bluuebunny/crossref_metadata_2025_split huggingface dataset:
Use of a progressive web application for working with Earth remote sensing, topographic and cadastral data layers
Authors: Ginzburg I , Padalko S 
Published: September 2020

Abstract
This article proposes the use of the progressive web applications (PWA) for the geographic information systems’ (GIS) web user interfaces. The main advantages of this approach for GIS: use of arbitrary mobile and stationary devices; work in conditions of unstable connection to GIS server with fault-tolerant user input data delivery to the server, when the connection is restored; work offline with the information stored on client device, when the server is disconnected, and automatic synchronization of changed data, when the server connection is active; network traffic savings during data transfer. The above mentioned advantages are important for a number of practical applications in cadastral accounting and construction.
Mathematical simulation of the forecasting process of the fire hazard properties of substances
Authors: Korolev D S , Vytovtov A V , Kargashilov D V , Odnolko A A , Denisov M S 
Published: September 2020

Abstract
The article presents an original solution to the problem of fire hazard indicators of oil products determining using molecular descriptors and artificial neural networks. The modelling of the forecasting process was carried out on the basis of a neural network training algorithm with a teacher and an error back propagation algorithm. The resulting model makes it possible to determine the fire hazard properties of substances in real time without time span and other costs.
Mathematical modeling of theim pulse bubbling process of bulk mass by the coolant flow
Authors: Rogovskii I L , Palamarchuk I P , Kiurchev S V , Verkholantseva V O , Voinash S A , Sokolova V A , Gogolevski A S 
Published: September 2020

AbstractThe main directions of pneumodynamic system usage for storage of bulk agricultural products are bubbling and pneumatic mixing; loading and unloading of technological masses. During pneumodynamic impulse wave formation with alternation of supersonic and subsonic zones, which are limited by shock waves, sound force increasing on the technological mediumabout 150…170 dB, pressure increasing on the product mass due to compression-stretching at the pulse limits to amplitudes of 6…15 barare caused, that promotes implementation of loosening processes during the grain material storage. The developed scheme of the studied process involves the opposite arrangement of pneumatic impulse generators, which allows the formation of a stationary wave, that spreads the pulse energy in both longitudinal and transverse directions, covering the maximum space of the free flowing technological medium. Using the method of D’Alembert for solving the equations, methods of mathematical analysis and their processing in the MathCAD mathematical environment graphical and analytical dependences of force parameters of oscillatory system have been obtained. Choosing an effective mode of pneumodynamic loosening, the force pulse magnitude and the regularities of its change under conditions of the highest mechanical resistance of the free-flow mass have been used as the evaluation criteria the standing wave energy.
Fuzzy quality evaluation of the information system
Authors: Smirnov V A , Milova V M , Getmanova G V , Kurlov V V 
Published: September 2020

Abstract
The article considers the task of assessing the quality of an intelligent decision support system for monitoring complex technical systems. A hierarchical system of indicators of the information system quality is presented, with account to the specifics of the subject area. It is proposed to use information power as a generalized indicator of the quality of the upper level which is formed from group indicators of the 1st level: information potential, functional suitability, level of performance, compatibility, usability, reliability, security and maintainability. To aggregate heterogeneous indicators, both quantitative and qualitative, at various levels of the system hierarchy, measured on different scales and having a different range of values, an approach based on a fuzzy classification of parameter values and fuzzy inference using the Takagi-Sugeno algorithm is used. The quantitative assessment of the indicator is supplemented by a qualitative assessment, expressed in the form of a linguistic description and the degree of evaluative confidence in the result of the assessment, which is understandable and convenient when used in the decision development process. The considered structure of quality indicators and a fuzzy model for their assessment can be applied in the quality management of existing and promising decision support systems and automated information systems.
Bayesian model for evaluating the pragmatic efficiency of an information system of technological control
Authors: Smirnov V A , Milova V M , Milova N V , Smirnova M S 
Published: September 2020

