The subject area analysis and the information system design using the methodology of the object-oriented approach and CASE-technologies is carried out. The used CASE tools made it possible to obtain a visual model in the form of UML diagrams. The IS data structure and composition is described. The IS requirements are formulated. Technical requirement has been formed. UML diagrams describing the AIS are constructed at the design stage. The database of the information system was designed in the form of ERD diagrams, using the CASE-tool ERwin Data Modeler. Automatic generation of an SQL script was performed to create all tables and relationships in the selected DBMS MySQL, including primary and foreign keys, relationships between tables, database integrity, etc. The information system user interface was designed, too.

Keywords: subject area analysis, design, modeling, information system, object-oriented approach, CASE tool, UML language, UML diagram, ERD diagram

Artificial intelligence is currently used in numerous scientific and literary sources, including documentaries. Summarizing information material, highlighting the problem of reducing the loss of time when creating new objects, leads to the need to use elements of artificial intelligence. The article discusses the advantages and disadvantages of using artificial intelligence in the design of a cantilever beam under load.

Keywords: artificial intelligence, mechanics, cantilever beam, load, optimal design, resource saving.

The topic of monitoring the state of vegetation using satellite technologies is covered in this paper. The forming of fields' NDVI images is considered. It is proposed to supplement satellite images with new images which formed on predicted values ​​of the vegetation index. It can be helpful for timely detection of heterogeneous and defective areas of vegetation cover. The paper discusses methods for forecasting the NDVI values using Volgograd region as a study area. The results of training a recurrent neural network with the LSTM mechanism, as well as the results of training the XGBoost algorithm, are obtained. Based on the results of the training, the most important weather parameters affecting NDVI were identified. The performance of the trained models was evaluated using the RMSE metric.

Keywords: precision farming, vegetation indices, NDVI, forecasting, time series, LSTM, random forest

This article describes the formation of a training set for training language neural networks for their use in tasks related to the analysis and search for matches and / or correspondences in meaning / value, and specifically with functions and methods in the source code of a programming language. The key parameters required in the sample for the correct training of the neural network are determined.

Keywords: source code, machine learning, natural language processing, neural network, data analysis

Increasing the throughput capacity of railroads is possible through the introduction of coordinate systems of interval regulation of train traffic based on satellite navigation equipment. Since the accuracy of coordinate determination by means of satellite navigation is unstable, it is proposed to use a local differential system of departmental purpose as a means to control the availability of navigation determinations GLONASS/GPS coordinate systems of interval regulation of train traffic. The method of differential pseudorange correction and the method of direct differential coordinate correction are considered. We analyzed the effectiveness of these methods in the Mathlad software package, using daily range measurements of stationary GPS stations located in Canada. The analysis showed that the method of controlling the availability of navigation determinations on the plane using direct differential coordinate correction is more stable and reliable in operation.

Keywords: satellite radio navigation, control of availability of the required navigation characteristics, accuracy of positioning in transport

As practice has shown, enterprises that receive high profits achieve this by reducing costs, rather than increasing the price of products. The national project "Labor Productivity and Employment Support" defines one of the directions for achieving high labor productivity and product competitiveness as training in lean production tools. The article discusses the applied methods of lean production on the example of an architectural and artistic casting enterprise, and also shows the main indicators for evaluating the efficiency of using production capacities.

Keywords: efficiency of equipment operation, ITS index, lean manufacturing methods, Pareto analysis

The article is devoted to the review of food production planning models, the analysis of their features. For this purpose, the classification of models was considered, which included models with deterministic and interval parameters, and also took into account the influence of natural and man-made events. The article considers a model for optimizing the functioning of an agro-industrial cluster, presents models for optimizing the production of food products in agro-industrial clusters of the Irkutsk region.

