Contacts

O. S. Valinsky, A. N. Marikin, N. P. Kalinin. Improving the energy efficiency of electric braking on high-speed DC lines [more] [back]

The article analyzes the energy efficiency of electric braking implemented by high-speed rolling stock. A comprehensive approach to the problem is applied, focused on practical significance and economic validity. The article will improve the existing methodology for estimating the energy consumption of high-speed trains, as well as clarify the assessment of the effectiveness of using regenerative braking in a single system for high-speed trains. Keywords: energy consumption, energy efficiency, energy efficiency assessment, electric braking, regenerative braking, energy recovery during regeneration, high-speed train, high-speed train

A. A. Sokornov, A. N. Konkov. Physical modeling as a verification tool for solving geomechanics problems [more] [back]

The paper verifies the mathematical model of the interface section of the stage and station tunnel of the subway by creating a physical model using the method of equivalent materials. The formation of vertical loads from rock pressure on the lining of tunnels is analyzed, taking into account the selected sequence of work. Patterns of load distribution from vertical rock pressure on the lining of the distillation tunnel at the interface with the deep-laid pylon station have been identified. Keywords: finite element method, equivalent materials method, subway, interstation tunnel, station tunnel

A. A. Privalov, D. D. Titov, A. I. Tolstikhin. Program of visualisation of results of evaluation and analysis of IP-network functioning quality under the influence of cyber-attacks [more] [back]

The purpose of the research is to develop software that can visualize the operation of an IP telephone network in the face of cyber-attacks using the mathematical model proposed in the scientific article. The program allows you to simulate various scenarios of cyber attacks and their impact on the main network indicators, analyze characteristics such as delivery time, packet loss probability and network stability. The results obtained during technological modeling can be used to increase the stability and reliability of telecommunication systems, especially those operating on the equipment of JSC Supertel. Keywords: cyberattack, IP-network, mathematical modelling, distribution functions, counting integration of network resilience, Supertel equipment