Abstract
The article considers the problem of assessing the effectiveness of an intelligent decision support system for controlling complex technical systems at the level of a technological control system. To build a model for assessing the effectiveness of an information system, a pragmatic approach to measuring the value of information and an intelligent technology for forming a solution based on a Bayesian trust network were used. As an indicator of the pragmatic efficiency of the information system, it is proposed to use the pragmatic efficiency coefficient. It is determined by the increase in the probability of achieving the goal set for the technological control system, achieved through the use of additional information in decision-making. It is proposed to use the probability of error-free and timely execution of control as a target indicator characterizing the quality of control performance. The determination of the values of the target indicator of the control system with and without the use of the information system is carried out using the Bayesian trust network, which takes into account the relationship of the most significant elements of the technological control system. In comparison with the known methods, the proposed approach to assessing the effectiveness of an intelligent decision support system is based on joint use: a model for measuring the value of information and an adapted Bayesian model for calculating a target quality indicator. The approach considered in the article makes it possible to determine the coefficient of pragmatic efficiency, taking into account the value of the information produced to achieve the set goal and the uncertainty of the initial data.
Simulating of the heat conduction processes and their impact on the stress-strain state of the continuously welded rail structure
Authors: Fazilova Z , Loktev A , Shapran V 
Published: September 2020

AbstractOne of the most important parameters when laying and maintaining of continuous welded rail track is the stress-free temperature of continuously welded rails at constant duty of operation, however the regulatory documents do not take into account the thermal stress occurring in continuously welded rails due to deformations on the solid subgrade. The expansion of continuously welded rails laying territory in the sections with complicated engineering and geological conditions requires to study this issue and to develop recommendations for further operation of the continuous welded rail track in the zone of permafrost sedimentary soils. The paper presents the results of simulating of thermoelastic processes due to uneven heating of special elements of the continuous welded rail track structure.
Practical application of variance analysis of four-factor experience data as a technology of scientific research
Authors: Kartechina N V , Bobrovich L V , Nikonorova L I , Pchelinceva N V , Abaluev R N 
Published: September 2020

Abstract
The article shows the possibilities of practical application of the four-factor analysis of variance in research with fruit and berry crops, since the multifactorial experience, in contrast to the one-factorial experience, allows us to reveal not only the influence of two or more factors in one stationary experiment, one or another effective indicator and their combination, but also establish the presence of interaction of factors. The use of multifactorial experiments makes it possible to obtain significantly more information than single-factorial ones, which makes it possible to reduce the cost of funds, labor and time for the scientific solution of certain issues. Algorithms for mathematical processing of the results of a multifactorial experiment are given on specific examples of comparing the length of annual growth of branches of 9-year-old apple trees when studying the effect of four factors and eight options (variety, crown shape, crown orientation and sample size) in two gradations each (2x2x2x2). A compact, reduced algorithm for analysis of variance is presented, which has a number of advantages and can be used for various factorial schemes of multivariate stationary and other experiments, primarily due to a significant reduction in the time for data processing and analysis. Calculations according to the full scheme of the four-factor complex coincide with the final estimates of the differences in the mean values of the NDS of the proposed compact scheme.
Super diffraction resolution of coherent signals in angular coordinates in antenna arrays
Authors: Litvinchuk L A , Mishura T P , Kozlova O L 
Published: September 2020

Abstract
Based on the optimal algorithm for the super resolution of time signals, an algorithm is developed for the super diffraction resolution of coherent signals by the angular coordinates in the antenna arrays. In this case, the problem arises of resolving an unknown number of multidimensional parameters: shear angles, amplitudes, phases, and the number of total signals. In the mathematical environment of Matlab, a program has been created for processing the total diagram, results have been obtained for resolving several signals, and it is shown that up to 4 signals are possible in excess of diffraction resolution.
Mathematical model for an identifying flaming combustions and accidents by an unmanned aerial vehicle at oil and gas industry facilities
Authors: Vytovtov A V , Korolev D S , Barankevich R V , Sitnikov I V , Russkikh D V 
Published: September 2020

Abstract
This article presents an algorithm and mathematical model for an identifying flaming combustion automated process by an unmanned aerial vehicle. A digital image processed by software filters serves as a resource about an accident and fire at oil and gas industry facilities. The algorithm deals with the aircraft height, the movement speed relative to the observation point, as well as relative to the surface background, the combustion source brightness and the investigated area flicker frequency. The generated mathematical model allows to detect a fire hazard by a drone without operator intervention.
Discussion of cloud CAD software testing approach
Authors: Galimova E Y 
Published: September 2020

Abstract
In the life cycle of software systems, the testing phase is one of the most time-consuming and expensive. One of the fundamental issues in test planning is the choice between automated and manual methods for testing a software system or its individual modules. Since the choice can be different for individual modules, then in fact we are talking about a combination of these methods, and this is an important feature of CAD quality assessment. When choosing a testing method, it is recommended to take into account the specific characteristics of the tested software system. In this article, we propose to use a list of questions that can be used to determine the qualitative properties of such a test system. A list of questions is created using the ISO / IEC 25010: 2011 model. Developing a method to support the software testing process is an urgent scientific task.
The results of mathematical modeling of the operating modes of the feller machine
Authors: Chernik D V , Karelina A A , Kazancev R V , Litvinova M M 
Published: September 2020

