Computer and Modernization

Scheduling Optimization of Dynamic Flight Landing Based on Genetic Algorithm

FENG Xing-jie;MENG Xin

2012, 1(1): 1-5. doi:10.3969/j.issn.1006-2475.2012.01.001

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Dynamic flight scheduling means updating scheduling scheme timely, when the queue of the flight to be scheduled changes. This requires that scheduling algorithm should obtain stable sort results. An improved genetic algorithm based on MPS restriction is proposed to solve the problem that the results of GA aren’t stable. It can avoid effectively the situation of premature convergence and improve efficiency of search. The results show that the scheduling algorithm can get stably the optimal solution.

New Event Detection Based on LDA and Correlation of Topic Terms

HUANG Ying

2012, 1(1): 6-9,13. doi:10.3969/j.issn.1006-2475.2012.01.002

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Topic detection and tracking(TDT) is widely used. As one of research tasks for TDT, new event detection can provide prior knowledge to TDT, so it is of great theoretical research significance in the field of TDT. Because LDA model can not automatically identify new events, and the number of LDA topic is determined by the artificial, or by repeated experiments, it is of low efficiency. This paper presents a new method based on LDA and correlation of topic terms, which considers the correlation of subject terms and report time, it can dynamically adapt updated topics and then detect the new event. Experiment results demonstrate that this method is of some advantages and the sensitivity of new events detection is increased.

Detecting and Identifying Gross Errors Based on “3σ Rule”

LI Jiu-long;ZHOU Ling-ke

2012, 1(1): 10-13. doi:10.3969/j.issn.1006-2475.2012.01.003

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Measurements can be contaminated with gross errors due to various reasons such as measurement irreproducibility, sensor problem and other reasons. The direct data reconciliation will diffuse gross errors, which affect reliability and accuracy of data reconciliation results. As a result, before the data reconciliation, it needs to identify and remove the measurement data contaminated with gross errors. The existing methods of gross errors detection have not a good detection result for limited gross errors (less than or equal to 3). This paper presents a new method of detecting and identifying gross errors based on “3σ rule”, which not only has a good detection result for limited gross errors but also for more gross errors. By using the method of collective compensation for gross errors, this method can effectively prevent the emergence of the singular matrix.

Design and Implementation of Computer-aided Learning System Based on Secondary Search

LI Zhi-biao;LIU Min;LIAO Chun-hua;JIANG Yuan

2012, 1(1): 14-16,2. doi:10.3969/j.issn.1006-2475.2012.01.004

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With the rapid development of computer network technology, in order to meet student extensive learning and individual needs, the secondary search computer-aided learning system is provided. The system takes full advantages of mass information. With retrieving information processing and filtering by the meta search engine, the system filters out the most appropriate knowledge needed information to be presented to the learners. Practice proves that the learning effect of after-school is markedly improved with the secondary search computer-aided learning system.

Weak Signal Detection Based on Improved Chaotic Oscillator System with Dual Coupling

SUN Qing-wen;ZHANG Jin-feng

2012, 1(1): 17-21. doi:10.3969/j.issn.1006-2475.2012.01.005

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The traditional weak signal detection theory based on single Duffing chaotic oscillator system is described. In the traditional method based on chaos theory for detection of weak signals in strong noise environment, there prone to be instability in the phase change of system and the anti-noise should also be further enhanced. For solving the problems, the method of detecting the weak signal in strong noise environment based on double Duffing coupled improved oscillator system is proposed, and the weak sinusoidal signal detection in strong noise environment is finished the simulation by using this method. By simulation, the result is that based on the system of two-coupled improved chaotic oscillator, the weak signals in the strong noise environment can be better detected and the noise is better suppressed.

An Improved K_means Clustering Algorithm

HU Wei

2012, 1(1): 22-24,5. doi:10.3969/j.issn.1006-2475.2012.01.006

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This paper presents an improved clustering model based on distance measurement, in order to solve the problem of slow convergence rate of traditional K_means clustering method by selecting initial cluster centers randomly. By using effective heuristic information, this method selects better clustering centers and reduces the iteration steps of attaining stable clustering state. Then the speed of algorithm is accelerated. Simulation results on UCI datasets demonstrate that comparing with traditional K_means clustering means, the improved K_means has fast convergence rate and the better clustering results are obtained by this model after less iterations.

