bluuebunny/crossref_metadata_2025_split huggingface dataset:
Formation of a model of information technology platform for the development of foreign trade potential as the basis for the technological development of engineering enterprises
Authors: Belyakova Galina , Belyakov Sergey , Fokina Darya , Shpak Anastasiya 
Published: May 2020

Abstract
The research focused on formation of the model of information technology platform for development foreign trade potential among machine builders as the basis for the technological development of engineering enterprises, and the studding tasks and main components of an information technology platform. Formed model should take into account not only the trends and socio-economic level of development of states with different living and economic conditions, but also the specifics of machine-building enterprises and the features of their products. It is necessary to form a model of special information technology platform for in machine-building enterprises, taking into account integration features and transformational modernization of industry enterprises.
A model for forming the degree of influence of the counterparty when making managerial decisions in mechanical engineering
Authors: Barkalov S A , Kurochka P N , Kalinina N Yu , Polovinkina A I 
Published: May 2020

Abstract
We consider an arbitrary set of counterparties, united either in a social network or in the field of joint activities, for example, top management of an engineering company. It is required to build a rating for each participant based on the results of mutual evaluation of the participants of the association in question, when the significance of the counterparty’s assessment will depend on how it was evaluated by other participants in the association. To solve this problem, the interaction between counterparties was modeled in the form of a graph. For each vertex, its potential was determined, and for each edge of the graph, the flow along it. Based on these data, ratings were obtained from participants in the scientific and technical council of a machine-building enterprise. It is shown that using a similar algorithm, it is possible to obtain estimates of the significance of agents in social networks when conducting marketing research.
Distribution method of different types of vehicles on the objects of internal works of the machine building enterprise
Authors: Selivanov A V , Belyakova E V , Ryzhaya A A 
Published: May 2020

Abstract
The process of distribution of vehicles of the machine-building enterprise for purpose of delivering goods from warehouses located on its production site is studied. A combined method of distribution of enterprise transport was proposed taking into account the joint transport work of different types of vehicles, which planned for shift delivery of goods declared by main and auxiliary divisions and the variability coordinates of cargo unloading points. The recommended method allows adjusting the joint operation of various types of vehicles, in order to choose a rational option for their operation in the current shift. It is preferable to choose a final option that reduces operating costs and provides traffic control in shifts.
Methods for synthesizing adaptive control with reference models using adaptive observers
Authors: Botirov T V , Latipov Sh B , Buranov B M , Barakayev A M 
Published: May 2020

Abstract
The article presents simple algorithms for adaptive control of an object with unknown parameters, based on the use of an adaptive observer as a control device. The observer does not identify the object, but immediately adjusts it so that the outputs of the object correspond to the reference model.
Radio-optical line for SCADA systems with relay
Authors: Krasnov R P , Ostankov A V , Malyshev I I , Maximov D A , Kondusov V A 
Published: May 2020

Abstract
Hybrid optical-radio communication systems provide high-speed access within the “last mile” and can act as highly reliable broadband channels of SCADA software and hardware systems. They use optical channels as the main communication lines, and radio channels as backup, since the transmission quality of atmospheric optical channels is largely determined by weather conditions. To reduce the effect of atmospheric turbulence, it is proposed to use the option of spatial diversity with line-of-sight channels and containing a repeater. When the signal-to-noise ratio decreases in the optical channel below the selected threshold, switching to the radio link is to be performed. The paper provides the results of modeling the operation of a hybrid radio-optical line in SCADA systems, in which a new switching system for optical and radio-frequency channels using a repeater is proposed. The dependences of the outage probability of the optical channel and the system as a whole are obtained.
On implementation of an approximating k-ary GCD algorithm
Authors: Amer Ismail F. , Najajra Mohammed H. 
Published: May 2020

Abstract
In our paper, we investigate some implementations of an approximating k-ary GCD algorithm (AKA) for calculating the greatest common divisor of natural numbers for given A and B. This task has a great importance in the development of parameters for cryptographic encryption methods.

A post-publication change was made to this article on 9 Jun 2020 to correct the author names.
Mathematical and algorithmic support for the early detection process automation of potentially dangerous content in Internet resources
Authors: Schwarzkopf E A , Choporov O N , Razinkin K A , Yurasov V G , Mazalov Alexander N 
Published: May 2020

Abstract
A mathematical formalization of procedures for the process of potentially dangerous content early detection by the degree of user responsiveness to the content is proposed. In this regard, a methodology for determining the list of resources scanned during monitoring and ranking them according to the degree of user involvement is recommended. The corresponding average daily metrics of commentability, approval and replication in terms of the content unit of the resource under study are proposed. Registration of potentially dangerous content is planned to be carried out in comparison with regular indicators of dynamics popularity acceleration for analyzed content unit. The proposed software can be successfully used in monitoring the Internet space in the context of struggling with destructive content.
Software implementation of the conjugate gradient method for shared and distributed memory multiprocessor systems
Authors: Rein T S , Karabtsev S N 
Published: May 2020

