Table of Content

    25 May 2009, Volume 30 Issue 3
    Mathematics
    Numbrical Solution of Fredholm Integro-Differential Equations by Using Legendre Wavelets
    SHI Zhi, DENG Zhi-Qing
    journal6, 2009, 30(3):  1-5. 
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    Legendre wavelets method is used to solve the first-order and the second-order linear Fredholm integro-differential equations.Legendre wavelet approximation is untilized to reduce the integro-differential to the algebraic equations.Illustrative examples are included to demonstrate the validity and applicability of the technique.
    Properties of Boolean Determinant
    LI Hong-Gang, ZENG Ling-Huai
    journal6, 2009, 30(3):  6-10. 
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    Some different  concepts of determinant are instructed in Boolean algebra.The properties of  det1(A) and det2(A) are discussed.Some results,which have not been obtained in commutative field are obtained in Boolean algebra.
    Muliple Positive Solutions of Fourth Order Singular Differential Equation with Boundary Counditions
    WANG Ying, SUN Qin-Fu, LI Cui-Lan
    journal6, 2009, 30(3):  11-16. 
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    By using the fixed point index  theory,the author  discusses the existence of positive and mutiple positive solutions  of fourth order singular differential equation with  boundary counditions,and obtains the results with the operator equation x(t)=λ Ax(t),when λ in some interval.The results significantly extend and improve many known results even for non-singular cases.
    β Estimate in Coefficient Function of Adaptive Variable Coefficients EV Model
    ZHOU Li, ZHANG Zhi-Shun, XU Jian, LIU Wan-Rong
    journal6, 2009, 30(3):  17-18. 
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    Starting  from  the adaptive variable coefficients EV model in general case,the authors  discuss a special form of adaptive variable coefficients EV model,and then use MATLAB to verify the estimated result of one-step iterative.
    Convergence Analysis of the Parallel Multisplitting GAOR Method for Linear Complementarity Problem
    DAI Ping-Fan, LI Yao-Tang
    journal6, 2009, 30(3):  19-21. 
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    A class of parallel multisplitting generalized AOR (PMGAOR) methods is established for solving the large sparse linear complementarity problem,and the global convergence is proved for the H-matrix.
    Exact Solutions Kaup-Kupershmidt Equation
    FU Hai-Ming, DAI Zheng-De
    journal6, 2009, 30(3):  22-23. 
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    The algebraic method,based on the symbolic computation,has been applied to study new traveling wave solutions for Kaup-Kupershmidt equation by means of Epsilon package in Maple.More new explicit travelling wave solutions are obtained,which contain  periodic solutions of Jacobi elliptic function,hyperbola function and triangular periodic solutions.
    Oscillation of One Kind of Second-Order Delay Dynamic Equations on Time Scales
    LI Tong-Xing, HAN Zhen-Lai, SUN Shu-Rong
    journal6, 2009, 30(3):  24-27. 
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    By means of Riccati transformation and time scales,this paper establishes some oscillation theorems for the second-order nonlinear delay dynamic equation on time scales.
    Geometric Average Asian Option Pricing from the Price of Stock Dividends-Payment
    GUO Na, LIU Xin-Ping
    journal6, 2009, 30(3):  28-30. 
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    Under the circumstances of time-dependent interest rate r(t)  of riskless asset,dividend payment of risk asset,time-dependent expected return μ(t),volatility σ(t)  and dividend yieldρ(t),the authors use martingale to establish a pricing model of geometric Asian options with floating strike price.
    Similarity Analysis Based on Chaos Game Representation of DNA Sequence
    SHI Long, HUANG Hai-Lan
    journal6, 2009, 30(3):  31-34. 
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    Based on chaos game representation of DNA sequence,the authors obtain a 6-component vector whose elements are the leading eigenvalues of corresponding measure matrices to represent the DNA sequence.The correlation distances among introduced vectors are applied to compare the similarities of the coding sequences of the first exon of beta globin gene of 11 different species.The results are basically coincident with their evolutionary relationship.
