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Volume 26,Issue 1,2003 Table of Contents

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    • 1  An Accurate Method of the Analysis of Allowable Error for the Self-adjustable Mechanisms Without Overconstraint
    AN Pei? wen ,  HUANG Mao? lin
    2003, 26(1):1-3. DOI: 10.11835/j.issn.1000-582X.2003.01.001
    [Abstract](502) [HTML](0) [PDF 248.74 K](250)
    Abstract:
    Aiming at the problem of the feasibility of the supposed self adjusting displacement equation when using the present method in the analysis of allowable errors for self adjustable mechanism with the mathematic approach of rotating vector, the authors establish the self adjusting displacement equation in the cylindrical pair, and calculate the self adjusting displacement to draw out the curve of the displacement by programming. The above results show that the suppose mentioned previously is feasible. Base on the equation established, an accurate method is used to determinate the allowable error angles which can make the mechanism realize self adjustment presented. By analyzing the results of the example, the method presented is proved to be correct and effective.
    2  Analysis on Control Strategy for a Kind of Uncertain Complexity System
    LI Tai? fu ,  FENG Guo? liang ,  ZHONG Bing? xiang ,  LIU Yu? cheng
    2003, 26(1):4-7. DOI: 10.11835/j.issn.1000-582X.2003.01.002
    [Abstract](671) [HTML](0) [PDF 355.54 K](201)
    Abstract:
    In practical industrial fields, it is very difficult to control uncertain complexity object effectively, because there are various uncertainties from internal dynamic characteristic and external, surroundings disturbance for controlled object. Its complexity is not only shown in structure, but also in information relation, so it is uneasy to implement it on technology. Aimed at selecting puzzle of control strategy for uncertain complexity system control, the authors describe cybernetics model based on analysis on some kinds of control strategy and contrastive research, and the model is applied in physical engineering system successfully. Finally, the authors point out that intelligent control strategy should be selected for uncertain complexity system control, and that Human Simulation Intelligent Control is a wise choice.
    3  Health Record Management System in Visual Electroencephalograph
    PENG Li? ling ,  CAO Yi ,  JI Zhong ,  QIN Shu? ren
    2003, 26(1):8-11. DOI: 10.11835/j.issn.1000-582X.2003.01.003
    [Abstract](520) [HTML](0) [PDF 491.02 K](182)
    Abstract:
    Visual Electroencephalograph (VEEG) is a new type of digital, information electroencephalograph. As an important part of Visual Electroencephalograph, Health Record Management System(HRMS)is integrant to store electroencephalographic data plentifully, show and edit their waveforms, analyze the data on line or off line. By the most popular and steady Relational-Database technology, ADO Application Programming Interface (API) and Visual C++ programming tool, the system has the friendly interactive interface and the functions of adding, updating, deleting, recalling, counting health record information, etc. Integrated with other parts of VEEG, HRMS ameliorates traditional EEG and overcomes some disadvantages of it such as discommodious to record, difficult to read and hard to get useful information. This paper introduces main functions, structure design and components of Health Record Management System.
    4  Research and Application of utomation Create of Dimensional Chain Equations under CAD Environment
    HE Jing? xi ,  ZHANG Gen bao ,  ZHAO Yong
    2003, 26(1):12-14. DOI: 10.11835/j.issn.1000-582X.2003.01.004
    [Abstract](627) [HTML](0) [PDF 228.40 K](176)
    Abstract:
    Dimensional chain calculation plays an extremely important role in martial productions, particularly auto weapon design. In order to performance higher efficiency, reduce mistakes and realize computerized course of calculation, is vector organum method introduced in calculations. How to directly get dimension information from split graph of assembling graph, and create equations automatically by vector organum method are introduced. The results of application indicate that the method suits any case of split graph of assembling graph, can relieve fatigue of the engineers, and got perfect effects.
    5  Optimization Method of Turbine Impeller''''s Stress and Deformation Calculation
    YE Kang? feng ,  WANG Bing? le
    2003, 26(1):15. DOI: 10.11835/j.issn.1000-582X.2003.01.005
    [Abstract](557) [HTML](0) [PDF 272.60 K](144)
    Abstract:
    Taking into the feature of computer computing method, using Stress solution of elasticity theory and according to different method of solving of system of second order ordinary differential equations , this article provides two numerical value computing method as for the stress and deformation of the turbine impeller which is within the scope of elasticity . One combines the initial value computing method of system of ordinary differential equations (Runge-Kutta Method) with optimization method, another combines the boundary value computing method of system of ordinary differential equations difference method-with optimization method and three points interpolation method . The proposed method can eliminate the deficiencies of Secondary Calculation method and is particularly suited for programmable computer-based solution . The sample show that results gotten by two methods is nearly equal to the precise results,so they are practicable. They completes the quick and precise calculating of stress and deformation . They have some general meaning , large commonality and the project employing value.