Application of Best Clusters Mining in Customer Trading System

CHEN Wen-jun;CHEN De-hua

2012, 1(1): 25-29,4. doi:10.3969/j.issn.1006-2475.2012.01.007

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With the development of IT technology, customer trading system is developing rapidly, and plays an increasingly important role in real life. Along with the trading number growing, using customer trading behaviors and historical trading data, a well decision support could be gained from system administrator. The algorithm of best cluster mining could find a most closely associated sub-graph from a graph structure. The most closely associated customers could be effectively found from customer trading system by way of algorithm GG-LSH, thus some effective decision supports are provided for people.

Research on Driving Route Choice and Time Prediction of Ammunition Delivery

HANG Yi;YU Si-wei;LÜGong-wei

2012, 1(1): 30-33,6. doi:10.3969/j.issn.1006-2475.2012.01.008

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Ammunition supply is the lifeblood of combat troops, active, accurate and rapid implementation of ammunition delivery has become an important growth point in modern warfare, fast and accurate driving route choice and time prediction of ammunition delivery are crucial. Through analyzing the traditional methods of ammunition delivery, using satellite images processing technology, the article establishes the driving route choice and time prediction algorithms of ammunition delivery and application policy model. The traffic flow of the route is the least, it is the best. The speed of traffic flow is used as the speed of delivery vehicles to predict arrival time of the ammunition delivery. In order to improve the reliability and accuracy of traffic flow prediction algorithms, statistical data mining is used to optimize the algorithm parameters, and thus to reduce the algorithms time complexity by use of parallel computing, to achieve optimal route selection of ammunition delivery and reliable, accurate and fast prediction of arrival time.

An XML Retrieval Document Similarity Algorithm Based on Bayesian Classifier

HAN Xiao-mei;ZHENG Hong-yuan;DING Qiu-lin

2012, 1(1): 34-36,8. doi:10.3969/j.issn.1006-2475.2012.01.009

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At present, the similarity calculation for inquires is usually considered by comparing retrieval results to inquires. This paper proposes an algorithm based on Bayesian classifier to calculate the similarity of XML search results. On the basis of working out similarity of each document and inquire, it divides XML retrieval documents into relevant sets and uncorrelated sets by using Bayesian classifier. Then, final similarity is obtained by calculating the similarity of relevant documents and uncorrelated documents. At last, the experimental analysis shows that the new algorithm improves the retrieval performance effectively about 15 percent higher than traditional method without affecting recall ratio.

Research on Application of Data Mining Based on Genetic Algorithm in Library

CHEN Dong-li

2012, 1(1): 37-39. doi:10.3969/j.issn.1006-2475.2012.01.010

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As traditional information provider, the library accumulates lots of information resources in the long-term service process. Inducting data mining can mine valuable information from existing data resources, to optimize the storage of library, to meet the demand of readers and to provide decision support better for the books management personnel. The paper firstly introduces the concept of data mining and association rule mining, then applies genetic algorithm to association rule mining, finally mines some association rules about library readers and books.

Description of Cloud Manufacturing Service Based on Semantics

WU Xue-jiao;LIU Xian-hui

2012, 1(1): 40-43. doi:10.3969/j.issn.1006-2475.2012.01.011

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Cloud manufacturing is a new model of manufacturing service, which is service-oriented and knowledge-based. This paper analyzes classification and features of cloud resource, proposes an ontology-based knowledge modeling method in cloud manufacturing field, and builds an extension ontology model based on OWL-S. On the platform of cloud manufacturing service, this paper lays the foundation for the implementation of semantic service discovery, matching and combination.

Overview of Conceptual Modeling

YANG Bin;QI Yu-dong;MENG Fan-lei

2012, 1(1): 44-48. doi:10.3969/j.issn.1006-2475.2012.01.012

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Conceptual modeling is the activity of creating models. Models that describe problems are independently from the technology and strategy used to solve the problem. In the past few decades, a large number of conceptual modeling methods and tools have emerged. Many theories such as ontology linguistics and cognitive science enhance the concept modeling theoretical basis. Ontology based conceptual modeling got full attention. The development of conceptual modeling, conceptual model language, ontology-based conceptual modeling and quality evaluation of the conceptual model have been studied.