    Some Developments and New Researches in Mathematical Analysis
    ZHANG Yi-Fang
    journal6, 2009, 30(3):  35-39. 
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    First,the symmetry of n-variables in mathematical analysis,and the symmetry and unification between differential and integral are discussed.Then the rank n of calculus is extended to fraction and various number-systems.From this some new results are obtained.It may combine the fractal and complex-dimension.Moreover,the significance of these new researches is also searched.
    Computer
    Working Mode and Implementation of Constructing Midele Ware Based on JOBC
    JIANG Feng-Lian, GUO Hua-Long, GONG Chang-Bin
    journal6, 2009, 30(3):  40-43. 
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    Aiming at heterogeneous data transmission in university educational management systems,the authors put forward a working mode and its implementation of constructing middle wave based on JDBC:The middleware is constructed according to the actual business of educational management system,and the technology of database connection pool is introduced.This scheme deals with the inefficiency which results from a large amount of data access at the same time;thus,it improves the data access efficiency of the entire system,and has high independence,portability and reusability.
    Application of Genetic Algorithm for  Course Arrangement System inElementry and High Schools
    WANG Gai-Fen
    journal6, 2009, 30(3):  44-47. 
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    This paper analyses the mathematic model of time tabling problem in elementry and high school,and designs a data structure of gene and some evaluating functions of the goals.A solution to time tabling problem via genetic algorithm is provided.The validity and reliability are proved by experiments.
    Software-Robot’s Realization for E-Commerce Order Real-Time Processing
    LI Yu-Min
    journal6, 2009, 30(3):  48-51. 
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    The development of e-commerce faces many problems,among which,real-time man-machine interaction (online negotiation) is the most important.Therefore,according to the working mechanism of ALICE,applying the technology of JAVA,PROGRAM D and AIML,and utilizing database technology,knowledge theory,inference rules and inference strategy,a man-machine interaction software-robot with order real-time processing is realized.This research is beneficial  to widen the applications of ALICE,provide a new way for real-time online negotiation in E-commerce orders,and release from partial work of order-processing.
    Physics and electronics
    Advances in Low-Ttemperature Fracture of Materials
    LIU Jian-Lin, SONG Zuo-Ling, ZHU Sheng-Hu, XUE Shi-Feng
    journal6, 2009, 30(3):  52-56. 
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    Low-temperature fracture of materials is a frontier topic in scientific research,which is important for engineering applications.In this paper,the low-temperature fracture and investigation advances at home and abroad are reviewed.The new experimental technology,new theory and new materials,such as nano-materials about low-temperature fracture are discussed in detail.
    Study on Li Doped WO3 Electrochromic Thin Films byOrthogonal Design
    MA Shun-Hua, TIAN Li, TANG Shi-Hong
    journal6, 2009, 30(3):  57-61. 
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    The property of pure WO3 electrochromic thin films is no longer  adaptable to practical application.In the area of improving the property of WO3 thin films,doping has been the most important event now.Our study aims at using lithium acetate as Li doping sourse,and it is proved that the property of WO3 thin films by doping Li is improved a lot.How much Li should be doped is discussed by orthogonal design.
    Algorithm  and Its Realization of Fault Location for Nonlinear Analog Circuits Based on BP Neural Network
    XIE Hong, WEN Zhi-Yong, HE Yi-Gang, JING Jian-Hua
    journal6, 2009, 30(3):  62-65. 
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    A fault location method for nonlinear circuit by taking the cores of  Volterra series in frequency domain as the fault characters is proposed.Via calculating the frequency cores of Volterra series in frequency domain for the response of usual fault states and feeding them into BPNN as the fault features,the fault dictionary is built.The fault location for nonlinear analog circuit is completed by BPNN classifying the Volterra frequency cores tested from the nonlinear network.The paper presents the unified recursive computing formulae for frequency cores,an improved BPNN algorithm and its program.At last,an example of this method is given.