    6  Image Secure Communication Based on Logistic Map
    PENG Jun ,  LIU Yong? guo ,  LI Xue? ming ,  ZHANG Wei ,  LIAO Xiao? feng ,  WU Zhong? fu
    2003, 26(1):18-21. DOI: 10.11835/j.issn.1000-582X.2003.01.006
    [Abstract](580) [HTML](0) [PDF 336.90 K](212)
    Abstract:
    The chaotic sequences generated by logistic map are used as the carrier, and the image secure communication scheme is proposed based on that the sequences possess a good correlation property. Promising results are obtained on Lenna image by computer simulation. The obtained results indicate that the transmitted source image can be correctly recovered and the proposed scheme is reliable when transmitter and receiver using identical initial value even under the situations of a noisy channel. However, the tiny difference of initial value between transmitter and receiver will result in failure to communication. Finally, the quality of recovered source image is assessed, and the approximate formula of bit-error rate in term of code length is also obtained.
    7  Walsh Sequences Generation with Rademacher Functions and Its Digital Realization
    TAN Xiao? heng ,  ZENG Xiao? ping ,  LIU Jing
    2003, 26(1):22-24. DOI: 10.11835/j.issn.1000-582X.2003.01.007
    [Abstract](640) [HTML](0) [PDF 258.29 K](243)
    Abstract:
    This paper first discusses the application of Walsh sequences in the forward link and the reverse link of the IS-95 system. The advantages and disadvantages of each way generating Walsh sequences are analyzed. The theory and step of using Rademacher function to construct Walsh sequences is discussed especially. Then a way of generating Walsh sequences with CPLD is presented and the Design is described by VHDL on CPLD chip. This way mostly relays on digital logic operation, so it can be realized easily through digital circuit and it needs little memory unit. The result of emluator makes clear this way is feasible.
    8  Compare Research of Two Filter Approaches on the Data of Rocket
    GAO Bo ,  HAN Feng? qing ,  HUANG Xi? yue ,  LI Bin
    2003, 26(1):25-27. DOI: 10.11835/j.issn.1000-582X.2003.01.008
    [Abstract](400) [HTML](0) [PDF 224.10 K](203)
    Abstract:
    传统的火箭飞行数据处理方法是使用α-β-γ数字滤皮离线处理，对飞行数据采样信号的第1点、第2点不进行滤波估值，第3点开始逐个进行估值、预测、校正。该方法需要消耗大量的时间，并且滤波后信号的残留噪声仍然较多。针对此问题，经过大量的数值实验和理论分析，发现用小波方法实时处理火箭飞行数据效果较好，比较两种结果，证明无论是滤波后信号的残留噪声还是消耗的时间上小波方法都优于α-β-γ滤波，且实现了数据的实时处理功能，应用前景好。
    9  Designing and Realization of Leak Current Fault Flatroof for Lauch Vihicle Controlling System
    TANG Xian? ming ,  FAN You? ping ,  MAO Wan? biao ,  HANG Rong? jun ,  ZENG Xue? hong ,  HUANG Xi? yue
    2003, 26(1):28-33. DOI: 10.11835/j.issn.1000-582X.2003.01.009
    [Abstract](387) [HTML](0) [PDF 578.85 K](910)
    Abstract:
    A visualized analysis system of leak current fault transmission graph is developed. Its functions, program structure and programming principle are described.The system is composed of fault diagnosing module and man machine exchanging module, which make the generation and analysis of leak current fault transmission graph for lauch vehicle controlling system simple and visualized. The system could automatically recognize the picture of transmission and analyze both qualitatively and quantitatively only by drawing it on the monitor by the mouse. Finally an example is given, where a satisfying result is acquired via drawing inputting method which is totally new and expanding-complementing the fault tree alglorithm.
    10  Application of Intelligent Neural Network on Prediction of Time Series Signal
    WANG Cheng? liang ,  SONG Jun ,  HU Bing? quan ,  ZHANG Qin
    2003, 26(1):34-37. DOI: 10.11835/j.issn.1000-582X.2003.01.010
    [Abstract](683) [HTML](0) [PDF 316.53 K](1439)
    Abstract:
    The research of neural network has been maturated both in theory and practical application since 1980's, and also been employed into the prediction and analysis of nonlinear time series signal in the field of signal process system. Concerning with the problem of time series signal prediction based on traditional neural network, such as black box, poor accuracy, and facing the shortage of post knowledge, this paper presents a different neural network prediction model from the traditional ones, based on intelligent neural cell model and employing the iterative prediction method. Through the example on stock price prediction, the prediction accuracy and practical value are proved.