Test Cases Auto-generating Based on Genetic Algorithm and Its Improved Method

HU Wen-huan;QIAN Yue-ying

2012, 1(1): 49-52. doi:10.3969/j.issn.1006-2475.2012.01.013

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Genetic algorithm is currently an adaptive searching algorithm which gives a new solution to generate test cases. However, when it is used to generate test cases, the randomness of recombination and mutation makes the diversity of the population easily destroyed and leads to the search space getting smaller, finally results in the algorithm finding a wrong local optimum. Moreover, recombining and mutating freely makes the searching efficiency very low. This paper introduces an improved method, with a mutation control strategy and an optimal control strategy added, which effectively improves the searching capability and gets optimal solution capability of the algorithm.

Component Integrated Framework Based on Software Layer Framework Pattern

SHEN Ning

2012, 1(1): 53-56. doi:10.3969/j.issn.1006-2475.2012.01.014

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As a part of component-based software development, components composition plays a key role. The paper brings forward the framework pattern of common layer for composition with the background of software framework. Thus, the architecture-based component integration framework is completed.

Positioning Algorithm Using Digital Camera Based on Linear Model

LI Qi;WANG Bo

2012, 1(1): 57-60,7. doi:10.3969/j.issn.1006-2475.2012.01.015

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In order to solve the problem that most positioning algorithms require special devices more or less, the digital camera being used universally is applied for locating object. According to binocular location theory, a linear model of imaging is established and a method for examining this model is designed. Then the precision and stability of imaging are analyzed in detail. This model is simple, low computation cost and well scalable, which can provide good reference value for multi-camera situation and can be used widely.

Patterns with Cyclic and Dihedral Evolving Symmetry Generated by Dynamical Systems

LU Jian;WU Hai-yan;TU Guang-yi

2012, 1(1): 61-63. doi:10.3969/j.issn.1006-2475.2012.01.016

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This paper investigates the invariant function method for generating images with cyclic and dihedral evolving symmetry by means of dynamical systems. By taking chaotic functions with cyclic and dihedral evolving symmetry to be iterating functions and constructing their corresponding invariant functions, visually fascinating patterns with such symmetries can be generated in this way. The method presented here provides a novel approach for devising planar symmetric patterns.

Sub-pixel Corner Detection Algorithm of Chessboard Image Based on Improved SUSAN Operator

WANG Rui;YANG Run-ze;YIN Xiao-chun;LUO Zhi-hai;

2012, 1(1): 64-66. doi:10.3969/j.issn.1006-2475.2012.01.017

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One of the disadvantages of the SUSAN operator is that it just takes into account USAN’s size without considering USAN’s shape in detecting feature points. It’s difficult to distinguish the chessboard corners and edge points for the SUSAN algorithm. Therefore another SUSAN circular mask is added within the SUSAN circular mask to overcome this defect. Moreover, sub-pixel coordinates corners are calculated with quadric surface fitting. Experimental results show that the proposed algorithm has high precision and can provide reliable data for high-precision camera calibration.

Stereo Matching Algorithm of Adaptive Window Based on Gradient

LIU Jin-xin;ZHANG Qi

2012, 1(1): 67-69,8. doi:10.3969/j.issn.1006-2475.2012.01.018

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Aiming at the problem that the support windows are selected difficultly in stereo matching algorithm based on local areas and the support windows are bigger or smaller, a new stereo matching algorithm of adaptive windows is proposed. First, the algorithm acquires size of support windows adaptively by computing gradient of pixel with Sobel operator, then searches the most appropriate pixel to get disparity image by function of SAD or NCC. In addition, the method is improved by decreasing the computation in selecting size of windows. The results show that this algorithm has higher precision and its calculating time is shortened by nearly 5%.