    Signal Detection of Conduction Interference Based on Wavelet Packet Decomposition and Virtual Instrument
    CAO Cai-Kai
    journal6, 2009, 30(3):  66-70. 
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    Wavelet packet decomposition( WPD) can not only detect integral harmonics  of non-stationary signal,but also detect non-integral harmonics of it;and because  wavelet transformation singular is very sensitive to signal of the strange point,it can be used to follow the conduction interference signal in switches power supply.In virtual instrument( VI) LabVIEW 6.i software workbench,algorithm design based on wavelet packet decomposition  is developed,combined with virtual instrument (VI) program,which realizes real-time detection system of the conduction interference signal in switches power supply.The system presented here has the measurement functions  following:signal-noise separation,power spectrum of conduction interference,original vibration wave with noise and noise wave etc.The result shows that that method is feasible and effective.
    Information and Engineering
    Development of High-Precision Temperature Measurement and Control System Based on Pt100 Platinum Resistance
    WANG Long
    journal6, 2009, 30(3):  71-73. 
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    Industrial production at  certain temperature conditions will proceed in accordance with the predetermined direction,so temperature control is to ensure normal production process.The author introduces a high-precision temperature measurement and control system based on Pt100 platinum Resistance.Pt100 platinum resistance is used as temperature sensor in the system,median value average filtering is used to eliminate the sampling value of the deviation,successive approximation method to eliminate the non-linear of temperature control system,and PID algorithm to control executing agency through the implementation of PWM.Thus,in -200 ~ 601  ℃,0.1  measurement resolution and ± 0.5 ℃ control precision are ensured.
    Application Of Weighted Least Square Estimates In Navigation Chat Work
    YANG Bin
    journal6, 2009, 30(3):  74-76. 
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    Due to the shortcoming of electronic chart displaying and information system in navigation practice,a kind of electrical chart work is put forward in this article.The method of weighted least square estimates (WLSE) is modeled and demonstrated to be used in fixing by cross bearings.Matlab simulation calculation shows that some weakness should be noticed to benefit the hope that navigation chart work can be done on electronic chart displaying and information system.
    Calculation of Gear Corner Contact Meshing Impact Rate
    TANG Qian-Peng, CHEN Yan
    journal6, 2009, 30(3):  77-79. 
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    The process of gear entire corner contact is analysed.Ascertaining the equivalent point position of the starting point of corner contact on the meshing line,the radius from corner contact to gear center and computation of both of the gears’ load angle of the corner contact point,the authors solve the calculating method of corner contact impact rate.
    Finite Element Analysis of Drive Axle Housing of the Heavy-Duty Truck
    LI Wan-Min, LI Yan-Bin
    journal6, 2009, 30(3):  80-82. 
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    The finite element software ANSYS is used in modeling,calculation and analysis for the drive axle.By using the technical means of error estimation,a high precision finite element model is achieved,which can provide a reference to reduce troubles in the drive axle housing.
    Chemistry and chemical engineering
    Synthesis and Characterization  of  Praeseodynium-Porphyrine by Solid State Reaction
    MA Ming-You, XIONG Li-Zhi, XIAO Zhuo-Bing
    journal6, 2009, 30(3):  83-85. 
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    Rare earth porphyrine complex,praeseodynium-porphyrine,is synthesized by solid state reaction,and electronic absorption spectra of porphyrine and praeseodynium-porphyrine is studied.The influence of solvent features on electronic absorption spectra is discussed.The results show that the praeseodynium-porphyrine has the highest photo stability in  CH3COCH3 and CHCl3 solvent,which is a good photosensitizer.
    Simultaneous Production of Electrolytic Manganese and Manganese Dioxide
    CHEN Shang, XIAO Zhuo-Bing, LIU Jian-Ben, YIN Yan-Lin
    journal6, 2009, 30(3):  86-90. 
