bluuebunny/crossref_metadata_2025_split huggingface dataset:
Change Detection Based on Feature Optimization in High Resolution Optical Image
Authors: Pang Haiyan , Yang Xuezhi , Wang Jun , Dong Zhangyu 
Published: May 2020

Abstract
Object-oriented change detection (CD) method can make full use of feature information of high resolution optical images. However, the feature information is redundancy in Object-oriented CD of high resolution optical image due to the fact that the image has multiple bands. Therefore, feature optimization is necessary to object-oriented CD. Aiming at the problem, a novel CD method based on feature optimization which combines improved locally linear embedding (ILLE) algorithm and object-oriented technology is proposed. Firstly, two temporal images are inverted into objects using multi-scale segmentation algorithm. Secondly, the spectral and texture features of the objects are extracted to construct the novel feature change vector. Thirdly, the improved LLE algorithm, which introduces the Geodesic distance metric, is designed to optimize the feature change vector. Finally, the CD result is obtained by FCM algorithm. Experiments construct on the real GF-1 images, and the results confirm the effectiveness of the proposed method.
Research on Cache Strategy of Supporting D2D Communication Based on Recommendation Mechanism
Authors: Zhang Pingping , Pan Peisheng 
Published: May 2020

Abstract
In D2D wireless cache network, a good cache strategy is very important, but the current cache strategy has the problems of low cache hit rate and high base station cost. Aiming at this problem, this paper proposes a smart base station cache strategy based on recommendation mechanism. Through the Q-learning algorithm to learn user mobility and file popularity information, a base station cache strategy with the goal of minimizing long-term base station cost is obtained. How to formulate the base station cache strategy and set the recommendation mechanism under different user movement scenarios in the cellular network. The simulation results show that the lower the user’s mobility rate is, the smaller the optimal recommendation strength is. In the four user mobility scenarios in the simulation, the proposed cache strategy reduces the core network cost by up to 22.4% compared with the greedy cache, and it is reduced by up to 18.6% recommended strategy.
Research on Repeatability of Liquid Filling Mass Based on Weighing Method
Authors: Li Bin , Gou Yang , Chen Jie , Fan Xinghang , Cheng Shuo 
Published: May 2020

Abstract
The traditional dynamic flow controller has the problems of high conductivity, poor system stability and measurement accuracy. In this paper, the filling time of the liquid is controlled by the 0330 electromagnetic valve of Burkert company in Germany; the electronic balance is verified by the 100g weight of F2 grade of China Shuiling weight factory; the liquid mass after filling is measured by the bt4202s electronic balance of Sartorius company in Germany, and the repeatability of the experimental analysis of the liquid quality after filling is carried out. The experimental results show that the liquid filling mass of the device has high repeatability. It solves the problem of low repeatability of small flow liquid filling mass and has high application value.
Performance Evaluation of Key Performance of 5G Mobile Communication System And Development Countermeasures
Authors: Xiafeng Jiang , Xiaotao Xu , Junjie Li 
Published: May 2020

Abstract
This paper mainly studies the key performance of 5G mobile communication system and its development countermeasures. This paper introduces the challenges faced by 5G mobile communication system, which mainly come from increasing mobile data volume, connecting mass terminals anytime and anywhere, shortage of spectrum resources, and green environmental protection and energy efficiency; In order to study the key performance of 5G mobile communication system more comprehensively, first, this paper analyzes the practical significance of establishing the key performance indexes system of mobile communication system. Second, the performance requirements of mobile communication systems in six main application scenes are discussed. Third, the key performance indexes system of mobile communication system is constructed; This paper introduces the purpose and steps of performance evaluation of key performance of mobile communication system, and compares and evaluates the key performance of 5G and 4G in wide-area continuous coverage scene based on AHP. Suggestions on the development of 5G mobile communication system are put forward from four aspects: policy and system, demand and service, technology and talents, and sustainable development.
Study on T-Connection Transmission Line Fault Location Method Based on Transient Fault Traveling Wave Signal
Authors: Zhangzihao  , Yaoxiaodong  
Published: May 2020

