bluuebunny/crossref_metadata_2025_split huggingface dataset:
Performance Analysis of Full-Duplex NG-PON2-RoF System with Non-linear Impairments
Authors: Ahmed Abdulnabi Mohammed , Kadhim Saad Wasan , Hamza Bashar J. 
Published: May 2020

Abstract
The motivation of this study springs from the need of exploiting the advantages of high data rate and increased mobility of the transmitted signal in the Next Generation Passive Optical Network stage 2 (NG-PON2) incorporated into Radio over Fiber (RoF) system. Nonetheless, such system is prone to degradation due to the nonlinear effects, namely, the non-linear impairments. Accordingly, this study suggests a design for a full-duplex NG-PON2-RoF system and it investigates the impact of the nonlinear effects on the performance of system, such as; Self-Phased Modulation (SPM), Cross-Phase Modulation (XPM), and Four-Wave Mixing (FWM). However, these effects would result in a significant data loss in Time and Wavelength Division Multiplexing-Passive Optical Network (TWDM-PON). To achieve the intended purpose of this investigation, both the performance of the suggested system and the nonlinear effects of SPM, XPM, and FWM are measured with reference to the qualitative parameters, such as; Bit Error Rate (BER), Q-Factor, Power link Budget, and the Eye-diagram. The results show that the system performs efficiently; however, in the presence of the nonlinear effects, the performance of the systems degrades significantly affecting the signal quality. It is worth noting that the FWM effect yields the most negative impact followed by the XPM, and the SPM effect yields the least significant impact on the system. Also, the system yields the capacity of transmitting range of 20-100 Km, and it results in data rate of 40-80 Gbps. The proposed system is simulated using the software Optisystem 15.
Oscillistor-based force sensor
Authors: Cheredov Alexander I. , Shchelkanov Andrey V. 
Published: May 2020

Abstract
The development of an oscillistor based force sensor with a frequency output is introduced. Sensor can operate in a wide temperature range from room to cryogenic. Experimental studies were carried out at temperatures of 77 and 295 K. Force sensor sensitivity is 0.9 kHz/N in the force range (0–10)N at temperature 295K. A decrease temperature to 77K leads to increase sensitivity to 15 kHz/N. The design of the oscillistor based force sensor is presented.
Autonomous navigation data integrity monitoring of satellite radio navigation systems based on residual method
Authors: Ivanov A V , Boykov D V , Trapeznikova O V , Pudovkin A P , Trapeznikov E V 
Published: May 2020

Abstract
Statistical computer modeling is implemented to analyze an autonomous system for navigation data integrity monitoring of satellite radio navigation systems using the measurement residual summation method in a sliding window. The analysis is made for integrated optimal information processing algorithms obtained by the methods of the optimal estimation Markov theory. Algorithms are generated for the vertical channel of the navigation complex, which includes an inertial navigation system, signal reception equipment from satellite radio navigation systems, and a barometric altimeter. The possibility of detecting unreliable data in using different measurement residuals, as well as depending on the size of the sliding window, is investigated in the modeling process.
Diagnostics features of technical condition for inking unit drive of printing machines
Authors: Kulikov G B , Vinokur A I , Petrov V P , Varepo L G , Belyaev P S 
Published: May 2020

Abstract
The paper considers approaches to assessing the technical condition of the inking unit drive of printing machinery in the work environment. As the main diagnostic feature, it is proposed to use the noise spectrum, created when working with inking systems. Reasons for noise of inking systems are considered. To create a mathematical model of sound radiation by quill cylinders of inking system, it is shown that behaviour is described by oscillation equation of tubular girder. Theoretical research has shown, there is a possibility in principle to use the noise spectrum emitted by the inking system to diagnose the technical condition of its drive. To improve the accuracy of diagnosis, it is proposed to use neural network technology of image identification.
The techniques analysis of the heterogeneous modified polymer materials parameters detection
Authors: Nagornova I V , Doronin F A , Varepo L G , Rytikov G O , Evdokimov A G , Nazarov V G 
Published: May 2020

Abstract
The comparative analysis of the most popular techniques features (SEM, EDS, XPS, FTIR) applied for the quality monitoring of the polymer materials modification process is carried out as exemplified by the both 3D-microfluidics and flexible printed electronics substrates manufacturing. The typical errors at the both microstructure and composition instrumental analysis of the modified heterogeneous near-surface layer of the polymer material are listed. The reasonability of the cyclic chemical as well as morphological statistically significant technique of the date acquisition accompanied by the source generation signal gradient variation is shown. The developed general algorithm of the polymer modification process instrumental monitoring is presented.
Influence of parameters of the operating system on process speed backup of digital archives of printing industry
Authors: Proskuriakov N E , Yakovlev B S , Arkhangelskaia N N , Trapeznikov E V 
Published: May 2020

