Table of Content

    15 July 2005, Volume 26 Issue 3
    Mathematics
    A Conjecture Concerning Trigonometric Sums
    LE Mao-Hua
    journal6, 2005, 26(3):  1-2. 
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    Let n be a positive integer and  p=4n+1 be a prime.The author proves that there exist n positive integers ki(i=1,2,…,n) which satisfy ki≤2n and ni=1cos(2ki-1)/p=(1+p)/4.
    Three Species Predator-Prey Singularly Perturbed Robin Problems for Reaction Diffusion System
    WANG Geng
    journal6, 2005, 26(3):  3-7. 
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    The nonlinear three species predator-prey singularly perturbed Robin initial boundary value problems for reaction diffusion systems are considered.Under suitable conditions,using the stretched variable and theory of differential inequalities,the existence and asymptotic behavior of solution for initial boundary value problems are studied and uniform validity of the solution is obtained.
    Existence and Uniqueness of the Solution to the Equations for Dynamic Membrane Shells
    XIAO Li-Ming
    journal6, 2005, 26(3):  8-12. 
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    The author proves the existence and uniqueness of the solution to the equations for dynamic membrane shells by Galerkin method.
    Estimates for Very Weak Solutions to Elliptic Equations
    ZHOU Shu-Qing, ZOU Rui-Biao, XIANG Zhan-Hong, CHEN Da-Xue
    journal6, 2005, 26(3):  13-19. 
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    Using a pointwise inequality for Sobolev functionsin terms of maximum function to construct a global Lipschitz continuous testing function and using Hardy’s inequality,the author obtains global estimates for very weak solutions to quasi-linear elliptic equation div A(x,Du)+B(x,u)=-div(|F|p-2F) satisfying certain conditions listing in the following.
    Strong Convergence Theorem of Iterative Sequence for a Family of Finite Asymptotically Quasi-Nonexpansive Mappings
    WANG Li-Ping, WEI Li, XIAO Zhuo-Feng
    journal6, 2005, 26(3):  20-22. 
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    This paper studies the iterative approximation problem of fixed point for a family of finite asymptotically quasi-nonexpansive mappings and quasi-uniform L-lipschitz operators and gives the sufficient and necessary condition for the Ishikawa iterative sequence with errors strongly convergent to common fixed point.
    Physics and electronics
    Development and Application of EDA Technique
    XIE Chang-Yan, LI Yi-Fu, PENG Wei-Shao, HE Yi-Gang
    journal6, 2005, 26(3):  23-26. 
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    This paper introduces the developing process,main contents and software system construction of electronic design automation(EDA) technique.The developable tendency of EDA technique and its application are also presented.
    Chemistry and chemical engineering
    Application of Fluorescence Spectrum in Pharmaceutical Analysis
    PAN Zu-Ting, GUAN Hong-Liang, YUAN Hua-Ping, LI Wei, CHEN Guo
    Journal of Jishou University(Natural Sciences Edition), 2005, 26(3):  27-34. 
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    This paper reviewed the progress of the fluorimetry in pharmaceutical analysis in recent years.The present situation of fluorescence spectrum for the reaction of medicine and biomacromolecules such as protein,nucleic acid was introduced in detail,including its mechanism.The future application is pharmaceutical analysis was foreseen.
    Economics
    Meaning of Accounting Elements in Institutional Economics
    WANG Yue-Wu
    journal6, 2005, 26(3):  35-38. 
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    Through the analysis of the variation of the economic value of accounting elements and decisive factors of the value,the author  points out that “historical cost” can not bring the real “authenticity” in an economic system that price is being changed constantly;and he gives a new explanation to the meaning of accounting elements basing on institutional economics and demonstrates that the common essence of the accounting element lies in “the value in future”.In order to give consideration to “useful decision making” in the value assessment of accounting elements and the easy using of “cost-effective principle”,he proposes that the bridge of “historical cost” and “future value” is “present value”.
    Doctoral Forum
    Experiment on Eliminating  Calcium and Magnesium During Preparation of Mn-Zn Ferrite Powder by Co-Precipitation Method
    ZHANG Bao-Ping, ZHANG Jin-Long, TANG Mo-Tang
    journal6, 2005, 26(3):  39-42. 
