bluuebunny/crossref_metadata_2025_split huggingface dataset:
Innovative Mode of Visual Communication Design Practice Teaching Based on Big Data
Authors: Wang Xiaojun 
Published: December 2021

Abstract
With the advent of the era of big data, big data has affected all walks of life, and to a certain extent some questions have been raised about the logical way of teaching visual communication design courses. Therefore, there are serious problems in the teaching of visual communication design courses. This article introduces some innovations and practices in practical teaching of creative visual communication design courses, and uses these methods to conduct a series of research and discussion on creative visual communication design courses. Universities in our country must reform their teaching and training methods and cultivate talents who can meet the needs of the development society in the era of big data. Especially some undergraduate colleges that have just entered the undergraduate stage should teach in the course of visual communication design innovation. This path has undergone positive changes. In order to cultivate students’ cultural, creative awareness and technology, visual communication design has a close relationship with the development of creative industries. In the education process, the integration of technology and aesthetics should be emphasized. In the era of mobile media, artistic creation results should be combined with H5, video, illustration, and virtual. Due to the comprehensive effect of reality and other factors, talent training not only possesses the cultural heritage, design power and new technology required by the creative industry. Therefore, innovation and practice of education and teaching for this course are imperative. At present, our country is establishing a dynamic scientific visual communication curriculum education and research system focusing on the development of visual communication symbols and language research. Visual communication design refers to the design of using visual symbol language to convey information. In China, the change of modern design concepts is a new vocabulary that has gradually been accepted by people in the past 10 years and has become an important part of the integration of university design education and traditional design fields. The content and direction can include all educational courses with visual information as the main content. The professional direction is gradually recognized and used in domestic design schools. Experimental research results show that in the current era of big data, the innovative trend of practical teaching of visual communication design is inevitable, and there is an urgent need to reform and innovate teaching methods.
RETRACTED: Construction of E-commerce Personalized Information Recommendation System in the Era of Big Data
Authors: Wang Yaosheng 
Published: December 2021

Abstract
With the continuous expansion of the scale of e-commerce, personalized recommendation technology has been widely used. However, the traditional recommendation system has been unable to meet the current needs of data processing, and good big data processing ability has become the basic requirement of the new personalized recommendation system. In addition, traditional recommendation systems are often limited to tangible goods recommendation, and pay less attention to e-commerce logistics service recommendation. In this paper, through the in-depth study of information personalized recommendation service in e-commerce environment, combined with the application background of big data: Taking the user dissimilarity matrix as the recommendation model, we propose IU usercf and UDB slope one recommendation algorithm. The two algorithms based on incremental update recommendation model have good scalability, can effectively deal with big data, and have high prediction accuracy. The proposed algorithm is applied to the actual system, taking e-commerce logistics service as the recommendation object and iu-usercf as the recommendation algorithm, the personalized recommendation system for e-commerce logistics service is constructed. The e-commerce logistics service recommendation system explores the application practice of recommendation algorithm under big data, and enriches the application scenarios of personalized recommendation technology.
Study of a Multi-Fusion Positioning System Based on Beidou Indoor Inertial Navigation
Authors: Wang Peiguang , Ma Sheng , Nie Haitao , Zang Zhibin , Zhao Jianwei , Zhou Hangfan , Wang Cong 
Published: December 2021

Abstract
This article proposes an indoor combined positioning terminal based on Beidou pseudofiles and micro-inertial navigation sensors. Through the built-in Beidou pseudo lite positioning IP soft core, it can receive and analyse Beidou satellite signals. The article creates BDS ground inertial positioning data receiving hardware; performs inertial positioning data primary information identification authentication on the inertial data received by the hardware; performs multi-inertial data fusion estimation calculation on inertial positioning data after authentication, reduces the dimensional error value, and completes the proposed system Design. The program makes full use of the data resources of the existing airborne equipment, does not need to transmit radio signals, and the user capacity is not limited, which is suitable for highly dynamic users. Through simulation and sports car test, it is proved that the scheme is feasible.
Research on 500kV Transformer on-load Tap Changer Fault Treatment and Physical Properties Testing
Authors: Lan Dongliang 
Published: December 2021

Abstract
This article introduces the intermittent increase of acetylene content in the oil during the operation of a 500kV start-up substation of a power generation company. It is preliminarily judged that there is spark discharge in the oil chromatographic analysis and on-site partial discharge test. After returning to the factory for maintenance and internal inspection, it was found that the movable contact and the fixed contact of the selected part of the on-load tap-changer were not connected in place, which caused intermittent spark discharge and continued to increase acetylene. The problem is solved by adjusting the number of turns of the gear when the tap switch is switched forward and backward, and the transformer resumes normal operation.
Research on Full Link Intelligent Control Platform for Substation Maintenance through Edge-Aware
Authors: Zhu Jiayi , Jiang Keruo , Xiao Lifei , Mou Peifu , Geng Lang , Liu Yicheng 
Published: December 2021

