产业融合产生过程的模型研究

根据自组织理论,产业融合产生的过程以融合型产品出现为标志,分为从无到有、从出现到实现两个阶段。文章结合单个产业发展模型,构建了产业融合产生过程的数学模型,并在此基础上运用数值模拟统计软件对产业融合产生过程的模型进行了验证。文章认为,产业融合模型的合理性及融合型产品的替代效应在产业融合的实现过程中起着关键作用。     

On uniform convergence of undiscounted optimal programs in the Mitra–Wan forestry model: The strictly concave case

In this paper, we show that the 1986 Mitra–Wan result establishing asymptotic convergence of maximal programs to the unique golden-rule forest in the case of undiscounted, strictly concave felicity functions can be strengthened, in the same setting, to the  uniform  asymptotic convergence of  optimal  programs to the unique golden-rule forest. We work with a notationally reformulated version of the model that may have independent interest.     

违约损害赔偿制度的比较法研究

英关普通法和大陆民法法系在违约救济措施上存在较大的差异。英美法院选择判决损害赔偿，充分发挥金钱的弥补作用；而大陆法系国家更多地是判令违约方实际履行。在司法实践中对违约损害赔偿的归类上，英美法系和大陆法系采纳的标准不同，但基本上可以划分为实际损害和期待利益的丧失两类。在对违约损害赔偿的目的、违约损害赔偿适用的限制上，两大法系在立法及司法上表现出极大的趋同倾向。     

International capital market integration: Implications for convergence, growth, and welfare

This paper studies the effects of international capital market integration on welfare and the speed of adjustment in a two-region endogenous growth model. Monopolistic firms undertake research and development (R&D) to improve their productivity level. National and international knowledge spillovers affect the returns to R&D. The two countries differ with respect to the initial productivity level and R&D capability (which is a proxy for human capital and structural policies). Long-run productivity gaps are determined by the difference in R&D capability. Over time, there is conditional convergence in productivity levels. The speed of convergence is larger with integrated international capital markets than without. Long-run gaps in consumption levels are larger in the former situation than in the latter. Capital market integration harms (benefits) the leading (lagging) region if domestic spillovers are more important than international spillovers and differences in R&D capabilities are small.The authors research is supported by the Royal Netherlands Academy of Arts and Sciences. He thanks Lucas Bretschger, Theo van de Klundert, and Richard Nahuis, Thomas Steger, and Helmut Wagner for comments on an earlier version.     

Discounting long run average growth in stochastic dynamic programs

Summary. Finding solutions to the Bellman equation often relies on restrictive boundedness assumptions. In this paper we develop a method of proof that allows to dispense with the assumption that returns are bounded from above. In applications our assumptions only imply that long run average (expected) growth is sufficiently discounted, in sharp contrast with classical assumptions either absolutely bounding growth or bounding each period (instead of long run) maximum (instead of average) growth. We discuss our work in relation to the literature and provide several examples. Received: July 26, 2000; revised version: July 10, 2002 RID="*" ID="*" I am specially grateful to Cuong Le Van and to anonymous referee for detecting an error in a previous version of this paper and for suggestions that sensibly improved the paper. Comments and suggestions are also acknowledged to Michele Boldrin, Raouf Boucekkine, Fabrice Collard, Tim Kehoe, Omar Licandro, and Luis Puch. I am also indebted to participants to the III Summer School on Economic Theory held at the Universidade de Vigo, the Macroeconomics Workshop at the Universitat Autò}noma de Barcelona, and the Econometrics Seminar at Tilburg University. Financial support from the Belgian government, under project PAI P4/01, at the IRES-UCL, from a European Marie Curie fellowship, Grant HPMF-CT-1999-00410, at the CEPREMAP, and from IVIE and Spanish Ministerio de Ciencia y Tecnología and FEDER, under project BEC2001-0535, at the Universidad de Alicante, is gratefully acknowledged.     

