不对称R＆D活动下的市场绩效分析——基于有差异产品的寡头市场

为了研究在Stackelberg寡头竞争模型下企业在产品市场是否合作对市场绩效的影响,建立了寡头市场中面向R＆D工艺的两阶段博弈模型。采用逆向归纳法求出了产品市场合作与不合作两种情况下的古诺-均衡解。研究表明,从促进技术进步的角度来看,对于R＆D效率不太高的R＆D项目,产品市场合作策略优于产品市场竞争策略。从提高企业利润的角度来看,对于R＆D效率较高的R＆D项目,当产品差异不大时,产品市场合作策略优于产品市场竞争策略;当产品差异较大时,产品市场竞争策略优于产品市场合作策略。对于R＆D效率较低的R＆D项目,产品市场竞争策略优于产品市场合作策略。从提高消费者剩余以及改善社会福利的角度来看,对于R＆D效率较低的R＆D项目,产品市场竞争策略优于产品市场合作策略。     

Evidence disclosure and verifiability

We explore the notion of “verifiability” by analyzing a simple model of evidence production in contractual relationships with complete information. We characterize implementability in terms of the existence and form of “hard evidence.” We provide results on maximal and minimal evidence production that are, respectively, necessary and sufficient for implementation. We briefly discuss the relevance of our results to actual legal institutions.     

REGIONAL GDP IN BRITAIN, 1871–1911: SOME ESTIMATES

The paper builds on a method proposed by Geary and Stark for estimating regional incomes in Victorian Britain. This is modified by using tax data to allocate non‐wage income across regions. The results suggest that the coefficient of variation of regional GDP per head was rising rapidly prior to World War I in similar fashion to the late 20th century such that its level in 1901 and 2001 was about the same. In both episodes of globalization there were big winners and big losers among British regions.     

Euro area sovereign yield spreads as determinants of private sector borrowing costs

We regress long-term private-sector borrowing rates on a money market rate, a term premium and credit risk. As a contribution to the current debate about European safe assets, our interest is in quantifying the impact of euro area sovereign bond spreads on private-sector lending by employing it as a proxy for private-sector credit risk. Panel estimates show significant, albeit rather small long-run effects. Another finding is large cross-country heterogeneity. Using linear country-specific estimates, we find the effect to be significant in only some countries, but the size of the maximum effect in these countries exceeds the average one more than three-fold. Furthermore, for one country, we find an asymmetrical effect with positive spread changes having greater impact on private-sector borrowing costs than negative ones. Substantial heterogeneity of the spillover effect between euro area countries indicates the presence of financial valuation effects based not only on economic fundamentals. This, in turn, implies that spillovers may entail contagion costs. Overall, our results suggest that these costs are considerable in the euro area and will remain so until an effective form of European safe assets is created.     

Foreign direct investment and economic growth: Is more financial development better?

We investigate the extent to which an increase in financial development affects the positive effect of foreign direct investment on economic growth. Although the financial sector is beneficial for economic growth, the effect of further financial development on growth is found to become insignificant. Using a dynamic panel threshold model on 62 middle- and high-income countries spanning the period 1987–2016, we re-examine the possible nonlinearity between finance, foreign direct investment, and growth. Consistent with the “vanishing effect” of financial development, we find significant evidence that foreign direct investment fosters growth in general, but the growth effect of foreign direct investment becomes negligible when the ratio of private sector credit to gross domestic product exceeds 95.6%. This finding is robust to different econometric methods, various subsamples and interaction analyses, and distinct financial development indicators.     

The (hidden) costs of political instability: Evidence from Kenya's 2007 election crisis

This paper studies the microeconomic impacts of the political crisis and civil conflict that immediately followed the December 2007 presidential election in Kenya. Income, expenditures, and consumption dramatically declined for a broad segment of the rural population for the duration of the conflict. To make up for the income shortfall, women who supply transactional sex engaged in higher risk sex both during and after the crisis. While this particular crisis was likely too short for these behavioral responses to seriously increase the risk of HIV or other STIs for these women, such responses could have long-term repercussions for health in countries with longer or more frequent crises. Overall, our results suggest that social unrest can be an important channel through which political instability can affect long-term outcomes such as health.     

OUTPUT,OUTCOME, AND QUALITY ADJUSTMENT IN MEASURING HEALTH AND EDUCATION SERVICES

This paper provides an overview of measuring price and volume changes of the output of health and education providers. In the national accounts, outputs should reflect the results of production and these cannot normally be captured by outcome, the state of health or education of the population. However, we show that outcome information is required when it comes to quality adjustment of output measures. The paper clarifies terminology, and discusses output measurement and quality adjustment methods with a focus on health and education services.     

Investigating regional house price convergence in the United States: Evidence from a pair-wise approach

In this paper we examine long-run house price convergence across US states using a novel econometric approach advocated by Pesaran (2007) and Pesaran et al. (2009). Our empirical modelling strategy employs a probabilistic test statistic for convergence based on the percentage of unit root rejections among all state house price differentials. Using a sieve bootstrap procedure, we construct confidence intervals and find evidence in favour of convergence. We also conclude that speed of adjustment towards long-run equilibrium is inversely related to distance.     

企业自主创新中R＆D的绩效评价

R＆D绩效评价是R＆D财务控制的重要环节,考虑到绩效指标评价体系的易操作性。结合R＆D活动投入产出特点,设计R＆D绩效状况评价指标体系,将改进的“拉开档次”综合评价法运用到企业R＆D绩效评价中,通过计算各年的综合评价系数从而对企业连续会计期间的R＆D活动绩效做出客观的评价,从而制定出提高企业R＆D绩效的对策。     

Racial Harassment,Ethnic Concentration,and Economic Conditions*

In this paper, we analyse the association between the spatial concentration of ethnic minorities and racial harassment. Ethnic concentration relates to racial harassment through at least three channels: hostility in the attitudes of majority individuals that finds expression in harassment behaviour, the probability that minority individuals meet majority individuals, and the cost of expressing hostility aggressively. Thus, harassment cannot simply be modelled as a stronger form of hostility. Using unique data for Britain, we show that, in areas of higher local ethnic concentration, experience of harassment is lower, even though hostility on the side of the majority population is not.