Computer and Modernization

A New Kind of Particle Swarm Optimization Algorithm

ZHANG Yan

2011, 194(10): 1-3. doi:

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The particle swarm optimization algorithm is a kind of intelligent optimization algorithm. This algorithm has some demerits, such as relapsing into local optima, slow convergence velocity and low convergence precision in the late evolutionary. A new algorithm, based on the new update equations, is proposed to overcome the demerits of the basic particle swarm optimization. Six benchmark functions are tested and the experimental results show that the new algorithm not only significantly speeds up the convergence, but also effectively solves the premature convergence problem.

Research on Control Algorithm of Microquadrotor Aircraft

GAO Yingjie;CHEN Dingxin;LI Rongming

2011, 194(10): 4-7. doi:

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The dynamic mode of a microquadrotor is considered and deducted according to the Newton’s law of mechanics and Euler equation, so the dynamic model of the microquadrotor is built. According to the dynamic model of the microquadrotor, a control system is devised. The whole control system is separated into two parts, namely the inner loop controlangular rotations control) by the Expert PID and the out loop controltranslational position control)by the classic PID, and designs each of them respectively. The simulation results show that with this control method, the quadrotor can reach the target position accurately and keep its stabilization when hovering.

Fuzzy Multiple Attribute Decision Making for Evaluating Weapon  Systems Based on Vector Projection

ZHAO Jihua;HUANG Wensheng;TANG Zhendong;SHEN Bin

2011, 194(10): 8-10. doi:

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The performance evaluation of weapon systems is multiple attribute decisionmaking problems. The descriptions and judgments on weapon systems are usually linguistic and fuzzy. To overcome these problems, from specification data of weapon systems and the opinions of many experts, this paper builds a judgment criterion for weapon systems and fuzzy function based on the method of fuzzy multiple attribute decision making. First of all, the weighted alternative vector is projected onto the ideal solution space, and then the negative ideal solution is also projected onto the alternative vector. On the basis of the two vector projections, a relative closeness degree of alternative and ideal solution is defined to rank all the decision alternatives. An example of evaluating the performance of mortar is given for demonstration.

Optimized Collocation of Airborne Ammunition Support Personnel Based on Genetic Algorithm

LV Xiaofeng;LI Baogang;ZHOU Yuzhu

2011, 194(10): 11-14. doi:

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Rational efficient collocation of personnel in the task of supporting airborne ammunition belongs to optimization problem based on many constraints. On the base of establishing the model of support personnel collocation, genetic algorithm is used to solve the model by describing it logically with the operation factors and the number of support personnel, and the most optimized collocation scheme are received. Simulation result of an example shows that the model is correct and the algorithm is efficient.

Promotion Prediction Model on Teachers Professional Title in University with System Dynamics 

YUE Kuizhi;ZHANG Li;SHI Jianguo

2011, 194(10): 15-18. doi:

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The paper builds the stock and flow diagrams about every element of impacting teachers promotion on the basis of aging chains and auxiliary flow line theory, establishes the prediction model with 4step delay for teachers promotion in university to predict the professional title trend for teachers in university, and simulates with system dynamics software Vensim PLE 5.9. The simulation result shows that the model can predict the professional title promotion trend for university teachers and provide theoretical evidence and technical support for making occupational planning for teachers in university. 

An Automatic Model Selection Method for Support Vector Regression

LI Xuesi;BI Yangang;YANG Hongqiao;WU Fei

2011, 194(10): 19-23. doi:

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To solve the problem of the SVR(Support Vector Regression) automatic model selection, this paper presents an optimal approach based on a gradient descent algorithm for model parameters of a support vector machine for regression. This paper gets the local optimal model parameter by minimizing the model selection criteria R2w2 using a gradient descent algorithm over the set of parameters. Based on the Riemannian geometry, a conformal transformation suitable for SVR is proposed and kernel function is modified in a datadependent way. The general ability is further enhanced as a result. Simulated results show that the approach is very effective.

