bluuebunny/crossref_metadata_2025 huggingface dataset:
Research of the influence of ultrasonic oscillation on the drying of textile materials
Authors: Khmelev V N , Shalunov A V , Bochenkov A S , Nesterov V A , Terentiev S A , Tertishnikov P P
Published: November 2020

The article presents the results of experimental studies of the process of convective drying of textile materials under the influence of ultrasonic oscillation. Research is carried out in a drum type dryer (based on LG household dryer) at different drying air temperatures. Were subjected to drying: cotton fabric, polyester and synthetic fluff. The drying process was carried out without ultrasonic exposure and with ultrasonic exposure at a sound pressure level of about 150 dB. The efficiency of ultrasonic exposure on textile materials at the initial stage of drying is shown. It has been found that ultrasonic exposure provides: for cotton fabric, increasing the drying rate to 12–14 % / min at the initial stage of drying; for polyester, increasing the drying rate by 65 % / min at a moisture content of 0.9–1.0; for synthetic fluff, the drying time is reduced by 33–37 %, with increasing the drying rate up to 30 % / min at the initial stage of drying. Thus, it been shown that it is advisable to apply ultrasonic exposure to increase the efficiency of drying textile materials, especially synthetic ones.
Ultrasonic monitoring of early development of lower vertebrate embryos
Authors: Burlakov A B , Titov S A , Bogachenkov A N
Published: November 2020

In this paper, the scanning acoustic microscope is used for visualization of the lower vertebrate embryosin vivo. Compared to optical methods, high frequency ultrasonic imaging has a negligible effect on a developing organism, and chemical treatment of biological object is not required due to the high contrast of acoustic images and the deep penetration of ultrasound. A technique for continuous ultrasonic observation of a living embryo that grows in the immersion cell of the acoustic microscope is proposed and developed. Using this technique, it is possible to image the internal organs of the embryo, visualize the motion of the structural elements and estimate their velocity. The loach embryo (Misgurnus fossilis) at 11-12 stages of development was studied using the experimental setup based on the 50 MHz scanning acoustic microscope. The ultrasonic images of the yolk and blastula, animation of cell division and motion in the syncytial region and estimation of the velocity of the structural elements of the embryo were obtained by the developed method.
Investigation of parameters of Schottky diodes based on chromium silicides
Authors: Isaev M Sh , Gaibov A G , Eshkulov A A
Published: November 2020

In this work, the parameters of Schottky diodes obtained by sputtering chromium on silicon and annealed at 900÷1100°C. were investigated. Experimental studies of Schottky contacts based on silicides have an all-microscopic analysis of the physical and chemical properties of the layers and an analysis of the electrical behavior of the system. The Schottky model assumes that surface states are located on the border between the transition layer and silicon. Using measurements of direct and inverse volt-amperage characteristics (VAC), values of the height of the effective Schottky barrier, the rate of change in the height of the barrier, as well as the value of the density of surface states, the thickness of the transition layer were obtained and the tunneling process was considered. The temperature dependencies of electrical conductivity are given and the course of the curve is analyzed. The obtained VAC is explained by the model of thermionic emission of the Schottky theory. Height of a barrier to contact chrome-silicon silicide which is equal to 0.65 eV is determined, and the factor of ideality was close to unit. The number of steps required by the charge carriers to overcome the potential barrier is determined. It is described that the current transfer mechanism is associated with the presence of surface states at the interface, as well as the occurrence of lattice mismatch and the difference in thermal coefficients. Diode illumination by LED confirms the effect of surface states on VAC. An increase in the surface states of photogenerated holes is shown. It has been shown that the existence of surface states affects the change in the height of the potential barrier, the amount of bending of the zones, and also determines that the predominant transfer mechanism is a tunneling multistage mechanism.
Models of temperature fields and their influence on polymeric coating adhesion
Authors: Bondar K E , Laponov S V , Suleymanov D F , Shulaev N S
Published: November 2020

The article provides the results of the research into the high-frequency electromagnetic radiation influence on polyvinyl chloride based polymeric piping coatings as well as forecasting how radiation can affect adhesion. It also exhibits the improvement of materials efficiency leading to longer service and higher reliability of piping systems. A calculation method for temperature changes and distribution across the coated material under the influence of microwave radiation has been developed which is required to establish the most appropriate polymer treatment techniques.
Laue photographs for NaCl and LiF
Authors: Bamatov D M , Bamatov I M , Daudov I L
Published: November 2020

