bluuebunny/crossref_metadata_2025 huggingface dataset:
Integration of Big Data and College English Education
Authors: Zheng Saisai , Zhu Shengwen
Published: October 2020

With the arrival of the era of big data, the traditional English education has been difficult to adapt to the needs of social development. Under the background of big data, college English teaching needs to keep pace with the times. By analyzing the impact of big data on college English education, this paper discusses the innovative strategies of college English teaching. Only by making full use of high-quality resources in the era of big data, changing teachers’ traditional ideas, using data platform or learning software reasonably, and promoting the integration and development of various teaching modes, can the quality of college English education be improved.
Real Time Implementation of Terminal Security Policies Selection Based on Edge Computing
Authors: Xu Aidong , Wang Qianru , Jiang Yixin , Mao Zhongqi , Hou Wenjing , Zhang Yunan , Wen Hong
Published: October 2020

There are many kinds of terminals in the smart grid system, which have different functions and risks in the system. Different security policies are needed to protect the terminals. At the same time, the terminals will be subject to various attacks in operation. These attacks will change the security protection performance of terminals. Therefore, it is necessary to adjust the security policies in their operation. This paper proposes a real-time implementation method of terminal security policy selection under the edge computing based on the machine learning methods, which makes full use of the computing power of edge devices, adopts offline training and online judgment. The training of machine learning parameters can be completed in the edge side or in the cloud while the security strategies selection continues going on the edge computing side. By this way, the real-time training update and real-time selection of security policy in edge computing system are realized.
Fiber Bragg Grating Sensor Based Vibration Monitiring for Foreign Matter Invasion of Protective Barrier
Authors: Li Peng , Guo Yongxing , Fu Jianjun
Published: October 2020

A vibration monitoring system based on fiber Bragg grating is proposed to meet the need of protective barrier along the railway to monitor the foreign matter invasion. A high sensitivity fiber Bragg grating vibration sensor based on cantilever structure is developed. Three vibration sensors were deployed to a protective barrier with a length of 20 meters to conduct intrusion vibration monitoring test. Test results show that: 1) the fiber Bragg grating vibration sensor can well monitor the vibration signal; 2) the vibration intensity decreases obviously with the distance impact position increasing; 3) the response time of vibration measurement of different sensors is also in sequence when the distance impact location is different. Therefore, the magnitude of the external impact and the impact position in the protective barrier can be analyzed through the response amplitude distribution of each sensor and the response time sequence of the sensors.
Method for Identifying Abnormal Access to Sensitive Data Based on Network Flow
Authors: Ma Yong , Feng Jing , Li Jingyi
Published: October 2020

With the increasing scale and quantity of civil aviation information system, the data carried in the information system is becoming more and more important and sensitive. In the face of a large number of information systems, sorting out and monitoring whether passenger information in the information system has been accessed in violation of regulations is an urgent problem in the civil aviation industry. In this paper, the civil aviation business system is deeply studied, and a method of identifying abnormal access to sensitive data based on network traffic is proposed. Through the collection and analysis of network traffic, and then identify the sensitive information in the network traffic, and use k-means clustering method to classify the access behavior of sensitive information. Finally, combined with expert experience, the malicious access behavior for sensitive data is accurately identified.
Virtual SDN Network Embedding Algorithm Based on Load Balance
Authors: Ran Jinpeng , Wang Xiang
Published: October 2020

Aiming at Software Defined Network (SDN) virtualization environment, a virtual SDN (vSDN) network embedding method based on fruit fly algorithm is proposed to minimize the overall load imbalance and average control delay of the network. The simulation indicates that the proposed method improves the vSDN request acceptance rate. Besides, it has good load balance performance of the underlying physical SDN network, and reduces the communication delay for controller-to-switch.
An Improved Mask Approach Based on Pointer Network for Domain Adaptation of BERT
Authors: Lu Pengkai , Jiang Dawei , Li Ying
Published: October 2020

Pre-trained BERT model has shown its amazing strength on downstream NLP tasks by fine-tuning. However, the results with fine-tuned BERT will decrease when the model is directly applied to a series of domain-specific tasks. he original fine-tuning method does not consider accurate semantics of tokens in a specific domain. Different from random selecting, we present a more efficient mask method which utilizes a pointer network to decide which tokens should be preferentially masked. The pointer network sorts tokens in a sentence by their recovery difficulty. Then we train a BERT model to predict top tokens that are replaced by [mask] in original sentences. We tested the new training approach on biomedical corpora. Experiments show that the new trained model outperforms the original BERT model in some domain-specific NLP tasks while consuming extra domain corpus.
Research on Convenience Index of Urban Life Based on POI Data
Authors: Ye Xinyang , Tan Hongli , Zhang Yongzhi , Zhang Liang , Zhang Zhaohu
Published: October 2020