Abstract
Aiming at the fault location of T-type transmission lines, which are susceptible to the influence of wave speed and transmission line length, this paper proposes a method of T-type transmission line fault location based on transient fault traveling wave information. Based on the fault reflection traveling wave generated at the fault point of the transmission line when a fault occurs, this paper detects the current and voltage traveling wave of the transmission line before and after the fault occurs through a current and voltage collector, and uses the non-stationary signal analysis to obtain the fault line The initial time of the wave reflection to the transmission line port is obtained by simplifying the formula to obtain the modal maximum value of the initial time of the transient fault traveling wave. The modal maximum value of the initial reflected traveling wave time is brought into the calculation formula of the fault branch location criterion. Finally determine the fault distance. Experimental results based on PSCAD show that the method has better accuracy and efficiency than traditional fault analysis methods.
Robust Secrecy Rate Optimizations for Healthy Monitoring System MISO Channel with D2D Communications
Authors: Jia Xuemeng , Pei Mingjun , Fu Rong , Jiao Zhanwei 
Published: May 2020

Abstract
In this paper, we study the robust secrecy rate optimization of multiple-input-single-output (MISO) security channels with multiple device-to-device (D2D) communication in an electronic physical system for health monitoring applications. We focus on the problems of robust power minimization and maximizing robust secrecy with transmit power in this system. Both of these robust optimizations are subject to probability-based secrecy and D2D transmission rates. The design of robust beamforming can consider combining statistical channel uncertainty model (CUM), but the problem of construction is a non-convexity problem that is not easy to solve, so we propose two methods to solve this problem: based on Bernstein-type inequality and a conservative approximation of S-Procedure. The simulation results demonstrate that the performance of the S-Procedure method on the reachable confidentiality rate is not as good as the method based on the Bernstein-type inequality.
Technological aspects of thin film formation on the rotor of spherical gyroscopes
Authors: Tit M.A. , Scherbak A.G. 
Published: May 2020

Abstract
A scheme of fixation in a technological device during thin film deposition process is considered for the spherical rotor of electrostatic and cryogenic gyroscopes. Calculations of the fixing scheme parameters, based on the contrast image zone location are presented. The influence of the fixing scheme on the rotor imbalance is evaluated. The dependence of the difference between the initial and post-deposition imbalance on rotor and thin film parameters is obtained. Comparison of the dependencies obtained for electrostatic and cryogenic gyroscope rotor is shown.
A comparative study unraveling the effects of TNF-α stimulation on endothelial cells between 2D and 3D culture
Authors: Wang Bo , Chen Ruomeng , Gao Hongqian , Lv Xiaohan , Chen Lifang , Wang Weirong , Liu Yaxiong , Zheng Nanbo , Lin Rong 
Published: May 2020

Abstract
Endothelial cell (EC) dysfunction is an important predictor of and contributor to the pathobiology of cardiovascular diseases. However, most in vitro studies are performed using monolayer cultures of ECs on 2D tissue polystyrene plates (TCPs), which cannot reflect the physiological characteristics of cells in vivo. Here, we used 2D TCPs and a 3D culture model to investigate the effects of dimensionality and cardiovascular risk factors in regulating endothelial dysfunction. Cell morphology, oxidative stress, inflammatory cytokines and endothelial function were investigated in human umbilical vein endothelial cells (HUVECs) cultured in 2D/3D. The differentially expressed genes in 2D/3D-cultured HUVECs were analysed using Enrichr, Cytoscape and STRING services. Finally, we validated the proteins of interest and conﬁrmed their relevance to TNF-α and the culture microenvironment. Compared with 2D TCPs, 3D culture increased TNF-α-stimulated oxidative stress and the inflammatory response and changed the mediators secreted by ECs. In addition, the functional characteristics, important pathways and key proteins were determined by bioinformatics analysis. Furthermore, we found that some key proteins, notably ACE, CD40, Sirt1 and Sirt6, represent a critical link between endothelial dysfunction and dimensionality, and these proteins were screened by bioinformatics analysis and verified by western blotting. Our observations provide insight into the interdependence between endothelial dysfunction and the complex microenvironment, which enhances our understanding of endothelial biology or provides a therapeutic strategy for cardiovascular-related diseases.
Using six vegetation indices based on observational data from remote sensing satellite to estimate effect of rice-cotton rotation on rice yield
Authors: Sun L , Zhu Z S 
Published: May 2020

