bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimization of silicone rubber materials for high voltage switchgear and study on characteristic gas of thermal decomposition
Authors: Tang Bin , Liang Qinqin , Zhang Longfei , Luo Zongchang , Luo Chuansheng , Hu Mengzhu , Wang Jialin , Zhu Liping 
Published: December 2022

Abstract
In this paper, three kinds of silicone rubber materials, methyl silicone rubber, phenyl silicone rubber and fluorosilicone rubber, are used as the research object, contact angle tester, thermal conductivity tester, insulation resistance tester, differential scanning calorimeter and thermogravimetric analyzer to explore the effect of side groups on the properties of silicone rubber. The results show that the thermal conductivity of three kinds of silicone rubber materials is poor, but they all have good hydrophobicity, insulation and thermal stability. Among them, phenyl silicone rubber shows better hydrophobicity and thermal stability. In addition, the type and relative content of characteristic gases of thermal decomposition of silicone rubber materials at different temperatures are analyzed in detail by gas chromatography mass spectrometer. The results show that C6H18O3Si3 and C8H24O4Si4 are the common characteristic gases of thermal decomposition of three kinds of silicone rubber.
Research on control and management mechanisms in Time-sensitive networks
Authors: Chang Ying , Yang Hongxue , Zhu Qinghua 
Published: December 2022

Abstract
In recent years, with the development of the new generation of network information and communication technology, the internet of things, the internet of vehicles and the industrial internet technology have been booming. At the same time, many time-sensitive businesses have sprung up. The demand of these businesses for data transmission is developing towards the direction of high rate, low delay and low jitter. The current internet technology is facing great challenges. However, due to the inherent problems of forwarding mode and control management mechanism, traditional ethernet is difficult to meet the real-time, deterministic and reliability demands of time-sensitive flows. In the face of the urgent demand for the deterministic data transmission of time-sensitive businesses, time-sensitive network technology emerges at the historic moment.
Research on single cell membrane algorithm and engineering application based on membrane computing theory
Authors: Song Qi , Huang Yourui , Xu Jiachang , Lai Wenhao , Xu Shanyong , Han Tao , Rong Xue 
Published: December 2022

Abstract
Membrane computing is a new computing paradigm with great significance in the field of computer science. The Multi-membrane search algorithm (MSA) is proposed based on the membrane computational population optimization theory. It showed excellent performance in the test. This paper further studies the performance characteristics of a single individual (Single Cell Membrane Algorithm, SCA) of MSA. SCA can generate adaptive solution sets for problems of different dimensions. Through transcription and reprocessing rules, new weakly correlated feasible solutions are formed for global search and local exploration. This paper is based on the unimodal Sphere function and the multimodal Rastrigr function, at dim=3, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 300, 500, 1000 and Q=1.00, 0.75, 0.50, 0.40, 0.30, 0.20, 0.10, 0.005, 0.025, 0.010, the SCA was optimized for 1000 iterations. Analyze the impact of the key parameter Q of SCA on the search performance of the algorithm in problems of different dimensions. The results show that under the set conditions, SCA has better performance when Q is 0.010 and 0.025 in the unimodal function test. In the multimodal function test, SCA has better performance when dim≤100 and Q≤0.200, and when dim>100 and Q≥0.200. In addition, this paper employs one engineering problem: I-beams to perform engineering tests on SCA and obtain results superior to other algorithms participating in the comparison. The test and comparison results show that SCA can also be used as a derivative algorithm of MSA, and has good performance.
Design and implementation of ECC combined with OPT encryption algorithm
Authors: Yang Xiaotian , Ma Ran , Gao Fei 
Published: December 2022

