bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of Rotor Grounding Protection Action of Large Synchronous Condensers
Authors: Tang Xiaozheng , Zhao Hongfei , Jiang Mengyao , Ma Hongzhong , Liu Yidan , Zhao Shuai , Li Chengying 
Published: November 2019

Abstract
Rotor Grounding protection of synchronous condensers in a converter station of Jiangsu province acted on September 24, 2018. The burning loss of primary side of synchronous transformer was found by accident investigation. Based on the theory of rotor grounding protection and fault cause, the correctness of rotor grounding protection of injection is verified. Meanwhile, the unstable grounding fault caused by the synchronous transformer was further studied. Based on the analysis of fault recording waveform of converter station, this paper proposes an improved scheme for the rotor grounding protection logic. Compared with the traditional rotor grounding protection logic, it can avoid the situation that the fault cannot be removed in time because of the unstable grounding fault. It can provide a reference for the protection of the excitation system of the new large-capacity synchronous condensers.
Research on Load Collection Technology of Tractor Frame
Authors: Zhu Shumin , Yuan Zhengwen , Sun Liang 
Published: November 2019

Abstract
A convenient and feasible tractor frame external load collection technology is proposed in this paper. Based on the frame structural and force characteristic, the sensors for the load measurement are designed, and the mathematical relationship between the loading force and the sensor output voltage and the displacement signal is obtained. On this basis, the theoretical calculation model of the frame external load is established. Based on the dynamic test load spectrum data of the frame, the virtual strain at the locations (L1 and L2) is obtained through simulation. The comparison between the virtual strain and the actual strain shows that the frame external load data is reasonable, which proves that the load collection technology is credible and can provide data support for tractor design and optimization.
Research and development of surface heat flux sensor for high speed aircraft
Authors: Wanqing An , Xiaoning Liu , Yue Zheng , Xincheng Xu , Xiaoyuan Yang 
Published: November 2019

Abstract
A water-cooled high temperature and high heat flow sensor was developed to meet the requirements of high heat flow measurement under ultra-high temperature conditions on the surface of high speed aircraft. This type of sensor is based on the measurement principle of circular foil heat flow sensor. Cooling water is introduced through structural design optimization to ensure that the structure, measurement accuracy, sensitivity, linearity and other indicators of the sensor do not change at ultra-high temperature of 1600°C, so as to achieve extremely high heat flow measurement on the surface of the aircraft. Through the test verification, the heat flow sensor can withstand 1600°C, heat flow measurement range up to 1000KW/m2, measurement accuracy is better than 5%.
Synchronization Control and Circuit Implementation of Fractional-order Rabinovich Hyperchaotic System
Authors: Lei Tengfei , Yan Tingyang , Fu Haiyan , Wang Yanling 
Published: November 2019

Abstract
In this paper, a synchronization controller is designed for fractional Rabinovich hyperchaotic system. The fractional Rabinovich hyperchaotic system is solved and the phase diagram is drawn by improved Adomian decomposition method. At the same time, an adaptive synchronization control method is proposed based on Lyapunov stability theory of fractional nonlinear system. Multisim software is used to simulate the synchronization controller. The simulation results show the effectiveness of the control strategy.
Research on a High Reliability Multi-Controller Deployment Method
Authors: Gao Hanghang , Wang Xiang , Zhao Shanghong , Zhang Kun , Wang Guodong 
Published: November 2019

Abstract
In the software-defined aeronautical information network architecture, a multi-controller deployment scheme was proposed for the control plane scalability problem, which includes two phases: cluster domain partitioning and intra-domain deployment controller. An improved k-means algorithm was proposed in the cluster domain segmentation phase, which can effectively avoid discrete points from becoming cluster center. When the controller was deployed in the cluster domain, the minimum failure rate of the control path in the network was targeted, and an improved discrete particle swarm optimization algorithm was used to solve the problem to obtain effective control of the network. The simulation results show that the algorithm can effectively reduce the failure rate of the control path based on the reasonable division of the cluster domain. For example, when the number of controllers was increased from 3 to 15, the total failure rate was correspondingly reduced from 0.242 to 0.092, and good results are obtained. This solution provides a new way to solve the problem of multi-controller deployment under dynamic and large-scale networks.
Reduction of Power Consumption in Norflash Memory Based Wearable Electronics with Improved LRU Algorithm
Authors: Li Yueting , Leng Qunwen 
Published: November 2019

