The article analyzes the functions of the Border Guard Service of Ukraine and its information systems. It is determined that the modernization of the components of the integrated information system causes a violation of the existing system of cyber defense. The analysis of existing approaches to ensuring the protection of information in information systems has shown a sufficiently deep study of research separately for each information system. However, unexperienced features of the interaction of these systems remain, in particular, with the modernization of certain information systems in terms of providing cyber defense in general. The process of modernization of information systems is carried out according to individual components of the system or complex and requires their coordination in the process of joint operation. The article gives the justification of modernization strategies according to the groups of criteria: the level of cyber security, the peculiarities of the functioning of information systems. It is noted that the value of the probability of violating the properties of the information resource varies over the entire period of modernization. Therefore, to choose the strategy of modernization at the value of probability at any time is not correct. It is necessary to take into account the general tendency of the function of changing this probability. The most expedient is the distribution of this group of criteria into three components of the criteria for the level of cyber security: the normative - the criterion in which the current value of the probability of violating cybersecurity does not exceed the given; average - the criterion for which the average probability of a violation of cybersecurity does not exceed the prescribed; weighted - a criterion for which the average weighted probability of cybersecurity violation will not exceed the given. The article presents functional dependencies for determining the probability of cyber security violations for each of the groups. As a result of the study, it was determined that the priority indicator of the effectiveness of the process of modernizing the information systems of the border agency is the maximum value of the probability of violating the properties of information in the process of modernization
Modeling a system means developing a mathematical representation to simulate certain properties observed in real systems. These systems can range from a car suspension to the most complex robotics. In modern mechanical engineering, it is routine to model a physical dynamic system as a set of differential equations that will later be simulated using a computer. This systems can range from a car suspension to the most complex robotics. Use software for numerical analysis and qualitative analysis of dynamic systems in engineering and applied science education simplifies the analysis and analysis. In this paper, the dynamic behavior of massspring-damper system has been studied by mathematical equations in free software Scilab. Scilab is free and open source software for numerical computation providing a powerful computing environment for engineering and scientific applications. The resulting equations represent a generalization of the classical mass-spring-damper model; the proposed representation can be used to describe a wide variety of systems, which had not been addressed due to the limitations of the classical calculus. Software implementation of the model and calculations are performed in the Scilab environment. The massive use of software generated a great business. Although the reliability and effectiveness of commercial software is undeniable, their cost is not available to most researchers, students, and public universities. This paper clearly shows that Scilab is capable of handling such uncertainties with little effort. It should be noted that this paper is written with the intention of disseminate the ideas of how to use Scilab for teaching theory modelling, dynamic of machine or performing related research works.
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