Journal of Jishou University(Natural Sciences Edition)

On the Ternary Exponential Diophantine Equation for Generalized Pythagorean Triplets

LE Mao-Hua

journal6, 2011, 32(5): 1-8.

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Using the Gel’fond-Baker method,the positive integer solutions of the ternary exponential diophantine equation are discussed,and the case of n=1 is basic solved.

Smarandache Involving Function and Its Asymptotic Formula

HUANG Wei

journal6, 2011, 32(5): 9-10.

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The hybrid mean value of divisor products function was studied and two asymptotic formula of this function was given by using the analytic methods.

Finite Groups with Just 7 Maximal Subgroups

YOU Xing-Zhong, LIU Zheng, ZHU Wei-Hua

journal6, 2011, 32(5): 11-15.

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It is investigated how the number of maximal subgroups of a finite group influences its structure and determine the structure of a finite group with just seven maximal subgroups in this paper.

Monotonically Iterative Technique of Changing-Sign Solution to Nonlinear Cantilever Beam Equations

YAO Qing-Liu

journal6, 2011, 32(5): 16-21.

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Based on the monotonically iterative technique,the nontrivial solutions are obtained for a class of cantilever beam equations.In the class of equations,the nonlinear term contains all lower derivatives of unknown function and the boundary conditions is nonhomogeneous.

Stability of A Class of Fourth Order Nonlinear Autonomous System

QIN Hong-Li, FU Hua

journal6, 2011, 32(5): 22-25.

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Using “analogy method” is used to discuss the constructure of Lyapunuov function,a class of nonlinear system.A sufficient condition is obtained for the stability of the ordinary solution to the three-nonlinear fourth order system.

Existence of Triple Positive Solutions for Three-Point Boundary Value Problems of Fourth-Order Differential Equations

CAO Yin-Fang, XIAO Jian-Zhong, SHEN Zhi-Mo

journal6, 2011, 32(5): 26-31.

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The existence of triple positive solutions for a class of fourth-order differential equations is studied,whose nonlinear term f contains the second-order derivative u″ of the unknown function u.By using the Avery-Peterson fixed point theorem,some sufficient conditions are obtained for the existence of triple positive solutions of the boundary value problems.

Existence of the Solution of the Free Boundary Problem

CAO Xiao-Jun

journal6, 2011, 32(5): 32-33.

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The parabolic equation corresponding to the mathematical model of dissolving process is studied,the existence of which is proved by Schauder fixed point theorem and extremum principle.

A Class of Modifiable Rational Bézier Curves and Its Properties

JIANG Li

journal6, 2011, 32(5): 34-36.

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A class of modifiable rational Bezier curves with n+1 control points and a parameter l are presented.These curves preserves the shape of the control polygon better than original Bézier curves.By varying the values of the parameter l,the shape of the curves can be modified and the curves approximate globally to the control polygon as l increases infinitely.

Cyclic Matrix with Optimal Diffusion

ZHOU Jian-Qin

journal6, 2011, 32(5): 37-42.

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The diffusion performance of diffusion layer affects the anti-attack ability of all the cipher structure,and the linear branch number is an important indicator to measure the diffusion performance;the bigger the branch number is,the stronger the ability to resist differential and linear cryptanalysis.The optimal diffusion layer composed by cyclic matrix can recycle the existing resources,so the implementation performance is more superior.As the necessary and sufficient condition of branch number to achieve maximum is that each sub-determinant is not zero,the paper constructs an algorithm based on this condition which can generate cyclic matirx with optimal diffusion and verify whether a matrix meets the optimal diffusion.A lot of eight order cyclic matrixes with optimal diffusion are obtained for the first time.A construction method of a class of four order cyclic matrix with the optimal diffusion is presented,and an error in reference is also corrected.The experiment results show that the number of the cyclic matrix with optimal diffusion is distributed evenly.

Method of the Image Feature Extraction

WANG Zhi-Rui, YAN Cai-Liang

journal6, 2011, 32(5): 43-47.

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Image feature extraction is a computer vision and image processing,which first uses the computer to analyze and deal with the image information,then determines the fixed features of the image,and finally,deal with the practical problems by the extracted features.Based on the principles of image technology,this paper introduces four methods of image feature extraction and their advantages and disadvantages.

An Automated Testing Framework Based on TCL/TK

TANG Zan-Yu, JIA Zhi-Hong

journal6, 2011, 32(5): 48-51.

