Journal of Jilin University (Information Science Edition)

Improved Random Dynamic Allocation Algorithm of OVSF Code

ZHENG Bao-xin，SHI Wen-xiao，XU Li-na

J4. 2008, 26 (06): 0-0.

Abstract ( 541 )

Random dynamic code allocation algorithm has a high blocking probability and too much overhead cost in searching for the minimum-cost branche in downlink of WCDMA（Wideband CodeDivision Multiple Access） systems, so we proposed an improved version of a dynamic code allocation algorithm. The algorithm uses the minimum-cost searching function to the code tree rearrangement based on the principles of neighbouring, and releases of a code at the same level with the greatest cost function in the value of the code strategy. The simulation results show that the probability of improved algorithm is less than the algorithm of random dynamic code allocationt algorithm. When the traffic load is 16 Erl, the improved version of a dynamic code allocationt algorithm can reduce the probability by 1837%. And the same time the improved algorithm can effectively reduce the complexity of the system.

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Study of New Perfect Periodic Correlation Array Signal

MAO Fei ¹, WU Ning¹,ZHOU Zheng²

J4. 2008, 26 (06): 0-0.

Abstract ( 339 )

A new periodic correlation signal is proposed, APPBAP (Almost Perfect Punctured Binary Array Pair). The definitions of APPBAP and its transformation properties are presented. To reduce the searching range and improve the searching efficiency of almost perfect punctured binary array pair, limited conditions of APPBAP are discussed. Based on these limited conditions, many almost perfect punctured binary array pairs with small length no more than 22 are searched. The searching results show that almost perfect punctured binary array pairs have such high energy efficiency that they are feasible for engineering applications as synchronization codes and multi-user codes.

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Chaotic Dynamics Movement Under Invoke of Non-Gaussian Bounded Noise

YI Wen-suo^1,YU Xiu-min^2a,SHI Yao-wu^2b

J4. 2008, 26 (06): 0-0.

Abstract ( 369 )

To address signal detection theory in communication, radar, sonar, fault diagnosis, and other restricted areas of application, put forward a random method of nonlinear Melnikov system and in weak signal noise signal cycle perturbation of the United chaotic motion, to be The cycle of weak signal and non-Gaussian noise signal smooth bounded joint perturbation of chaotic motion characteristics. Chaos and the amplitude of the critical relationship between the noise level shows that do not have a strong non-Gaussian smooth bounded noise, noise increases the incentive industry threshold, the chaos is not easy to produce.

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New Idea of Flame Simulation in Real-Time

LI Wei-wei^a,WANG Jian^b,CHEN Yi^a,WANG Zheng-xuan^a,b

J4. 2008, 26 (06): 0-0.

Abstract ( 351 )

To solve the problem of the flame simulation on computer, a new algorithm of flame simulation in real-time was proposed. This idea absorbs the merits of physical method and particle system. The animation of the flame is controlled by the Navier-Stokes equations which is solved by the semi-lagrange method. The idea of using particle system to modify the Navier-Stokes equations was raised。 And using density field and the principle of color to control the color of the flame. The animation is accelerated realized on GPU (Graphics Processing Unit). The simulation of flame which has the character of realistic and real-timing were realized .

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Research on Prediction of Automobile Customer Behaviors Based on CRM

WANG Ying-shuang^1, ZHOU Yu-qin^2, HUANG Lan^2

J4. 2008, 26 (06): 0-0.

Abstract ( 357 )

In order to solve the problems of automotive customers behavior prediction to predict the marketing trends accurately,we adopted 16 customerspurchase information as our sample data, and cleaned up and summed the data based on the theory of CRM(Customer Relationship Management), using the SQL Server we built the automotive marketing data warehouse model as the input of the whole process. We adopted the improved ID3 decision tree model and the association rule model to do data mining, and got information of market-predicting. And verified the validity of our prediction results through experiments and contrasts.

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Design of Agent for Email Filtrating

SUN Ying-juan^1,2, PU Dong-bing³, SUN Ying-hui^4, LI Chun-yi^1,ZHOU Chun-guang^1

J4. 2008, 26 (06): 0-0.

Abstract ( 354 )

In order to filter out the dump emails, a new algorithm and Agent design for email filtrating are proposed. The Agent can learn from received email information and users operating habit with the algorithm, and confirm whether a new email is dump email or viruses email in order to filtrate it ultimately. The experiment shows the Agent can achieve 85％ correct ratio. An ameliorating method were presented for existed email system.

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Data Cleaning Algorithm Based on Unsupervised Learning

SUN Tie-min^a,YU Jie^b,SHANG Cheng^c,TIAN Da-xin^c,ZHANG Li-hua^a

J4. 2008, 26 (06): 0-0.

