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September 15,2008
Volume 1,Issue 9
Pages 973-1112
Subject Area:Agricultural Finance,Financial markets,Computational Solid Mechanics,Fluid Mechanics,Flexible Multi-body Mechanics

Title: Analysis on rural household crediting behavior in western minority areas based on the investigation of the village C of Guizhou

Authors: ZHANG Miliang, LI Zhixin, YANG Ling, SHAO Feihua,LI Xiaoling, LIU Xiaojun, SHI Jiahong
PP: 1106～1112
Abstract: Through the use of empirical research methods and in the form of field surveys to study the farmers of borrowing funds, this paper has reflected the whole picture of the status of the rural financial environment, characteristics and problems in west minority areas and pointed out the reasons for the problem. The article does the horizontal and longitudinal comparison of formal financial institutions and non-formal financial institutions in the village C of Guizhou. Explains existence s necessities and the reality basis of the non-regular financial institution, reappears respective strengths and shortcomings of the two different types of financial institutions in support of the rural financial aspects, rationally carefully examins the regular financial organ with the non-regular financial organ which have effect on the current agriculture rural economy.Finally, the author also proposes the corresponding countermeasure in order that provides suggestions for the reform of current rural western areas finance and the development uses for reference and refers.
Keywords: household economics；rural household crediting behavior；positive analysis；western minority areas

Title: Rural credit supply insufficiency based on market failure

Authors: WANG Chongrun
PP: 1099～1105
Abstract: Rural financial market failure implies rural credit supply insufficiency and credit ration severe. The factors that make rural financial market failure include insufficient competition, information asymmetries, higher transaction costs and system risks. To rectify market failiue is necessary to increase rural credit supply. Eliminating market failure need open rural financial market, perfect rural financial system based on mutual finance, build rural credit incentive mechanism, develop rural insurance and rural credit guarantee institutions. This paper’s contribution is based on market failure to analyze the reasons why rural finance developing slowly and put forward appropriate policy proposals.
Keywords: rural finance；rural credit；supply insafficiency；market failure

Title: The analysis of huge sum of China's foreign exchange reserve

Authors: YU Fangsheng, PENG Runzhong
PP: 1092～1098
Abstract: During the past few years, foreign exchange reserve increases by leaps and bounds, and is up to now already 1 500 billion U.S. dollar. The ample foreign exchange reserve scale brings about a lot of latent serious problems while reflects China s big and powerful economy. Therefore, carrying out the research in this field is very important in current time. By probing the causes of sharp increase of foreign exchange reserve in detail firstly, and analyzing this problem s negative influence secondly, the paper suggests many actual countermeasures at last. The conclusions Tnclude: 1) The current high trade surplus is the main reason for the sharp increase of foreign exchange reserves. The influx of hot money, FDI continued steady growth, the sudden increase of overseas financing and institutional factors are the basic reasons of huge foreign exchange reserve. 2) With the rapid growth of foreign exchange reserves in the current situation, the government need to take positive measures to reduce trade surplus, and improve the yield of foreign exchange reserves. However, the most fundamental measure is to encourage foreign exchange reserves “going out”, which is the key way to solve this problem.
Keywords: international finance；foreign exchange reserve；trade surplus；“go global” strategy

Title: Analysis on the changes of China s aquatic products exported to Japan based on the CMS model

Authors: QIU Xiaohong, Hu Qiuguang
PP: 1086～1091
Abstract: This article uses constant market share (CMS)model to analyze the change of aquatic products from China to Japan in recent ten years, and seek the primary causes for which the aquatic products exportation grow. The result discovers that the competitive power is the main effect factor of the continual growth of aquatic products exportation. But in recent years the competitive effect is decreasing. The exportation hindrance function of the import country s demand effect reduces gradually. Commodity structure effect for the exportation growth increases gradually, but is not obvious. According to the analysis, it finally puts forward some pointed proposals.
Keywords: agronomics；aquatic products；constant market share(CMS) model；competitive effect

Title: An institutional analysis of vehicle affiliated of county public traffic

Authors: WANG Yu
PP: 1081～1085
Abstract: Being part of the new county construction, the county public traffic is playing an important role in current China. The development conditions of the county public traffic and the choice of firm style are analyzed firstly in the paper. For the private firms, the impetus of entering the county public traffic come from the potential market demand. The style of vehicle affiliated is chosen, which has internal advantages and disadvantages. The advantages boost the rapid development of the county public traffic at initial stages, while the disadvantages hinder the change from intension type to the extension type. To remove the disadvantages, the change to the higher firm structure, the corporate governance structure, is essential.
Keywords: transport economics；county public traffic；vehicle affiliated；transaction cost

