Computer and Modernization

Focused Crawler Based on Improved Algorithm of Web Content Similarity

WEI Jing-jing;YANG Ding-da;LIAO Xiang-wen

2011, 193(9): 1-4. doi:10.3969/j.issn.1006-2475.2011.09.001

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Focused crawler is an important part of the vertical search engine. The Web content relevance algorithm of traditional focused crawler only considers term frequency, ignores the location information of key terms. After the analysis of the focused crawler based on the Web content relevance, this paper proposes an improved method of calculating relevance using the features of HTML tags. Experimental results show that the average accuracy of improved algorithm is 64.99% and increases 15.37% compared to the original method.

Application of Improved PSO in TSP

MA Xiao-hui;WANG Hong;

2011, 193(9): 5-7,11. doi:10.3969/j.issn.1006-2475.2011.09.002

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The particle swarm optimization algorithm is proposed by Eberhart and Kennedy, thoughts of the algorithm is simple and easy to achieve by programming, so it attracts many scholars’ attention in related areas. The traveling salesman problem as an example, a discrete particle swarm optimization is proposed. The particle’s position, velocity and the operation rules are defined again. Velocity is added the shrinkage factor in the iteration process. The results show that the algorithm is of better performance.

A Low Complexity Sub-optimal Automatic Sphere Decoding Algorithm

LI Qing-hui

2011, 193(9): 8-11. doi:10.3969/j.issn.1006-2475.2011.09.003

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A low complexity sub-optimal Automatic Sphere Decoding (ASD) algorithm is proposed. Aiming at the large size of the border node list in conventional ASD, the proposed method decreases the complexity of decoding efficiently through fixing the size of the border node list; and compensates the corresponding Fanolike metric bias which gets from simulation to assure the performance. It verifies the new algorithm through the simulation. And the simulation’s results demonstrate that compared with the conventional ASD, the complexity of decoding reduces greatly at the cost of less penalty on the performance, and it adapts for hardware implementation well.

Image Compression Algorithm Based on Lifting Wavelet Transform and EZW Encoding

LIU Jing;LI Dong-hui;WU Yong-hong

2011, 193(9): 12-14,1. doi:10.3969/j.issn.1006-2475.2011.09.004

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The method of embedded zero tree wavelet code(EZW) is one kind of effective image coding method. The research for the zero tree method finds too many zero trees root in the output code of EZW and the high time complexity of the original EZW encoding algorithm. To reduce the number of bits for zero tree root, a fixed RLC is proposed to encode the continuous zero trees. In this algorithm the lifting wavelet is employed to reduce the time complexity of EZW. Experiment result shows that the proposed algorithm can improve the image compression ratio and the coding efficiency comparing with the traditional EZW algorithm.

Research on Maximum Entropy Reliability Evaluation for Missile System Based on Genetic Algorithm

XU Ting-xue;DONG Qi;ZHANG Yong-liang;ZHANG Xiao-yu

2011, 193(9): 15-18. doi:10.3969/j.issn.1006-2475.2011.09.005

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The reliability evaluation method based on maximum entropy is proposed, for solving the problem of the small sample of missile reliability experiment, and the genetic algorithm theory is used to solve the problem of optimization nonlinear constraints programming. Finally, the method is practical through example demonstrating.

A Novel Packet Scheduling Algorithm for Multi-service Scenarios on HSDPA

LI Yu-ling;DU Hong;FAN Bin-wen

2011, 193(9): 19-21,2. doi:10.3969/j.issn.1006-2475.2011.09.006

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This paper proposes a new packet scheduling algorithm for multi-service scenarios on High Speed Downlink Packet Access (HSDPA). This packet scheduling algorithm consideres both the delay constraint and the fairness for each traffic class while guaranteeing different quality of service (QoS) for each traffic class. The strategy is evaluated in a scenario including steaming and interactive and background traffic. Numerical simulation results show that system performance can be more significantly improves employing this algorithm than that with PF or M-LWDF method.

Study on Reconstruction Algorithm of Temperature Field Based on Simulation of Sound Propagation Path

DU Fu-rui;ZHANG Min;SHI Xu-dong;AN Fu-dong;WANG Qian

2011, 193(9): 22-25. doi:10.3969/j.issn.1006-2475.2011.09.007

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This paper proposes a two-dimensional temperature field reconstruction algorithm which simulates the sound propagation path based on the least-squares algorithm. The algorithm uses the sound deflection principle and considers the bending effect of the sound propagation path, simulates the actual sound propagation path by the interpolation method. The simulation results show that the algorithm can correct the curved sound path automatically and reconstruct the temperature field simultaneously. Comparing with the leastsquares algorithm, this algorithm can significantly improve measurement accuracy.

