bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of Remote Water Meter Reading System Based on GPRS Technology
Authors: Cao Xunjie 
Published: August 2020

Abstract
With the rapid development of electronic technology and information technology, the management level of metering instruments continues to improve, and people hope that metering instruments can be automated as soon as possible. Therefore, it has become inevitable to realize the automatic transcription of various meters. The shortcomings of the traditional manual copying method have caused a certain economic loss to society. At present, most remote meter readings use SMS communication to report regularly. This meter reading method is relatively backward, high in cost, poor in real-time, and unable to accurately monitor the operation of on-site water meters in time. Therefore, this article first analyzes the advantages of GPRS and the characteristics suitable for remote meter reading of water meters, and then designs the overall structure of the remote meter reading system, and introduces the core implementation part of the remote meter reading software in detail, and realizes the design of remote meter reading system based on GPRS.
BIM-based Technology Implementation on Quality Management in Construction Engineering
Authors: Wang J Z , Wei G A 
Published: August 2020

Abstract
The quality management is an important indicator that affects building projects value and practicability on peoples’ work and life. When building quality cannot reach the standards, it would bring personal safety and property into danger. BIM-based technology has been proved that it can effectively provide specific solutions to deal with quality issues and improve quality management efficiency in the entire project life cycle. It is a significant technology to upgrade the traditional construction industry into automation and intelligence through stimulating specific construction works into a visual reality. Therefore, quality management efficiency can be enhanced on labour, material and equipment sources through BIM-based system. This paper would analyse how BIM-based quality management methods can improve the efficiency and accuracy of building project quality issues.
Research on on-line monitoring technology of IGBT module junction temperature based on Kalman filter
Authors: Zhang Yubin , Wen Yingke , Lin Ruan 
Published: August 2020

Abstract
IGBT is the core device of energy conversion and transmission, commonly known as the CPU of power electronic devices. However, with the continuous improvement of IGBT power density, its reliability is increasingly concerned by industry and academia. The failure of IGBT module is mainly related to the average junction temperature and the amplitude of junction temperature fluctuation, and with the increase of the amplitude of junction temperature fluctuation, the number of failure cycles of IGBT module will sharply decrease. It can be seen that the change of junction temperature in power module is the key to affect its fatigue life. In this paper, an on-line junction temperature monitoring method based on Kalman filter is proposed, which combines the actual temperature measured by IGBT module with the junction temperature obtained by RC thermal network, so it has the advantages of high reliability and real-time on-line monitoring. The simulation results show the effectiveness of the method.
Research on Two-dimensional Fabry-Perot Ultrasonic Sensing Technology
Authors: Liu Hui , Li Simian 
Published: August 2020

Abstract
According to the laser interference method, a two-dimensional Fabry-Perot fiber optic sensor is used as the core, and the difference between the propagation speed of the ultrasonic transverse wave and the longitudinal wave in the solid medium is used to measure the ultrasonic wave propagating in the solid to realize the ultrasonic positioning. An F-P interference cavity is formed with a coated quartz film, the end face of the fiber end, and air. At the same time, the cantilever beam design can be used to simultaneously extract longitudinal ultrasonic waves based on Fabry-Perot cavity interference and transverse ultrasonic signals based on cantilever fibers in a solid rod-shaped acoustic waveguide. In this paper, the position of the ultrasonic wave is determined by the difference of the longitudinal and transverse ultrasonic wave speeds in the detected ultrasonic signals.
Grey relational analysis to explore the culture factors of Haematococcus pluvialis
Authors: Duan Huabiao , Cui Shigang , Zhang Yongli 
Published: August 2020

Abstract
Astaxanthin has superior antioxidant capacity, and Haematococcus pluvialis is recognized as the most powerful organism to accumulate natural astaxanthin in nature. In artificial culture, environmental factors can affect the yield of astaxanthin. In order to reduce blindness in the cultivation of Haematococcus pluvialis and effectively increase astaxanthin production, grey relational analysis was used to calculate the correlation between the culture factors and the growth condition of Haematococcus pluvialis, and advantage analysis was performed to investigate the influence degree of different culture factors on the growth and astaxanthin accumulation of Haematococcus pluvialis. The results showed that the effects of light intensity and temperature were greatest during the proliferative culture stage, while the effects of temperature and light duration were greatest during the astaxanthin induction stage. The application of grey relational analysis also provides a convenient reference tool for the design of research to improve the yield of astaxanthin induced by Haematococcus pluvialis, and other culture factors affecting astaxanthin yield can be analyzed and compared using this method, providing more ideas for optimizing culture methods and developing culture devices.
Design and Finite Element Analysis of composite PTFE Compression Packing with C-shape Structure
Authors: Tamirat A Wasihun , Suo Shuangfu , Shi Jianwen 
Published: August 2020