The aim of the work was to investigate the x-ray scattering from the crystal lattice planes and the reason why this interaction forms distinctive diffraction patterns in the crystals. An experiment was designed in order to take the Laue photographs of the diffraction patterns of two selected crystals NaCl and LiF. The experiments allowed to observe a direct critical link between the internal structure of the crystals and the reciprocal lattice. The work allowed to obtain an energy spectrum for gold with clearly visible L shell emission lines and two Laue Photographs of the following crystals NaCl and LiF were obtained accordingly.
Multispectral matrix silicon photodetectors with the IR range registration
Authors: Zhbanova V L , Parvulyusov Yu B , Solomatin V A
Published: November 2020

The paper presents a multi-layer digital camera matrix photodetectors modifications. Modifications are a matrix photodetectors two main types hybrid: spatial structure and multilayer. The matrix photodetectors issue current state with the registering images function in both the visible and IR range is considered in detail. Such well-known manufacturers photo matrices analysis is carried out. To obtain a multispectral image, it is proposed to introduce light-sensitive layers for the near and mid-IR ranges. The developed matrices patterns are presented that allow achieving a balance of each of the five channels (red, green, blue, near and mid-IR) so that the spectrum each selected range has the matrix surface equal share. A layers’ combination is also proposed that allows to apply them separately-a layer that will minimize the noise in this area and focus on the infrared region, and use the visible one as an auxiliary one. At the same time, to get a full-fledged image, you need to apply each pixel interpolation. The light-sensitive layers’ distribution principle in each pattern is described.
Internal resistance of batteries for storing electrical power harvested using piezoelectric nanogenerators
Authors: Bamatov D M , Bamatov I M , Daudov I L
Published: November 2020

The dependence of power transfer through a circuit on the internal resistance selected batteries. A practical way for calculating the battery property was suggested and using the method, the values for “internal resistance, power output, changes in the voltage and current” with the change in the loaded resistance were calculated for the three selected batteries with the purpose to store the electrical power harvested using piezoelectric nanogenerators. The results obtained showed that for the “Carbon Zinc” battery the internal resistance was of value of 0. 31 Ohms, for the “Motorbike battery” it was 0.82 Ohms, and for the “Green Cell” battery the value was the highest, reaching 12.02 Ohms. The results obtained inverse proportionality between internal resistance and power transfer and as a consequence, the power stored by the battery relative to its capacitance was affected.
Exploring the role of progressive web applications in modern web development
Authors: Magomadov V S
Published: November 2020

This paper explores such a Web development technology as Progressive Web Applications. It is explained what this technology is and the purpose of it. The paper also compares progressive web applications to other Web technologies that are closely related to them, such as responsive websites and native applications. It highlights the most important differences and similarities between them. Furthermore, the paper discusses the advantages as well as the possible limitations of this technology. Finally, it provides some thoughts on whether or not this technology is the best solution for the online presence of a business.
Determination of dV/dt and dI/dt characteristics for high voltage 4H-SiC Schottky diodes with different types of metal-polymeric packages
Authors: Rybalka S B , Kulchenkov E A , Demidov A A , Zhemoedov N A , Drakin A Yu , Zotin V F , Shishkina O A
Published: November 2020

The dV/dt and dI/dt characteristics for 4H-SiC Schottky type diodes with different type metal-polymeric packages have been studied experimentally. It is determined that experimental dV/dt values for 4H-SiC Schottky type diodes in large-sized and small-sized metal-polymeric packages type (TO-220, SOT-89, QFN, PQFN) are varying in interval of 753÷1087 V/ns. For the first for time 4H-SiC Schottky type diodes have been determined experimentally another important diode’s characteristics dI/dt which are varying in interval of 1.91÷4.00 A/ns for all diodes It is established that package’s size miniaturization not lead to characteristics degradation (dV/dt and dI/dt) during of impulse mode of operation that is positive factor for the for diode failure-free operation during of impulse mode.
Features of modeling the combustion processes of flammable liquids with high ignition temperature in FDS software
Authors: Pozharkova I N
Published: November 2020

The article describes the features of modeling the dynamics of fire during the combustion of flammable liquids, linked with dependence of the velocity of spreading along the liquid surface from a large number of factors. The method of computer simulation of combustion processes of flammable liquids with high ignition temperature is viewed via the Fire Dynamics Simulator software on the example of turbine oil. The influence of the linear velocity of flame spreading over the surface of turbine oil on the dynamics of temperature changes of the gaseous medium in the room is explored. The results of dynamic modeling of turbine oil combustion for cases of a simultaneously ignited area of the spilled flammable liquid and spreading of the flame over its surface from the ignition point with a calculated linear speed. The conclusion is made that it is expedient to use the described method for estimating the linear velocity of flame movement over the liquid surface when modeling combustion over large areas of flammable liquids with a high ignition temperature.
Single- and two-photon interference within the simulated photon wave function in coordinate representation
Authors: Davydov A P , Zlydneva T P
Published: November 2020