Grid Resources Scheduling Algorithm Based on Discrete Particle Swarm and Tabu Search

LI Yan-fang;JIANG Xiu-feng

2011, 193(9): 26-29. doi:10.3969/j.issn.1006-2475.2011.09.008

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A grid resource allocation and task scheduling algorithm based on intelligent is proposed, because the grid resources scheduling is a discrete problem, the discrete particle swarm algorithm based on selfadapting inertia is adopted. Aiming at the later of algorithm, the discrete particle swarm algorithm is easy to fall in local optimum, it is combined with tabu search algorithm. At prophase, the discrete particle swarm algorithm is presented, in the late tabu search algorithm is using to local search. And by using the grid simulation tools Gridsim Toolkit, a grid simulation system for experiments is developed. Experimental results show that the algorithm is of higher optimization ability.

Eliminate Algorithm of Vehicle Shadow

CHEN Wen-jie;WANG Ming-yan

2011, 193(9): 30-32. doi:10.3969/j.issn.1006-2475.2011.09.009

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This article discusses a new eliminate algorithm of vehicle shadow. That is combination of the vehicle shadow characteristics and geometric model. And it is realized by OPENCV and VC 6.0 platforms. The algorithm bases on the analysis of the characteristics of vehicle shadow, and combines the shadow geometric model, transforms the coordinate of the relevant pixels, according the direction of driveway line which has been extracted, finds the critical of vehicle and shadow in the new coordinate, and then eliminates the shadow and transforms back to the original coordinate. Experimental results show that the effect of this method of vehicle shadow remove is very good.

Intrusion Detection Algorithm Based on Hybrid Gene Expression Programming

DENG Song;LIN Wei-min;ZHANG Tao;

2011, 193(9): 33-35,3. doi:10.3969/j.issn.1006-2475.2011.09.010

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This paper proposes Intrusion Detection Based on Hybrid Gene Expression Programming (ID-HGEP), which combines the theory of attribution reduction in rough set to improve precision and efficiency on intrusion detection. Through extensive experiments on high dimension data sets, it is shown that ID-HGEP is apparently more advantageous in terms of convergence speed, intrusion detection efficiency and average consumptive time in contrast with traditional intrusion detection algorithm on GEP.

Design and Development of Personnel Attendance Management System Based on .NET

YANG Yang

2011, 193(9): 36-39. doi:10.3969/j.issn.1006-2475.2011.09.011

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In view of present problems existing in the manual way attendance, this paper proposes a design and development scheme of personnel attendance management system based on .NET, describes the requirements analysis, the whole design and function of personnel attendance management system based on .NET. This system effectively improves work efficiency of the attendance management.

Design and Implementation of Text Search Engine Based on Lucene

ZOU Yan-fei;YU Cheng-zun;ZHAO Liang

2011, 193(9): 40-42,4. doi:10.3969/j.issn.1006-2475.2011.09.012

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With the increase of information of LAN, personalization and lightweight search engine has been concerned and admired. This paper realizes the retrieval of multi-type content using Lucene, JSP, struts2 etc, after studying of the principle of search engine on local area network. Experiment proves that the system can extract and analyze text of HTML, PDF, Word, txt, besides, the system is open, extended, real-time and safe. It achieves the anticipated results successfully.

Design of Smart Home System Based on μIPv6 Protocol Stack

ZHANG Ye-chao

2011, 193(9): 43-45. doi:10.3969/j.issn.1006-2475.2011.09.013

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This paper analyzes and researches the current technology of Internet of things, introduces the μIPv6 protocol stack which is released by Cisco recently, and designs the embedded system which is specialized to use the μIPv6 stack. This system has an extensive application with various situation. The system is the main factor in the Internet of things. This paper designs the smart home network control system which is embedded and wireless network.

Creation of Dynamic Websites Based on Dreamweaver

NING Hui-hua

2011, 193(9): 46-48,5. doi:10.3969/j.issn.1006-2475.2011.09.014

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Many people who learn computer design want to build their own dynamic websites, but in actually programming process, various sorts of errors, and a lot of difficulties are often met. For convenience of people to solve these problems quickly, this paper introduces the configuration of dynamic Web site development environment based on Dreamweaver, the creation of dynamic website and the solutions of some common mistakes.

Hardware of Design pH Value Sensor Node for Water Quality Monitoring Based on Wireless Sensor Network

GU Xiang-ping;HU Rong-lin;ZHU Shun-wu

2011, 193(9): 49-52. doi:10.3969/j.issn.1006-2475.2011.09.015

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In order to meet the requirement of water quality monitoring, the hardware implementation scheme of pH value sensor node based on wireless sensor network is proposed. The design scheme includes four parts: pH value acquisition module, microprocessor module, wireless transceiver module and power module, which can be used to monitor pH value of the lake, river and other different water environment. The hardware modules and software flow are introduced in detail. As a result of wireless transmission, the system solves the difficulties of development, expansion, upgrade of wired communication, which is of low power consumption, low cost, flexible deployment, easy maintenance and other advantages and it is of a broad application prospects.