    11  Virtual Studio System Technology
    QIAO Yu ,  HUANG Xi? yue ,  CHAI Yi
    2003, 26(1):38. DOI: 10.11835/j.issn.1000-582X.2003.01.011
    [Abstract](959) [HTML](0) [PDF 490.59 K](1741)
    Abstract:
    Virtual studio system (VSS), a new technology based on virtual reality, develops fast in recent years. Virtual studio concept replaces real background sets with computer generated 3D synthetic and combines real foreground action, with computer generated backgrounds. As VSS need not construct real background sets and has little limitness of time and space, it is regarded as a revolution in TV programs. This paper mainly discusses about the background, technology feature, application and future.
    12  Low Voltage Power Line Communication Based on MSK
    ZHONG Yuan chang
    2003, 26(1):42-44. DOI: 10.11835/j.issn.1000-582X.2003.01.012
    [Abstract](717) [HTML](0) [PDF 214.04 K](1053)
    Abstract:
    For that the characteristics of low voltage power line channel are complicated and variable, how to use low voltage power line to realize reliable and high speed communication has always been the hottest question in power line communication field. This article introduces how to apply MSK to the low voltage power line communication. It analyses the application elements of MSK and structures the model of low voltage power line communication based on MSK. simulation result indicates that MSK modulation technology can satisfy the characteristics that the bandwidth of power line communication channel is narrow and the attenuation to the amplitude of signal is time variable and frequency selected. Also, it makes better use of the spectrum.
    13  Design of PCI Bus Controller Based on I/O Transmit
    YANG Jie ,  LUO Jun
    2003, 26(1):45-49. DOI: 10.11835/j.issn.1000-582X.2003.01.013
    [Abstract](741) [HTML](0) [PDF 435.33 K](1596)
    Abstract:
    With the microcomputer improving and multimedia and wideband network developing. the I/O bandwidth requires more and more. The last standard bus, for example, ISA, EISA and MC can not be satisfied with the demand of the modern technology. In this case, the PCI bus appears, and become the master standard bus. Now there are two methods to realize the PCI Controller circuit, which are the special chip and the programming logic chip. The PCI system structure is introduced,and a PCI Bus Controller is Fealized based on the I/O transmit through using a Lattice1032E chip. Which has proved successful by application.
    14  Novel Power Supply Method and Technology Analysis for Electrified Monorail System
    DAI Xin ,  SUN Yue
    2003, 26(1):50-53. DOI: 10.11835/j.issn.1000-582X.2003.01.014
    [Abstract](709) [HTML](0) [PDF 343.98 K](1449)
    Abstract:
    The problems of industry monorail conveying system brought by tradition physical contact such as irregular contact spark, carbon laydown and unsafe, narrow the area which the material handling system can apply to in awful industry environment, e.g. forge, cleaning, lacquering. A novel monorail power supply method based on electromagnetic coupling theory is presented. Discussions are made on several problems such as frequency selection, load control, efficiency elements and harmonic effects at the same time. Moreover, solutions are brought about according to them. The monorail application of this technology provides clean, stable and safe power supply, and immunes to environment interference such as dust, water as well.
    15  The GDSS Framework of Organization-Oriented Dynamic Alliance Based on Multi-Agent
    LI Qin ,  SHI Wei? ren ,  JIN Yan
    2003, 26(1):54-57. DOI: 10.11835/j.issn.1000-582X.2003.01.015
    [Abstract](725) [HTML](0) [PDF 346.14 K](1206)
    Abstract:
    The important strategy decision making system, one of the difficult problems of the research of Group Decision Support System, is an open complex huge system, which is almost non structure and hard to construct. In order to organize and take advantage of decision making departments more effectively, this paper presents the thought of combining Multi Agent System with Dynamical Alliance and set up the GDSS Framework of Organization Oriented Dynamic Alliance based on Multi Agent after analyzing the characteristics of MAS and Dynamical Alliance. Different departments can be organized more effectively on the three layer system structure composed of the strategy layer, the tactics layer and the operation layer. The decision making layer of each department is composed of the integrate decision making subsystem, which means that the decision making layer of each department can be used solely or be a part of Dynamic Alliance to make the important strategy decision and the system gets more flexible.