The main provisions of the construction of the single-particle wave function of a photon in the coordinate representation are expounded and its application to the description of single-photon interference phenomena is discussed. The connection between the concepts of electromagnetic field strengths used in quantum electrodynamics and the characteristics of wave packets in photon quantum mechanics is substantiated. For illustration, we consider the relationship between the structure of the photon wave function in coordinate representation and the polarization of photon in the formalism of quantum transition amplitudes. The meaning of the concept of linear polarization of a photon in the state of a wave packet is explained. The wave function is constructed in the coordinate representation of the state of two entangled photons at the exit from a nonlinear crystal by modeling the polarization vectors and Gaussian momentum distribution for each of the photons.
Application of Finite Element Analysis in medicine
Authors: Magomedov I A , Khaliev M S-U , Elmurzaev A A
Published: November 2020

The article discusses the use of the finite element method in medicine. Finite element analysis has existed for a long time, and its application can cover vast areas of various fields. Using this technique in medicine is not new, but there are some problems that still have to be solved. In the work Finite Element Analysis or Method is explained. Briefly explained the application of the tool in the fields not related to medicine. A literature review is conducted on the use of Finite Element Analysis in medicine. The usage of the technique in dentistry is covered. Disadvantages and advantages of the use of the Finite Element Analysis tool in dentistry is presented in the work.
“Green” method for monitoring the mineral composition of spring waters based on the results of double measurement of specific electrical conductivity
Authors: Vasyukov A E , Surinova K K , Zinoviev N R , Nikulina S N , Chudakova T A
Published: November 2020

The “green” method of conductometric determination of the double dilution coefficients has been tested according to the results of monthly measurements during the year of the specific electrical conductivity of undiluted and twice diluted underground water from 4 springs. The first coefficient characterizes the ratio of mono- and divalent cations and anions in the water under study, the second one characterizes the content of dissolved salts in mg-eq/dm3, which makes it possible to establish the hydrochemical type of the water under study. The technique can be classified as environmentally friendly since natural diluted distilled water serves as waste.
The electromagnetic wave amplification in thin superconducting film in non-linear mixed state
Authors: Golovkina M V
Published: November 2020

In this paper the interaction of electromagnetic waves with the moving fluxons in the thin superconducting film on the dielectric substrate is considered. It is shown that in the case of flux-flow described by the Larkin-Ovchinnikov model, the amplification of electromagnetic wave can be observed. In this case, amplification can be achieved when the fluxons velocity is less than the phase velocity of the electromagnetic wave. It is revealed that the thin superconducting film in mixed state demonstrated nonreciprocal properties for backward and forward waves. The results obtained in this work allow to create amplifiers based on cuprate superconductors.
Ultimate resistance law for turbulent Couette-Taylor flow from extended local balance approach
Authors: Balonishnikov Alexander , Kruchkova Julia
Published: November 2020

The article is focused on one of the ways to apply the generalized local balance turbulence model for Couette-Taylor flow. The ultimate resistance law can be expressed in terms of the Lambert W function, and its asymptotic behaviour at very large Taylor and Reynolds numbers can be easily obtain using the asymptotes of this function. Comparison with the recent theoretical approaches and some experiments are made.
Accident tolerant fuels to replace uranium dioxide
Authors: Alhmoud A Z , Kruglov V B , Kruglov A B
Published: November 2020

The thermal conductivities for the traditional fuel UO2 and for the Accident Tolerant Fuel (uranium Molybdenum alloy, U-10Mo and uranium silicide, U3Si2) are calculated and compared. Then the temperature distributions on these core reactor, namely on the surface of the rod and in the center line of the rod were determined. The calculation is carried out using MATHCAD program. The calculations showed enhancement of thermal conductivity of the Accident Tolerant Fuel as they increased linearly with increasing temperature, and reduction of their center line temperatures of the rods. Beside, their steep thermal gradient, which may reduce the induced heat stresses in the core of the reactor.
Observational statistics analysis of seismoelectric effects in a gas condensate reservoir
Authors: Potylitsyn V S , Kudinov D S , Maykov O A , Agrovichenko D V
Published: November 2020