Application of EPON+EOC in CATV Network Bidirectional Reconstruction

MO Huai-hai;LI Yang;PENG Guang-lin;WANG Qi

2011, 193(9): 53-56. doi:10.3969/j.issn.1006-2475.2011.09.016

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This paper firstly introduces the work principle and main characteristics of EPON and EOC technology, and discusses the CATV network bidirectional reconstruction of the existing HFC network based on EPON+EOC or EPON+LAN. Through a bidirectional reconstruction design examples in commercial district, expounds the design ideas based on EPON+EOC in CATV network bidirectional reconstruction. It can be seen that the EPON+EOC technology can extremely save the investment in the network construction, which is the best choice for residence community and commercial district. It is the suitable network reconstruction solution for integrating telecom, broadcasting and Internet networks in China broadcasting industry.

OHChord: Improvement of Chord Routing Algorithm Based on Optimized Routing Table and Hot Point

WANG De-yong;WANG Xiao-guang;QI Ying-jie;ZHANG Shao-long

2011, 193(9): 57-60. doi:10.3969/j.issn.1006-2475.2011.09.017

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It is a hot issue to study how to locate the resource efficiently in P2P networks and grid computing. Chord is a structured P2P routing protocol based on DHT, with the features of fully distributed, load balancing and availability and so on. But it is of a poor performance because of redundant information in the finger table. In this paper, OHChord is proposed. It reduces redundancy and improves query stability by two methods. Firstly, an improved finger structure is presented for removing redundancy. Secondly, a hot routing table is added for each node. Comparing with the original Chord and partitionbased Chord, OHChord can improve the resource retrieving efficiently.

Design of Intelligent Data Acquisition Terminal Based on ARM Cortex-M3

WANG Jian-hui;LI Zheng-min;LIU Wei-wei

2011, 193(9): 61-64. doi:10.3969/j.issn.1006-2475.2011.09.018

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This paper designs and implements a power intelligent data acquisition terminal based on ARM Cortex-M3 processor core. The software and hardware parts of the intelligent terminal are introduced in detail. This terminal chooses the IAR EWARM as the system development platform. It can shorten the development cycle, and also improve the system stability. Test shows that the system is lower-power, cost-effective, easy to expand functions as well as easy to promote use.

Design and Implementation of Mobile Middleware for Adapting Multi-terminal

XU Hao;ZHOU De-hua;DING Zhuo;SHI Ya-qiang

2011, 193(9): 65-68,7. doi:10.3969/j.issn.1006-2475.2011.09.019

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With the development and application of 3G technology, mobile game, animation, audio or video, etc. become important developing trend of mobile value-added services. There are two common problems in current mobile applications. One is that the diversity of application type increases the complexity of application development; the other is that there is a huge job to make application adapt to various mobile terminals. Based on the ideas of traditional middleware and mobile middleware, this paper proposes the architecture design of mobile middleware for adapting multi-terminal and gives concrete realization of the core components, such as visual development environment, simulated operation engine, application generation engine and cross-equipments support engine. It makes the mobile application development easier and easier. At the same time, it can help mobile application automatically adapt to various types of mobile terminals, solves the key issues for terminal support to popularize mobile applications.

Design of Name Call System Based on Semantic Search

CHEN Xiang-liang;LI Huai-song;LIANG Yi-wen

2011, 193(9): 69-73,7. doi:10.3969/j.issn.1006-2475.2011.09.020

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The rapid development of network and communication technology makes the traditional communication way cannot meet people’s needs. Humanity and intelligence have become almost every communication manufacturer’s goals, but the problem exisiting in only calling by number still has not quite good solution. According to the inconvenience brought by number calls in communication, this paper puts forward a design scheme that utilizes the semantic search to implement the name call system, which makes the communication
simpler and achieves the goal of people first.

Research and Implementation of Interactive Splicing of Fundus Images

DONG Yin-wei;SHEN Jian-xin;WANG Yu-liang

2011, 193(9): 74-77. doi:10.3969/j.issn.1006-2475.2011.09.021

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Fundus images which are gotten by fundus camera are usually used for doctors’ assistant diagnosis. Existing fundus camera can just get local fundus images, however global fundus images are more effective and comprehensive. Automatic fundus image mosaic method is of high precision and intelligent, but still not perfect. In the actual clinical diagnosis, interactive mosaic is more practical, even the pictures which have no overlap can be spliced together. This paper proposes a method of the interactive splicing of funduss images which carry out based on VC++, then it can get the smooth results with clear features. It lays the foundation for the following retinal image processing.

