bluuebunny/crossref_metadata_2025_split huggingface dataset:
The time characteristics’ analysis of deterministic information processing models in automated control systems
Authors: Losev V V , Lifar A S , Koltashev A A , Sergeev I U 
Published: December 2022

Abstract
The article presents the formation of the approach for evaluating and analyzing the time characteristics of deterministic information processing models in automated control systems. The approach of operational routes formalization within the technological management cycle and its time characteristic assessment is proposed as an optimization procedure. The Floyd algorithm’s realization to determining the shortest time path of the technological control cycle’s graph is shown.
Modeling and visualization of the intersection of a polyhedral surface by a plane
Authors: Prikhodko Victor , Shumun Natalya 
Published: December 2022

Abstract
The questions of constructing a line of intersection of a polyhedral surface with a plane in general position are considered on the example of a triangular straight prism. Equations are analyzed that make it possible to calculate the coordinates of the obtained points of intersection of surface elements (side edges) with a plane in general position. With the help of a mathematical model, the coordinates of the vertices of the resulting triangle were found, i.e. sections of a right triangular prism by a plane in general position. Then the perimeter of the section of the surface by the plane was determined. As a method for solving the problem, the method of replacing projection planes is used. In this case, the plane of general position is transformed into a front-projecting plane. The problem is simplified, reduced to a simpler problem that can be solved formally. The equations of three lateral faces of a straight prism are composed. The system of equations of two intersecting side faces is analyzed. The system of equations for finding the point of intersection of the side edge and the transformed plane of particular position is solved. The perimeter of the resulting section is determined as the sum of the lengths of the sides of the section triangle. A 3D model of the intersection of a triangular prism and a plane in general position is made. The visualization tools of the AutoCAD computer-aided design system were used.
Error of determination of radio-brightness temperature and temperature of plasma electrons
Authors: Revunov G M , Kryachko A F 
Published: December 2022

Abstract
In our time, plasma physics is a hot topic of research. During the movement of a hypersonic aircraft, the main physical phenomenon, which radically affects the conditions for the propagation of electromagnetic waves in its vicinity is the formation of a plasma shell around the apparatus due to the ionization of neutral particles. When measuring the radio-brightness temperature and the temperature of plasma electrons, it is necessary to take into account the measurement error. In this article, these measurements are carried out, and the dependence of the root-mean-square relative error of temperature measurement on the power division factor is also given.
To the issue of forecasting the main parameters of carbons’ quality based on the vector simulation
Authors: Rusina Larisa 
Published: December 2022

Abstract
During the prospecting the quality parameters, except for ash content, are specified by core samples and laboratory methods (geological sampling). Nevertheless, while prospecting the receipt of the representative sample with all its specified parameters being identical to the parameters of the carbon layer is difficult because of partial core recovery, its choking, etc. So, it is highly necessary to specify and to forecast the parameters of carbons’ quality by “indirect” methods which depend on sample representativeness. According to the experience that we have in specifying ash content by the data of the geophysical bore-hole logging (GBL), it is the geophysical sampling that meets this requirement. However, the deterrent of the use of the GBL data for specifying and forecasting of carbons’ quality parameters is the necessity of taking into consideration of a great number of factors (genetic and epigenetic ones) which can not be analyzed using the current mathematical methods. Only the vector simulation solved this task and helped to use the results of geophysical bore-hole logging for forecasting the parameters of carbons’ quality in full measure. The vector simulation will allow to enhance reliability and informativity while forecasting the main parameters of carbons’ quality in the rock mass according to the GBL data at the stage of geological exploration. While systematizing the geological and geophysical information the developed mathematical model, presented by structural vectors of system’s transient states, will enable to take into account some genetic and epigenetic factors in total. These factors influence the reliability of forecasting about such main parameters of the carbons’ quality as ash state, yield of volatile matters, moisture of analysis sample, thickness of plastic layer in the layers where geological sampling is not conditioning.
Computer simulation of the dynamics of heat release in diesel cylinders
Authors: Buzikov Shamil , Matushkina Julia , Matushkin Oleg 
Published: December 2022