The article considers the observational statistics analysis of seismoelectric effects of the second kind at the Bystryanskoye gas condensate reservoir in Krasnoyarsk Territory. The measurements were carried out by the passive method from 2014 to 2019 on one exploration profile. The authors obtained an averaged profiling curve. Its analysis showed that there exists the repeatability of measurement results, as well as the convergence with the results of mathematical modeling. The collected statistics on the observation points shows the possibility of this method application in carrying out industrial field work in conjunction with the standard seismic exploration.
Influence of temperature and phase transitions on cavitation in liquids
Authors: Golykh R N , Khmelev V N , Barsukov R V
Published: November 2020

The paper presents model of formation of cavitation in liquids taking into account influence of temperature and phase transitions. Analysis of the proposed model allowed us to establish that the evaporation and condensation processes of cryogenic liquid at the boundary of the cavitation bubble are the main factor that determines the influence of temperature on cavitation. The established more than 2-times variation of optimal exposure intensities at a small temperature change (no more than 25 %) indicates the need to develop a more advanced, highly sensitive to changes in acoustic load system for automatic dosing of input energy and maintaining the optimal exposure intensity. Taking into account the results obtained will allow creating systems for monitoring the erosion strength of materials and coatings operating in cryogenic liquid media at low temperatures.
Development of the quality assessment information system for infection control in penitentiary institutions
Authors: Dyuzheva E V , Vostroknutov M E , Ponomarev D S , Polishchuk V E , Sandalov I Yu
Published: November 2020

The article describes the quality assessment system for infection control in penitentiary institutions that was developed using a mathematical model based on analytic hierarchy process (AHP). The following parameters were chosen as indicators of infection control quality level: HIV, tuberculosis, incidence of other infectious diseases, compliance with sanitary regulations and the water quality. The reliability and adequacy of the research has been proved. Quality assessment of infection control is an important criterion for the successful development of effective measures aimed at the improvement of the epidemiological situation in penitentiary institutions.
The analysis of information security problems solved by clustering methods
Authors: Aidinyan A R , Tsvetkova O L , Gerasimenko A N , Kravets O Ja
Published: November 2020

The actual problem of information security is achieved by using a variety of methods and technologies. The level of information protection depends on the quality of the methods used. The article deals with information security problems, and provides a classification and analysis of clustering algorithms. The clustering methods considered during the classification process have certain advantages and disadvantages, the correct choice of which ensures their effective application in solving specific problems. Clustering methods k-means and k-medians in most cases give better results with the right choice of clustering criteria. These methods are simple, contain a small number of calculations, and avoid the problem of sensitivity to the initial choice of cluster centers. It also makes sense to use fuzzy clustering if cluster elements cannot be clearly assigned to one of the clusters.
Management of an organization in a difficult economic environment based on an information system
Authors: Barkalov S A , Lomakin M I , Mistrov L E , Morozov V P
Published: November 2020

The article provides a definition and describes the stages of implementation of integrated management, which is a further development of classical management, focused on ensuring the stable development of economic systems in the face of anomalous economic situations (pre-crisis, crisis, post-crisis). It is shown that anomalous economic situations lead to complication and expansion of the management subsystem functionality towards solving difficult formalized and poorly structured management tasks. Their solution presupposes the availability of appropriate information support integrated into the intellectual information system of decision support of integrated management, including methodological, program, technical, organizational support and personnel involved in the framework of integrated management. A description is given of the composition and structure of the management system implementing the integrated management, as well as the corresponding intellectual information system.
Improving the management efficiency of machine-building enterprises (on the radio industry example)
Authors: Vereschagina L S , Olhova L A , Vedyaeva E S , Romanova E V , Kravets O Ja
Published: November 2020

The article is devoted to research of problems of the mechanism development for the machine-building enterprises management (on the example of the radio industry corporations) in the process of vertical and horizontal integration. These problems include: the lack of a unified approach to understanding the content development process of the corporate governance mechanism of high-tech production businesses, the universally accepted methodology of diagnostics of corporate governance mechanism of knowledge-intensive scientific and industrial corporate entities, models of increase of efficiency of integration processes. The economic essence of the categories “knowledge-intensive corporate education” and “corporate governance mechanism” is clarified. An algorithm for developing a mechanism for managing integrated corporate entities in mechanical engineering has been developed. The study proved the positive effects of integration processes on the effectiveness of engineering corporations and determines the direction of development of the mechanism for managing knowledge-intensive corporate entities: vertical integration, horizontal consolidation of the relationships of participants in scientific and industrial corporate entities. The effectiveness of the development of the management mechanism of integrated research and production corporations of the radio industry is determined by quantitative and qualitative assessment of the effectiveness and efficiency of partnerships using a multi-factor system of generalizing and specific indicators. The theoretical and practical significance of the work consists in the classification of methods and tools of corporate governance, the development of approaches and principles for the integration of corporate structures, the possibility of using the proposed developments in the development of corporate governance mechanisms in mechanical engineering.
Fast optical signal filtering by means of amplitude and phase operators
Authors: Chkalova D G
Published: November 2020