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An Improved Multifactor Semantic Similarity Calculation 

DANG Liqiong;LIU Wenhui

2011, 194(10): 24-26. doi:

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Semantic similarity computation is a key issue of computer in natural language processing, while it is clearly not reasonable when only considering the single factor of distance. By analyzing the concept of network depth and density factors on the impact of similarity calculation, an improved similarity measure of multiple factors is proposed. Experimental results show that the concept of network according to the distribution node to adjust the ratio of each factor, which makes the results of similarity calculations more reasonable and judgmental.

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Design and Implementation of Indoor Location Scheme by RSSI Trilateration 

LIU Yuhong;YU Bin

2011, 194(10): 27-30. doi:

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A novel method is proposed to integrate the ratio of distance from the difference of APs RSSI with trilateration by changing the layout of APs, which can reduce much work to build matching database, also can deploy rapidly in a new environment. It can enhance the accuracy and save cost. 

Application of Improved Spectral Subtraction Method to Speech Enhancement

HUANG Yajuan;ZHENG Lin

2011, 194(10): 31-33. doi:

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In order to remove noise from a speech and improve the speech quality, this paper presents an improved spectral subtraction method. The method first dynamically adjusts spectral subtraction coefficient according to the power spectrum of each speech frame, then transforms all kinds of noises to the noises similar to white noise by Weiner filter, and finally removes the noises by the traditional spectral subtraction method. Experimental results demonstrate that the proposed method is much effective on removing noise.

Spares Consumption Quota Model Based on Gray Prediction

GUO Feng;YI Yaoyue;SHI Yumin

2011, 194(10): 34-36. doi:

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Spares have many kinds and complex specifications, its prediction is difficult, for the problem, the paper uses the GM (1,1) model of the gray system theory, based on the spares consumption data of years to determine their prediction model. The example shows that this model is of greater accuracy and usefulness. 

Application of CDP in Data Disastertolerant System

XI Liya;GU Bing

2011, 194(10): 37-39. doi:

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Since the important of data in critical system continues to be improved, reconery point objective and recovery time objective in traditional data disastertolerant system cannot meet the requirement of continuing protection for critical data. The thesis describes how to apply the CDP technology to build the data disastertolerant system with continuous data protection and overall data recovery.

Toll Management of Campus Network Based on 802.1X〖ST〗

XIAO Yumei

2011, 194(10): 40-42. doi:

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The paper describes the architecture of 802.1X technology and how it works, makes broadband access system based on 802.1Xcertified, according to the advantage of this framework, details the characteristics of the toll based on 802.1X technology and concludes the weakness.

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Error Eliminating Model for Software Project Management 

LIU Zhenghuang;GUO Kaizhong;YANG Meiling

2011, 194(10): 43-47. doi:

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This paper discusses the use of cuttingedge theory—“Error Eliminating” in software project management. By establishing an error eliminating model and using the method of eliminating error—“Fifteen, Six, Three”, the paper analyzes the causes and mechanisms of errors in software project management. So it provides a new theory and method for studying and founding the law of errors in software project management, and also provides references for software project management practice. 

Modeling Process of Book Management System Based on UML 

ZHU Cheng

2011, 194(10): 48-50. doi:

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UML is a kind of modeling language which replaces a lot of analysis and design methods. It has been recognized as standard modeling language and also plays an important role in the development of software and other fields. UML supports the whole process from demand analysis, system design to software development. This paper introduces the basic concept and modeling process of UML through analyzing the book management system. So that, it turns out the practical applications.

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Study on Construction of Threedimensional Scene Based on SketchUp and ArcGIS

SHEN Jingxiang;KUANG Mingsheng;YANG Kun

2011, 194(10): 51-53. doi:

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Threedimensional visualization is one of new trend of GIS research. This paper proposes a method to construct threedimensional scene, and introduces the process and steps in detail.

Study on Technology of Using Videos in Virtual Environment Based on Virtools

QIU Yinguo;SUN Jiuyun;XU Xiaofang;WEI Meng

2011, 194(10): 54-56. doi:

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In response to the situation that the traditional VR systems pay little attention to the technology of using videos in virtual environment, this paper elaborates the core technology of achieving the function by the design of script flow diagram, taking the situation of switching two videos as example, based on Virtools 4.0 and MAYA 2008. Finally, this article proves the feasibility of the method mentioned by achieving the function of applying videos freely in VR environment. Taking actual 3D models and videos as example, script is designed.

