Applied photogrammetry systems, which act as measuring instruments, are often influenced by the external environment and operating conditions, which determine the accuracy of the results. In this regard, the problem of dynamic adjustment of algorithms for these changing conditions arises. To avoid an increase in the likelihood of human error and to reduce the requirements for personnel qualifications, you can resort to the tools of intelligent systems. For these purposes, the development of appropriate components is required, including machine learning tools. This article proposes a method and procedure for machine learning of the photogrammetric algorithm based on the observation of operator actions and a system of production rules.

Keywords: inductive learning, machine learning, photogrammetry, pattern recognition, photogrammetry, forestry, pipe industry, measurement, mobile app, automation

The paper presents a solution to the problem of development a vector control system for an induction motor as part of an electric vehicle power plant, which ensures the maximum efficiency of the motor in various driving modes. A nonlinear mathematical model of an induction motor is used, in a coordinate system rotating synchronously with the magnetic field and oriented along the flux linkage vector of the rotor winding. The principles and methods of synergetic control theory are used to design a vector controller. The regulator provides the set speed of the electric vehicle and minimizes energy losses in changing driving conditions. The theoretical results are confirmed by computer simulation of the power plant of an electric vehicle, consisting of a storage battery, an autonomous voltage inverter, an induction motor and a car body. To simulate the power plant of an electric vehicle with the proposed control algorithms, the Simulink environment was used. The mode of execution of the speed reference of an electric vehicle was simulated in accordance with NEDC. Based on the analysis of the battery condition during the simulation of the electric vehicle's mileage, it can be concluded that the use of an energy-saving regulator is about 40% lower compared to traditional FOC systems.

Keywords: electrovehicle, induction motor, AKAR, IFOC, simulink

The decentralized electric power supply zone occupies about 60-70% of the territory of the Russian Federation. Electric power supply here is carried out using electric generator sets with diesel drive engines. In combination with the difficult logistics of fuel and lubricants materials delivery, this leads to a high prime cost of electricity energy generated. In the capacity of a measures to the costs of electricity reduction, renewable energy sources are used, while maintaining diesel generation as a guaranteed supplier of electricity. Renewable energy is characterized by significant stochastic fluctuations. Based on experimental data, the article shows that the daily load curves of small settlements contain a significant stochastic component, which greatly exceeds the seasonal, daily, and technological components in amplitude. The purpose of this work is to substantiate the structure and parameters of a hybrid energy storage device (HESD) for the synthesis of electrical power generation complexes using renewable energy sources. Spectral analysis using the window Fourier transform is used as a tool. It is established that the energy approach to the choosing of HESD components requires N types of electric energy storage devices, which differ in the ratio: the permissible frequency of the charge-discharge cycle to the cost of the component. As a criterion for choosing the structure and parameter values of a hybrid energy storage device, an estimate is proposed for the levelized cost of electricity (LCOE).

Keywords: hybrid energy storage, electrotechnical complex, renewable energy, daily load curve, spectral analysis, Fourier series

In this article, we consider the problem of modeling the dynamics of cryptocurrencies using a wide class of tempered stable Levy processes. At the first step, the generalized Blumenthal-Getour index is estimated based on the realized power-law variation of a number of logarithmic returns of cryptocurrency rates. We consider the case when the jump activity index is less than one, which corresponds to Levy processes of bounded variation. The modeled process is then presented as a sequence of positive and negative Levy jumps over short periods of time. We calibrate the model to one-touch artificial digital options, which are the statistical probabilities of crossing predetermined barriers, and we suggest using the FFT in conjunction with the Wiener-Hopf method. The main advantage of our approach is the use of explicit Wiener-Hopf factorization formulas to determine the price of one-touch synthetic digital options within such models. The proposed technique simplifies the fitting of parameters of non-Gaussian Levy processes with jump activity not exceeding 1. In essence, we replace the original continuous-time process with a discrete process that approximates a tempered stable Levy process.

