Table of Content

    25 November 2006, Volume 27 Issue 6
    Mathematics
    Pricing of Asian Options with Discrete Geometric  Average in the Jump-Diffuse Process
    HE Shu-Hong, ZHOU Mi
    journal6, 2006, 27(6):  1-5. 
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    When important information is declared in the stock market,stock price will jump.In this paper,when stock price is in the Ito-Skorohod jump-diffuse process,the authors  study the pricing of Asian options with discrete gemotric average and obtain it’s price formulas.
    A General Equilibrium Theory in Discrete Spaces
    LI Chun-Lin, QU Bo-Yun
    journal6, 2006, 27(6):  6-8. 
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    This paper generalizes the general equilibrium theorem to the case of indivisible markets where preferences is strictly convex,continuous and strongly monotone.The authors thus give a sufficient condition on the existence of discrete equilibrium.
    Integral Part of Powers of Real Quadratic Units
    LE Mao-Hua
    journal6, 2006, 27(6):  9-10. 
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    Let D be a positive integer which is not a perfect square,and let α=(u+v〖KF(〗D〖KF)〗)2,where (u,v) is positive integer solution of the Pell equation u2-Dv2=1.It is proved that,for any positive integer n,[αn] is an odd integer and [αn]+3 is a perfect square,where [αn] is the integral part of αn.
    Admisibility  of  Random Linear  Prediction  to the Case of Regression Coefficients
    TAN Li, HE Le-Ping
    journal6, 2006, 27(6):  11-17. 
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    Admissibility of linear prediction in finite populations with arbitrary rank under quadratic loss is investigated.For the general random effects linear model,the authors obtain the necessary and sufficient conditions for a linear prediction Lys(Lys+a) of  Qy to be admissible in the class of homogenous linear predictions (linear predictions) and the class that contains all predictions.
    A Fuzzy Two-Stage Algorithm for Multi-Objective Portfolio Selection Model
    CHEN Guo-Hua, LIAO Xiao-Lian
    journal6, 2006, 27(6):  18-21. 
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    Multi-objective portfolio selection model is studied.In this  model,the risk is taken as the sum of the absolute deviation of the risk assets instead of covariance.It is a multi-objective linear optimal problem.Fuzzy two-stage algorithm is applied to solve it.The optimum solution of an example about this portfolio model is given with this new algorithm.
    Two Asymptotic Formulas of Functions of  Sdfp(x) and Sdf*p(x)
    ZHU Min-Hui, CUI Yan
    journal6, 2006, 27(6):  22-23. 
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    To any real number x,the Smarandarche function is defined as Sdfp(x)=min{m∈N:px≤m!!},x∈(1,∞),and the antithesis as Sdfp(x)=max{m∈N:m!!≤px},x∈(1,∞).The asymptotic properties of these two functions are studied;thus,the asymptotic formula about their is obtained.
    On the Diophantine Equation x3-8=61y2
    HUANG Yong-Qing
    journal6, 2006, 27(6):  24-25. 
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    By using congruence and recurrent sequence,the author has proved that the Diophantine equation  x3-8=61y2 has only the integer solution (x,y)=(2,0).
    Computer
    Implementation of a Monitoring System Model for Distributed Object Based on Interceptors
    WANG Hong-Bo, YANG Shu-Qiang
    journal6, 2006, 27(6):  26-30. 
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    This paper introduces the conception of the interceptor,puts forward a monitoring system model based on portable interceptor under the condition of little effect on performance,and presents in detail an approach to design and realize the object monitoring system using interceptor pattern in large-scale transaction processing.
    Remarks on a Proxy Signature with Proxy Signer Privacy Protection
    LI Zong-Shou, LI Fang-Jun, LU Rong-Bo
    journal6, 2006, 27(6):  31-33. 