Abstract
In view of the imperfect process control, safety control and data control in substation maintenance operation, this paper proposes a full link intelligent control platform for substation maintenance operation based on edge-aware. The platform is composed of on-site edge-aware system and big data decision service system. The on-site edge-aware system uses various intelligent tools to collect data, carries out real-time safety behavior early warning, maintenance quality control and maintenance process supervision through edge computing technology, and uploads the analyzed and processed information to the big data decision service system. The big data decision service system provides support for online decision-making of substation equipment maintenance according to the panoramic multi-source information of the maintenance site provided by the site edge perception system. The full link intelligent control platform for substation maintenance operation has built a control system for real-time control of on-site maintenance operation process, on-site maintenance information and on-site maintenance safety information, which improves the management efficiency of substation maintenance on-site operation and enhances the safety guarantee of maintenance operation.
Used For Space Irradiation Environment Simulation Equipment Property Analysis of Metal Mirror
Authors: Wang Danyi , Jiang Shanping , Zhang Pengsong , Xiang Yanhong , Li Hongsong , Xu Yanlin , Yang Linhua , Du Jiayu 
Published: December 2021

Abstract
With the development of space science and technology, the requirements of spacecraft environment simulation tests are gradually increasing, and radiation environment simulation has also attracted much attention. Based on space radiation environment simulation equipment of vertical metal reflector material in the solar simulator performance analysis, the systematic analysis of the influence factors of metal reflector, aimed at straight metal mirror blank material performance analysis, including the mechanics analysis and optical analysis, the performance to the blank material for testing. The test results show that the aluminum alloy 6061T6 billet used in the metal mirror can meet the requirements of high irradiation vertical solar simulator, and lay a solid foundation for the subsequent solar irradiation simulation, space illumination simulation and spacecraft thermal environment simulation.
Physical Testing and Surface Morphology Studies of Stainless Steel Irradiated with Xe Ions
Authors: Xu Chaoliang , Liu Xiangbing , Li Yuanfei , Jia Wenqing , Qian Wangjie , Quan Qiwei , Yin Jian 
Published: December 2021

Abstract
6 MeV Xe ions were used to irradiate austenitic stainless steel at room temperature. Three displacement damage levels of 2,7 and 15 dpa were selected. Microstructure and surface morphology were characterized by transmission electron microscopy (TEM), positron annihilation lifetime spectroscopy (PLS) and atomic force microscope (AFM). PLS indicated that vacancy defects were introduced by ions irradiation. Vacancy clusters containing Xe will reduce the positron annihilation lifetime. High density of dislocation loops were observed by TEM. The dislocation loops size and density saturates after 7 dpa and the nature of dislocation loops can be deduced by its distribution. A surface step was detected by AFM measurements between irradiated region (uncovered) and unirradiated region (covered with nickel mesh). This indicate that the irradiation swelling phenomenon occur and swelling is closely related to irradiation damage. According to the step height, the volume swelling is about 1.7% and 4.2% after irradiated to 7 and 15 dpa.
The particles concepts and physical detection schemes of dark matter
Authors: Lin Zhongyi , Xiong Ziheng , Yang Bowen 
Published: December 2021

Abstract
It is still unable to determine the categories of particle that composes the dark matter due to the shortage of detection methods. In this paper, we used the methods of separation of variables, analogy, and dimensional analysis to investigate dark matter detection. The three different models, including the WIMP, axions, and MACHOs, are considered first, which described the properties of dark matter as well. Subsequently, the three currents methods of detecting dark matter, and shortage of those methods are discussed. According to the drawbacks, we have related Gravitational Waves and Cosmic Rays to detecting dark matter, which may contribute to the further detection of dark matter. The milestones achieved these years have also been briefly described, followed by some up-gradations of detectors and further research schemes. These new methods proposed in theory will be upgraded and implemented soon. These results shed light for future dark matter detection.
Research on Influencing Factors of Current-carrying Temperature Rise on Connector Terminal of Current Circuit in UHVDC Converter Station
Authors: Liu Peng , Si Jiajun , Zhang Jian , Zhou Lixian , Li Dongqing 
Published: December 2021