The article is devoted to a new numerical method of fast optical signal filtering. It is a unique mathematical apparatus of amplitude and phase operators, which has no analogues among the classical methods. The main advantages of the method for optical signal processing are computational simplicity, the versatility of the approach for solving various kinds of problems, and the availability of a geometric and physical interpretation of transformations. The amplitude and phase transformation algorithm, as well as its modifications, are presented in the article. It is shown that the method can be applied both to analog signals and to discrete measurements of a certain signal. The generalization of the operator to the two-dimensional case allows it to be applied to the processing of signals given on a rectangular grid. Proposed algorithm allows to achieve a significant acceleration during solving the problem of signal filtering compared with traditional fast Fourier transform.
Analytical treatment of transport logistics business processes by the Process Mining technology
Authors: Popov A A , Masaev S N , Edimichev D A , Pomolotova O V
Published: November 2020

The purpose of the research is to analyze the business processes associated with goods movement through the warehouse of a transport company by the Process Mining method based on ProM software. This article describes the analytical treatment of the event log of goods movement through the warehouse of a transport company. A model of a business process based on an event log was built and analyzed. The result confirms the possibility of business processes analytical treatment based on the transport company’s event logs. Using this technology, you can analyze various logistics companies, identify errors in the processes and look for ways to eliminate them. The results of the research contain conclusions, recommendations, and options for further research of the transport company.
Models for evaluating the performance of complex information and communication systems
Authors: Lvovich I Ya , Lvovich Ya E , Preobrazhenskiy A P , Preobrazhenskiy Yu P , Choporov O N
Published: November 2020

Information and telecommunication systems are one of the key components of modern companies. The effectiveness of the company depends on their performance. The paper considers several approaches related to the assessment of information and telecommunication systems: probabilistic method, series decomposition method, worst case method, statistical test method. An algorithm for analyzing the stability of an information and telecommunication system when reversible and irreversible changes in parameters are observed is considered. The results of evaluating the performance of information and telecommunication system. The comparison of methods is carried out.
Mathematical model for optimizing distributed information systems
Authors: Mazalov A N , Yakovlev A V , Alekseev V V , Gaidashov I S
Published: November 2020

An approach to optimizing distributed information systems is discussed in this paper. An argument explaining the demand for such distributed information systems nowadays is presented as well. The topic is crucial because it is impossible to find an optimal solution due to the curse of dimensionality of an NP-complete problem. The problem of data distribution by nodes of a distributed information system was defined. A mathematical model for optimizing distributed information systems was developed to solve the problem. In Stage 1 an analysis of criteria optimization of resource distribution among distributed information systems was carried out. The following definitions were established in this paper: information entity, attribute of the entity, distributed database. From the perspective of distributing entities among nodes a distributed information system was determined. As a result of describing elements of the mathematical model, a function of information flows was obtained. The function deals with data flows during distributed query execution. Including certain restrictions, such as the prohibition of hosting one entity on different nodes, the problem of distributing entities among nodes is presented. It is established that the problem of distributing resources is related to integer programming which, by itself, is concerned with optimizing distributed database structures, where the objective function indirectly depends on the variable of distribution and presence of restrictions.
Software package for the implementation of bioinspired algorithms for the design of fault-tolerant control systems
Authors: Kovalev I V , Saramud M V , Testoyedov N A , Kovalev D I , Kuznetsov A S , Koltashev A A
Published: November 2020

The article considers a software package that allows you to form the composition of multiversion software for fault-tolerant control systems. The software implementation is based on a modified ant colony algorithm, which belongs to the class of bioinspired algorithms. The algorithm implements the search direction in order to minimize the cost of a program consisting of a set of modules. For each module, there are several versions of its implementation, developed within the framework of the multiversion programming methodology. The search direction is also implemented in order to maximize the reliability of the modular program in multiversion execution. The software implementation of the algorithm allows a number of experiments to be performed to obtain data that can be used to compare the performance of the standard and modified ant colony algorithms.
Automated system for monitoring and predicting the state of photoelectronic separators complex for processing agricultural raw materials
Authors: Usenko O , Pribylsky A
Published: November 2020