Abstract
【Objective】 Combining ECC and OPT, a novel elliptic curve algorithm was proposed, which can effectively resist the reverse calculation of quantum computer and ensure the security of private key. 【Method】 On the basis of elliptic curve encryption algorithm, OPT algorithm was introduced to protect the private key. 【Result】 The signature and verification of messages can be successfully completed by the repeated algorithm on Python platform. Finally, the algorithm is proved to be safe under Shor algorithm and quantum computer attack through algorithm theory. 【Conclusion】 ECC combined with OPT encryption algorithm can effectively resist reversible computation of functional quantum devices, prevent eavesdroppers from forging signatures, and ensure the security of modern public key cryptosystems.
Influence of thickness and temperature on photoelectric properties of p-CdTe-nCdS and pCdTe-CdSe heterostructures
Authors: Otazhonov S M , Ergashev R N , Botirov K A , Qaxxorova B A , Xudoynazarova M A , Abdukarimova N A , Madaminova M E , Ismoilova E M 
Published: December 2022

Abstract
In this paper, we study the photoelectric properties of pCdTe-nCdS and pCdTe-nCdSe-based film heterostructures. It is shown that the high value of the electron diffusion length in pCdTe slick (pellicle) is due to the presence of a built-in field in it. When studying the effect of temperature on the spectral characteristics, it was found that with increasing temperature, the maximum photosensitivity of the heterostructure shifts towards longer wavelengths of light. The shift in the photosensitivity maximum is explained by changes in the band gap of cadmium telluride. As shown, the accumulation coefficient increases with raising thickness of the wide-gap layer. It has been established that the short-wavelength edge of the photosensitivity of the pCdTe-nCdS structure begins to increase sharply at a photon energy of hv ≤ 2,3 eV, while the photosensitivity of the pCdTe-nCdSe structure already at a photon energy has a significant value ~ 100 μA/mV.
Intrinsic oscillations of viscoelastic three-layer truncated conical shell
Authors: Safarov I I , Teshaev M Kh , Axmedov Sh R , Boltayev S A , Almuratov Sh N 
Published: December 2022

Abstract
Conical shells are used in rocket engineering, construction, aircraft engineering and shipbuilding. The purpose of the present work is to carry out a technique, algorithm and programs for obtaining resonant frequencies and waveforms for circular viscoelastic three-layer conical shells. On the basis of the Lagrange variation equation integral-differential equations of own vibrations are obtained. Based on the method of finite elements, a method for solving the problem of eigen-wear oscillations of the truncated three-layer shell with handedly and freely resting edges was carried out. The problem comes down to solving algebraic equations a large order. Obtained a frequency equation with complex output parameters. The proper oscillations of truncated conical shells are investigated, some characteristic features are revealed. Solving the frequency equation by the Muller method, complex roots are determined. It is established that as the elastic modulus of the shell increases, the real and imaginary parts of the natural frequencies increase accordingly. Paying attention to the rheological properties allows you to increase the values of frequency up to 15%.
Reflection of an electromagnetic wave from two-layer bigyrotropic magnetic structure
Authors: Mukimov K M , Ochilov O , Turkmenov H I , Ochilova O O 
Published: December 2022

Abstract
The issues of reflection of an electromagnetic wave from a two-layer bigirotropic magnetic structure are considered, the formulas obtained can be used to calculate the equatorial Kerr effect depending on the dimension of nanofilms. And also, for the interpretation of experimental results of the equatorial Kerr effect on transparent multilayer magnetic materials, where quantum dimensional effects are influenced.
Unusual spin dynamics
Authors: Zhumaev Mustakim R , Sharipov Mirzo Z , Rizoqulov Mirzokhid N 
Published: December 2022

Abstract
The paper considers the dynamics of a spin when it is simultaneously affected by a constant magnetic field directed along the Z axis and a variable one applied to the X0Y plane. It is shown that coupled oscillations of all components of the magnetic moment (or magnetization) arise in this case. In other words, it becomes possible to control the orientation of the magnetic moment. Further, it was found that this possibility remains even in the case of two constant magnetic fields - when they are perpendicular to each other.
Study of the magnetic properties of nanostructural metal complexes of chitosan
Authors: Ashurov N Sh , Yugai S M , Atakhanov A A , Vakhidova N R , Rashidova S Sh 
Published: December 2022