Title: Factors affecting the location of FDI in Jiangsu Province

Authors: TANG Wenjun, WANG Wenwu
PP: 1074～1080
Abstract: In the process of economic globalization, the speed of the world capital flow accelerates and its quantity increases. However, regional development is highly unbalanced, namely foreign direct investment (FDI) in the host country shows the trend of geographical concentration. Therefore, the competitions among countries and areas rely on social comparative advantages instead of the natural resources. Jiangsu Province is one of the highly open economies in China. The space disparity of FDI is more and more obvious and the amount of FDI is increasing quickly. The quantity distribution of FDI is decreasing from the south to the north in Jiangsu Province. The differences of the south, middle and north is evident, which is similar to economic disparities. This paper discusses the factors of FDI regional discrepancy by environment-system-policy(ESP) model and analyses the regional determinants of FDI in Jiangsu Province by the means of panel data analysis and constructs panel data model on the whole province, south,middle and north, with the statistics data from 1997 to 2006. Based on the findings, this paper presents the corresponding policy suggestions.
Keywords: international trade；foreign direct investment；locational determinants；panel data analysis

Title: A shift-share analysis of Chinese regional difference about its labor-productivity: the case of tertiary industry

Authors: YANG Wenju
PP: 1067～1073
Abstract: This article analyzed the regional difference of Chinese labor-productivity from 1999 to 2002 with shift-share analysis approach. The main results are the follows: Chinese regional difference about its aggregate labor-productivity, industry mix difference factor and productivity difference factor increase small annually but fluctuate great between provinces; the resource allocation difference factor fluctuates small spatial-temporally except for Beijing but has an expanding trend; the productivity difference factor predominates in the aggregate difference accounting and forecasting; there is a positive relationship between the industry mix difference factor or the productivity difference factor and the aggregate difference, but the relationship between the resource allocation difference factor and the aggregate difference is negative. Finally, it puts forward that those measures which can improve the regional industry-specific s productivity conformably play a very important role in the course of closing the gap of Chinese regional economic development.
Keywords: regional economics；shift-share analysis；aggregate labor-productivity difference；industry mix difference factor；productivity difference factor；resource allocation difference factor

Title: The analysis of the competitiveness of China s copyright trade from the aspect of the industrial competition ability

Authors: ZENG Yongmin
PP: 1058～1066
Abstract: China’s copyright trade has been in the trade deficit state continuously. There are many reasons, such as: China’s economic development is not on the high level,the relevant laws are imperfect and language barriers. This article sets up a model by referring to the country competitive advantage theory and researches from the aspect of industrial competitive ability. The results showed that owing to the uncompetitive ness of copyright trade caused by the uncompetitive ness of copyright industry, China’s copyright trade has been in the trade deficit state for a long time. So the competitiveness of China’s copyright trade can be strengthened by enhancing the competitiveness of the copyright industry.
Keywords: international economics；industrial competitiveness；copyright trade competitiveness；national competitive advantage theory

Title: Research on efficiency estimation of China open-end mutual fund based on withdraw rate

Authors: DU Yu, JIN Di
PP: 1049～1057
Abstract: This paper analyzes efficiency of China open-end mutual fund based on withdraw rate. Data envelop analysis is used to analyze the efficiency of all thirty open-end mutual funds which have been existing for more than four years. After that entropy weight is used to sort these funds ascendingly. At last it gives out useful conclusions to investors and fund managing company. Open-end mutual funds play important role in security market, so the effectiveness deserves a deep research. Facing a huge scale withdraw itself is a liquidity risk, for this reason it is very necessary to research the impact caused by withdraw rate on funds efficiency. Withdraw is also a synthetic result, to analyze and use the results in efficiency testing and ranking is very helpful for mutual fund managing companies. They can improve their scores while predict huge withdraw risk.
Keywords: finance；withdraw rate；efficiency estimation；data envelop analysis；entropy weight

Title: The design and dynamic simulation analysis of the column-type support of standing shield hydraulic support