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    This paper studied the influence on elimination of calcium and magnesium by NH4F during the preparation of Mn-Zn ferrite precursor by coprecipitation.The results of experiments showed that the quantity of NH4F,time and temperature of reaction and pH were of obvious influence on elimination of calcium and magnesium.Under the best conditions——the volume fraction of 370.4 g·L-1 NH4F was 2.4×10-2,temperature was 90 ℃ and the reaction time was 1 h and pH was 3.5,the contents of calcium and magnesium in purified solution were 0.003 and 0.019 g·L-1 respectively, while the contents of calcium and magnesium in the precursor were 7.5×10-5 and 5.6×10-5,less than 10-4,so the precursor of Mn-Zn ferrite by coprecipitation was fit to be used to prepare high-quality product.
    Ruin Probability in Risk Model with Double Compound Poisson Processes by Diffusion
    HE Shu-Hong, ZHAO Jin-E, MA Li-Juan
    journal6, 2005, 26(3):  43-45. 
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    A double compound Poisson processes risk model by diffusion is considered.Applying martingale approach,the Lundberg inequality and the formula of the ruin probability are obtained,and the explicit formula of the ruin probability is also obtained in case of exponential claim amounts and exponential premium incomes.
    Evaluation on Fruit Quality of Pyrus Pyrifolia Cultivars Based on Standardization
    YANG Gu-Liang, HUANG Shu-Guang
    journal6, 2005, 26(3):  46-48. 
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    Based on standardization of eveluation factors,this paper sets up the syntnetic eveluation model of fruit quality of Pyrus pyrifolia cultivars.After being screened,Jumi,Maogong and Xingao are proved to be the fine cultivars.
    Effects of NaHSO3on the Photosynthesis and Its Application
    LIAO Fei-Yong, YE Hai-Yan, HE Ping
    journal6, 2005, 26(3):  49-52. 
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    The reviews summarize the effects of NaHSO3on the stoma,the content of pigments,the allocation of photosynthetic productions,photorespiration,and photophosphorylation.Yield and quality can be increased when the concentration and time of spring NaHSO3on the leaves are appropriate.
    Biological Invasion and Biodiversity Protection
    TANG Li
    journal6, 2005, 26(3):  53-55. 
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    After analysing the effects of biological invasion on the local biodiversity and its major ways and calamity mechanism,the author puts forward the measures to prevent biological invasion.
    Key disciplines
    New Methods for Judging the Generalized Sub-Diagonally Dominant Matrices
    HE Xiao-Fei, XIAO Fei-Yan
    journal6, 2005, 26(3):  56-59. 
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    The concept of the generalized sub-diagonally dominant matrices is given and  some methods for judging the generalized sub-diagonally dominant matrices and sub M-matrices are obtained.
    Characterization of LiMn1.8Co0.1Ni0.1O4Prepared by the Combustion-Assisted Soft Route
    XIAO Zhuo-Bing, MA Ming-You
    journal6, 2005, 26(3):  60-64. 
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    Lithium acetate,manganese acetate,cobalt acetate,nickel acetate,citric acid,and glycol being the raw anaterials,LiMn1.8Co0.1Ni0.1O4 powder was prepared by the combustion-assisted complexing method.The phase identification,lattice parameter and morphology were studied by X-ray diffraction and scanning electron microscopy.The electrochemical properties of LiMn1.8Co0.1Ni0.1O4 were carried out by A.C.impedance and galvanostatic charge-discharge experiments.The powders prepared under different conditions are of good crystallinity;the diffraction peak of X-ray is intensive and sharp.The capacity of LiMn1.8Co0.1Ni0.1O4 increases as the temperature rises.Compared with the original capacity,it decreases slighty;however,the cycling behavior improves after double doping.
    Synthesis of the Low Generation Dendrimers of Polyamidoamine
    PENG Xiao-Chun, PENG Xiao-Hong, ZHAO Jian-Qing, LIN Yu-Wei, WANG Qing-Tao
    journal6, 2005, 26(3):  65-68. 
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    Polyamidoamine (PAMAM) dendrimers from 0.5 generation to 4.0 generation were synthesized via the divergent method,and then PAMAM G3.5,PAMAM G4.0 dendrimers were thoroughly characterized by means of Fourier transform infrared spectroscopy,1H and 13C nuclear magnetic resonance.The factors which influence the synthesis of polyamidoamine dendrimers are also discussed.