Keywords: mathematical modeling, cryptocurrencies, Levy models, Tempered Stable Levy models, CGMY modes, Blumenthal-Getoor index, options

The article discusses the concept of a system for automatic identification and traceability of pipe production at the stage of hot rolling. The main stages of pipe production are presented. A table of selection of technological parameters has been compiled. The structure of the database for the system of automatic identification and traceability of pipe products has been developed.

Keywords: raceability, automatic identification, pipe production, hot rolled products, quality management system

The article demonstrates the problem of controlling an asynchronous motor of an electric vehicle in the acceleration mode and maintaining the speed of the vehicle at the desired value with dynamically changing torque. To solve the problem, the dynamics of the movement of an electric vehicle was described, a vector control system with direct torque control with switching the inverter keys was described, which provides a rapid change in the electromagnetic moment practically without changing the speed of rotation of the motor rotor. On the basis of the given model, the system was synthesized in the Matlab / Simulink package, and the simulation results were obtained. The synthesized control strategies ensure the achievement of the set task of accelerating and stabilizing the speed of an electric vehicle, taking into account the passport characteristics of an electric vehicle, and the stability of a closed system.

Keywords: electric vehicle, control systems, vehicle dynamics, vector control, direct torque control

The most popular methods of reliability control are considered. In this work, attention is paid to an analytical review of methods for assessing the reliability of measured parameters, their advantages and disadvantages. In the process of analyzing statistical information, the types of inaccuracies that arise and the reasons for their appearance have been established. Methods of dealing with unreliability are given using: the method of level processing, a method for assessing the rate of change of a signal, digital filtering. The solution of the problem of detecting implicit unreliability using the support vector machine is shown.

Keywords: measurement uncertainty, implicit uncertainty, time series, sensor, APCS, level processing, Kalman filter, support vector machine

This article discusses a hardware and software complex for the study of aerodynamics and electromechanical characteristics of wind turbines (WPP) with a vertical axis of rotation. The created laboratory stand makes it possible to carry out experimental studies of the developed wind power plants, to obtain the dependences of the angular speed of rotation of the rotor and the consumed electric power on the wind speed. To demonstrate the efficiency of the considered vortex-type wind turbine, the corresponding prototypes of wind turbines with a power of 0.2 kW and 1.2 kW were designed and assembled, and their full-scale tests were carried out. The developed software makes it possible to carry out numerical simulation of the motion of a wind turbine with an unsteady undisturbed wind flow, taking into account the mass-inertial characteristics of the installation and the nature of the moment of resistance to the rotation of its rotor. Experimental and numerical results obtained using the developed hardware-software complex are presented and compared. These results indicate the possibility of using such a complex as an effective tool for the development of wind turbines with a vertical axis of rotation.

Keywords: wind power plant, experimental research, software and hardware complex, numerical modeling, numerical methods of dynamics of continuous media

In this paper, we consider a modification of the algorithm and software implementation of the prototype of a discrete-rotary slicer for preparing 3D printing on multi-axis printers, which allows you to prepare printing for a larger number of types of product models compared to the original algorithm and software prototype. An approach is proposed that provides for the choice of one of several secant planes at certain steps of constructing a layer-by-layer model. The software prototype was refactored. The results of the prototype work are presented, showing the efficiency of the proposed approach. Original protoptype is more constrained with the model types it can process compared to proposed one. Though further investigation of the proposed approach have to be done as well as introduction of parallel implementation of different sectant planes processing.

Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

The article discusses the characteristics of the glacial zone and the zone of formation of river flow in Tajikistan due to climate change. A special role in the context of climate change is assigned to the development of a conceptual model of optimal management to ensure water and energy security of the Republic of Tajikistan at the organizational level, technical and economic levels. The aim of creating a conceptual model is to manage large reservoirs with multi-year regulation for power generation and river flow, create conditions for the accumulation of water during high water periods and increase the water content of rivers during low water periods. The implementation in practice of the idea of a conceptual management model ensures optimal control of the water-energy system. The advantage of the model is the transition from the command-administrative method of management to the systemic method of management in the aisles of hydrographic, energy and consumer parameters.