Authors: LU Dongping, LI Yixian, Pan Yishan
PP: 1040～1048
Abstract: Aiming at the wasteful actuality for the moment that during the producing processes of hydraulic supports it has to manufacture the physical prototype after scheming out the two-dimension drawings, and then experiment on the physical prototype to validate whether the design is right. This paper summarizes the development of hydraulic supports internal and external. And this paper founded the mechanical model of the ZY3600/12/27.5L hydraulic support, educed the relations between the column-type support and the loads acting on the hydraulic support by calculating, especially analyzed and examined the intensity of the column-type support. On the ground of this, according to the practical conditions of the collieries in Fuxin, it chose the appropriate colliery to the ZY3600/12/27.5L hydraulic support. As well as by combining with computer aided design(CAD) and using Pro/ENGINEER, it founded the 3D model and dynamic simulation analysis of the ZY3600/12/27.5L hydraulic support which designed by Tianan Mining Machine Limited Liability Company in Shenyang, and at the same time it completed the works of checking the interferences and pointing out the mistakes in the design. This kind of virtual prototyping technology will throw off the abuse of single 2D design and scheme out the hydraulic supports according with the productive rules without losing man powers, material resources and financial resources furthermore.
Keywords: engineering mechanics；hydraulic support；column-type support；computer aided desigh(CAD)；dynamic simulation

Title: Mechanical model research and damnification of bridge deck pavement of the asphalt concrete bridge

Authors: ZHANG Jiafeng, ZHU Shidong, HAN Yong
PP: 1035～1039
Abstract: Recently, direct and indirect economic losses caused by damnification of bridge deck pavement have attracted the attention of researchers. In this paper, the frequent damnification types have been summarized in pictures, and introduced with a real cable-stayed bridge. The paper takes bridge panel and its parts and deck pavement of the asphalt as a whole into account to analyse based on linear-elastic analysis theory, through ABAQUS FEM. Then the paper elementarily analyses shearing strength between layers, pulling strength in the pavement and skin-deep displacement by 3-Dimention FEM, and finds out the worst disadvantageous part through load calculation. On the basis of in-depth study of the loads on bridge deck department, the problem that how to establish a scientific and reasonable mechanical model has been generally discussed to analyze actual state of stress and strain of bridge deck pavement. At last, the paper brings some problems which are in need for solving in the following theory research.
Keywords: bridge engineer；bridge deck pavement；finite element method(FEM)；asphalt concrete；mechanical model

Title: A study on electrothermal explosion spraying system and its electricity characteristic

Authors: ZHOU Gangyi, DONG Xinlong, LIU Jun
PP: 1030～1034
Abstract: As a new-type thermal spraying technology, the electrothemal explosion spraying method possesses quite potential applications. Tn this paper designed and set up a electrothemal spraying system, which the parameter of charge voltage was controllable for experimental purpose of electrothermal explosion spraying using metallic powder. The discharged current response was tested to validate the feasibility of electrothemal spraying system. Furthermore, an electrothermal explosion spraying process for Cu powders was studied experimentally. The characteristics of electric parameters, such as current, voltage, power and the metal power resistance during explosion were analyzed in detail. The energy-utilization ratio of the system during the electrermal explosion was calculated when the charging voltage is 5 kV.
Keywords: engineering mechanics；electrothermal explosion；powder；electricity characteristic

Title: Vortex detection based on streamline analysis

Authors: ZOU Wennan, ZHAO Yong, DONG Hong
PP: 1021～1029
Abstract: The vortex detection is one of the kernel subjects in the analysis of flow field. Researchers have developed many feature-based vortex detection technologies even though there is no clear definition on the notion vortex. In this paper, based on the understanding of streamline structure, the vortex pattern was identified through the swirling relation. The parameter system with speed, curvature and torsion was used to classify the streamlines. The vortex area and the vortex core area at a point were now defined by the swirling relation of streamlines around the streamline at the point, and a new parameter system was deduced to recognize the vortex region. Finally, four typical examples were used to verify the effectiveness of new criterions.
Keywords: hydrodynamics；swirl tensor；streamline；vortex area；vortex core area；parameter system

Title: Damage localization technique based on mode shape parameter

Authors: ZHU Shuiwen, FAN Jianping, WANG Cheng
PP: 1015～1020
Abstract: This paper presented a methodology to locate damage in structures for which the first two natural frequencies and mode shapes were available. Based on the analysis of the dynamic characteristics of beam structure before and after damaging, the paper established the concept of the fraction of modal energy as a factor sensitive to element damages. According to the factorization method of local damages of the structure, indicating factors sensitive to element damages were established to deduce the change of the elemental modal strain energy before and after element damaging. Then, the concept of error index for a given mode and the concept of damage indicator for all available modes were deduced. Finally, a methodology to locate damage in beam structure was given using the error index and the damage indicator. As a numerical experiment, the simulation was carried out using general-purpose finite element software ADINA for a simple supported beam and modal responses of the structure were generated before and after damage. The experimental results illustrated that the method was effective and robust in locating structural damage.
Keywords: engineering mechanics；natural frequency；mode shape；finite element method(FEM)；damage localization

Title: Study about the characteristic of periodic and chaotic motion of rain-wind-induced vibrations of cable structure