AbstractNanostructured polymeric metal complexes based on chitosan with Co2+, Mn2+, Cu2+have been obtained. The role of the precipitant in the formation of nanoparticles with certain sizes is shown. Optimal morphologies for the creation of new and promising nanostructured metal-polymer materials with magnetic properties have been identified. A correlation has been established between the magnetic characteristics of polymeric metal complexes based on chitosan with metal ions of the 3-d transition series with their structural features.
Electric voltage redistribution effect in Schottky barrier structures based on Si<P,Ni> under hydrostatic pressure
Authors: Khamidov R , Mamatkarimov O 
Published: December 2022

Abstract
The paper presents the results of strain-effect studies in diode structures with Schottky barrier made on the basis of n-Si<P> and n-Si<P,Ni> with resistivities 102 - 105 Ohm·cm under all-round hydrostatic pressure. It is shown that as the resistivity of the base area of the structures increases, its rectifying properties worsens. It was found that the worse of the rectifying property of the surface barrier structures is not due to the presence of compensating impurities, but depends only on the resistance of the base area. In the Schottky barrier structures based on n - Si<P,Ni> with resistivities ~104 and 105 Ohm·cm the potential barrier is almost not formed. For the first time it was found that in structures with Schottky barrier under all-round hydrostatic pressure there is high strain sensitivity due to redistributions of electric voltage between the contact and the base area.
Study of the dependence of light ion sputtering yields of carbon-modified surface titanium layers on their thickness
Authors: Manukhin V V 
Published: December 2022

AbstractA theoretical sputtering model based on two mechanisms is used in this work to investigate the dependence of light ion sputtering yields of carbon-modified surface titanium layers on their thickness. The model used allows not only to correctly describe the nonlinear dependence of the sputtering yields on the layer thickness, but also to analyze the resulting dependencies. Calculations of the total sputtering yields of helium and hydrogen ions of surface layers of titanium modified with carbon are given in comparison with the results of computer simulations.
Structure and thermal properties of chitin and chitosan from various sources
Authors: Ashurov N Sh , Abdurazakov M , Yugay S M , Atakhanov A A , Gulamjanov Kh A , Turaev J I , Akhymbetova G D , Rashidova S Sh 
Published: December 2022

Abstract
The structural and thermal properties of chitin and chitosan isolated from different sources (Artemia sp.cysts (from the Aral Sea) and Silkworm pupae (Bombyx mori)) were studied by using FTIR, XRD, and DSC. It is shown, that the chitin and chitosan samples from different sources have a similar structure, however, depending on the sources differ in the ratio of the phase composition. Two types of crystalline modification of the structure (α-and β-modifications) are observed for chitin isolated from Artemia sp.cysts. The chitin isolated from Bombyx mori has three polymorphs (α-, β-and γ-modifications) with orthorhombic, monoclinic and triclinic syngonies. The thermal stability of chitin and chitosan samples was also depended on sources.
Synthesis of powder functional composite materials containing g-C3N4, β-Si3N4 and Si2N2O phases
Authors: Zherebtcov I S , Osadchy A V , Savin V V , Savina L A , Chaika V A 
Published: December 2022

Abstract
The article discusses the technology of alloying carbon material with Taunite-M nitrogen and silicon, which combines mechanochemical synthesis in a spherical planetary mill and multistage heat treatment up to 1100°C. The aim of the work is to obtain a new material based on nanostructured carbon raw materials with improved physical and chemical properties as a result of the formation of new phases due to the introduction of silicon and melamine into the initial charge as a source of nitrogen. The phase composition of the obtained samples was studied by X-ray diffractometry, the porosity and distribution of chemical elements in the samples of the obtained material were evaluated using X-ray tomography and scanning electron microscopy. Based on the results obtained, conclusions are formulated about the formation of phases of graphite-like carbonitride, nitride and oxynitride of silicon in a thermally stable nanocarbon material.
Exhaled air Raman spectroscopy for Helicobacter pylori diagnostics
Authors: Popov E E , Polischuk A V , Vitkin V V 
Published: December 2022