Abstract ( 447 )

To resolve the similarity and iteration record problem in the data warehouse, a data cleaning algorithm which is based on unsupervised learning was put forward. The learning method is based on the Hebbian postulate and the main idea of the learning is that the similarity level decides the rewarded and penalized rate. To overcome the problem of dead cluster a new cluster is constituted when no existing cluster is similar to one pattern. After learning, another important task is to detect whether there are wrong clusters, if one is found, the cluster will be deleted and combined with the cluster which is the most similar cluster to it, and thus the result of clustering is more accurate. In the experiments, the learning algorithm is applied to clustering task to check its capability and the results show that it performs accurately.

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Peripheral Basin Multi-Source Geological Data Management System Based on GIS

LIU Dan, MENG Ling-shun, JIANG Fu-yu, LIU Yan-xu

J4. 2008, 26 (06): 0-0.

Abstract ( 369 )

To effectively preserve and use of geological survey data, the peripheral basin multi-source geological data management system in Daqing prospect was established based on GIS(Geographic Information System). The system was one of the subdatabase of geoscience database in that area. Taking GIS and Access 2003 software as platform for establishing dimensional database and attribute database, and using Mapobject,DAO(Data Access Object) technique and advanced programming language Visual Basic 60, each function of the gravity database was realized. The system can carry out the function of data adding, deleting, inquiry and management, etc. Also, a toolbox for processing general gravity data was developed, which can realize the function of analytic continuation, vertical differentiation, horizontal differentiation, normalized general gradient calculation, etc. The geological, geophysical and geochemical data from the study area can be integrated, analyzed and compared by using this system. It can also provide basic information and technical support to determine the location, number and quality of the oil and gas resources region.

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On Hamming Gracefulness of Quadrilateral Cactus Graph

LI Xiu-fen¹,PAN Wei^2

J4. 2008, 26 (06): 0-0.

Abstract ( 357 )

Hamming gracefulness of graphs problem, in computer networks graceful embedding aspect, has the good application value and the broad research prospect. So far, few related works has been done in domestic and abroad. Therefore, we introduce and establish the labeling function method to prove that the graphs G+C₄ were hamming-graceful, which hamming-graceful graph G random vertex hangs a circuit C₄ obtained graphs. An important conclusion was proved from this all connections quadrilateral cactus graph are hamming-graceful graphs in which graph C₄ is an 4-vertex circuit.

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Development Method and Examples Based on Spring+Hibernate

LI Hong-mei^1a,WANG Jian²,LI Wei^1b,ZHAO Dan^1b,LIU Zhuang^1b

J4. 2008, 26 (06): 0-0.

Abstract ( 324 )

There were issues in the area of reducing cost and development cycle, easing feature modification and upgrade in the development of enterprise grade application software with EJB (Enterprise Java Beans) mechanism. We have developed a system by integrating two open source software products, Spring and Hibernate deployed on MS SQL server 2000 database with Jbuilder9 as development and test IDE (Integrated Development Environment) for speed development and component reuse. The feasibility of the system in providing solution to enterprise grade application software is verified with real examples.

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Colorimeter System Based on TCS230 Sensors

LU Chuan-ying1,YU Hao-cheng2,SUN Jing-hui3,MENG Zhong3

J4. 2008, 26 (06): 0-0.

Abstract ( 405 )

In order to increase the efficiency of color test and the peed of traditonal Colorimeter sensors,reduce the test error and simplify circuit,we introduce the Colorimeter sensors of America TAOS(Texas Advanced Optoelectronic Solutions) company-TCS230 sensors.By using TCS230 and microcontroller 89C2051, a new Colorimeter System can be achieved. Also,the article introduces the hardware design of this system and the flow chart of the software.The precision of this system is above 10 bit and respond freqency is 2~500 kHz. This system has the new feature of programmability,digital signal output,high counter-interference capability and so on, it has been widely used in Colorimeter test control field.

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Admission Control In Distributing Network Resource

WENG Su-xiang^{1, 2},JIN Yong-sheng¹, WANG Yan-li^2

J4. 2008, 26 (06): 0-0.

Abstract ( 290 )

Admission control decides if a new stream service request can meet the limitation of the network load without destroying the QoS(Quality of Service) to the stream already exist. In fact, the network cannot often meet the full request of the network load, admission control also take charge of deciding when to bring a busy signal. Based on parameters and on measurement ,all kinds of admission control technology were analysised, their differences were compareanded,the virtue and the shortcoming of corresponding technology were analysised. As a result, it can provide a basis to enhance QoS and the value in use of Internet. Admission control is the important step in the distribution of network resource, and the efficiency method to implement logical distribution. Admission control can finally realize Internet QoS.

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Research of Sidescan Sonar Target Auto Detection

ZHU Dian-yao, BIAN Hong-yu

J4. 2008, 26 (06): 0-0.

Abstract ( 373 )

It is difficult to extract the features of underwater acoustic images because of the noise interference, multi-pass, reverberation. A method of target from sidescan sonar image auto detection is summarized by considerable experiments and analysis, including image enhancement, binary, binary opening and binary closing, feature extraction, feature computing and target recognition.

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Research on Data Transmission of Embedded Network Based on CS8900A

YU Zhi-hong, MENG Fan-er, MA Xu-bing, ZENG Xiao-guang, YU Zhe-zhou

J4. 2008, 26 (06): 0-0.