The urban life convenience index is the most important evaluation standard of the livable life. The convenience of residents’daily use of public and service facilities could represent the life convenience of people’s urban life. Analytic Hierarchy Process (AHP) is a decision method that decomposes elements related to decision-making into levels such as objectives, criteria, and programs to perform qualitative and quantitative analysis. POI data has the advantages of high coverage of public service facilities and widely coverage of data, so it is effective to calculate the life convenience index and establish the system for assessing the convenience index of city life based on the POI data and AHP. It not only provides a practical reference for the special planning of urban public service facilities, but also explored good methods for planning applications using opened data.
Study on Spatial-Temporal Characteristics and Influencing Factors of Network Attention: The Case of Guilin, China
Authors: Yao Jiansheng , Liu Yanling
Published: October 2020

To research the spatial-temporal distribution characteristics and influencing factors of tourism network attention is meaningful for understanding the current situation of the development tourism, revealing tourism customer market, and providing guidance for tourism planning, service, management. Took Guilin of China as an example and based on Baidu Index, this paper studied the spatial-temporal characteristics and influencing factors of tourism network attention by using seasonal concentration index, variation index, geographic concentration index, coefficient of variation and regression analysis. The research found that mobile network attention has a major share and has obvious seasonality. The PC network attention occupies a low share, which is not affected by the peak seasons, but fluctuates periodically with working days and rest days. In Guilin, the main factor influencing the time distribution of the network attention is precipitation, and the climate comfort has not reached a significant level. The regional distribution of the network attention is neither centralized nor balanced. The population size, the network development and the distance are important factors affecting the spatial distribution of network attention.
Current Status of Testing and Research on Circuit Breaker Mechanical Performance and Arc Extinction
Authors: Sun Dong , Man Xiaoping , Wang Chuqiao , Wang Shujie
Published: October 2020

The performance of the circuit breaker mainly includes mechanical performance and arc extinguishing performance. This paper reviews the current status of its detection methods. Research indicates that the dynamic characteristic instrument method can meet the needs of offline detection for the detection of mechanical properties, but it cannot be implemented with electricity. The traditional method for detecting the degree of contact ablation is the electrical life method, which determines the change in the degree of contact ablation of the high-voltage reactive switching switch by the weighted calculation of the number of breaking and the breaking current. This method can only reflect the deterioration of the contact ablation degree of the high-voltage reactive switching switch, but it cannot reflect the abrupt or abnormal contact ablation degree deterioration. It is necessary to carry out research on new technology for live detection of circuit breaker performance.
Control Method of Traffic Signal Lights Based On DDPG Reinforcement Learning
Authors: Wu Haosheng
Published: October 2020

Optimizing the traffic route in the current environment and how to control the best time for traffic lights in large-scale traffic flow has become the main factor in people’s current traffic travel life. This article proposes the use of deep deterministic policy gradients (DDPG). DDPG reinforces the method of learning traffic lights to control the best time for traffic lights, and studies the information interaction between the agent in the environment using the intersection as the agent, so that the agent can find the controllable target in the shortest time. The comparison of simulation experiments with traditional neural networks and reinforcement learning algorithms shows that the algorithm proposed in this paper is superior to other traditional algorithms in terms of solution time, and can quickly and effectively control the timing of traffic lights.
Study on Characteristics of Radiated Electromagnetic Waves of Circuit Breakers
Authors: Chen Yao , Zhao Xiaobing , Wang Baojian , Hou Xinming
Published: October 2020

In order to study the new method of onsite detection of circuit breaker based on electromagnetic method, the characteristics of electromagnetic signal in the process of circuit breaker opening and closing were studied. The research results show that the electromagnetic wave will be radiated during opening and closing of the circuit breaker, and its frequency can reach 2GHz. The signal excited when the circuit breaker is closed is greater than the signal when the switch is opened, and the signal excited when the load is activated is greater than the signal when the switch is not loaded.
Experiment on Seismic Behavior of Neotype Column-slab High Piers
Authors: Zhou Yanqun , Li Miao , Huang Guoping
Published: October 2020

