bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of nanocomposite materials in plasmon surface resonance spectroscopy
Authors: Yatsyshen V V 
Published: December 2022

Abstract
The paper shows that nanocomposite materials based on a dielectric matrix with metal nanoparticles uniformly distributed in it can serve as a reference material in surface plasmon resonance spectroscopy. At certain concentrations of nanoparticles, such a nanocomposite, in contrast to the nanoparticles themselves, acquires the properties of a resonant material in which the real part of the complex permittivity takes negative values and, thus, the nanocomposite becomes surface-active. Surface plasmon polaritons can be excited at its boundary. For this reason, such a nanocomposite can be used as a reference material, similarly to the silver layer used, in the analysis of the optical properties of samples by surface plasmon resonance spectroscopy. The case of circular polarization of light incident on the structure under study is considered. The analysis of ellipsometric parameters of reflected light is carried out. The high sensitivity of the method is shown. In the range of incidence angles of 35° - 55°, the most pronounced angular dependence of the ellipsometry parameters is observed. Taking into account the analysis carried out, it is possible to suggest using these patterns in SPR spectroscopy to analyze materials in a structure containing a layer of the material under study and nanocomposites as reference elements, against which a sharp extremes of reflected light appears.
MapReduce and Apache spark: technology analysis, advantages and disadvantages
Authors: Urazmatov T Q , Sh Kuzibayev X 
Published: December 2022

Abstract
Nowadays, it is absolutely illogical and impossible to process big data using traditional software methods and hardware. because too much data available does not allow this. However, there are some effective ways to perform such operations. This article discusses the main problems and solutions for processing big data. Today, there are a number of technologies and algorithms that process and analyze big data. This article mainly discusses, analyzes, and summarizes the advantages and disadvantages of the MapReduce architecture and Apache spark technology, and the results are presented in tabular form.
About the method of assessing the quality of big technical systems based on the rules of subtraction of matrices of values of indicators
Authors: Bilyatdinov K Z , Krivchun E A 
Published: December 2022

Abstract
The article presents a basic formula and a universal table for development of structure functional models of big technical systems. The method takes into account priorities of performed functions and substructures of big technical systems, also, maximum and minimum values of basic indices of technical systems. In order to compare “ideal” and real models it is recommended to use a corresponding subtraction of matrixes of quality indices. For this purpose, matrixes of indices are sorted into two groups: the one, where the minimum value of an index is considered the best, and another, where the maximum value is considered the best. The results of matrixes subtraction make a basis for the rules of models comparison. The article demonstrates a specifically designed table for processing of the results of matrixes subtraction and calculation formulas of standardized weighting coefficients of importance for each index and a complex quality index of maintenance of the assessed systems. It also contains rules of making ratings of systems’ quality. The main positive effect from the application of the proposed method is a considerable decrease of time and resources needed for the quality assessment of systems and a possibility of software realization of a rational processing of information in the process of management of big technical systems’ maintenance.
The role of measurement and the significance of metrology in industrial production
Authors: Andreev D V 
Published: December 2022

Abstract
The authors of the paper consider the role of measurements and the importance of metrology in industrial production. The article deals with the issues of modern development of metrological support, in order to reliably assess the quality of products. The authors draw attention to the fact that measurements are the most important tool with which people can cognize the phenomena and objects of the entire surrounding world.
Modification of the Berlekamp-Massey algorithm for explicable knowledge extraction by SIEM-agents
Authors: Fomicheva Svetlana , Bezzateev Sergey 
Published: December 2022

Abstract
The article discusses the problems of applying self-explanatory machine learning models in Security Information Event Management systems. We prove the possibility of using information processing methods in finite fields for extracting knowledge from security event repositories by mobile agents. Based on the isomorphism of fuzzy production and fuzzy relational knowledge bases, a constructive method for identifying patterns based on the modified Berlekamp-Massey algorithm is proposed. This allows security agents, while solving their typical cryptanalysis tasks, to use the existing built-in tools to extract knowledge and detect previously unknown anomalies. Experimental characteristics of the application of the proposed algorithm are given.
A methodology of coupled modeling of vacuum blocks of industrial installations
Authors: Osipov Eduard , Telyakov Eduard , Ponikarov Sergey , Bugembe Daniel , Ponikarov Artem 
Published: December 2022