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Based on automation testing theory and TCL/TK,a automated testing framework and system are designed and implemented.It is showed that,based on experiment,this automated testing system can automatically connect to tester,realize automatic configuration of DUTs equipment,and judge the configuration results,control tester sending and receiving data frames,make judgement on the testing results obtained and give the final test results.

Some Basic Problems in Electromagnetism,Optics and so on,and Superluminal

ZHANG Yi-Fang

journal6, 2011, 32(5): 52-58.

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Some basic problems in classical physics should still be researched.First,acoustics,wave and nonlinearity are researched.Next,some possibly developed methods in electromagnetism are proposed.Particularly,a disagreement between the moving equation and the field equations in electrodynamics is investigated,and it should be developed to the general electromagnetic relativity.Thirdly,the nonlinear optics and new problems on photon with rest mass,etc.,are discussed.Finally,the superluminal,neutrino and so on are researched.

Study on the Sensitivity of Symmetrical 　Metal-Cladding Dielectric Waveguide

RAN Mao-Wu

journal6, 2011, 32(5): 59-61.

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By applying the perturbation approximation method to dispersion equation of symmetrical metal-Cladding dielectric medium waveguide,the author finds that when the thickness of waveguide layer decreases to sub millimeter range,the effective index will approach zero,and the ultrahigh-order modes are no longer related to polarization.Then the author defines the sensitivity of waveguide,and gets its relationship with effective index,thickness,wavelength and dielectric constant.When the effective index approaches zero,the ultrahigh-order modes will have a super high sensitivity.This theory is of certain directive significance to biosensor and photoelectronic device.

Diagnosis of Air Density Harassment

ZHOU Zhang-Wen, LIU Zhan, SUN Dong

journal6, 2011, 32(5): 62-64.

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By the laser beam deflection effect in air density gradient field,the laser deflection diagnosis system was designed,and the air density change dused by the aeronautical plasma actuators was diagnosed.The results showed that the air density decreased by -1.7% in the vicinity of the upper electrode’s edge between two electrodes,and increased by 0.27% in the vicinity of the lower electrode’s edge between two electrodes.The measurement results were consistent with the results of other means.But the diagnosis of the laser deflection system is faster and more effective.

A Novel Hyperchaotic System

GAO Zhi-Zhong, ZHANG Cheng

journal6, 2011, 32(5): 65-68.

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In order to generate complex hyperchaotic attractor,a new four-dimensional hyperchaotic system based on a three-dimensional chaotic system is built.The phase diagram, time response, power spectrum,bifurcation diagram and Lyapunov exponents spectrum diagram and fractal dimension of the system are analyzed by means of nonlinear techniques.Results show this system is a new four-dimensional hyperchaotic system with two positive Lyapunov exponents when its parameters satisfy certain conditions.The new system’s complex dynamical behavior can be periodic,complex periodic,quasi-periodic,chaotic and hyperchaotic as the parameter varies.

Analysis of Stability for Carbon Shale High-Filled Embankment

AO Yi-Bing, LIU Xin-Xi, YANG Zi-Han, WANG Yi-Ming

journal6, 2011, 32(5): 69-74.

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Taking the highway in Guangxi province as the example，the physical and mechanical performance of carbon shale is tested.The strength of carbon shale increases with the degree of compaction augment,while the strength greatly decreases under the condition of water immersion carbon shale.Using the strength reduction finite element method,the influence on compaction and rainfall for carbon shale embankment stability is analyzed by large finite element calculation software.The results show that the safety coefficient of embankment will increase,when the compaction degree increases;while it will significantly decline with rainfall.When the compaction degree is up to more than 93%,the carbon shale high-filled embankment slope will be steady-going.

Cloning of ACC Deaminase Gene from Pseudomonas koreensis JDM-2 and Expression in Escherichia Coli BL21

GONG Feng-Juan, ZHANG Yu-Feng, LIU Dan-Dan, 恩Te-Ma-Ke-·Bu-La-Ti-Bai , WU Lu-Mu-Han-·Na-Zi-尔Bie-Ke

journal6, 2011, 32(5): 75-79.

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The acdS gene encoding an ACC deaminase was amplified by PCR from genomic DNA of Pseudomonas koreensis JDM-2,and the PCR product was ligated into the pMD18-T vector and then sequenced.The acdS gene was excised from plasmid pMD18ACDS by double digestion with BanHⅠand HindⅢ,and cloned into the prokaryotic expression vector pQE30 to provide plasmid of pQE30ACDS.The ACC deaminase was expressed in Escherichia coli BL21 harboring the plasmid pQE30ACDS by IPTG induction.The sequence analyses showed that the acdS gene was 1 017 bp in length,DNA homology of the acdS genes between the Pseudomonas koreensis JDM-2 and the previously reported different bacterial strains in GenBank was 86% to 99%.The SDS-PAGE analyses showed a single protein band with a molecular weight of 39 kDa expressed in Escherichia coli BL21,and its enzyme activity was 0.214 U/mg.