Abstract
Feller machines equipped with articulated or mixed type manipulators are widely used in the Russian forest industry. In the process of felling trees, due to the wide variety of objects of labor, dynamic loads arise on the technological equipment of the machine, which must be taken into account when designing felling machines and harvesters. In addition, when designing these machines, questions arise regarding the choice of calculation tree parameters and some parameters of technological equipment. For the design of the machine, it is necessary to determine the maximum possible mass of the settlement tree and its length, which in turn depend on the species, the categories of trees and the climatic conditions of the region where the felling is planned. This article published the methodology and results of a study of the influence of species and discharge of trees on the dynamic loads of technological equipment of a feller manipulator.
Production technology and mathematical method for modeling the formulation of fruit and jelly candies enriched with collagen
Authors: Blinnikova O M , Babushkin V A , Akindinov V V , Perfilova O V , Novikova I M 
Published: September 2020

Abstract
Mathematical methods for designing recipes for various food products including fruit-jelly sweets of a given composition are based mainly on the methods of linear and experimental statistical programming. The use of the linear programming method made it possible to simulate the recipe for fruit-jelly sweets enriched with collagen. In the mathematical modeling of sweets, we were guided by a unified recipe for fruit-jelly masses, with a partial replacement of granulated sugar with strawberry powder and a solution of collagen hydrolyzate, replacement of fruit and berry cooking with strawberry puree. The requirements of GOST 4570-2014 for sweets were taken into account, according to which the mass fraction (ppm) of fruit raw materials should be at least 7%, ppm. moisture - no more than 32.0%, ppm reducing substances - no more than 60.0%. White sugar (x1), molasses (x2), strawberry puree (x3), agar-agar (x4), citric acid (x5), strawberry powder (x6), collagen hydrolyzate solution (x7) were used as prescription ingredients. As a result of calculating the program, the shares of prescription ingredients were obtained: x1 = 0.45; x2 = 0.24; x3 = 0.25; x4 = 0.016; x5 = 0.005, x6 = 0.05; x7 = 0.18. In this case, the goal function tends to the maximum, i.e. to obtain a product of high nutritional value. The data obtained made it possible to compose the recipe composition of enriched fruit-jelly sweets for the production of 1000 kg of product. The technological process for the production of sweets included sequentially performed operations that allow obtaining a product with a high nutritional value, the required content of biologically active substances and good organoleptic properties that meet the requirements of regulatory documents.
Mathematical model of a combined manipulator of a forest machine
Authors: Chernik D V , Chernik K N 
Published: September 2020

Abstract
Combined and articulated manipulators have gained immense popularity in various industries, including forestry. Thanks to its kinematic scheme that simulates the movement of a person’s hand, machines equipped with these manipulators are easy to master on an intuitive level and have a fairly large working area. When designing manipulators, there is a need for a preliminary determination of the geometric parameters of structural elements, which requires attracting additional labor resources from the production side, as well as attracting specialized, expensive programs. This article published the results of mathematical modeling of loading a combined manipulator. The developed mathematical model allows us to determine the geometric parameters of the manipulator design elements depending on the load capacity, maximum reach and other kinematic parameters of the machine. The graphs of the dependences of the height and width of the sections of the boom and secondary boom on the gross lifting torque and the maximum boom reach.
Fuzzy regression model with input and output Z-numbers
Authors: Poleshchuk Olga 
Published: September 2020

Abstract
The paper is devoted to the construction of a fuzzy regression model, the input and output data of which are Z-numbers. The coefficients of the regression model are crisp numbers. The definition of Z-number was proposed by prof. Lotfi Zadeh in 2011 for fuzzy information processing, the reliability of which is also fuzzy measured. In the paper the both components of Z-numbers are values of linguistic variables with the properties of completeness and orthogonality. Operations on Z-numbers are based not on classical fuzzy arithmetic, but on weighted fuzzy arithmetic, which greatly simplifies the operation, but at the same time, the original information features are preserved. The incoming information is formalized using weighted segments, based on which the distance between the initial and model data is determined. The optimization problem is solved with the condition of a minimum sum of squares of these distances, which allows to obtain unknown coefficients of the regression model.
Transient operating regimes modeling in low-power boilers of a high-temperature fluidized bed
Authors: Bondarev A V , Sarkisov S V , Tarasov V N , Vakunenko V A , Biryukov N A 
Published: September 2020