Recognition Method of Container Code Based on Combined Features

GUO Xi-feng;AN Bo-wen;HUI Lin-ru

2011, 193(9): 78-81,8. doi:10.3969/j.issn.1006-2475.2011.09.022

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In order to recognize container code precisely and effectively, a recognition method of container code based on combined features is proposed. After preprocessing the segmented binary image of single character, the character features including hole, concaveconvex, leap, stroke, etc. are extracted. Then the treelike classifier is used to classify and recognize the container code, and combine the validation rules to verify the results. The method doesn’t need complex thinning procedure on the character image, improves the computational speed and avoids the character distortion. Experiment results show that the average recognition rate can reach 93%, and the recognition speed can reach 0.065 second per container code（including 11 characters）.

An Improved Screen-sharing Scheme Applied to Computer Room Teaching

WANG Yan;HUANG Xue-hua;TU Li

2011, 193(9): 82-85. doi:10.3969/j.issn.1006-2475.2011.09.023

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This paper presents an improved screen-sharing scheme applied to computer room teaching. The scheme uses C/S mode. The server is timed to capture screen image and mouse icon, saves them as bitmap data stream, uses GDI+to compress it to JPEG file, then uses the socket to broadcast image data. The client receives the image data, then displays it on the local screen, so screen sharing is implemented. Experimental results show that the server screen reproduced on the client’s screen is clear and smooth, and it can maintain real-time synchronization with the server. The scheme meets practical needs of multi-media teaching in the LAN environment.

Research on Teaching Quality Evaluation of Higher Vocational Colleges 

YUE Shou-chun;DONG Chun-you;ZHANG Li-li

2011, 193(9): 86-90,9. doi:10.3969/j.issn.1006-2475.2011.09.024

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It is the present situation of the teaching quality evaluation in higher vocational colleges, which includes high cost, lack of real time and scientificity, big difference from the reality, and ineffectiveness of utilization of data, that results in incorrectness of teaching quality evaluation and affects the implementation of the overall cultivation goal. The paper puts forward a method combined the cloud model and computer simulating technology based on the relative theory research. The research results are used for teaching quality evaluation in higher vocational colleges to implement the intelligence and automation of evaluating process and to make the evaluation result more scientific, correct, detailed and comprehensive.

Research on Simulation of Freeway Control Strategy

YU Jun-chang;GAN Hong-cheng;YANG Zhen-zhen

2011, 193(9): 91-95. doi:10.3969/j.issn.1006-2475.2011.09.025

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The freeway takes large parts of city’s traffic flow. Good traffic managements and control strategies can ease traffic congestion effectively. This paper uses Visual Basic to develop a simulation program based on macroscopic dynamic network model METANET and ALINEA control model. Then the program is used to simulate a network with two origins and two destinations. The simulation results show that speed of freeway adds about 10 km/h and the capacity of freeway with ALINEA control adds about 150 veh/h. The ALINEA control can relieve traffic congestion effectively.

Design of Health Remote Monitoring Information System Architecture of Buildings

LI Huai-song;CHEN Xiang-liang;LIANG Yi-wen

2011, 193(9): 96-99,1. doi:10.3969/j.issn.1006-2475.2011.09.026

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The increasing building collapses cause serious losses on people’s lives and properties， but today there isn’t a perfect system to monitor the collapsed status of the buildings. So this paper puts forward the health remote monitoring information system of building based on simulation platform and Short Messaging Service (SMS) platform. The simulation platform displays the realtime health status of buildings, when the result of analysis is more than a certain threshold, the SMS platform timely and initiatively distributes the early warning information to the related person, so that the realtime status of buildings can be monitored, and it can achieve the initiatively early warning, timely evacuate and reduce losses. This paper designs the architecture of the system and describes its function modules.

Research on Database Establishment Algorithm of Computer RealizingPaint Dark Color Matching Simulation

WANG Bo;GAO Peng;ZHAO Long

2011, 193(9): 100-104. doi:10.3969/j.issn.1006-2475.2011.09.027

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The paint dark color matching simulation is one of the paint color matching technology difficulties. This paper analyzes the features of database building of dark color matching simulation, the relative paint color parameters describing method is used targeted, a multibase database building algorithm of dark color matching is proposed, and the algorithm is actually verified. The experimentation verifies that the process of database building is simplified, the problem of obtaining inaccurate paint color parameter data by traditional algorithm is solved, and is of important application value to improve the accuracy of the dark color matching simulation.