Abstract
Gland packing is a sealing device in mechanical equipment like pumps. With the development of science and technology, new materials and new structures have appeared, giving new vitality and advancement to the packing seal. In the process of pump operation, the major problems of gland packing seals are the wear of the filler material and leakage of media through the interface. Hence, In order to improve the sealing performance of a gland packing, Different factors including design structure, the number of packing rings, type of filler material, operating condition like temperature, pressure and speed of shaft can be considered. In this study the finite element analysis of the packing seal is carried out, and the axial stress distribution, bottom pressure and friction moment of the packing seal are obtained according to its design structure and stress condition. Furthermore, the results of finite element analysis are verified by experiments.
Facial expression recognition based on CNN
Authors: Wang Mingjie , Tan Pengcheng , Zhang Xin , Kang Yu , Jin Canguo , Cao Jianying 
Published: August 2020

Abstract
Facial expression recognition usually can be defined one of the important research in the field of AI and pattern recognition. Facial expression contains rich invisible information, which can help to understand human emotions and intentions, which has great research value. Aiming at solve problems that usually happened such as low recognition accuracy and weak generalization ability of traditional facial expression recognition methods, this paper introduces the theory of the convolution neural network and establishes the convolution neural network model to realize facial expression recognition. Using the crawler to crawl the network image data and using the Viola-Jones algorithm to detect the original data set, after screening, the face expression database is finally established. The convolution neural network model is applied to face expression recognition of the database. We can find that this method can effectively recognize facial expression, and provides a new way to solve this problem.
Controlling the False Discovery Rate via symmetrized data aggregation based on SLOPE
Authors: Guo Yihe , Zi Xuemin 
Published: August 2020

AbstractThe symmetrized data aggregation (SDA) method has obvious advantages in controlling false discovery rate (FDR) under dependence, but it is affected by data sparsity level, signal amplitude and feature correlation structures. The FDR control becomes less accurate due to the additional estimation errors. In this paper, we expand the symmetrized data aggregation (SDA) filter by using sorted L-one penalized estimation (SLOPE) method, and in comparison with SDA, SDA-SLOPE method can estimate FDR more accurately and improve the true discovery rate (TDR). Through simulation study, it is found that SDA-SLOPE can adapt to the changes of data sparsity, signal amplitude and feature correlation, and the robustness and effectiveness of this method in FDR control are verified.
Optimization design of torsion beam structure of car based on fatigue life analysis
Authors: Yang Sen , Zhang Gongxue , Niu Gugen , Tuo Yinfeng , Ma Zhi 
Published: August 2020

Abstract
Taking the torsional beam of the car as the research object, the fatigue life of the torsional beam is analyzed through the simulation experiment, and the optimization scheme is selected according to the life of the torsional beam. Firstly, eight component thicknesses are selected as design variables by Plackett-Burman experimental design method, and the radial basis function neural network approximate model of the beam is established. Taking the maximum equivalent stress of the beam as the optimization objective, the beam mass, and the maximum deformation as the constraint conditions, the multi-objective optimization is carried out, and then two new structural design schemes are carried out for the parts with a rich life. The optimization results show that the maximum deformation is reduced by 15.9%, the maximum equivalent stress is reduced by 10.1%, and the overall life of the beam is extended by 40.6%.
Research on suppression measures of ferromagnetic resonance based on ATP-EMTP
Authors: Wu Weili , Zhang Tianming 
Published: August 2020

Abstract
Aiming at the electromagnetic transformer of a 35kV substation in a certain area, a simulation model of ferromagnetic resonance based on ATP-EMTP software was established. Several methods of suppressing ferromagnetic resonance overvoltage were analyzed, and it was found that the harmonic elimination device could not completely suppress the occurrence of ferromagnetic resonance, and improvements are proposed based on this.
Car headlight steering and follow-up mechanism design
Authors: Sang Kang , Zhang Shaoguo 
Published: August 2020

Abstract
In order to reduce the driving problem caused by insufficient light when driving and turning, it is necessary to design the following steering headlamp, so that the driver can see the road information in front of him in time and make a timely judgment. This paper firstly determines the overall design of the following steering light, analyzes and selects the following steering structure of the main structure of the headlight, and completes the design of the transmission scheme. Finally, the design can realize the following steering of the headlight.
Optimal design of the gear transmission system based on the modal response surface method
Authors: Tong Cao , Wang Zhen , Wang Jieyu 
Published: August 2020