Abstract
The relevance of computer mathematical modeling, and processing of initial experimental data for follow-up assessment and analysis of the dynamics of heat release in diesel cylinders is growing every day. The main goal of our research consists in the development of a computer model defining the dynamics of heat release in diesel cylinders when it is running on fuels with different fractional composition, based on the application of the method of the Central Research Diesel Institute by analyzing the experimental data obtained in the form of an indicator diagram. The object of research is the method of processing the obtained experimental indicator diagrams. For this purpose, indicator diagrams of a 4CHN 11.0/12.5 diesel engine of the D-245.5S2 brand were obtained in the nominal mode. To implement the software module, a Java programming procedure was used, including the Java Development Kit where the writing, launching and compilation of Java code took place, the Java Runtime Environment, the Java runtime system, where the software distribution mechanism consisted of an autonomous Java virtual machine, standard Java libraries and tools for configuring it; and the Integrated Development Environment of an integrated development environment, where tools that helped launch, edit, and compile codes that provided thermal characteristics. As a result, an analysis of the available methods for determining the characteristics of the dynamics of diesel heat release was carried out, for the first time an algorithm was developed for performing calculations by the method of the Central Research Diesel Institute and a software module for calculating the characteristics of the dynamics of heat release in diesel cylinders when using fuels of various fractional composition based on experimentally obtained indicator diagrams. The use of the proposed technique and the corresponding software module for processing indicator diagrams, and subsequent analysis of the characteristics of the dynamics of heat release in diesel cylinders provides the required quality of the research results.
Optimizing the parameters of leather pressing machines
Authors: Turgunov K K , Annaev N U , Umarov A A 
Published: December 2022

Abstract
The work is devoted to the optimization of the parameters of leather pressing machines. Regression models of the residual moisture content of leather and the intensity of the pressing process are developed. which depend on the intensity of the load. the radius and the speed of the rollers. A number of patterns were established that allow increasing the efficiency of leather pressing by rollers. An extremum problem was solved to determine the diameter of the rollers that provide the minimum deflection of their working part. the content of residual moisture required during the pressing process and the minimum power required to conduct the pressing process.
Possibilities of measuring roughness with the probe contact method and promising methods for improving the process
Authors: Epifantsev K V , Mishura T P 
Published: December 2022

Abstract
One of the main operational properties of the product is the surface roughness. The presence of micro-dimensions and their size affect the strength, chemical resistance, abrasion and even the appearance of the product. But any real surface after metalworking acquires depressions and protrusions that are absent on a perfectly smooth surface. Therefore, the determination of surface roughness is one of the key parameters for metal products.
Processes occur on the surfaces of parts that have a negative impact on them: the emergence of cracks, wear due to friction, erosion and corrosion damage, crumpling. Often such defects in materials have no less impact than deformation. The addition of certain microgeometric properties to the surface increases the resistance of the part to external influences and, as a result, increases strength and reliability. Therefore, the surface roughness parameters are of extremely important technical importance. In the course of research, the question of the variability of roughness on the surface of plexiglass from the effects of sandpaper of different grain sizes was investigated. The problem of scratches of plastic elements is very acute, especially when it comes to protecting the exterior of parts made of plexiglass and plastic. That is why a study was conducted showing the dependence of roughness on the sample of abrasive material
Hierarchical model simulation based on EKF for mobile robots
Authors: Almendares E P , Luis Ordoñez-Avila Jose , Magomedov Islam 
Published: December 2022

Abstract
With the technological advance grows the need for optimization in the tasks performed by mobile robots, these must be endowed with autonomy and other decisions, this is because the operating environments become more complex and with obstacles and objectives that change position, adding to this the interferences of the workspace such as disturbances in the environment and other system noises. To address this problem, the use of navigation algorithms, route creation, position estimation, path tracking, object recognition and others are used. In the present study, a spiral methodology was used with which a mathematical model based on the extended Kalman filter (EKF) was developed for trajectory tracking and position estimation of a differential robot using its kinematics. For the validation of the mathematical model Matlab was used together with CoppeliaSim where the different test scenarios were carried out, later the results of EKF are compared with those of Kevin Passino’s algorithm, finding superior in most aspects to the EKF except in the time when Kevin Passino’s algorithm achieves a shorter simulation time.
Optimization of recognition of micro-objects based on reducing excessive information structures of images
Authors: Jumanov Isroil I , Safarov Rustam A 
Published: December 2022