Two-dimensional Bar Code Location Algorithm Based on Multi-scale Segmentation

YANG Bin-wei;ZHANG Yi-fang

2012, 1(1): 70-74. doi:10.3969/j.issn.1006-2475.2012.01.019

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For the correct localization of the two-dimensional bar code in the image, the paper proposes a multi-scale segmentation location algorithm. In the first segmentation, the image is divided into several blocks, then, according to the black and white pixel ratio, variance of high-frequency sub-band coefficients, the blocks would be classified into bar code and non-bar code areas. By gradually increasing the scale, the block is divided into four sub-blocks, the segmentation result is recursively refined at each scale based on the multi-scale segmentation model. And so on, until the finest scale, the location of bar code area in the image is gotten. Experimental results show that the algorithm can be better to locate the bar code area. Especially in the case of complex background with large amounts of text, this method has certain advantages.

Design of Real-time Frame Evaluation for Embedded Application

CHEN Ya-bing;ZHAO Zhi-hao

2012, 1(1): 75-77. doi:10.3969/j.issn.1006-2475.2012.01.020

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This paper presents a method for camera quality evaluation in embedded application, which gets scores of real-time frame according to the selection of experienced image areas with the measurable character of RGB histogram. The method is not focused on the captured images but the real-time frame evaluation during preview, so the inexperienced users could get high quality with tuning of capture angle and menu performance.

Application of Image Recognition Technique in 3D-RPG Game Development

MAO Ya-qiang

2012, 1(1): 78-82. doi:10.3969/j.issn.1006-2475.2012.01.021

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This paper develops a game engine named RPGGE(Role-Playing Game Game Engine) based on OGRE(Object-oriented Graphics Rendering Engine). Image identification is integrated into RPGGE, so players may interact with game through hand gesture recognition by camera. RPGGE development consists of rendering system, in-out system, audio system and identification system.

Design and Implementation of Vehicle Management System Based on B/S Construction

ZHANG Yong-feng;JIANG Yong-rui

2012, 1(1): 83-86. doi:10.3969/j.issn.1006-2475.2012.01.022

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This paper carries on the analysis to the enterprise vehicle management service demand, uses the .NET core technologies and three-level construction, designs a vehicle management platform prototype based on the B/S construction of Web, explains in detail the system design plan and the function constituents as well as the realized method.

Design & Implementation of ATC Assistant Information System Based on C/S Structure

YANG Xin-sheng;LIU De-hua

2012, 1(1): 87-90,9. doi:10.3969/j.issn.1006-2475.2012.01.023

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The research object is ATC (air traffic control) assistant information system, the article emphatically narrates demand analysis, master plan of each functional module, UML use case model design, the database design and the main modules used in the system. The program language of the system is Visual Basic which is object-oriented, the data base is SQL Server. To improve operating efficiency and system development, the system uses C/S architecture.

Research on Colleges Teaching Quality Evaluation Based on Rough Set

SHAO Li

2012, 1(1): 91-94. doi:10.3969/j.issn.1006-2475.2012.01.024

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Teaching quality assessment is an important measure that colleges and universities take to improve teaching quality. A scientific and sound teaching quality assessment system will motivate teachers to improve teaching methods and perfect teaching means. The weight of the evaluating indicators in the system is analyzed from a rough set theory perspective. The purpose is to determine their respective significance, make a judgment as to if the current assessment system in Aba Teachers College is objective, and provide a decision-making basis for the improvement of it. In a simulation experiment, historical data concerning student evaluation of teaching is studied and analyzed by using the methods provided by the rough set theory. The experiment shows that the method is practical.

Design and Construction of Parkinson’s Disease Medical Records Management System Based on MVC

ZHAN Xiu-Ju;LIU Xiu-feng

2012, 1(1): 95-96,9. doi:10.3969/j.issn.1006-2475.2012.01.025

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Parkinson’s disease medical records management system is an important way to collect and manage Parkinson's disease clinical data, and also a preliminary tool for the data mining of the medical records. This system is based on MVC, and developed by C#.NET and Access 2003. The functions required is realized and the research object is successfully achieved.

Design and Implementation of Aircraft Spare Parts Procurement MIS

LI Wei-ling;LIU Chen-yu;ZHANG Su-qin;ZHANG Li

2012, 1(1): 97-99. doi:10.3969/j.issn.1006-2475.2012.01.026

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Based on database technique and Browser/Server framework, this paper analyzes the system requirement and database frame of aircraft spare parts procurement MIS, and then explains the implementation technique.

