bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on large - scale in - situ pressurization test of steel composite support
Authors: Hu Qi , He pinpin , Fang Huajian , Xie Jiawen , Zhang Kai , Song Junguo 
Published: October 2019

Abstract
The reinforced concrete support as the horizontal internal support of the foundation pit engineering has the optimal effect in limiting the displacement of the surrounding structure, but the engineering cost is high, and the environmental impact is large when it is removed. In some of the foundation pits that meet the requirements, steel supports are used as internal support, which has the characteristics of economy, efficiency and green environmental protection. The restressed steel composite support is connected by high-strength bolts, which has a high strength and a wide application range than the traditional steel support joints. Through the normal axial compression test, the unconstrained axial compression test and unrestrained eccentric compression test were carried out on the composite support of section steel, the influence of steel composite support on the displacement of retaining structure under different loads is explored, and the deformation performance of steel composite support is also explored. The test shows that the displacement of the retaining structure changes linearly with the applied load, and most of it is elastic deformation, and the displacement of the retaining structure on both sides of the support has obvious side-angle effect; The test applied load far exceeds the total prestress value of the composite support of the steel, and the compression deformation of the composite steel support exhibits elastic deformation; The test results show that the steel composite support has strong adaptive stability and large safety redundancy value.
Experiment and numerical simulation of sinter cooling in annular cooler
Authors: Ma Shujie , Wang Jingfu 
Published: October 2019

Abstract
Based on the empirical constant value of the thermal physical parameters of sinter, this paper combines experimental measurement and finite element simulation to study the equivalent thermal conductivity of sinter and establish a heat transfer model suitable for the cooling process of sinter. The influence of the empirical value and the change value on the cooling process is analyzed by analyzing the thermal property parameters of the sinter. The effects of sinter size and inlet air temperature on the cooling process are investigated by using varying thermal physical parameters. The results show that the smaller the particle size is, the higher the inlet air temperature is, and the higher the waste heat utilization rate of the outlet heat exhaust gas is.
Leakage Analysis on Non-axisymmetric Gasket of the Shelltube Heat Exchanger Header
Authors: Zhang Xu , Zou Xianping , Zhu Kai , Zhu Zhenglong 
Published: October 2019

Abstract
This paper focuses the flanged static sealing structure of shell-tube heat exchange header, builds an static sealing model based on FEM(Finite Element Method),studies the effect of bolt preload and working medium load on the gasket actual contact stress. The results indicate that: an approximately linear relationship exists among the gasket contact stress, bolt preload and working medium load. When the pressure is gradually increasing, the flat end-plate’s outward convex deformation results in the decreasing gasket stress in the center and even leakage. After locating the above leakage reason, the flange gasket structure is improved, and the bolt distribution and bolt preload is adjusted accordingly. The problem of leakage has been solved, approves that the calculating method of gasket sealing is an effective approach.
Research on fractal dimension calculation method of machining surface based on wavelet transform
Authors: An Qi , Suo Shuangfu , Zhao Xingru , Shi Jianwen 
Published: October 2019

Abstract
Combining the multi-scale analysis ability of wavelet with the multi-scale self-similar feature of fractal, multi-scale wavelet decomposition of fractal contour, based on logarithmic wavelet spectrum, and then evaluating the fractal features of contour and calculating its fractal dimension, The calculation method of fractal dimension logarithmic wavelet spectrum of machined surface contour is compared with the calculation error of power spectral density method and structure function method. Finally, it is applied to the calculation of fractal dimension of actual machined surface contour, which shows its practicability.
Study on Mechanical and Electrical Coupling characteristics of Milling system based on CMAC-PID Compound Control
Authors: Tao Lin , Zhao Yue , Liu Aoxiang , Zhao Yuan , Zhao Jinfang , Liu Yefeng 
Published: October 2019