Abstract
The article presents the methodology of coupled modeling of the main blocks of a chemical-technological system operating under vacuum. The system analysis of vacuum blocks is carried out and the basic rules of technological calculation are formed, in which the evacuated technological object and the vacuum overhead system are considered as a single system with inter-dependent elements. The presented methodology was applied when calculating the vacuum block of the primary oil refining process of a mini-refinery working on fuel oil, as a result of which an integrative characteristic of the block was compiled, which takes into account the mutual influence of the vacuum system and the technological object on the residual pressure at the top of the vacuum column. The adequacy of the developed model was ascertained by comparing with industrial research data. In line with the proposed methodology, numerical experiments were carried out accordingly in which the temperature of the service liquid being fed into the pump was changed. The results of the calculations showed that, achieving the given project Pressure under the current block component setup (P= 40 mm Hg) was not possible as a reason of the increased resistance in the shell side of the condenser.
Study of the electrical parameters dependences of oblique log-periodic antennas on the geometric structure of their reducing elements
Authors: Bestugin Aleksandr , Dvornikov Sergey , Dvornikov Sergey , Kirshina Irina 
Published: December 2022

Abstract
Antenna systems are an integral part of any transmitter-receiver device. A broad-band and frequency-independent antenna can be created applying a principle of electrical similarity. Its essence is that the electrical parameters of antennas remain unchanged if, with a decrease or increase in wavelength n times and, accordingly, decrease or increase the linear dimensions of the antenna elements. It is very important to guarantee the constancy of the antenna-radiating element’s parameters in a sufficiently wide frequency range. Log-periodic, biconical and various types of helical antennas satisfy these requirements. Structurally, a log-periodic antenna is a complex structure consisting of a symmetrical two-wire or four-wire collecting line. Radiators of the same type are connected to it in a cross order. The paper presents results obtained on the basis of modeling the electrical parameters of wide-range log-periodic antennas of the decameter range with different shapes of radiating elements in the MMANA-GAL environment. The authors considered methods for constructing periodic structures of flat log-periodic antennas. The interrelation of their structural elements is presented. It determines properties of wide-range operation. The electrical parameters dependences of inclined log-periodic antennas on the structural differences of their radiating elements are investigated. The conditions for the vibrator and frame emitters application are substantiated while maintaining the range properties of the log-periodic structure.
Simulation statistical modeling in the study of the laws of large numbers
Authors: Trofimets Elena , Trofimets Valery 
Published: December 2022

Abstract
The paper considers the theoretical foundations of the Monte Carlo method based on the limit theorems of probability theory. Simulations of a coin toss and the number of determination are given and described. The authors proved experimentally that sufficiently high accuracy of solving problems with the Monte Carlo method application is guaranteed only when a large number of experiments are carried out. Therefore, the Monte Carlo method is practically implemented only with the computer. The procedure for generating random numbers is a fundamental basis of the statistical test method. The average values tend to some constant with an unlimited increase in the number of experiments. It was found on the basis of a comparative analysis of the obtained results when studying the laws of large numbers by the method of simulation statistical modeling in MathCad and MS Excel. The Limit theorems guarantee the high quality of statistical estimates obtained by the Monte Carlo method for a large model dimension n. However, practically acceptable estimates of the simulated system’s characteristics can often be obtained even at relatively small values of n (of a few tens and hundreds). It has been proven that averaging the values obtained over several runs of the model significantly improves the quality of statistical estimates.
Analysis of the performance of languages for working with the ontological model of the assembly of 3D-constructions
Authors: Voinov Artem , Senokosov Ilya 
Published: December 2022

Abstract
The paper studies the performance of various languages used to work with ontological models. The languages are used in the methodology for modifying and verifying the 3D construction ontology presented in this paper. The methodology consists of three stages: building an ontological model of the assembly system and an ontological model of the desired 3D structure, modifying the original 3D structure model, and verifying the result in order to decide on further actions. The paper considers two groups of languages: query languages and modification languages. SQWRL and SPARQL are analyzed as query languages, and OWL DL and SWRL are used as modification languages. The comparison is based on the speed of performing such basic Boolean operations as conjunction and disjunction. To achieve the greatest objectivity a study is carried out on models of different dimensions. All measurements are made in the Protégé system since this system supports all 4 languages, the dependence of the runtime results on the runtime environment is minimized. The evaluation results are presented as a graph of the dependence of the rate of change in the process of performing an operation on the number of elements in the ontological model. The conclusion shows that the languages OWL DL (reasoner Pellet) and SWRL as ontology transformation languages and SPARQL as a query language are most suitable for working with the assembly ontology of 3D structures.
Study of corrosion resistance of friction welding joints between tubes and tube plate
Authors: Karetnikov D V , Tokarev A S , Yakhin A V , Fairushin A M 
Published: December 2022