Abstract
Norflash storage is a very important memory module for the practical application in the smart wearable electronics. For the versatility and complexity of its functional applications, it is highly demanded to build Norflash flash devices in the system. The Norflash memory devices have advantages in terms of the fast transmission speed, small volume, and good stability, when the algorithm calls the storage module to record the data and read user inquired storage data. Each startup of access in the storage module will cause a lot of power consumption. The improved Least Recently Used (LRU) algorithm is implemented to the Norflash memory device of the intelligent wearable electronics in order to reduce the power consumption in this work. The type M29F010B of ST’s chips is used for this investigation. The interface design method of the chip is analyzed in details. This approach reduces the number of accesses in the wearable electronics devices while reading from the recorded Norflash pages in the memory, comparing with the ordinary storage methods under the original operations. It shows that the improved LRU algorithm could effectively reduce the system power consumption and therefore to enhance the battery efficiency up to 8.8%.
Execution process monitoring technology for electronic assembly production
Authors: Li Huaidong , Zhang Niansong , Wang Aiming 
Published: November 2019

Abstract
With the increasing demand for the patterning and refinement of electronic components, the structural design of electronic products is complicated, which in turn increases the complexity of electronic assembly production. Therefore, the traditional production execution monitoring information cannot meet the current requirements for assembly execution monitoring. This paper proposes process monitoring technology for electronic assembly production, including the execution process quality monitoring technology for electronic assembly production and the visual monitoring technology based on electronic assembly production instant Kanban. The two technologies achieve the refined management of electronic assembly production and the control of the execution process.
Exploration and Practice of Informatization Means in the Quality Supervision of College Classroom Teaching
Authors: Li Shijin , Shi Ting , Kuang Jinyun 
Published: November 2019

Abstract
Constructing the monitoring system of teaching quality in colleges and universities is an effective and effective means of reforming higher education. The monitoring of classroom teaching is an important part of the monitoring system of teaching quality in colleges and universities. In this paper, the artificial intelligence technology at the forefront of information technology in recent years is applied to the classroom teaching monitoring in colleges and universities. From pre-class attendance to classroom state, information and means are used to monitor students and teachers in all aspects. Using machine learning related algorithms to analyze attendance and classroom state data and final grades, and improve the quality of classroom teaching quality monitoring. This expectation provides a certain reference for China’s higher education reform.
Legal Creation of Smart Contracts and the Legal Effects
Authors: Liu Yang , Huang Jincheng 
Published: November 2019

Abstract
Smart contracts are software codes based on the Blockchain technology which are involved in the field of information technology. The Blockchain smart contract is still in the contractual scope in nature, although its origin and automatic performance functions are different from existing contracts, but it can be identified as a typical unnamed contract. Therefore, at the legal level, a smart contract is a new form of contract that can automatically and automatically perform all or part of the contract. While discussing the technical aspects of smart contracts, we cannot ignore the relevant issues at the legal level. Smart contracts are developments and innovations in the form of traditional contracts. Smart contracts exist in electronic form and automatically fulfill contracts through software that is accurately encoded on the Blockchain. How to create smart contracts according to law and evaluate the legal effect of smart contracts are the main research issue of this paper.
Flow redirection based MPLS label algorithm in SDN
Authors: Wang Lisheng , Yi Peng , Jiang Yiming , Gu Yunjie , Ding Yuehang 
Published: November 2019

Abstract
Aiming at the problem of congestion of flow table caused by limited performance of data plane TCAM in Software-Defined Networking (SDN), an MPLS labeling algorithm based on flow redirection is proposed. The algorithm utilizes the source node switch flow redirection and the path switch to decentralize the MPLS label, occupies a part of the data link bandwidth to alleviate the problem that the TCAM update flow table rate is too slow, and can increase the system switch load. Compared to the existing method, the link load is reduced by up to 60% and the flow entry insertion delay of nearly 90% is increased, and the system capacity is increased by up to 200%.
A low-cost authentication technology of car key based SIMO-VLC
Authors: Yang Fan , Jiang Kui 
Published: November 2019

Abstract
With the wide application of software radio technology platform, the traditional authentication technology of car key based on radio is no longer reliable. In this paper, a low-cost SIMO-VLC (single input multiple output visible light communication) system is designed to meet the needs of automobile key authentication, which effectively improves the authentication safety performance of automobiles. Furthermore, the hardware platform of the SIMO-VLC system was presented. Finally, we finished the actual test of bit error rate for scenarios with different colours and different distances in the experiment. The experimental results demonstrate that this technology has better communication reliability in the range of 5-180cm with blue light source.
SOC Estimation of Modular Lithium Battery Pack Based on Adaptive Kalman Filter Algorithm
Authors: Cai Zhi Duan , Xu Jing Yun , Yue Sun Xiao , Quan Li Di 
Published: November 2019