    16  Two-dimension Opto-electronic Test Method to Determine the Cancellous Bone Porosity
    CHEN Hai? bin ,  LI De? yuan ,  LIAO Hai? yang ,  LIU Jing? cheng ,  XIAO Kai ,  LIU Da? wei
    2003, 26(1):58-61. DOI: 10.11835/j.issn.1000-582X.2003.01.016
    [Abstract](942) [HTML](0) [PDF 392.31 K](1573)
    Abstract:
    A two dimension opto electronic test method has been developed to determine the distribution characteristics of cancellous bone porosity. The fresh pig tibiae concellous bone in behind leg was sectioned. A total of 36 cancellous bone sections were divided two groups. The first group consisted of 18 transversal sections along the axial direction, and the second group consisted of 18 axial sections along the transversal direction of the tibiae. Their images were examined microscopically and processed quantitatively. The total area, solid matrix area and pore area of each specimen and its porosity were determined, too. The cancellous bone porosity is gradually decreased along the axial direction of tibiae and approaching to the compact bone, but almost constant along the transversal direction. Cancellous bone is modeled as a transversely isotropic, liquid saturated porous solid. The two dimension opto electronic test method can be used to relatively accurately determine the distribution characteristics of the cancellous bone porosity from different directions if the cancellous bone sections are enough.
    17  Combination Forecasting Models Using Regression Analysis Method
    XIE Kai? gui ,  ZHOU Jia? qi
    2003, 26(1):62-65. DOI: 10.11835/j.issn.1000-582X.2003.01.017
    [Abstract](755) [HTML](0) [PDF 284.65 K](2769)
    Abstract:
    Using regression analysis method,the methods for solving the weights of combination forecasting model(CFM) are proposed. At first, the linear regress CFM are presented based on the least absolute criteria and least square criteria. Then the weights can be evaluated using the least square princinple. Because the objective function of CFM based on least absolute criteria is non differential, the traditional programming methods can not solve it. So the least square method with the modified weights is proposed to solve this problem. At the same time, methods for solving CFM is given with the aim of minimizing sum of percentage error absolutes. From many cases, the results show that the forecasting precision of CFM is very high and the effect of regression is remarkable.
    18  Application of Continuous Wavelet Transform to Pulse Signal Processing
    XIE Jia? yu ,  CAI Kun bao ,  WANG Yong? dong
    2003, 26(1):66. DOI: 10.11835/j.issn.1000-582X.2003.01.018
    [Abstract](673) [HTML](0) [PDF 311.81 K](1073)
    Abstract:
    小波变换具有良好的时频局域化性质，适合于非平稳信号的处理。脉诊是中医诊察疾病的重要手段，脉象反映的是人体的生理与病理信息，脉象信号具有随机性和非线性等特点。应用连续小波变换分析了15例海洛因吸毒者和15例正常人的脉象信号，提取了吸毒者脉象信号中的异常信息，为戒毒治疗的评估与改进提供客观依据。在尺度0.1、0.2、0.3和0.4下，对每一例脉象信号分别进行了处理，发现在0.2-0.4s时间间隔内，海洛因吸毒者和正常人脉象信号的连续小波变换系数间存在显著差异，并提出了用于划分海洛因吸毒者一正常人的临界参数。研究结果表明，连续小波变换是处理脉象信号的有效方法。
    19  Application of the Distributed Communicative Network Based On CAN BUS
    SUN Tao ,  LIU Zong? hang ,  WU Bin
    2003, 26(1):69-72. DOI: 10.11835/j.issn.1000-582X.2003.01.019
    [Abstract](791) [HTML](0) [PDF 314.54 K](195)
    Abstract:
    In the design of the monitor and control system, the data of the individual units are exchanged frequently, at the same time, the working conditions of the system is very hard, which has strictly need for the communicative speed, communicative distance, as well as the anti disturbance. According to the actual need, the paper introduces the application of controller area network BUS for the system of the monitor and control. The actual operation has proved that the CAN BUS is fitful for monitor and control system in the communicative speed, communicative distance, the anti disturbance ability as well as the flexibility of the communicative network.