Abstract
The article examines different approaches to parallelizing the conjugate gradient algorithms for shared and distributed memory multiprocessor systems. We use the standards of MPI and OpenMP libraries of the C programming language for parallel programming. Testing the algorithms was carried out on the HP BLc3000 supercomputer, which contains 392 Intel cores and the InfiniBand network. The article presents the test results – acceleration and efficiency of parallel implementation for each type of multiprocessor systems depending on the dimension of a system of linear equations and the number of parallel processes. We present short descriptions of parallelization methods and excerpts of the code.
Some approaches for determining isomorphism of semigroups of small order
Authors: Korabelshchikova S Yu , Melnikov B F , Melnikova E A , Zyablitseva L V 
Published: May 2020

Abstract
For a given set of graphs or graph generation algorithm, it is possible to determine a set of invariants whose computational complexity will be low, and this set will work effectively in solving the problem of determining the non-isomorphism of graphs on this set of graphs. We described and investigated in detail two invariants of semigroups, reducing them to invariants of graphs, and then compared the effectiveness of these invariants for algorithmizing the problem of determining the non-isomorphism of semigroups. The comparison results are given in the article.
Wavelet transform for the identification of P300
Authors: Bulanov V A , Zakharov A V , Khivintseva E V 
Published: May 2020

Abstract
The reliability of a newly developed algorithm for the identification of the P300 component of event-related potentials based on a continuous wavelet transform was investigated. The electroencephalogram records of one participant made by using a three-stimulus paradigm (a kind of the odd-ball paradigm) were analyzed. The accuracy of identification of certain wavelet types for the detection of P300 was from 76.32 to 86.84%. Thus, relatively simple algorithms for processing and classifying the electroencephalogram record signal show acceptable results in terms of the accuracy of identification of the P300 component of event-related potentials based on randomly selected data.
A study of the correctness of the execution of a class file with an embedded digital watermark in different environments
Authors: Sharikov P I , Krasov A V , Volkogonov V N 
Published: May 2020

Abstract
In this work, the authors set a goal of carrying out a complex study. Preparation of different types of environments and operating systems of different bit version is made. After that, preparation, creation, and embedding of a digital watermark in a class file of the program module written in Java take place. Creation and embedding of a digital watermark are carried out according to the method, previously developed by the authors and associated with the use of undocumented features of Java virtual machine. After all the steps, we execute the file on various platforms with different presets, and then we check if a digital watermark in a class file is nor overwritten nor destroyed and if the class file itself functions in the same way on all platforms. Among other things, the checks are performed to ensure that the digital watermark meets the previously defined criteria.
On an algorithm for generating inhomogeneous porous media
Authors: Egorov A A , Gavrilenko T V , Grigorenko V V , Shaitorova I A , Nazina N B 
Published: May 2020

Abstract
In the article, the results of the development of an algorithm for creating inhomogeneous three-dimensional porous media based on stochastic fractals are presented. The issues of estimating the parameters of porosity of the media are considered. It has been shown that the fractal dimension of porous media is preserved for any slice scales and the size of the fractal grid used to build porous media, as well as the fractal dimension of matrices and porous media depends on the binary filtration parameter that forms the given porosity by changing the ratio of matrices, open and closed pores, to the total sample volume.
Geo-integration bases of services generation for the Multipurpose aerospace system for forecasting monitoring of disasters
Authors: Alekseev O A , Perminov A N , Serebriakov V B , Razumova N V , Linkov A D 
Published: May 2020

Abstract
The article describes the principles for development of information services for disaster monitoring and forecasting within the Multipurpose Aerospace System for Forecasting Monitoring (MAKSM) of Natural and Man-Caused Disasters in Russia and the Commonwealth of Independent States in the context of the MAKSM main target tasks at the initial stage of its development and with reference to the status and functions of information services in the system. It defines the target tasks addressed by the services to implement the main information conversion of estimates of disaster precursor parameters into parameters of disaster forecasts. The article explains the geo-integration functional for communication of the services with monitoring data sources and the functional for thematic processing, data storage and presentation of forecast results to consumers. The authors describe implementation patterns of the geo-information functional of the services at the current stage of remote monitoring system development.
Improving the reliability of the results of automated forecasting of emissions in geotechnical systems based on the bifurcation approach
Authors: Dorofeev N V , Romanov R V , Grecheneva A V , Pankina E S 
Published: May 2020

