bluuebunny/crossref_metadata_2025_split huggingface dataset:
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

AbstractThe 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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

AbstractInformation 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

Abstract
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

Abstract
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

Abstract
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

Abstract
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

Abstract
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.