The low-cyclic reversed loading test was carried out for a scale model of a neotype column-slab high pier. The test was designed to investigate its failure modes, hysteretic characteristics, ductility, energy dissipation, residual deformation stiffness degradation. Test results indicate that the neotype column-slab high pier has strong and stable bearing capacity, good ductility and energy dissipation capacity, small residual deformation. The destruction process of the structure components is that bending cracking of the wing slab buttom firstly, shear cracking at the juction of the web plates with the corner columns, then bending cracking at the roots of the corner columns. Cracking and energy dissipation of the slabs decrease the stiffness of the structure, which effectively protects the corner columns. The study contributes to the literature for developing future design guidelines, for the purpose of providing experimental and theoretical background of the neotype column-slab high pier.
Enlightenments from Cloud Computing Technology to the Construction of Aviation and Space Information Equipment System
Authors: Wang Shimei , Li Fei , Hu Rong , Liu Bingqi
Published: October 2020

Cloud operation is a new operational mode brought by cloud computing technology in the military field. In the future aviation and space information warfare system confrontation, cloud operations will have the invisible power application and the combination of virtual and real combat operations. Based on the concept of cloud computing and cloud operation, this paper analyzes the construction requirements of aviation and space information equipment system. Based on cloud operation, aviation and space information equipment system is constructed. The paper discusses the enlightenment of cloud computing technology and cloud operation concept to the construction of aviation and space information equipment system. The revelations are Emphasizing the research on the winning mechanism of cloud operation, enhancing equipment fusion capability, focusing on reliability and safety, adhering to overall coordination, etc.
Temporal and Spatial Pattern Changes of Regional Economic Development Based on Night-time Light Data
Authors: Ling Juan , Liu Xin , Wang Qing , Niu Deyun
Published: October 2020

To realize coordinated regional development is a prerequisite for sound, efficient and steady development of the national economy. In this paper, DMSP/OLS night light data of Shandong Province from 2000 to 2013 are adopted to analyze spatial and temporal pattern changes of regional economic development. Research results suggest that: The overall economic development of Shandong has been fluctuating. The economic development gap of different cities is large and a cross-regional economic coordination framework has not yet been put in place. Eastern coastal cities have been enjoying a sound development momentum, which can effectively drive the economic development of the surrounding cities.
Investigate Calibration Methods for Pressure Transmitters
Authors: Wang Jiaoyan , Zhang Haining
Published: October 2020

Pressure transmitter[1-4] refers to a pressure sensor whose output is a standardized signal. The default memory value of the memory used to store the adjustment information in the internal signal conditioning chip is unknown, so the input and output curves of the pressure transmitter are unknown. The pressure transmitter must be calibrated to adjust the pressure transmitter input and output curves to standard input and output curves. Therefore, this paper studies a calibration method of the current output type pressure transmitter pressure based on the programmable gain amplifier PGA308. The method uses the average slope method to fit the pressure transmitter output output curve, which can realize the calibration of the pressure transmitter. The calibration accuracy can reach 0.0063%, and the calibration rate can reach 9.9 seconds/piece.
Software Architecture Analysis of Intelligent Distribution and Transformation Terminal Based on Container Technology
Authors: Jiang Yanrong , Hu Shejiao , Niu Zhao , Wu Lin
Published: October 2020

Ubiquitous power Internet of things is an important direction of the development of smart grid, and distribution Internet of things is the application of ubiquitous power Internet of things in the field of distribution. As the terminal unit of state perception, intelligent decision-making and control subject in the distribution Internet of things, intelligent distribution and transformation terminal is the foundation to realize the distribution Internet of things. In order to solve the problems of complex software architecture of traditional distribution and transformation terminal, which is not conducive to expansion, maintenance and transplantation, Microservice + container technology is adopted as the software architecture of intelligent distribution and transformation terminal, which reduces the complexity of development, improves the efficiency of operation and maintenance, and meets the diverse and rapidly changing service requirements of distribution network.
Wind Turbine Blade Defect Image Acquisition System
Authors: Zhang Ningning , Lu Chengzhi
Published: October 2020

The detection of wind turbine blades in service is a difficult problem in wind power operation and maintenance. Wind farms in the quality assurance unit and daily inspection, regular detection of blade is with the aid of SLR camera, then the human recognition, low accuracy and low recognition efficiency. This paper puts forward a set wind turbine blade detection method based on based on artificial intelligence image recognition system. With the help of high definition camera array and image recognition software, a large number of image acquisition and rapid recognition processing are carried out for wind turbine blades in service, and finally the automatic detection of blade surface defects is realized. The feasibility and applicability of this method are verified through field detection, which can be promoted in the field of wind power.
Experimental Research on the Technical Parameters of Laser Engraving
Authors: Xie Lusheng , Chen Xiaoyu , Yan Huangping , Xie Haihe , Lin Zhenheng
Published: October 2020