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    A proxy signature with proxy signer privacy protection is proposed by Fu-Kou-Xiao,which has two characteristics listed as follows:the proxy signer’s identity is hidden behind an alias;the anonymity can be revoked when it is need to identify the proxy signer without a trusted third party.In this paper,the authors show that Fu-Kou-Xiao’s scheme is insecure.The original signer may use the capability of proxy signature freely.Also the proxy signer can repudiate a valid proxy signature generated by himself.Therefore,the scheme does not satisfy the properties of undeniable and misuse of the proxy signature.
    Encoding Method for BM2262 Encoder with Software Achievement
    ZHANG Wen-Zhao, HONG Tian-Sheng, HU Jun-Wan, LIU Zhi-Zhuang
    journal6, 2006, 27(6):  34-36. 
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    A software encoding method in stead of BM2262 encoder is introduced,in which the circuit employs micro-controller.Hardware circuit is simple and needs no other chip.This encoding method has multiple function and is easy to change.So this encoding circuit has more applications than the BM2262 encoding circuit.
    Principle and Application of Personal Software Process
    WEN Hai-Ying
    journal6, 2006, 27(6):  37-41. 
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    The personal software process (PSP) relevant technology and the PSP implementation process are studied in detail.Furthermore,the principles for PSP application by the software enterprises are presented.
    Delphi Fuzzy Pattern Recognition Based on the Multi-Level Evaluation System
    LI Jian-Feng, WU Yin
    journal6, 2006, 27(6):  42-45. 
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    This paper tries to apply the fuzzy evaluation principle of fuzzy mathematics to evaluate the daily things.The things with multiattribute and multiparameter are to be mathematically modeled,and an appropriate result of the evaluated things is to be given based on the fuzzy evaluation principle and to be realized through Deiphi programming language.
    Physics and electronics
    Effect of Electrostatic Potential on the Depletion Interactions in Charged Colloidal Systems
    LI Chun-Shu
    journal6, 2006, 27(6):  46-49. 
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    In the colloidal systems confined by two parallel plates (one of which is weak charged),the author uses 4D hyper-spheres method to calculate the energy of the system and uses the acceptance ratio method to calculate the depletion interactions between a charged large-sphere and the plate.By analyzing and comparing with the results of the hard sphere system,it is found that electrostatic interactions can strengthen depletion interactions between the charged large-sphere and the confined plate.
    Method of Treating Data in Newton Ring Experiments Based on Origin
    HU Su-Mei, CHEN Hai-Bo
    journal6, 2006, 27(6):  50-52. 
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    The Origin software is applied in the data treating to line matching and making diagram in newton ring experiment.The experiment result shows  an excellent accordance with the results of data treating by the traditional method and least square method.The experiment is concise and rapid with audio-visual results,and it can avoid the error producing from the handing treatment if the origin software is applied in the data treating and making diagram.
    Eliminating Missed Diagnosis in Fault Location for Nonlinear Resistance Networks
    XIE Chang-Yan, HE Yi-Gang
    journal6, 2006, 27(6):  53-55. 
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    The paper presents method of canonical piece-wise linearization which can give all the multi-solutions in the nonlinear resistive network,and uses the  backward-propagation neural networks for hard fault diagnosis of the nonlinear resistive network.Compared with the general methods,the proposed one overcomes the problem of fault missing location in the nonlinear resistance network.
    A Method to Simulate Video Signals of Real-Time Imaging for Synthetic Aperture Radar
    ZHANG Hong-Xin
    journal6, 2006, 27(6):  56-59. 
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    The video signal model for synthetic aperture radar (SAR) is set up,and a method to generate echo signals for SAR using AWG520 arbitrary waveform generator is presented.Then,the video echo signals of real-time imaging for SAR are simulated.When these video signals are inputted to the real-time processor of SAR after sampled through A/D,the performance of continuous dynamic imaging for SAR can be examined,such as join of real-time images,doppler frequency center,moving compensation of airplane and the performance of front-slant imaging,etc.
    Single Station Passive Location Based on TDOA and DOA Measurement
    QIAO Liang
    journal6, 2006, 27(6):  60-63. 