论会计趋同化与差异性

经济全球化和国际资本市场的持续发展,迫切需要会计信息可比性的提高,会计全球趋同遂成为跨国上市和发行证券及其监管的必然要求。会计趋同首先是形式趋同,即准则层面的趋同。会计形式趋同能否带来实质趋同,即会计实务的一致和会计信息的可比?移植的国际财务报告准则(IFRS)及与国际趋同的国家会计准则是否能够得到有效、一致的执行?特别是国际金融危机的爆发,引发了新一轮国家保护主义思潮。受到金融危机重创的国家,其企业在执行国际趋同的准则中极可能存在操纵行为,从而在一定程度上消减准则趋同的效果。为此,本文探讨了会计趋同化以及与之密切相关的差异性问题,并对本领域的研究及进展予以简要回顾,以期提起准则趋同下会计差异性的认识。     

Optimal International Taxation and Growth Rate Convergence: Tax Competition vs. Coordination

Optimal international taxation and its implications for convergence in long run income growth rates are analyzed in the context of an endogenously growing world economy with perfect capital mobility. Under tax competition (i) the residence principle will maximize national welfare; (ii) the optimal long run tax rate on capital incomes from various sources will be zero in all countries; and (iii) long term per capita income growth rates will be equalized across countries. Under tax coordination, (i) becomes irrelevant while (ii) and (iii) will continue to hold. In other words, optimal tax policies are growth-equalizing with and without international policy coordination. This revised version was published online in July 2006 with corrections to the Cover Date.     

京津冀协同发展背景下的金融聚集与经济收敛——京津冀城市群与长三角城市群的对比分析

利用2000—2014年京津冀城市群和长三角城市群的38个城市的空间面板数据,从金融聚集和经济收敛的视角,探讨了京津冀城市群的经济和金融发展失衡的深层次原因以及一体化背景下的协同发展路径,并将京津冀城市群和长三角城市群进行了对比分析。结果表明:两城市群的经济和金融呈不同的空间辐射模式;具体而言,京津冀城市群的金融效率和金融规模存在显著的σ收敛和β收敛,但是经济增长的σ收敛和β收敛不仅未呈现出趋同效应,反而表现出发散特征,表明河北在信贷投入不足的情况下仍存在严重的金融资源流失现象,金融对当地经济贡献微弱;与之形成鲜明对比的是,长三角城市群的金融效率和金融规模的σ收敛呈发散趋势,但其β收敛和经济增长的σ收敛和β收敛均呈现出趋同效应,表明长三角城市群金融聚集的溢出效应促进了邻近区域的经济增长。     

R＆D、R＆D溢出、内生增长和内生收敛

根据强调知识与技术创新、知识与技术溢出重要性的当代内生增长理论，本文建立了一个将R＆D和R＆D溢出与资本积累之间、R＆D和R＆D溢出与总产出增长之间直接关联起来的动态模型。面板数据协整检验实证分析结果表明R＆D和R＆D溢出与资本积累之间、R＆D和R＆D溢出与总产出增长之间分别存在显著的正面长期协整关联。进一步的分析表明，R＆D与资本积累之间、R＆D与总产出增长之间分别存在显著的长期双向格兰杰因果关系。由此观知，R＆D乃长期经济增长源泉之所在。另一方面，尽管资本积累或总产出增长并不格兰杰导致R＆D溢出，证据表明R＆D溢出格兰杰导致资本积累和总产出增长。这种由R＆D溢出到资本积累和总产出增长的单向格兰杰因果关系意味着尽管知识与技术的跨国传播并非必然发生。其实为世界经济增长的重要动力。     

Yen or Yuan? The law of one price and economic integration in Asia

Using highly comparable local retail prices of 146 goods and services across 18 Asian countries over 1990–2014, we analyse price dispersion and test convergence to the law of one price (LOP ) for these prices around three price benchmarks—Asia‐average, Japan and China prices—to gain insight about market integration in overall Asia as well relative integration of Asian economies to Japan and China. Cross‐Asia price dispersion around China‐price benchmark, for both tradables and non‐tradables, diminishes significantly over the sample period whereas that around Japan‐price benchmark increases considerably, particularly after the 2008 crisis. There is convergence to the LOP for about half of goods and services in China‐ and Asia‐average price benchmarks. The percentage of convergent prices is significantly smaller in Japan‐price benchmark. Direct estimates of the convergence speed parameter also confirm these observations. Overall, our results show evidence of increasing economic integration in Asia in the last two decades. The process of price convergence appears to be driven by the emergence of China as the centre of economic gravity in the region. There is much room for improvement as economic integration in Asia is still far below that in Europe in the 1990s or USA in the 1980s.