中欧贸易与欧盟技术性贸易壁垒

近年来,技术性贸易壁垒(TBT)已成为发达国家实施贸易保护主义更为隐蔽、更为有效的手段.作为中国第三大贸易伙伴的欧盟,其实施的各种TBT措施对中国的出口产品产生了严重的影响.因此,必须建立欧盟技术性贸易壁垒预警机制,时时监控其新动向;坚持"以质取胜"的原则,大搞技术创新和产品创新,以更高的产品质量标准和专利注册超越其贸易壁垒.     

中国服务出口比较优势与出口结构的变化——基于显示性比较优势指数的实证分析

20世纪80年代以来,中国服务出口有了长足的发展,在全球的位次也大大提升。但是,以改良的显示性比较优势指数为基础的分析表明,中国的服务出口在整体上仍然不具备比较优势。具体观察各个服务部门可以发现,旅游服务的比较优势有较大提高,运输服务从具有比较优势变为不具有比较优势,其他服务虽然处于劣势地位,但这种劣势在不断减弱。从出口结构来看,中国服务出口从80年代的以运输服务为主转变为目前的以旅游服务为主,运输服务的出口比重迅速下降,而旅游服务的出口比重则大幅提高。     

中国入世后经济发展战略模式的再思考

中国入世标志着中国在走向经济全球化的道路上又迈出了关键的一步。经济全球化已成为一种不可逆转的趋势 ,现正在深刻地影响着整个世界经济运行方式 ,通过改变外部环境影响着每个国家特别是发展中国家的经济发展战略的选择和实施。尽管我国改革开放 2 0多年来实施的出口导向战略成功地发展了我国的经济 ,但是入世和经济全球化程度的加深 ,使传统的发展战略受到了挑战。本文基于经济环境变化的分析 ,提出全球化发展战略以充分利用经济全球化带来的有利的外部条件和环境。     

我国企业进出口行为与汇率关系的实证研究

本文采用协整方法分析了人民币实际有效汇率对我国企业进出口行为的影响,进而研究了人民币实际有效汇率、GDP对进出口影响的短期动态调整机制。研究结果表明,从长期来看,进出口方程的各个经济变量之间存在协整关系,即各个变量之间存在长期均衡。这说明人民币实际有效汇率对我国进出口有一定的影响,但影响相对较小,我国汇率的变化对进出口的调节作用有限。     

A note on the projection properties of Hadamard matrices obtained by the first Payley construction

We show that the projections on four factors of an arbitrary orthogonal array of strength 2 allow the estimation of main effects and two-factor interactions when all other effects are assumed to be zero, if those projections satisfy the bounds given by Weils theorem. The only exceptions are the Hadamard matrices of orders 16 and 24. A consequence is again the estimability of main effects and two-factor interactions for the projections on four factors of the first Payley construction for arbitrary run size.     

How many voters are needed for paradoxes?

Summary. This paper presents a general procedure for finding profiles with the minimum number of voters required for many important paradoxes. Borda's and Condorcet's classic examples are revisited as well as generalizations. Using Saari's procedure line, we obtain an upper bound for the minimum number of voters needed for a profile for which the Condorcet winner is not strictly top ranked for all weighted positional procedures. Also we give a simple upper bound on the minimum number of voters needed for a set of prescribed voting outcomes. In contrast to situations wherein small numbers of voters are needed, we consider paradoxes requiring arbitrarily large numbers of voters as well as large numbers of alternatives. Finally we indicate connections with statistical rank based tests. Received: April 18, 2001; revised version: May 25, 2001     

On the evolutionary edge of altruism: a game-theoretic proof of Hamilton’s rule for a simple case of siblings

We offer a game-theoretic proof of Hamiltons rule for the spread of altruism. For a simple case of siblings, we show that the rule can be derived as the outcome of a one-shot prisoners dilemma game between siblings.JEL Classification: A13, C70, D64Correspondence to: Oded Stark, ZEF, University of Bonn, Walter-Flex-Strasse 3, 53113 Bonn, GermanyWe are indebted to an anonymous referee and to Uwe Cantner for helpful comments and suggestions. Partial financial support from the National Institute on Aging (grant RO1-AG13037) and from the Humboldt Foundation is gratefully acknowledged.     

On transaction efficiency and China’s Urban-Rural disparity

It is recommended for economists to examine China’s Urban-Rural disparity from the perspective of transaction efficiency, in that it can provide us with a systematic explanation to both the cases of different countries and development stages. China’s Urban-Rural disparity is special and virtually a demonstration of its special transaction efficiency structure. Exploration of China’s Urban-Rural disparity from such perspective indicates that, different from those in countries with a market economy, China’s case involves many exogenous and contrived factors. Therefore, the solutions are to improve the whole transaction efficiency in the economy, which includes eliminating its regionally unfavorable policies and institutions, and enforcing more favorable and regionally balanced institutional reforms. __________ Translated from Fudan Journal (复旦学报, Social Science Edition), 2006, (1) (in Chinese)     

控制权性质影响税收敏感性吗?——基于企业劳动力需求的检验

西方学者研究表明企业所得税是劳动力需求的重要影响因素,这一理论在中国是否适用?中国大部分上市公司为国有控股企业,这一特殊的制度背景是否会影响企业所得税与劳动力需求的关系?本文基于2007年企业所得税改革这一外生政策变化,在检验西方企业所得税与劳动力需求关系的理论在中国是否适用的基础上,就不同控制权的性质是否会影响企业劳动力需求的税收敏感性进行了检验。研究发现企业所得税税率降低和"就业税盾"增加提高了企业劳动力需求,但这种税率和"就业税盾"的变化对国有控股企业劳动力需求变化的影响要显著小于非国有控股企业。这表明税收是影响企业劳动力需求的重要因素,但国有控制权使得这种税收敏感性变弱。本文的研究结果不仅丰富了相关领域的国际学术文献,而且对我国就业政策的制定具有政策含义。     

论企业文化在塑造核心竞争力诸因素中的核心地位

本文借鉴7S模型分析了塑造企业核心竞争力的影响因素和途径,运用文献和案例论证了企业文化在塑造核心竞争力的各因素中居于核心地位,指出了塑造核心竞争力的途径是运用先进的企业文化培育和谐的7S体系。