    20  Decomposition Properties of Witherite Mineral in High Temperature
    WU Cheng? bo ,  ZOU De? yu ,  ZHANG Li ,  XU Yuan
    2003, 26(1):73-76. DOI: 10.11835/j.issn.1000-582X.2003.01.020
    [Abstract](560) [HTML](0) [PDF 292.50 K](192)
    Abstract:
    提出了经济合理地开发利用毒重石钡矿资源生产钡产品的方法，研究了毒重石钡矿高温分解的机理，探寻采用高温焙烧使毒重石钡矿分解的最佳条件，为毒重石钡矿的利用开辟新途径。理论分析认为，毒重石钡矿在900℃左右开始分解，1200℃开始大量分解，1300℃约有90％的BaCO3已经分解。并通过一系列实验对焙烧条件作了比较细致的，认为毒重石钡矿高温焙烧的适宜条件为：粒度6-9mm、焙烧时间3h、焙烧温度控制在1300℃以内。
    21  A Model Analysis to Beam Bar Slippage of Seismic Structure Joints
    YANG Hong ,  BAI Shao? liang
    2003, 26(1):77-82. DOI: 10.11835/j.issn.1000-582X.2003.01.021
    [Abstract](592) [HTML](0) [PDF 575.69 K](147)
    Abstract:
    Many experimental results indicates, beam bar slippage within joints is a frequent local nonlinear response of reinforced concrete structures under the rare earthquakes. For the sake of modeling and evaluating seismic behaviors of reinforced concrete structures entirely and rational, the model way of the quantity and hysteresis order of beam bar slippage within joints, which was found in the elasto plastic earthquake response of structures, is discussed thoroughly. And the personal characteristics of several structure analysis ways to model the beam bar slippage within joints are evaluated respectively. Based on the results already gotten, a hysteresis model of beam bar slippage within frame joints is advanced, and the relative issues are also discussed. The beam bar slippage model suggested is convenience to the elasto plastic dynamic response analysis of whole reinforced concrete structures.
    22  Epigenetic Reformation of Rock Mass in Dam Area of Xiluodu Hydropower Station
    SHEN Jun hui ,  WANG Lang? sheng ,  LI Tian bin ,  CHEN Wei? dong
    2003, 26(1):83-86. DOI: 10.11835/j.issn.1000-582X.2003.01.022
    [Abstract](603) [HTML](0) [PDF 381.81 K](269)
    Abstract:
    By investigating the space development rule of the epigenetic deformation and fracture trace and the combination pattern of epigenetic structure in dam area of Xiluodu hydropower station, the formation mechanism of epigenetic reformation is discussed in conjunction with the analysis of geologic physiological evolvement mechanism. Slaty rock mass structures which being made up of flat faults have played important role in controlling epigenetic reformation. The typical combination pattern of epigenetic structure is formed from steep dipping and flat faults. It is very important for understanding the feature of valley rockmass structure.
    23  Accumulation and the Harm of POPs to Organisms Lived in Lakes
    ZOU Xiao? bing ,  CHEN Li? juan ,  ZHENG Zhe? gen ,  MENG Gang ,  PENG Bi? xian
    2003, 26(1):87. DOI: 10.11835/j.issn.1000-582X.2003.01.023
    [Abstract](788) [HTML](0) [PDF 541.25 K](198)
    Abstract:
    The recent works about the accumulation and the harm of persist organic pollutions (POPs) to organisms lied in are widely distributed in lake ecosystem, transferred and biomagnified from prey to predator through pelagic and benthic food web, accumulated in high lipid organ, and increasing concentrations with the increasing of lipid content, age and body length. Until now, the present of POPs in lake ecosystem still has harmful effects to aquatic organism of lakes and can transfers to people through eating fishes from lakes and has some negative effects to human health.
    24  Pressure Distribution of LFG in a Landfill with Vertical Extraction System
    PENG Xu? ya ,  YU Yi ,  LIU Guo? tao
    2003, 26(1):92-95. DOI: 10.11835/j.issn.1000-582X.2003.01.024
    [Abstract](641) [HTML](0) [PDF 286.81 K](216)
    Abstract:
    In present engineering practice of landfill gas pollution control and its recovery, technical parameters such as extraction flow and radius of influence of a extraction well must be determined by field tests. A mathematical model for LFG migration under a vertical extraction well is established, which comprehensively reflects affects of several parameters including LFG generation rate, extraction flow, air permeability, buried depth of a extraction well and features of the cover layer. By using the model, pressure distribution of LFG around a vertical extraction well in a landfill can be calculated, the radius of influence of the well can also be determined.
    25  A Review on Medical Waste Management and Treatment in Chongqing Three Gorges Region
    HUANG Ben sheng ,  LI Xiao? hong ,  WANG Li? ao ,  LIN Jian wei
    2003, 26(1):96-99108. DOI: 10.11835/j.issn.1000-582X.2003.01.025
    [Abstract](761) [HTML](0) [PDF 421.30 K](281)
    Abstract:
    Medical waste ,belonging to one of top-ronking toxic wastes, should be safely deposed of. The characteristics and harmness of the medical wastes are introduced, and the practical status of medical wastes in Chongqing three gorges region, including waste management and disposal methods, is investigated. Because of the special characteristics of the waste, the paper proposes some measures for managing and separate collection and treatment in the region, including separate collection, sealed transportation, pretreatment, incineration and safe landfill, so that the ecological environment and water resource can be protected from pollution in the Three Gorges region.