Abstract
Scientific and methodological foundations of identification, recognition, classification of micro-objects using redundant information structures - morphometric, histological, fractal characteristics of images have been developed. Mechanisms for extracting statistical, dynamic, specific characteristics and rarefaction of redundant information structures are proposed. Dynamic models have been developed, combined with the capabilities of neural networks. Computational schemes for preliminary processing of images, texture, segmentation, filtering, approximation, regulation of variable values and optimization have been developed. Methods of recognition and classification of micro-objects with tools for obtaining images from a photo, video camera, digital microscope, interactive measurement, counting, structure determination, statistical analysis, isolation and segmentation, and the formation of informative (reference) points of image contours have been investigated. The traditional computational schemes of a multilayer neural network, a Kohonen neural network, and a radial-basic network are investigated. Modified algorithms for training a network with mechanisms for adjusting the values of variables, monitoring errors along the boundaries of permissible values, accounting for stationary, quasi-stationary and non-stationary behavior of image points during the formation of training samples have been developed. Generalized algorithms for the identification of images of pollen grains are proposed. The efficiency of the algorithms was investigated according to the criteria of the root mean square error and the speed of information processing. A software package for visualization, recognition, classification of images of pollen grains has been developed, the implementations of which have been tested taking into account the conditions of a priori insufficiency, uncertainty and nonstationarity of processes.
Notch filter on differential difference operational amplifier
Authors: Yu Denisenko D , Prokopenko N N , Ivanov Yu I , Butyrlagin N V 
Published: December 2022

Abstract
A new notch filter (NF) circuit based on a single differential difference operational amplifier (DDA) has been developed and studied, which is characterized by reduced current consumption in the static mode. Equations are obtained for the transfer functions and parameters of the NF, which includes a low-pass filter and a Sallen-Key high-pass filter, the signals of which are summed by the DDA. Computer modeling of the NF in CAD Micro-Cap was performed.
The simulation of the process of operation of installations of the highest accuracy for reproduction and transmission of units of physical quantities
Authors: Ershov D S , Levina T A , Adylina A P , Grozovsky G I , Parfenyeva I E 
Published: December 2022

Abstract
The paper presents an example of mathematical modeling of the process of reproducing units of physical quantities by installations of the highest accuracy and their transfer to measuring instruments in the form of a non-stationary service system. The use of non-stationary service systems makes it possible to evaluate the efficiency of the process under overload conditions at the directive interval, as well as to evaluate the most important characteristics of the functioning process, for example, such as the probability of failure to perform reproduction and transmission of units of values by installations of the highest accuracy in a timely manner, etc.
The influence of CO2 concentration on production processes in digital artificial agricultural ecosystems
Authors: Grishin Alexander P , Grishin Andrey A , Grishin Vladimir A , Semenova Natalya A 
Published: December 2022

Abstract
It is noted that digital artificial agricultural ecosystems imply the use of digital control systems of abiotic factors, with appropriate software and algorithms. The algorithm through thermoregulation ensures the highest flow of moisture and nutrients through the plant. The leaf temperature corresponds to the maximum rate of photosynthesis. It is shown that CO2 assimilation and thermoregulation are related, as water vapor and carbon dioxide pass through the same stomatal openings. The aim of the research is to establish, for selected samples of vegetable crops, the level of CO2 concentrations at which the biomass growth of these crops is maximal, as well as the degree of thermoregulation heat reduction for average CO2 concentrations of 1000 ppm and higher. A specially designed stand was used for the studies. The following crops were used for studies of the influence of CO2 concentration on the thermoregulation heat: from vegetables the cucumber cultivar “Courage” and from green spices the cultivar “Coriander”, and for studies of the influence of CO2 concentration on productivity - salad cultivar “Gambrel”. The samples were planted in four cubes of mineral wool, in each of which five plants were placed. Variable concentration was provided by a system of carbon dioxide supply from a cylinder with a reducer, a hose and an electromagnetic valve. It was experimentally proven that the increasing of the CO2 concentration leads to an increase in the weight of green mass, and this increase has an extreme at the concentration of 2944 ppm (for the lettuce culture), with a slight decrease in thermoregulation temperature (for cucumber by 1.4 °C, and for coriander by 0.47 °C). Such a decrease will not lead to a significant deterioration of thermoregulation processes and may not be taken into account in the operation of digital control of them.
On the need to specify mandatory metrological requirements for measuring instruments to be installed on automated (autonomous) vehicles
Authors: Frolov A A , Silvestrov I S , Pudlovsky V B 
Published: December 2022

Abstract
The introduction of automated (autonomous) wheeled vehicles at the current stage of technology development is accompanied by the absence of mandatory requirements for new components of automotive equipment in the key regulatory legal acts of the states (for the Russian Federation - in the Technical Regulation of the Customs Union 018/2011). For the first time used on wheeled vehicles coordinate-temporal and line-angle measuring instruments, the ranges and measurement errors of both the measured quantities and all external influencing factors in which the measurement results should be obtained have not been established. At the same time, these measurement results will have a direct impact on traffic safety, protection of human life and health, property and environment. The article demonstrates a theoretical example of the use of automated (autonomous) transport, shows the need for testing measuring instruments planned for installation on transportation vehicles in the dynamic ranges of all influencing factors.
Acceleration of spiral scanning of soil by means of continuous wavelet transform
Authors: Vasiliev S A , Alekseev V V , Semenov V I 
Published: December 2022

