Nowadays, it is often necessary to create effective tools for collecting, analyzing and processing information related to taking into account the activities of universities. There is also a need to develop information systems that provide automation of educational process management functions, which would reduce the cost of organizing educational process management in an educational institution. One of the primary tasks of the university is the implementation of research work by students, graduate students and research workers on the basis of research organizational structures. In this regard, an additional burden is placed on the employees of a research organization, which implies the performance of routine operations, as a result of which mistakes can be made. You can avoid possible mistakes, as well as increase the efficiency of employees by creating an information system, which is described in this article.

Keywords: information system, science, university, information services

The issues of ensuring the reliable operation of bearing production on the basis of the organization of the process monitoring system (SMTP), based on the introduction of effective automated control and diagnostics of technological equipment, including processing modes and technical condition, active control of product quality in the manufacturing process, output characteristics of rings processed by the eddy current method, as well as making decisions on timely maintenance of equipment. The results of the inspection are stored in a report file generated in the eddy current device computer: information about each checked part is stored: the time of inspection, the type of part, the surface to be monitored, the number of the machine on which the part was processed. The results of eddy current control serve as the basis for monitoring the dynamic characteristics of the equipment by vibroacoustic vibrations. Based on the results of the control within the framework of the SMTP, a decision is made on the quality management of processing. The introduction of SMTP provided a significant reduction in ring defects in terms of grinding quality up to 2-3 % and increased operational reliability of bearings.

Keywords: grinding process monitoring, bearing rings, dynamic machine quality, active control, eddy current control, ring quality

This article discusses one of the parts of the development of a device for testing samples of magnetostrictive materials. A study of various designs and an analysis of the sensitivity of the measuring system are presented. The substantiation of the use of a magnetic shunt to increase the sensitivity is given, which is confirmed in field experiments.

Keywords: magnetostrictive materials, basic magnetization curve, magnetic shunt, magnetic flux

The restraining setting for customs administration at the border of the Russian Federation is the insufficient equipment and technological equipment of checkpoints. The current uniform requirements for equipment and material and technical equipment of buildings, premises and pass structures do not provide for the introduction of high new technological solutions that have appeared in recent years. Proposals are presented to improve the control system at checkpoints based on advanced technologies of Technet technologies and subtechnologies of end-to-end digital technology "Artificial Intelligence and Neurotechnologies".

Keywords: customs, automation, end-to-end digital technologies, checkpoint

The lack of information about the conditions for the implementation of transport processes does not allow building mathematical models that operate with extremely accurate input data. Therefore, methods are being developed that formalize input uncertainties for constructing mathematical models of transport processes. To describe uncertainties, along with static, stochastic and interval approaches, methods based on fuzzy sets are actively used. The generalization of the belonging of the element, presented by Zadeh, allowed blurring the boundaries of the set. The blurring of the boundaries of the sets allows one to formalize insufficiently complete, in an informational sense, judgments and facts for the purpose of the subsequent use of this information in the construction of mathematical models. To identify formal approaches to working with uncertainties, an analysis of foreign periodicals in recent years has been carried out and two well-known approaches have been identified. The first is based on the theory of fuzzy sets - the generalized concept of belonging of an element to a set, leading to blurring of the boundaries of the set. The second approach involves describing fuzziness using a hierarchy - a family of ordered crisp sets [1]. Within the framework of the first approach, the authors have identified five ways of formalization. The first includes fuzzy sets (numbers) with different n-gonal forms of the membership function. The second consists of intuitionistic fuzzy sets (numbers) with n-gonal membership functions. The third contains heterogeneous fuzzy sets of type 2. The fourth represents non-standard fuzzy sets (oscillating, Pythagorean, etc.). The fifth method is a combination of spaced fuzzy numbers, intuitionistic spaced fuzzy numbers, and the like. References are given to sources containing a description of formalization methods and their application in solving some fuzzy transport problems, possible directions of research on the considered topics are formulated.

Keywords: fuzzy transport routing problem, optimization, fuzzy methods, fuzzy numbers, fuzzy sets, heuristic algorithms, hybrid algorithms, transport processes

This article considers the assessment of the life cycle costs of investment and construction projects, taking into account the costs aimed at reducing the level of pollution into the environment. Financial calculation tools used to analyze investment decisions and calculate the cost of the life cycle of an object (LCC life cycle costs, also life cycle costs) are closely related methods of evaluating investments, including equipment, installation, construction work and various infrastructure investments necessary to maintain and develop the construction sector in the country's economy. For environmental management, this analysis allows the construction company to assess the financial benefits of alternative strategies or compare such strategies with the current state of affairs. The calculation of investments in terms of costs, cost savings and the potential to reduce the risk of environmental responsibility is the basis on which construction organizations should base their long-term strategies. The article is aimed at highlighting the issues of rational calculation of investment decisions in construction to maintain a favorable environmental situation in the territory where the construction production will be located.