The process route for obtaining the processing parameter data through the engraving test first and then using these data for laser engraving was formulated. Through laser engraving experiments on a variety of materials such as wood, bamboo, paper, plastic, leather goods, PCB, acrylic, glass, paint layer, etc., we studied the changes of laser engraving with laser intensity, engraving speed, and black and white contrast. The physical process of laser engraving is analyzed, and the laser engraving of different materials is successfully carried out using the optimized parameters obtained by the experiment. And through the experiment to obtain the appropriate engraving technical parameters, technical parameters include laser intensity, engraving speed, black and white contrast, etc. The experimental results show that different engraving materials have basically different laser intensity, engraving speed, and black and white contrast. The combination of low intensity and slow speed engraving can delay the laser loss. The slower the speed of most materials, the better the effect. Carrying out laser engraving on materials with high ignition points, the effect of low-speed engraving is better. Laser 3D engraving technology is an emerging and promising laser processing technology. This article has reference value for further research on laser 3D engraving.
Research on CCHP System Grid Connection Interface Device Based on Elman Neural Network
Authors: He Hongyan , Chen Rui , Xu Jianqiang , Ding Kai , Zhu Xiaofan , Zhou Guoqi , He Shengguo , Huang Zhiwei , Xiao Shengyuan , Zhou Xiang , Luo Laifeng , Fang Xiaomin , Peng Wenjian , Cui Xingjun
Published: October 2020

With the promotion of the concepts of “energy Internet” and “multi energy complementation”, the combined cold heat and power (CCHP) system technology has been paid more and more attention by the energy power circles at home and abroad. CCHP system generates electricity through internal combustion engine, meanwhile, the waste heat discharged after power generation is supplied with heat and cooling to users through waste heat recovery equipment, so as to effectively improve the energy utilization rate. However, with the development of information and intelligence in the power grid, the threat of various network malicious attacks on the power industrial control terminal is growing. The traditional CCHP system grid connection interface device operating environment is open and vulnerable to network malicious attacks. In this paper, an interface device of CCHP based on Elman neural network algorithm is proposed. The technical problem to be solved is to be able to realize active defense against unknown attacks and improve the security and operation reliability of CCHP system.
Real-time Evaluation System of Monitoring Equipment State Based on the Integration of Subjective and Objective
Authors: Qi Jingxian , Cao Yuefeng , Sha Shuming
Published: October 2020

Equipment operation monitoring is an important means to ensure the safe operation of power grid, and the operation status of power equipment will directly affect the operation security of power grid, so it is necessary to evaluate the equipment status in real time. In this paper, a subjective and objective evaluation system based on AHP and entropy weight method is proposed, which integrates the operation information and model information of power grid equipment and defines the indicator system of multi-dimensional analysis. The results show that this method has a very good guiding role in ensuring the real-time evaluation of equipment and the auxiliary decision-making of regulation and control
Study on Preparation and Durability of Phosphogypsum Composite Cementitious Foam Concrete
Authors: Li Jiawei , Sun Zhenping , Pang Min , Tian Juntao , Ling Yujie , Luo Shi , Li Fei
Published: October 2020

Acid base salt solution erosion, carbonization test and freeze-thaw cycle test of cement foam concrete and phosphogypsum based foam concrete were carried out respectively. The results show that compared with cement based foam concrete, phosphogypsum based foam concrete has stronger performance of resisting acid and alkali salt attack. This is mainly due to the fact that its internal cement minerals and hydration products have less active components, and are not easy to react with acid-base salts, and have better ability to resist freeze-thaw cycles at the same time. However, the resistance to carbonation is not as good as that of cement based foam concrete. This is due to the high content of aluminum in the interior and the large volume of ettringite, which is easier to be carbonized.
The Calculation of Firing Safety Zone Based on Ballistic Curve Model
Authors: Meng Xianyu , Cui Yanping , Gao Juan , Cai Xiaoyan
Published: October 2020

This paper discusses the determination of the safety zone of artillery fire drill. For the convenience of research, the safety zone is divided into absolute safety zone and relative safety zone. The ballistic curve model starts from the analysis of the trajectory of the projectile, through the analysis of the forces on the flying projectile, using Newton’s second law and the differential equations, the ballistic curve model describing the trajectory of the projectile is established. After that, the trajectory curve parameters of given launch angle are calculated by using MATLAB software, and the farthest range of projectile is obtained. According to the relationship between the range and the angle of the projectile in the ballistic curve model, the angle of the projectile can be obtained, and then combined with the upper limit of the angle of the projectile launching error, the range of the projectile falling point can be obtained.
A Simulation Approach of Information Propagation in Homogeneous Network
Authors: Zhang Yuanfa , Qiao Fengcai , Li Wei , Deng Jinsheng
Published: October 2020