Keywords: atmospheric precipitation, river runoff, melting of glaciers, climatic conditions, reservoirs, hydropower resources, long-term regulation, management, conceptual model, optimization

This article discusses modeling of polymer corrosion in aggressive environments based on percolation theory. Within the framework of the work, an algorithm for modeling polymer corrosion was developed, and a program that implements this algorithm in C ++. Paper describes the corrosion modeling algorithm, the structure of the implemented program, and the simulation results for various parameters. The result of this work is an algorithm modeling and an application that performs modeling of the polymer corrosion process in aggressive environments based on the percolation theory according to the developed algorithm, as well as building an image of the damaged material, graphs of the dependence of the length of the boundary of the corrosion region and the area of the remaining material on the modeling step. Algorithm uses Monte-Carlo method for determing area of corrosing region and is suitable for parallel implementation.

Keywords: percolation theory, corrosion modeling, simulation of physical processes, Monte Carlo method, visualization of simulation results

A mathematical model of the surface of deformation zones as a set of flat cross-section described on the basis of spline functions for profiling pipes in rollers with subsequent calibration is proposed.

Keywords: Mathematical model, deformation zone surface, flat cross-section, spline functions, рipe profiling

The problem of digitalization of the data accounting system and the problem of managing the technical condition of equipment at thermal power plants are considered. The performance of the entire thermal power plant depends on the operation of the boiler units. If the equipment fails and the necessary measures to resolve the emergency are not taken in time, then the probability of a decrease in the plant's performance up to the suspension of work increases. Thus, the issue of monitoring the technical condition of all operating equipment is relevant. The developed software for automation of the data recording system and visualization of technical parameters of the reliability of boiler and turbine equipment is described. The software has a methodology for determining the technical condition index of equipment. The software was developed using the JavaScript programming language, the React.js library. Digital technologies have been introduced into the process of recording data on the technical condition of equipment, where for the first time the software includes a method for automatic calculation of the technical condition index of boiler units. The software ensures that equipment downtime is reduced, as well as the likelihood of failure or critical breakdown of boilers. Thus, the operation of the software makes it possible to reduce the likelihood of an emergency state of the main equipment of power plants.

Keywords: thermal power plant, boiler and turbine equipment, software, technical condition, reliability, repairn

The article discusses the features of the proposed methodology for developing practical tasks for automated control of knowledge and skills in training IT specialists. The methodology is presented using the example of tasks for controlling knowledge and initial skills in the field of software testing and describing the functional requirements for software. The application of the methodology contributes to the development of e-learning tools and distance learning technologies in training IT specialists (in particular, university students in relevant areas). The research is supported by a stipend of the President of the Russian Federation to young scientists and post-graduate students (No. SP-100.2018.5), which was assigned by the grants Council of the President of the Russian Federation.

Keywords: IT specialist, professional knowledge and skills, knowledge and skills control, automated training systems, software testing

The paper is devoted to the analysis of methods of adoption of satellite observation data in order to identify the required information used in the development and verification of mathematical models of hydrodynamics and biological kinetics of shallow water reservoirs. For the information accumulation, we consider the use of remote sensing data. The aim of the paper is to identify the best implementation method for software tools in order to improve the quality of assimilation of date of satellite sensing of the Earth relating to hydrobiological processes in a shallow water reservoir. The results of the work indicate the clarity and relevance of the use of high-tech methods for filtering ERS images. The modern methods of accentuation of contours of objects based on discontinuities in the brightness of a halftone image, used in real time or time close to it, have been considered, and their algorithms have been briefly described.