Abstract
Lithium battery state of charge (SOC) is a core parameter in battery management systems. In order to suppress the influence of noise characteristics on the accuracy of SOC estimation, this paper proposes an adaptive kalman filter (AKF)algorithm with variable noise variance based on the battery equivalent circuit model. In order to improve the accuracy of SOC estimation, the algorithm estimates the noise variance online and applies the noise variance estimation to kalman filter iteration process. Aiming at the modular structure of the battery pack, a segmentation variable weighting coefficient algorithm is proposed to estimate the SOC value of the entire battery pack. Based on the simulation platform of matlab, this paper carries out experimental verification and analysis. The results demonstrate the effectiveness and superiority of the algorithm.
Analysis on the Application of artificial Intelligence in classroom
Authors: Qi By Wang 
Published: November 2019

Abstract
With the continuous development and strength of information, the development of artificial intelligence has also moved towards a new stage, gradually living, but also only applied in a few fields and a few regions. Therefore, this paper puts forward a tentative idea whether artificial intelligence can be used in our classroom in the near future. With the smart phone, IPD and other intelligent items in the life of more and more widely used, its simplicity and intelligence, so that all the young and old, the use of a wide range of people, and easy to accept. With the diversity of modern life, the needs of students in the new era are becoming more and more widespread, while the traditional classroom teaching mode is being issued. Birth change, but the form is still relatively single, so for the traditional classroom, intelligent classroom will show a great advantage. It is possible to make students understand the content of the course before the beginning of the course by simulating the form of the real class, and choose the style and form of the course according to the students’ ability and interest in the learning process. In the era of the vigorous development of artificial intelligence, the development of intelligent classroom and intelligent classroom will not be underestimated, and intelligent classroom will also play a great role in the development of life in the future.
Application and Implementation of Steinmetz Solid
Authors: Zhang Lintong , Chu Jixun , Li Na 
Published: November 2019

Abstract
This article will start from how to calculate the volume of Steinmetz Solid by double integration, and expand to formation, cross section and unfolding of it by Matlab in a brand new way, in order to explore the internal structure and application. Further, we expand to polygonal Steinmetz Solid by Matlab to acquire more comprehensive understanding and mastery of it.
Design of a New Generation Terminal Platform for Radio Film and Television NGB
Authors: Li Peifeng 
Published: November 2019

Abstract
The Next Generation Broadcasting Network (NGB) is not only a revolution in radio and television technology, but also an overall innovation in concept and technology. With its emergence, radio and television will achieve full service and high quality in the future carrier network, and it can also realize the convergence of radio and television networks under different technical systems. This paper described that Xuzhou Radio and Television Company has seized the opportunity of the next generation radio and television network NGB construction in the whole country, to blaze new trails and innovates, and continuously designed a new generation terminal platform according to its own actual characteristics.
A Discussion on the Service System of College Smart Libraries in the “Internet +” Age
Authors: Zhang Yuping 
Published: November 2019

Abstract
Since the State Council proposed the “Internet +” action plan in 2015, various industries have been developing their “Internet +” action plans. “Internet +” has already begun to affect the library community: In terms of service method, library services need to be transformed from online model to offline model and from manual services to smart self-service ways for users; in terms of service accuracy, libraries should solve the following problems: how to be as accurate as possible to meet the needs of users, how to exactly position the library services and products, and how to build an effective service platform. This requires the library to re-explore the new service system in the “Internet +” environment. Based on the author’s learning and practical experience, this article first analyzed the connotation and characteristics of “Internet +” and then discussed the reform of library services led by “Internet +”. Then it discussed the smart service system of college libraries and finally built a smart service system of college libraries based on “Internet +”
Analysis of artificial Intelligence Technology in Electric Automation Control
Authors: Zhang Hongzhe 
Published: November 2019

Abstract
Electrical engineering is an important part of mechanical engineering. With the development of science and technology, automation has gradually replaced the artificial labor force, and artificial intelligence has played an important role in electrical engineering automation. Artificial intelligence is embodied in the three levels of thinking, perception and behavior. It mainly simulates eyes and expands human intelligence. Its research contents can be divided into machine thinking and thinking machine, machine behavior and behavior machine, machine perception and perception machine, three levels. In the control process of electrical automation engineering, intelligent control technology not only strengthens the ability of automation and control of electrical equipment, but also lays a solid foundation in the fast and safe operation process.
Optimization of education management system for English teaching based on web
Authors: Song Guoping , Sun Wenxing 
Published: November 2019