An Autoadaptive Filtering Algorithm of License Plate Location in Low Illumination Condition

TANG Zhiwei

2011, 194(10): 57-62. doi:

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This paper presents an autoadaptive filtering algorithm of license plate location in low illumination condition, the method first devises an improved × shape adaptive window median filter algorithm for gray image plate median filtering to filter noise. Followed by Sobel edge detector for edge detection of plate; then transfers the results of Sobel convolution operator with the Otsu method and the method based on fuzzy theory seeking image presegment threshold. Then the image is divided into target and background, and the paper uses fuzzy partition method transfering final segmentation threshold into binary edge map, then morphological closing operation is used to form a number of closed area. Finally this paper introduces one kind of search labeled connected component analysis method to remove the region which does not meet the license plate features, and thus to promote the accuracy of license plate location in the low illumination condition.

A Mosaic Detection Algorithm of Video Image Based on Grid Expansion

NING Fangmei;YE Feng

2011, 194(10): 63-65. doi:

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This paper presents a mosaic detection algorithm of video image based on grid expansion. The algorithm traverses the image pixels with the way of gridbased expansion, and quickly finds the rectangular area with similar pixels in image, which is the mosaic. The result shows that this algorithm is of high efficiency while ensuring a high accuracy, meeting the functional and performance requirements of mosaic detection of video image.

A Recognition Method of Abnormal Patterns for Video Surveillance in Substation Environment

JING Meili

2011, 194(10): 66-69. doi:

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:With the improvement of substation automatic level, video surveillance systems are widely used in substations. In order to improve the intelligent level of monitoring and timely detect abnormalities, an identification method of abnormal patterns of surveillance video in unmanned substation environment is proposed. Object classification is implemented in substation environment video surveillance (related to people, animals, ordinary flames (red and yellow flames), white flames, and so on). Then people are tracked and the trajectory is depicted. Multiple features are extracted for classified objects. Hierarchical classifier structure is generated from the confusion matrix. Support vector machine (SVM) is used as the basic binary classifier. Experiment of using actual video data is implemented. Experimental results show that the proposed method can get a better recognition for people, animals and flame, track people and eliminate interferences such as the impact of incandescent lamps. It can provide the necessary conditions for fire alarm and steal precaution in unattended substation.

Effective Area Detection Algorithm of Laser Spot

LIU Kun;JIANG Zhiping;FANG Haitao

2011, 194(10): 70-73. doi:

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With increasingly sophisticated laser applications in industry and science, characterizing the intensity distribution of the laser beam has become a more and more important task. It’s necessary to separate the main effective area in laser spot. The spot should be fixed on a regular area. In general, the laser spot is almost circular, so the processing method by the concept of “circle” is a reasonable option. Hough Transform (HT) has long been known to be an efficient technique for detecting a line and a circle in digital image processing. To locate a circular area by HT, the edge of the laser spot should be checked at first by Canny edgedetection method. The paper proposes an algorithm for laser spot area location. Based on the image data of a laser spot, Canny edge detection and the Hough Transform are used in this method. Finally, the experimental results show that the approach can separate the principal effective area in a real laser beam efficiently.

Label Detection Technology Based on CIE LAB 

CHEN Futing;WANG Renhuang

2011, 194(10): 74-75. doi:

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An approach of detecting whether badminton label is qualified in CIE LAB model is presented. It turns image data from RGB model to CIE LAB model, because of the different colors between the ball’s head and a variety of labels, then calculates color using A, B variables. And comparing the threshold set, the area which is not posted is calculated to judge whether label is qualified. The approach is effective in label automatic detection. 