A Simple Distributed Directorybased Protocol for Simics

ZHENG Zhi-shuo;ZHENG Cun-lu;CAO Hong-xi

2011, 193(9): 105-108. doi:10.3969/j.issn.1006-2475.2011.09.028

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As a fullsystem simulation technology allowing one to completely simulate the functionality of computer systems with different memory hierarchy configurations and different number of processors, Vitutech Simics has an inorder ‘flat’ cache model which only provides with a simple snooping cache coherence protocol support for a simple MESI protocol between caches with a unified shared memory. This limits the number of processors that can be scalable to simulate for the logical bus contention. This paper presents a simple distributed directorybased cache coherence protocol that will solve scalability problem of Simics.

Design of Remote Monitoring System for Fruit Catalytic Housing Based on 〖JZ〗Control of Information Sharing Mechanisms

YI Wen-zhou;LI Zhen-yang;XU Ya-mei

2011, 193(9): 109-111. doi:10.3969/j.issn.1006-2475.2011.09.029

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The control system of traditional fruit catalytic housing can only view the live data remotely, but can not control the equipment on-site remotely, so traditional monitoring system can not keep up with the development. Aimed at this case, this paper designs a unique mechanism to control informationsharing, it is used to combine the monitoring systems of on-the-spot industrial PC with the Web server, not only to satisfy the traditional monitoring needs, but also meet the practical requirements for remote monitoring.

Simple Method of SJA1000 Controller-extending Based on PC

WANG Shao-ju

2011, 193(9): 112-115,. doi:10.3969/j.issn.1006-2475.2011.09.030

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The data bus and address bus in PC/104 is unattached, but in SJA1000, those are time-division multiplexing, the key of expand is how to cooperate the work timing between two computer structures. The paper anatomizes the operation timing of PC/104 and SJA1000, and finishes expand with just with two 47245 and some logic gates.With this expand, only one control sentence can achieve accessing between PC/104 and SJA1000. The method is new and unique， low cost and simple, and has been used in principle prototype of spaceflight optical remote sensor.

Design of Intelligent Traffic Guidance System Based on Virtual Instrument Technology

YANG Guang-nian;YAN Xiao-hong;LIU Yei;YUAN Qi-chuan

2011, 193(9): 116-118,. doi:10.3969/j.issn.1006-2475.2011.09.031

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In order to overcome the difficulties in establishing an accurate data model of mixed traffic flow, a new methed is proposed. This paper mainly takes the single-pointcontrol as the object of study, using industrial control computer and vehicles crossing the detector frontend controller, builds the traffic guidance system. Adjusting period of green time in fixed multi-session and optimization timing plan, the on-line detection of traffic flow at the intersection, which implements the dynamic traffic assignment signal light control.

Research on Scheme of Radio Multi-signature

SUN Xiao-han;LIU Jing

2011, 193(9): 119-121. doi:10.3969/j.issn.1006-2475.2011.09.032

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Based on the difficulties of factorization of large numbers and the problems of quadratic residue in the signature, radio multisignature is constructed. The file which is signed by each signer is sent to the signature collector who will synthesize the final signature. Finally, the final signature can be confirmed by the verifier. The scheme discussed can be against the external attacks and the conspiracy attacks of some signers whose identities can be inferred. But the conspiracy of some signers and the verifier can not be found in time.

Design and Implementation of PKI Security System for Meteorological System

ZHAO Xi-peng;GUO Li

2011, 193(9): 122-125,. doi:10.3969/j.issn.1006-2475.2011.09.033

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With the rapid development of meteorological information, information resource becomes large, it makes some new requirement to information security, but PKI system architecture as network information security architecture will give the way. This paper designs the hierarchical model of the PKI security system for meteorological system, and describes system architecture implementation technology.

Distributed Malware Detection Technology Based on Behavior

YAN Jun-wei;ZHONG Qiu-xi;JIA Xin;WANG Qian

2011, 193(9): 126-129. doi:10.3969/j.issn.1006-2475.2011.09.034

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According to the disadvantages in the malware detection technologies used now, this paper gives a research to the propagation behavior of malware, and extracts its signature. A distributed malware detection method is proposed and a set of experiments are made on NS-2. The result shows that this method can effectively detect the malware.

Research and Design of Network Situation Awareness System Based on Data Warehouse

ZHOU Zheng-yu

2011, 193(9): 130-133. doi:10.3969/j.issn.1006-2475.2011.09.035

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Network situation awareness is a new technology for network management. On the base of analysis on existing network situation awareness model, this paper builds a new conception model and architecture of a network situation awareness system based on data warehouse, analyzes important parts of the system. It establishes the academic base for the realizing of network situation awareness system.

