bluuebunny/crossref_metadata_2025_split huggingface dataset:
Developing a robot with computer vision for automating business processes of the industrial complex
Authors: Gavrilovskaya N V , Kuvaldin V P , Zlobina I S , Lomakin D E , Suchkova E E 
Published: May 2021

Abstract
Robotic Process Automation technology is one of the solutions implemented in mechanical engineering and industrial production. A business process is automated by observing how a person is doing a task in a graphical user interface. Then the cyberphysical device repeats the same task. A significant problem of the implementation of such automated systems is that if the work is to be carried out through the interface of a virtual desktop, then it is impossible to obtain data on the elements of the graphical interface without computer vision. The object of the research is the automation of business processes of the industrial complex using computer vision. The purpose of the study is to apply computer vision methods to automate business processes and develop an appropriate software robot. The paper analyzes computer vision methods for recognizing user interface elements and text within these elements. Moreover, the authors have developed and tested a cross-platform application that reproduces a business process using computer vision. The test results have shown that selected computer vision methods will help automate industrial production business processes on any platform with a virtual desktop interface.
Study of analytical solution of the thermal conductivity equation considering relaxation phenomena under the third class boundary conditions
Authors: Zhukov V V 
Published: May 2021

Abstract
Applying the variable separation method, an exact analytical solution is found for thermal conductivity equation, established based on the modified Fourier’s law with thermal flux relaxation and temperature gradient under Newton’s boundary conditions (BC). An alternative method is proposed for modeling the transient heat conduction in the plate washed at the boundaries by a liquid or gas, which differs from the traditional one in the absence of the need to determine the heat transfer coefficients from the criterial heat transfer equations, instead of which it is proposed to introduce summands into the classical heat conductivity equation. The summands should take into account the relaxation nature of solids, the features of heat transfer at the boundary, acceleration of heat flux and temperature gradient during the process.
Automatic adaptation of a Solar Plant Intelligent Control System
Authors: Engel E A , Engel N E 
Published: May 2021

Abstract
The article continues the authors’ scientific research in the field of solar plant intelligent control system. This paper presents a developed on-line and off-line automatic adaptation methods which allow solar plant intelligent control system to adapt to rapid dynamic of insolation in real time and to seasonal insolation fluctuations during night time. The experimental results show that the proposed solar plant intelligent self-adaptive control system produced robust and rapid maximum power point tracking, as compared to a classical solar plant MPPT system based on Perturb & Observe or particle swarm optimization under seasonal fluctuations or rapid dynamic of insolation.
Online training of students of applied physics in the field of circuitry
Authors: Luchaninov D , Bazhenov R , Sabirova V , Mamyrova M , Zholdosheva A 
Published: May 2021

Abstract
The aim of the study is to test the effectiveness of online teaching of students of applied physics (directions “Electric power and electrical engineering”, “Physics”) to the basics of circuitry and robotics. For the practical development of the principles of circuitry, the TinkerCAD Circuits modeling system is used, lectures and consulting events are implemented using Skype online communication and YouTube broadcasts. The training is based on the principles of gradual complication of tasks and training in invention. The study was conducted at Sholom-Aleichem Priamursky State University and Osh State University in the 2020-2021 academic year. Two groups were selected for the study, the control group (60 students) studied the basics of circuitry using the prepared tasks, the experimental group (72 students) used the TinkerCAD modeling system for training. The results of the study showed the effectiveness of the methodology used for the assimilation of knowledge and skills: an increase in the control group was 13 percent, while in the experimental group an increase of 42 percent was noted. During the research, an increase in the interest of students in the performance of work, attempts to self-improve working devices was noted. Further improvement of the methodology may be associated with the technical design of remote laboratories for circuitry and robotics.
Statistical series for the ordered array approximation of random variable
Authors: Polosin V G 
Published: May 2021

Abstract
Many papers contain the study of observation results by using statistical moments and signs of the shape of distributions of random variables. Most of the directions of the application of moments are based on the relationship of moments with the parameters of the shape and scale of distributions. Expansion of the boundaries for the distribution parameters area is possible by identifying new qualitative properties of these characteristics. For this reason, it is relevant to study the possibility of using the central moments of the n-th order when constructing a statistical series. The paper demonstrates the possibility of using distribution moments to construct a series of approximations of a sorted data sequence. In particular, a method is developed for the expansion of a monotone varying function in a power series, that it is based on obtaining the coefficients of the series by using the central moments of the n-th order which calculated from a random sample of data. There are also examples of sorted series approximation for typical known symmetric and asymmetric distributions. There are also examples of sorted series approximation for typical known symmetric and asymmetric distributions. The article illustrates the use of a statistical series for the study of arrays of random variables by the example of approximating a sorted sequence of one cycle of an electrocardiosignal.
Contemporary heterostructures for solar cells improvement
Authors: Lebedev A , Naumova A , Zhalnin B , Vagapova N , Slyschenko E , Sharov S , Obrucheva E , Didenko S , Izotov A 
Published: May 2021