Abstract
Results of pilot studies of comparison of process of backup on the Windows and Linux operating systems are presented. Experimental and analytical means revealed the key parameters influencing backup process speed. As showed a research, the most significant parameters are the form of the interface of the software and type of the operating system. Also the limit at which the speed of copying of data remains rather balanced was set. The research showed that “direction” of copying of data is also very important. The software capable to make backup in the environment of operating systems Windows and Linux was developed.
Application of the graphical computer simulation methods to determine the optimal settings for gearing machines
Authors: Safarov D T , Kondrashov A G 
Published: May 2020

Abstract
The article describes an example of the practical application of graphic computer simulation methods to determine the setup parameters of gear-broaching machines. The adjustment parameters found using computer simulation methods provide a favorable distribution of lateral clearances to achieve the design positions of the total contact spots along the sides of the valleys of the gears. The determination of the adjustment parameters consists in imitating the process of gearing which results in 3D models of bevel wheels. The troughs of the interacting 3D wheel models are dissected along the inner, middle and outer cones. Graphic run-ins were performed for the side profiles of the wheel cavities along the length of the tooth. The graphs of changes in the lateral clearances of the tooth tooth profiles are constructed and the best position of the extrema in the middle part of the side surface of the tooth teeth is selected. Thanks to the application of graphical modeling methods, it becomes possible to exclude from the total adjustment error the errors of parts and moving machine parts that are individual for each gear-broaching machine.
Analysis of expression for determination of specific capacitive conductivity of power lines and refinement of calculations of earth fault currents in networks with isolated neutral
Authors: Bubnov A V , Barskov V V , Kirichenko A N , Schekochikhin A V , Malgin G V 
Published: May 2020

Abstract
Topic relevance is due to necessity of the correct mathematical expressions during the calculation of constants of equivalent circuit of power supply system, including the overhead transmission lines. Research purpose is the allowances thanks to which formula for capacity admittance calculation and of ground fault current in electrical grids with insulated neutral determination were deduced and made common use. As exemplified by numerical computation accepted allowances can lead to significant error (more than 15%), for example, during the determination of single phase-to-ground fault current in electrical grids with insulated neutral.
Using system analysis methods to search for coolant leaks in order to develop an automated information system for dispatch control of a heat generating enterprise
Authors: Chebanenko E V , Gritsay A S , Khamitov R N , Kuznetsova O P , Makarov V V , Florensov A N 
Published: May 2020

Abstract
The modern variety of methods for diagnosing the condition of a heat conduit requires a systematic approach and structuring. The methods classification based on the IDEF0 methodology for analyzing the technical conditions of the pipeline and the requirements for their implementation are proposed. Modern methods and technologies for searching coolant leaks are considered., the use of which is possible outside of hydraulic tests and changes in transportation technology. The proposed options for expanding existing software and hardware are considered and trends and prospects for their future development are identified.
Calculation And Simulation Of Slow-Moving Linear Magnetoelectric Drive Of Single-Stage Piston Compressor
Authors: Tatevosyan A A , Zaharova N V 
Published: May 2020

Abstract
The paper proposes an approach to the creation of an energy-efficient slow-moving linear magnetoelectric drive of a long-stroke single-stage piston compressor. The problem of optimal design of the magnetic system of the magnetoelectric motor of reciprocating action satisfying the criterion of the maximum of the developed electromagnetic force while ensuring the minimum mass of the active materials used is solved. A mathematical model for calculating the dynamics of a linear magnetoelectric drive is presented and the results of modeling dynamic starting characteristics are presented.
Features of the structure of the melt, crystallization conditions and the allocation of the main and excess phases during the modification of the nickel alloy
Authors: Filippov Yu O , Eremin E N , Mukhin V F 
Published: May 2020

Abstract
The aim of the work is to study the kinetics of crystallization of melts with complex additives. Studies have shown that microalloying alloys with complex additives leads to a change in the structure of the melt, crystallization conditions, and the release of the main and excess phases. These changes consist of a decrease in the crystallization interval of the alloy due to an increase in the solidus temperature, an increase in the rate of growth of the solid phase in the initial period of crystallization, a replacement of the mechanism of crystallization of carbides, and an increase in the temperature at which the precipitation of eutectic and hardening phases begins.
Investigation of the properties of hardened steels during cutting based on the thermomechanical approach
Authors: Krutko A A , Sedykh D A , Vorobiev A A , Badamshin A M 
Published: May 2020

