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Table of Content

    06 February 2013, Volume 1 Issue 1
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    算法设计与分析
    Iterative Algorithm of Searching Gang Several Crimes Based on Clustering Analysis 
    YANG Jing;WANG Jing
    2013, 1(1):  1-4.  doi:
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    The data mining technology is applied to the investigation of a crime process in the public security organs, considering the gang several crime cases is harm to the interests of the people, the paper proposes a kind of definite algorithm which is based on the theory of social network and the method of hierarchical clustering analysis to find out the association rules of the gang several crime cases, then uses iteratively expand set method to classify cases into a child set which has the relationship, it can match and find out the gang several crime cases and joint crime suspect in each subsets of cases. Compare to the old basic solution, the algorithms greatly improve work efficiency, reduce the running time of inquires.
    Research on Dictionary Mechanism Based on Binary of Trie Index Trees
    HAN Ying;FENG Jilin;YUAN Jing;WANG Maofa;ZHANG Yanxia; CHEN Fuming;CHEN Xinfang;PAN Zhian
    2013, 1(1):  5-7.  doi:
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    The dictionary mechanism serves as one of the basic components in Chinese word segmentation system. Its performance influences the segmentation speed significantly. Based on binary system, processing of text(any language string) can be converted into a binary processing， a mechanism of the Trie index tree dictionary can be created. According to different application requirements, the dictionary mechanism can automatically adjust the structure of the Trie which can help to find the right balance between storage space and query efficiency. The query speed of this dictionary mechanism is nothing to do with the total word number of dictionary, only influenced by the word length; Common prefix of the index value with the increase of vocabulary save a lot of memory space.
    Design of Quantitative Association Rules Mining Method Based on Data Field 
    MENG Haidong;;LI Dandan;WU Pengfei
    2013, 1(1):  8-11.  doi:
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    At present, the association rule mining focuses on Boolean association rule mining, few on quantitative association rules mining. Traditional methods are used to discrete quantify attribute, and then transform quantitative association rule mining to Boolean association rule mining. In order to overcome the interval divided excellent problem of traditional method, this paper designs the mining method of quantitative attribute association rules based on data field, and defines the formula for calculating support and confidence based on the quantitative of data field. This method is fully considered the incomplete of data in dataset and the different roles of each data for data mining, and makes association rules by mining accurate.
    Realtime Insert Algorithm for Computing Convex Hull of Finite Planar Sets
    LIU Ping
    2013, 1(1):  12-14.  doi:
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    In this paper, based on Graham scan algorithm, a realtime algorithm for computing convex hull of a finite planar set is proposed to check the sequential turn of 3 points. If N points of S are to be computed as stream, the number of tests for computing convex hull of S is lower than 3N.
    A Method of Distributed Job Management System Performance  Analysis Based on Workflow Net
    LIANG Kai;ZHANG Xiaofang;ZHANG Xiao
    2013, 1(1):  15-18.  doi:
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    In a distributed environment, each node itself has a different configuration, resource quantity, resulting in that there are differences of processing capability, coupled with the different resources required in the different task, in theory, the reference value of system performance is difficult to be accurately calculated. In view of this, based on the developed distributed job management system software, using the principle of WF_net, the paper analyzes and researches the equivalent performance of JNW and launches the assessment methods of workload on the system, in order to further effectively assesses the rationality and highperformance of job scheduling in the distributed environment. With putting a quantized reference value of system performance, it provides the theoretical feasibility analysis for the reliability of software functions on system, and ensures that the basic methodology support on subsequent development.
    A Nonrecursive Algorithm of Solving NQueens Problem Using Symmetry 
    SUN Guowei;MAI Ali
    2013, 1(1):  19-21.  doi:
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    A new nonrecursive algorithm of solving NQueens problem is achieved by using backtracking, which is based on stack and queue. This paper presents four properties of NQueens solutions, and analyses the symmetry between 10 solutions of 5Queens problem. Then using the symmetry, searching space is shortened a half of the solution space. The optimization algorithm to calculate the NQueens problem is obtained. Through theoretical analysis and experimental verification, the symmetry can significantly improve the efficiency of solving NQueens problem.