Design and Implementation of Financial Management System for Universities Laboratory

ZHANG Rong-rong;HUANG Xiong-bo

2012, 1(1): 100-103. doi:10.3969/j.issn.1006-2475.2012.01.027

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This paper starts with the problem of universities laboratory funds management, through demanding analysis and planning, finally the financial management system for universities laboratory is designed. The key data is encrypted by using MD5 to make sure the security of system, at the same time, the system uses concurrent control mechanism to prevent variance of data.

A Survey of Research on Mobile Grid

CAI Zhi-ming;HU Chi;CHEN Chong-cheng

2012, 1(1): 104-110. doi:10.3969/j.issn.1006-2475.2012.01.028

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The background of mobile grid and its development are introduced firstly. Then a survey of research on architecture of mobile grid and key technologies including service sustaining technology, service discovery, task scheduling, and utility computing is carried out and key problems needed to be solved are also illustrated. In the end, the prospect of application and development is given, and the position of mobile grid, namely as an extension of cloud computing in wireless area, is proposed.

Design of Signal Transmission System Based on Power Line

LIU Quan-qiang;LIU Jing-hao;LIU Fei

2012, 1(1): 111-114,. doi:10.3969/j.issn.1006-2475.2012.01.029

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Now the main technologies, which are used for networking in the low-voltage power distribution spot, are the fieldbus technology, industrial ethernet technology and wireless communication technology. But they all have their own disadvantages. In order to overcome the shortages of the traditional methods, a new method based on BPLC(broadband power line communication) is introduced. Its advantages are no-wiring, high communication rate, low cost of equipment and good mobility of node. Based on the method the overall design of a new distribution automation system is given. The hardware and software design of the PLC terminal module are introduced in detail. The results indicate that the system can realize remote-measurement, remote-communication, remote- regulation, and remote- control.

Research on Authorization Mechanism in Presence Server

YE Zi-ning

2012, 1(1): 115-118. doi:10.3969/j.issn.1006-2475.2012.01.030

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With the development of IP communication, Presence plays an increasingly important role in communication system. Presence information is sensitive and private, a Presence server needs authorization from the presentity prior to handing out Presence information. The IETF proposes two solutions to deal with authorization problem: Watcher Info mechanism and XCAP mechanism. This paper describes the implementation of the two mechanisms in a Presence server based on SIMPLE, comparatively analyzes the advantages and disadvantages of the two mechanisms, and based on this, discusses their prospects.

Research on Extending 1553B’s Bandwidth Based on DMT

GAO Guang-jie

2012, 1(1): 119-121. doi:10.3969/j.issn.1006-2475.2012.01.031

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As the traditional MIL-STD-1553B cannot meet the demand for high-speed data transmission and replacing the existing data bus can be cost prohibitive, there is an urgent need to upgrade the 1553B system to offer high-speed communication interface without interfering the existing baseband communication. This paper analyzes the characteristics of the channel in 1553B and selects the discrete multi-tone modulation (DMT) as the technology of extending the bandwidth of 1553B for its high spectrum efficiency. A scheme of upgrading 1553B compatible with the existing system based on discrete multi-tone modulation is proposed and the key technologies involved in the scheme are discussed.

Research and Implementation of RESTful Web Services

JIANG Nan

2012, 1(1): 122-125. doi:10.3969/j.issn.1006-2475.2012.01.032

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The development of E-commerce encourages more and more buyers to purchase products via the Internet. Although most of business websites provide comprehensive query functions to help buyers find out what they want, unfortunately, when it comes to huge quantities of queries of different products, this kind of human query in front of a screen becomes time-consuming and tedious. And it is not easy for programs to extract Web data from Web pages. One reason is that the structure of Web pages may change. This paper uses the thinking of Web service to solve this problem. Web data extraction is done through a kind of Web service, independent of Web pages, provided by the website. This paper analyzes the way of thinking behind REST (Representational State Transfer) and illuminates the central abstraction concept of resource and the feature of emphasizing the uniform interface, which distinguishes REST architecture style from other network-based architecture styles. It points that RESTful Web service is a better solution to build Web services, compared with SOAP-style Web service. Constructing a RESTful Web service which provides electronic product query service based on Apache CXF framework in the context of Spring technology, and based on this service, a data extraction client can obtain Web data conveniently using XML parser tools.