Multifocus Image Fusion Using Waveletbased All Phase Directional Filter Bank Transform

LI Yan;LIU Bin

2011, 194(10): 76-80. doi:

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Using multidirection and shiftinvariance characteristics of all phase directional filter bank, an multifocus image fusion algorithm using waveletbased all phase directional filter bank transform is proposed. First the waveletbased all phase directional filter bank transformation to the different focusing image is made, then the weighted averaging operator is used to carry on the fusion to the low frequency coefficient, the local variance criterion is used to carry on the fusion to each direction high frequency coefficient. Finally, to reconstruct the coefficient of fusion, the fusion image in which the high and low frequency proportion elevates is obtained. The experiment results show that, the method significantly reduces the RMSE value, improves the PSNR value, and makes that the fused image is of good effect.

Implementation of Character Animation via BVH in OGRE

DONG Huailin;XU Tianmao;WU Qinfeng

2011, 194(10): 81-83. doi:

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OGRE is a popular opensource 3D graphic rendering engine. To improve the efficiency of implementing character animation, standard BVH files should be exploited to reduce the workload of intermediate transformation. The structure functions of the BVH files is used to parse the animation data and the parsed data, which is loaded directly to the memory, and then realtime rendering is implemented in OGRE engine. The experiment results demonstrate that parsed BVH files can successfully drive the model, obtaining vivid and brilliant 3D rendering effect.

Design and Realization of Network Charging System Based on Gateway

XU Yuedeng

2011, 194(10): 84-87. doi:

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Internet develops quickly, so how to charge the Internet’s use becomes more and more important. The design goal and the architecture of the network charging system are determined. The gateway server is implemented by using Netfilter model in Linux. Multithread technology which separates the chargingdata gathering process and the expensecalculating process is used. This technique improves the performance of the gateway.

Research on Model for PeertoPeer Networks Trust

CHEN Qian;SONG Junjie

2011, 194(10): 88-92. doi:

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The PeertoPeer networks are growing. The issues of trust in the system are resolved by establishment of a reliable trust management model. An overview of P2P networks and their security problems is introduced, then the existing typical P2P network trust models are analyzed and classified, at last, the unresolved topics and development trends in this field are discussed.

Magnet URI Based on DHT Network and PEX Technology

HU Wei;ZHONG Weilian

2011, 194(10): 93-95. doi:

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The traditional BT tracker download as server has come to end, magnetic download based on the DHT network and PEX technology has become a new generation of BT download. This article focuses on a new generation of P2P technology.

Design of Improved Trusted Network Connection Model and Its Protocol Based on Network Coding

ZHANG Bo;ZHANG Tao;LIN Weimin

2011, 194(10): 96-100. doi:

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Trusted Network Connection (TNC) model is applied to ensure the security of network access, and with its deeper research and application, the security of TNC model is very important. First, the paper analyzes the traditional TNC model and its procedure, and finds that there is security risk in the traditional TNC model because of the lack of security in its underlying transport protocol. Then, in order to solve the security risk, the paper designs TNC model and its protocol based on network coding, and improves the trustworthy of network without decreasing the efficiency of data transporting, improves the trustworthy of TNC model.

Design and Implementation of Crossplatform and SOAbased  Electronic Medical Records Reading System for iPad

WU Yuanli;YANG Hongqiao;WU Fei;LI Xuesi

2011, 194(10): 106-109. doi:

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To meet access requirements to electronic medical records on iPad and other mobile terminals, this paper proposes an electronic medical records reading system based on Web Service, using serviceoriented architecture and XML(Extensible Markup Language) technology, which aims at good interoperability and crossplatform ability. The electronic medical records reading system integrates No.1 Military Medical Project and EMR (Electronic Medical Record) system seamlessly, provides crossplatform access mode to EMR system on iPad. Doctors can get access to clinical diagnosis information of patient on the bedside through wireless network with iPad; benefits are significant since the platform is put into use. 

Application of Wireless Sensor Networks in Elevator 

XU Jianguo;

2011, 194(10): 110-112. doi:

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With the increase of highrise buildings in people life, elevator has become increasingly important. Only depending on the work of professional maintenance company cannot immediately reflect the elevator running conditions. Moreover, the elevator malfunction cannot be timely reported to the relevant staff to save the trapped people. With the development of electronic technology, communication technology and computer technology, Wireless Sensor Network (WSN) has become a hotspot of scientific research and industry application. Based on the random distribution of WSN, for dynamic network, low cost, high reliability, this research focuses on designing Wireless Sensor Network (WSN) to effectively monitor the operation of elevator parts, and gives timely control instruction, according to the formulated strategies, to guarantee the safe and stable operation of the elevator. 