Abstract
This paper was aimed to examine the differences in main vegetation indices when dealing with the yield of rotated rice for the rice in a rotation with cotton. The rice vegetation indices for continuous rice system and rice-cotton rotation system were computed with the observational data from remote sensing satellite images. The observational data deals with studies whose aim is to elucidate cause and effect relationships between the rice-cotton rotation and the rice yield. The analysis of rice vegetation indices all shown that rice yield increased following rotation with cotton compared to continuous rice. The principal factors to be considered in reaching such a conclusion are the quality of remote sensing image, the method of random sampling, the formula for representation of vegetation indices and the size of differences in vegetation indices.
Survey and analysis on the satisfaction of commercial consumption in Kuan & Zhai Alley
Authors: Du Y D , Huang P , Ma B B , Cheng F Y , Leng Y T , Li H Y 
Published: May 2020

Abstract
Since the ministry of commerce held the national mobilization meeting on the construction of high-grade pedestrian streets in 2018 and started the construction of high-grade pedestrian streets, various parts of the country have actively carried out the construction of highgrade pedestrian streets, with the focus on cultivating a number of pedestrian streets with national influence. As a window of chengdu culture, wide and narrow alley covers a variety of business and travel formats. In this study, likert attitude scale was adopted to conduct field investigation and visit on consumers' satisfaction with the supply of business forms in wide and narrow alley scenic spots, and data analysis was made on the phenomenon of big income difference and low average consumption level among different business forms in scenic spots. In view of the problems existing in the scenic spot, such as small capacity, low consumption level and unbalanced distribution of business, the corresponding countermeasures are put forwarded.
Experimental study on allergic and skin irritation of Guci Powder in Rabbits
Authors: Wang H M , Yao D S , Ma J J , Xu M Y , Lu W X , Ma Z Z , Zhang Z C 
Published: May 2020

Abstract
The study is to observe the irritation and anaphylaxis of Guci Powder on the skin of rabbits. Methods: the irritation of rabbit skin was observed by single dose of broken skin, and the irritability was observed by repeated local administration. A single dose of the drug on the back of the rabbit did not produce any irritation to the intact skin of the animal and no irritation to the damaged skin, nor did repeated local administration produce anaphylaxis. There was no irritation and anaphylaxis in rabbit skin.
Modeling of biotic cycle formation in closed ecological systems
Authors: Brilkov A V , Loginov Y Y , Babkin A V 
Published: May 2020

Abstract
The biotic turnover formation in closed ecological system (CES) is analyzed by means of mathematical and computer modeling. The model CES hierarchical structure formation is ruled by the energy flow through the ecosystem which increases after the introduction of a predator in the steady state of “production - reduction” systems. The model analysis shows that the presence of the primary predator under certain conditions leads to the acceleration of the biotic turnover because of its higher mineralization ability (in comparison with the same of decomposer). The most acceptable predator which is able to bring the system towards the higher biotic turnover rate and energy consumption can be found for each system.
Improvement of environmental efficiency of plants of green zones by creation of subordinate crops of Siberian stone pine
Authors: Kolosovskij Eh V , Matveeva R N , Butorova O F , Bratilova N P , Shcherba Yu E , Pastuhova A M 
Published: May 2020

