Stock market dependence in crisis periods: Evidence from oil price shocks and the Qatar blockade

This paper examines the correlation and the dependence patterns of the Qatar stock market with other markets using copula statistical theory and exploiting new datasets covering the period August 1998 to June 2018. To examine the crisis –specific change in the average degree of dependence we decomposed the data into the time periods before and after oil price shocks and the 2017 political crisis among the Gulf Cooperation Council members (i.e. the Qatari blockade). Our findings from the static copula modelling show that the correlations between the Qatari and the other stock markets significantly change after the oil price and the blockade crisis as well. The degree of change in the correlation is time varying and differs from county-group to another. Moreover, our findings reveals that the 2008 global financial crisis has a stronger impact than the price shocks and political crisis. The findings of the paper are of interest and allow for formulating a reliable and dynamic portfolio design framework for investors and risk managers.     

Internal pyramid structure,contract enforcement,minority investor protection,and firms’ performance: Evidence from emerging economies

This study investigates the relationship between internal pyramid structure and performance of Chinese, Pakistani, Malaysian pyramidal firms, the effect of judicial efficiency and minority investor protection on this relationship. The results show that the pyramid structure of Pakistani firms is more complicated than Chinese and Malaysian firms, both vertically and horizontally. The study finds that the impact of control layers on performance is negative and stronger than control chains. Moreover, the results illustrate that the effect of control layers on performance at Chinese firms is negative but lower than at Pakistani and Malaysian firms. However, control chains have insignificant association with performance at Chinese pyramid firms. We find that efficient judiciary abates the negative impact of control layers and chains on performance. Our results reveal that in the absence of efficient courts the minority investors’ protection have insignificant impact on the association between internal pyramid structure and firms’ performance.     

Drivers of research impact: evidence from the top three finance journals

We study the characteristics of all published papers in the top three finance journals (JF, JFE and RFS), and how these paper characteristics affect the number of citations in Google Scholar and the Web of Science database. First, we find the characteristics in the universalist perspective remain constant while the characteristics in the constructivist and presentation perspectives increase over time. Second, some characteristics are significantly different between the high-impact and the low-impact papers. Third, paper quality, research method, journal placement and paper age are the most important drivers. Last, different drivers play different roles in different journals.     

Does economic policy uncertainty raise corporate precautionary cash holdings? Evidence from China

Using China as the research setting, this paper investigates the relationship between economic policy uncertainty and corporate precautionary cash holdings. Empirical results show a U-shaped relation between economic policy uncertainty and corporate precautionary cash holdings. Empirical analysis, in terms of ownership structure, firm size, corporate competitiveness and geographical location, further shows that (i) the effects for economic policy uncertainty in both state-owned and non-state-owned enterprises are significant, but the effect is stronger for state-owned enterprises; (ii) such significant effect is also found more strongly in small and medium-sized enterprises and highly competitive enterprises; and (iii) the effects for eastern, central and western China are all statistically significant, but the effect is strongest for eastern China.     

Agricultural holdings with undefined boundaries,communal systems and counter‐hegemonies: The persistence of the peasantry in Argentina

The presence of agricultural holdings with undefined boundaries (AHUBs) and their heterogeneous geographical distribution questions the supposed hegemony of agribusiness in Argentina. Given the lack of defined boundaries, these holdings generate a communal culture among dwellers, which is reflected in both the strategies of the use of commons and the initiatives for the defence of land in the conflicts between peasants and entrepreneurs. This article describes two counter‐enclosure experiences that were generated and have developed on the bedrock of AHUBs and a communal matrix. Those defence strategies are employed by families that possess the land but have not title to it, being a defence tactic against attempts of eviction. AHUB not only is a new census category that allows us to enhance our knowledge of the rural world but also proposes modes of production that differ from those of the capitalist model, showing possible counter‐hegemonic development alternatives that arise from the practices used in these holdings.     