Abstract
To improve the reliability of the results of automated forecasting of anthropogenic emissions into the geological environment, an adaptive algorithm for spatial and temporal information processing of geotechnical monitoring data is developed in this article. The algorithm allows us to assess the trend in the stability of the geotechnical system during the bifurcation. For early detection of negative changes and identification of mechanisms for assessing the transformation of the geotechnical system during the bifurcation period, the parameters of the data collection and processing are changed in the algorithm. These parameters change depending on the selected key zones of components of the geotechnical system, where tehnogenic emissions occur, and when the values of controlled parameters of the technical condition of construction objects exceed the limits.
Development of the formal model for the presentation of poorly structured and unstructured information
Authors: Rabin A V , Petrushevskaya A A 
Published: May 2020

Abstract
The article describes the tasks of data mining, data modeling, presents a classification of data models, and also develops a formal model for representing various types of weakly structured and unstructured information resources. The developed formal model for representing various types of weakly structured and unstructured information resources within the framework of the software environment represents the theoretical basis for creating tools for solving the applied problem of automatic analysis of documentation on paper and digital media for the subsequent cataloging of poorly structured information.
Authentication control algorithm for long-term keeping of digital data
Authors: Solovyev A V 
Published: May 2020

Abstract
The article is devoted to solving the problem of keeping the authenticity of digital data during long-term keeping in the digital economy. The study gives a brief description of the problem stated in the topic of the article. The existing methods of confirming the authenticity of digital data, their advantages and disadvantages are described. Definitions of authenticity, long-term keeping and other concepts and definitions are given. The article describes an algorithmic method for solving the problem of keeping of the authenticity of digital data during their long-term storage. An algorithm for inventory of electronic signatures is described, which is the key to solving the problem of authenticity of digital data using electronic signatures. An assertion is made that the proposed algorithm, which has been tested by practice, will solve the problem posed in the article. The prospects of practical application of the algorithm are considered.
Composite method of sewage treatment for chromium ion (VI)
Authors: Mostalygina L V , Kamaev D N , Elizarova S N 
Published: May 2020

Abstract
The sewage, containing hexavalent chromium, appears at the different productions, where the main component of technological process is chromic acid. The influence curve has been constructed showing the dependence of the value of the sorption of chromium ions (III) on native bentonite clay. Maximum degree of the treatment is 96.25 % (original concentration is 0.024 mg/ml, minimum degree is 37.63 % (original concentration is 0.481 mg/ml). All the values of residual concentration exceed maximum permissible concentration according to chromium ions. A composite method of sewage treatment of galvanic production for chromium ion (VI) by means of pre-transforming it to chromium ion (III) and adding of bentonite clay and ferric chloride (III) in model solutions has been studied. Ferrum ions after the treatment are not detected in the solution. Optimal mass ratio of metal coagulant to clay in both cases is 1:4000.
Model for calculating the characteristics of fuel injection and atomization in diesel when working on alcohol-fuel emulsions
Authors: Likhanov V A , Lopatin O P 
Published: May 2020

AbstractThe solution to the problem of air pollution can be the transfer to alternative mixed fuels based on alcohol with the specified physical and chemical characteristics of power engines installed on vehicles and running on oil fuel, which will significantly expand the raw material base for obtaining motor fuels. The mechanisms of crushing a drop burning in an open atmosphere are considered, taking into account the repeated crushing of an emulsion drop as a result of boiling of intra-phase water inclusions and the model of evaporation of the drop in the absence of intensive internal circulation, when the rate of fractional evaporation of each component is determined by its mass fraction.
Atmospheric dispersion modelling in ecological engineering problems
Authors: Ravshanov N , Akhmedov D , Kravets O Ja 
Published: May 2020

Abstract
The applied problems of hydrodynamics, heat and mass transfer often claim the use of numerical solution techniques in curvilinear coordinates. Such an approach is quite natural and common for flows modelling, particularly in atmosphere dynamics. The paper deals with development of atmospheric dispersion model and numerical algorithm using approximations in curvilinear coordinate systems. The approach allowed significantly simplifying the formulas and reducing the amount of computations during experiments on forecasting the air pollutants concentration nearby existing industrial plants.
Phytotoxic properties of electrically-cleaned oil-contaminated soils (the use of Lepidium sativum L. biotest)
Authors: Shulaev N S , Pryanichnikova V V , Kadyrov R R , Bykovsky N A , Damineva R M , Ovsyannikova I V 
Published: May 2020