Application and Analysis of Wireless Positioning System Based on TDOA

ZHOU Wen-ting;ZHU Yan

2012, 1(1): 126-128. doi:10.3969/j.issn.1006-2475.2012.01.033

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With the development of communication technology, wireless positioning technology is widely used in all sectors of society. This paper firstly analyzes the model of TDOA technology and realizes the location of a mobile station through an algorithm. Secondly, TDOA technology is applied in locating the bad network of wireless network optimization system. At last, this paper uses Matlab to simulate the location of mobile station based on four base stations and get an ideal simulation result.

A Review of Fault Diagnosis Technology for Wireless Sensor Network

ZHANG Yong-jian;WANG Man

2012, 1(1): 129-131. doi:10.3969/j.issn.1006-2475.2012.01.034

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The research on fault diagnosis technology is important to improve the reliability of wireless sensor network system. This paper reviews recent domestic and international fault diagnosis technology research on wireless sensor network system, including node-level hardware failure, software failure and network-level fault diagnosis techniques. And four major diagnostic techniques are made a comparison over the diagnostic speed. Finally, the sensor fault diagnosis technology trends and issues are to be made a certain analysis and discussion.

Research on Audio Processing Technology in OpenH323 Video Conference

CHEN Ming-dong

2012, 1(1): 132-134,. doi:10.3969/j.issn.1006-2475.2012.01.035

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With the development of economy, many companies have established their own network video conference system. These network video conference systems are the original intention of working for them to bring convenience, but how many systems truly bring to their working convenience? With its reason, one of the most important problem is to pass the audio processing technology, resulting in a meeting during voice intermittently, can not hear clearly, the effect is not good, ultimately companies spend big price to buy enough of the system which can only be a vase. This paper is aimed at this phenomenon from the audio processing to address the root which causes this problem, finally through the test data, it indicates the effectiveness of the programme.

An Improved Dynamic Load-balancing Algorithm for Cluster

ZHOU Song-quan

2012, 1(1): 135-139. doi:10.3969/j.issn.1006-2475.2012.01.036

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In the study of cluster system, the load-balancing algorithm is an important direction, because it is related to whether the multiple servers, after integrated into a cluster system, are able to collaborate well to better complete the task the users submit. To achieve this goal, the paper, basing on the analysis of the existing load-balancing algorithms, proposes an improved load-balancing algorithm that can dynamically collect the real-time server load indexes then calculate the weights of the servers in the assignation of the connection requests users submit. The test results show that the improved method can effectively prevent the servers from tilt and achieve a good load-balancing effect.

Development of Mobile Applications Based on SFS 2X Platform

CHEN Yan-ling;ZHOU Jie;SUN Da-song

2012, 1(1): 140-144. doi:10.3969/j.issn.1006-2475.2012.01.037

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With the development of mobile devices, mobile applications have become richer. The main content is to develop a mobile Internet application based on SmartFoxServer platform, which can interact with SmartFoxServer 2X server in real-time, such as updating and persistenting player information. This paper briefly introduces the Java extension of SmartFoxServer and composition of Android applications. By implementing a wireless network gaming system, the paper details its development principles and process. Finally, by the implementation of the game, it further illustrates the application prospect about Android development on the SmartFoxServer 2X platform.

A Method of Real-time Rendering for Large Terrain Based on GPU

ZHANG Li-min;YAN Wen-jun

2012, 1(1): 145-150. doi:10.3969/j.issn.1006-2475.2012.01.038

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In the process of rendering for large terrain, producing images clearly and accurately are required. This paper puts forward the reasonable solution from the organization of the real-time terrain data, drawing LOD selection standards, LOD optimization and optimization of view frustum culling. The result shows that the method can make full use of GPU draw, which can be applied to rendering for large scale terrain.

Application of Behavior Analysis in Linux Kernel Porting Based on Simulation Platform

HAN Ming-xiu;FAN Jing;SHAO Zuo-zhi

2012, 1(1): 151-153. doi:10.3969/j.issn.1006-2475.2012.01.039

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This paper discusses a solution which applies the notion of behavior analysis to the debugging and testing process of Linux kernel porting on simulation platform. The outstanding feature of testability and the principle of software-tracking in the simulation platform are fully discussed. The behavior particle is also defined according to the special environment. Moreover, this paper introduces some special data structures and algorithms to illustrate the behavior tracking and analysis, and analyzes the applicability of this solution.