Abstract
In order to conduct the lightweight optimization design of the gear transmission system, this paper uses the experimental design response surface method to construct the modal response explicit function of the gear transmission system based on the modal analysis results. Furthermore, the optimized design model of the gear transmission system (including gears, gear shafts, and bearings) is established on the base of the results of the modal response surface, and the optimized design model is solved and optimized through the Fmincon toolbox of MATLAB. By comparing the optimized results, it is shown that the optimization design method proposed in this paper can achieve the optimal design of the gear transmission system, which is of great significance to the optimization design of mechanical engineering.
Study on the Safety for Five-axis CNC Machine with A–C Dual Rotary Tables
Authors: Li Tiren , Cai Liping , Yang Yun , Muhammad Babar , Tuo Yinfeng , Yan Bobo 
Published: August 2020

Abstract
In order to solve the problem of interfering and processing blinds in the machining of five-axis machine tools with A-C dual rotary tables, the actual situation of NC machining was analyzed. Starting from the cause of problem, two aspects were selected to avoid the interference of the tool, handle or spindle parts with non-processing parts. One is to set the CAM software to control the tool spindle. Another method is to calculate the safe height of the fixture to lift the workpiece. Then the problem of processing blind spots was solved through optimization of the A, C rotation angle to rule A angle value was zero or negative. Finally, the VERICUT software simulation and example machining were used to verify great practical value that these three methods promotes the safety of five-axis machine tools with A–C dual rotary table.
Symmetry breaking of plasma induced by pressure in PIG ion source
Authors: Ju Shaojia , Li Jie , Lu Jie , Zhou Xiaohua 
Published: August 2020

Abstract
In this work, we use the COMSOL software to study the discharge characteristics of argon in the Penning ion gauge (PIG) ion source driven by DC voltage and based on a two-dimensional fluid model. The distribution of the electron density under different pressures is investigated. Our results indicate that, although the ion source has the symmetric geometry structure, the distribution of the electron density will lose the symmetry due to the change of pressures.
Systematic analysis of rationalization of mechanical design in mechanical manufacturing process
Authors: Sun Feng 
Published: August 2020

Abstract
The use of mechanical equipment instead of labor is the core link of the rapid development of modern industry, which can greatly improve the efficiency of manufacturing and effectively reduce the risk of manufacturing, but at present, there is less systematic research on the design of mechanical equipment, so it is difficult to rationalize the design of mechanical equipment from the aspect of mechanical manufacturing technology, which can easily lead to the reduction of the precision of mechanical equipment. In view of this, the paper studies the importance of the rational design of mechanical manufacturing, and studies the process flow of mechanical manufacturing. On this basis, the rational mechanical design based on mechanical manufacturing process is systematically analysed, and the rational mechanical design strategy is formulated provided theoretical support for the manufacture of machinery and equipment.
Modeling and simulation of multi-footed wheel robot based on ADAMS
Authors: Liu Cheng , Zhao Dong , Huang Weitao , Meng Xianjiang , Du Wenhao 
Published: August 2020

Abstract
To reduce the complex mechanism and difficult control of multi-legged robot, the overall design of the new multi-footed wheel robot was carried out according to the previous research results—multi-footed wheel mechanism. A new multi-wheeled robot model was built by using SolidWorks. External data planning was carried out for dynamic force data curve of the motor. In ADAMS, the kinematics characteristics and data of the multi-footed wheel robot were obtained through simulation analysis of the model by interpolation method. The rationality of mechanism design and driving stability were verified by simulation analysis.
Multi-node Task Scheduling Algorithm for Edge Computing Based on Multi-Objective Optimization
Authors: Shi Zheng , Shi Zhiguo 
Published: August 2020

Abstract
In edge computing, nodes are highly dynamic and resources are unbalanced. Due to the need to ensure near real-time response of tasks, when task scheduling is required, the resource availability of the target node needs to be estimated. It prevents the node’s computing resources from being exhausted or the node from failing or going offline, when the task is pushed to the target node. In this paper, by studying multi-node task scheduling technology, a multi-objective optimization model is established, while considering the impact of completion time, energy consumption and load balancing on task scheduling. The task scheduling problem is transformed into a bidding model, and the offloading location of subtasks is determined in real time to meet the requirements of delay-sensitive tasks. Finally, simulation experiments are used to obtain the availability of the technology for multi-node task scheduling, which provides new ideas for task scheduling in edge computing.
Simulation of TD-LTE planning based on ray tracing model
Authors: Simin Ma , Qiang Liu , Jiang Yu , Qing Tian 
Published: August 2020

Abstract
Aiming at the problem of the network optimization of the signal base station in the urban environment, the ray tracing algorithm is used to model the urban cell and the wireless channel. By calculating the reference signal power of the receiving equipment, the received signal strength of each position in the cell radiated by different base stations is obtained. On this basis, the accuracy of calculation is verified with the measured data, and the countermeasures to solve the problem of poor channel coverage are given.
Research on Reading Subject Recommendation of Library Based on Data Analysis
Authors: Hu Jianfei , Shao Hua , Tang Jinling , Zhang Shuhong 
Published: August 2020