Personality Call Strategy Based on SIP Signaling

LIU Jun;YANG Lei;;BAO Yuma

2011, 194(10): 113-115. doi:

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Along with the development of communication technology, how to better provide service for customers with onetoone has become one of the goals of enterprises. The traditional ACD strategy obviously does not meet onetoone advocacy service business purposes. This paper proposes a SIPbased personalized services to meet the corporate call strategy model that combines the company’s Customer Relationship Management (CRM) system and communications systems. According to the difference of customer’s caller number, referencing to the original customer information, the system can dynamically decide to call the agent and change the agent’s priority.

Research on Civil Aviation Information Push System Based on Agent

LI Zhifang;LI Yagang;ZHAO Hongqi

2011, 194(10): 116-119. doi:

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Recently, with the development of civil aviation, a great mass of data is growing fast. According to the need of users in personal information service, this paper introduces a model of information push system based on multiagent. By this mean, the intelligentized method of getting information is proposed. Several key technology problems of system implementation, such as the building of users interest model and information filtering, are solved.

Research on Wireless Sensor Networks Channel in Underwater

GU Xiangping;JIN Ying

2011, 194(10): 120-122. doi:

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Underwater wireless sensor networks is a high environment noise, large transmission delay, high bit error rate, multipath propagation, Doppler effect, timefrequencyspace stochastic channel. The complexity and variability of an underwater acoustic channel severely limit the performance of underwater acoustic communication. Using Matlab, the paper analyzes the influence of these factors on the underwater wireless sensor network communication performance, and provides a reference basis for designing feasible channel model of underwater wireless sensor networks, underwater reasonable topology and lowpower, highperformance routing protocol.

Design and Implementation of Interface Between Full Business Pretreatment System and iTV Management Platform

WANG Jun;LIN Zhongda

2011, 194(10): 123-125. doi:

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Based on practice, in order to achieve full service telecommunications pretreatment system in the handling of complaints against iTV users, an interface between .Netbased iTV pretreatment system and UTiTV management platform is designed and implemented. The main functions include batch download the error log data from iTV management platform, and transform the log data into the iTV pretreatment system data specification, the article introduces the main ideas and technical methods.

Study and Development of Examination Management Information System Based on SSH Framework

JIA Yanli;LIU Yan

2011, 194(10): 126-128. doi:

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Carrying out quality projects in higher schools and the tension of teaching resources make examination arrangement of Nanyang Institute of Technology extremely difficult. In order to improve the quality of teaching and examination management level, combining of needs analysis and database design of schools, this essay uses SSH (Struts2+Spring+Hibernate) framework to build a test management platform, enabling the user interface, business process and data access phase to separate, making resources to achieve data integration, exam scheduling, query retrieval, reporting and statistics, to meet the needs of test management and automation of examination arrangements, and builds up a good basis for comprehensive educational administration management model under the credit system.

Node Deploying of Red Bay Warning Monitoring System Based on Wireless Sensor Network

LIANG Yanzhao

2011, 194(10): 129-131. doi:

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In order to develop and make good use of Shanwei Red Bay, the paper designs a wireless sensor network, which is a practical and warning monitoring environment system. It focuses on developing a strategy to deploy wireless sensor nodes which monitor the environment in seas. In this network, two kinds of nodes are deployed, one is more powerful energyefficient sensor nodes, another is less energy node. The former introduces a virtual force algorithm to optimal deployment. The algorithm is of strong ability of global optimization, and improves the fraction of the network coverage, optimizes the network performance. 

Application of Wavelet Adaptive Filter in DCG Denoising

JIANG Fengru

2011, 194(10): 132-134. doi:

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A new adaptive filter based on wavelet transform is designed. First, the original signal is decomposed by wavelet transform and the wavelet coefficients with main noises are canceled. Second, the reconstruction signal is selected as the original input of the adaptive filter and the wavelet coefficients with main noises are selected as the reference input of the adaptive filter. The experimental results show that this method is of bigger SNR and satisfied denoising result. Finally, less computation of the method is very suitable for computing DCG signal with large amounts of data. 