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    Ti electrode coated with MnO2 were prepared by pre-electrolysis,Mn(NO3)2 pyrolysis and pyrolysis-electrolysis method respectively,and it was employed as anode for production of electrolytic manganese dioxide,in which stainless steel was used as cathode and MnSO4-H2SO4 as electrolyte.The impact of current density,temperature and acidity on current efficiency was investigated.The results show that anode prepared by pyrolysis-electrolytic process is suitable with its strong passivation resistance,compact surface as well as hard adhesion between layers.Simultaneous electrolytic process for the production of electrolytic manganese and manganese dioxide were carried out successfully,in which salt bridge,porous porcelain plate and glass fabric were employed as materials for diaphragm cell,Ti-MnO2 as anode,polished stainless steel as cathode,respectively.The electrolytic manganese was obtained at cathode and manganese dioxide at anode;the respective current efficiencies were over 90% and 60% under suitable conditions.
    Preparation and Electrochemical Properties Analysis of CuO-Doped Nano-SnO2 Powders as Anode Materials for Lithium Ion Batteries
    HE Ze-Qiang, XIONG Li-Zhi, MA Ming-You, WU Xian-Ming, XIAO Zhuo-Bing
    journal6, 2009, 30(3):  91-94. 
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    CuO-doped nano-SnO2 powders were prepared by chemical coprecipitation method using SnCl4·5H2O,NH3·H2O,and Cu(NO3)2·3H2O as raw materials.The powders were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM).The electrochemical properties of CuO-doped nano-SnO2 powders and undoped SnO2  powders as anode materials of lithium ion batteries were investigated comparatively by charge-discharge curves,cyclability and AC impedance.Results show that SnO2 -CuO nano composite powders with average particle size of 87 nm could be obtained through chemical coprecipitation method.The structure of SnO2  was not changed,but the average particle size of nano-SnO2  decreased due to the introduction of CuO.CuO-doped nano-SnO2  powders show a reversible capacity of 752 mA·g-1 and better cyclability compared with undoped nano-SnO2 .The capacity retention rate of undoped nano-SnO2  and CuO-doped nano-SnO2 powders is 93.6% and 92.0% at 0.1 C rate,respectively,which suggests that introduction of CuO in SnO2  can improve the cyclability of nano-SnO2 .
    Preparation of High-Purity Bismuth by Reagent Deleadization with Vacuum Distillation
    XIONG Li-Zhi, DAI Yong-Nian, YIN Zhou-Lan, CHEN Qi-Yuan
    journal6, 2009, 30(3):  95-101. 
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    The feasibility of separation of impurities in refined bismuth and reagent deleadization with vacuum distillation is studied theoretically.Experimental studies on reagent deleadization were carried out in vacuum and the influence of various factors,including amount of reagent,distillation temperature,vacuum degree and distillation time on the deleadization are inspected;then an optimal technical condition is achieved to be the following: as to sulphur deleadization,addition of sulphur is about 0.02 g/g of refined bismuth,at distillation temperature of 1 073 K,lead content in refined bismuth decreases from 3.0×10-5 to 2.1×10-7,and the deleadization rate is about 99.3%;as  to chloridized deleadization,addition of copper chloride is about 0.06 g/g of refined bismuth,at distillation temperature of 1 023 K,lead content in refined bismuth decreases from 3.0×10-5 to 2.4×10-7,and the deleadization rate is about 99.2%.Other impurities in refined bismuth can be also removed effectively under certain conditions,the content of bismuth has reached the level of “99.999%”with vacuum distillation.
    Preparation and Characterization of  Li1+xAlxTi2-x(PO4)3(x=0~0.4) by Sol-Gel Method
    LI Run-Xiu, WU Xian-Ming, CHEN Shang, HE Ze-Qiang
    journal6, 2009, 30(3):  102-104. 