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    Passive location and tracking of moving target in space is a key problem in recent years.The technology has been widely applied in the fields of aviation and guidance.It has expansive prospects for application. The modified gain EKF (MGEKF)algorithm for passive localization of maneuvering target by single station is discussed.Based on the time difference of arrival (TDOA) and the direction of arrival (DOA) of the emitter,passive localization by single station is practicable,and also the localization of maneuvering target is practicable with the MGEKF algorithm.Some concerned issues,such as technical problems,principle and algorithem are discussed in this paper.With the help of computer simulation,the method is proven to be correct and effective.
    Numerical Study on Rayleigh Scattering Property in High-Index-Core Bragg Fibers
    ZHANG Fang-Di, LIU Xiao-Yi, ZHANG Min, YE Pei-Da
    journal6, 2006, 27(6):  64-68. 
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    An analytical model for Rayleigh scattering in fibers is presented based on a full-vector finite element method (FEM) with edge/nodal hybrid element.By using this model,the Rayleigh scattering property of F-doped and GeO2-doped high-index-core bragg fibers (HICBF) is investigated.Numerical results show that the effects of fiber structure on Rayleigh scattering in F-doped HICBF are quite opposite to that in GeO2-doped HICBF.By adjusting the cladding structure,minimized Rayleigh scattering loss (RSL) can be obtained in GeO2-doped HICBF with a certain high-index core radius.Conclusion in this paper is also suitable for other doped HICBF.
    Face Detection Based on Skin Model and Features Location
    ZHANG Shu-Zhen, SONG Hai-Long, YANG Wei-Ping
    journal6, 2006, 27(6):  69-72. 
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    A face detection algorithm for color images based on skin model and facial feature location is presented.Firstly,a new skin model (H_SI_I skin model) which has the robustness for variety of brightness is built.Secondly,facial region’s horizontal gray-level projection is used to estimate the horizontal position of eyes.Finally,the edge features are checked to give the proper position of eyes.Experiments show that the algorithm is simple,fast and robust.
    Designing of One Kind of Low-Cost and High-AccuracyTemperature Measuring Device
    PENG Dao-Lin, ZHAO Xin-Kuan, LI Zhi-Fu, PENG Chu-Wu
    journal6, 2006, 27(6):  73-76. 
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    One kind of simple high-accuracy temperature measuring device based on AD590 temperature sensor is introduced,and its software and handware designing proposal is elaborated.The resolution can reach 0.05 ℃,and accuracy 0.1 ℃.
    A Private Network Traversing Solution Based on Softswitch and Media Portal
    WANG Rong-Li, LIANG Ping-Yuan, YANG Xi
    journal6, 2006, 27(6):  77-79. 
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    Some technologies to resolve network address translation traversal problem in  next generation network system are introduced.Through discussing those technologies’ available field,available object and limitation,a new solution based on coordination of Softswitch and Media Portal is presented.
    Numerical Simulation on Spallation Process Induced by Reflection of Stress Wave Under Different Free Faces
    ZUO Yu-Jun, TANG Chun-An, GONG Feng-Qiang
    journal6, 2006, 27(6):  80-83. 
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    Based on mesoscopic damage mechanics,numerical code RFPA2D (dynamic version) is developed to simulate the spallation failure process of inhomogeneous medium induced by reflection of stress wave,then the behaviour and mechanism of spallation process under different free faces are numerically analyzed and compared.The results show that the spallation failure process of inhomogeneous medium induced by reflection of stress wave can be simulated realistically with the code of RFPA2D.It is indicated that the spallation failure process of inhomogeneous medium induced by reflection of stress wave is concerned with not only peak value of stress wave,duration of stress wave and waveform,but also the propagation direction of stress wave.The spallation failure process occurrence under incident stress wave perpendicular to free faces is easier than that under incident stress wave inclined to free faces.The spallation failure process does not occur under incident stress wave parallel to free faces.