Abstract
It is topical to increase the ecological efficiency of plantings of green zones of settlements by creating Siberian stone pine crops. The subordinate crops of this type, which were created in 1966 by quadrennial seedlings of different geographical origin at thick planting, were observed (9 pieces in a site measuring 0.7 x 0.7 m, the distance between the centers of the sites is 4 m). It was found that the canopy closure of the stand, consisting of birch and pine, has a significant effect on the growth rates of subordinate crops of Siberian stone pine. So at canopy closure 0,1-0,1 52 years old crops, despite the different geographical origin, had the highest rate of height, stem diameter, crown, number and diameter of lateral branches on the lower live node in comparison with the closure of 0.6-1.0 Average increment of branchlets at 32 year period was by 49,8% more in trees, growing at a canopy closure of 0,2 against 0,7-0,8. Trees growing on the open area characterized by early seeding, were selected and propagated by engrafting.
From «Black sky mode» to ecologizing thought
Authors: Piskorskaya S Y , Kureshov V A 
Published: May 2020

Abstract
The article introduces the environmental situation in Krasnoyarsky krai, it discovers the problem of “black sky mode”, and indicates how to solve the problem adequately using additional landscaping and ecologizing people’s thought. The research demonstrates the methodologies to form environmental thought and behavior. The article represents the social practices developed by Reshetnev Siberian State University of Science and Technologiesto reduce the air pollution.
Influence of sweep on the efficiency of sawing
Authors: Ogurtsov V V , Derevyannykh D N , Kargina E V , Matveyeva I S 
Published: May 2020

Abstract
The influence of the sweep of logs on the volume yield of sawn timber and the profitability of its production has been investigated by the method of simulation modeling. It is established that when the average sweep varies from 0 to 0.25%, the volume yield is reduced by 1.2 … 2.9%, the profitability is reduced by 2.7 … 5.8%. The contribution of the sweep of logs to the deviation of the real volume yield of sawn timber from its calculated value can reach 70 … 80%.
Dependence of saw timber volume output and production efficiency on logs ellipticity
Authors: Ogurtsov V V , Dereviannykh D N , Kargina E V , Matveeva I S 
Published: May 2020

Abstract
We investigated the effect of the log ellipticity on the volume output of timber and production efficiency by means of simulation. The degree of ellipticity influence on the forecasting of timber production economic indicators accuracy is shown. We have found out that when the average ellipticity from 0 to 6 mm, so the volumetric output is reduced by about 1 %, and profitability decreases by 0.8…2.3 %.
On some group properties of the functional presentation of information
Authors: Kukartsev Anatolii M , Kuznetsov Alexander A , Kuklina Anna I 
Published: May 2020

Abstract
The paper provides an overview of research results on processing the information represented as Boolean functions. Actions of the hyperoctahedral group (or the Jevons group) are set on these functions. Information objects transformed by such actions have special frequency (entropy) characteristics. Such actions can be used to generate information messages with equal frequency and / or entropy characteristics. Preservation of the frequency characteristics of informational messages also allows us to solve one of the problems of classifying Boolean functions with respect to the Jevons group action. This problem has existed since the Harvard catalog was created and it has not been solved until the results of the studies covered in the paper were applied. Additionally, the possibilities of optimizing the calculation of actions tens and hundreds of times due to the properties of the elements of the Jevons group and modern processors are highlighted. This optimization allows the construction of information processing algorithms using the Jevons transformations for real data (commensurate with 1 MiB).
Structural diagram of mass transfer in larch wood during convective drying
Authors: Zaripov Sh G , Chizhov A P , Klevitova Zh N 
Published: May 2020

Abstract
The article provides a substantiation of the structural diagram of the moisture removal mechanism, which is similar to baromembrane process,from larch sawnwood during convective drying. The concept proposed is based on such provisions as the presence of a semipermeable membranes system in larch wood and the chemical activity of larch wood, which leads to the formation of a gas-vapor mixture in volumes many times exceeding the volume of the sample itself. As a result, mass transfer of an aqueous solution of extractive substances from the center of the board to the surface is observed. The passage of an aqueous solution of extractives through a system of semi-permeable membranes leads to the separation of the solution into concentrate and permeate. The change in the physical state of permeate leads to the formation of the layer that greatly reduces the intensity of the moisture removal from the wood. Then the entire duration of drying should be considered as the sum of two clearly marked periods - intensive and slow. The aim of the work is to substantiate the structural diagram of mass transfer in larch wood during convective drying.
Low-temperature phase transition in bismuth ferrite films substituted by manganese
Authors: Aplesnin S S , Masyugin A N , Rybina U I , Tarasenko T N. , Yanushkevich K I 
Published: May 2020