Courseware Design for Using Multimedia Teaching Equipment

WANG Qin;HOU Xiaofeng 

2011, 194(10): 135-137. doi:

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:There are various types of multimedia teaching system equipments in universities. Because teachers are unfamiliar with the multimedia teaching system functions and operations, they often have trouble in the teaching processes. They often fail to operate the multimedia equipment, thus affecting the normal teaching work. In order to train teachers to master the skills of using multimedia teaching system equipments, operate multimedia teaching facilities efficiently, and serve modern teaching, the multimedia equipment courseware is designed by PPT software.

Research on Development of Stored Procedures in Oracle DB

GU Yunfeng;YANG Suxia;WANG Zhigang;ZAI Ping

2011, 194(10): 138-142. doi:

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The stored procedure should be used in any well designed database. Oracle database takes it as a database object. Since Oracle 8i, not only the original PL/SQL language can be used in the development of stored procedure, but also Java language can be used. Taking the latest Oracle edition as an example, this paper describes the concept, classification and its advantage of stored procedure， elaborates the developing process of it in detail through some solid examples, analyzes the merits and shortcomings of different developing languages, and puts forward some developing suggestions in the end.

Research and Application of Wireless Dynamic Ranging System for Vehicle Anticollision

WANG Xiaoli

2011, 194(10): 143-145. doi:

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In order to solve effectively the problem of dynamic distancemeasuring on moving vehicle, this paper discusses the general design scheme based on dynamic distancemeasuring system for moving vehicle. This paper uses ultrasonic wave propagation reflex obstacles principle in the air, and ultrasonic probe as interface unit, AT89S8252 singlechip microcomputer as core to calculate the ultrasonic transmission time in the air, and convert it to the corresponding distance to realize dynamic ranging. Through hardware design, it can realize realtime display for the distance between the car and the adjacent car. It can realize sound and light alarm if the distance is too close. After the software programming and simulation, the results show that hardware and software design of the system is reasonable, antijamming ability is powerful, realtime performance is good, and it is of high precision. Through expansion and promotion, the system can be widely used in different ranging occasions with its high ratio of performance and cost. 

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Improvement for Confidence Measure in Command Word Speech Recognition System

MA Hongxing;WANG Haikun;LIU Cong

2011, 194(10): 146-149. doi:

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Confidence Measure (CM) plays an important role in speech recognition system, which serves as a postprocessing module to detect recognition error and reject outofvocabulary (OOV) words, based on the recognition results and corresponding information. This paper presents two methods to improve the performance of CM in constrained command word speech recognition system. The first one is phone dependent score normalization based on Gaussian Mixture Model (GMM). And in the other method, some durationbased features are introduced to complement the traditional CM features. The experiments on Mandarin and English databases show that both methods can achieve significantly improvement in CM performance, comparing to the baseline CM system. Furthermore, these two methods can complement each other in performance.

Courses Evaluation and Management Approach Oriented to Teaching Process

OU Wei;JIAO Liping

2011, 194(10): 150-152. doi:

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Taking accuracy and impersonal evaluation to collective lesson planning, teaching planning measurement, and grade analysis etc, is not only the demand of course evaluation, but also a scientific way for standardizing the teaching actions and improving the teaching efficiency. The evaluation system of organizing and implementing teaching activities is studied, an evaluation method of integrating timeliness assessment and quality assessment, qualitative analysis and ration calculation is proposed. Lastly, an instance is analyzed to bring forth the evaluation process, whereas the impersonality and rationality are demonstrated. 

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Realization of Word Operation Automatic Grading Key Technology

WANG DUxiang

2011, 194(10): 153-155. doi:

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In order to complete the grading of Word operation, through using VB technology access and controlling Word document page properties， floating object, paragraphs, font styles, forms, etc， the paper realizes a correct judgment to complete the required operation setting. For each type of judgment, a detailed program code is given, and thus the automatic marking job is realized.