Keywords: environmental safety, environmental monitoring, project management, ecology in construction, dust suppression, life cycle costs, dust collection systems, investments in construction

Club architecture of the XX century has a significant role in the history of architecture development both in Rostov-on-Don and in Russia as a whole. This is due to the presence of a number of tasks, which clubs were solved in the formation of Soviet society. The change of socio-economic formation, the nihilism connected with the oblivion of some tendencies in the Soviet architecture as something alien, exposed the problem of the study of architectural form - the clubs of 1960-1980. The study, which previously did not pay due attention. As a consequence, the formed "gap" in the architectural history of the unique form of clubs, the lack of emphasis on the need for their study and conservation can lead to an irretrievable loss of structures which have compositional and artistic value. One of such objects is a club of tourists and climbers "Planet", located in the park named after N. Ostrovsky in Rostov. N. Ostrovsky Park in Rostov-on-Don. The relevance of the study of its architecture for history and local history prompted the writing of this article. The peculiarities of the club are discussed, the analysis of urban planning and volume composition of the building is carried out, it reveals the uniqueness of the building. Determined the architectural and artistic features of the building on the basis of field research and the study of preserved historical and graphic materials. The value of the object (wall of basalt stone), as a structure reflecting the main directions of the club of tourism and mountaineering is revealed, its current state is recorded.

Keywords: Planet Club architecture, mountaineering and tourism, basalt rock, reconstruction, N. Ostrovsky Park, feature

Stochastic systems are systems in which changes are random. In which the predicted values depend on a probability distribution. An example of a stochastic system in a power system, the operation of which is affected by many random factors, their analysis and control will allow you to control the safe cycle and reliability of operation. Currently, there are methods and mathematical tools that allow us to estimate the likelihood of any phenomenon and situation with acceptable accuracy, however, they are practically not used to solve this problem on electrified railway transport. Therefore, the work summarizes the existing methods of probabilistic forecasting, and gives recommendations on their application to solve the existing problematic of the issue. Further, the paper shows a method for determining the probability of failure of a constituent structural element of any, arbitrarily complex, stochastic system, to which the contact network of electrified railways belongs. In the conclusion of the work, an elementary method-oriented software tool with the functional purpose of automating statistical methods for solving problems of primary data processing and calculating elementary statistics in the process of risk management is proposed, as well as loading and maintaining a database that is subsequently oriented to the principles of machine learning.

Keywords: electrified railways, stochastic systems, operational reliability, probability of failure, forecasting

The article discusses the main stages of identification of a control system for maintaining a given temperature, which includes an actuator, a control object and a temperature sensor. The initial data were experimental values ​​obtained under various setting influences on objects of the material world. To confirm the accuracy of the calculations and the selected methods for identifying parameters, mathematical modeling of the system in the Matlab / Simulink package is presented. At the end of the article, quantitative and qualitative assessments of the obtained mathematical models are given. The identification of the parameters of the control system for maintaining the set temperature was successful. The developed algorithm for describing material objects by mathematical models showed a low error, which indicates the applicability of this approach in real technological processes of production management.

Keywords: identification, mathematical model, control object, control system, transient response, full-scale experiment, transfer function

An urgent scientific and technical task is the development of electric energy converters with high operational and energy characteristics. The use of modern methods for the development and analysis of power electronics circuits based on the use of computer equipment allows us to successfully solve this problem. In this article, a schematic diagram of an alternating voltage regulator has been developed, in which a control system based on a microcontroller implementing an algorithm for pulse-phase regulation of the variable output voltage is used to control a power thyristor key. The control system, a power thyristor key, is synchronized with the moments of transition through zero of the supply voltage of a sinusoidal shape. The controller circuit is adapted for computer modeling in the environment of the PROTEUS software product. In the article, a block diagram is also developed and a software implementation in assembly language of the microcontroller operation algorithm is performed. As a result of computer modeling, time diagrams of voltages on the main elements of the AC voltage regulator circuit are obtained. Time diagrams explain the features of electromagnetic processes occurring in the controller circuit. The results of computer modeling, the controller circuit, the developed algorithm and the microcontroller software can be used in the development of electric energy converters for automatic control systems of electrical equipment.