    Study on Construction Method of Lifting Dyadic Wavelet Filters
    ZHANG Haiying;FAN Zhiqiang
    2013, 1(1):  22-24.  doi:
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    A new construction method of lifting dyadic wavelet filters based on dyadic lifting schemes theory and vanishing moments is put forward. Lifting dyadic wavelet filters with higher order of vanishing moments can be constructed from dyadic wavelet filters. Meantime, considering the characteristic of wavelet filters, the paper designs lifting dyadic wavelet filters with compact support, symmetry and higher order of vanishing moments by selecting the appropriate lifting parameters.
    Attribute Reduction Based on Ant Colony Genetic Algorithm
    XIA Xianzhi;DU Xinyu;ZHENG Yangfei
    2013, 1(1):  25-28.  doi:
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    As for the ordinary ant colony algorithm for attribute reduction, which has the problems such as local minima, many iterations and slow convergence, this paper proposes the ant colony genetic algorithm that takes copy, crossover and mutation of genetic operators to ant colony algorithm, which can improve the generation of ants and the process of the feasible solution, to improve global search capability. The algorithm is validated on data sets of UCI machine learning database from the University of California. The results show that the algorithm can quickly and efficiently solve the attribute reduction, to be able to find the minimal reduction set.
    Research on Load Balancing Strategy for Server Cluster
    RAO Lei;TANG Xiaochun;HOU Zengjiang
    2013, 1(1):  29-32.  doi:
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    According to the issue of load balancing for the server cluster system, taken account of both makespan and load balance degree, a genetic simulated annealing algorithm is proposed. The experimental results show that the algorithm reduces the makespan and improves the resource utilization and load balance degree of the cluster system.
    Passive RFID Localization Based on Adaptive Smallest Inclusive Circle Algorithm
    BIAN Jiangnan;LIU Hongwu
    2013, 1(1):  33-36.  doi:
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    In order to meet the development of the more and more highaccuracy of RFID indoor localization system, this paper puts forward a localization system which joins the adaptive Knn algorithm of LANDMARC system with “the smallest inclusive circle localization algorithm”. Furthermore, to match up the adaptive Knn algorithm, the active reference tag is replaced with passive reference tag, the topology of them is arranged as regular triangle network which can prove the performance of localization, and make the system an intelligent unity. The simulation results show that this algorithm can effectively prove the accuracy of localization system.
    Research on State Transfer Algorithm in Byzantine Fault Tolerance  2.School of Computer, Central China Normal University, Wuhan 430079, China
    CHEN Liu;;ZHOU Wei
    2013, 1(1):  37-39.  doi:
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    To solve the problem that existing state transfer algorithm is not applied to proactive replica, a state transfer algorithm which supporting replica with state is proposed. The recovery queue is created in every replica. When the replica whose state is not latest because of recovering from faults or other reasons, the algorithm can be used to fetch latest state from other replicas. The experimental results show the effective of the algorithm.
    A Linearized SFS Algorithm Based on Relaxation
    YANG Xiaoguang;LI Yunming;ZHANG Hujun
    2013, 1(1):  40-44.  doi:
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    In this paper, a new relaxation algorithm based on Pentland’s linear SFS model is presented, for which a weak necessary condition is also proposed and proved. Some experiments on shape recovery from a single terrain model image, by the methods of Pentland, TsaiShah, Ulich and ours respectively, show that： （1）the relaxation based algorithm could really obtain the corresponding surface of the image to some extent without the boundary conditions; （2）the relaxation factor could control and reflect the roughness of the surface to some extent and might remove the noises in a meaning way.
    A Linearized SFS Algorithm Based on Relaxation
    YANG Xiaoguang;LI Yunming;ZHANG Hujun
    2013, 1(1):  40-44.  doi:
    Asbtract ( 327 )  
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    In this paper, a new relaxation algorithm based on Pentland’s linear SFS model is presented, for which a weak necessary condition is also proposed and proved. Some experiments on shape recovery from a single terrain model image, by the methods of Pentland, TsaiShah, Ulich and ours respectively, show that： （1）the relaxation based algorithm could really obtain the corresponding surface of the image to some extent without the boundary conditions; （2）the relaxation factor could control and reflect the roughness of the surface to some extent and might remove the noises in a meaning way.