Abstract
Relying on the high current temperature rise test, starting from three aspects of different materials, different structural strengths, and different contact conditions, the research on the current-carrying-temperature rise characteristics of the joint terminals of ±800kV UHVDC converter stations under different conditions is carried out. The results show that, for joint terminals of the same structure type and contact area, the difference in resistivity of joint terminals of different materials has a significant impact on the temperature rise level. When the material is the same, the temperature rise level can be reduced to a certain extent after the silver (tin) layer is added to the contact surface of the terminal. When the contact resistance of the joint terminal and the current density are the same, after increasing the contact area, the temperature rise and decrease level of the aluminum alloy plate lap type joint terminal is significantly better than other types of joint terminals. The contact resistance and temperature rise of the joint terminal decrease with the increase of the bolt tightening torque, and become stable when it reaches more than 80%. When the bolt tightening torque reaches more than 90%, the surface finish of the contact surface has no obvious effect on the contact resistance of the joint terminal. By controlling the material properties, structural strength, contact conditions, significantly reduces the temperature rise of the level of the joint terminal, effectively ensuring the safety ±800kV UHVDC converter station stable operation.
Arrangement Method of Vibration Dampers Considering Frequency Response Physical Characteristics and Stiffness of Conductor
Authors: Weng Yongchun , Zhang Zhao , Li Xiaolai , Yang Shiqiang , Liu Shengchun , Wu Yuxin 
Published: December 2021

AbstractIn order to study the calculation method of installation distance of vibration dampers with higher precision, so as to maximize its anti-vibration performance on the conductor. The arrangement method of dampers based on the frequency response characteristics of conductors is proposed, the dynamic model of conductor considering stiffness is established. The model is solved by finite difference method, the natural frequency and vibration mode of conductor in case of Aeolian vibration are obtained, and the wavelength of conductor vibration is obtained according to its mode, so as to calculate the installation distance of vibration dampers. The calculation results of the new method are compared with those of the traditional method, which proves the advantage of the new method in calculation accuracy. The new method has a good effect on improving the calculation accuracy of the installation distance of the vibration dampers on the conductors, which is greatly influenced by its stiffness. At the same time, the frequency response of the conductor should be considered as much as possible in the calculation of the installation distance of the damper.
UAV Path Planning of Combining Ant Colony and Beetle Antennae Algorithm Using Intelligent Wireless Communication
Authors: Xu Le , Zhao Wenlong 
Published: December 2021

Abstract
In order to settle the problem of UAV path planning under mountain, an algorithm which based on the combination of ant colony algorithm and beetle antennae algorithm is proposed. Three dimensional environment model is established and objective function is constructed. It used ant colony algorithm to initialize the search path and the particle coordinates of all the next steps are updated by the beetle antennae algorithm. The improved algorithm adopted a new step update rule to speed up the convergence of the algorithm and used third-order B-spline interpolation method to smooth the path. Simulation results show that improved fusion algorithm has faster convergence speed and high stability by comparing with other algorithms under the same conditions, which verifies its effectiveness.
The Model of Multi Limits of the Quantity of Electrons in Central Coulomb force Field
Authors: Tan Chengzhuo 
Published: December 2021

Abstract
Based on the theory of periodic bifurcation of iterative equation, a conjectural model of periodic bifurcation of number of electrons in a central Coulomb force field is proposed. After that with the help of the methods Zeng’s The Course of Quantum Mechanics and Wu’s Methods of Mathematical Physics, [1], [2] the wave function of the electrons under the approximate state is solved in the central Coulomb force field. By using the method of separating variables for solving partial differential equations and some transformation and construction techniques, the strict mathematical solution of the Schrödinger equation for the electron in the field of central Coulomb force is obtained, and the iterative formula of the level of electron number is given theoretically. And using MATLAB, the multi-limit model of electron number is simulated under different initial value problems, to explore the change of the limit with the initial value and the factors affecting the limit number to a certain extent. Some potential research value of this model is also proposed.
Characteristics of Cantilever Retaining Wall Composed of Upper Wall and Lower Wall by Physical Testing
Authors: Zhang Yaming , Chen Dongsheng , Liu Jinlong , Zhu Lei 
Published: December 2021

Abstract
Based on the finite element method, the earth pressure and deformation of the cantilever retaining wall composed of upper wall and lower wall are compared and analyzed. The results show that the maximum lateral displacement of the fill occurs near the top of the upper wall, the lower wall has the tendency of overturning to the free surface, while the upper wall has a certain deviation from the free surface. The vertical earth pressure acting on the heel plate of the upper wall and the lower wall presents non-linear characteristics. When the cantilever retaining wall composed of upper wall and lower wall is unstable, there are two slip surfaces in the filling. The first slip surface runs through the filling based on the heel plate root of the lower wall, and the second slip surface runs through the upper filling based on the heel plate root of the upper wall.
Room-Temperature Self-Healing Elastomer based on Van der Waals Forces in Air and under Water
Authors: Niu Pengying , Liu Beibei , Li Huanjun 
Published: December 2021