Abstract
The cost of production and reliability of shell-and-tube heat exchangers is mainly determined by the features of the tube bundle and the joint between tube and tube plate (TTP) in particular. This paper provides a comparative analysis of the weld structure and electrode potential distribution of weld joints and base metal seams simulating the joint between heatexchange tube and tube plate (steel 5CrMo16) using the following welding methods: manual metal arc welding, gas tungsten arc welding and rotating friction welding. Comparison between macro- and microstructures of certain zones of tested welded joints, as well as values of electrode potential at specific points of the base metal and welded joints obtained by various methods, made it possible to conclude the effectiveness of application of specific ways of welding by their effect on corrosion resistance of given assembly.
Assessment of the possibility of using RFW for the production of composite joints from steel X10CRNITI18-10
Authors: Karetnikov D V , Tokarev A S , Yakhin A V , Fairushin A M 
Published: December 2022

Abstract
An effective way to avoid heat treatment in the production of pipe beams of heat exchange apparatuses is to replace tungsten inert gas (TIG) welding with rotary RFW (RFW), but at the moment there is no information on the characteristics of welded joints of steel X10CRNITI18-10 obtained by RFW. In this article, the possibility of using RFW to obtain composite joints of a changed design was evaluated. To do this, studies were carried out on the structure of the metal, tests for static tension and impact bending of samples of X10CRNITI18-10 steel obtained by RFW.
Modeling and optimizing of complex electrodynamic objects
Authors: Ya Lvovich I , Lvovich Ya E , Preobrazhenskiy A P , Preobrazhenskiy Yu P , Sakharov Y S 
Published: December 2022

Abstract
This paper is connected with the necessity of problem modeling and optimizing complex electrodynamic objects. A hollow structure is considered as such object. Its shape and main dimensions are set. It is required to determine the value of the size of the selected element to ensure the maximum average values of the characteristics of the object under study. In the course of modeling the scattering of electromagnetic waves, the method of integral equations was used. The collocation method was used to solve integral equations. The algorithm for determining the dimensions of an element of a hollow structure was developed. The approximation of the dependence of the element size on the length of the entire object was carried out.
Statistical evaluation of a robotic six-wheel structures mechanism based on motion simulation
Authors: Magomedov I A , Luis Ordoñez-Avila José , Bagov A M 
Published: December 2022

Abstract
In this work, a Mars rover is used to collect results on overcoming some of the obstacles that may be encountered in a Martian mission. These rovers are primarily used to gather information on the surface of Mars about past water activity. Therefore, the ability to overcome an unknown set of obstacles and how its function in different scenarios is vital. The aim of this work is to compare two proposed mechanisms for six-wheeled robotic structures through descriptive statistics and correlation test. As main results it was found a strong relation between the contact force between wheels and obstacle with the torque of the motors. Concluding that structure 1 has better performed in linear velocity and structure 2 use his independent links are used to reduce the contact force.
Overview of finish machining methods for the internal surfaces of rectangular pipe parts
Authors: Ivanov P A. , Levko V A , Litovka O V 
Published: December 2022

Abstract
The article deals with the proble of finish machining the internal surfaces of straight and curved pipe parts of rectangular cross-section. There is carried out analysis of technological capabilities of special finish machining technologies of internal surfaces in the Russian Federation. General information, disadvantages and advantages of these methods are presented. The selection criterion is the uniformity of machining on straight and curved parts of the pipe part. There are proved the main advantages of choosing an abrasive flow machining method as a fairly inexpensive method of finish machining. A scheme for finish machining the internal surfaces of rectangular parts is proposed. The composition of the working medium has been chosen, which allows for uniform machining, including in the corners of a rectangular cross-section.
Laser diagnostics of multi-axis machines for volumetric error
Authors: Sokolov V A , Teleshevskii V I , Masterenko D A 
Published: December 2022

Abstract
The paper describes a method of laser correction of geometric errors for CNC-controlled multi-axis equipment – CMMs and machine-tools. The method utilizes Kalman’s concept of “control and observation”. A multi-function laser interferometer is suitable to be used as an “observer” for digital production, and a CNC-programs postprocessor, introduced between CAM and CNC-systems, is used as “controller” of machine-tool’s accuracy. The result is three-dimensional distribution of volumetric accuracy within machine’s workspace – an important tool for diagnostics of the machine and the production process in general and its ability to produce and measure precision parts in particular.
Automated control and control system of emissions into the atmospheric air of thermoelectric-power industries
Authors: Kulakova E S , Safarov A M 
Published: December 2022