    A Study of Teaching Quality Evaluating Model Based on BP Neural Network
    HAN Ke
    2013, 1(1):  45-46.  doi:
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    First, the indicators of the current teaching evaluating system is simplified by the means of questionnaire survey and principal component analysis, then a teaching quality evaluating model based on BP neural network is built up, finally, the model’s reliability and effectiveness is validated by using a group of data.
    Mining Outliers in Highdimensional Space Based on Histogram and FPgrowth
    LI Longjiao;CHENG Guoda
    2013, 1(1):  47-52.  doi:
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    Outlier detecting in highdimensional space is one of the difficult issues in the area of data mining. In this paper, a new outlier mining method based on histogram and FP (FrequentPattern) growth is presented to solve the drawback of the existing methods on high dimensional space. In the method, the KNN（KNearest Neighbors）distance is calculated first to form the histogram in each dimension. Then, the outliers are distinguished from them. Finally, the association rules of the frequent outlier dimensions are detected by the FP growth to explain the relation in the outliers. The experiments indicate that the method is effective and meaningful.
    嵌入式系统
    A Fast Test Algorithm to Point in Polygon Based on Slope
    HONG Zhiqiang
    2013, 1(1):  53-56.  doi:
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    To detect if a point in the polygon or not is a basic algorithm in computer graphics, in order to simplify the algorithm complexity， a new method is proposed here which can produce the result fast simply by computing the slope of the line connected from the point to each point of the polygon， and then compare each of the slop to the edges. Within this algorithm， there is no sophisticated computation， such as dot， cross， intersect， triangle algorithms etc and， merely has 2n times of subtract operate， n/2 times of division， and some simple compare operate in average， hence the result of the point if in an n edges polygon can be produced. Finally， tests suggest that this algorithm is fast and efficient.
    网络与通信
    tudy on Clusterhead Backup in Wireless Sensor Networks
    JIANG Qingyun
    2013, 1(1):  57-60.  doi:
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    A clusterhead backup mechanism based on the integrated index for WSN is proposed. With node’s residual energy, node degree and communicate price, an effective integrated index is constructed. It selects node with the best integrated index as the backup clusterhead and maintains the continuous rotation between the clusterhead and backedup clusterhead. The proposed method is implemented and the simulating results show that the clustering WSN with this kind of mechanism can reduce the losses caused by the malfunction of clusterheads effectively, enhance the stability of the subclusters, extend the life cycle of the network and improve the overall performance of the network.
    Design and Implementation of Webpage Effects Based on jQuery Framework
    ZHOU Lingyu
    2013, 1(1):  61-63.  doi:
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    This paper describes the concepts and features of jQuery, analyzes its grammar and selector framework. In webpage designing, jQuery technology achieves the effectiveness and independence by compact codes.
    Cloud Storage Systems Based on Technology of Optical Disk Library
    XUE Yinying;WAN Xiaodong
    2013, 1(1):  64-66.  doi:
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    Efficiency, scalability, and low cost of cloud storage trends of storage services, but the uncertainty of the storage nodes and network transmission, making its safety has been questioned. This article erasures codes and CD library into cloud storage to store data in secure storage management and transmission of data in the system, to provide a solution for improving the security of cloud storage system.
    Research on Method of Developing BB Modules for Virtual Lab Based on Virtools SDK
    LI Mei;HAN Xiuling;CHEN Guang
    2013, 1(1):  67-70.  doi:
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    Based on development kit Virtools SDK and C+〖KG-*2〗+ programming language, new BB modules used in Virtual Computer Network Lab System are developed under VS2005 platform. This research solves the problem encountered during system developing which existing in Virtools that some BB modules don’t have enough functions. The code of BB modules developed by this method is transplantable and redevelopable. It turns out to be a better way to extend the functions of Virtools itself, meanwhile, greatly reduces workload of system development and makes this lab system more perfect and interactive.
    Design of Remote SQL Server Database Report Based on VFP
    WEI Ping
    2013, 1(1):  71-73.  doi:
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    SQL Server database platforms is widely used in many management information systems based on LAN operating environment and C/S architecture. In order to facilitate remote access to corporate information, VFP is used as frontend development tools by configuring the NAT forwarding and port mapping, ODBC remote calldata view, to generate various types of business reports anytime, anywhere, with high reference value.