New Recorded Plants from Wuling Mt.in Hunan Province(Ⅴ)

XU Liang, ZHANG Dai-Gui, LI Zi-Jie, CHEN Gong-Xi

journal6, 2011, 32(5): 80-82.

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Some new recorded plants of Wuling Mt.in Hunan are reported,including 1 genera,Heteropappus Less.,And 14 species,Codonopsis cardiophylla Diels ex Kom.，Adenophora rupincola Hemsl.，Sinojohnstonia plantaginea Hu，Trigonotis mollis Hemsl.、Physaliastrum chamaesarachoides (Makino) Makino，Solanum septemlobum Bunge，Veronicastrum brunonianum (Benth.) D.Y.Hong，Mazus omeiensis H.L.Li，Hemiphragma heterophyllum Wall.，Pedicularis muscicola Maxim.，Pteracanthus lamius (C.B.Clarke ex W.W.Smith) C.Y.Wu et C.C.Hu，Championella japonica (Thunb.) Bremek.，Mananthes latiflora (Hemsl.) C.Y.Wu et C.C.Hu，Caryopteris divaricata Maxim.,belonging to 13 genera in 6families.

A Study on the Resource of Ancient Trees in Jishou

LIU Bing, XIANG Shi-Jun, YU Xiang-Shao, YANG Jing-Jing

journal6, 2011, 32(5): 83-86.

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To explore the measures to preserve and exploit the ancient trees in Jishou,the field survey was conducted.The results are shown as follows:(1)there exist 1 013 ancient trees of 60 species,belonging to 29 families,43 genera,of which the largest number species were Liquidambar formosana (250) and Pistacia chinensis (159),taking up 24.7% and 15.7% respectively;(2)the number of Grade I ancient trees is 12(taking up 1.2%),the number of Grade II is 84 (taking up 8.3%),the number of Grade III is 917 (taking up 90.5%),and the oldest tree is 850 years old;(3)the ancient trees mainly exist in two towns,156 in Majingao and 155 in Paihou,taking up 15.4% and 15.3% respectively;(4)the ancient trees are mainly distributed behind the residents houses or in front of the villages(448 trees) and in small forests(238),which take up 44.2% and 23.5% respectively;(5)126 ancient trees are state-owned (12.4%),863 are collective-owned (85.2%),24 are individual-owned (2.4%).According to the survey,protection measures and development of these ancient trees are discussed.

Studies on Five Anthropological Traits of Miao Nationality in Hunan

LIU Jian-Guo, HUANG Fei-Feng

journal6, 2011, 32(5): 87-90.

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Five anthropological traits of total 562 people of Miao nationality(252 males,310 females ),including thumb type,palmar digital formula,nail type,planta digital formula and single flexion crease were investigated.The findings indicated that:(1)the frequency of straight thumb was 83.27%,the over stretch was 16.73%,the ring finger was mostly longer than the index finger,the frequency of longer ring finger was 89.32%,the frequency of longer index finger was 10.68%,the frequency of flat nail was 45.55%,the frequency of non-flat nail was 54.45%,the frequency of longer first toe was 44.31%,the frequency of longer second toe was 55.69%,the frequency of single flexion crease was 7.12% (much lower than that of without it);(2)the frequency of straight thumb had remarkable sex difference(P<0.05),the frequencies of longer ring finger had a remarkable sex difference（P<0.01）,the nail type,the tip of toe long and single flexion crease didn't have remarkable sex difference（P>0.05）;(3)no correlation occurred between the 5 traits.

Simultaneous Extraction and Isolation of Chlorogenic Acid and Flavonoids from Leaves and Rattan of Lonicera Japonica

LUO You, CHEN Li-Hua, LIANG Xuan, HUANG Hao, LI Biao, HUANG Lian

journal6, 2011, 32(5): 91-94.

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Chlorogenic acid and flavonoids were simultaneously extracted by ethanol with the aid of ultrasonic treatment from leaves and rattan of Lonicera japonica and then isolated by ethyl ecetate and macroporous resin D101.The purification of soluble flavonoid and chlorogenic acid was achieved by re-crystallization with ethanol and N-Hexane phase separation,respectively.Results showed that two products (A and B) were obtained and identified to be chlorogenic acid and soluble flavonoid.The chlorogenic acid content in product A was 91.2% with a yield of 1.23% and the flavonoid content in product B was 84.5% with a yield of 0.50%.The proposed method has been used to obtain flavonoids and chlorogenic acid from leaves and rattan of Lonicera japonica with satisfactory results.