The paper proposes an automated procedure for assessing the actual state of photoelectronic separators in real time. Random process outliers over tolerance zones are proposed as the main controlled parameter. In contrast to traditional methods, several threshold levels are used to provide the flexibility of control and forecasting. Measurement of the amplitude and duration of the outliers of random processes over the tolerance zones helps to collect statistical samples, which become the basis for statistical models in the form of distribution law. The automated system makes it possible to identify the distribution law by classical methods if the samples are of sufficient statistical volume.
Ontological modeling of micro and macro architectures Co-Design of cyber-physical systems
Authors: Soldatov Grigory , Ruchkin Vladimir , Kostrov Boris , Ruchkina Ekaterina
Published: November 2020

For effective design and modeling of modern mobile cyber-physical systems, it is proposed to use the theory of ontology, which has a number of important advantages: conceptual modeling of the target area in order to find hidden relationships, conflicts and description of incomplete (indefinite) information through abstraction at the physical or digital levels of the system, support for different styles modeling; modern interface of a large number of applications with a hierarchy of menus or work windows based on its developed conceptual model; the ability to combine two database applications or knowledge bases with completely different schemes of incompatible information systems into a single information space. Shown the importance of modern very high and is rapidly increasing mobile cyber-physical systems is determined by their wide range of application: almost all socially significant sectors of industry, economy, social systems: smart healthcare, smart home, smart city, smart e- and m-government. It is noted that the requirement for effective collaborative design and modeling leads to unusual complexity and ultra-high demands, application parallelism and heterogeneity, distribution of intelligence, computing resources для services and workloads in the Internet of Thinks hierarchy too. Suggested for modern complex applications require ultra-high performance and/or ultra-low power consumption иcпoльзoвать the authors propose using heterogeneous computing platforms, designing processors with parallel management multiprocessor macroarchitecture and parallel microarchitecture processors using various types of parallelism and application-specific parallel equipment based on super large-scale integrated circuit 1879VM6Y with high-performance processor core NMC4 of new generation architecture VLIW / SIMD.
Digital technologies in the regional management information system
Authors: Rozhnov I P , Avramchikova N T , Maslova O V , Lapunova E V , Bezrucov M A
Published: November 2020

Basic concepts of the “Regional Management Center” of the Krasnoyarsk Territory organization, aimed at continuation of the digital transformation of the activities of the executive authorities and local self-government bodies of the Territory with digital technologies and platform solutions application in the spheres of public administration and public service provision, ensuring qualitative improvement of indicators of socio-economic development of the region, are proposed.
On the problem and algorithms for coordinated optimal management of production and material flows of an enterprise
Authors: Mezentsev Y A , Baranova N V , Pavlov P S
Published: November 2020

The paper presents the problem of controlling the input and output material flows of an industrial enterprise, supplemented by the condition for the choice of sales prices and adjusted in terms of the number of products sold. This economic and mathematical model finds optimal solutions for the management problem at enterprises, namely, the problem of forming a production program according to the criterion of the maximum net profit at the end of the planning period. In the constraints of the model, both production components and constraints on resources and the logic of input and output material flows are systematically taken into account. The considered model and the given control problems are investigated using a unified approach that allows working with logical conditions of any complexity and setting the corresponding formal optimization problems. The results of testing the algorithm on test data close to industrial (real) dimensions are also given.
Informativeness of visual models
Authors: Kudzh S A , Tsvetkov V Ya , Nomokonov I B
Published: November 2020

The purpose of the work is to study the informativeness of visual models. The article reveals the features of the visual perception of images. We described the factors that distort the concept of informativeness as an objective value. The article proves that the perception of visual images cannot be equated with the collection of information using technical devices. We described the content of reception, perception and apperception in visual perception of visual models or spatial images The article introduces a systemic model of informativeness, which shows that the use of pixels as image elements does not evaluate the informativeness, but evaluate the information volume of the image. In order to evaluate the informativeness of visual models, it is recommended to use a visual cluster model. The article introduces a system of key indicators to evaluate the informativeness in the information visual processing.
A strategic planning of a digital copy (an enterprise) as a task of control a dynamic system
Authors: Masaev S N , Vingert V V , Bogdanov A V , Salal Y K
Published: November 2020

The area of research includes control theory, dynamic systems, parameters of the external environment, mode, integral indicators, strategy. The general problem of assessing the state of large economic objects (enterprises) is revealed. There is no unified assessment a control of through strategic planning. The article proposes an integral indicator method for a unified assessment of the enterprise. The enterprise is formalized as a digital copy. The digital copy includes all business processes at any given time. The digital copy is presented as a multidimensional dynamic system. Dimension of multidimensional dynamic system is 1.2 parameters This allows you to estimate the modes operation of the enterprise in the normal mode and in the mode for control of strategic planning.
Complex geometry three-dimensional curvilinear grids construction for numerical flow calculations
Authors: Gorokhov M M , Korepanov A V , Tenenev V A , Blagodatskiy G A
Published: November 2020