    Research and Development of Food Safety Supervision Intelligent Management System 
    ZHANG Lan;ZHANG Xiaofeng 
    2013, 1(1):  74-76.  doi:
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    National food and food supply security has a very important practical significance for social stability and progress. Facing with increasingly complex food supply environment, to improve food safety regulatory means, this paper analyzes and designs a food safety supervision intelligent management system. The terminal system is developed by Android operating system, and backstage by ASP.NET. The system architecture, mobile terminals and background function modules are designed detailedly. The key technology is studied indepth. By using the system, the food supervision and management of law enforcement officers can work live, the data of food safety is collected easily and data consistency is guaranteed fundamentally. The system has important practical value, and can be applied widely in the industry.
    Research on Middleware Based on Key Value Store
    SONG Hui;ZHANG Yanyuan;HE Juanjuan
    2013, 1(1):  77-80.  doi:
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    With the rapid development of the network and continuously rapid growth of data in the network, the distributed key value storage which can store data on servers, is used to dynamically adapt to growing workloads. This paper introduces a middleware technology on top of a keyvalue store, uses existing knowledge and technologies in relational databases. Through building appropriate data layout, the data can be accessed by not only the primary key of original tables, but also the nonprimary key based on demand. Also, the paper uses microsharding without sacrificing benefit of keyvalue store to support OLTP workloads elastically.
    Research and Implementation of Higher Vocational College Online Examination System312016, China
    JI Zhijiang;PANG Xiaofeng;ZHOU Guanghan
    2013, 1(1):  81-84.  doi:
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    Using B/S structure model, the higher vocational college online examination system is implemented based on ASP.NET, ADO.NET and AJAX technology, constructed by the administrator function subsystem, teachers function subsystem and student function subsystem, and its features include examination database management function, scoring function, online examination function. This thesis mainly discusses the technologies and content design in network test system development process.
    Research on Power System Realtime Data Updating Based on WebSocket
    ZHENG Ling;ZHENG Xiaotian
    2013, 1(1):  85-87.  doi:
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    Visualization technology has been widely used in power system, it utilizes the graphic perception ability of humanity to display equipment’s operating status data intuitively, greatly improves the system management level and staff’s operating efficiency. The realtime updating of the visualization data is the core part in visualization technology, this paper first elaborates the traditional data update mode, and discusses its advantages and shortcomings, then gives a solution based on WebSocket which achieves twoway communication to really accomplish the realtime data updating, finally gives an application example, and the key part of the code, to provide a basis for future research and application.
    Design of Remote Medical Monitoring System Based on 3G Technology
    PENG Landi;MI Ming
    2013, 1(1):  88-90.  doi:
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    Along with the computer technology, WIFI wireless communication technology and 3G communication technology development, combining with the increasing demand of medical care, using 3G communication and WIFI wireless communication technology, a remote medical monitoring system is designed and implemented. The system, can achieve the patient situation timely to doctors and their families whenever and wherever possible, to respond to the patients of possible contingencies, and can greatly improve the efficiency of care.
    Telecom Data Collecting System Based on Distributed Computing 
    KANG Shangqin;LI Jun;YE Heliang;LI Man
    2013, 1(1):  91-94.  doi:
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    With the development of cloud computing technology, the application of cloud computation in telecom IT supporting fields becomes more and more deep and wide.The online collection systems are facing with pressure of mass data collection and processing. An online collection system scheme based on distributed computing framework is designed, which uses Hadoop to collect and process call records. The scheme can effectively reduce the cost of the collecting system, improve its performance, availability and scalability.
    Design and Implementation of Heterogeneous Database Archiving System Based on XML
    LI Yuling;WAN Xiaodong
    2013, 1(1):  95-97.  doi:
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    The technology of database archiving can effectively solve the problems in data management and maintenance, which caused by the surge of enterprise data. Archiving mechanism taken by the database system itself has serious limitations. For heterogeneous database environment, this paper takes MSSQL Server 2005, MySQL5 and Oracle 10g as the objects of study, and uses XML to design the database archiving system. The system removes the differences in data format and management for the three database platforms by conversion module so that the data can map bidirectionally between storage device and database system.