    26  Algorithm of Cutter Machining Position during Numerical Controlled Last Carving
    ZHAO Jie ,  TAO Gui? bao ,  ZHANG Yi
    2003, 26(1):100-103. DOI: 10.11835/j.issn.1000-582X.2003.01.026
    [Abstract](936) [HTML](0) [PDF 302.08 K](223)
    Abstract:
    Numerical control last making machine is a machine that is used to process shoe last. A new principle of numerical control machining shoe last is put forward aiming at the deficiency of current carving last system. On the basis of the principle, the algorithm of cutter machining position during numerical controlled carving last is analyzed in detail. The complex problem of the calculation of cutter machining positiion is resolved by applying spherical milling cutter that is often used in machining free_curve surface today and taking account of practical situation of the shoe last_making machine. At the same time, the calculation of cutter machining position is realized by program using Visual C++6.0. As a result, the calculation time of cutter machining position is reduced greatly and the efficiency of design is improved. Moreover, the process of carving last is agile and precision of carving last is ensured.
    27  A Review of Recent Advances in Research and Development on Vehicle Semi-Active Suspension Systems
    FANG Zi? fan ,  DENG Zhao? xiang ,  ZHENG Ling ,  SHU Hong? yu
    2003, 26(1):104-108. DOI: 10.11835/j.issn.1000-582X.2003.01.027
    [Abstract](1095) [HTML](0) [PDF 481.92 K](305)
    Abstract:
    Based on the systems engineering theory, this paper reviews the trend of researches and developments on vehicle semiactive suspension systems, analyzes states of researches on electrorheological fluids and magnetorheological fluids material,and puts forward semi_active suspension sytems based on magnetorheological fluids damper. On the basis of summing up existing methods for vibration control on semi_active suspension systems, emphases are put on the discussion of aplication of PID control. linear optimal control,adaptive control and intelligent control on the semi_active suspension systems. The compound control strategy is put forward based on the skyhook damping control theory, fuzzy control theory and adaptive control theory. Moreover, the integral idea about the research and development of semi_active suspension is based on MR damper,and discusses some theories and applied problems deserving research.
    28  Research on Pattern Recognizing Technique for Immunity of Blood Cells
    LIU Guo? xiang ,  GUO Yong? cai ,  GAO Chao ,  XU Jia? hong
    2003, 26(1):109-111146. DOI: 10.11835/j.issn.1000-582X.2003.01.028
    [Abstract](641) [HTML](0) [PDF 461.27 K](149)
    Abstract:
    This paper gives a new technique of automatically recognizing for immunity in pharmacological experiment. The realization of automatization of pharmacological experiment is very important and widely needed in pharmacology research and medical diagnosis. At the first, the paper introduces the system component and procession. The microscope image with complicated background is segmented. To improve the recognition speed and accuracy of the system, a way of dispatching image and multiprocessing for isolated cell is presented. The parameters of blood cells are obtained automaticly. The testing shows that the deviation of obtained pharmacological parameter doesn't exceed.
    29  Realization of Engineering Change in PLM System
    WAN Ling ,  GUO Gang ,  DAI Hong
    2003, 26(1):112-115. DOI: 10.11835/j.issn.1000-582X.2003.01.029
    [Abstract](1084) [HTML](0) [PDF 371.01 K](1150)
    Abstract:
    It is pointed that the main reasons of engineering change including the shortcoming of the product,the wrong design,the improvement of the product structure,the change of the customers' requirement,the quality of the product,the condition change of the product,etc.. All the factors and their relations related to engineering change management are analyzed. Such factors as the changing process and the product lifecycle management are discussed in detail. After analyzing the relation between engineering change management and product lifecycle management, the object of engineering change management and its difference is put forward. The basic aim of engineering change management is to develop change ratio of products with lower cost and less error. It is argued that effective product lifecycle management is fundamental to engineering change management. A model of implementation of engineering change management is provided according to the previous analysis.
    30  New Requirement of Modern Enterprise to PDM
    DAI Hong ,  WANG Ning ,  XU Zhong? jun
    2003, 26(1):116-118. DOI: 10.11835/j.issn.1000-582X.2003.01.030
    [Abstract](605) [HTML](0) [PDF 260.01 K](1009)
    Abstract:
    In modern society, in order to make full use of information, enterprise not only communicates with interior, but also with the other enterprise. The old PDM (Product Data Management) system can not meet the requirement of enterprise in functions and ranges of management. To retrieve product data easily, the modern enterprises need to store product lifecycle information. At the same time, it is also necessary to expand the function of PDM, in order to share its network information, meet its requirement of collaborating design and make suppliers and partners expediently take part in the management of product data. Based on development of the PDM, this paper expatiates how to expand the old PDM for the modern enterprise.