Modelling the behaviour of online social network users’ opinion propagation is of great significance. This paper proposes a method with individual’s own characteristics to model the opinion propagation in homogeneous network. We firstly described the detail of propagation model construction steps including opinion interaction rules, cumulative interaction influence value normalization and historical impact. Then we introduce the definition of individual tolerance to better model propagation. We conducted simulation experiments on two representative propagation networks: ER random network and BA scale-free network. In the end, we give the phenomena and explanation of each simulation result from three aspects.
Key Frames Extraction Based on Optical-flow and Mutual Information Entropy
Authors: Bao Guangbin , Li Dongfang , Mei Yuli
Published: October 2020

Key frames provide a suitable video summary and framework for video indexing, browsing and retrieval, and how to extract key frames is the core in the field of video retrieval. In order to solve the problem of redundancy and missing selection in key frame extraction, this paper proposed a key frame extraction algorithm based on optical flow and mutual information entropy. This algorithm integrates mutual information entropy and optical flow characteristics to extract key frames. First, the optical flow method calculated the total optical flow of each frame of the image, and selected the video frame with extreme optical flow difference in the neighbourhood as the key frame, and the other video frames were put into the candidate key frame set; by calculating the mutual information entropy of the key frame set, the minimum mutual information entropy is taken as the threshold; Then, The mutual information entropy of the candidate key frame set was calculated, and the image frames larger than the threshold value were put into the key frame set; Finally, redundant key frames are deleted through the measurement of inter-frame similarity, and the remaining key frames are the key frames to be extracted. The experimental results show that compared with other methods, the accuracy of extracted key frames by this approach is significantly improved on precision, recall and F-score, and the extracted key frames can reflect video content more effectively.
Singular Topoi of Countably Non-local, Continuously Cayley, Maximal Elements and the Continuity of Closed Elements
Authors: Wan Fang
Published: October 2020

Assume we are given a smooth, multiply prime monodromy Ꮭ. Recent developments in Euclidean arithmetic [20] have raised the question of whether J = W″. We show that A ≠ ‖ Q ‖. The goal of the present article is to construct equations. It is not yet known whether Poncelet’s conjecture is false in the context of homeomorphisms, although [15] does address the issue of reducibility.
Design of Control System for Fresh Air Conditioner
Authors: Shi Ziqi , Wei Jun , Wang Chunhua
Published: October 2020

In response to the increasing requirements of most residents for indoor living conditions, the design of an air conditioner control system based on the STM32 single-chip microcomputer is proposed, and the touch screen is used as superior computer to monitor and adjust the temperature and humidity and air quality of each room. Complete the software and hardware design of the air conditioner control system and use the PID control algorithm to optimize the control process.
A Microblog Unbalanced Data Evolution Analysis Method Based on LDA Model
Authors: Feng Shaorong
Published: October 2020

As a social network platform, Microblog has a large amount of information that can be mined. Microblog differs from static texts, which is time-sensitive, and the popularity of themes is changing with time. In addition, the popularity of Microblog varies from theme to theme, and the number of Microblogs varies greatly. Therefore, it has obvious unbalance characteristics. The traditional LDA model can not mine the theme intensity evolution process, and the theme mixing phenomenon will appear in the theme of unbalanced data mining. In view of the above problems, this paper proposes a method to analyze the theme evolution law of unbalanced Microblog data by introducing time variable. The experiment shows that the problem of theme words mixing is effectively solved after the balance treatment. The introduction of time variables can mine Microblog popularity and theme intensity evolution process.
Research on Deep Belief Network of Wind Power Control Management Unit Based on Attack Identification
Authors: Liu Wei , Huang Zhiwei , Chen Rui , Ding Kai , Zhu Xiaofan , Zhou Junfeng , Zhou Guoqi , He Shengguo , He Hongyan , Xiao Shengyuan , Lu Feng , Wang Guoyou , Ning Baifeng , Ding Qing
Published: October 2020

With the continuous improvement of the level of economic development and the increasingly serious environmental problems, countries around the world are focusing more on renewable energy. Wind energy is an important category of renewable energy because of its advantages. However, wind power is very dependent on the climate environment. It operates in an open operating environment, and its communication depends on the network interaction method. With the proposal of the Internet of Everything, the power grid is developing in the direction of information and intelligence. There are more and more attacks, and the security and stability of wind power interface devices have been threatened. As the power grid involves many areas and households, once the power outage occurs, the economic losses will be huge and even cause major security accidents. This paper proposes a deep belief network research of wind power control management unit based on attack recognition to improve the safety and operational reliability of wind power generation.
Construction and Preliminary Analysis of Three-dimensional Model of Offshore Wind Power Suction Bucket
Authors: Zhang Xu , Xiao Jiandong , Lin Yifeng
Published: October 2020