Abstract
Current investigation is focused on InxGa1-xP and InxAl1-xP epitaxial layers growth. Multicomponent nanoheterostructures are the main materials for a contemporary triple-cascade solar cell, and for perspective photovoltaic devices. The optimal InxGa1-xP and InxAl1-xP growth process characteristics are determined. InxGa1-xP epitaxial layers (with In & Ga varied on Ge), and InxAl1-xP layers (with Al & In varied on Ge and GaAs) are investigated. During investigation X-ray diffractometry was used. Based on results of X-ray diffractometry the lattice parameter and In / Ga / Al ratio in the structure were detected. Solid phase versus the gas phase composition correlation was found based on the lattice parameters. It is determined that diffraction X-ray peaks broadening can be used as a parameter for the heterostructure perfection analyze. For the InxGa1-xP solid solution (X = 45–53 %) and for InxAl1-xP solid solution (X = 46-51 %) a high quality of the single-crystal structure and a slight diffraction X-ray peaks broadening are detected.
Simulation of laser cladding of a wear-resistant coating hardened with Al2O3 particles
Authors: Alisin V V , Roshchin M N 
Published: May 2021

Abstract
The article is concerned with the matters of formation of heat fluxes during laser fusion of coating of the NiCrBSi system hardened with the addition of aluminum oxide fine powder. It is based on the simulation of the process of heating and melting of the CW coating with a laser and the specified thermophysical properties of the base material, coating and hardening additive of aluminum oxide powder. The numerical solution of the differential equations system is obtained and the temperature distribution in the coating over the thickness is determined depending on the power and time of action of the heat source. The obtained diagrams are analyzed, on the basis of which it is proposed to choose the parameters of laser processing. The prospects of applying a coating using the laser cladding technology to protect against wear of steel friction surfaces and restore hardened steel parts of friction assemblies are shown.
On the task of designing an object of cyber-physical quality control system for asphalt mixtures compaction
Authors: Prokopev A P , Nabizhanov Zh I , Emelyanov R T , Sabinin V L 
Published: May 2021

Abstract
The results of formulation of computer model of highly-efficient constant nondestructive testing of quality compaction by state method have been considered. Computer model has regard to structural components of work tool and sealing material. The model of the sealing material is represented by a visco-elastic Kelvin-Voigt body. Result parameters are meant to analyse process dynamics, determine compaction quality continually, automate operation and control. A simulation model of the considered process was obtained in the language of the MATLAB/Simulink. Results of simulation of numerical example were provided.
Model of object non-destructive technology of road surfaces compaction control
Authors: Prokopev A P , Nabizhanov Zh I , Emelyanov R T , Ivanchura V I 
Published: May 2021

Abstract
The results of research on the development of a mathematical model of the object of non-destructive technology for continuous monitoring of compaction of road construction materials are considered. The dynamic model is based on the process of compacting the material with a double drum vibratory road roller, as an element of a cyberphysical road construction system. The main stages of constructing a mathematical model using the state variables method are presented. The state variables are vertical displacement and velocity of the rollers, vertical displacement, velocity and angular displacement of the roller frame. The results of developing a simulation model of a dynamic system implemented in the language of the Simulink program based on a model-oriented approach are presented. Output signals of the dynamic model – displacement, velocity, speeding-up, contact force of the roller drums. A mathematical model of a viscoelastic body is used to describe the dynamics of the compacted material. The results of modelling a numerical example of the dynamical system under study are considered.
Analysis of the features of image processing using the Hamming network on the STM-32 microcontroller
Authors: Chepkov A O , Klimachev V S , Korchagin A I , Vlasov A I 
Published: May 2021

Abstract
The paper discusses the features of solving a class of problems for pattern recognition using the STM-32 microcontroller. The problem of pattern recognition can be solved on neural networks of different architectures, the main attention is paid to the Hamming neural network model. The features of the implementation of the Hamming network based on the STM-32 microcontroller for the recognition of images entered via the touch screen are analyzed. It is experimentally shown that the network cannot always correctly process the input value and compare it with the reference value of the class for digital test images. This is due to the high degree of similarity of some images and the presence of noise. In conclusion, recommendations on the implementation of neural network algorithms for image processing on microcontrollers are given.
Prevention of salt deposition in circulating water by the combined use of a salt deposition inhibitor and magnetohydrodynamic treatment
Authors: Laptev A B , Golubev A V , Kireev D M , Kozlov I A , Slavin A V 
Published: May 2021