A Fast Building Method for Embedded Simulation Platform Based on SystemC

FAN Jing;HAN Ming-xiu;SHAO Zuo-zhi;ZHANG Chi

2012, 1(1): 154-156,. doi:10.3969/j.issn.1006-2475.2012.01.040

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This paper discusses a method to build simulating platform directly on command line rather than compilation in environment SystemC, describes the procedure of building simulating platform, analyzes the types of modules and the differences on communication between different types of modules. The creation of modules, especially the scheme of communication link between different types of modules is discussed. The demands for module structure based on this method are analyzed. A way to realize checkpoint is given.

Automatic Control Method of Reservoir Numerical Simulation Based on Eclipse

LI Ke;HU Gang

2012, 1(1): 157-160. doi:10.3969/j.issn.1006-2475.2012.01.041

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Based on the application study, two new methods are presented to control reservoir numerical simulation run automatically by using Eclipse keywords. The practical application shows that the method which uses the keyword ACTIONX is a simple while utility technology to control numerical simulation run.

Study of Software Protection Method Based on Cyclical Guards

WU Shao-jie;HE Rong-yu;XUE Chang-song;XIE Hong-tao

2012, 1(1): 161-165,. doi:10.3969/j.issn.1006-2475.2012.01.042

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Protecting software codes from illegal tampers is a severe problem for software developers. Based on the idea of guards, this paper proposes a cycling guards model which can protect the integrity of the program with more flexible way. All the guards form cycle chain to ensure that each guard is protected by other guards, to protect the integrity of the software itself, at the same time ensuring the security of guards. Meanwhile, the paper proposes a protocol of data integrity check to check integrity of checking guards real-time and proves the protocol’s security.

Research on Intelligent Tracing System Based on P2P Security

DENG Jia-ming

2012, 1(1): 166-169. doi:10.3969/j.issn.1006-2475.2012.01.043

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Aiming at the important safety problem brought by the P2P application of campus network, the paper establishes a intelligent tracing system based on P2P security, achieves the identity track, behavior track, real-time track and feedback track of P2P users, properly solves various potential safety hazards brought by the dynamics of P2P users, the open of resource sharing as well as the randomness of user operation, thus efficiently improving the safety and reliability of the P2P application of campus network.

Design and Implementation of Gigabit NIDS Based on FPGA

LI Zhi-xiang;LIN Ke-cheng;WANG Yin-long;WANG Xi-wu;LI Qian-jin

2012, 1(1): 170-172. doi:10.3969/j.issn.1006-2475.2012.01.044

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Traditional software-based network intrusion detection systems (NIDS) are becoming strained as network data-rate increases. A gigabit NIDS is implemented based on FPGA. The computationally intensive components of a NIDS such as stream capturing, packet resolving and pattern matching of rule set are implemented based on high-speed logic cells of FPGA. While human-machine interfacing module is implemented based on embedded system. Test shows that when working in pressing gigabit network, the system can achieve zero-loss rate.

Access Control System Based on OPC

ZHENG Feng-shou;LI Ai-hua;OU Jian;WANG Bao-gui

2012, 1(1): 173-175,. doi:10.3969/j.issn.1006-2475.2012.01.045

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Aiming at the difficulty of system compatibility and information sharing in the implementation of system integration of access control system to other security subsystems, the access control system based on OPC is proposed. The monitoring software is developed with KingView when comprehensive management and information sharing and function linkage are realized by system integration. Practice proves that the access control system based on OPC can effectively solve these problems and realize system integration.

Research on Active Suspension Control Technology

ZHOU Rou;GUO Zhi-feng

2012, 1(1): 176-180. doi:10.3969/j.issn.1006-2475.2012.01.046

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This paper builds 1/4 of an active suspension model in MATLAB/Simulink based on the active suspension control theory. After simulation focused on the active suspension with LQG controller and fuzzy logic controller, the results show that the controlled active suspension has a great improvement in ride comfort and can reach a better performance relative to the passive suspension.