    31  Interaction Mechanism between MgO-C Based Refractory and Slag Containing Titania
    XU Yuan ,  PAN Yuan ,  LIU Qing? cai ,  CHEN Deng? fu ,  BAI Chen? guang ,  LIU Che? yu ,  XU Chu? shao
    2003, 26(1):119-121. DOI: 10.11835/j.issn.1000-582X.2003.01.031
    [Abstract](491) [HTML](0) [PDF 335.28 K](1295)
    Abstract:
    镁碳质耐火材料是一种被广泛应用于工业生产中的碳复合耐火材料，在实际应用过程中它具有良好的性能，特别是抗渣性能。采用浸渍法研究含钛熔渣（TiO22％-30％）与镁碳质耐火材料间的相互作用规律。通过SEM、X-RAY衍射和能谱等技术手段，分析了倪关后耐火材料的微观组织结构和物相组成的变化，提出了含钛熔渣中镁碳质耐火材料的倪机理。熔渣中氧化物的脱碳和熔渣对耐火材料的渗透是耐火材料蚀损的主要原因，其结果是由耐火材料变质层形成的。
    32  A Novel Adjustable Peterson Coil
    LIU He ping ,  DENG Li ,  JIANG Yu ,  RAN Li ,  YE Yi? lin
    2003, 26(1):122-125. DOI: 10.11835/j.issn.1000-582X.2003.01.032
    [Abstract](829) [HTML](0) [PDF 321.86 K](1249)
    Abstract:
    The paper presents a novel continuously adjustable Peterson coil. If it is used in the system of neutral point grounding through Peterson coil, not only the high price can be reduced and the complicated problems can be solved of which the high voltage inductance controlling systems, but also advantages of the system of neutral point grounding though Peterson coil can be shown. It is introduces that how adopts low voltage thyristors for continuing adjusting inductance of the Peterson coil of which the voltage level ranges from 6 kV to 66 kV. This paper discusses the formula of calculating the inductance variable ranges and the harmonic currents which presents stable harmonic current under the phase controlled mode also. The theory of the designing coil is verified by the Saber simulation and practicality experiment.
    33  An Experimental Investigation of Condensation Heat Transfer of HC600a-Oil Mixture in a Horizontal Micro-fin Tube
    LONG Jian you ,  TONG Ming? wei ,  CHEN Li
    2003, 26(1):126-129. DOI: 10.11835/j.issn.1000-582X.2003.01.033
    [Abstract](619) [HTML](0) [PDF 332.40 K](1136)
    Abstract:
    Experimental study of condensation heat transfer of HC600a-oil mixture in a horizontal micro fin tube is performed to investigate the inflence of oil percentage, saturated pressure and mass flux on condensation heat transfer.The empirical correlation according to this study is well correlated by the experimental data. By comparing with other refrigerants, HC600a has no inflence on ozone depletion and better heat transfer characteristcs than CFC12 and HCFC134a. It is a promising substitute for CFC12.
    34  Advanced Research on Pharmacology Value of the Extracts of Ginkgo Biloba Leaves
    SHAO Ji? ping ,  WANG Bo? chu ,  CHEN Xin ,  DUAN Chuan ren
    2003, 26(1):130-134. DOI: 10.11835/j.issn.1000-582X.2003.01.034
    [Abstract](820) [HTML](0) [PDF 505.43 K](2224)
    Abstract:
    In these years, medicine value and clinical treatment value of extracts of the gmkgo biloba leares are studied deeply on home and abroad. With the growing development in the chemical inspect and chinical application, there are so many reports in domestic and abroad about the preparation technics, constituents analyse, pharmacological effects, toxicological experiments and clinical trials of ginkgo biloba leaves. There are kinds of flavonoids and terpenoids lactone in it, which have obrione protection and sechrity allepted by people in the world. A extensire prospect for application is manifested. The research progress of pharmacological effects of extracts of gmkgo bilobal. is summarized.