Abstract
In the era of big data, users’ demands are increasingly diversified and personalized. Digital library introduces user portraits to establish intelligent reading recommendation system, which can comprehensively grasp users’ dynamic demands and form accurate and intelligent resource recommendation service mode. This paper introduces the characteristics and application advantages of user portrait, and analyses the methods of user portrait in Digital Library under the big data environment. On the basis of in-depth analysis of library book retrieval function, this paper makes clear that the library subject reading recommendation system includes the modules of data collection, recommendation engine, front-end display and background management. The design and implementation of the recommendation system are introduced in detail. The research results of this paper have certain practical significance for the exploration of the recommendation system of university library.
Secure beamforming design of SWIPT relay network with multiple users and eavesdroppers
Authors: He Lu , Li Taoshen , Baber  , Wang Zhe , Lu Mingyu , Shi Anni , Zhu Qing 
Published: August 2020

Abstract
This paper studies the secure beamforming design for simultaneous wireless information and power transfer (SWIPT) in a amplify-and-forward (AF) relay networks with multiple users and eavesdroppers. Each user node adopts the power splitting (PS) scheme to decode information and harvest energy simultaneously. Our objective is to minimize the total relay transmit power under the constraints of secure transmission rate and energy harvesting requirements by jointly optimizing the beamforming matrix, artificial noise covariance matrix and PS ratios. For this non-convex problem, we propose a two-stage optimization approach to convert the original problem into two sub-problems. The first subproblem uses semidefinite relaxation (SDR) technique to transform the original problem into a convex problem, and then finds the optimal solution of the second subproblem through k-dimensional exhaustive search algorithm. Furthermore, we also propose a low complexity suboptimal solution scheme based on particle swarm optimization (PSO) algorithm. Simulation results show that the proposed scheme saves transmitting power and achieves better performance than other schemes.
Electrospinning of Flexible Conjugated Polymer Nanofibers with Efficient Luminescence and Electrical Conductivity
Authors: Chen Yani , Wang Jinjie , Zhang Shengdong 
Published: August 2020

Abstract
Herein, we have successfully applied direct electrospinning method to rigid copolymer F8T2. The electrospun F8T2 nanofibers exhibit high anisotropy, strong photosensitivity and remarkably improved luminescence and electrical conductivity compared to spin-coating analogue. Our work provides a promising avenue for flexible and high-quality display applications.
Overview of Electromagnetic Compatibility in Automotive Integrated Circuits
Authors: Zhang Jie , Zhang Xu , Kai Jiang Guo , Ming Liu Hai , Fan Yan 
Published: August 2020

Abstract
This article summarizes the current development situation of automotive integrated circuits, the origin of relevant domestic and foreign standards AEC Q100, IEC 61967, IEC 62132. In addition, this article introduces in detail the test methods of IEC 61967 and IEC 62132 standards, that is radiated emissions, radiated immunity, conducted emissions, conducted immunity, and gives a test block diagram of the relevant test methods. Finally, this article summarizes the status of domestic integrated circuit electromagnetic compatibility testing and standards
Design of DSSS communication teaching assistant system
Authors: Li M M , Dong L Y , Tang L L 
Published: August 2020

Abstract
Based on LabVIEW, the DSSS communication system under TCP/IP protocol is developed. It uses dual frequency USB wireless network card with a low price to build the wireless communication channel between PCS. The transmitter can generate spread spectrum signals with different time delays of different users’ data which could be used to simulate the multipath propagation in mobile communication. The receiver uses different m sequences with different time delays to despread the received signal. The system can display the time domain waveform comparison and power spectrum comparison before and after processing, as well as the bit error rate under different parameters. They play a very good role in theoretical analysis and verification. The use of teaching assistant system is conducive to improve students’ interest in study and design.
Design and Application of a Series and Parallel-summation Logarithmic Video Amplifier
Authors: Tao Dongxiang , Tang Jinyuan , Gao Wei 
Published: August 2020

Abstract
Starting with the concept of logarithmic video amplifier, this paper mainly derives the transfer functions of different logarithmic video amplifiers. The practical application of logarithmic video amplifier in the radar warning receiver is designed, and three pieces of conclusion about logarithmic video amplifier in RWR have been reached. Firstly, logarithmic transformation is completed for obtaining the azimuth information. Secondly, compressing the dynamic range is realized so that to the subsequent circuits signal processing becomes easier. Thirdly, the signal is amplified for improving the sensitivity of the receiver. A three-parallel-summation and single-series logarithmic video amplifier is used in a RWR so its direction finding precision is up to 8°, its dynamic range is up to 140dB, its sensitivity is up to -80dBm and its technique is in a higher level.