Abstract
The possibility using Raman spectroscopy in the analysis of samples for the urease breath test to diagnose the presence of the bacterium Helicobacter pylori has been demonstrated. The Raman scattering spectra of the air exhaled by a person were obtained, the volume fractions of 12CO2 and 13CO2 in exhalation samples were determined.
New trends in the heat generators development with contact heating
Authors: Stoyanov Nicolay , Khashchenko Andrey , Smirnova Alla , Abornev Denis , Taran Sergey , Grinchenko Vitaly 
Published: December 2022

Abstract
The research relevance is conditioned by decrease in installations efficiency and high fuel consumption due to scale formation on heat-exchange surfaces, and conditioned by transition to ecologically clean, resource-saving power engineering and increase in hydrocarbon raw materials extraction efficiency. In this connection, this article aims at contact type heat generators application disclosing possibilities. The main approach to the study of this problem is the heat-transfer agent contact heating application. This article materials practical value is for complex heat supply systems engineers and designers.
Toroidal anapole with point magnetic dipoles
Authors: Borovkov Dmitrii , Valero Adrià Canós 
Published: December 2022

Abstract
The role of multipolar expansion of the localized current is significant in a broad range of disciplines in the physics of nowadays. It is actively used in such problems as the design of nanoantennas in photonics or the description of exotic states of matter. The toroidal multipoles are the third group of multipoles which complements the electric and magnetic multipolar families. The investigation of toroidal multipoles is important because of their role in the formation of so-called anapole states, non-radiating sources. The further study showed that there are also exist the higher-order toroidal dipoles or mean-square radii, which are equivalent. Here we suggest the structure which consists of point magnetic dipoles and supports the toroidal anapole state, which is obtained with the destructive interference of electric toroidal dipole with the first mean-square radius of the electric toroidal dipole. We also present an analytical condition for toroidal anapole with this system of point magnetic dipoles placed in two circles.
Practical realization and design of three-cascade prism mass analyzer for isotopic analysis of H-He mixtures using MS-platform technology
Authors: Gromov I A , Gall L N , Sachenko V D , Gall N R , Rajabov Sh U 
Published: December 2022

Abstract
The paper presents the construction of a mass analyzer for the analysis of hydrogen-helium mixtures based on a magnetic prism using a three-stage circuit that includes two cylindrical capacitors. The choice of an ion-optical scheme that provides a high resolution of 3300, which is necessary for the separation of all nuclides formed during the analysis of hydrogen-helium mixtures, is justified. It is shown that the innovative «MS-Platform» technology makes it possible to ensure high assembly accuracy of the elements of the prism mass analyzer ion-optical circuit, which is necessary to realize all the advantages of a prism mass spectrometer compared to sector ones.
Methodology for accelerated testing of fiber-optic sensors of heterogeneous physical quantities using the principle of prediction
Authors: Badeeva Elena , Murashkina Tatiana , Gaivoronskaya Tatiana , Polyakova Ekaterina , Motin Andrei , Kukushkin Alexey , Plotnikova Ekaterina , Olenskaya Alexandra , Arutyunov Armenak 
Published: December 2022

Abstract
The technique of accelerated tests of fiber-optic information-measuring systems, combining fiber-optic sensors of heterogeneous physical values, providing confirmation of technical and operational characteristics of fiber-optic information-measuring systems by applying the principles of acceleration, prediction of behavior of parameters-criteria of validity and distribution of test results of a test sample fiber-optic sensors, as well as the most technically perfected fiber-optic sensors of one physical value into a number of fiber-optic sensors of heterogeneous physical values unified by design and technological solution, which significantly reduces the time and material costs of conducting tests and obtaining their results.
Research and application of BaYF5 optical films in the range of 1.3-27 microns
Authors: Kotlikov E N , Andreev V M , Lavrovskaya N P , Tereshchenko G V 
Published: December 2022