    35  Enterprise Resouce Planning and the Data Warehouse
    HUANG Jun ,  LI Chuan zhao ,  GUO De? hong ,  CHENG Sheng
    2003, 26(1):135-137. DOI: 10.11835/j.issn.1000-582X.2003.01.035
    [Abstract](632) [HTML](0) [PDF 291.70 K](968)
    Abstract:
    The traditional Enterprise Resouce Planning system belongs to the typical on-line transaction processing (OLTP) system. It just offers a management platform where enterprise policy-making level and staff can make decisions, but it can not offer necessary information satisfied for making decisions directly. The traditional ERP system is a very good back-office management system, but the developing enterprises need the ERP system with the front-office management function at the same time. The traditional ERP system integrated with data warehouse can realize the function change greatly because DW can remedy the limitations of the traditional ERP system. DW, integrated with the traditional ERP system in the way of system structure, can analyze the data drew from the ERP system, and deposit these sample data and analyzed results into itself so that users can inquire these later. It can help users find the potential value of data accumulated in the traditional ERP system, and then it can help enterprise gain extensive competition advantages for a long time.
    36  Contingent Claims Analysis of Valuation of Risky Debt with Bankruptcy Costs
    CAO Guo? hua ,  HUANG Wei
    2003, 26(1):138-141. DOI: 10.11835/j.issn.1000-582X.2003.01.036
    [Abstract](742) [HTML](0) [PDF 316.85 K](999)
    Abstract:
    Research on valuation of corporate risky debt is given when bankruptcy costs are taken into account. Bankruptcy costs are expenditures of enterprise that get into bankruptcy, as a result, enterprise asset value is reduced, and debt value is reduced too because bondholders only receive asset value deducted from bankruptcy costs. Differential equation which risky debt value follows is given and a model about infinite maturity debt is obtained. By applying contingent claims pricing and stochastic calculus methods, the paper derives a risky debt value formula, this formula can illustrate the effect of investment policy and dividend policy on risky debt value. At last the results are comporred with results of Merton and Black and it is found that our results improve Merton and Black's.
    37  Division of Labor and Allocation of Property Rights with Transaction Costs
    XIANG Rui
    2003, 26(1):142-146. DOI: 10.11835/j.issn.1000-582X.2003.01.037
    [Abstract](691) [HTML](0) [PDF 404.65 K](966)
    Abstract:
    This paper addresses the question produced when the control over nonhuman resources affect division of labor based on specialization. In a simple economy with two final goods and a nonhuman resource as an initial input of production, it is proved by using the new classical microeconomic method that readjusting the initial allocation of property rights can help push the division development of labor, although the ex post transaction costs will increase. The model shows that it is an improper division of labor that the Government directly involves itself in production by founding state owned enterprises, and these enterprises at least should withdraw from competitive industries.
    38  Analysis of Third Party Logistics Integrated Profits
    ZHOU Ming ,  CHENG Yong? sheng
    2003, 26(1):147-149. DOI: 10.11835/j.issn.1000-582X.2003.01.038
    [Abstract](655) [HTML](0) [PDF 283.35 K](981)
    Abstract:
    As specializing third party logistics, logistics companies do not participate in the goods' dealing. They get profits from serving customs. However ,they hunt for not only general profits, but integrated profits. This article analyses the source, character and allotment of integrated profits from the point of view of economics. At last, the article points out that the logistics companies should progress to logistics integrated logistics providers.
    39  Correlation between Financial Development and Industrial Growth in China
    LIAO Cheng lin ,  WU Kai qian CHEN Jing lin
    2003, 26(1):150-153. DOI: 10.11835/j.issn.1000-582X.2003.01.039
    [Abstract](744) [HTML](0) [PDF 327.97 K](169)
    Abstract:
    A brief introduction of literature on the nexus of financial development and growth in the economy is given first. In the light of traditional thinking over the nexus of financial development and growth, an empirical analysis,by the method of SURE in the framework of two sector model, of the causality of China financial development and industrial growth is carried out covering the relative data since the adoption of reform and open policy.The externalities of finance over industry and industry over tinance show that the supply leading version is prevalent in the chines economy. Finally the policy implication is suggested.
    40  SCI Statistic Analysis of Academic Articles about Chongqing University
    LI Jun? hong ,  LI Yu? lian ,  GUO Ji? an
    2003, 26(1):154-157. DOI: 10.11835/j.issn.1000-582X.2003.01.040
    [Abstract](947) [HTML](0) [PDF 372.66 K](286)
    Abstract:
    As one of the three greatest retrieval systems of the world, SCI is an important factor which refers to the capabilities of academic and scientific research for an institution. Based on the network database recorded by ISI Web of science, the scientific papers recorded and cited by SCI database in each collage of Chongqing University during 1984-2001 are analyzed statistically. Some suggestions are presented in order to increase the recorded and cited numbers of SCI papers for Chongqing University. It is meaningful to enhance the University's fundamental research, to flourish academic competing atmosphere and to promote the Unviersity's academic positon.

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