    图像处理
    Microcontrollerbased Remote Monitoring System Design
    QI Lianzhong;YU Wulong;HUANG Xiangjie
    2013, 1(1):  98-101.  doi:
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    A remote monitoring system based on GPRS networks is designed, its hardware and software design are elaborated on. The image capture and storage, GPS positioning data acquisition and data receiving and sending of the GPRS module are controlled by 8bit AVR microcontroller. This device by using the existing technology of IE, combining a variety of IP technologies and services with mobile communication technology, achieves remote video transmission, positioning and control of the remotebit machine. The device is inexpensive, good stability, and it is a costeffective remote monitoring solution.
    The Second Development of CATIA Software Based on CAA and Examples
    XU Taihua
    2013, 1(1):  102-105.  doi:
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    With the 2dimension and 3dimension as the research object, this article introduces the CATIA second development of the developing tool of CATIA V5——CAA(Component Application Architecture). It expounds the constitutes, architectures and principles of the CAA. It also presents the basic approach of the second development of CATIA software based on CAA. On the basis of the contents above, it provides a method to generate texts in different types based on their different requirements. This method makes up the disadvantage of CATIA that inputting text can’t be accepted by CATIA. At the same time it offers some contents that the deeper development of CATIA can refer to.
    Modeling and Key Techniques of Virtual Campus
    QIN Wen;SUN Ka;ZHANG Xiaofeng
    2013, 1(1):  106-109.  doi:
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    Combining with computer graphics and related spatial information sciences technologies, this paper makes use of the software Multigen Creator, applies Nanchang Hangkong University as an example, researches and explores the technology of 3D digital campus. Through data acquisition, data processing and 3D modeling, a realistic 3D campus scene is built, which can support querying, roaming, flying and browsing operations, and realizes some functions about digital campus. The use of this technology has great importance on school enrollment, employment, education, alumni relations, showing the school strength and other aspects.
    Study on Application of WebGIS in Meteorological Business System Construction
    WAN Wenhui;CHEN Weihua;LIU Min
    2013, 1(1):  110-111.  doi:
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    This paper brings WebGIS into the Meteorological Business System. The realization technology, system structure design and database construction have been analyzed and discussed. Some ways of system construction are put forward also.
    National Dance 3D Digitizing Protection Method Based on Motion Capture Technology 
    WU Xiaoyu;ZHANG Yichun;SHEN Yinghua;YAN Xianji
    2013, 1(1):  112-114.  doi:
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    The method of catching real comprehensive threedimensional data of national dance is proposed in this paper. Guided by the method, the threedimensional data of wave dance is captured. Meanwhile, how to generate dance animation based on national dance threedimensional data is introduced to demonstrate the applications of dance 3D data. The modeling with the ethnic characteristics is developed and bound with biped skeleton. And then, the modeling with the skeleton is bound with threedimensional data of natural dance so as to generate the animation driven by the dance 3D data. The efficiency of generating animation is improved. The work of this paper shows that using the motioncapture technology can protect China’s national dance art and culture, and promoting the methods of catching threedimensional data of natural dance based on motion capture technology will have a positive social and economic benefit.
    应用与开发
    A Nonlinear Permanent Magnet Synchronous Motor Speed Control System 
    HU Hanwen;NIU Zhijia;SHI Mingquan
    2013, 1(1):  115-118.  doi:
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    The key of the design of the permanent magnet synchronous motor speed control system is quick to follow the performance of the control system. But conventional PI control algorithm is linear, which cannot effectively deal with the contradiction that exists between the system quick response with the overshoot in both cases. In this paper, space vector pulse width modulation (SVPWM) technology is used to achieve the motor drive and adjust the speed of the motor, using a single closedloop control strategy combined with variable speed integral with nonlinear PI control algorithm. The simulation verified the effectiveness of the algorithm, the system response process quickly and without significant overshoot, and can effectively inhibit the electromagnetic torque ripple in the motor running.
    Uboot Analysis and Transplantation Based on S3C6410 
    FENG Linlin;GENG Hengshan
    2013, 1(1):  119-121.  doi:
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    This paper analyzes the structure and the starting process of the new edition Uboot, gives a detailed transplant program based on S3C6410 development board, to achieve Uboot start from NAND Flash. Through the transplant of the net card DM9000A, Uboot network communication function is implemented. The paper has certain reference value for similar platform Uboot transplant.