    Biological resources
    Observations on Spore Morphology of Five Species of Selaginellaceae from China
    LIU Xiao-Rui, WANG Gui-Zhong, ZHANG Qiao-Yan, ZHU Yu-Qiong, SUN Xiao-Hong, ZHAO Yun-Yun
    journal6, 2006, 27(6):  84-90. 
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    The megaspores and microspores of five species of Selaginellaceae——Selaginella vaginata Spring,S.mairei H.Lev,S.kraussiana (Kunze) A.Br.,S.drepanophylla Alson,S.monospora Spring were observed for morphological features under scanning electron microscopy (SEM).The spore morphologies of the five species have great similarities:trilete and radial symmetry.The SEM studies showed that complex ornamentations on the surface have distinct differences in the five species.
    Comparing Analysis on Isozymes of Dolichomitriopsis Diversiformis and Isothecium Subdiversiforme
    LI Chao-Yang, TIAN Xiang-Rong, CHEN Jun, JIANG Ye-Fang, LI Jing
    journal6, 2006, 27(6):  91-94. 
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    Three isozymes (POD,SOD and EST) of Dolichomitriopsis diversiformis and Isothecium subdiversiforme were analyzed by using poly-acrylamide gel electrophoresis (PAGE).The results showed that:(1) Bands of three isozymes not only clearly showed the identical common properties of their family,but also showed their difference among species and populations.(2) Three isozymes of two species had higher similarity,showing that Dolichomitriopsis was similar to the Isothecium in genetic mapping.(3) On the level of species,the genetic diversity of I.subdiversiforme were higher than D.diversiformis,but between the populations,the genetic diversity of D.diversiformis were higher,and influence of environmental factor were larger.
    Characteristics of Protonema Development of Submerged Culture in Dolichomitriopsis Diversiformis
    WEI Hua, WANG Ya-Qin, LI Jing
    journal6, 2006, 27(6):  95-98. 
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    Spores of Dolichomitriopsis diversiformis were planted on Knop medium with two kinds of cultures (submerged culture and normal culture).The germinations of the spores were very similar in these two conditions and the germination rates were over 90%.The protonema in the submerged condition,which was of slow growth,great length and a few branches,couldn’t produce gametophore primordium even at day 80.While,the protonema in the normal condition,which was of fast growth and many branches,produced gametophore primordium at day 40.The results showed that the submerged culture has an obvious effect on the development of protonema.
    Population Size of Wild Black Stockfish Sebastodes Fuscescens in Fish Cage Culture Zones
    GE Chang-Zi, FANG Jian-Guang
    journal6, 2006, 27(6):  99-102. 
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    The density of wild Black Stockfish Sebastodes fuscescens in fish cage culture zones in Ailian Bay is assessed as 0.01 ind/m2 by one non-line regression method.And the population size of these wild fish is equal to the number of cultivated fish in 5.6 floating net cages or 135 raft net cages.These wild fish may bring positive or negative ecological effects to fish farms,e.g.,these fish will compete DO with cultivated fish and provide 0.8%~1.3% of nitrogen demand for primary production in the whole bay.Besides,the wild fish may consume feed remains and produce feces.
    Chemistry and chemical engineering
    Investigation on the Surface Behavior of Dihydromyricetin Imprinted Polymer Monolith
    LI Hui, LI Ya-Nan, ZHANG Chao-Hui, NIE Li-Hua, OUYang-Yu-Zhu , LI Zhi-Ping
    journal6, 2006, 27(6):  103-106. 
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    Determination of adsorption isotherm of dihydromyricetin imprinted polymer monolith was carried out by frontal analysis technique.Langmuir,Bi-Langmuir and Freundlich equations were used for the fit of these isotherms in order to obtain the site distribution,binding constants and saturation capacities of the polymer monolith at different temperatures and under different mobile phase make-up,respectively.The results indicated that the fittings of the data to Bi-Langmuir and Freundlich model were both good.From the best fitting of Bi-Langmuir equation,it was obtained that the binding constants and saturation capacities at 20 ℃ using tetrahydrofuran as mobile phase were 0.39 mL/mg and 133.23 mg/mL for the first site class and 135.07 mL/mg and 0.071 mg/mL for the second site class,respectively.