AbstractThe article considers the possibility of using magnetohydrodynamic water treatment together with high-molecular polycarboxylates. The principle of calculating MHDT devices for increasing the efficiency of a polycarboxylate-based reagent is proposed. It is shown that the method of increasing the efficiency of a polycarboxylate-based salt deposition inhibitor in cooling water systems simultaneously with the use of magnetohydrodynamic treatment of circulating water allows reducing the reagent consumption, avoiding the use of nitrates and phosphates, and reducing technological costs. The effectiveness of the combined use of a polycarboxylate-based salt deposition inhibitor with the MHDT device has been confirmed by tests on the cooling water system equipment of an industrial enterprise. When testing the reduction of salt deposits with a polycarboxylate-based salt deposition inhibitor and MHDT, the inhibitor dosage was reduced from 5 to 1 ppm. Monitoring the efficiency of the heat exchanger (by temperature difference) showed that there were no deposits on the plates for three months. The number of heat exchanger repairs has been reduced by more than three times.
Separation process control system in the cement production facility
Authors: Muravyova E A , Gabitov R F , Sabanov P A 
Published: May 2021

Abstract
The article developed a system for controlling the process of cement separation using neural networks. The control object is a separator. The task is to improve the cement production process control system by installing a frequency converter and an electric air damper. In order for the current frequency and the degree of opening of the damper to be set automatically, a neural network was developed for the separation process, which has two input and two output parameters. The neural network is able to adjust the rotor speed of the separator, relying on sensors that control the speed of the separator rotor and the size of the cement particles. If the speed of rotation of the rotor of the separator becomes low, artificial intelligence will adjust the fineness of grinding, changing the degree of opening of the damper for air supply to the separator. If the speed of rotation of the separator rotor approaches the maximum, and the grinding fineness has not reached the specified values, then the grinding fineness is controlled by changing the degree of opening of the damper for air supply to the separator.
The influence of a TM wave on liquid flow in a capillary
Authors: Kharlanova T S , Kharlanov A V 
Published: May 2021

Abstract
Electromagnetic wave propagation along capillary with flowing liquid is considered. It is shown that there are frequencies at which the electromagnetic wave has a longitudinal component of the electric field hitting the double electric layer and causing an increase in the liquid flow rate caused by vibration effects. The increase of the velocity is related to the decrease of the adhesion force of the liquid to the inner wall of the capillary. It is shown that if vibration is switched on, the outer layer of liquid starts to move with some speed, hence the flow rate of liquid will increase. The vibration is caused by electric component of electromagnetic wave. Calculations have shown that the considered effect should also be observed at low intensities of electromagnetic wave.
Research of the influence of feedback signals in the neuroregulator on the quality of regulation
Authors: Dementev D A , Maximova E D , Sysoletin I A , Mezin S V 
Published: May 2021

Abstract
This paper describes the research of the influence of feedback signals in the neuroregulator on the quality of regulation. The approach to creation of a method of development of automatic control systems using artificial neural networks as a regulator with consideration of real technical equipment of automation is described. The effectiveness of feedback in a neural regulator is analysed by carrying out a complex study in relation to the variation of the object’s parameters. For a clear comparison, the transients for each object configuration have been summarised in common graphs. In addition, in order to analyse the effectiveness of the selected configuration, a modular quality index was calculated for each case and these values are tabulated in a common table.
Optimization of the composition and properties of heterocomposite materials for coatings obtained by the activation-heliotechnological method
Authors: Ziyamukhamedova U , Rakhmatov E , Nafasov J 
Published: May 2021

Abstract
The article presents the results of research on the development of compositions and the study of the properties of heterocomposite materials for coatings used for equipment for the collection, storage and transportation of oil and oil and gas products protected from corrosion and hydro abrasive wear. On the basis of the analysis of the existing devices characteristics for the mechanical activation of mineral particles, the mechanical activator installation “System of running drums” was developed. Using Newton’s interpolation formula and Lagrange’s method, trigonometric and functional factors were determined, regression equations were derived, which were used to determine the optimal type of filler and the quantitative effect of the compositions and properties of composite coatings and the exploited aggressive environment influence on the properties of the material. Analysis of the results of theoretical and practical research on the rational use of natural minerals can be used as a scientific basis for the targeted use of physicochemical phenomena, in particular priority factors such as the formation of positively and negatively charged particles on the surface of the filler-binder phase division.
Research the content of waste (yellow oil) of the shurtan gas chemical complex in Uzbekistan
Authors: Tilloev Lochin , Dustov Khamro , Alimov Azam , Bobokulov Farkhod , Ruziev Furkat 
Published: May 2021

