国际农产品价格如何影响了中国农产品价格?

本文使用月度数据考察国际农产品价格是否影响中国农产品价格,以及影响程度和可能的影响机制。在控制了其他影响因素的条件下,本文证实了国际农产品价格对国内价格具有经济意义上的显著影响,各种农产品的国内价格对相同产品国际价格的反应程度存在较大差异,玉米、大米和大豆价格的国际价格弹性介于0.20到0.36之间,小麦的国际价格弹性为0.05左右,国内外农产品市场间高度的整合关系主要是通过国际贸易建立的。中国在未来为保持粮价稳定需要加大对农业的扶持力度,加强国内农产品储备,合理地对农产品贸易进行管制,建立农产品价格预警机制,并通过财政补贴等手段平抑因国际价格波动而带来的国内农产品价格上涨。     

要素空间优化、宏观经济增长与通货膨胀

经济平稳增长和物价稳定是人们追求的理想目标,然而现实中难以同时兼得。经济下滑和高通货膨胀是人们最为担心的事情。一旦经济下滑就很难恢复,同样地,一旦形成了高通货膨胀,就很难使其下降。本文从全新的空间视角下分析经济增长和通货膨胀。文章发现要素区际理性流动不仅能带来区域经济和宏观经济的增长,而且能抑制通货膨胀。这一结论为我们运用非紧缩性财政政策和货币政策解决高通货膨胀问题,尤其是“滞胀”问题,提供了理论基础。     

企业并购后的业务流程整合模式及其适用性——一个多案例研究

对并购双方业务流程进行整合和重组是并购后企业能够有效运行并获得协同效应的必要途径.根据多案例研究,以业务流程整合涉及的范围与整合的幅度作为决定变量,总结出五种业务流程整合模式:全面—移植模式、全面—新设模式、局部—移植模式、局部—新设模式与维持模式.对上述案例进行深入分析可知,并购双方业务的关联性与双方能力的差异性是选择业务流程整合模式的主导性因素,在两者综合作用下,不同并购类型与不同的业务流程整合模式相对应.企业并购后的经营战略与组织结构等因素也会对整合模式的选择产生一定程度的影响.     

我国城乡一体化存在的问题、反思及解决对策

我国城乡一体化进程中存在的主要问题是:农业和非农业劳动生产率之间的差异较大、城乡劳动力素质存在较大差异、城乡固定资产投资差距巨大、城乡土地资源收益差距较大等.观念落后、政府职能不完善、政策法规不完善、现存城市化畸形、城乡利益调整矛盾逐渐突出等制约城乡一体化进程.因此,现阶段,推进城乡一体化战略主要着力点是城乡规划一体化、城乡产业一体化等.     

区域经济一体化伙伴国的经济发展水平与本国经济增长关系的实证分析

本文以1990-2005年间的41个国家为样本,对区域经济一体化伙伴国的经济发展水平与本国经济增长的关系进行了实证分析。研究结果表明,区域经济一体化伙伴国的经济发展水平与本国经济增长呈正相关关系,而伙伴国相对经济发展水平对于本国经济增长的促进作用更为明显;参与不同的区域经济一体化模式对本国经济增长有不同的影响,即参与南--北型和北--北型区域经济一体化有利于经济增长,参与南--南型区域经济一体化对经济增长的影响尚不确定。     

Rule Making in Pursuit of a Single European Market

The paper explores the nature of rule systems in the Single European Market. It investigates the influence of firms in the legislative process and examines corporate responses in rule-governed conditions within the Single Market. It demonstrates that there have been very diverse outcomes for different sectors as a result of the manner in which rules have been formulated and implemented, and derives interpretations which may have a future bearing on the revision and refinement of Single Market legislation     

"孤独"的东亚与其区域经济一体化的发展路径

20世纪90年代以来,世界范围内的区域经济一体化掀起了新一轮的发展浪潮。东亚地区区域经济一体化进程却步履蹒跚,相对滞后。本文拟对东亚区域经济一体化的趋势和进程及其相对滞后的原因作一较为客观、深入的探讨,并对其未来可能的发展路径提出自己的见解。     

A New Indicator of European Integration and an Application to Collaboration in Scientific Research

The goal of this study is to develop a comprehensive indicator of integration among countries within a supranational system. Integration is not analysed in terms of the growth in interactions among countries, but in terms of the matrix distribution of interactions among countries. Integration can then be indicated in terms of interaction biases among countries measured by the difference between the observed matrix distribution and the hypothetical random distribution. The indicator is applied to data on research collaborations among European research institutions (1993-2000). Evidence is found that the European science system has indeed become more integrated. The higher level of integration has resulted exclusively from a more evenly distributed pattern of European collaborations, while the strong bias towards intra-national collaborations persisted. The results point to the persistence of national science systems. A future research agenda and science policy implications are discussed.     

Strategic Rivalry With Spillovers Within Segmented Versus Integrated Markets

We consider a two-stage game with firms investing in R&D in the first stage while competing [a] la Cournot in the second stage. The firms are located in two countries, which are either segmented or integrated. R&D spillovers occur between firms located in the same country as well as between firms located in different countries.

We first examine the consequences of market integration on the impact of national and international R&D spillovers on innovative efforts, effective R&D, profits and total welfare. Comparing the resulting equilibrium levels, we subsequently conclude that market integration always leads to higher R&D investments and output if international R&D spillovers are limited, while the welfare consequences are ambiguous. Finally, we also analyze the welfare maximization problem of a ‘constrained social planner who can only decide on the level of R&D spillovers.     

Local risk factors in emerging markets: Are they separately priced?

We provide new evidence on the pricing of local risk factors in emerging stock markets. We investigate whether there is a significant local currency premium together with a domestic market risk premium in equity returns within a partial integration asset pricing model. Given previous evidence on currency risk, we conduct empirical tests in a conditional setting with time-varying prices of risk. Our main results support the hypothesis of a significant exchange risk premium related to the local currency risk. Exchange rate and domestic market risks are priced separately for our sample of seven emerging markets. The empirical evidence also suggests that although statistically significant, local currency risk is on average smaller than domestic market risk but it increases substantially during crises periods, when it can be almost as large as market risk. Disentangling these two factors is thus important in tests of international asset pricing for emerging markets.