Abstract
The determination of optical coefficients of absorbing coatings in the far infrared spectrum on silicon substrates is considered in this paper. To find them, a technique is used based on taking into account correction associated with absorption spectra. Correction of the spectra is carried out by exploitation models of the absorbing film. Optical coefficients of BaYF5 films in the spectrum region of 1.3-27 microns were obtained. On their basis, a band-pass metal-dielectric filter was synthesized for a wavelength 5 micron.
Application of the laws to compose fractal computation algorithms when modeling and analyzing their growth
Authors: Pylkin A N , Maikov K A , Kuzmenko S N , Teplov A A , Bubnov S A 
Published: December 2022

Abstract
Generalized analysis of the methods to construct fractals let to find algebraic patterns of fractal algorithm, fractal operators fi formalizing basic operations to construct the fractal structures of a specific type being the major concept. The fi are introduced with multiplication and addition operations together with the concepts of singular, zero and inverse operator that allow defining periodic and quasi-periodic fractal structures. An endless fractal length - basic operator which can give a possibility to obtain a limit fractal synthesis idea as a structure without self-similarity but with a regularly decreasing scale. The connection between fractal growth computations and widely examples of application in the nature is considered. Methods to analyze growth processes are offered, their basic characteristics are shown. The mathematical description of the fractal growth characteristics and their dependence on specifically defined parameters of algorithm are given. The analysis of fractal point growth trajectory is made. The algorithms applied and the methods to analyze growth processes are shown to be modernized and adapted for wide spectrum of tasks.
A software-based method for energy losses decreasing in cascaded buck + boost DC-DC converter
Authors: Nepomnyaschiy O V , Krasnobaev Yu V , Sazonov I E , Yablonskiy A P 
Published: December 2022

Abstract
A MOSFETs switching times calculation method for the known modulation strategy for bidirectional buck + boost DC-DC converter is presented. A former low-loss, constant-frequency modulation strategy based on a negative inductor offset current takes place at the beginning of each conversion period which provides the ability to turn on converter’s MOSFET switches under zero-voltage and zero current switching (ZVS/ZCS) condition. Time interval between switching times of half-bridge MOSFETs is needed to provide the ability to turn on the MOSFET under ZVS/ZCS due to its antiparallel diode takes over an inductor current. Described method based on a switching delay time estimation for the worst case of converter’s circuit components spread which allows to calculate proper MOSFETs switching times by Digital Control Unit (DCU). The article describes in detail the switching of the input half-bridge MOSFETs at first switching time. The clarified offset current calculation method, based on an estimated switching delay and converter’s input voltage is presented.
Decoding of the turbo code created on the basis of the block code using the syndrome grid
Authors: Sidorenko A A 
Published: December 2022

Abstract
Turbo codes came closest to the Shannon limit. They can be built on the basis of both block and convolutional codes. When decoding a block code using a syndrome lattice, it is possible to use well-studied algorithms for decoding convolutional codes with soft input and soft output. This publication demonstrates the application of the maximum a posteriori information decoding algorithm. The process of decoding a code sequence of a turbo code generated by an encoder consisting of two encoders of a block code and an interleaving device, in the presence of three errors in the received code word, is considered in detail.
Development of a gesture-based system of interaction with the interface of adaptive information systems
Authors: Patutin Kirill , Surkova Ekaterina , Sokolinskaya Olga , Shilcin Maxim , Prokudina Nina 
Published: December 2022

Abstract
The implementation of gesture control is an actual direction in the field of organizing interaction with adaptive information systems. This study considers the development of a neural network-based gesture control system for hand recognition and gesture classification. When implementing such systems, it is necessary to ensure the maximum accuracy of gesture recognition, as well as high performance (video stream processing speed). At the first stage of the study, the task of optimizing gesture control system was posed, including analysis of the information processing algorithms used for optimization according to the criteria of classification accuracy and performance. In the course of solving the optimization problem, the structure and parameters of the neural network were determined that provide the best accuracy indicators, and the necessary changes were made in the software of the gesture control system to achieve the required level of performance. The developed software for the gestural interaction system was tested when integrating with the interface of adaptive information systems implemented on the basis of the Unity game engine. The results obtained can be used in the implementation of interfaces for interaction with virtual reality with a high level of immersion.