Design and Implementation of Mobile Phone Contacts Based on 16-bit MCU

ZHANG Jing-jing;Gulimila KEZIERBIEKE;GUO Bin

2012, 1(1): 181-183,. doi:10.3969/j.issn.1006-2475.2012.01.047

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Based on 16-bit SPCE061A, this paper designs a mobile phone contact, which is displayed by SPLC501 LCD. And the detail of contact is recognized through SPR4096 memory which is used to write Chinese characters. It’s necessary to complete the basic operations, such as adding, deleting, and query by using 4×4 keyboard. Adding the voice dialing with SPC function library, some functions of mobile phone contact are achieved.

Application of FPGA in Control Circuit of Optical Switch

FAN Ting-ting;ZOU Qiong

2012, 1(1): 184-187. doi:10.3969/j.issn.1006-2475.2012.01.048

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According to the function of optical switch in optical transmission and exchange, this paper briefly introduces the hardware connection of the optical switch driving circuit, and elaborates the implementation of optical switch time sequence by FPGA.

Design and Implementation of Campus Net Port Intelligent Analysis System

ZHANG Chun-hua;LI Lan-you;HU Cheng-hao

2012, 1(1): 188-190,. doi:10.3969/j.issn.1006-2475.2012.01.049

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Based on Beta network management system with SNMP, the information net port intelligent analysis and design strategies are shown, including the data collection strategy, data analysis and processing specifications and net port intelligent analysis process. The practical application of net port intelligent analysis system can give the net port opening rate and utilization statistical information, which can be able to improve campus net use efficiency and optimize the allocation of campus network information resources.

Research and Implementation of Experimental Data Analysis System for Solar Energy

LIU Kun

2012, 1(1): 191-193. doi:10.3969/j.issn.1006-2475.2012.01.050

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This paper firstly describes design principles of experimental data analysis system for solar energy, then gives a specific system flowchart. According to the system flowchart, the system research contents and the key technologies to be solved are studied. The paper achieves system solutions based on mature computer software technology.

Web Service Based on Spring JavaBean

MENG Qiong

2012, 1(1): 194-195,. doi:10.3969/j.issn.1006-2475.2012.01.051

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Spring is the use of more lightweight framework, Axis2 is the next generation of Apache Axis1.X, with more flexible and scalable architecture. Combination of the Spring and Axis2 can be released in Spring loaded into the JavaBean Web Service services.

Research and Implementation of Data Query Based on Hibernate JPA and JQuery Framework

TAN Ying-yu

2012, 1(1): 196-198. doi:10.3969/j.issn.1006-2475.2012.01.052

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This article researches the base theory of Hibernate JPA query framework, and describes the method and process of data query designed and implemented by JPA and JQuery. In addition, the article summarizes the characteristics and advantages of data query based on Hibernate JPA query framework.

Design of Automatic Grading System for Standardized Examination Papers by Excel

LI Hua;ZHANG Wei-na

2012, 1(1): 199-202,. doi:10.3969/j.issn.1006-2475.2012.01.053

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In the daily teaching process, many kinds of tests and examinations are indispensable, so grading efficiently is important for reducing teacher’s workload. Professional paperless examination system not only needs invest more resources, but also not suits our own all teaching needs. Based on the need of general grading standardized paper and using Excel features of data processing, data management and data security etc, this paper designs standardized paperless examination template. And using Excel as a development platform, automatic grading system of standard examination paper is implemented by VBA langue. Automatic grading system not only improves teachers’ work efficiency, but also reduces the workload of teachers obviously. As the system is simple, safe and efficient, there are important practical values in teaching applications.

Research and Implementation of Browser for IPTV STB Based on Embedded Linux

WANG Jing

2012, 1(1): 203-206. doi:10.3969/j.issn.1006-2475.2012.01.054

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With the continuous development of Internet technology and increasing popularity of Internet technology application, network television is quietly rising, and may be instead of existing broadcast TV. This paper analyzes network television and IPTV set-top box browser technology in detail, proposes embedded browser based on Webkit, and describes its work flow and design steps. The experimental results show that the embedded browser supports multiwindow opening page links, Chinese display, picture rendering speed, at the same time, Webkit provides history page caching, as well as backward, forward, historical display and so on.

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