Abstract
Taking boring and milling machining center as the research object, analyze and optimize the dynamic characteristics of milling control system. Use Simulink software to create mathematical model and simulate the dynamic characteristics of milling control system. Based on the theory of CMAC, consider the theory of the CMAC-PID compound control in the way of M function in Simulink Control language. Apply the theory, calculate the relevant parameters of milling system and model its transfer function, and all the parameters are solved by CMAC-PID compound control in Simulink. Verify the optimization of milling control system, and obtains the method of optimizing the mechanical and electrical coupling characteristics based on the CMAC-PID compound control theory.
Portrait matching based on sift features
Authors: Li Xingxing , Luo Jun , Duan Chao , Yin Panpan , Zhi Yan 
Published: October 2019

Abstract
Image matching refers to identifying homonymous points between two or more images by a certain matching algorithm. For example, in two-dimensional image matching, by comparing the correlation coefficients of the windows of the same size in the target image and the search image, the central point of the window corresponding to the maximum correlation coefficient in the search area is taken as the key point. In this paper, SIFT operator is used for image matching. The experimental results show that the method can effectively match the target.
Effect of Annealing Temperature on Microstructure and Properties of 8011 Cold-rolled Sheet
Authors: Shi Chen , Wu Yongjun , Mao Daheng , Li Fan , Shen Ke 
Published: October 2019

Abstract
8011 cold-rolled sheets with a deformation of 78% were annealed at different temperatures. The effect of annealing temperature on the microstructure and mechanical properties of cold-rolled sheets were analyzed using metallographic microscope, SEM, microhardness testing machine and tensile testing. The results show that with the increase of annealing temperature, the degree of recrystallization increased, the distribution of particle size and precipitated phase were more and more uniform, the elongation of 8011 cold-rolled sheets increased gradually while the hardness, tensile strength and yield stress decreased constantly. When annealing at 350°C, the microstructure of 8011 cold-rolled sheets was fine and homogeneous equiaxed grain structure, and the anisotropy index was the lowest. The optimum annealing temperature of 8011 cold-rolled sheets was about 350°C.
Research on Formation of Oscillation Marks from Continuous Casting of Automobile Steel Plate and its Solidification Process Simulation
Authors: Zhang Hongwei , Jia Qiyang , Ren Tingzhi , Lv Jingru , Zhang Jianhao 
Published: October 2019

Abstract
This paper expounds that the influence of oscillation marks of steel billet on the fatigue strength and the tensile strength of steel plate used in automobile, and the mold model with meniscus in the Crystallizer was established by MSC.MARC software. The solidification law of the shell and the solidification process at the meniscus region are analysed through the temperature field simulation results, which validates that the solidification simulation results of the shell at the meniscus were consistent with the actual production. Changes of initial freezing point position at the meniscus at different drawing speeds are researched, Indirectly the relationship between the depth of oscillation marks and the drawing speed was analysed, At the same time, the relationship between the initial solidification point and the drawing speed was plotted.
Abnormal Judgment of Blade Machining Process Based on SVDD
Authors: He Shuai , Chen Fumin , Yang Yatang , Li Jianhua 
Published: October 2019

Abstract
Aiming at the problem of stability monitoring of blade processing, this paper proposes a method to judge the stability of blade machining process. The measured point deviation of the blade pattern can represent the processing quality of the blade. Firstly, the dimension of the normalized deviation is reduced by the kernel principal component analysis, and appropriate kernel functions and parameters can be determined. Eigenvectors of samples are trained by support vector data description, and the parameters of model are determined with false alarm rate. In addition, the radius of hyperspheres are calculated to obtain control limits. The example data is applied to verify the feasibility of the method. The experimental results show that abnormal fluctuation of blade machining process can be effectively detected by the method.
Design and multi-body dynamics analysis of a four-claw spherical stabilization platform based on Adams
Authors: Xue Shan , Liu Zhengbin , Zhang Zhen , Li Guangqing , Lv Qiongying 
Published: October 2019