    Day-Night Feeding Rhythm and Daily Feeds Intake Rate of Bufo Gargarizans Tadpole
    GONG Shuang-Jiao, MA Tao-Wu
    journal6, 2005, 26(3):  69-71. 
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    This paper deals with the day and night feeding rhythm and the daily feeds intake rate of Bufo gargarizans tadpole.The results indicate that day and night feeding shows an apparent rhythm.The peak index of fullness lies at 21:00 and 6:00,and the lowest index at 9:00 and 15:30.The daily feed intake rate is 12.28%.
    Mathematics
    Strengthening Form of Janic'’s  R R Type Inequality on the High Dimensional Simplex
    ZHANG Yao
    journal6, 2005, 26(3):  72-75. 
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    The strengthening forms of Janic''s R R type inequalities on the high dimensional simplex are given: 1≤i<j≤n+1a2ij/(rirj)≥n2(n-1)2(R/(nr))2/(n(n-1))≥n2(n-1)2,and the sufficient and necessary condition for the equalities is that Ω is canonical simplex.
    A Special Model for Insurance and  Financial Pricing
    REN Ye-Qing, ZHANG Hong-Yan
    journal6, 2005, 26(3):  76-78. 
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    A representation is established between financial prices and insurance premiums under the underlying risk model by using Fourier transform.
    Quantitative Relation Between Utility Indifference Pricing and the Investor’s Risk Attitude
    HU Song, YANG Zhao-Jun
    journal6, 2005, 26(3):  79-82. 
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    Using the theory of the utility indifference pricing,based on one special utility function,the author obtains the utility indifference pricing via the math model of foundation and solution and presents the quantitative relation between the utility indifference pricing and the risk attitude of the investor.
    Physics and electronics
    FDTD Simulation Band Gap of Two-Dimensional Square Cylinder Photonic Crystal
    TANG Bing-Shu, ZHOU Yan-Wei, XU Jian-Liang
    journal6, 2005, 26(3):  83-85. 
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    This paper applies finite difference time domain method to calculate transmission coefficient of two-dimensional square cylinder photonic crystal.The calculated results obviously show that band gap exists.Band gap width is related to Polarization of incident ray,cylinder’s index of refraction and the existence of defects.
    Computer
    Application of Neural Net in Project Finance Evaluation
    WEN Zhi-Yuan, CAO Le-Ping
    journal6, 2005, 26(3):  86-90. 
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    Man-made neural net BP algorithm is adopted to establish project finance evaluation model.Subordinated function of vague maths is used to describe evaluation index.The peak value and mean value of subordinated function are used to form studying sample and train the neural net.So that it will obtain the function of associative memory and make strategic decision to realize project financial evaluation to the sample index not appearing in the training.
    Method of Automatic Test Paper Formation on the Least Square Algorithm
    GONG De-Liang, YUAN Min
    journal6, 2005, 26(3):  91-94. 
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    The structure model of question bank is transformed to linear equations,and then,by the least square algorithm,the standards of taking out test questions and forming papers are obtained.Examples show that computerized automatic test paper formation can be realized and the consistence of selecting test questions can be guaranteed.
    Biological resources
    Roots Characteristics of  Resistance to Drought Stress in Brazilian Upland Rice IAPAR9
    WANG Zheng-Gong, HU Song-Ping, ZHOU Qing-Ming, ZHONG Yuan
    journal6, 2005, 26(3):  95-100. 
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    This paper studied the roots morphology mechanism of drought resistance of IAPAR9 by method of contrast study on strong and weak drought resistant ability of varieties of common rice,hybrid rice,and  upland rice.The results showed that the correlation was significant between the drought resistant ability of rice and its length,volume,and weight;IAPAR9 had a middle level of roots;both the number and area of vascular tissues in rice roots were decreased greatly under drought stress,but IAPAR9 could maintain larger growth than others while drought was serious (40% soil saturated water content) because the area of its vascular tissure was larger,which should be one of the substantial foundations for its good dronght resistant ability.
    Effects of the Extract of Epimedium Korearium Nakai on Immune Organs and Reproductive Organs in Female Gong Chickens
    PENG Xiao-Lie, SHI Jin-Xiao, LIAO Hui-Min
    journal6, 2005, 26(3):  101-102. 