Abstract
The analysis of widely used dependencies for determining the mechanical characteristics during steel cutting is given. Based on the description of the scheme of the deformation zone when turning hardened steels, the laws of hardening and softening of the processed material are determined. It was revealed that the temperature, which leads to the localization of a part of the deformation in a narrow region of the chip formation zone, significantly affects the change in the properties of hardened steel during cutting. To describe this dependence, a thermomechanical approach is used that takes into account dynamic factors and the mutual influence of temperature and yield strength. The calculated values of shear stresses and temperatures are compared with experimental data.
Possibility of Decrease in a Level of Data Correlation During Processing Small Samples Using Neural Networks by Generating New Statistic Tests
Authors: Ivanov A I , Bannykh A G , Lozhnikov P S , Sulavko A E , Inivatov D P 
Published: May 2020

Abstract
Statistic tests created in the 20th century may be mapped with some equivalent artificial neurons. As a result, a network of dozens of artificial neurons that combines dozens of known statistic tests may be used for the validation of the normality hypothesis. The quality of solutions made by a neural network depends on a number of used neurons (tests). This tendency gives rise to the task of creating new statistic tests (neurons) that first and foremost require low correlation of their decision with known tests. The paper presents a forecast of attainable confidential probabilities for the validation of the normality hypothesis for a small sample of 21 tests in a network consisting of 21 artificial neurons, where each one is mapped with one traditional statistic test. When new tests are used (that should be created in the 21st century), the correlation of data is expected to lower by far, which should allow an approximately 10-fold decrease in a number of error probabilities.
Influence of parameters of adaptive control system on vibratory drilling efficiency
Authors: Ivanov I I , Larkin A A , Pleshcheev I I 
Published: May 2020

Abstract
One of the necessary conditions of ensuring the quality of deep hole drilling during manufacturing pieces from hard-to-machine metals is chip control. It can be ensured by applying harmonic oscillations to a drill bit in the direction of rotation axis. One possible way of maintaining such vibrations is to use a vibratory drilling head which contains an elastic element. This element allows axial displacements of the tool. If stiffness of the elastic element and the machining parameters are chosen correctly, self-actuating of axial vibrations of a drill bit in compliance with regenerative effect may occur. It is advisable to add control response, which is determined in the feedback loop, to this mechanism because of the significant damping in the cutting zone. The control response maintains the required process characteristics to ensure chip control. The algorithm of vibratory drilling dynamics adaptive control has been examined in this paper. The additional impact, which is proportional to axial speed of the drill bit, is supposed to be made on the vibration system according to this algorithm. The feedback gain is determined in the adaptation loop comparing the current value of peak-to-peak displacement and its target value. The dynamics modeling of closed loop non-linear system “elastic system-machining process-control system” has been carried out. The graphs of vibratory drilling integral characteristics plotted against processing characteristics and vibratory head parameters have been presented in this paper. These graphs are based on the multivariant modeling. The influence of the adaptation algorithm parameters on the quality of vibratory processing has been also studied.
Construction of hybrid intellectual monitoring and decision-making systems
Authors: Juraev Z Sh , Muhamediyeva D T , Sotvoldiev D M 
Published: May 2020

Abstract
The development of algorithms for constructing hybrid intelligent monitoring and decision-making systems, optimization of problem solving with fuzzy initial information, analysis of the correspondence model of complex difficult to formalize processes is considered. The main difference between the proposed development and the traditional ones is the use of modern intelligent information technologies for the development of algorithmic tools for constructing hybrid intelligent monitoring and decision-making systems.
Interpolation of experimental values for working parameters of a construction machine in the data space of an arbitrary dimensionality
Authors: Korytov M S , Shcherbakov V S , Titenko V V , Pochekuyeva I E 
Published: May 2020

Abstract
A technique has been developed for interpolating the experimentally obtained scattered data using radial basis functions, which can be used to study the constraints of kinematic, power, energy, economic and other parameters in construction, road and hoisting-and-transport machines, as well as their working patterns. The technique consisting of two computational steps arranged as two separate algorithms allows the design and machine working process parameters to be optimised. The technique can be used for the range of machine parameters with an arbitrarily large dimensionality. For the first time, detailed block diagrams of algorithms are presented for interpolating scattered data using radial basis functions. At the first stage, the weighting factor determination is performed for the radial basis function method in each experimental point of scattered data. The second stage involves the actual interpolation or extrapolation of the function value at a given point with arbitrary coordinates. The developed methodology allows rigid interpolation of scattered data, such as the field experiment values of various working parameters for the construction, road, hoisting-and-transport machines and their design parameters. The data space dimensionality for the experimental points is unlimited and can be arbitrarily large.
Application of the theory of fuzzy sets for a qualitative analysis of mathematical models
Authors: Muhamediyeva D T 
Published: May 2020