Abstract
Airborne photoelectric stabilization platform is one of the most effective devices to isolate aircraft motion from tracking and scanning equipment. In order to make the airborne photoelectric stabilization platform lighter in weight and better in performance, a four-claw spherical stabilization platform is designed. The multi-body dynamic analysis of the four-claw spherical stabilized platform is carried out to verify whether the designed platform meets the functional requirements, that is, whether the four-claw spherical platform can isolate the movement of aircraft and whether the spherical platform can rotate around the pitch axis and azimuth axis. SolidWorks software is used to build a three-dimensional model of a four-claw spherical stabilized platform. Then simplify the three-dimensional model of the platform, import Adams software, carry out multi-body dynamic analysis of a four-claw spherical stabilized platform, verify whether the platform can meet the function. The analysis results show that the designed four-claw spherical stabilized platform can isolate the motion of the aircraft and rotate around the azimuth axis and pitch axis to meet the function, which provides a reference for the design of similar platforms.
Application Research of a Practical and New Intelligent Question Answering System
Authors: Zhou Hua , Tan Yaofei , Wei Luyang , Chen Gangyi , Peng Lin 
Published: October 2019

Abstract
Intelligent question-answering system (IQAS) can help users quickly retrieve the answers to the required questions which is currently a popular research direction of NLP. This paper combines the research of relevant scholars and the analysis of their advantages and disadvantages, and an intelligent question-and-answer system is designed, which can automatically generate a question-and-answer knowledge base based on a given document. It can retrieve the knowledge base and recommend answers automatically, quickly and accurately according to the keywords provided by users. The system realized text semantic understanding and analysis, and its MRR value reached a satisfactory 0.7381. At the same time, the paper extends an automatic answer text generation technology based on Seq2Seq model, which can be a useful supplement to the traditional question-and-answer recommendation generation strategy.
Augmented Reality Based Visualization Method for Spacecraft Cable Assembly Process
Authors: Chen Huajun , Chen Changyu , Sun Gang , Wan Bile 
Published: October 2019

Abstract
At present, the spacecraft cable assemble process has problems such as inconvenient process reading and great difficulty for process understanding. Based on the advantages of augmented reality technology, this paper proposes a visualization method for spacecraft cable assembly process to solve these problems. Firstly, the tracking method based on Vuforia and SLAM technology is used to improve the accuracy of registration while expanding the tracking range. Secondly, this paper adjusts and lightweights the spacecrafts design model, uses Unity3D to create visual guidance, and then deploys the prototype system to HoloLens. Finally, verifies the application in the cable assembly process of a certain type of spacecraft, which proves the advantage of the method based on the augmented reality.
Research on Three Kinds of Swing-plate Manipulators Based on Hydraulic Reclaimer and Non-standard Machine
Authors: Lei Zhao , Lai Hu , Hua Zhang , Ning Ding , Hua Chen 
Published: October 2019

Abstract
Aiming at the problems of low efficiency of hydraulic press reclaiming and the difficulty of realizing the diversification of reclaiming methods in our country. In this paper, three non-standard manipulators of hydraulic reclaimer are designed, and the modes of three non-standard manipulators are analyzed and studied. Using ANSYS workbench to simulate the modal parameters of one of the manipulators, the modal parameters and the actual performance of the manipulator are analyzed. The results show that the first order modal value is 2.0542 e-003Hz according to the modal value. At the same time, combined with the actual working conditions of the hydraulic press, the mode satisfies and is far greater than the fixed frequency value.
Research on Modeling of Equipment Damaging Casued by Environment Factor with the Disteibution of Weibull
Authors: Su Xiaobo , Gao Qi , Wu Qingchun 
Published: October 2019

Abstract
Working environment is one important factor to equipment failure. In order to quantity the environment influence to equipment failure, this paper qualitatively analyzed some environment factors’ effect to equipment failure and drew the graphs about the relationship between equipment failure and environment factors. Based on bathtub curve principle, progressively increasing curve and Weibull distribution principle which are basic theories in reliability engineering, this paper built a mathematical model about environment influence to equipment failure and put forward a calculating method to the unknown parameters in the model.
Node Design of Wild Unmanned Alert System Based on Dempster Shafer Evidence Theory
Authors: Li Jian , Pan Zhongming 
Published: October 2019