Keywords: optimization methods, agricultural production planning model, deterministic and interval parameters

The design of an information system for recording appeals received by the election commission is presented. The second stage of the life cycle for information system creation – the design stage is presented. The design was carried out through the use of modern CASE-technologies within the framework of a structural approach using the BPwin modeling tool. A model of the projected information system has been developed. It is constructed using two types of diagrams, tiedly connected each other. They are both the IDEF0 and DFD methodologies. IDEF0 diagrams contain a context diagram and decomposition ones of the first and second levels. The presented series of diagrams describe all the necessary processes sufficient for the activity modeling of the projected information system. A data flow diagrams (DFD) are constructed using the DFD methodology. It shows all data flows used during the execution of processes, including external entities outside the system and data stores inside it. If to supply the presented model with ERD diagrams, as a model of database, one can begin to program and realize an information system.

Keywords: information system, structural approach, methodology, CASE-tool, BPwin, IDEF0, the TO-BE model, decomposition, data flow diagram, data storage

The requirements for the creating information system automating the linguistic center activities are analyzed and optimized. The first and second stages of IP creation Life Cycle are presented. The analysis of the subject area and the design of the information system using the tools and methods of the object-oriented approach is carried out. Using such CASE tool, as the RationalRose, UML diagrams describing the activities of the Language Link linguistic center are constructed. By means of AnyLogic, simulation modeling was carried out and a student testing model was developed to determine the level of language proficiency in order to choose the exam category. The requirements for the projected information system of the linguistic center are formulated. Logical and physical ERD models of the database structure are constructed using the ERWin CASE tool. The design of the user interface of the information system for the linguistic center has been also carried out.

Keywords: domain analysis, design, information system, object-oriented approach, modeling, simulation model, UML language, CASE tool, UML diagram, ERD diagram

This article explores the use of machine learning algorithms to identify anomalies in a solar heating system. The developed solar heating system consists of several parts to simplify the process of description and modeling. The author propose a new neural network architecture based on ordinary differential equations. The idea is to apply the new architecture to practical problems of accident forecasting (the problem of extrapolation of time series) and classification (classification of accidents based on historical data). The developed machine learning algorithms, artificial intelligence methods, and the theory of differential equations - these areas allow us to build a model for predicting system failure. Database management theory (relational databases) - these systems allow you to establish optimal storage of large time series.

Keywords: flat solar collector, solar heating system, machine learning, algorithm

The object of the research is the method of cutting tool wear control that provides evaluation of the periodicity of cutting tool replacement on the basis of vibration signals. Noise and vibration meter VShV-003-M2 is used for registration of vibration level in the process of parts processing. A procedure of determining the index of catastrophic cutting tool wear according to the vibration index with the use of the autocorrelation function and the amplitude-frequency characteristics of the dynamic system is developed. Measurements of vibration readings of a batch of parts in wave-file format were made, by processing the readings an array of data - vibration indicators, allowing to estimate the process of the cutter wear development during the machining process was obtained. Providing control of catastrophic wear of cutting tools is necessary for timely replacement of cutting inserts.

Keywords: vibration index, catastrophic wear, tool, condition monitoring, vibration, turning machine, sensor

The article describes the architectural techniques used in the process of developing case studies for assessing the professional skills of students, implemented as part of the educational process of the RSTU. The decision to use the interface as the center of architecture is justified. Possible problems in the process of developing the interface of the specified software are described, and ways of solving them are also presented. Thanks to the presented methods of building the project architecture, you can get rid of the main drawbacks associated with the dependence of the program code of the implemented product on the user interface. Increase the scalability and reliability of the application, while maintaining the overall quality and functionality.

Keywords: interface, user interface, architectural solution, loaded interface, software, pattern, messagebroker, coroutine, pseudo-stream, case

The most important task of the theory and practice of information security is to analyze the process of functioning of the subsystem for responding to computer incidents and eliminating the consequences of computer attacks of the information protection system of automated special-purpose systems under the influence of computer attacks by an attacker on the protected information resource, service or network, which involves modeling the response process. A generalized model of the process of eliminating the consequences of computer attacks and responding to computer incidents is presented in the form of a directed graph, where the vertices correspond to the states of the subsystem, and the arcs correspond to transitions from state to state. The description of the subsystem functioning in the state space allows you to simulate the process of responding to computer incidents and eliminating the consequences of computer attacks, evaluating generalized indicators of the time spent by the subsystem in various states and promptly manage the response process by changing the controlled parameters of the model. The model takes into account many types of computer attacks and many strategies for managing information security tools in the process of eliminating the consequences of computer attacks, is the theoretical basis for the development of a methodological apparatus for analyzing, evaluating and prioritizing the processing of computer incidents, as well as the study of issues of dynamic management of the subsystem of responding to computer incidents in order to increase the efficiency of its functioning. The use of the proposed model makes it possible to apply both empirical values of the implementation time of the response and counteraction subprocesses obtained as a result of measurements or modeling, and the theoretical basis for modeling the counteraction of information security tools to computer attacks of various types.

