According to the “passive experiment” with the use of a modified method of the cutting Poincare surface, a comparative study was made of the long-term development of the regions of Germany. Such a comparative study of the dynamics of development made it possible to identify for Germany the presence of three formed groups of regions. It was revealed the existence of threshold values of the specific Gross Domestic Product and specific disposable income that prevent the transition of the region to successful development

The article presents the results of the research devoted to the development of a model for predicting the characteristics of the evacuation process of passengers and crew members from an airplane in emergency situations on the ground. The model is based on a system-dynamic approach. On the basis of a system analysis, the main characteristics of this process are chosen and the cause-and-effect relationships between them are identified. These characteristics and links are used to build a formalized model, which is presented as a system of differential equations. Using the developed model at various time intervals, computational experiments were carried out to determine the values of the characteristics of the process of evacuating passengers and crew members from an airplane in emergencies on the ground. The research results are supposed to be applied in information systems at some stages of the life cycle of aviation systems, for example, for making decisions in the design of advanced airplanes.

The article presents a flexible modeling system (FMS) of an NPP power unit. The principles of constructing an FMS based on selective programming and its structure are described, and the modeling and experimental data results are compared. This FMS can be considered a digital twin of an NPP power unit, which makes it possible to predict the course of the technological process and simulate the actions of operating personnel and failures of technological equipment.

The article proposes a descending functional framework for assessment and management risk of critical information infrastructures (CII), including defining the risk management scope, defining CII functions, analyzing the value chain of critical functions and interconnections, assessing the risk of critical functions, prioritizing and processing the risks of critical functions.

Consider the problems of modernization of enterprises, including several production units that produce component parts and conveyors for the assembly of manufactured products. Models and methods are suggesting for the choice of equipment for the modernization of enterprises.