Abstract
Unmanned alert system is widely used in unattended surveillance, indoor security, battlefield situational awareness and wild fortress defense. However, due to the complex geographical conditions, poor information environment and various sources of interference in the wild, the design of wild unmanned alert system is more demanding. This paper took the design of the unmanned alert system nodes as the background, designed the pyroelectric infrared sensor, the microwave induction displacement module and the flame sensor. The algorithm used the Dempster Shafer evidence theory to fuse multi-sensor information, which realized energy-saving and stability of the wild unmanned alert system. Experiment shows that the node of wild unmanned alert system has strong anti-interference ability, and it can effectively realize the alert function.
Research on Smart Grid Load Forecasting Cloud Platform Based on Hadoop Architecture
Authors: Qian Lin , Xu Mingjie , Yu Jun , Zhu Guangxin , Wang Lin , Chen Haiyang , Mei Zhu 
Published: October 2019

Abstract
In view of the shortcomings and shortcomings of traditional smart grid load forecasting system, this paper uses Hadoop architecture to build cloud computing platform, optimizes the layout and architecture of the entire smart grid load forecasting cloud platform, and forms the main framework. The basic coordination model is used to carry out multi-level coordination and optimization service, and its practicability is proved by an example. Through the research on the framework of the smart grid load forecasting platform based on cloud computing, improving the level of load forecasting can deepen the application of cloud computing in power system, lay a solid foundation for smart grid dispatching and load balancing, and provide a strong guarantee for the stability analysis of online upgrade of the system.
Research of Co-Sn alloy as Anode material for lithium ion battery
Authors: Zhang Wenhua , Liu Ping , Zhang Xingwang , Ouyang Zhizhao 
Published: October 2019

Abstract
The CoSnx alloys with different atom ratio (x=2, 4, 8) were prepared by solid phase reduction reaction through mechanical ball milling. The structure and morphology were represented by X - ray diffraction (XRD) and scanning electron microscopy (SEM). the elctrochemical performance of the alloy as anode material of li-ion battery was investigated by assembling the analog battery.The experimental results reveal that the nanostructured amorphous CoSn4 shows a relatively high initial discharge capacity (430 mAh/g) and good cycling performance, as its capacity still maintain at 360 mAh/g after the 15th cycle, with a capacity retention ratio of 84 %.
Partial Study on the Genesis of Nucleosome Localization in Drosophila
Authors: Li Zehua , Ling Yongfa , Liu Xiaoyu 
Published: October 2019

Abstract
This paper has done some research on the nucleus localization of Drosophila in embryonic stage. It is found that the influence of different factors on the location of nucleosomes is not the same. It includes not only the physical properties of DNA, such as DNA twist, roll, tilt, and slide, but also other factors, such as DNA bending ability, CG content, transcription factors, RNA polymerase, and others. Here we carry out regression analysis on these factors, we finally get the weight of these factors in the nucleosome positioning process fitting by LASSO algorithm.
Research on the planning and optimization model of regional integrated energy supply system
Authors: Ye Jiawen , Wu Haoyu , Wang Yuqing , Zeng Ming , Wu Shengyu , Wang Shiju 
Published: October 2019

Abstract
Integrated energy system is an important development trend of energy system in the future. As an important form of integrated energy system in local areas, regional integrated energy system has the complex characteristics of multi-energy supply. Therefore, this paper studied the planning model of regional integrated energy supply system. Firstly, the planning index system of regional integrated energy supply system was constructed. Secondly, based on the planning index system, considering the multiple constraints of power grid and heat grid, a regional energy supply system planning model was established to realize the minimum comprehensive cost of investment, operation, economy and environment. Finally, the example shows that the proposed planning model has better economic performance than the traditional planning scheme.
Research on Heat Transfer in High Temperature Garments
Authors: Wan Yi-Fei , Lin Peng-Yi , Li Hao-Yi , Dai Chang-Ping 
Published: October 2019