    Design of Boomtype Roadheader Remote Wire Control System 
    WANG Xiaodong ;XIANG Yang;HU Hanwen;SHI Mingquan
    2013, 1(1):  122-125.  doi:
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    In order to realize the boomtype roadheader remote wire control system, this dissertation mainly proposes the control strategy for the body posture. The space trajectory control and sensing methods of roadheader cutting head are studied. The kinematics model between spatial location parameters is established. A remote wire control system based on PLC is designed and finished, which includes hardware and software system. By designing remote wire system, it can keep the operator away from the dust and hazardous work locations, improve the working condition, reduce personal injury accidents, and enhance the security of the tunneling operations.
    Research on Public Opinion Monitoring and Warning Indexsystem in Microblogging 
    WANG Changning;CHEN Weiqin;XU Hao
    2013, 1(1):  126-129.  doi:
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    This paper makes analysis to the propagation characteristics of microblogging, then puts forward some public opinion monitoring indexes of microblogging on this basis, and finally establishes the warning system.
    Design and Realization of Power Control System Based on PLC and KingView 
    JIANG Maoren;LIU Guodong;YANG Guowei
    2013, 1(1):  130-133.  doi:
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    According to the control requirements that a device works in different time and the same kind of device combinations different equipments under different test objects, the power system that is brought about by KingView(KingView 6.53) based on PLC is introduced, through the design of the system, on the one hand the safety of operation is guaranteed, on the other hand the efficiency of data collection is improved. The practice has proved that the control system can save costs, improve work efficiency, and have good application value.
    Research on Radio Coverage in Aircraft Cabin
    XIONG Feng;WANG Qi
    2013, 1(1):  134-136.  doi:
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    The aircraft cabin wireless communication technique is the technical difficulties of the wireless communication technology. In order to analyze accurately about the radio propagation coverage of the aircraft cabin, combining with 2.4 GHzWiFi signal, using simulation environment of Wireless Insite software, simulation is made. Join, then, make simulation, comparing with none in the cabin model, the model of the human body is put in the cabin to simulate for different simulation results.
    Development and Application of SearchPro4Excel for Excel
    WANG Haibo;WANG Zhaohua
    2013, 1(1):  137-140.  doi:
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    Excel is popular spreadsheet software for data processing. It is adopted in our work widely. Excel provides basic search function which can’t satisfy people’s advanced demands. This paper realizes Excel search addin component SearchPro4Excel. It provides task pane and dialog to interact with user. The result data is highlighted or copied to a new created file further. It can complement search function for Excel effectively.
    Tourism Souvenirs Customized System Development Based on Virtual and Collaborative Design
    LI Ning;YU Suihuai;YAO Lan
    2013, 1(1):  141-144.  doi:
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    With VR, network, digital technology development, consumers can realize the tourism product customization in the construction of virtual environment through Internet. This is a kind of interactive, realistic and realtime customization mode, the users can see their own customized virtual prototype on the computer screen, and ultimately receive it. The enterprise uses Internet to unite the companies, the design resources, intellectual resources and manufacturing resources in different regions, in order to meet the customers’ demands for personalized.
    Research on Missile Attackdefense Counterwork Simulation Based on Simulink
    ZHANG Gang
    2013, 1(1):  145-148.  doi:
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    The modeling of missile is complicated, its number of alternant information is larger. With the way of graphics and blocking in Simulink, Simulink models of missile movement module, rudder system module, guide and control module are made. The difficulty of modeling for the complicated dynamic system is solved. Adding the way of mobile changing orbit to attaching missile model, it not only validates abilities of attacking and defensing of missile, but also increases simulation effect of attackdefense counterwork.
    Study on Technology and Strategy of Terminal Equipment Physical Isolation
    ZHAO Yi
    2013, 1(1):  149-152.  doi:
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    Aiming to prevent the damage of information in computer from Internet and local network, the existing physical isolation technology is analyzed, specially for the situation, that the hard drive of the terminal equipment carried privileged information has to connect with Internet. Based on computer information security to identification, referenced of the lesson on access control and automotive antitheft technology, a new technical strategy is proposed, which combines system modules with physical isolated parts as one production by using identity cards, car alarm remote control as the certificate of authentication, to avoid remote and local aggression. The new strategy is the integration of existing mature technology, therefore it’s entirely feasible and worthy of promotion.
