bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reliability assessment of emergency auxiliaries of an NPP using an additional steam turbine under various modes of its utilization
Authors: Aminov R Z , Yurin V E 
Published: November 2020

Abstract
Under complete blackout of a station, it is possible to cool-down the VVER-1000 type reactors using the energy of residual heat release of the reactors. The calculations from past works showed in the context of Balakovo nuclear power plant, that a single low-power steam-turbine unit by utilizing the energy of residual heat release from one reactor is capable to provide electricity for two VVER-1000 power units, including the cases when the first circuit in one of the units is depressurized. This work is a continuation of the investigation of the general-station reserve systems for nuclear power plants own needs. The effectiveness of the joint installation of an additional multifunctional steam turbine and a mobile general-station diesel generator was investigated taking into account the results of a large research of the causes for not starting diesel generators at nuclear power plants, conducted by scientists from the USA and Canada, according to which the interval of the percentage of their non-start ranges from 1 to 3%. It is shown that the reliability of such concurrent redundancy of the NPP’s own needs meets the IAEA requirements. Also in the work, the reliability of the developed emergency power supply system was investigated in the conditions of the additional steam turbine stop during the night off-peak hours of the electrical load. Research has shown that this is not acceptable for the accepted conditions from a safety point of view.
Thermal calculation and experimental corroboration of counter-flow tube-type evaporators and condensers of heat pumps operating on zeotropic mixtures
Authors: Usachev A P , Rulev A V , Yu Usacheva E , Shurayts A L 
Published: November 2020

Abstract
When using renewable heat sources that have limited volumetric heat capacity, for example, air, water, gases, the temperature of which changes significantly during cooling in the evaporator and heating in the condenser, execution of cycles for heat pumps operating on zeotropic mixtures, the temperature of which also changes, makes it possible to increase their energy efficiency. The paper proposes a technique for thermal calculation of counter-flow tube-type evaporators and heat pump condensers which use media with limited volumetric heat capacity as heat sources, and zeotropic mixtures as working substances. We carried out experimental corroboration of the proposed technique for thermal calculation of counter-flow tube-type evaporators and heat pump condensers, which confirms the validity of the developed mathematical equations of heat transfer in the “medium with limited volumetric heat capacity, i.e. propane-butane zeotropic mixture” system. Average deviation of experimental data from theoretical dependencies with a confidence level of 95% is 27.6%, which makes it possible to recommend them for use in design and operational practice.
A condition of reliability improvement of the system based on the fog-computing concept
Authors: Melnik E V , Klimenko A B 
Published: November 2020

Abstract
In this paper, the effect of the fog-computing concept, applied to the information and control systems, is considered. A special condition of the fog-computing application expediency has been developed. It has been proved that the system reliability improvement is reachable using the fog-computing concept, if the workload shifted to the fog nodes does not exceed the workload conducted by the transit data transmission. In this case the application of the fog-computing concept is expedient and useful. Some simulations, which illustrate the condition proposed, were conducted in this paper.
Mathematical model of the interaction of plasma with the inner surface of a hollow cathode in a vacuum plasma torch
Authors: Anshakov A S , Cherednichenko A V , Cherednichenko M V , Serikov V A 
Published: November 2020

Abstract
The analysis of the equation of energy balance on the inner surface of a hollow cathode enabled us to establish a decline in electric current in the cathode down to zero value, taking place due to the interaction of the electronic component of plasma with its magnetic field. A formula of the depth of plasma influx inside the cathode channel was developed. The spatial position of the active zone and the current density on the surface of the current transfer were determined using an experimental dependency.
Development of a conceptual model and methods for multi-agent state assessment of technogenic systems
Authors: Bugakova T Y 
Published: November 2020

Abstract
For geodetic monitoring of the spatial-temporal states of technogenic systems under the conditions of hazardous processes that are fast-moving in time, the speed of obtaining objective information and minimizing the human factor are important, which contributes to the timely adoption of the most effective solutions. This is possible by using modern digital technologies based on multi-agent systems, methods of intellectualization and robotization. Based on the analysis of the state of the geodetic monitoring problem, spatial-temporal states of technogenic systems, a conceptual model and methods of multi-agent state assessment are proposed, which will minimize the human factor and significantly improve the quality and speed of obtaining an active information function for timely management decisions in the context of fast-moving processes and emergency prevention.
On simulation of the photon wave function to explain the Young’s experiment and prospects for its use in quantum cryptography
Authors: Davydov A P , Zlydneva T P 
Published: November 2020