The urgency of constructing spatial curvilinear grids in areas with complex geometry is formulated. An overview of the construction of two-dimensional curvilinear computational grids is given. The article describes the rationale for the fact that the methods described in the review cannot fully calculate the flow parameters in regions with complex geometry. A method for constructing three-dimensional grids for bodies with arbitrary surface geometry is described. The results of constructing a three-dimensional grid are presented using a hemisphere as an example. An estimate of the measures of non-orthogonality for the test case is given.
Research impact of queue choosing policy on macroscopic characteristics in multichannel non-stationary queue system
Authors: Korelin I , Porshnev S
Published: November 2020

A multichannel non-stationary queuing system model of stadium checkpoint system studied. Input flow of model is based on statistical information of visitors flows from football matches in the Russian Federation. An algorithm choosing the shortest queue for implementing a policy of choosing a non-random queue presented. Result of comparing different policies described for input rate like real ones. The result is substantiated by comparing the functioning of the stationary QS with different queue selection policies in 3 modes: underload, load, overload.
Information modelling of track geometry
Authors: Oznamets V V
Published: November 2020

The objective of this study is to substantiate a new method for modelling the railway track geometry. The method includes a new way of path measuring and the resulting method for modelling of track geometry. There can be two variants of track measuring with the new method. The first variant includes measuring only the lengths of line segments between the marked points. The second variant includes measuring lengths, angles and coordinates. The article describes the measuring technique and the modelling mechanism and compares the new method with the traditional one. The method is applicable for measuring and modelling any large spatial object such as a pipeline or a sea craft. The advantage of the new method is the efficiency of work and calculations. The modelling can be done on site using any portable computer.
Software model in nuclear power design and control
Authors: Povarov P V , Tuchkov M Yu , Danilov A D , Gusev K Yu
Published: November 2020

The paper deals with results of hardware-software complex application in nuclear power units design tasks and control. Critical analyses of existing information systems applied in the global power engineering was made. It was demonstrated that the main task, to be solved, was aimed at parameters monitoring and not processes control in complex. Moreover, all existing systems have distinguished functions resulting in high information load on operating personnel if there is no established managerial decision. Authors proposed the approach based on the power unit software model and respective mathematical simulation hardware for the operating personal support system development and nuclear power units facilities designing. A list of function for such systems was developed. It is demonstrated that the basis of functioning in technological process control tasks is the power unit simulation model enabling modelling under different operation modes. The power unit of the state-of-the art nuclear facility evolves a complicated technical system. For presentation of the power unit formal structure an oriented graph is used. Mathematical model of the power unit process flow diagram presents formalized record of the system digital and logic variables. The power unit model includes a distributed dynamic neutronics reactor core model, one dimension two-phase thermal physical model of processes in the main power unit systems, I&C model. The approach of the software model integration in the design freeze tasks is shown.
Architectural modeling of a software product for evaluation of labor inputs using practices of system engineering
Authors: Rebrin O I , Eremenko V I , Zakharov D A , Krasikov I I , Mizgulin V V
Published: November 2020

The present paper proposes a solution to the problem of improving the accuracy of cost estimation at the initiation stage of a project for the development of a software product, the main module of which is a knowledge-based mathematical module. The approach of used system modeling is described, aimed at simplifying the process of analyzing the complexity of the system and improving the accuracy of assessing labor costs. The result of the work is a validation of the proposed approach, performed on the comparison of the expert assessment, the obtained assessment after modeling the system, and actual labor costs.
Integration processes in industry: theoretical approaches and pestilence experience
Authors: Deberdieva E M , Frolova S V
Published: November 2020

The current article considers the evolution of the concept of “integration” and the empirical development of the theory of consolidation. The advantages, disadvantages, as well as outstanding representatives of the main scientific schools: federalism, neofunctionalism, communication theory, liberal intergovernmentalism and network approach, neo-institutionalism, social constructivism, legalist approach. The main hypothesis is the assumption that the postulates of the theory of the network approach currently most fully identify the integration processes in industry. The article presents the main forms and examples of the enterprise integration of various industries in the context of world experience, such as: machine tool building, power engineering, aircraft building, non-ferrous metallurgy, shipbuilding, oil production.
Computational approach for researching visitor flow dynamics at public venues and mass gathering events
Authors: Korelin I , Porshnev S
Published: November 2020