中美贸易战的危害与对策

分析中美国情现状,对中美经济状况进行对比,对美国发动贸易战的原因进行分析:美国对华贸易逆差过大;美方认为中方侵犯美国企业知识产权,中国的重商主义对美国经济产生了致命影响;转嫁国内矛盾,战略遏制中国。分析美国发动贸易战的危害,提出了中国应对挑战应妥善应对短期冲击,对等还击;拉动内需,加快自身经济结构调整等对策。     

中部崛起政策对地区产业升级的异质性影响与机制分析--基于PSM-DID方法的一项拟自然实验

国家中部崛起政策实施13年来,相关地区的经济发展和产业结构发生不同程度的变化。为进一步引导发展,需对这一政策的实施效果作整体评估和检验。基于1999-2013年我国201个地级市的面板数据,运用PSM-DID方法,从长期影响角度评估中部崛起政策实施效果。结果表明,以地区技术复杂度度量的产业结构得到了显著的提升。在此基础上考察中国式财政分权模式下政府财政行为波动对政策效果的影响,结果显示政府财政支出波动对地区产业升级会起到负面作用。进一步的机制检验表明,吸引外商直接投资、积极性政府财政政策、突破路径依赖是实现政策效果的中介变量;政策着力点主要在高技术水平的产业上;由于地区异质性的存在,部分省份产业升级并未达到预期效果。因此,制定新一轮崛起战略措施时,要因地制宜,充分考虑地区异质性,走内涵式发展道路。     

中国沿海地区经济结构变动对海洋环境的影响

中国沿海经济结构的研究对海洋环境的发展意义重大,然而二者之间的定量关系及内在机理尚不完全清楚。以2007-2016年为研究时段,我国沿海11省(区、市)为研究区域,借助固定效应以及门槛模型,测度经济结构变动与海洋环境之间的关系。结果表明:①在经济结构中产业结构(-0.099)对海洋的弹性系数最大,其次是经济增速(-0.058),投资对象为正向影响,但不显著;非经济结构中,技术进步(0.052)的弹性系数最大,其中环境规制(-0.045)、人口规模(-0.045)抑制海洋环境的改善。②区域对比北部、东部海洋经济圈产业结构对海洋环境起抑制作用,另外,东部海洋经济圈环境规制、人口规模与海洋环境水平呈明显的负相关性;南部海洋经济圈相对于其他两个区域,结果不显著。③将产业结构、技术进步作为门槛变量,在各自的作用下分别存在双重门槛和单一门槛。产业结构门槛值为0.533、0.462,仅河北,福建未跨越第二门槛;科研能力门槛值为40,仅河北、福建、海南未跨过门槛值。因此,应适度调整产业结构,注重经济增长的质量,合理控制城镇人口的流动,积极鼓励科研创新,实现经济与海洋环境协调发展。     

中国的所有制结构与区域劳动生产率收敛

基于2001~2017年中国工业分企业所有制-分地区-分行业的面板数据，利用相对劳动生产率和变异系数指标对全国和分区域的国有企业、私营企业、外商和港澳台企业的劳动生产率增长和收敛性进行描述性分析，并运用双向固定效应模型对其进行计量检验。结果显示：从全国范围来看，三类所有制结构的劳动生产率均呈现显著的绝对收敛和条件收敛，但是收敛速度呈现差异。其中，私营企业收敛速度最快，外商和港澳台企业次之，国有企业收敛速度最慢。分区域来看，东北和西部收敛速度相对较快，中部次之，而沿海三类所有制结构的劳动生产率收敛速度均较慢。因此，政府应进一步从深化国有企业改革、鼓励非公有制经济发展和完善市场竞争等方面努力，有助于缩小区域发展差距和促进所有制结构的收敛，从而带动整体经济的收敛。     

金融发展、环境规制与绿色全要素生产率——基于空间杜宾模型的实证分析

选择2006~2015年中国内地30个省、直辖市、自治区面板数据，运用DEA-BCC模型、熵值法测算绿色全要素生产率，采用空间杜宾模型研究金融发展和环境规制对绿色全要素生产率的空间溢出效应。研究结果表明：（1）中国省域绿色全要素生产率存在显著的空间溢出效应，即本地区绿色全要素生产率的发展会促进周边地区绿色全要素生产率；（2）单一的金融发展和环境规制对绿色全要素生产率有一定的促进作用；（3）现阶段，"金融发展-环境规制"相结合的模式抑制了绿色全要素生产率。为此，应不断深化金融体制改革，优化金融发展成效；完善环境规制体系，合理进行污染治理投资；制定适宜环境规制政策，结合考虑金融发展。