Abstract
This article discusses the properties and composition of used oil for the purpose of processing waste oil which is a waste of the gas chemical complex to obtain secondary products and reduce its environmental damage through the efficient use of waste accumulated over the years.The study uses traditional methods for separating yellow waste oil by settling, determining the properties of the separated substances, separating dissolved gases when heating liquids, sampling and determining the gas content using a gas chromatograph and modern methods for calculating the properties of a gas mixture.As a result of the study, the physical properties of the waste oil and the oily part extracted from it were determined, the waste oil and the gases dissolved in the oil part were separated, their hydrocarbon content was determined, the properties of the gas mixture were studied.Based on the results of the study, an effective method for separating waste yellow oil was developed. The necessary information was obtained in the process of designing equipment and devices for processing the oily part. In addition to cleaning the waster oil from toxic substances released into the environment by direct degassing after installation at a temperature of 70°C, additional gaseous fuel for process furnaces can be obtained. Besides, the decomposition of emulsions can be achieved by improving the solubility in water of mineral salts mixed with oil and polymer components in the waste yellow oil. This, in turn, leads to the conclusion that degassing can accelerate the decomposition of waste oil by settling it.
The application of 3D printing systems in the bachelor’s engineering educational process
Authors: Kovalenko I V , Amuzade A S , Bobrovand A V , Petukhov R A 
Published: May 2021

Abstract
In this article the abilities of 3D-printing technologies in the bachelor’s educational process are considered in the specialities of electric power industry and electrical engineering. An example of the 3D printing systems implementing in the educational process and the experimental modeling is presented in research works of students. The analysis of problems arising in the implementation of 3D printing systems was made and the assessment of the student’s interest degree and motivation in operating with this technology were carried out. As a result, it was concluded that 3D printing can help create an improved learning environment for students, and takes into account different methodological styles of the educational process.
Effect of a powerful low-frequency signal on an anisotropic medium over hydrocarbon
Authors: Yanushkevich Viktar F , Dauhiala Dzmitry A , Adamovich Aliaksandr L , Abramenka Siarhei N , Bogush Vadim A 
Published: May 2021

Abstract
The article analyses the interaction of a powerful low-frequency signal with an anisotropic medium over hydrocarbon deposits. The behaviour of the real and phase components of the surface impedance of the medium above the deposit in the mode of dual-frequency signals is studied. The analysis of the components of the surface impedance of the medium over hydrocarbons for electromagnetic waves with right and left circular polarizations is carried out depending on the permittivity and frequency of the probing signals. The obtained research results can be used in exploration geophysics to identify the environment above the deposits by the size and nature of the material and phase components of the surface impedance of the surface layer above the hydrocarbons.
Metrological analysis of a magnetometer to measure the magnetization of magnetic nanofluids in strong magnetic fields
Authors: Bolotov A N , Novikov V V , Novikova O O 
Published: May 2021

Abstract
The successful application of magnetic nanofluids requires magnetometric instruments for studying their magnetization processes. The paper proposes a design of a mobile magnetometer with Hall sensors, which made it possible to take into account the features of the physical and mechanical properties of a wide range of laboratory and industrial magnetic nanofluids. Permanent magnets made of SmCo
5
alloy and magnetic cores made of soft magnetic steel form the device magnetic circuit. Magnetic fluxes add up in a magnetic fluid area and create a uniform field with an intensity up to (2 ÷ 4) ⋅ 105 A/m. The magnetizing magnetic field intensity and the value of the magnetic field induction in a nanofluid are measured using Hall effect transducers, which are connected oppositely in a single measuring electrical circuit to determine the Hall EMF of the proportional magnetization of the material under study. A circuit method for correcting the non-equipotentiality EMF is used to improve the measurement accuracy. A comparative estimate of the relative error in measuring the magnetization of magnetic nanofluids was less than 2 %. It has been established that the magnetometer methodological error is due to the fact that Hall effect transducers do not reflect the field in the substance correctly due to non-magnetic gaps. The device methodical error was estimated by numerical simulation of the magnetic field parameters in a real magnetic system of the MDM-P1 device using the Elcut computer program. Based on the results of a numerical analysis of the device magnetic system model, we have found the dependences of the methodological error in measuring the induction of the magnetic field in the substance and the magnetizing field intensity on the size of non-magnetic cavities in the device magnetic circuit and the magnetic properties of the materials under study. It is shown that the relative methodological error in determining the magnetization of magnetic nanofluids on the MDM-P1 device does not exceed 1 %.