    Synthesis and Characterization of Functional Tetraarylbenzene Derivatives and Triphenylpyridine
    JU Xiu-Ping, CHENG Xiao-Hong
    journal6, 2006, 27(6):  107-109. 
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    Tetraarylbenzene derivatives and triphenypyridine are readily available by condensation of phenylacetates with 2,4,6-triphenlypyrylium salts and undergo suzuki coupling with boronic acid or reduction the nitrol group with Fe/HCl.The application of these compounds to construction of complicate architecture and as electrooptical materials are expected.
    Disruption of the Yeast Cell Walls by Vortex-Mini-Bead Disruption Method
    LIU Xiao-Yong, WANG Qiang, HU Yong-Jin
    journal6, 2006, 27(6):  110-113. 
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    Because of the difficulty to disrupt the yeast cell walls,a new method to disrupt yeast cell walls named vortex-mini-bead disruption is proposed in this paper.The ratio of broken yeast cells is obtained to 95.28% by the new method.The new method does not need costly equipment and is easily operated,so it is popularized in laboratory.Furthermore,the new method can be applied to break the walls of others fungal cells.
    Analysis of GC-MS Data from Essential Oil of Houttuynia Cordata Thunb by Orthogonal Projection Resolution
    CHEN Di-Zhao, Chen-Lin
    journal6, 2006, 27(6):  114-117. 
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    Established a method which verifies chromatogram peaks pureness and resolves overlapping peaks——Orthogonal Projection Resolution (OPR).It is applied to analyze GC-MS data of essential oil in Houttuynia cordata thunb.Two components of multicomponents system are confirmed,and their pure mass spectrum and chromatogram are also resolved.
    Medical Science
    Measuring the Craniofacial Soft Tissue Depth of Female People of Tujia Nationality
    CHEN Ting-Yu, PENG Ying-Fu, YU Jia-Shu, ZHONG Shan, LI Xiao-Ping, WANG Ding-Shu
    journal6, 2006, 27(6):  118-120. 
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    Objective:To research characteristics of the craniofacial soft tissue depth of the female  people of Tujia nationality.Methods:By means of the check of X-ray on 10 points from 5 parts on the sagittal plane of craniofacial soft tissue of 76 Tujia nationality female adults at random who came from the west part of Hunan Province,the data of depth of all points were studied in statistics.Results:The measured values were from (3.29±0.16) to (9.05±0.18)mm.By one-way anova analysis,the significant age and position difference existed in the thickness of craniofacial soft tissue.At the same time,it was different from the Han,Zhuang,Bai,Dai nationality,etc.Conclusions:The position and age difference in the depth of craniofacial soft tissue of Tujia nationality is significant.
    Economics
    Holiday Economy and Sports Tourism Development
    TIAN Zu-Guo
    journal6, 2006, 27(6):  121-124. 
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    The relationships between holiday economy and tourism economy,sports and tourism are first explained,and then the connotation,characteristics,functions of sports tourism and its developing measures are studied.Tourism economy is an important part of holiday economy.Since sports and tourism have the similar economic and cultural connotation,it is possible to combine the two.Sports tourism plays a significant role in the aspects of increasing the country's income in foreign currency,balancing the domestic demand and need,creating more opportunities for employment,giving impetus to related industries,accumulating construction fund,shalling off poverty and attaining prosperity,and promoting economic cooperation and communication with foreign countries.
    Management
    Strategies of Library Management Based on Knowledge Management
    LU Ming-Fang
    journal6, 2006, 27(6):  125-128. 
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    The knowledge management is a new issue of library management in knowledge economy era and a product of economic and technological development as well.The knowledge management provides some new instruction and technical support for library management.The realization of the library knowledge management should be based on the ideas innovation,mechanism safeguard and talented person cultivation.
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