Abstract
This paper describes the Law of heat transfer between the layers of material and a method for determining the thickness of layers of material parameters of a high temperature protective clothing. Three important choice of protective clothing material and the air gap layer as the research object, based on the Fourier law and the energy conservation law to establish second order partial differential equation, solving the Crank-Nicolson method by second order partial differential equation, derived temperature, time, the relationship between the thickness. Finally, in the case where the heat transfer ANSYS software simulation under the above conditions, a comparative analysis with calculated transfer law, the error is 1.2%, higher accuracy results.
Wireless Charging Self-Starting Electric Trolley
Authors: Zhao Fengyu , Wu Yingyue , Qi Fangxu , Wang Xinyu , Zhu Leifeng 
Published: October 2019

Abstract
Wireless charging electric car includes: wireless charging module (transmitting end, receiving end), used to wirelessly charge the electric car to charge the farad capacitor installed on the car, so that the car can walk in a horizontal straight line. Farad capacitor for energy storage devices after wireless charging. The self-starting circuit is connected to the farad capacitor and is used to judge the automatic driving when the charging is disconnected. Through this car model construction, the wireless charging self-start mode is realized, which solves the complexity of manual operation and simplifies operation.
A Design of The Underwater Acoustic Beacon Detection and Location Method
Authors: Qu Jiasheng , Han Hui , Yang Shanshan 
Published: October 2019

Abstract
Aiming at the search of the underwater acoustic beacons used in aircraft or ship parameter recorders, this paper mainly introduces the underwater acoustic beacon detection and location method of the short baseline array system. According to the signal form of underwater acoustic beacon, this paper discusses the basic algorithm and the engineering algorithm applied in this system. In theory, the basic algorithm is a necessary algorithm for short baseline array to calculate target azimuth, which including the two-element linear array direction measurement algorithm, two-direction cross-location algorithm and the virtual direction discrimination algorithm. In addition, according to the experience of offshore operations, this paper introduces the engineering practice methods such as the angle measurement, the data extraction, the location ray screening and the location ray starting point coordinate calculation. The combination of engineering algorithm and basic algorithm can effectively reduce the impact of the test equipment and environment, and improve the accuracy of underwater acoustic beacon detection and position, which has been tested in actual operation at sea.
Discussion on the Process of Preparing Ammonia by Pyrolysis of a Urea
Authors: Su Jingcheng , Xue Fangming , Chen Feng , Sun Yiqing , Liu Xiuru 
Published: October 2019

Abstract
The process of preparing ammonia gas by urea pyrolysis is often used in denitrification of coal-fired power stations. Because of its safe and stable operation and low investment price, it is widely studied and used. This paper analyses the equipment and site layout of ammonia steam process by conventional urea pyrolysis. Give professional advice on new or rebuilt power plants.
Comparison of Polar V800 with Healink R211B for the Purpose of Analyzing Heart Rate Variability
Authors: Xu Hong , Chen Jingwen , Dai Jingyue , Lin Huiting , Zhang Genxuan , Shi Bo 
Published: October 2019

Abstract
Heart rate variability (HRV) is generally accepted as the best method to evaluate the function of the human autonomic nervous system. This paper compares the differences between the Polar V800 and the Healink R211B in the application of HRV analysis. Twenty-nine healthy college students participated in the study. The data were recorded simultaneously by both devices from all the subjects in a resting state. After being processed, the RR interval (RRI) data for 26 of the cases from the two devices were imported into the Kubios HRV software and were approximately consistent in regards to the HRV parameters. There was no significant difference (r > 0.99, p > 0.05) between the two devices except for the α1 parameter (p = 0.021). For the other 3 cases, the Polar V800 RRI could not be corrected due to partially missing data. Therefore, the HRV analysis and comparison were not conducted. The results indicate that the Polar V800 and the Healink R211B combined with Kubios HRV software can be used for HRV analysis in the time domain, frequency domain and for partial nonlinear parameter analysis, except in cases where data were missed by the Polar V800. However, it should be noted that approximately 10% of the samples from the Polar V800 have more RRI values missing so the entire sample data could not be used for HRV analysis.