Abstract
The scientific article shows the application of the method of continuous wavelet data transform to estimate soil breaking up when tilling. Due to the high speed of experimental data processing, it became possible to reduce the total time of soil section scanning for determining its agrotechnical parameters. The reduction of time is achieved by both choosing the type of spiral along which scanning is performed and choosing the angular velocity. On the whole, scanning is performed twice as fast per one revolution depending on the studied area of the field. In some cases the number of revolutions can be reduced by 3-5 times.
An algorithm for optimizing short-term modes of electric power systems, taking into account the conditions of the nature of the probability of the information flow of data
Authors: Siddikov I , Porubay O , Mirjalilov O 
Published: December 2022

Abstract
The work contains the results of the analysis of studies that were carried out to improve the operating modes of power facilities, taking into account uncertain data and the possibility of changing the load. A mathematical model of energy objects is formulated taking into account various types of restrictions. A comparative analysis of methods for solving problems was carried out and a method based on a penalty matrix was chosen. The results of the experiment showed the effectiveness of the proposed method for optimizing the modes of power facilities during changes in loads in different periods.
Prediction of reduced glass transition temperature of metallic alloys based on a neural network
Authors: Viatkin Dmitrii , Zakharov Maxim , Zhuro Dmitrii 
Published: December 2022

Abstract
The reduced glass transition temperature Trg is an important glass forming ability parameter. Trg describes the glass formation in materials and the behaviour of materials at the transition between solid and liquid states and is an important parameter for materials analysis, development, and production process. This article describes the process and results of research on the development of a system for prediction of the reduced glass transition temperature Trg of metallic alloys based on recurrent neural network algorithms. The developed system can predict the reduced glass transition temperature Trg of metallic alloys based on the analysis of its chemical formula with high accuracy. The accuracy was evaluated using the 3 metrics: MSE, RMSE, MAE. Obtained values are: MSE value is 0.000678, RMSE value is 0.0260, MAE value is 0.01835.
Discrete-time stabilization of wave phenomena engineering of network-like continuum transfer processes
Authors: Dudina K E , Provotorov V V , Part A A , Novikova E V 
Published: December 2022

AbstractThis work is a natural continuation of the authors’ research of flow phenomena in the direction of increasing the dimension of the network-like region of change in the spatial variable. The possibility of practical use of the stability analysis of the differential-difference scheme to solve the problem of stabilization of wave phenomena in the engineering of the process of transfer of continuous media through network-like carriers (pipelines, gas and oil pipelines, industrial carriers of gas and petroleum products) is shown. Namely, if the scheme is stable, then sufficiently small changes in the initial data of the mathematical model of the process under study entail small changes in the solution of the difference problem, i.e. in practice do not lead to undesirable consequences; if the scheme is unstable, then small changes in the initial data can lead to arbitrarily large changes in the solution. During the operation of the above-mentioned industrial structures, wave phenomena inevitably arise, the consequence of which are various kinds of instabilities, entailing destruction of one or another nature. The results obtained are used in the digitalization of modern technological processes for the movement of liquid media and gases.
Digital control by manipulator of railway track machine
Authors: Larkin Eugene , Privalov Aleksandr 
Published: December 2022

AbstractDigital control of manipulator of railway track machine (RTM). It is shown, that exactness and performance of operation execution are the main characteristics, which determine quality of work RTM. Manipulator design with pyramidal structure, in which mechanism is actuated with linear drives, placed in parallel, is described. Mathematical model of exactness evaluation, when there is dry friction at actuators, is worked out. It is shown, that mechanics parallelism leads to cross-links between grasp coordinates control channels. Flowchart of manipulator under investigation, as the object under control, is given. The analytical descriptions of object under control and control algorithm, underlying Von Neumann type controller, are fulfilled with description of delays, linked with features of controller operation, namely operator-by-operator interpretation of algorithm, unfolding in physical time. For estimation of time delays at interface between controller and manipulator semi-Markov model of Von Neumann computer operation is worked out. The method of estimation lags in contours, based on transformation the ergodic semi-Markov model into non-ergodic one, and computation expectations and dispersions of time interval from-point-to-point wandering through semi-Markov process, is proposed.