Abstract
The method developed in previous works for building the photon wave function in configuration representation is briefly described. The simulation of such function (wave packet) appropriate to femtosecond laser radiation, using the distribution of Gauss of photon momenta in the state of a single laser impulse is expounded. By other appropriate simulated wave function of photon the light interference in Young’s experiment is explained within the frame of quantum mechanics without the attraction of transition probability amplitudes used in approach of quantum electrodynamics. This allows us considering interference phenomena for photons and particles from the same basis of the quantum-mechanical principle of superposition employed to the wave function built in the configuration space. Using the building apparatus of photon quantum mechanics, the Malus law postulated in quantum theory is justified. The relevance of new experiments to study the interaction of quantum objects between themselves and the physical vacuum, which would reveal the origins of the mathematical description of quantum states using the wave function of these quantum objects, is substantiated. It is suggested that the ideas of constructing the wave function of a free photon in the coordinate representation can find relevance in the field of quantum cryptography.
Comparative analysis and experimental verification of simulation modelling approach in MATLAB-Simulink and SimInTech
Authors: Domakhin E A , SPopov N , Vilberger M E , Anibroev V I , Singizin I I 
Published: November 2020

Abstract
The paper considers a simulation modelling approach validity for the control system development of real objects. Two programs for research were used then experimentally validated. The experiment showed good repeatability between software and revealed the permissible limits for a simulation modelling approach use.
Solution of transport safety problems based on biometric systems with error-correcting coding procedures
Authors: Gladkikh A A , Volkov A K , Volkov A K , Damdam M A Y , Al-Mesri Ali S A 
Published: November 2020

Abstract
The paper considers models and methods for solving processing biometric data at the physical and channel levels. A classification of the parameters of such systems is given and those characteristics that play a decisive role in achieving the objective function in limited time intervals are distinguished from them. The work aims to analyze the possibilities of increasing the reliability of biometric devices at the channel level by using error correction codes. The practicability and necessity of error-correcting coding mean using the permutation data decoding algorithms capable of matching biometric identification adequately. Based on the results of statistical modelling of optical communication channels, the necessary and sufficient conditions for the application of permutation decoding tools for binary codes are determined. The problem of minimizing the memory size of the cognitive map of a permutation decoder is solved by allocating the permutation orbits and using the generating combinations of loops as indexes of the reference matrices. An efficient algorithm is proposed for finding a unique orbit number and the corresponding reference matrix when the receiver generates an arbitrary permutation of characters from the set of permissible permutations.
Application of theory of multi-agent systems for operational geodetic monitoring of technogenic objects
Authors: Knol I A , Bugakova T Yu , Rozhkova M V 
Published: November 2020

Abstract
The analysis of modern methods of geodetic monitoring of technogenic objects (TO) in geodesy is carried out in the paper. The information on the use of robotic devices in geodetic monitoring of technogenic objects is given. The application of the theory of multi-agent systems for the operational geodetic monitoring of technogenic objects is proposed. The concept of geodetic robot “georobot” is formulated as an intelligent robotic device capable of increasing the speed of obtaining data on the spatial-temporal state of technogenic objects in extreme conditions without human intervention, increasing the reliability of geodetic monitoring and reducing the risk of emergencies. To determine the flight path of the georobot, the categories of technogenic objects are analyzed and their mathematical formalization is carried out to a set of characteristic volumetric geometric figures. A comparative table has been drawn up containing information on the categories of technogenic objects, the geometric image of the object and the path of flying around.
Analysis of the harmonic composition of the rectified voltage at the asymmetry of the secondary system of windings with different turns in converter
Authors: Neyman L A , Linnik K S 
Published: November 2020

Abstract
The use of integrated transformer converters of the number of phases, in which the EMF phase system at the input of bridges is formed by the geometric addition of the EMF components of individual windings, expands the scope of application of DC voltage sources with ripple frequency. With the symmetry of the transformer converter of the number of phases included in the valve bridges, each ripple of the rectified voltage of the integrated rectifier contains m ripples of exactly the same amplitude and duration, containing the corresponding composition of harmonics. However, when designing such integrated rectifiers, there is a problem of ensuring an acceptable level of symmetry of the multiphase EMF system. This is due to the inability to implement the required ratios between the numbers of turns due to their discreteness. This paper presents studies of the analysis of harmonics of rectified voltage with an asymmetry formed by a secondary system of multi-turn windings for an eight-pulse rectification scheme.
Physical picture of energy conversion during cavitation
Authors: Porsev E G , Malozyomov B V 
Published: November 2020

