阿拉伯海湾国家经济一体化及面临的挑战

阿拉伯海湾地区丰富的石油资源和年进口达1000亿美元以上的市场令世界瞩目。海湾6国在20世纪80年代初建立地区经济组织——阿拉伯海湾国家合作委员会以来,为促进各国经济贸易共同发展做出了可喜成绩。进入21世纪,海湾六国又在经济一体化道路上迈出新的步伐,成为世人关注的焦点之一。     

A regression discontinuity approach to measuring the effectiveness of oil and natural gas regulation to address the common-pool externality

Oil and natural gas reservoirs typically span multiple productive leases so that no owner has rights to the entire stock of resource, resulting in production externalities. Previous literature has examined the effectiveness of government regulation in Texas and Oklahoma in abating these externalities, finding Oklahoma to be more successful in unifying common pools and securing property rights. Using regression discontinuity design, we quantify the impact of regulatory difference between the two states. We find that Oklahoma produces an average of 3361 more barrels of oil over the life of a well, relative to Texas. Given the maturity of the fields in question, the result underscores the continuing importance of addressing common pool externalities even after the primary phase of recovery has largely been completed.     

寻迹与反思——纪念《共同纲领》颁布60周年

1949年9月28日,中国人民政治协商会议第一届全体会议一致讨论通过了《中国人民政治协商会议共同纲领》,被称为新中国的大宪章,起到了临时宪法的作用。在《共同纲领》颁布60年之际,对其重新审视,予以反思,对我国当代的宪政建设不无启示。     

Critical resource: An institutional economics of the Internet addressing-routing space

This paper links the analysis of IP address policy to the established vocabulary and concepts of institutional economics. Internet addressing and routing are usually discussed in technical terms, yet embedded in this highly technical discourse are a number of critical economic concepts, such as scarcity, externalities, common pool resources, tragedy of the commons, and conflict over the distribution of costs. To solve these problems, governance institutions native to the Internet have evolved. Yet despite the centrality of addressing and routing to Internet governance, there is very little research literature that bridges economic, institutional and technical discussions of IP addressing and routing. This paper connects the techno-economic discussion to analysis of institutions and governance arrangements.     

Not Only Gender: More on Debating Markets

The paper by Gudeman and Gudeman on the nature of computer-mediated-communication (CMC) is a valuable contribution. This comment argues that they neglected one important aspect affecting CMC, namely ideology, and suggests that the ''Debating Markets'' exchange had long-term negative impacts on Femecon.     

New tips from TIPS: Identifying inflation expectations and the risk premia of break-even inflation

This paper decomposes the break-even inflation rates derived from inflation-indexed bonds into inflation risk premia, liquidity risk premia, and inflation expectations. I estimate a common factor model with autoregressive conditionally heteroscedastic (ARCH) errors that extracts co-movements from twenty-two monthly and quarterly indicators to identify these three components. The results indicate that the sharp declines in the 10-year and 5-year break-even inflation rates in 2009 reflect a substantial increase in liquidity risk rather than a decrease in inflation expectations. Break-even inflation rates underestimate inflation expectations over nearly the entire sample due to the liquidity risk premia carried by the inflation indexed bond yields. Also, the model-implied inflation expectations show better forecast performance for the average annual inflation rates than raw break-even inflation rates, the Survey of Professional Forecasters, and the Surveys of Consumers inflation forecasts.     

农产品共同品牌的不稳定性及维护

本文分析了农产品共同品牌的作用及特点,并分析了共同品牌产生内部不稳定性的原因,主要在于共同品牌的使用具有外部性,使生产者产生机会主义倾向,降低产品质量并且对品牌质量提高的激励不足。本文认为维护共同品牌的必要条件是生产者能够获得必要租金以及能够被相对确认。     

The Spatial Durbin Model and the Common Factor Tests

Abstract

The spatial Durbin model occupies an interesting position in the field of spatial econometrics. It is the reduced form of a model with cross-sectional dependence in the errors and it may be used as the nesting equation in a more general approach of model selection. Specifically, in this equation we obtain the common factor tests (of which the likelihood ratio is the best known) whose objective is to discriminate between substantive and residual dependence in an apparently misspecified equation. Our paper tries to delve deeper into the role of the spatial Durbin model in the problem of specifying a spatial econometric model. We include a Monte Carlo study related to the performance of the common factor tests presented in the paper in small sample sizes.     

The effects of EU agricultural policy changes on farmers' risk attitudes

This analysis utilises a model of production under risk estimatedon Finnish farm-level data to measure farmers' risk attitudesin a changing policy environment. We find evidence of heterogeneousrisk preferences among farmers, as well as notable changes overtime in farmers' degree of risk aversion. This result is dueto the increase in the non-random part of farm income generatedby the policy change after Finland's European Union accession.The analysis confirms the assertion that agricultural policiesthat are decoupled from production do affect input use and cropmix through their effect on farmers' risk attitudes.     

我国铁路客运专线42号道岔运输方案研究

我国客运专线所采用的42号道岔,由于其超长特性和弹性钢轨与刚性辙叉的组合特性,给运输方案的制订提出更高的技术要求。借鉴普通平车装运长钢轨的运输技术,经过理论计算,研究制订了普通平车装运42号道岔的运输方案。该方案的研制和应用为客运专线大型道岔的铁路运输探索了一种新的运输方式,对货物运输装载加固技术的创新和发展具有积极的推动作用。