Visitor flow dynamics at public venues has been studied by using mathematical models of the non-stationary queuing system and discrete-event modelling. Computational approach for research visitor flows quantitative characteristics is described. The dependence of input rate from time in non-stationary queuing system model is like the dependencies of rate of visitors to football matches. Quantitative characteristics are waiting line length and waiting time (time spend in queue) from time for different parameters of the input rate and the service rate device. It is proven that the maximum values of the studied characteristics and the corresponding time values are described by deterministic functions that depend on the maximum intensity of visitor flow and the average service speed. The form of these functions is well described.
An ultrawideband indoor positioning system with distributed ranging between tags
Authors: Krasnov T V
Published: November 2020

The aim of the work is to develop methodologies based on ultra-wideband positioning to create systems for the mutual positioning of moving objects. For this purpose, positioning errors in ultra-wideband radio navigation in the presence and absence of a direct signal propagation line between the radio tag of a mobile object and a base station are shown in the article. In presence of difficulties, pseudorange measurements acquire a displacement error. The construction of positioning systems using the ranges between radio tags (interpersonal channel) is proposed in the article. Construction of schemes based on radio channel models of copper mines shows that there is no error in the displacement of the RFID tag range, which is defined as the sum of the ranges by the intermediate RFID tag. With a low speed of movement of an intermediate RFID tag and a high frequency of range measurements, the intermediate marker can be represented as a fixed base station. The broadcast format of RFID signals will allow avoiding collisions on the air.
Modeling the behavior of web crawlers on a web resource
Authors: Menshchikov A A , Komarova A V , Gatchin Y A , Kalinkina M E , Tkalich V L , Pirozhnikova O I
Published: November 2020

In this paper, we present a study of web-crawlers behavior depending on the web resource. We provide a simulation model of web-crawler which is necessary for web robots detection techniques and dataset generation for methods based on machine learning. We analyze differences of behavior among humans, common crawlers, malicious crawlers and demonstrate that their models can be used for behavior analysis. We show that malicious crawlers behave similar to common crawlers and their behavior can be simulated to obtain necessary datasets and traffic patterns for the further detection and protection against unethical crawling. Our results and observations can be used as a basis of comprehensive intrusion detection and prevention system development.
Local image processing in distributed monitoring system
Authors: Bekeneva Ya A , Petukhov V D , Frantsisko O Yu
Published: November 2020

In this paper an approach to local image processing in distributed monitoring systems is considered. The proposed approach makes possible to optimize traffic transmitted from monitoring devices generating images or video streams. Image processing, object recognition and identification are performed locally. Based on information received from all monitoring devices, including images, event logs are generated locally for their further transmission to the central data collection, processing and analysis unit. The method of local image processing was tested on the example of face recognition of people who took part in the experiment. Under various experimental conditions, it was found that the proposed method has a sufficiently high accuracy.
A software platform for constructing model-driven systems for primary data consolidation
Authors: Korobko Aleksei A , Korobko Anna V
Published: November 2020

The effectiveness and validity of decisions in all subject areas depend on the completeness and reliability of the information base. Despite the development of information technology, some part of data is collected manually. This is important for the tasks of updating normative references, recording results of observations and laboratory studies, and statistical reporting. The paper describes the authors’ approach to building typical model-driven data collection systems. The approach includes the original conceptual model, the order of building systems by forming a control model and a set of algorithms for the construction of the system. Theoretical results form the basis of a software platform for building typical model-driven systems for collecting and consolidating primary data. The paper describes the procedure of constructing a data collection system on the basis of the platform using the example of the Soil Condition Research System. The software platform provides the systematization of consolidated data and their consistent storage. In addition, the control model of the system is a formal description of its subject area and may be useful for exploring the data collected.
Similarity measure of agents’ ontologies in cohesive hybrid intelligent multi-agent system
Authors: Listopad S V , Kirikov I A
Published: November 2020

The work is devoted to the issues of building cohesive hybrid intelligent multi-agent systems that implement the following mechanisms for ensuring the joint work of heterogeneous agents: coordination of goals and agent ontologies, development of the problem solving protocol. These mechanisms are similar to the processes that occur in long-standing expert teams. In them, experts, interacting in the course of solving problems, exchange views, knowledge, take into account each other’s goals, establish formal and informal norms of communication. In the paper, in particular, a method for estimating the similarity of ontologies is considered, which is the part of the method for estimating the cohesion of agents of the hybrid intelligent multi-agent system. The estimation of cohesion is used by system’s agents as the interaction effectiveness criterion when making decisions about the need to converge goals, ontologies or correction of the interaction protocol.