Abstract
The results of theoretical and experimental studies of heat generators that convert electrical energy into heat with a high-energy conversion coefficient are presented. A hypothesis is proposed on the origin of a highly efficient transformation in the form of a second-order phase transition with a transition of water from the cluster state to the monomolecular state and vice versa.
Methodology for modelling stochastic optimization of innovative development of enterprises using probabilistic methods
Authors: Shanin I I 
Published: November 2020

Abstract
The article proposes the results of a scientific study based on the construction of mathematical models of stochastic optimization using probabilistic methods aimed at the innovative development of timber industry enterprises. The construction of economic and mathematical models is a necessary direction when forecasting various processes.The construction of stochastic optimization models based on economic and mathematical modelling makes it possible to establish a number of the most significant cause-effect relationships of technological, resource and effective indicators using formalization parameters, as well as determine the nature of the likely relationship between the indicators. The most relevant from a scientific and practice-oriented point of view for modelling the dynamics of technological and innovative development of an enterprise is the application of probabilistic methods using production functions.When applying production functions, in a scientific approach, many average indicators were used, taking into account various production and technological relationships of the production process, technological solutions and innovations. Based on the methodology of stochastic optimization in the construction of production functions in the process of economic and mathematical modelling, it is possible to form an adequate production function to build the necessary mathematical model and forecast scenarios of the dynamics of innovative development of enterprises.
Computer simulation of thermal expansion of the charge of liquid nitrogen in the process of heat load
Authors: Yerezhep D , Aldiyarov A , Sokolov D , Nurmukan A 
Published: November 2020

AbstractThe computer simulation model of the expansion of the liquid nitrogen charge during a heat load was created, and the Mises stress criterion was considered on the basis of theoretical and experimental data. The influence of the type of using temperature load was studied to generate calculated numerical data for creating fuel on liquid nitrogen. These studies are necessary for the formation of an additional numerical experiment to study the phase transition of liquid nitrogen to a gaseous state under conditions of a closed, and then sharply increasing (exponentially) volume, which is characterized as quasi-isobaric conditions.
Description of software for an automated control system for the technological process of thermal vortex enrichment
Authors: Gorovoy V O , Kondrat’ev V V , Kolosov A D , Kononenko R V , Konyukhov V Yu 
Published: November 2020

Abstract
The software description of the automated system for controlling the technological process of thermal vortex enrichment was carried out as part of a project to create a comprehensive resource-saving technology and organize high-tech production of carbon and silicon dioxide nanostructures to improve the properties of building and structural materials. The description of the software hardware complex consists of a description of its structure, a description of the software parts and their functions, methods and software development tools, the selected operating system, and tools that expand the capabilities of the application operating system. The composition and structure of software support the requirements of technical, informational and mathematical software.
Information system model for implementation and maintenance of stochastic control over a nonlinear object on manifolds
Authors: Kolesnikova S I 
Published: November 2020

Abstract
The paper presents a problem statement for a robust stochastic regulator synthesis based on the principles of control on manifolds, a solution algorithm of a new information system and its structure maintaining the synthesis algorithm for a stochastic discrete object. The object under study is presented as a system of stochastic, difference nonlinear equations. The mathematical tools of the classical method of analytical design of aggregated regulators are used, which were developed earlier for a deterministic nonlinear object with a complete description. The robust stochastic nonlinear regulator ensures the following characteristics of the control system: a) minimum deviation of the output variable; b) minimum dispersion of the target invariant; c) minimum average value of the control quality functional.
Description of the complex of technical means of an automated control system for the technological process of thermal vortex enrichment
Authors: Kondrat’ev V V , Gorovoy V O , Kolosov A D , Kononenko R V , Konyukhov V Yu 
Published: November 2020