    Security Analysis and Improvement of WPA/WPA2PSK
    WU Yichen
    2013, 1(1):  153-157.  doi:
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    In order to overcome the vulnerability of WEP itself, WiFi Alliance puts forward WPA/WPA2 security solutions. But in actual applications, WPA/WPA2 still exist some defects which can be attacked. Especially in WPA/WPA2PSK mode, user passphrase can be acquired through the dictionary attack after capturing several specific wireless packets. Through the analysis of the dictionary attack principle, an improved method of dynamic key negotiation in WPA/WPA2PSK mode is developed. The improved method is based on symmetric key encryption technology and could avoid user passphrase suffering from dictionary attack. The improved method strengthens the safety of WPA/WPA2PSK mode.
    Construction of GPS Vehicle Management System Based on GPS/GPRS/GIS Platform
    HOU Zhonghui
    2013, 1(1):  158-160.  doi:
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    With the increase in firefighting and rescue tasks, the role of fire protection is even more important. How to improve the rapid response capability of the fire fighting, the dynamic management, scheduling and conductor of the fire vehicles is the key, which determining the combat effectiveness of the fire prevention department. Using the mature GPS/GPRS/GIS platform, this article proposes a GPS vehicle management system to enhance the combat effectiveness of fire protection.
    Design and Implementation of Database’s Caseexecutable System Based on Wiki
    LIU Jinlong;NING Hong;YIN Junwen
    2013, 1(1):  161-164.  doi:
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    In traditional database cases teaching, most of the cases are static, singleversion, so, they can’t be executed. It is impossible to roll back the design in the case, do comparative study with multiple versions, modify the case or collaborate with others which impair the effect of the case teaching. To solve these problems, this paper proposes an executable case system based on Wiki, and discusses how to implement it. By reducing professors’ workload and activating learners’ initiative to study, the environment of database teaching will be improved.
    Research on Database Test Data Generation Based on MultiRQP Method
    WANG Yingying
    2013, 1(1):  165-167.  doi:
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    Software test is necessary and important to ensure software quality, and database test has been attached great importance to. Automatic test data generation is the important work of database test. The quality of the test data generation will directly affect the completeness and efficiency of the test. Firstly, the paper explains the basic idea of MultiRQP method. Secondly, by way of example it detailedly analyzes the two elements of the application of this method, that is, RQPdisjoint and Query Refinement. Then, it gives the application development. Finally, the paper points out the direction of further research.
    Research on Application of Aviation Equipment IETM Based on .NET Technology
    LI Baogang;
    2013, 1(1):  168-171.  doi:
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    According to the needs of equipment maintenance infomatization, the design for IETM of aviation equipment based on .NET technology is given. It is introduced about IETM’s concept and .NET technology and standard of IETM. The IETM of aviation equipment based on .NET technology is designed from different sides, including the data structure, the system’s main interface, the catalogue, the adaptability filtering, text and picture and video’s display, etc. The specific means in developing the IETM is also given. The design enriches the developing method of IETM.
    Design and Implementation of Project Schedule Management  Based on PowerBuilder’s DataWindow
    HUANG Yue;YOU Dan;YANG Cunbang;XIONG Yong
    2013, 1(1):  172-175.  doi:
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    This paper introduces the thought and the methodology to implement the project schedule management by using DataWindow, under the developing environment of PowerBuilder 10. Traditionally, the schedule management interface reveals the schedule of the project by the data in data list. This schedule management interface is similar to Gunter graph, using bar chart instead of pure data, which directly reveals the project’s schedule.
    Application of LabVIEW in Commissioning of CRH380BL EMUs
    LIU Yuling;ZHANG Yongbo;YANG Guanjun;LI Wenbin;JIA Min
    2013, 1(1):  176-179.  doi:
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    Based on CRH380BL, a simulated tester for the single car commissioning is developed by LabVIEW software, which completing functional commissioning of CRH’s components in single car commissioning procedure. In practice, it makes the commissioning more intelligent, and improves the efficiency of commissioning procedure of CRH380BL EMUs.