As a high-rise structure, offshore wind turbines are subjected to huge horizontal loads. Compared with the traditional tubular foundation for offshore wind power, the large-scale tubular foundation with a load-bearing top has a larger load-bearing capacity due to its unique broad-shallow tubular top load-bearing mode. For reasons of towing stability, construction subsidence, fine leveling and structural strength, a subdivision plate is arranged in the concrete cylinder foundation cylinder. We established solid and structural elements through numerical methods, and took into account the tube-soil contact, so as to finely construct a real three-dimensional complex model of this new type of tube-based foundation and soil, which plays an important role in analyzing its deformation and bearing characteristics, as well as the safety and stability of the foundation structure design and practical application.
Design of Electronic Blood Pressure Testing System
Authors: Feng Chenwei , Liu Caifu , Zou Ziliang , Deng Mingyu , Hong Yanjun
Published: October 2020

With the continuous development of electronic technology, the previous traditional methods of blood pressure testing are far from meeting people’s requirements. Fortunately, the advent of electronic blood pressure meters has shown great convenience and potential. Against the backdrop, a new electric blood pressure testing system based on a CC3200 LaunchPad is proposed in this paper, which uses a pressure sensor to collect the information of static pressure and fluctuation of blood pressure, and then transmits the processed data to the software in PC. The software in PC analyzes the data by oscillometric method and Gaussian fitting method, and then the static pressure, systolic pressure and diastolic pressure are calculated and displayed. Test results show that the blood pressure testing efficiency is greatly improved by this system with its high accuracy and reliability, which can meet the requirement of the AAMI (Association for the Advancement of Medical Instrumentation) standard.
Research on the Application of Beijing Metro Wireless Communication and Dispatching System Based on TETRA
Authors: Liu Bo , Zhang Heng , Liang Jia , Qi Ying
Published: October 2020

Communication system is one of the core technologies for urban rail transit operation, and it is also the fastest growing field nowadays. The Beijing Metro wireless communication dispatching system based on TETRA is designed to solve the problem that the expensive cost of purchasing of English dispatching consoles in dedicated wireless communication system and the lack of replacement of the internal dedicated PCBs. The system is based on the existing wireless communication private network operation and maintenance auxiliary decision-making system, and is developed twice by using the API (application program interface), which is provided by MOTOROLA, and realizes the function of using PC to install the secondary development software instead of the English dispatching console dedicated PCB. It provides technological support for the upgrading of operation and maintenance in the field of rail transit communication and broadens the direction of practice.
Research and Implementation of the HD Video Real-Time Edge Detection System Based on FPGA
Authors: Ou Mingmin , Wang Jun , Wu Yi , Yi Jin
Published: October 2020

In this paper, we propose a high-definition (HD) video real-time edge detection system, also presenting its hardware design and implementation results. Traditional median filtering blurs image details while removing noise, therefore we propose the improved median filtering algorithm which not only effectively removes impulse noise, but also retains more image details. For the problem that traditional sobel edge detection algorithm easily loses graphic details. This paper proposes the improved sobel edge detection algorithm which extends the gradient direction to eight, introducing local adaptive threshold and non-maximum suppression. The proposed algorithms were designed with Verilog-HDL, and the real-time operation was verified and evaluated using an field programmable gate array (FPGA) based test system at an operating frequency of 200MHz for 1280×720 HD video.
The Mobile Teaching Platform Based on WeChat Applet and the Moodle System --- Explore the Impact of Teaching Platforms on Learning in a Mobile Learning Environment
Authors: Wang Tao
Published: October 2020

With the continuous optimization of mobile technology and network environment in recent years, the new learning platform will become an effective support for future mobile learning. We combine the Moodle platform and WeChat applet to build a mobile teaching platform based on the Moodle and WeChat applet. This article takes the Moodle users and the Moodle WeChat applet users as research objects, use a combination of questionnaire survey, statistics and content analysis, compare and analyze the survey subjects’ learning tendency, activity level, and learning period from various aspects. The results of the study indicate that the learner’s activity level is affected by different learning platforms, compared with the Moodle platform, the users’activity of the Moodle WeChat applet is significantly higher than the former, moreover, the duration of a single online connection of users on the applet is generally lower than that of the PC, the reasons include the influence of user learning time, place and learning habits. The research conclusion shows that WeChat applet has an important role in enhancing the learning of the Moodle users, WeChat platform takes full advantage of the convenience of mobile learning.
Simulation of Phase Noise Estimation and Compensation in Coherent FSOC System
Authors: Chen Shufeng , Pei Lang , Liang Chun , Yang Yan
Published: October 2020

