全球经济危机对国际电子商务的影响

全球经济危机爆发,国际电子商务交易成长性、成本低、环节少等优势显现,但同时电子商务还面临挑战,表现为经济危机挑战电子商务管理模式、网络交易安全性、市场信用以及一些历史遗留问题。     

中国服务业发展悖论——基于“两波”发展模式的研究

本文借鉴最新文献对服务业发展规律的测度方法,用中国1952—2010年的地区面板数据对我国服务业比重变化的长期规律和阶段性特征进行了测度,结果认为:宏观国家层面上,我国服务业比重的变化确实有悖于世界经济整体服务化的趋势;但在地区层面上,我国服务业比重与人均GDP的关系基本符合"服务业比重随经济发展不断上升"的普遍规律,所谓经济服务化的"中国悖论"在地区层面上并不存在;对服务业发展的阶段性特征和地区差异进行分析发现,我国大部分地区仍然处于以传统服务业为主的第一波发展阶段,只有少数地区进入了以现代服务业发展为主导的第二波。文章最后对我国服务业发展规律的成因进行了一般分析和实证检验。     

On the discrete mean past lifetime

Let T denote a positive discrete survival time and n a non-negative integer number. Properties of the mean past lifetime E(n  −  T|T  <  n) are provided. M. Asadi’s work is supported by the University of Isfahan Grant 850713.     

Logarithmic quasi-homothetic preferences

We study a class of quasi-homothetic preferences, which result in demands that are logarithmic in own prices when these have a negligible impact on aggregate prices (as in monopolistic competition models). Thus marginal revenues are computationally friendly and well behaved.     

水泥稳定碎石的作用原理及在公路施工中的应用

水泥稳定碎石作为路面基层,具有早期强度高,雨季对施工影响相对较小,施工机械化程度较高等特点,这些都有利于保证进度和质量,因此被越来越广泛地应用到市政道路工程中去。为此,本文针对城市道路半刚性基层采用水泥稳定碎石的技术研究进行简要分析,以供参考。     

Economic reforms,efficiency and productivity in Chinese banking

This paper analyzes the impact of banking reforms on efficiency and total factor productivity (TFP) change in Chinese banking industry. Using an input distance function, we find that joint-equity banks are more efficient than wholly state-owned banks (WSOBs). Furthermore, both WSOBs and joint-equity banks are found to be operating slightly below their optimal size, suggesting potential advantages in expansion of their businesses. Overall, TFP growth was 4.4% per annum for the sample period 1993–2002. Joint-equity banks experienced much higher growth in TFP (5.5% per annum) compared to the WSOBs (1.4% per annum).      

Comment on “The endogenous aggregate elasticity of substitution for a small open economy”

This note applies the approach of Miyagiwa and Papageorgiou [Miyagiwa, K. and Papageorgiou, C., 2007. Endogenous aggregate elasticity of substitution. Journal of Economic Dynamics and Control 31, 2899–2919] to provide simple frameworks for endogenizing the aggregate elasticity of substitution between capital and labor for a growing small open economy.     

The Needham puzzle,the Weber question,and China's miracle: Long-term performance since the Sung dynasty

This paper attempts a brief overview of China's economic performance since the Sung dynasty. It discusses Chinese long economic stagnation since the Sung dynasty and explores the reasons why it was quickly lagging behind western countries from the 1800s. It explains why the industrialization and modernization led by Chinese government from 1949 to 1978 failed in narrowing the gap between China and the developed countries. It examines Chinese rapid economic growth during its reform and opening up period.     

健康、教育与经济增长

健康与教育是人力资本诸多形成方式中最重要的两种,长期以来内生增长理论强调和重视教育人力资本对于经济增长的贡献和作用,但健康与教育之间的相互影响以及健康人力资本对于经济增长的作用却未得到应有的重视。基于此,本文在Lucas(1988),Van Zon和Muysken(2001)模型基础上,构建了一个包含最终产品、健康和教育的三部门模型。静态均衡、转移动态和仿真实验的结果表明:在总体人力资本的形成过程中,健康对广义人力资本的贡献份额大于教育;健康的增量而非健康人力资本存量水平有利于长期经济增长;健康的改善必须同时辅以教育人力资本的提高才能促进经济增长;政府公共健康支出对于健康人力资本的形成具有重要作用,有助于促进发展机会的均等和减贫;重视人力资本积累的经济体在10-15年后会呈现明显的经济绩效的改善。