    Modeling and Optimization of Steel Enterprise Energy System Based on MIND Method
    CHEN Jing;DAI Yiru;WANG Jian
    2013, 1(1):  180-184.  doi:
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    According to characteristics of production process for steel enterprise, visualized system modeling and model equations are set up by MIND method, which is a kind of energy systems analysis method for enterprises. With the total cost of energy and materials for the target function, the model equations resolution and optimization results show that: reasonable arrangement of the working time and production capacity of equipment, can make the cost to the minimum, because of the difference of the electricity price in different period; At the same time, different cost reduction space also can be got, when the energy recycling and the different performance of recycling equipment are considered.
    Design and Implementation of Document Information Management  System of Construction Machinery 
    WANG Yangang;HE Bin;SONG Wei;SUN Jichao
    2013, 1(1):  185-188.  doi:
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    In this paper, a Webbased document management system is established to achieve the management, integration and sharing of the document information involved in the enterprise management and other activities. By systematic research and analysis on the actual needs of the enterprise, the document type and object are finished, and the basic flows of the document management are proposed. The document database is analyzed and designed, the Webbased system model is proposed and a multilevel document management is developed. The practice shows that the system is able to achieve the integration, management and sharing of document information.
    Analysis of “Shortboard” in Java Learning
    ZHANG Jingjing
    2013, 1(1):  189-191.  doi:
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    By two simple examples, the “shortboard” of Java learning that may be ignored by the beginner is parsed. Using the concept of “shortboard”, the importance of the algorithm and the corresponding efficiency of the Java program is introduced.
    Mining out Top10 Hot Hits in Biomedicine from PubMed
    XU Dan;ZHU Fei
    2013, 1(1):  192-194.  doi:
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    PubMed is a database used to retrieval biomedical literatures. It, however, can’t help us find out the hot topics in recent years. Nowadays, there are some researchers working on the comparative analysis about different tools as same as PubMed, and some other ones bend themselves to data mining on one special field. Our research is finding out the hot topics by analyzing the numbers of publications of some keywords. Here we referred to Time Magazine to list 34 keywords, used Eutilities to get the numbers of publications from PubMed automatically. By analyzing these numbers we can then conclude the hot topics in recent years.
    Research on Performance Monitoring About Heterogeneous Storage System 
    LI Zhaohu;LI Zhanhuai;ZHANG Xiao;LI Xiaohui
    2013, 1(1):  195-199.  doi:
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    To monitor the performance of heterogeneous storage systems, traditional monitoring methods have problems such as single monitoring, not enough granularity of data collection, lack of effective analysis to data and difficult to save the effective raw data at low cost. This paper studies the performance monitoring of key technologies in heterogeneous storage environments and achieves performance monitoring platform for distributed, heterogeneous storage systems. After the monitoring results, the proposed method and system can monitor the performance of the server farm in the storage environment and the processlevel performance monitoring and analysis. The system helps manager for analysis and decision, and it has great practical value and research value.
    Analysis of Housing Demolition Management Software Design Characteristic 
    GAO Yuanhong;FU Yabing;CHEN Jian
    2013, 1(1):  200-202.  doi:
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    Based on the conditions of demolition company, that it is difficult to form a data from the information collection, processing, reporting management software platform, this paper presents a software development solution based on the characteristics of demolition company. Combining with the specific project, the “decentralized collection, centralized treatment” information acquisition strategy and the state transition model of project management are elaborated. The data processing, report generation and other functions to achieve are described.
    Research on Multichannel Interaction Based on GIS Operation Command and Decision Support System
    NIE Yanfeng;TIAN Tian;WU Hao
    2013, 1(1):  203-206.  doi:
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    HCI is an important factor for the decision support capacity and efficiency of operation command and decision support system. By analysis of the characteristics of humancomputer interaction in the process of operation command and decision support, this paper studies the present new features of the natural humancomputer interaction technology represented by penbased user interface. Based on the present GIS system, it builds up a dynamic loading model of multichannel interaction in order to improve the efficiency of humancomputer interaction and the interacting ability of operation command and decision support system with penbased interaction, multitouch and video media as the multichannel interactive modes.