Progress in the Study of Sinomenine

ZHU Shi-Long, CHEN Di-Zhao, LI Yong, LIN Hong-Wei, DUAN You-Gou

journal6, 2011, 32(5): 95-100.

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To further understand sinomenine and offer a scientific basis for sinomenine application,this paper comprehensively reviews the progress in the studies of recent years which cover the properties,content determination,extraction method,pharmaceutical function,degradation mechanism,dosage improvement and clinical application of sinomenine.

Effects of Nasal Endoscopic Surgery Combined with Drug for Nasal Polyps

WANG Jun, LI Dong-Qing

journal6, 2011, 32(5): 101-102.

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There is deficiency in traditional surgery and endoscopic treatment for nasal polyps,so prednisone was administrated to the patients in observation group every day in a week of preoperative and three days of afteroperation.Then the patients in the observation group accepted beclometasone dipropionate nasal spray in six months of afteroperation.According to the results,both volume of bleeding and length of stay as well as recurrence were reduced if therapeutic schedule was accepted.

Cardiovascular Effects and Mechanisms of Matrine

LIU Jie-Ying, GUO Sheng-Rong

journal6, 2011, 32(5): 103-106.

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The matrine-type of alkaloids,a kind of natural product,which mostly exist in leguminous plants are of various pharmacological activities.Matrine attributes to treating those diseases in cardiovascular system.Previous studies has indicated that the functions of matrine on cardiovascular system contain anti-arrhythmic,anti-chronic cardiac insufficiency,anti-fiberization etc,and explained the mechanisms of those activities.This article intends to summarize the research progress of matrine’s effects on cardiovascular system and its mechanisms in recent 10 years.The research in this paper indicates that matrine exerts its pharmacological activities by its effects on ion channel,active protein and signal transduction pathway.

Recognition and Formation Analysis of the Tourist Industry Cluster in the Border Areas of Hunan,Hubei,Sichuan,and Guizhou

WANG Zhao-Feng, YANG Wei-Shu

journal6, 2011, 32(5): 107-111.

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The tourist industry is highly concentrated in the border areas of Hunan,Hubei,Sichuan,and Guizhou.This paper analyzes the tourist industry clusters by overall location entropy and explores the reasons for the cluster formation,which is beneficial to make tourist industry the pillar industry in those areas and improve people’s living standard.

Investment Value Evaluation of Small and Medium-Sized Enterprises from the Financial Perspective

YOU Xin-Cai

journal6, 2011, 32(5): 112-116.

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With the stable and rapid development of market economy,the small and medium-sized enterprises grow rapidly as well,and with their advantages,they play a more and more important role in the national economic and social development.Therefore developing the small and medium-sized enterprises is a basic and strategic task to keep the national economy in stable and rapid development and guarantee the people’s livelihood and the social stability.From the financial perspective,i.e. from the asset quality,profitability,grow and cash-obtaining ability,this paper studies how to evaluate the investment value of small and medium-sized enterprises,how to find the enterprises with potential,and how to direct investment orientation,which is significant to support and promote those enterprises.

Reflection on the Cyclic Economy in the Autonomous Prefecture of Western Hunan

LONG Jian-You

journal6, 2011, 32(5): 117-120.

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Based on the analysis of the present situation and problems of the economic development in the Western Hunan Autonomous Prefecture,this paper points out the necessity and urgency for the cyclic economy application.Then several feasible development modes are discussed for the Western Hunan Autonomous Prefecture.

Relationship Value of Boundary Spanners

ZHANG Qingan

Journal of Jishou University（Natural Sciences Edition), 2011, 32(5): 121-123.

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The research on the corporate value of relationship mainly focuses on the financial performance and the adjustment variables,such as scale,operation period and system of ownership.This paper pays great attention to the corporate value about relationship between the boundary spanners.The survey data from 148 copies of valid questionnaires show that the relationship of the boundary spanners has a positive effect on financial performance,the impact of the relationship on corporate performance has been reverse regulated respectively by enterprise scale and operation period,and the system of ownership plays a regulatory role in the relation between the relationship and financial performance.

Network of Adolescent Temptation and the Pros and Cons Network

XIAO Min

Journal of Jishou University（Natural Sciences Edition), 2011, 32(5): 124-127.

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