河南省人力资本与经济增长的实证分析

利用河南省1978—2005年的相关数据,根据卢卡斯人力资本的外部性内生经济增长模型,运用SPSS软件对相关数据进行回归分析,得出了河南省人力资本存量、资本存量和人力资本水平的产出弹性,并在此基础上,计算人力资本平均增长率,以此分析人力资本对经济增长的贡献率.     

四川人力资本与经济增长的实证研究

从人力资本外部性作用的角度来阐明人力资本水平对经济增长的重要作用。选取卢卡斯的人力资本溢出模型,通过采集和计算四川省1978—2010年GDP、固定资产投资、人力资本存量和平均受教育年限的数据,运用ADF单位根检验、Granger因果检验、协整分析以及误差修正模型进行实证研究。结果表明:人力资本存量的增长速度虽然高于人力资本水平的增长速度,但是人力资本水平的贡献率却高于人力资本存量的贡献率,即劳动者质量增长所起的作用明显高于劳动者数量增长所起的作用。     

教育、人力资本与广东省经济增长

利用卢卡斯人力资本外部性内生经济增长模型，结合广东省1978－2009年相关数据，分析了物质资本和人力资本对广东省经济增长的贡献，并通过对不同时期贡献率的分析，具体考察了广东省经济增长的模式，结合当前形势对广东省经济增长模式的转型提出了相应的建议。     

人力资本与经济增长

讨论一个在Uzawa-Lucas框架下的带有人力资本的确定性内生增长模型,在这里平均人力资本带有一个积极的外部作用．在这个模型中假设生产函数采用的是CES（常数替代弹性）函数,并且分析了均衡的存在性、唯一性和稳定性,得到了一个能够为获得最优竞争均衡提供所需刺激的财政政策．为了纠正由外部性造成的市场失灵,引入人力资本存量的补贴,并且分析了最优增长路径．     

四川创新型人力资本与经济增长的实证分析

使用创新型人力资本以受教育程度为计量标准,通过单位根检验、协整分析方法和VAR模型,分析四川创新型人力资本存量与经济增长的关系以及创新型人力资本水平与产出水平的关系。结果表明,虽然四川创新型人力资本存量与经济增长之间存在长期的均衡正向关系(即创新型人力资本每增加1%,产出可增加0.752%),但是创新型人力资本水平对产出水平还不是很明显(即创新型人力资本存量对经济增长的影响还比较低)。最后,提出四川人力资本投资的相关对策建议。     

我国人力资本对经济增长贡献的静态指标体系研究

首先对所采用的基本模型柯布-道格拉斯函数进行阐述，然后通过对有关历史散据的分析和应用，提出用以衡量我国人力资本对经济增长贡献的静态指标体系．并用统计回归的方法得出结论：①1978-2000年中国经济增长的较大部分比例是由生产要素投入的增加带来的，体现出经济增长的粗放型特征;②人力资本存量和平均受教育年限对产出的贡献率为正值，但贡献率比较低，不仅与发达国家有很大的差距，而且与发展中国家也有一定的差距。并对结论进行解释．     

优化教育投资结构提高人力资本投资效率

教育是人力资源开发的重要途径，教育投资则是人力资本投资的重要组成部分。由于教育投资对经济增长的贡献份额都远远高于物质资本，因此，我国在不断加大教育投资的同时，应注重优化投资结构，提高我国人力资本的投资效率，不断加强我国人力资本的存量和质量。     

浙江省经济增长中各生产要素的贡献分析

改革开放以来,浙江省经济快速发展,发展速度居全国前列,其原因是多方面的。本文从人力资本理论出发,以柯布--道格拉斯生产函数为理论模型,收集和整理了备有关数据,包括浙江省的GDP总量、物质资本存量、从业人员数和人力资本存量四个方面,并运用有关数据得出了浙江省的生产函数回归方程,在此基础上分析各生产要素对浙江省的经济增长的贡献。     

福建人力资本配置对经济增长影响的实证分析

通过与我国东部地区的比较,实证分析1985—2010年福建人力资本配置对经济增长影响。计量分析结果表明:福建人力资本存量是经济增长的重要影响因素,但人力资本对经济增长贡献率低于东部地区平均水平;福建人力资本代替物质资本的边际技术替代率为0.58,明显低于东部地区(0.67),依据区域人力资本最优配置标准可得出结论,福建人力资本配置非均衡,且人力资本配置效率低于东部地区。在此基础上,提出优化福建人力资本配置促进经济协调快速增长的对策。     

西部农村人力资本存量与农业经济增长的关系研究——基于panel数据的实证研究

文章通过实证测算西部农村人力资本存量构成与农业经济增长的关系,认为农村人力资本存量的文化程度和农业经济增长呈反比。这主要是由于高学历、高素质的西部农村劳动力无法在传统的农业生产上体现出优势。西部大量低素质的农村剩余劳动力在实际测算中也挤占了高素质的农村人力资本对农业经济增长的贡献。为了改变这种局面,需要对农村劳动力进行职业技能培训教育。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

英文诗歌中的喻类修辞

为了有助于提高英文爱好者的个人情操、文化素养和学习兴趣,以及专业人员对英语学习和研究进行多途径的探索,本文通过一些精选诗歌的引证和分析,着重论述了喻类修辞法在英文诗歌中的运用其及效果。     

Man Is Unable to Change the Miserable Life——Analysis of the Arrangement of Four Characters in The Glass Menagerie

Tennessee Williams is considered as one of the most important American playwrights since World War II.The Glass Menagerie is his first successful drama,which describes a tragic situation of family and means to say that Man is unable to change the miserable life,no matter whatever means he try,This essay focuses on the analysis of the arrangement of the four main characters:Laura.Amanda,Jim and Tom to reveal the theme.Laura is fragile.Amanda is brave.Jim is vital.Tom is sensible.And all of them develop and try the different means to struggle against life,but fail tragically.With the evidence,the paper comes to conclusion naturally that Man is unable to change the miserable life,and he dooms to fail.     

Characterization of root-nodulating bacteria on Retama raetam in arid Tunisian soils

The aim of this study is to investigate the diversity of Retama raetam root-nodule bacteria isolated from arid regions of Tunisia. Twelve isolates, chosen as representative for different 16S rRNA gene patterns, were characterized by 16S rRNA gene sequencing and phenotypic analysis. Isolates were assigned to Sinorhizobium, Rhizobium and Agrobacterium. Symbiotic properties of Sinorhizobium and Rhizobium isolates showed a large diversity in their capacity to infect their host plant and fix atmospheric nitrogen. Strain RK 22 identified as Rhizobium was the most effective isolate.     

Features of Women''s language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Affordable Accurate Evaluation of the Binding Conformations Predicted by Molecular Docking Studies in Bio-System

正Recently,docking has been widely used to predict the binding-modes of protein-inhibitors,when the crystal complexes structure was absent.Most docking algorithms are able to generate a large number of probable conformations,it,however,is difficult to effectively evaluate these docking poses and identify the most reasonable bindingmode.In the present study,on the basis of the crystallographic data of human 3-hydroxy-3-methylglutaryl coenzyme