Research on Network Realtime Intrusion Detection Constructure Based on Data Mining

HE Min

2011, 193(9): 134-136. doi:10.3969/j.issn.1006-2475.2011.09.036

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With the development of the technology and scale of network, information security has been become the important problem of people, the real-time module of intrusion detection based on data mining builds a effective mechanism for intrusion detection according to the algorithm of data mining, it is effective for intrusion detection, and it can protect user’s information security.

Design and Implementation of Unix Host Security Audit Software Based on Knowledge Base

ZHU Shi-shun;JIN Qian-qian;LIU Xing;DONG Jue

2011, 193(9): 137-139. doi:10.3969/j.issn.1006-2475.2011.09.037

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Security audit is important for Unix host security, also for business application which running on Unix host. The paper analyzes configuration security of Unix operating system, according disadvantages of conventional audit method, a Unix host configuration security audit scheme based on knowledge base is proposed. Then the paper gives the implementation of the scheme.

Research and Design of Network Accessing Behavior Analysis Model

PAN Lei;ZHU Hong-xia

2011, 193(9): 140-143. doi:10.3969/j.issn.1006-2475.2011.09.038

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This paper puts forward a model which can be used to detect and control illegal activities according to user’s network accessing behavior. The threaten of network security and the waste of network resources can be reduced effectively through building up this active supervision and guard model, which can be combined together with traditional passive preventive defense measure.

File System Performance Analysis Based on Trace Replay

SUN Zhan-wang;KANG Mu-ning;ZHANG Xiao;HE Si-min

2011, 193(9): 144-148. doi:10.3969/j.issn.1006-2475.2011.09.039

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Benchmark based on Trace replay is an important method of storage system evaluation. This paper proposes a way how to use Trace replay to test and compare the performance of different file systems. And using the Trace replay tool FSReplay, this paper compares the different performances of EXT2, EXT3, JFS, XFS, ReiserFS in different application environment.

Research on Interactive Mechanism for Thesaurus Update

SONG Pei-yan;ZHANG Jun-ming

2011, 193(9): 149-151,. doi:10.3969/j.issn.1006-2475.2011.09.040

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As the basis of knowledge organization resources, thesaurus should be updated and maintained constantly. This paper considers the mechanisms of folksonomy and Wikipedia, combines expert knowledge with user experience, explores the new mechanism for user interaction thesaurus updating and maintenance. The interactive method, which is composes by recommendations based on standardized thesauri and userdefined theme is put forward and verified by the experiment. It is expected to reveal the real needs of users accurately, and promotes the sustainable optimization of thesaurus.

Design and Implementation of Data Acquisition System of 〖JZ〗Turbulence Fluctuation Measurement Based on SD Card

ZHENG Yan-fang;LI Xue-bao;XU Guang;LI Zhi;LU Ru-wei

2011, 193(9): 152-155. doi:10.3969/j.issn.1006-2475.2011.09.041

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The dome temperature of one telescope influences the image quality of the telescope. This phenomenon is called the dome seeing. In order to detect dome temperature micro-changes, this paper designs the data acquisition system of turbulence fluctuation measurement based on SD card.It can be used to detect the small temperature changes in the telescope dome. The experimental results show that the acquisition system can collect a lot of data through multichannels at anytime. In the observational astronomy, the data acquisition system of turbulence fluctuation measurement based on SD card has practical significance for the design of the telescope dome.
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Periodic Signal’s Decomposition and Composition Based on Matlab

XI Yan-hua

2011, 193(9): 156-158,. doi:0.3969/j.issn.1006-2475.2011.09.042

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Decomposition and composition of periodic signal is analyzed with trigonometric form of Fourier series in signal and linear systems， and square wave’s decomposition and composition is simulated with Matlab. The experiment result shows that the square wave can be decomposed into the summation of DC component and different frequency cosine components (or sine components). The sum of the DC signal and limited harmonic components under certain conditions can be approximated the square wave. The error and Gibbs phenomenon are analyzed in the process of square wave’s composition. The principle of periodic signal’s decomposition and composition can be comprehended with software simulation, it is very important to understand the concept of the signal spectrum and the system’s spectrum analysis.

Design and Realization of Energy Consumption Forecasting and Temperature Monitoring System Based on Workload

HAN Bing;ZHAO Zheng-wen;ZHANG Xiao

2011, 193(9): 159-164. doi:10.3969/j.issn.1006-2475.2011.09.043

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Along with the explosive development of information industry, green storage has become a focus attracting wide attentions. This paper mainly introduces the design and realization of ECTest, an energy consumption forecasting and monitoring as well as temperature monitoring system based on workload. ECTest is a kind of real-time monitoring software of energy consumption based on C/S mod. It applies dynamic methods to estimate the realtime energy consumption of the clusters by monitoring and obtaining the workload of the computer system clusters. Now, ECTest overcomes the disadvantage of existing energy consumption test methods and reduces the estimate cost of energy consumption.