Keywords: automated special purpose system, simulation, information security system, information security tools, computer incident, computer attack, system status

Remote control of construction equipment makes it possible to increase the efficiency of the workflow: reduce the construction time, adhere to a clear schedule, keeping up with the deadlines set and approved by the project, allows you to "see" the production process from different sides, eliminating almost all possible problems. Also, the full or partial transfer of authority to computer technologies guarantees continuous work in the presence of various climatic and social factors that slow down or stop the schedule. This article examines the experience of implementing remote control of construction equipment at oil production facilities. A comparative analysis of the automated and standard workflow is carried out on the example of KAMAZ trucks. The prospects for the introduction of remote control technology for construction equipment at fields in Russia in order to increase the efficiency of construction production are considered.

Keywords: construction machinery, automated equipment, drones, 5G, unmanned vehicle, unmanned trucks

The analysis of the frequency-controlled drive currently used on the technological equipment of the Volgogradneftemash enterprise is presented. Taking into account the peculiarities of the pumping and ventilation equipment installed at the enterprise, the principles of regulation are determined and the influence of a frequency-controlled drive on the quality of electrical energy is evaluated. The negative influence of the frequency-controlled drive of ventilation and pumping equipment on individual indicators of electricity quality was noted. In order to reduce this influence, an energy-saving device has been proposed for installation. The issues of the possibility of using an energy-saving device at the facility are considered, as well as an analysis of its efficiency during operation from the point of view of improving the quality of electricity in the internal power supply system of the Volgogradneftemash open Joint stock company is carried out. The use of the device is an effective solution, since it leads to high energy efficiency of technological equipment by reducing current surge, suppression of higher harmonics and electromechanical interference.

Keywords: electric drive, ventilation system, frequency-controlled drive, quality of electrical energy, energy saving device

The article analyzes the elements of recursion and methods of its optimization, gives a name to the elements of the structure of recursion, an analysis is carried out, a pseudocode is shown. The relevance of using a recurrent approach when conducting inspection activities in order to ensure transport security is revealed. Algorithms of actions of transport security units based on recursion are specified.

Keywords: recursion, transport security, inspection, memoization, segmentation, transport security zone

The task of building a decision-making system within the framework of automated systems of accident-free control of technological processes based on prediction models is considered. The decision-making system includes emergency forecasting system, integral criterion of accident-free control, preventive maintenance system, automated process control system. The aim of the work is to develop a compositive model for predicting emergencies of chemical water cleaning process. MATLAB software package and visual programming environment MICROSOFT VISUAL STUDIO were selected as a toolkit for predicting emergency situations of the technological process. The prediction model is a composition of thermodynamic, linguistic and neural network components. An example of compositive model for forecasting emergency situations of chemical water cleaning process is considered. Computational experimental research of the model is presented. It is concluded that the components of the prediction model complement each other, and an objective assessment of the state of the chemical water cleaning process should be carried out on the basis of the prediction of all three models.

Keywords: forecasting, emergency situation, technological process, accident-free control, decision-making system, automated system, compositive model, integral criterion, chemical water cleaning, computational experiment, real-time mode

To improve the quality of bearing rings, modern production strives to apply new modern methods for detecting defects based on the causes of their occurrence, as well as to introduce quality control systems by creating specialized software. An accurate assessment of the dynamic properties of bearings is very important for machines and helps to avoid serious mechanical damage. As part of the experiments, the main control methods were considered and the most effective one was established - eddy current control, which has a number of advantages compared to others. To prevent the occurrence of defective products in the control system, the fractal dimension method was considered and a neural network was built to solve the tasks of diagnosing.