Abstract ( 318 )

To address the issue that there is no corresponding driver in ADI BF533 DSP(Digital Signal Processor) platform,we studied the working state of CS8900A in different state and implement the driver.The interrupt processing mechanism,the read and write mechanism of register in CS8900A,are designed using error-handle mechanism in CS8900A.We solve the problem of embedding OS bottom driving and transmission and implement the network transmission of embedding system.

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Research of Resource Codes Remote Rewriting about AVR Atmega Series Singlechip

WANG Cong-ze¹, ZHANG Zhong¹, WEI Li-ming¹, HAN Cheng-hao¹, ZHU Yi²

J4. 2008, 26 (06): 0-0.

Abstract ( 400 )

In order to reduce costs, simplify the hardware design about remote monitoring system and increase systems stability,based on AVR Atmega series of MCU(Micro Computer United) Flash code structure of the district, the reading and writing RWW(Read-While-Write) , non-reading and writing at the same time (NRWW:Not Read-While-Write), boot loader, the application areas are studied. The development of the download page guide treatment, examples program(the direction of the net topology map about the management system of students using electricity), and code conversion are improved. The main purpose of the research is reducing costs, simplifying the hardware design about remote monitoring system and increasing systems stability.The practice has proved that the applications of the resource codes long-range rewriting about the single-chip of AVR Atmega series, remove a series of the complex external circuit that can achieve remote upgrade in the past.

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Interface Design of SPP and Drivers Development Based on ARM and Embedded Linux

SUN Jing-yan1,LI Ming-ge1,PIAO Ren-shu1,GUO Tie-ying2,ZHOU Guang-lu3,ZHONG Yu-zhen1

J4. 2008, 26 (06): 0-0.

Abstract ( 312 )

In order to expand the application of parallel port in special Embedded System,the platform of SPP(Standard Parallel Port） standard parallel port is designed and realized, for ARM9 CPU and the embedded Linux. According to the design of hardware and simulation confirmation,the connection of S3C2410A and parallel port is introduced, and the stack of parallel port driving device is analyzed. Finally the lp upper level driver and the parport low level driver are developed.This will help us achieve the printer module based on the ARM9 S3C2410A and the platform of embedded Linux.

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Study on Electronic Throttle Control Based on Non-Linear Sliding Mode Control Theory

WANG Ting¹,ZHU Er-xin²,LIN Xue-dong²

J4. 2008, 26 (06): 0-0.

Abstract ( 376 )

Precise ETC(Electronic Throttle Control) is critical to powerful torque-based engine management system. Aiming at the problems brought by the non-linearity of the restoration spring of the electrical throttle, combing the the electric throttle structure, its non-linearity is analyzed.The sliding mode control algorithm is adopted and its stability certification is given. Experiment with conventional PID(Proportional Integral Derivative) and sliding mode control is carried out on the electrical throttle using the control board based on 16 bit 80C196KC singlechip. The experiment shows that when variable PID is used, no overshoot exists when the open degree of ECT changing from small degree to large degree, and when its changing from large degree to small degree, the overshot is 48％.Whiling the sliding mode is used no overshoot exists when the open degree of ECT changing from small degree to large degree, when its changing from large degree to small degree, the overshot is 1％,is reduced greatly. The sliding mode control system has a good control result to the non-linearity of ETC.

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Web Services Virtual Portotype Enterprise Information Systems Research

KAN Hao-jie1, ZHANG Hao-ran2，LI Song-qing2

J4. 2008, 26 (06): 0-0.

Abstract ( 346 )

In the operation of virtual enterprise to address how UDDI（Universal Description Discovery and Integration） select the appropriate partners, Web Services between the workflow issues. Web Services based on the virtual enterprise information system architecture of the prototype. Web Services by virtue of its loose coupling, a complete package, a high degree of integration and good cross-platform and open, and other characteristics into building a virtual enterprise information system is the appropriate technology. The heterogeneous distributed systems used in Web Services technology is the trend of the times, it should conform to this trend, the use of advanced, low-cost solutions. In the virtual enterprise and Web Services on the basis of the analysis, the feasibility of the method are discussed.

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Interface Design and Development of ETL in TelecommunicationsBusiness Data Warehouse Platform

GU He

J4. 2008, 26 (06): 0-0.

Abstract ( 386 )

For currently the database of business system in telecommunications business did not have a very good connection leading to an issue of information island,using of the data warehouse,the new data organization and storage methods, to effectively deal with data analysis and decision-making for the telecommunications business. According to business data, the data warehouse platform, the functional framework and software are developed. Through the interface design to norms and organizations datas is necessary, carry on configuration environment based on the regulate and organizations, the data will be pretreated loading the ODS through DI Designer, completion the data acquisition, storage, and visit by ETL(Extraction Transformation Loading）. The establishment of the platform can be to united the data of the each production system, and provide a strong background support for development and displayof the front,benefit the policy-making level more accurate grasp development situation of the enterprise.

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