Program of Race Between Rabbit and Tortoise Based on Java Multi-thread Mechanism

YANG Hua;ZHOU Jing

2011, 193(9): 165-167,. doi:10.3969/j.issn.1006-2475.2011.09.044

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Support multithreading mechanism is a very important characteristic of Java programming language, this article focus on introduces the basic concept and the advantage and disadvantage based on the thread and based on the multi-thread mechanism, as well as multi-thread definition method. Through the program of race between rabbit and tortoise further introduces the realization based on the Java multi-thread mechanism’s application.

Application of VBA Technology in Enterprises

YUAN Shu-chun

2011, 193(9): 168-172. doi:10.3969/j.issn.1006-2475.2011.09.045

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The conventional computer application in the enterprises has been a research focus. Building fast and efficient VBA program can solve problems in practical work, and it is an efficient method. VBA technology can be widely used in corporate financial accounting, production management, technology research and development. With the advantages of easy secondary development, the short development cycle, easy maintenance and high efficiency, it can collaboratively solve many practical technical problems.

Design and Realization of Broadcast Transmitter Wireless Temperature Measurement System

YANG Zhi-yong

2011, 193(9): 173-175,. doi:10.3969/j.issn.1006-2475.2011.09.046

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In order to strengthen the informatization management taking the background of transmitter temperature measurement management system as wireless transmission, this paper realizes a radio stations transmitter temperature measurement management system, It introduces the system design ideas, design principles and system function. The system obtains higher appraisal in actual application.

Research on Special Scale Drawing Method for Plate Based on ObjectARX

YU Xiao-rong

2011, 193(9): 176-180. doi:10.3969/j.issn.1006-2475.2011.09.047

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In order to improve the efficiency of the draw plate in signs industry and standardize of operational process, this paper studies a parameterized drawing way and technology. The method combines ObjectARX 2008 and C# in Visual Studio 2008 to proceed the AutoCAD secondary development. Elaborates the structure of the design and parameterization cartography system in detail, the design as well as the process of the parameterization cartography using the design result. In the process of drawing, the computer automatically generates the special scale plate when the drawing person input the required parameters. Real applications show that the proposed method can greatly enhance the working efficiency. This system extends the scope of AutoCAD secondary development.

Research on Attribute Reduction Based on Consistency Criterion for Decision Tree Building Optimization

TANG Liang-yu;XU Ji-li;LIN Jing

2011, 193(9): 181-184. doi:10.3969/j.issn.1006-2475.2011.09.048

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Aming at irrelevant and redundant attributes could decrease the classification accuracy of decision tree, this paper proposes a method that building decision tree based on the reduction that chosen base on the consistency criterion. After the process of discretization for continuous attributes for the 5 twoclass samples from UCI machine learning repository, constructs C45 and CART decision trees based on rough set theory and consistency criterion respectively. The experiment based these 5 samples shows the method based on consistency criterion is efficient and feasible for decision tree building.

Design and Implementation of Management Information System for Graduate Based on .NET

ZHOU Bo;JIANG Ze-tao

2011, 193(9): 185-187,. doi:10.3969/j.issn.1006-2475.2011.09.049

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With the development of graduate education, it is needed to manage by information and scientific urgently. The Graduate Management Information System (GMIS) is a synthesis management system developed by advanced design methods and technologies which is based on the actual demand of the management for graduate students. It makes more transparency and information in the entire process of education and teaching. By developed this system, it not only reduces the intensity of the work of staffs and improve efficiency, but also makes the entire process more efficient and more fairness. It plays an important role in improving the quality of education and teaching.

Research on Key Technologies Based on DSOFramer for General Questions Database System

WAN Fu-ming;JIA Ru-qin;XIANG Hua

2011, 193(9): 188-190. doi:10.3969/j.issn.1006-2475.2011.09.050

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How to realize edition of image and text mixed test questions, access into database, and make paper quickly and easily, is a big and difficult problem in the development of general test bank system. This paper introduces a way that using DSOFramer activeX control, OLE Word embedding, binary flow and Windows clipboard to develop questions database system in detail. This paper also discusses the key technologies, and the key codes are given.

Research and Implementation of Aviation Insurance Agent Sales System Based on LAMP

ZHAO Feng

2011, 193(9): 191-194. doi:10.3969/j.issn.1006-2475.2011.09.051

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According to the sales need of aviation insurance, this paper studies and realizes a sales system of insurance agent. The framework of aviation sales system is B/S, the server is Apache, the database platform is MySQL, and PHP technology is adopted. The whole system is separated into several parts: user login, insurance sales, inquiries orders and distribution management. The paper elaborates the function of each module, and discusses the key technologies and methods emphatically.

