Revealed preferences for portfolio selection – does skewness matter?

In this article, we consider the portfolio selection problem as a Bayesian decision problem. We compare the traditional mean–variance and mean–variance–skewness efficient portfolios. We develop bi-level programming problem to investigate the market’s preference for risk by using observed (market) weights. Numerical experiments are conducted on a portfolio formed by the 30 stocks in the Dow Jones Industrial Average. Numerical results show that the market’s preferences are better explained when skewness is included.     

REVISITING GLOBALIZATION CHALLENGES AND OPPORTUNITIES IN THE DEVELOPMENT OF COOPERATIVES

Cooperatives have gained prominent attention in recent years as strategic elements to achieve sustainable economic development and greater social cohesion in the context of neoliberal globalization. This article explores, theoretically, the current challenges and opportunities for cooperatives to develop successfully in the globalizing economy. To this end, we provide an analytical, critical review of the key bibliography concerning some fundamental aspects that shape the relationship between economic globalization and cooperatives, an issue that has been generally neglected by previous literature. Three key fields are addressed: 1) the viability of cooperatives, based on their strengths and possible weaknesses, under current globalization; 2) the role of these organizations in promoting the local development and stability of local communities; and 3) the tensions and potentialities that internationalization entails for cooperatives. Based on the analytical review and the organization of the literature, we propose an agenda for further research. This includes some hypotheses and strategies for testing them that would be essential to assess the role of cooperatives in economic globalization, and sheds light on key areas for future research that could provide a better understanding of the complexity surrounding the relationship between globalization and cooperatives.     

地方政治权力转移与企业社会资本投资周期--基于政企关系重构的动态研究

文章以2007－2012年我国A 股上市公司为样本,从政企关系重构的视角研究了地方政治权力转移对企业社会资本投资的影响。研究发现：(1)在地方政治权力转移当年,企业会显著提高社会资本投资力度。随着主政官员任期的增加,企业社会资本投资呈现下降趋势。这说明在主政官员任期内,企业社会资本投资呈现先增后减的周期性特点。这种周期性特点仅在民营企业中存在。(2)民营企业社会资本投资的周期性特点在地方官员来自外地、继任官员预期任期较长、管制行业以及融资约束程度高和无政治关联的企业样本中更加显著。(3)在地方政治权力转移当年,民营企业提高社会资本投资力度能够帮助其获得政府补助,但这种优势并不会立刻体现出来;同时,企业提高社会资本投资力度也会对自身的研发投入产生挤出效应,且挤出效应持续存在于继任官员的整个任期中。文章的研究为理解企业建立政企关系的手段、过程与效果提供了新的视角。     

A dynamic Nelson-Siegel yield curve model with Markov switching

This paper proposes a model to better capture persistent regime changes in the interest rates of the US term structure. While the previous literature on this matter proposes that regime changes in the term structure are due to persistent changes in the conditional mean and volatility of interest rates we find that changes in a single parameter that determines the factor loadings of the model better captures regime changes. We show that this model gives superior in-sample forecasting performance as compared to a baseline model and a volatility-switching model. In general, we find compelling evidence that the extracted factors from our term structure models are closely related with various economic variables. Furthermore, we investigate and find evidence that the effects of macroeconomic phenomena such as monetary policy, inflation expectations, and real economic activity differ according to the particular regime realized for the term structure. In particular, we identify the periods where monetary policy appears to have a greater effect on the yield curve, and the periods where inflation expectations seem to have a greater effect in yield determination. We also find convincing evidence of a relationship between the regimes estimated by the various switching models with economic activity and monetary policy.     

区域协同视角下长江经济带产业绿色发展研究

在长江经济带建设进程中,推动产业绿色发展及区域协同是破解资源、环境约束的重要突破口。基于非径向非角度SBM分析建立动态Malmquist模型,运用2000-2014年面板数据测算长江经济带产业绿色效率指数、效率变化指数、技术进步指数。在分析长江经济带时空分布的基础上,将其周边的11个省市划分为4个联盟,并对产业合作博弈过程中产业利益帕累托改进及其合作边界进行了探讨。最后,从区域协同视角出发,根据不同产业协作联盟,从空间合作策略、政策机制等方面提出了相关建议。     

创新型企业柔性:区域差异与空间效应

根据创新型企业特点构建创新型企业柔性评价指标体系,基于突变级数法对2009-2015年我国内地30个省（自治区、直辖市）创新型企业柔性进行评价,并在此基础上探索区域创新型企业柔性的空间效应。实证结果显示：一方面,我国创新型企业柔性整体水平较高,但区域分布呈现“东高西低”的状况;另一方面,区域创新型企业柔性存在显著的空间效应,且空间相关性和空间异质性并存。最后,根据不同地区表现出来的空间效应,从政府和企业两个方面提出对策建议。     

中国工业水污染的理论研究与实证检验

随着我国经济社会的发展及工业化水平的提高,大量的工业废水未经处理直接排入河流,这对水资源造成严重的污染,而征税、管制或者排污权交易等治理污染手段没能够有效遏制我国水质继续恶化的趋势。通过剖析我国工业水污染产生的内在原因,提出我国工业水污染是地方政府、企业和公众在政治市场上博弈的结果假说。采用1997年—2008年我国30个省市的动态面板数据,利用广义矩(GMM)方法对政府-企业-公众的博弈模型进行环境污染实证检验,得出地方政府与企业的合谋是导致工业水污染的重要因素的结论。     

新创企业出生率区域差异的影响因素分析

新创企业对促进经济增长和带动区域就业有重要作用,然而我国新创企业的出生率存在着显著的区域差异,尤其是东部和西部地区差异较大,使得区域经济发展更加不平衡。通过回顾大量文献,分析了测度新创企业出生率区域差异的方法,研究了新创企业出生率区域差异的现状,探讨了造成区域新创企业差异的影响因素及影响途径,总结了缓解新创企业出生率区域差异、促进落后地区加强创业的启示。     

我国基础研究投入的区域战略布局研究

基础研究的地域分布在一定程度上反映了地区的自主创新能力和生产力布局状况。从国家战略布局的角度出发,分析了大区和省份基础研究经费支出的分布情况,通过CRn和洛伦兹曲线两种集中度指数反映了我国基础研究投入的基本分布情况,并提出了相应的建议。     

Outsourcing and structural change. Application to a set of OECD countries

The examination in this paper aims to bridge outsourcing and structural change analyses in order to obtain more accurate insights into the extent of outsourcing and to extract more reliable policy recommendations for dealing with its effects. We do this by applying a ‘battery’ of outsourcing measurements to a group of OECD countries from 1980 to the mid 1990s. Expected results (e.g. the idiosyncratic outsourcing patterns of the UK) are confirmed on a more systematic and comparable basis, while original results (e.g. the low integration of business services in manufacturing in the former socialist economies) are based on the exploitation of new data.