Abstract
The article describes new approaches to the systems of automated monitoring and control of emissions into the atmospheric air of thermoelectric-power industries. The purpose of creating such systems is to reduce the level of impact on the air of residential areas and control its quality. The basis of this air quality management system is the continuous measurement and registration of pollutant concentrations both at emission sources and in the air of residential areas. Due to the analysis of meteorological conditions in combination with the use of the method of marker compounds, statistical processing of the obtained analytical data, a decision is made not only about the degree of impact on the environment, but also the determination of the specific polluter of this contamination. The complexity of this goal lies in the need to maintain a large fleet of analytical measuring instruments with varying degrees of sensitivity. The article proposes methods to reduce the diversity of the instrument base, which leads to an improvement in the performance of automated air quality control devices and to simplify the maintenance of such systems. The use of such systems allows for the optimization and digitalization of air quality management systems in the residential area as a whole through the use of various controllers and soft hardware.
On application of WEB-GIS technologies in environmental screening of territories
Authors: Letyagina E A 
Published: December 2022

Abstract
This article discusses application of WEB-GIS technologies during environmental screening of territories of the Russian Federation, raising questions about the essence of the concepts of “GIS” and “WEB-GIS technologies”, and the understanding of the content aspect of these terms. Moreover, the possibility of using WEB-GIS technologies in conducting environmental monitoring is considered in sufficient detail, and the potential of these systems for the state bodies’ exercising control over the state of the environment is revealed. The article provides illustrative examples of application of WEB-GIS technologies in the implementation of environmental screening in the Krasnoyarsk Territory, a subject of the Russian Federation. In addition, the factual data – publicly available at any time through the Internet both in retrospect and by specific monitoring parameters at a particular point tied to an exact location – are analyzed. The study also identifies specific positive aspects of the use of corresponding GIS by state authorities in monitoring the state of the biosphere and tracking local environmental problems for making appropriate regulatory decisions that ensure the safety of life of the population. Furthermore, the authors identify trends, directions of development, and prospects for further use of WEB-GIS technologies during environmental screening in the territories of the Russian Federation.
Description of the development of an experimental stand for the detection of defects in pipelines
Authors: Korobova L A , Matytsina I A , Kalugin V A , Tolstova I S , Mironova M S 
Published: December 2022

Abstract
The article discusses a bench that allows you to monitor the change in the dynamic characteristics of the medium when various types of defects appear in the connection lines. The setting makes it possible to select the optimal method for recording the measured values. The experimental stand was created as close as possible to the real conditions of the pipeline operation. To detect damage to the air circuit, the integration of technical developments with a software algorithm based on the use of the multiple signal classification method (MUSIC) was applied. The developed stand opens up opportunities for conducting practical experiments and obtaining experimental data directly when detecting pipeline defects.
Metrological aspects of determining the electron concentration and the conductivity of a melt using a conductivity sensor
Authors: Revunov G M , Kryachko A F 
Published: December 2022

Abstract
For radiophysics, research into plasma physics is of great interest. 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. The resulting plasma around a hypersonic aircraft has a very high concentration of electrons and prevents the propagation of electromagnetic waves in space, partially absorbing them and reflecting them from its surface. When measuring the electron concentration, it is necessary to take into account the measurement error. In this article, the error is measured on the basis of expressions obtained for a transmission line whose longitudinal dimension exceeds the wavelength propagating in it. Mathematical model for finding the error in determining the electron concentration and melt conductivity is considered, and an analysis of the optimal combination of sensors is carried out.
Modeling of functioning of a functionally gradient transversally isotropic hydroacoustic coating on a rigid vibrating body wall
Authors: Storozhev S V , Storozhev V I , Bolnokin V E , Mutin D I , Sorokin S A , Minh Hai Duong , Zaslavskiy A A 
Published: December 2022

Abstract
A numerical and analytical technique is presented for the computational analysis of the performance indicators of a functionally gradient transversally isotropic flat single-layer hydroacoustic coating with a variable exponential transverse inhomogeneity index, fixed along one of the boundary surfaces without slippage with an ideal contact on a rigid vibrating body wall and contacting on the opposite surface with a half-space of an ideal slightly compressible fluid. In addition to the vibrations of the housing surface, the model takes into account the impact of a plane hydroacoustic pressure wave normally incident on the contact boundary of the coating and the liquid, and the evaluation of the effectiveness of the coating is based on the analysis of the cumulative intensity of the pressure wave emitted by the surface of the coating contact with the liquid under these complex influences. An example of calculations using the described technique is considered, within the framework of which estimates are obtained for the values of the inhomogeneity parameter that ensure the most effective functioning of the coating in various frequency ranges of the effects under consideration.