Abstract
The paper proposes a comprehensive solution to the issues of sustainable and high-quality operation of low-power boilers with a fluidized bed at public utilities. The techniques of mathematical modeling of stationary and transient regimes of operation are used, which is necessary for the correct selection and tuning of the controllers of the automated control system. A mathematical model of the change in temperature and concentration of combustible substances over time when burning solid fuel in a fluidized bed is presented. Dependences of changes in the main parameters of the combustion process are shown. Graphs of transient processes of changing the layer temperature over time during the application of disturbing effects during the combustion of coal and peat are given.
Modeling of a strategy for developing a lean organizational structure for managing a petrochemical enterprise
Authors: Barsegyan N V , Kudryavtseva S S , Ivanova L N 
Published: September 2020

Abstract
In the conditions of constantly growing technological and digital efficiency gap between domestic and foreign manufacturers, the problem of stimulating the sustainable development of the domestic industrial industry is becoming more and more urgent. A well-structured management structure based on a lean development strategy has a significant impact on improving the innovation level of industrial enterprises, since this process provides incentives for continuous improvement of enterprises’ activities and increasing their efficiency, which can be implemented through the introduction of lean production systems. The main factors influencing the efficiency of production processes and development when developing a strategy for implementing a lean management structure for a petrochemical enterprise are identified. When designing a lean governance structures in petrochemical plants, the factor “personnel innovative potential” is of paramount importance, because it takes into account the efficiency of the human component as the main control object and the source of modernizing the industry and, in addition, includes an innovative aspect that also requires consideration in the development of lean organizational structures, such as departments and divisions on innovation departments R & d departments, technological development, etc. within the enterprise or supply chain of petrochemical products, their competence and authority.
Dissipative mathematical model of heat transfer in channels with process intensifiers
Authors: Laptev A G , Farakhov T M , Lapteva E A 
Published: September 2020

Abstract
A mathematical model is considered and calculated expressions for the average shear stress and the average Nusselt number in channels with surfaces of process intensifiers (wire inserts, annular protrusions, etc.) are obtained. The average shear stress is found using the expression for the energy dissipation rate and the Deisler and Van Driest turbulent boundary layer model. As a result, an equation related to the pressure drop in the channel with process intensifiers was obtained. Using this equation, the Nusselt number is written for channels with heat transfer intensifiers, and the calculation results are given and compared with known experimental data for transformer oil and other media with high viscosity at Reynolds numbers from 200 to 3104. The resulting expression allows calculating the heat transfer coefficients based on the results of experimental studies hydraulic resistance. As a result, the terms and costs of designing or modernizing heat exchangers for various industries are reduced.
A method for data analysis in algebraic structures
Authors: Shlepkin Aleksei , Sabodakh Irina , Filippov Konstantin 
Published: September 2020

Abstract
Computational group theory investigates the arithmetic properties of algebraic structures. These properties may be utilized in development of algorithms for data analysis and machine learning. This direction is associated with the design, analysis of algorithms and data structures for calculating various characteristics for (mostly finite) groups. The area is interesting for investigation of important from various points of view groups that are important, the data about which cannot be obtained by manually. The present work was carried out in line with computer calculations in groups. Based on the concept of the group growth function, the concept of the group density function is introduced. The growth and density functions of finite simple non-Abelian groups of small orders are constructed. The question of recognizability of finite simple non-Abelian groups by the density function is considered. The problem of effective storage of finite group elements in computer memory using the AVL tree is investigated. Based on the AVL tree, a fast algorithm for enumerating all elements of a finite group is developed. With the computer calculations, the recognizability of two finite simple non-Abelian groups by the group density function is proved.
Subsidiary computations
Authors: Tsvetkov V Ya , Kozlov A V 
Published: September 2020

Abstract
The work objective is an examination of the subsidiary computations. The article describes the content of the subsidiary computations, which are associated with situational computation. The authors provide an analysis of linear or sequential computations being the basis for a comparison with the subsidiary computation. The article also introduces the computation situation concept, which is not used for stationary and deterministic computations. It is demonstrated that the necessity of the subsidiary computations occurs when changing the external environment and the computation situation. The importance of logical argumentation in the subsidiary computations is noted. The necessity to introduce the complementarity criteria for the subsidiary computations is noted. The subsidiary and centralized computations are alternative.