Design and Implementation of Digital Photos Cataloging Template Based on Excel VBA

LIN Mu-chan;CAI Ying

2011, 193(9): 195-198. doi:10.3969/j.issn.1006-2475.2011.09.052

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During archive management, there are always relevant graphic that textually integrate with the attribute information of stuffs such as digital photos, material objects, devices, school rolls, HR archives management and so on. Both the graphics and text will be displayed within the same window in order to satisfy the requirements for being viewed or recorded. However, the builtin record sheet of Excel and the normal general management system can not offer the function as discussed above. This paper probes into a method that can be used for acquiring the record interface with both graphics and text of digital photos based on the VBA of Excel.

A Multi-touch Software Architecture

GU Zhao-hui;LIU Zhi-heng;WANG Zheng-wei

2011, 193(9): 199-200,. doi:10.3969/j.issn.1006-2475.2011.09.053

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In recent years, with the development of the multi-touch technology, there has been a large number of available multi-touch interface software. But the characteristic of this phenomenon is that there is not a large extent similar in different softwares, but not much interoperability. In order to improve the interoperability and compatibility of different software, this paper extracts the common features of them, according to features of these software systems, and proposes a layered software architecture. The architecture defines a common interface between different levels, and for developers to shield the different types of hardware platforms, provides a unified view.

Research on Strategy of Load Balancing in Distributed ETL

ZHANG Liang;XIA Xiu-feng

2011, 193(9): 201-204. doi:10.3969/j.issn.1006-2475.2011.09.054

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After analyzing the importance of load balancing in distributed ETL, aiming at the limitation of traditional ETL used in distributed data warehouse, a new strategy that the data extracted from ETL node are divided according to the type of data is proposed, and then presents a new model of load balancing R-CN model that is combined by chain network model and Routers. On the basis of that presents a new load balancing strategy based on the data segment strategy and R-CN model. The strategy improves the ability of data processing greatly, and it also effectively increases the efficiency of distributed ETL.

Design of Catering Business MIS

WANG Wei-ci

2011, 193(9): 205-206,. doi:10.3969/j.issn.1006-2475.2011.09.055

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With the development of catering businesses, it is necessary that a catering business builds a modern MIS of itself. This paper analyzes the critical technique of data management and designs the function modules of a catering business MIS. Using C# and SQL Server 2005, the MIS is developed and it improves the management quality and efficiency of the catering business.

Research on SOA Used in Information System of Party Affairs Management

WANG Rui-juan

2011, 193(9): 207-209. doi:10.3969/j.issn.1006-2475.2011.09.056

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SOA is the new method of the next generation of software systems development. This paper introduces the SOA concept, SOA system architecture and the analysis and design method of SOA. Based on the above theoretical, the paper proposes the system architecture of the partyaffairs information system and how to process the system service modeling based on SOA.

Research on Evaluation Method of Software Testing Cost

CAO Jing;SHAO Zong-you

2011, 193(9): 210-214. doi:10.3969/j.issn.1006-2475.2011.09.057

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Software testing is one of the most important technique in the field of software engineering. Being a hard work, evaluation of software testing cost play a vital role in software testing. This paper proposes three steps method for the evaluation: first is evaluation of software scale; next is evaluation total work-load according to different software scale and evaluation model which including experiential model for small scale software testing, COCOMO model for mediumsized software testing, dynamic multi-variable model for large scale; finally is evaluation of software testing cost.

]Implementation of Reader-writer Lock by Critical Section

SUN Jian-jie;CHEN Jia-pin

2011, 193(9): 215-219. doi:10.3969/j.issn.1006-2475.2011.09.058

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For the lack of a standard reader-writer lock mechanism for the multi-thread synchronization in the Windows environment, the paper discusses three implementations on the reader-writer lock in use of the critical section and gradually reveals the advantages and disadvantages. The design of a reader-writer lock can be achieved by numbers of critical sections, and the different combinations will have the diverse read / write priority tendencies. Because multiple threads try to enter and leave the readerwriter lock on the complex cross-operation, there needs further analysis and testing for the internal details of the critical section in the specific circumstances to ultimately ensure the reliability of the reader-writer lock’s implementation. The paper also provides some details on try-lock mechanism.

Exploration and Practice on Maintenance of Computer Laboratory by Using Old Hardware

LI Zhan-fen;LIU Jin-gang

2011, 193(9): 220-222. doi:10.3969/j.issn.1006-2475.2011.09.059

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This paper analyzes the problems of management and maintenance in college computer laboratory, it proposes a practical method of using old hardware to solve the problems of software system conflict and data security, dual hard disk system and old server problems. Experimental results show that the method of laboratory management introduced is effective.

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