to decisions on how to organize the Control Program. The distinguishing feature of this method (known as the engineering approach) is its focus from an engineerâ€™s perspective on the structure of the ICS, the processes and events it undergoes, especially when itâ€™s necessary to break down the system; to highlight its complex structure, including the main frameworks and directions the IS is distributed, the sets of ISs and parameters that define these streams, the relationships between threads and their parameters, and the development of requirements for measuring these parameters.