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    Objective:To study the effects of the extract of Epimedium korearium Nakai on the indexes of immune organs and reproductive organ in female Gong chickens.Method:Perfusion was applied to 3-day-old chichens every day with different dosages,and indexes of immune organs and female reproductive organ were measured at 21-day-old.Result:Neither the cloacal bursa index nor the thymus index was affected (P>0.05),but the spleen index and the female reproductive organ index were increased (P<0.05).Conclusion:It suggests that forage containing the extract of Epimedium korearium Nakai is able to enhance the female chickens’ disease resistance and reproductive ability.
    Chemistry and chemical engineering
    Dissolubility of Black Mercury Sulfide by Chemical Thermodynamics
    LI Da-Tang, LIU Hong-Min, LIU Di
    journal6, 2005, 26(3):  103-106. 
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    The dissolubility of the black mercury sulfide in the solutions of the non-oxidative strong acid and alkali is studied by means of chemical thermodynamics.The results indicate that the black mercury sulfide can surely dissolve in single halogen acid,but it can’t dissolve in the solutions of alkali.
    Synthesis and Characterization of Transition-Metal Complexes of 2-Salicylaldehyde Aminophenol and Alcohol
    LI Ren-Tao, CAI Tie-Jun, LONG Yun-Fei, DENG Qian, PENG Zhen-Shan, YUAN Yi-Xian
    journal6, 2005, 26(3):  107-110. 
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    This paper introduced the preparation of the Zn(Ⅱ),Cu(Ⅱ),Ni(Ⅱ),Co(Ⅱ) and Mn(Ⅱ) complexes of 2-salicylaldehyde aminophenol and alcohol.The properties of the complexes were characterized by element analysis,IR,UV and Molarconduction.The result showed that the coordination number of metal ions is four,with tetragonal planar structures.Because the metal ions have different d electron structures,there are the differences of the luminescent property between the complexes.
    Scientific research bulletin
    A Novel Fuzzy Associative Memory Model
    ZENG Xiu, HU Gui-Wu
    journal6, 2005, 26(3):  111-114. 
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    The author presents a novel fuzzy   associative memory model(FAMM) based on fuzzy operation (∧,·)  and (∨,·).FAMM with (∧,·) is robust for dilative noise and FAMM with (∨,·) is extremely robust for erosive noise.In addition,if the input patterns contain both dilative and erosive noise,indirect approach using kernel vectors is discussed.
    Improvement of Reroute Algorithm for MPLS-Based Traffic Engineering
    FU Kai-Yao, XIAO Xiao-Cong, HUANG Wei-Hong
    journal6, 2005, 26(3):  115-117. 
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    The reroute algorithm for MPLS-based traffic engineering is improved.The author adopts the thought of “dismantling while building”,proposes a kind of more rational reroute algorithm which overcomes various kinds of defects of the present MPLS-TE reroute mechanism to certain extent.
    Neural Network Structure Optimization Based on Genetic Algorithm
    ZENG Shui-Ling, SONG Luan-Jiao, XU Wei-Hong
    journal6, 2005, 26(3):  118-120. 
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    ork so that an evolutionary neural network is formed.The way is proved to be effective and feasible.
    Robustness Design Based on Simulation Analysis for Ethernet GAP System
    HU Jin, ZHANG Yu-Gang
    journal6, 2005, 26(3):  121-126. 
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    Based on the principle of GAP technology and the design method of signal integrity,a simulation design solution of ethernet GAP system is provided,and its robustness is guaranteed.This system becomes a valuable candidate for the control of new generation network security modules because of its performance and stability.
    Analysis of Diagnosis and Treatment in 18 Young Infants with Respiratory Disorder Arising from Hypocalcemia
    GUO Ya-Zhang
    journal6, 2005, 26(3):  127-128. 
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    The respiratory disorder happens in infants aged no more than 3 months,especially in infants aged 2 months,and frequently appeares during winter and spring.This may arise from the worse excitative conduction function of electric activity during all parts of cortex in neonates or young infants,but there isn't typical eclampsia attack in clinic.But due to the development of the structures under the cortex is  relatively mature in neonates or young infants,which can excite tissues nearby,respiratory rhythm may change if excitation spreads to respiratory center.The author discusses the discrimination between respiratory disorder and pneumonia or intercurrent respiratory failure.The key  treatment is  to supply calcium by vein as early as possible.
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