Abstract
Measurements of the capacitance and tangent of dielectric loss angle, impedance and resistance, magnetization in a magnetic field of 8.6 kOe BiMnxFe1-xO3 films in the temperature range 80-600 K were carried out. The anomalies of the dielectric properties are explained in the Debye model and correlate with changes in the magnetic moment versus temperature.
The study of the light section canal anodic-abrasive polishing mechanism
Authors: Trifanov V I , Melkozerov M G , Sukhanova O A , Trifanov I V , Mednikov D M 
Published: May 2020

Abstract
The development of electronic technology, waveguide transmission lines of electromagnetic energy, as well as precision engineering require the development of polishing technologies. One of these technologies is the method of anodic abrasive polishing (AAP). The causal diagram of the influence of technological parameters on the output characteristics of AAP is presented, as well as the model of the process and the analysis of the mechanism of anodic abrasive polishing at the longitudinal vibration contact with the treated surface and the impact of the pulse current density used for electrochemical polishing of micro-irregularities with the help of a cathode integrated with an elastic abrasive tool
Disc friction to specify power balance of a turbopump unit of LPE
Authors: Zuev A A , Nazarov V P , Zhuikov D A , Tolstopyatov M I , Savelyeva M V 
Published: May 2020

Abstract
The research elaborates the main characteristics of the liquid propellant engines; it determines that some turbopump units have got the frequency of rotor spinning up to 100 000 and even 120 000 r.p.m. The authors analyse the current methodologies to specify losses connected with disc friction. The methodologies determining disc friction coefficient often obtain criterion-empirical character, and due to increasing a number of rotor spinning of turbopump unit of the liquid propellant engines, they reflect the specification reliability inaccurately. The research demonstrates equations to determine disk friction coefficients based on considering the theory of three-dimensional boundary layer to a rotational flow taking into account the turbulent process of velocity distribution. The authors give recommendations on determining an index of velocity distribution degree depending on Reynolds rotation criterion of a disc and plug flow.
Magnetocapacity of manganese sulphides substituted by thulium ions
Authors: Kharkov A M , Sitnikov M N , Kretinin V V , Fisenko O B , Fillipson G Yu 
Published: May 2020

Abstract
The capacity and the dielectric loss tangent of a TmxMn1-xS (x=0.05, x=0.1) solid solution in the frequency range (1–300) kHz without field H=0 and in a magnetic field of H=8 kOe in the temperature range (80–500) K were measured. The increase of dielectric permittivity and the maximum of dielectric losses at high temperatures were found. The shift of the maximum of the imaginary part of the permittivity towards high temperatures with increasing concentration is found. The magnetocapacitance effect for two compositions and change the sign of magnetocapacity with increasing concentration were revealed. The magnetocapacity is explained in terms of the model with orbital electron ordering.
Factor analysis of inelastic electron scattering cross section spectra of Si, Fe and iron silicides FeSi2, Fe5Si3
Authors: Igumenov A Yu , Parshin A S , Mikhlin Yu L , Andryushchenko T A , Kanzychakova V O 
Published: May 2020

Abstract
The inelastic electron scattering cross-section spectra of Si, Fe and iron silicides FeSi2, Fe5Si3 were calculated from the experimental reflected electron energy loss spectra as the product of the average inelastic mean free path and the differential cross section of the inelastic electron scattering. The inelastic electron scattering cross-section spectra were studied using factor analysis. This method allowed us to quantitatively separate the surface and volume contributions to the spectra, and determine the energy of the bulk plasmon more accurately than it is possible using traditional methods.