Abstract
The changes in the properties of contaminated soil during electrochemical cleaning is very important. The results of research of phytotoxicity of soil contaminated with oil and mineralized formation water after electrochemical treatment are presented in this paper. A biotesting methodic with Lepidium sativum L. allowed to do complex assessment of the hazardous properties of contaminated soil. Lepidium sativum L is one of the most useful test object because of its high responsiveness to the presence of pollutants and ability to quickly germination. The most presentative parameters of this methodic are the percentage of seed germination and the total length of seedlings (sum of underground and aboveground parts length). A statistical analysis of the experimental data was carried out too.
Methods of computer thermodynamic analysis of chemical reactions in ecological systems
Authors: Mileshko L P , Telesh A D , Dmitrieva I A , Borisova A A , Sakharova O N 
Published: May 2020

Abstract
The technique for constructing a thermodynamic model of chemical transformations that occur in ecological systems, which can be used to study the course of ecology, is proposed. The information necessary for students studying environmental disciplines for the independent implementation of thermodynamic calculations is presented.
Granular nitrogen and nitrogen-potassium fertilizers containing sulfur from the spent acid mixture of nitrocellulose production
Authors: Fazullin R Kh , Khalitov R A , Khuziahmetov R Kh , Matuhin E L , Fazullina A A 
Published: May 2020

Abstract
In the production of cellulose nitrates, waste is formed of mixtures of sulfuric and nitric acids. Regeneration of these mixtures involves large capital, energy costs and emissions of toxic substances in the air. To solve the environmental problem and improve the efficiency of nitrocellulose production, a method for obtaining granular nitrogen and nitrogen-potassium fertilizers with a sulfur content from spent acid mixtures has been developed. Six variants of fertilizer compositions from the spent acid mixture of nitrocellulose production and two samples of a simple salt mixture with an elemental composition identical to the composition of two samples from spent acids were obtained at the laboratory facility. A complex of studies of the obtained granular fertilizers without adding binders was carried out. To improve the quality characteristics of the granulated fertilizer, repeated preparation of fertilizers with the addition of bentonite clay to the salt mixture before granulation was carried out. As a result, strong, moisture-resistant granules of nitrogen and nitrogen-potassium fertilizer with a sulfur content with low acidity and high bulk density were obtained. The qualitative characteristics of granules obtained from the spent acid mixture showed better results in all experiments, compared to samples of a similar elemental composition obtained by simple mixing of salts.
Reactive power balancing transformers in control systems for electric drives of direct and alternating current
Authors: Sidorenko E V , Kozhin A S , Danilov A D , Burkovsky V L , Burkovsky A V 
Published: May 2020

Abstract
The features of the application of the balancing transformers with artificial switching as regulated power sources of the process plants are considered. The proposed approach makes it possible to convert AC to DC to supply the load and simultaneously generate reactive power of a capacitive nature, which is aimed at meeting the current Russian and foreign standards for electromagnetic compatibility of the consumer with the supply network. The characteristics obtained as a result of computer simulation in the MATLAB Simulink environment and its SimPowerSystems application confirmed the main positive features of compensation converters. It is shown that the main advantage of controlled compensation converters is the possibility of creating a frequency-controlled asynchronous electric drive with separate frequency and voltage control, which will significantly improve the energy characteristics of an asynchronous motor by reducing losses, increasing the service life of insulation, and significantly improving electromagnetic compatibility.
Wildfires and the spread of smoke from forest fires in the Krasnoyarsk territory in summer 2019
Authors: Gosteva A A , Yakubailik O E , Shaparev N Y 
Published: May 2020

Abstract
Forest fires in the Siberian regions of Russia received significant attention in the media and social networks in the summer months of 2019, much more than in previous years. There was an impression of a significant increase in their number and area. However, satellite monitoring data showed that this is just half the truth. The forest areas covered by fires were indeed significant, but at the same time comparable in values with a number of previous seasons. And a strong increase was not observed. Moreover, a significant part of the summer period in the territories where firefighting is carried out (firefighting zone), the area of fires was about half as much as in the previous year. Our research has shown that, most likely, the reason for the increased attention to this topic is associated with significant smoke from forest fires in the territory of Siberia due to unique meteorological conditions such as the distribution of areas of high pressure, lack of precipitation, and so on. This hypothesis has been confirmed by the results of analysis of the spatial and temporal distribution of the ultraviolet aerosol index calculated from the data of OMPS instrument of the Suomi-NPP meteorological satellite.
Methods for detection of antibiotics in urban wastewater
Authors: Abramova A A , Isakov V G , Grakhova E V , Nepogodin A M 
Published: May 2020

Abstract
This review provides analysis of existing methods for detection antibiotics in wastewater. Special attention is paid to the classification of methods for the detection of antibiotics and the possibility of these methods during antibiotics formation with separate components of wastewater complex compounds. According to the classification and a review of detection methods, preference was given to the analysis of the antibiotic content in dust on a solid-state polarograph, analyzing a sample of the solution using a KORIAN-3 analyzer, and differential spectroscopy.