We study the phase characteristics of weak turbulence and analyze the estimation and compensation of phase noise caused by atmospheric turbulence. It is found that the traditional compensation algorithm is not very suitable in Free Space Optical Communication (FSOC). We propose to introduce the Frequency Domain Equalization (FDE) of single carrier into the FSOC with coherent reception, and the system performance can be greatly improved by the combination of FDE and phase compensation.
Research on the Optimization of Integrated Schedule and Transport Plan of E-Commerce Goods
Authors: Wang Yu , Ji Daoyuan , Mao Jin
Published: October 2020

Based on the line-haul freight transport of a certain e-commerce company, this paper studies the cargo scheduling schemes between different supply centres and demand centres with different transport modes. Taking the minimum transport cost as the objective function, time window and supply-demand balance as constraints, considering the various types of goods, this paper establishes the decision-making optimization model for e-commerce goods line-haul transportation, and calculates the cargo scheduling schemes in different scenarios by LINGO 18.0. The paper finds out that highway is still the main mode of transporting e-commerce goods at present; with the continuous improvement of high-speed rail freight transportation, railway shows great potentials to carry e-commerce goods; at the same time, air transport is irreplaceable for transporting time-sensitive products and high value-added products.
Schedule Risk Analysis of EPC Project for Power Transmission and Transformation Project Led by Design Enterprise
Authors: Zhao Zhongze , Meng Qichen , Pang Nansheng
Published: October 2020

The advantage of the EPC model is that it can alleviate the contradictions of all parties, integrate resources, and release the owners from management pressure. However, the various risks in the whole life cycle of the power transmission and transformation project are complicated, and the schedule management is the weak point of the EPC general contractor with the design as the leader, and the management of the project schedule is directly related to the profit and reputation of the general contractor. Therefore, this paper will comprehensively analyze the potential schedule risk in combination with the characteristics of power transmission and transformation engineering, and use the set pair analysis principle to establish a fault tree risk analysis model to evaluate the schedule risk of the EPC project of the power transmission and transformation project led by the design enterprise.
Analysis of the Teaching Contents and Methods of Art Education in Higher Vocational Colleges Based on Computer-aided
Authors: Li Bo
Published: October 2020

At present, China’s economy is in a period of rapid development, and the traditional mode of education is no longer in line with the needs of the current society. In order to promote quality education, art teachers in higher vocational colleges should make appropriate reforms in teaching based on computer assistance. As an important part of higher education, art education in higher vocational colleges has not yet formed a complete and unique theoretical knowledge system, and is facing many practical problems. Starting from the characteristics of higher vocational colleges and their students, this paper makes a preliminary exploration on the selection and setting of teaching contents, the use and exploration of teaching methods. The teaching content of art education in higher vocational colleges should not only adapt to computer-aided, but also fully consider the characteristics of students, improve teaching methods and enhance students’ comprehensive quality.
Research on Computer Network Security Prevention in the Era of Big Data
Authors: Ouyang Bocheng , Cui Yinsheng
Published: October 2020

In view of the special status and influence of computer network in big data era, this paper points out and analyzes the traditional and new problems and loopholes faced by network security in the new era. Finally, from the consideration of many levels, the countermeasures of preventive measures are given.
Research on the Application of Computer Technology in the Innovation and Development of ideology and politics Education Theory Courses in Universities
Authors: Cao Boqiao
Published: October 2020

In the field of ideology and politics education in colleges and universities, there is a trend of Internet-based education environment, educational objects, educational concepts and educational methods. How to make use of the advantages of Internet cross-border connection and innovation-driven to realize the innovation and upgrading of ideology and politics education in colleges and universities, and how to apply computer technology to ideology and politics education in colleges and universities has become an important issue facing the ideology and politics education in colleges and universities. In the perspective of "Internet +", the innovation of ideology and politics education in colleges and universities is conducive to enhancing the effectiveness of the carrier of ideology and politics education in colleges and universities, showing the subjectivity of ideology and politics education in colleges and universities, and enhancing the flexibility of the ways and means of ideology and politics education in colleges and universities[1-2]. However, in the current innovation, it still faces many difficulties. Based on the analysis of the current challenges, this paper studies the application of computer technology in ideology and politics education in colleges and universities, and puts forward an innovative path strategy for ideology and politics education in colleges and universities under the "Internet +" perspective.
The Aestheticization of Oil Painting Teaching and the Construction of Multi-Dimensional Oil Painting Teaching System Based on Network Cloud Platform
Authors: Wang Chaobin
Published: October 2020