Abstract
With the development of flexible wearable electronic devices, researches on self-healing conductive materials have become prevalent. However, the self-healing performance of most conductive self-healing materials is commonly achieved by the external stimulus that may cause damage to the equipment. Pparticularly, these self-healing materials may lose the self-healing properties when exposed to a high-humidity environment. Here, we adopted two hydrophobic monomers (2-methoxyethyl acrylate and ethyl methacrylate) to obtain a self-healing elastomer that could display self-healing properties in air or under water though van der Waals forces. The quality and mechanical properties of the elastomer material could keep stable after stored under water for half a month. This elastomer material was capable of self-healing in different environments with self-repair efficiencies more than 50% in deionized water, strong acid solution and strong alkaline solution. The self-repair efficiencies were up to 77% at room temperature(T=25°C) and 64% at low temperature (T=-20°C) in air.
Magnetic-Electric Behaviors and Physical Properties of The Thin Films on ITO-Glass Substrate
Authors: Liu Xiaofen , Wang Xiujuan , Zhang Zirui , Cao Jin 
Published: December 2021

Abstract
Polycrystalline BiFeO3 thin films on ITO glass substrates were prepared by radio frequency magnetron sputtering using a Bi1.1FeO3 target. The samples which were annealed with different annealing conditions are pure without impurities. We measured the magnetic properties and ferroelectricity of the BiFeO3 films. The measurement results show that the magnetic and electrical properties of the BiFeO3 films are significantly different under different annealing conditions.
Reinforcement Design and Physical Testing of New and Old Cushion Cap of Existing Bridge
Authors: Yang Yongcheng , Wang Xianggang , Shen Yongli , Xin Xing , Zhang Zhengpeng , Wang Yegang 
Published: December 2021

Abstract
As an important part of bridge structure, pile cap plays an important role in its operation. There is a lack of sufficient research in the design and construction of the existing bridges, especially in the operation process of the river crossing bridge, there will be more security risks, so it is urgent to strengthen the bearing platform. Combined with the general design theory of bridge cap, considering the feasibility of construction and the difficulty of operation, the new and old caps are planted with steel bars to make them bear the common force. Aiming at the problem of insufficient bearing capacity, the cap reinforcement method is proposed, so as to improve the stability of the bridge. The research results can provide reference for similar bridge reinforcement projects in the future.
A study on micro-morphology and impacts of curing temperature on bond strength of interfacial transition zone through scanning electron microscope
Authors: Na Binbin , Yan Bin 
Published: December 2021

Abstract
The influence of curing temperature on the bond strength of ITZ was studied in this paper. It is found that, Increasing curing temperature can improve the bond strength of ITZ in the early age, but it will significantly decreases the growth trend of the bond strength. The micro-morphology characteristics were examined by the method of scanning electron microscopy, It was found that, the higher the curing temperature is, the more uneven the hydration products distribution of ITZ is, and also the looser the ITZ structure is.
Research on the Physical Characteristics of Hot-Pressed Sintering Preparing Self-Fluxing Filler by X-Ray Diffraction
Authors: Li Xiupeng , Long Weimin , Shen Yuanxun , Zhong Sujuan , Pei Yinyin , Li Yunyue 
Published: December 2021

Abstract
In this paper, Al-12Si self-fluxing filler metal ring was prepared with Al-12Si alloying powders and KAlF4 flux by hot pressed sintering (HPS) method. The microstructure and mechanical properties of the brazing alloy and the brazed 3003 aluminum alloy joint were investigated. The results showed that Al-12Si self-fluxing filler metal ring could be successfully obtained by HPS at 470°C using a pressure of 300MPa. The prepared filler metal ring was dense and defect-free and the microstructure was mainly composed of Si phase with KAlF4 flux grain uniformly distributed in the Al matrix. The 3003 aluminum alloy joint interface brazed by the prepared filler metal was also well bonded and no pore and defect was found. A quite high joint strength of 75MPa was obtained which is equal to the strength of joint brazed using commercial Al-Si self-fluxing wires prepared by hot extrude method. The results revealed that the filler metal rings fabricated by HPS process had great potentiality in brazing of aluminum alloy especially for the Al-Al pipes joining due to its high joint strength, low cost and the convenience for industrial application.