Abstract
With the integration of world economy, social reform and the development of English education. The English test has become a significant part of education. Due to the status of English courses and the scale of examinations, computer examination is undoubtedly a convenient and fast way of examination. At the same time, for higher vocational college teaching, some English examination systems based on WCB are not targeted. Therefore, the development of higher vocational English Web examination system. It is an exploration of English teaching reform and English language learning test in higher vocational colleges under the new situation. It has the characteristics of pertinence, science, economy, practicability and operability. It is believed to be of great promotion and application value to higher vocational English teaching, curriculum construction and reform as well as teachers’ own development.
Research and system design and implementation of log - based computer forensics technology
Authors: Wen Linbin 
Published: November 2019

Abstract
This thesis is in the “large scale research of Internet information security system” of the background, studied the computer log network forensics technology, focuses on the log forensics analysis and integrity protection and authentication technology, designed and implemented based on computer network system log user behavior forensic analysis system. This paper summarizes the relevant concepts of computer forensics technology, electronic evidence and system log, demonstrates the feasibility of log as electronic evidence, and proposes the realization model of computer network forensics based on system log, and analyzes the problems that should be paid attention to in computer log forensics. This paper studies the key issues in the process of log forensics, including the collection, transmission, preservation, analysis and submission of logs, in which the analysis of log forensics and integrity protection and verification are the focus of the research. Forensic analysis of logs is to mine log records related to intrusion events by analyzing massive log data, which is divided into statistical analysis and correlation analysis. Paper presents the overall structure of the system is designed, and the subsystem module function and working process of description, implements a user behavior based on log computer network forensics analysis system, and from the safety of the system, the log acquisition performance, the integrity of the data transmission performance, the log data, forensic analysis and so on five aspects of the performance of the system were tested and analyzed, the analysis results show that the system has the basic function of the network forensics.
Bicycle Intelligent Stereo Parking Garage
Authors: Wang Muyao , Ma Shaochun , Kong ruosi , yuhang LIU 
Published: November 2019

Abstract
With the saturation of Shared bicycle market, the parking problem of urgently needs to be solved. At present, the most common bicycle parking rack in China is the spiral circular cage, which is simple in shape but not perfect in function. In this paper, a stereometric parking system was designed. It was divided into the upper and lower layers where the parking devices (including parking panels and racks) were installed. There were a number of parking racks with safety clamps were installed on parking panels radially outward from the center. The parking system had an opening on each layer for bicycle picking up or returning. This parking system doubled the parking space and solved the parking problems of Shared bicycles which made a great contribution to the city appearance.
A Study on Development and Evolution of the Intelligent Power Grid Information Communication Architecture
Authors: Li Yijie , Kang Zhongmiao , Wang Ying , Shi Zhan 
Published: November 2019

Abstract
According to the development plan of smart grid and the future demand of smart grid, the construction principles and development objectives of smart grid are discussed and analyzed. Based on the existing grid resources, and on the basis of ensuring full utilization of resources, a smart grid management system with significant advantages is realized, which fully guarantees the management convenience, reusability and portability of the system. On the basis of researching and analyzing the rules of the smart grid system architecture, an intelligent grid management system named “System of Systems” (SOS) is designed and developed, which is based on the open standard hierarchical service and replaces the old business silos with an integrated system. The smart grid system combines the scientific evolution route with service-oriented as the core feature to achieve a highly integrated management system to ensure the standardization of system data interaction protocols and the adequacy of data interfaces. In order to achieve good adaptability and compatibility of the smart grid system, the system can be optimized and adjusted flexibly and conveniently according to future changes in demand to ensure the reliability and stability of the system.
Credibility Model based on Space-Time Information and Interactive Evaluation in sharing model
Authors: Zhang Xiaobin , Zhang Jiacheng 
Published: November 2019

Abstract
Existing reputation calculations are mostly based on malicious behavior and other comments. They fail to effectively integrate impacting factors, ignoring the authenticity of evaluation and the complexity of interaction. A user reputation model based on spatio-temporal information and interactive evaluation is presented: user reputation is affected by ontology and evaluation reputation, and they interact with each other. Considering the synthetical influence of time, space and behavior, a time-space-behavior three-layer model is constructed to measure the time-space impact on ontology and the behavior impact on evaluation reputation; distributing weight to ontology and evaluation reputation, the reputation formula is established to obtain the user reputation. Experiments show the reputation model considers the influence of time, space and behavior on the ontology and evaluation reputation. The higher accuracy of the calculated user reputation has a higher application prospect for sharing mode user reputation evaluation.