Keywords: mathematical modeling, shallow water reservoir, satellite sensing data, filtering methods, Kirsch, Sobel, LoG, LBP, operator, recognition, contour

The problem of increasing the coding and decoding speed of Reed-Solomon codes (RS-codes) is considered. The implementation of the Open JPEG encoding system library was chosen as a base implementation for comparison. This task is considered for an x86-64 environment. The paper proposes ways to improve performance both when using a standard set of instructions and when using vector instructions from the SSSE3 and AVX2 sets. A technique for comparing the speed of encoding / decoding RS-codes is described using the example of the developed library and the basic implementation in Open JPEG. An experimental study of the relationship between the parameters of RS-codes, the encoding / decoding rate, and the set of instructions used is carried out. It is shown that for any RS-code it is possible to significantly increase performance even on a standard set of instructions. A method is proposed for the dynamic selection of the encoding acceleration method depending on the instructions supported by the target computer and the parameters of the used RS-code.

Keywords: anti-noize coding, Reed-Solomon codes, speed, vector instructions

The article considers the process of digitalization of the higher education system based on cognitive methodology. Based on the method of cognitive maps, the structural and functional aspects of the formation of a digital university in the context of the transition to a digital economy are visualized. The basic elements that determine the process of transition to a digital university (creation of a digital educational environment, formation of digital competencies, management based on a database, ensuring information security) are presented. It is determined that in the process of transition to a digital university, changes are systemic in nature, and affect management, educational, methodological and research practices, qualification requirements for all subjects of the educational process, changes in the body of technologies, methods, approaches and tools.

Keywords: cognitive model, cognitive map, digitalization, higher education system, digital university

The work is based on the results of a pilot survey conducted among students of Grozny State Technical University at the end of 2019. The questionnaire consisted of two parts. Designed to measure the affective and cognitive components of the attitudes under consideration. The study of the emotional attitude of students to friendship is reflected in the previous work. This article is devoted to the analysis of the cognitive perception of this social phenomenon. The results of a comparative analysis of these two components of the installations are also presented. A technique known as the test tradition in sociology was used to measure cognitive attitudes toward friendships. Students evaluated this parameter based on 11 primary characteristics. Further processing was carried out on the basis of the modernized method of analyzing hierarchies. In contrast to the generally accepted technology, the hierarchical structure of priorities was not set in advance. The priorities of the next level were determined by parallel factorization of the parameters of the underlying level. It is found that 11 primary parameters are reduced to three factors of the next level, which in turn form an integral indicator of the cognitive perception of friendship. The revealed hierarchical structure reflects various aspects of such cognitive perception. The paper presents the distribution functions of the obtained factors.

Keywords: friendship, cognitive component of attitudes, test technology, method of hierarchy analysis, factorization, integral indicator of cognitive perception, distribution functions by respondents

The article analyzes the wind impact on buildings and structures, considers the parameters of regional and local winds, the influence of terrain on regional winds, and presents the ratio of wind speed to blowing height. The main aspects of determining wind loads on buildings and structures are considered. The nature of the wind load and its calculation methods are investigated. The problem of further development of the method for calculating wind impact using computer modeling is formulated.

Keywords: wind, buildings, structures, aerodynamics, hydrodynamics, CFD, region, modeling, landscape, hill, valley

In this paper, we consider ways to form topological rules for describing the spatial relationships between the objects of the power transmission system and the objects surrounding them. The spatial component is the basis of data on objects of power transmission lines (power lines). Therefore, an accurate and complete description of the topological relationships between objects involved in the electricity supply process is an urgent task. The author investigates ways to describe topological relationships in geographic information systems (GIS). The functionality of these systems can be extended with additional models, including topological correctness checks. Topological rules have been developed to correct spatial relationships and eliminate errors. The generated topological rules are based on object calculations. This is due to the intellectualization of geoinformation systems and support for decision-making in the conditions of heterogeneity and dispersion of data that energy companies work with.

Keywords: topological rule, power line, geographic information system, linear object, spatial relation

In this work, R, L, C - parameters of spiral structures with sizes l and S were determined to obtain artificial chiral substrates. This made it possible, given the parameters of the polarizability of the helical structures αij, to use these features to determine the conducting properties of metamaterials. The basic relationships have been determined (for determining the electrophysical parameters of spirals (left- and right-handed) that are included as chiral inclusions in the metamaterial. An algorithm for calculating conducting structures using the proposed equations is proposed.