Abstract
The description of the complex of technical means of the automated system for controlling the technological process of thermal vortex enrichment was carried out as part of the project to create a comprehensive resource-saving technology and the organization of high-tech production of carbon and silicon dioxide nanostructures to improve the properties of building and structural materials. The description of the complex of technical means was made taking into account the justification for choosing the structure of the complex of technical means, the description of its functioning, the main decisions on the placement of technical means, the rationale for the application and technical requirements for equipment, as well as the justification of methods for protecting technical means. Computer equipment and data transmission equipment were selected. The described set of technical means is necessary and sufficient to achieve the goal of creating an automated control system for the technological process of thermal vortex enrichment, namely, to carry out continuous technological control of the equipment and process parameters of the automated process control system of the thermal vortex enrichment technological process; process safety in the production of MD1; collection of data on technological processes and equipment operation, their processing, display and documentation; optimization of the technological process through the use of advanced visualization tools, modern management algorithms and analysis of accumulated technological information; minimize the impact of human factors on the processes of collecting and processing information about the technological process; automatic prevention of the development of emergency situations.
Control properties of steel by using subminiature eddy current transducers
Authors: Malikov V , Fadeev D , Katasonov A , Dmitriev S , Ishkov A 
Published: November 2020

Abstract
In the course of study, various properties of materials were determined using the developed measuring system. The study was conducted on pipes made of high-strength steel 08G2B, the strength category of which belongs to the K65 group. The type of high-strength steel 08G2B belongs to the category of steel with an ultralow carbon content, which makes it possible to study the properties of this material using the eddy current method. A miniature eddy current probe was used for the study. The probe consisted of a core and three coils. The core material is alloy 81NMA. The main parameter of the measurement system, which provides basic information about the object of control, is the signal given by the measuring coil of the eddy current probe. The study was based on samples with integrity defects such as cracks and holes. Besides, the results of the study simulating corrosion in the metal are described.
Electrical asymmetry level influence on quality attributes of an induction motor
Authors: Lavrenov E O , Temlyakova Z S , Vilberger M E , Toporkov D M , Temlyakov A A 
Published: November 2020

Abstract
The paper is devoted to the evaluation of rotor phase asymmetry level on induction motor operation quality. The problems and characteristic features of an induction motor asymmetric modes modeling, taking into account the saturation of the magnetic circuit are reflected. The modification of the classic mathematical model for currents and torque calculating in conditions of rotor circuit asymmetry is presented, and the results of numerical simulation of this mode are shown. Analysis of the distinctive features of the selected mode compared to the symmetric mode of an induction motor is performed.
Effective energy in the volume of an electromagnetic motor with a given configuration of the magnetic circuit
Authors: Neyman V Yu 
Published: November 2020

Abstract
The paper discusses the problem of generation of maximum energy in the volume of a linear electromagnetic motor with a given configuration of its magnetic circuit. It presents the relation between the energy generated in the motor volume and the linear motor dimensions, maximum induction in the operating air gap, constructive factor and the magnetic field forcing degree during the movement of the core. It is shown that the maximum energy in the motor volume significantly depends on the magnetic field induction and the magnetic field forcing degree. The example of calculation of the maximum energy in the volume of the electromagnetic motor with the moving core is considered for different degrees of the magnetic field forcing.
Industrial robot Ural 1 for the oil and gas industry
Authors: Zainagalina L Z , Mamedov B Kh , Ilyasov A A 
Published: November 2020

Abstract
Ural industrial robots have been developed for diagnosing oil and gas pipelines and inspecting reservoirs. The developed industrial robot is designed to collect information on remote objects of the oil and gas industry in difficult geographical conditions using sensors for various purposes. Monitoring the condition of pipelines and examining oil reservoirs for the presence of hydrogen sulfide without the direct involvement of a person will improve the safety of these operations and reduce the cost of their implementation. The article describes the design features, technical characteristics and main advantages of the developed industrial robots with an internal combustion engine and an electric motor.
Consistent location of seismic reflection pulse sources
Authors: Rabinovich E V , Turkin A S , Filipenko N Y , Shefel G S 
Published: November 2020

Abstract
The original algorithm for constructing seismic images using only unambiguous and structurally stable solutions of direct kinematic seismic problems is proposed in the article. The sequence of small linear boundary line sections obtained by the consistent location of several closely located seismic reflection sources is smoothed out to construct the reflecting interfaces of medium depth profile. The consistent location has many advantages compared to well-known seismic imaging technologies.
Design algorithm for a transport power supply device
Authors: Kuznetsov S M , Arshinov S A , Daudov I M 
Published: November 2020

Abstract
The article considers the synthesis of an algorithm for designing traction substations for electric transport, which takes into account such a complex issue as the reconstruction of existing traction substations. In addition, special attention is paid to the issues of deployment of traction substations when increasing power supply or extending existing lines, for example, urban transport.