Keywords: defect diagnosis, bearings, neural networks, automated control, fractal dimension, SVD filtering, Matlab software, monitoring system.

The article presents the results of a study of an automated system of commercial accounting of energy resources. The open architecture of the top-level software of the automated information and measurement system of commercial electricity metering, based on WEB technologies, has been developed and tested, which will allow further research and scientific activities in the field of mathematical and software processing of data on electricity consumption. A module of planning and management of enterprise resources has been developed for the implementation of AIIS KUE in the MCD based on the developed diagram of use cases.

Keywords: WEB technology, automated information and measurement system, electricity, energy consumption, automatic control

A description of the new assessment tools in the form of case tasks is given, which most fully reflect the level of mastering the professional competencies laid down in the study of the discipline. Case-meters include special problematic tasks, for the solution of which it is necessary to analyze the situation that requires updating the complex of professional knowledge. The results of this type of testing give a fairly complete picture of the professional and personal qualities of a specialist. The description of the developed special software for automatic checking of case tasks for assessing the professional skills of students in the discipline of the database is given.

Keywords: situational case, assessment tools, tests, assessment, case tasks, software application, design

In this work, an automatic control controller for a two-circuit solar installation with thermosiphon circulation based on the STM32 platform has been developed. The system operates using six sensors (temperature sensor, water flow sensor, pressure sensor, coolant temperature sensor in the heater tank, coolant temperature sensor in the heat exchanger and outdoor temperature sensor.

Keywords: flat solar collector, heat pump, two-circuit solar installation with thermosiphon circulation, automation system, SCADA, solar heat supply system, PLC, control system

This arcticle are devoted to the modernization of housing and communal system based on the technology of "Smart Grids". The methology of developing an assessment of the effectiveness of the project of the modernization of housing and communal services facilities using the technology of "Smart Grids" is given. It from the publication that the use of "Smart Grids" technology provides energy and economic efficiency in the development of the city's energy system

Keywords: Smart grids, "Smart City", centralized heat supply systems, individual heat supply, evaluation of the economic modernization project, key performance indicators

The article discusses the algorithms of the population's choice of the method and means of transportation around the city. The article presents three algorithms: the general algorithm, the algorithm for regular movements and the algorithm for urgent movements. The logic used in the developed algorithms is based on the materials of a survey of 1504 respondents in Tyumen in 2021. The algorithms take into account aspects that are associated with the risk of COVID-19 infection in urban transport. These algorithms can be used in research works to simulate the process of movement of city residents.

Keywords: algorithm, urban transport system, choice of mode of transportation, choice of means of transportation, urban transport

Internet of Things (IoT) technologies are widely used in many fields today, including the power engineering. This article describes the development of a hardware and software complex for collecting and storing thermometry data. Related works are considered. The complex includes the data collection and transmission module and the database on the server. Measurement indicators are collected and transmitted using the Arduino Uno platform. For temperature measuring, the thermocouple is used, the normalizing converter converts the signal from the thermocouple. The signal gets to the input of the ATmega328 microcontroller of Arduino Uno platform. Data transmission is carried out wirelessly by EPS-12 microcontroller using the MQTT application layer protocol and Wi-Fi channel protocol. The database was implemented using the MySQL database management system. The developed software and hardware complex is used for steam boiler condition monitoring at the thermal power plant of the Moscow Power Engineering Institute.

Keywords: measuring device, thermocouple, Arduino, Wi-Fi, MQTT, publisher, broker, subscriber, Internet of things, MySQL, database, thermal power plant

The article presents the results of a study of the stepper motor control system of a road printer. The use of a stepper motor imposes additional requirements on the road printer in terms of operating parameters control. The main requirement for the stepper motor of the road printer is to ensure the rotation of the rotor, at a given angle, which depends on the control mode. The description of the road printer is given. The dependencies of the stepper motor as a control object are given. Investigated for the stability of the Nyquist system. A simulation model of the stepper motor control system of a road printer has been developed and simulation results are presented.

Keywords: road printer, stepper motor, mathematical model, transfer function, modeling, controller