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    Solid electrolyte Li1+xAlxTi2-x(PO4)3(x=0~0.4) was prepared using CH3COOLi·2H2O,Al(NO3)3·9H2O,(NH4)H2PO4,Ti(OC4H9)4 as raw materials by sol-gel technique.The test results show that Li1+xAlxTi2-x(PO4)3 prepared by sol-gel has better cystallintiy.Crystallinity and structure have little difference between the powder and sintered pellet.The ionic conductivity increases first and then decreases with the increase of Al3+ content.When doping amount is 0.3,the ionic conductivity is higher.The change of activation energy is contrary to that of the ionic conductivity.
    Medical Science
    Research Advancement of the Relationship Between Genic Polymorphism of Helicobacter Pylori and Pathogenicity
    LI Xue-Feng, LU Fang-Gen, ZHOU Ming-Huan
    journal6, 2009, 30(3):  105-108. 
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    Hp infection is one of the most common bacterial infection in human being,and the digestive tract is the major part of Hp infection.The genome structure of Hp has much variation,so  the mutation of Hp gene basic group causes genic polymorphism of Hp,and different gene types of Hp bring about different influences to morbidity and clinic outcomes of distinct  digestive disease.Detection of genic polymorphism of Hp has important significance for discovery,prevention,and cure of the correlated disease of Hp.
    Sports
    National Traditional Sports Discipline System Construction Under the Guidance of  the Scientific Concept of Development
    LIU Shao-Ying
    journal6, 2009, 30(3):  109-112. 
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    The scientific concept of development has great guiding role and significance for the research of national traditional sports.The precondition and basis for the sustainable development of national traditional sports is to insist on the guiding ideology which emphasizes development being the first task,people-oriented concept and comprehensive,harmonious,sustainable development.The effective ways to achieve sustainable development of national traditional sports are as follows:to break through the limitation of evaluating national traditional sports within the range of pedagogy,to cultivate and improve talent quality,to speed up the course system adjustment of national traditional sports,and to establish multi-level,multi-demand,multi-type training bases.
    Several Problems Impacting Long-Term Development Strategy of Physical Education in Schools
    WU Xi-Ping
    journal6, 2009, 30(3):  113-116. 
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    The operation and management of physical education in schools will influence and determine the long-term development of physical education,and also relate to the efficiency,quality and level of physical education.So a new management mode of school physical education not only means the technical change,but also a strategic adjustment which involves optimization of management structure and mode,renewal of management  value,and selection of strategy.
    Sports Biomechanics Features of  Forward and Backward Whip-Kicking in Free Combat
    CAO Hua, HAI Gang
    journal6, 2009, 30(3):  117-119. 
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    With the  experimental instrument——Motion Analysis System,this article presents a contrastive analysis of forward  and backward whip-kicking,pointing out the advantages and disadvantages of the two technics,in order that  some theoretical evidence will be provided for technical training concerned,and the scientific training of whip-kicking technics be enhanced.
    Economics
    Origins of Formation Mechanism of Investment Behavior of Home Bias
    LIU Feng-Gen
    journal6, 2009, 30(3):  120-125. 
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    Empirical study shows that investors prefer home stock.There are both institutional factors and behavioral factors which
    cause the undiversified inverstment.Traditional finance theory suggests that capital controll,risk hedging,information asymmetry and trade costs,etc may arouse the home bias.But the behavioral finance theory shows that familiarity,language and culture,proximateness,relatively optimistic,etc,can explain the home bias.
    Management
    Subsequent Advantages of China's Private Enterprises——Game Analysis of Imitative of Innovation and R & D Innovation
    HE Xiao
    journal6, 2009, 30(3):  126-128. 
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    Having developed rapidly,China’s private enterprises play an extremely important role in China's economic development.Through the analysis of private enterprises in terms of technology,capital and labor and macro-policy support  as the subsequent advantages,the author uses game theory to analyse the  disadvantages in capital,technology and human resources aspects of China’s private enterprises.It is pointed out that China’s private enterprises should make full use of imitative innovation to  exert subsequent advantages.
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