Research on Navy Weapons Security Metadata Building Method Based on Ontology

LAN Tian;WANG Wenshuang;CHENG Jihong

2011, 194(10): 156-159. doi:

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This article, combining ontology with metadata, researches the navy weapons security metadata model building method based on ontology, this method can be used to organize, edit and inquire the naval ordnance security metadata fields information, can describe the related concepts and relations between concepts knowledge of navy ordnance safeguard field, improve the discovery ability of naval ordnance security data resource. 

Research on Mobile Tax System Based on Intelligent Terminal

WANG Yunfeng

2011, 194(10): 160-162. doi:

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Implementing mobile OA in mobile internet age has become focus on tax information. Combining the development of mobile OA with tax information, this paper discusses the idea on how to construct the mobile tax project using mobile information technology based on intelligent terminal of 3G network.

Research on Total Throughput and Total Hits in Performance Testing

HUANG Zhen;LIU Tao

2011, 194(10): 163-165. doi:

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Performance testing is an important part of software testing. The performance can be well analyzed by using LoadRunner, but the analysis of performance testing results is a very difficult work. This paper analyzes the two important targets:total throughput and total hits in the performance testing, thus how to analyze the test results in depth can be understanded.

Design and Achievement of Integrated Position System for Mobile Robot TYIRVI

ZHAO Min;LI Yang;;GAO Meng

2011, 194(10): 166-168. doi:

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Position System is the necessary condition for navigation and avoiding obstacle, only when position is correct that can prevent barrier exactly and navigate. Therefore, position system is the essential part. This paper describes the position system of TYIRVI, which consists of GPS, magnetic compass and optical encoders. GPS can provide precise absolute position, but the signals of GPS can be interrupted by obstruction. The CompassEncoder Position System computes the position using dead reckoning, which has a good performance in short distance, but problem exists due to accumulated error over long distance. With the integration of GPS and CompassEncoder Position System, the system may achieve the advantages of both without many of the limitations of either. The system is tested on TYIRVI and demonstrated its good performance.

A Software Framework for Filtering Pornographic Web Images

LI Ye;TENG Guoku

2011, 194(10): 169-171. doi:

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In order to prevent the Web browser from visiting Web pages and Web sites which contain pornographic images， a software framework on Windows client for filtering pornographic Web images is designed．The framework is based on Layered Service Provider of Winsock 2, and it is valid for both IEkernelbased browsers and nonIEkernelbased browsers, overcoming the defect of BHObased software which is merely valid for IEkernelbased browsers. Testing result shows that the software can filter pornographic Web images effectively. The framework is of reference value for the development of similar software．

Reseach on Method of Electronic and Information Equipment  Against Lightning Electromagnetic Pulse 

FU Fang;GUO Jian

2011, 194(10): 172-174. doi:

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The hazards of lightning electromagnetic pulse on electronic and information equipment is introduced, and the cause is analyzed. On the basis of the principle of electromagnetic shielding, the magnetic field strength of the lightning strikes in different regions is analyzed, copper and aluminum mesh grille is made for protection. Finally the protective effect is analyzed.

Research on Designing Automatic Marking System for Visual Basic Programming Examination

BEN Liming

2011, 194(10): 175-176. doi:

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Visual Basic is one of the best visual programming language in Windows environment. Today, it occupies a relatively important role in teaching about programming languages. This paper analyzes the method of automatic marking system for VB programming examination, proposes use of a combination of dynamic and static methods, and this method is of good stability and reliability, it can be automatically handle endless loop and other errors in examinee’s program.

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Safe SQL Queries Generated by Relational Algebra Based on C++  Language

GU Kunpeng;SONG Shunlin

2011, 194(10): 177-180. doi:

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When developing applications based on a database with C++, the SQL queries are not necessarily checked for correctness at compiletime but only at runtime. The paper studies on using C++ compiler to check the relational algebra, which generates correct SQL queries, that brings forward some part of runtime work to be done at compiletime.

Design and Implementation of Electronic Document MIS

LI Weiling;GUO Feng;ZHANG Zuogang;ZHANG Suqin

2011, 194(10): 181-182. doi:

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Based on the C# technique and the Access database， this paper analyses the system requirement and database frame of electronic document MIS， then explains the implementation technique.