Oil painting is a part of art and art, and oil painting teaching has gone deep into many colleges and universities. Nowadays, there are many new requirements for the teaching standards of oil painting, and more and more attention has been paid to oil painting education. Aiming at the teaching mode of oil painting and the aesthete of oil painting teaching are the key contents of art education, the new ideas of oil painting teaching mode have innovative significance for art. Based on this, this article studies the aesthetics of oil painting teaching and the construction of a multi-dimensional oil painting teaching system under the network cloud platform.
Utilizing the Oil Painting Teaching on the Network Cloud Platform to Cultivate Students’ Innovative Thinking
Authors: Wang Chaobin
Published: October 2020

Innovation consciousness is the source of art development. With the continuous development of society and the continuous advancement of computer technology, on the basis of solid mastery of professional knowledge, innovation consciousness has been paid more and more attention by the society, and has become one of the essential qualities of high-quality talents. Oil painting is an independent form of artistic creation, which attracts the attention of teachers and students with its unique charm and becomes an important part of art education in colleges and universities. Based on this, this article mainly studies how to cultivate students’ creative thinking through oil painting teaching under the network cloud platform.
RETRACTED: Exploration and Research of Information Technology in College English Teaching
Authors: Huang Chen
Published: October 2020

With social progress, economic and cultural development, the world has moved towards economic integration and cultural diversity. English is of great practical significance in promoting students’ employment and social harmony. College English teaching should not only focus on language teaching itself, but also include many western cultures. The traditional college English education in our country focuses on the test-oriented education, and the students only pay for passing the test.So, dumb English is very serious. With the development of Internet technology, college English education needs to transform and reform in the multicultural perspective. English education must adapt to the communication mode of the Internet. At the same time, college English education should pay attention to the influence on multi-culture in the Internet era. This paper analysis the influence of multi-culture English education based on the Internet + era. And then it analysis the problems in multi-culture English education. Then, it explores the application of information technology in multicultural English teaching. Finally, the article puts forward some suggestions on how to better combine multicultural English teaching and computer technology.
Application of Computer Virtual Reality Technology in College Sports Training
Authors: Liang Cheng
Published: October 2020

With the continuous development of social science and technology, the application of computers is more and more extensive. The application of computer "virtual reality" (hereinafter referred to as VR) technology in college physical education (hereinafter referred to as PE) training can enrich the content of PE classroom teaching, update classroom teaching methods, and improve the quality and efficiency of PE training teaching. However, in the process of practical application, there are still some problems to be solved.
Reservoir Description Based on Computer Comprehensive Application of Seismic Attributes and Seismic Inversion
Authors: Zhang Chengyu
Published: October 2020

Oil field exploration is a common phenomenon of geographical observation in daily life. However, the areas where oil fields appear are always unlucky. There are always various problems in its structure. People don’t want to encounter the difficult reservoir problems in the process of oilfield exploitation[1]. It will affect the economic development and technological progress of the oilfield development process in our society. On this basis, the related problems of computer-based earthquake prediction have gradually attracted the attention of some experts in the academic field. The structure of the study area where earthquakes often occur is complex, and the lateral structure of its reservoir changes greatly. Therefore, it is urgent to analyze the seismic attributes and seismic inversion by computer.
Research on Problems and Countermeasures of Heilongjiang-Russia Economic and Trade Cooperation Based on Computer Technology under the Background of “Longjiang Silk Road Belt”
Authors: Liu Chunfu , Xu Yanyan
Published: October 2020

In recent years, Heilongjiang province encourages computer technology leading enterprises to develop in Russia, carry out the promotion of computer technology, build computer product processing and marketing base, and carry out overseas computer product processing trade. With the support of a series of policies, Heilongjiang’s computer technology "going global" has been accelerated significantly, and the economic and trade cooperation with Russia under the background of "Longjiang Silk Road Belt".
Research on Experiential Tourism Route Planning Based on Multi-source Data Algorithm in Rich Energy and Cultural Resources Areas
Authors: Yu Chunyu , Zhang Heming
Published: October 2020

Historical blocks are the carrier of urban history and culture, reflecting the continuation and development of urban history and culture, embodying a local historical context and regional cultural characteristics, and are an important part of historical and cultural cities. Taking the ancient city of Xi’an as the research area, this paper discusses the design method of the cultural promenade in the ancient city from the aspects of development condition analysis, route selection, theme determination, spatial organization and support system, etc., relying on multi-source data algorithms, and designed 4 Special theme promenade, on this basis, summarizes the planning and design methods of cultural promenade.