Keywords: biological liquid medium, dielectric constant, complex dielectric constant, loss tangent, medium conductivity, frequency response, fluctuation, frequency range, biophysical parameter

Lignin is a natural polymer material, one of the main components of wood and is a renewable resource. The current trends concerning the methods of oxidation of hydrolysis lignins and the use of oxidation products are considered. Lignin oxidation processes are mainly aimed at obtaining macromonomers with a high content of functional groups and at obtaining low molecular weight oxidation products. A significant group of research is associated with the development of processes for the production of polyols used for the synthesis of polyurethane foams. In view of the insolubility of hydrolysis lignins in acidic media, the reactions of their modification to obtain highly reactive polymeric ingredients are expediently carried out in acids. Electrochemical oxidation in acidic environments allows for multiple use of electrolytes and is energy-consuming to young.

Keywords: renewable resource, industrial waste, hydrolysis lignin, oxidized lignin, hydroxyl groups, macromonomers, low molecular weight products, chemical oxidation, catalysis, electrochemical method, resource saving

This paper discusses the results of engineering and environmental surveys on the territory of an unauthorized landfill near the working village of Erzovka, Gorodishchensky district, Volgograd region. In the course of the work, a comprehensive study of the state of atmospheric air, soil and radiation background was carried out. In accordance with the order of the Ministry of Natural Resources and Environment of the Russian Federation dated August 4, 2017 No. 435 "On the approval of the criteria and term for categorizing objects, the accumulated damage to the environment on which is subject to liquidation as a matter of priority", the study area was categorized. The data on the mass, morphological composition and hazard class of wastes located in the study area are presented. The results of a laboratory study of environmental pollution by production and consumption wastes are presented, and the accumulated environmental harm is assessed.

Keywords: unauthorized landfill, accumulated environmental damage, production and consumption waste, pollutants, heavy metal pollution, level of negative impact

Environmental monitoring of recreational areas of settlements allows you to monitor the ecological state of natural objects and identify environmental risks. The purpose of this work was to assess the element composition of aquatic plants (submerged hornwort (Ceratophyllum demersum)) growing in the recreational zone of the settlement - Svetly Yar. Research objectives: selection of aquatic plants; drying plants in natural conditions; Evaluation of plant samples (dry air sample) by mass spectral and atomic emission methods with inductively coupled plasma according to NSAM method No. 512; comparison of the obtained results with clarke ((Kovalsky V.V., 1974; Market B., 1992); evaluation of the results and prediction of the ecological situation. Research methods. Evaluation of plant samples was carried out by mass spectral and atomic emission methods with inductively coupled plasma according to NSAM method No. 512. Research results. The chemical composition of aquatic plants was studied: submerged hornwort (Ceratophyllum demersum) growing in the lake of the recreational zone near the village. Light Yar. In aquatic plants (dry air sample), on average, an increased content of lithium (Li-88.6 g / t) was revealed - 600 times; tin (Sn-14.9 g / t) - 57 times; sodium (Na-20065 g / t) - 30 times, and others compared to clarke (Kovalsky V.V., 1974; Market B., 1992). Conclusion. The results obtained indicate the pollution of the water body and environmental risks for the living population when organizing recreation. An assumption is made about a natural source of pollution. It comes from the buried ancient magma of the paleovolcano in the steppe, which saturates the groundwater with chemical elements that feed the recreational lake. Further research and a comprehensive study of the territory of the village is required. Svetly Yar and its environs with the aim of confirming or refuting the hypothesis of the natural origin of the revealed chemical elements of hurricane values ​​in comparison with clarke.

Keywords: lithium, tin, rhenium, environmental monitoring, environmental risks, natural pollution, aquatic plants, submerged hornwort (Ceratophyllum demersum, ancient magma, super-paleovolcano, lithium-containing magma, recreational zone, brine lakes