Research on Header Files Nested Relationship Based on Veriong HDL to SystemC

WANG Lei;LIAO Fan;JI Hongyang

2011, 194(10): 183-186. doi:

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With the rapid development of large scale integrated circuits, hardware and software codesign and verification techniques become increasingly important. Hardware language Verilog HDL and software language SystemC problems of the compiler switches have become popular. This paper studies the equivalent SystemC header files generated nested relations in semantics of Verilog HDL to SystemC compiler transformation. First the problem model is proposed, then the algorithm which constructed the dependency tree is used to solve the problem, and finally a reasonable result is get.

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Implementation of Fourchannel USB Data Acquisition Card Based on C8051F320 SCM

LI Shaoqing;ZENG Di;CHEN Lulu;LIU Changchun;YU Hang

2011, 194(10): 187-188. doi:

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The paper introduces how to design a complete USB data acquisition system by the SPI bus and the specific transfer function of USB supported by the C8051F32X MCU, describes two chips, and how to communicate between the acquisition card and the host machine through the LabVIEW, as well as the details to implement.

Design and Realization of IT Consulting Services Support Platform

SONG Lihua;;ZHANG Jiancheng;;GUO Rui;;ZHENG Leilei;;TAN Wenjing;

2011, 194(10): 189-192. doi:

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The paper develops a support system for IT consulting service to promote the service more standardization. Understanding the development status of information system project surveillance, basing on the goal and task of building, the paper introduces the design concept and basis of the platform, proposes the main functions of the platform by describing of the system, designs and realizes the resources library and documentation system, describes the specific features and the type of users. The IT consulting services support platform based on the Web2.0 technology and Java programming language is completed. A set of professional business management system for information system surveillance enterprise and information project is provided, and the platform can further promote IT service industry.

A Method of Performance Analysis for Loader in Virtual Machine Based on Petrinet

JIAO Jian;XIAO Qing;WANG Chao

2011, 194(10): 193-195. doi:

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Virtual machine has been widely applied in computer security. The loader scheme can make different affection on VM running. This paper proposes a method to make the VM model with Petrinet. By this method the model can be formalized for different loader scheme to VM, and the performance can be evaluated. The experiments by CPNtools show that this method can analyze some characters for model and can compare consume for time and space among these schemes effectively.

Application of Network Management Thoughts in Dynamic Spectrum Management

WANG Fan;ZHU Hongxia

2011, 194(10): 196-198. doi:

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The rapid development of wireless communication technology and the rapid increasing demand of wireless communications business fewer and fewer resources make available in the wireless spectrum. In this paper, through the extension of cognitive radio, a way of taking advantage of network management technology to realize spectrum management is put forward. By this way, difficult problems in spectrum management can be solved effectively.

Design and Realization of Lightning Realtime Monitoring and  Warning System Based on MapXtreme

MA Yanjun;LV Shuang;FANG Guoqiang;XIANG Jitao

2011, 194(10): 199-202. doi:

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Based on MapXtreme structure, a realtime monitoring and warning system of lightning based on MapXtreme is constructed.This system achieves realtime monitoring of lightning detection site running and lightning data, queries of historical lightning data, and makes now forecasting warning based on historical lightning data. The system plays an important role in Sichuan province lighting data analysis.

Analysis of Evolution Phases of Network Public Opinion

PAN Chongxia

2011, 194(10): 203-206. doi:

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This paper analyzes the evolution phases of network public opinion that is very important for studying the law of evolution of network public opinion. The evolution of network public opinion is very complicated, so it is very difficult to decide how many phases of evolution of network public opinion should be divided. For the convenience of study, the paper presents the evolution of network public opinion by three phases: the initial spreading phase, fast diffusing phase and fading phase. And according to these three phases, this paper analyzes the evolution phases of network public opinion. This paper analyzes constitution and influence factors of network public opinion at the beginning, then presents the changes of all the factors during the three phases in detail. This paper tries to give a quantitative analysis of changes in the factors to be useful to study the law of the evolution of network public opinion. 

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