Keywords: computer simulation, thyristor regulator, alternating voltage, microcontroller operation algorithm, time diagrams, transistor switch, control system, damping circuit, power thyristor, active-inductive load

the presented work is devoted to the study of the temperature state of a fuel element (fuel element) – a cylindrical solid body with an internal heat source of constant power. Using the integral method of heat balance with the introduction of an additional desired function, an approximate analytical solution of the corresponding boundary value problem of thermal conductivity is obtained. The conditions of external heat transfer at the boundary of the studied region were set according to the Newton-Richman law (a boundary condition of the third kind). When obtaining the solution, trigonometric coordinate functions were used. Their use made it possible to reduce the number of terms in the desired solution due to the a priori fulfillment of the boundary condition in the center of the fuel element. It is shown that when using only three terms in the analytical solution (the first approximation), an accuracy sufficient for engineering applications is achieved. The error of the developed method was estimated by comparing the results obtained with a numerical solution based on the finite difference method. The article presents graphs of the temperature distribution at different power values of volumetric fuel element heat sources. The developed method can be used to determine the time of the system's exit to the stationary mode, estimate the maximum fuel element temperature at various values of the dimensionless Bio and Pomerantsev numbers, and determine temperature stresses.

Keywords: internal heat sources, boundary conditions of the third kind, additional desired function, heat balance integral, heat-generating element, approximate analytical solution, numerical solution, heat conduction problem, Bio number, Pomerantsev number

The work is devoted to a review of the study of a composite material based on CFRP in the field of reinforcing reinforced concrete structures. The main work on the study of the effectiveness of carbon fiber reinforced plastic in the reinforcement of bending elements along normal and inclined sections and compressed flexible elements are considered. The main achievements and conclusions are established, as well as the disadvantages of calculation methods and amplification technology are considered. The purpose of this paper is to review the areas already studied and identify promising topics for further study of composite material.

Keywords: concrete, reinforced concrete, composite material, carbon fiber reinforced plastic, external reinforcement, deformations, compressed elements

The growth in the number of vehicles on the streets of cities leads to adverse consequences: an increase in congestion, the occurrence of road accidents. In order to take measures for the efficient use of road transport roads in order to avoid unfavorable congestion situations, it is proposed to control traffic flows using a fuzzy regulator along the length of the queue in each of the conflicting directions. The optimization principle is based on minimizing the length of the queue of traffic flows, which allows the most efficient use of the transport bed, avoiding unwanted congestion situations. On the developed model of the intersection, a system with fuzzy regulation of traffic signals is proposed. The average idle time is estimated with a fixed traffic light cycle and with a fuzzy control. With the use of a fuzzy regulator, the average queue at the intersection decreased by 11%.

Keywords: fuzzy regulator, traffic flow, intersection, traffic control system, control algorithm, vehicle intensity

The design of a mobile complex for the construction of winter roads with the selection of the main working units has been developed, an analysis of the effectiveness of the application has been carried out and the ways of further development have been considered. An assessment and a detailed analysis of existing mobile snow-melting machines was carried out, the problem of the quality of winter roads was analyzed, ways to improve the quality of temporary winter roads were considered and the most effective was identified, the principle of operation of the proposed design, advantages were described, the main parameters of equipment were calculated, the calculation and selection of working units were made, and the power balance of the mobile complex is also calculated.

Keywords: snow transfer, autowinter areas, cleared, extended, temporary, regular, humidification, technology, category, carriageway, roadside, compacted snow

The paper considers mathematical models obtained on the basis of experimental studies of electrical sheet steel. The models reflect the error in determining the main magnetization curve of electrical steel. The magnetic properties are determined in the center and at the edge of the cut of sheet samples with a size of 150 × 150 mm, made by cutting with guillotine shears and laser cutting. The choice of scale factors for calculating the main magnetization curve with an error of ± 5% according to the measured Weber-ampere characteristic has been substantiated. The study was carried out using a device for express control of the magnetic characteristics of electrical sheet steel. The main curve of magnetization of the sample material from sheet electrical steel was determined in an alternating magnetic field with a frequency of 50 Hz, along the direction of rolling. Investigated samples of isotropic sheet electrical steel grade 2212.

Keywords: mathematical model, electrical steel, magnetic properties, magnetization curve