Authors: HE Xuejun, ZHANG Qichang, ZHAO Demin
PP: 1007～1014
Abstract: The paper studied two-degree of freedom model of rain-wind-induced vibrations of cable structure with moving upper rivulet was studied. The nonlinear terms of original system was expanded into Taylor series up to 5 orders, by which the simpler ordinary differential equation was derived. The system of rain-wind-induced vibration of cable structure was studied by normal form theory, the 5th order normal form of system was developed. It showed that their moments converged to limit circles. The computation of lyapunov exponent with different parameters shows that there were double periodic, almost periodic and chaotic motion behavior in this system. Effect of parameter on periodic and chaotic motion of system was studied using Mathematica.
Keywords: engineering mechanics；rain-wind-induced vibrations；normal form；Lyapunov exponent；period motion；chao

Title: A constitutive model of elastic-plasticity at infinitesimal strain for singular yield suface

Authors: MAO Anxiong, CHEN Liangsen
PP: 1001～1006
Abstract: The situation of singular yield surface are very common in the research of constitutive relation of geo-materials, for example, two-yield-surface soil model, four-parameter concrete model, and so on. But the theory of elastic-plastic constitutive is generally suitable for regular yield surface. It is not suitable for singular yield surface. This paper discusses the yield function, loading unloading criterion and constitutive equation of Lagrangian finite deformation elastic-plasticity theory. Finally, Lagrangian finite elastic plasticity theory is used on constitutive models of elastic-plasticity at infinitesimal strain, and the complete constitutive relation for singular yield surface theory is obtained. This paper are integrated into the Lagrangian theory of elastic-plastic constitutive, and is significant for the research of constitutive relation of geo-materials.
Keywords: solid mechanics；finite deformation；back stress；infinitesimal strain；singular yield surface

Title: Study of finite element model updating of flexible body

Authors: LI Weiming, HONG Jiazhen
PP: 995～1000
Abstract: Techniques of dynamic model updating was important for setting up an accurate model of a mechanical system. This paper proposes an improved minimum norm method based on the damage detection of the residual force vector. By using the QR decomposition method, the mode mixed with noise is eliminated in matrix inverse process, reducing the impact of noise during the model updating. Using the thinking of two-step method in the course of model updating, this paper obtains the error location of the model for the first step, and achieves the approximately accurate error localization that is adding physics boundary condition for model updating. Then on the basis of this amendment, they can have better model updating results. Theoretical model obtained by the model updating has a higher confidence level which can be better serving for engineering technology.
Keywords: structure dynamic；model updating；damage detection；residual force vector；noise

Title: Snap buckling between delaminated electrode and piezoelectric layer with finite thickness under pure bending

Authors: YANG Changjin, LI Yaochen
PP: 981～994
Abstract: Based on the finite displacement theory of elasticity and the biasing field theory of the electro-elastic body, the paper analyzed electrode delamination buckling of the layered system with finite thickness containing a through-the-width delamination between the metallic electrode and the piezoelectric layer. In the plane strain problem, layered system subjected to the pure bending load is reduced to a system of homogeneous Cauchy-type singular integral equations of the second kind by means of the Fourier integral transform，boundary condition and interfacial continuous condition. The singular integral equations are solved numerically by utilizing Gauss-Chebyshev integral formulae. As an example, the finite sized layered system of the metallic electrode material Pt and piezoelectric material PZT-4 is considered. Numerical results for the critical buckling bending moments and corresponding delamination buckling shapes are presented for various ratios of the delamination length to thickness.
Keywords: solid mechanics；electrode delamination；buckling；Fourier integral transform；singular integral equations；critical strains

Title: Stationary response of multi-degree-of-freedom dissipated Hamiltonian systems under Poisson pulses

Authors: WU Yu, ZHU Weiqiu
PP: 973～980
Abstract: The paper studied the stationary probabilistic and statistical characteristics of multi-degree-of-freedom (MDOF) dissipated Hamiltonian systems driven by random pulses. The pulse model adopted is Poisson white noise. The approximate stationary probability density functions and mean square values for the response of MDOF dissipated Hamiltonian systems to Poisson white noise are obtained by solving the four-order generalized Fokker-Planck equation using perturbation approach. As an example, two Duffing oscillators coupled with linear and nonlinear stiffness terms are investigated. It is shown that the non-Gaussian behavior depends on the product of the average arrival rate of the impulses and the relaxation time of the oscillator. The validity of this approach is confirmed by experimental results obtained by Monte Carlo simulation.
Keywords: engineering mechanics；Poisson white noise；perturbation approach；dissipated Hamiltonian system；probability density function；generalized Fokker-Planck equation

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