Abstract
The article discusses the estimation of fuzzy regression parameters when specifying various membership functions, since the effectiveness of the least squares method dramatically reduces when a number of prerequisites for its use are violated, in particular, when the sample being processed contains observations that are poorly consistent with the others. In these cases, one can use estimation methods that are less sensitive than the least squares method to specification errors and allow one to obtain so-called fuzzy estimates. Among such methods is the method of smallest modules, the implementation of which leads to the problem of linear programming.
A generic algorithm for the identity problem in finite groups and monoids
Authors: Rybalov Alexander 
Published: May 2020

Abstract
Kapovich, Myasnikov, Schupp and Shpilrain in 2003 developed generic approach to algorithmic problems, which considers an algorithmic problem on “most” of the inputs instead of the entire domain and ignores it on the rest of inputs. This approach can be applied to algorithmic problems, which are hard in the classical sense. The problem of checking identities in algebraic structures is the one of the most fundamental problem in algebra. For finite algebraic structures this problem can be decidable in polynomial time, or hard (co-NP-complete). In this paper we present a generic polynomial algorithm for the identity problem in all finite groups and monoids with elements of period greater than 1. The work is supported by Mathematical Center in Akademgorodok, the agreement with Ministry of Science and High Education of the Russian Federation number 075-15-2019-1613.
A neural network model for short-term PV - energy forecasting
Authors: Tyunkov D A , Gritsay A S , Rodionov V S , Sapilova A A , Blokhin A V , Paltseva N A 
Published: May 2020

Abstract
Nowadays, energy consumption in the world is growing becomes relevant to solve the problem of replacing traditional sources with alternative ones. The solution to this problem is impossible without preliminary forecasting of energy production by alternative sources. In this paper, we consider the problem of solving the problem forecasting electric energy by solar power plants, considering the influence of external factors (weather conditions) using a model implemented on the basis a neural network.
Representation of data analysis results in multidimensional parameter space
Authors: Zykin Sergey V. 
Published: May 2020

Abstract
In data analysis, presenting the boundaries between the classes of objects is considered a minor issue in most cases. However, the subsequent use of the analysis results (for example, in diagnostic tasks or in the acquisition of the necessary object properties by controlling the parameters) should be based on the boundaries delineation and the accuracy of their description. This underlines the need to develop and use universal methods for presenting the data analysis results. This paper considers the data model for applied decision support systems, in which one of the components is graphic data, i.e. domains in multidimensional space, bounded by general surfaces. A mathematical model is proposed, which outlines the range of possible graphic applications rather strictly. The paper proposes a meaningful approach to describing the boundaries delineation error. The material considered can serve as a basis for technology of data analysis results storage and use.
Silicon dioxide films prepared by the sol-gel method for use in elements of microsystem technique
Authors: Kozlov A G , Filonina E V 
Published: May 2020

Abstract
Silicon dioxide films prepared by the sol-gel method from a solution based on tetraethoxysilane by spin-coating and subsequent thermal annealing in the temperature range from 200 to 600 °C are considered. The transmission spectra of the pure and impregnated with methyl orange silicon dioxide films are studied. It was found that the transmission of the all films depends on the annealing temperature and the impregnated films have the lower transmission than the pure ones. Studying the transmission difference between the pure and impregnated films in the band at 464 nm, corresponding to the highest absorption of methyl orange, it was determined that films annealed at 400 °C have the highest porosity.
Systems of vibration isolators based on elements with linear characteristics
Authors: Balakin P D , Dyundik O S , Zgonnik I P 
Published: May 2020

Abstract
Actual problems are applied issues that are related to vibration isolation of machine assemblies and operator seats in machines. The publication presents some technical solutions of vibration isolator systems. These systems are simple in design and include elastic elements with a linear stiffness characteristic, but with a special arrangement to the vibration displacements of the protected object. In systems of vibration isolators “with leap” in a specific range the effect of quasi-zero stiffness of the support is realized with an ideal vibration isolation of the object. Technological and universal technical solution for the vibration-isolating seat of transport machine operator is described in the publication.
Formation of the soil foundation for the open storage areas
Authors: Gruzin A V , Gruzin V V , Esbergenov K B 
Published: May 2020

Abstract
Precompaction of soil and construction materials used as the open storage areas foundations makes it possible to increase their bearing capacity. It ensures the stability of the material assets stacks of the foundation soil and their safety during the standard storage period. The research objective is to select and provide a theoretical basis to the technology of constructing the material assets open storage areas foundations. The design of the open storage area foundation and the operating element of its construction are proposed. Theoretical dependences describing the influence of the operating element design parameters on the characteristics of the soil foundation compaction are obtained. The analysis of the obtained dependencies makes it possible to define the operating element design parameters rational values for the particular soil conditions of the material assets open storage area.