Information Entropy-Based Housing Spatiotemporal Dependence

The Journal of Real Estate Finance and Economics - In the existing housing literature, there has been no academic consensus on how to combine the spatial dependence and the temporal dependence...     

Operational risk quantified with spectral risk measures: a refined closed-form approximation

The quantification of operational risk has become an important issue as a result of the new capital charges required by the Basel Capital Accord (Basel II) to cover the potential losses of this type of risk. In this paper, we investigate second-order approximation of operational risk quantified with spectral risk measures (OpSRMs) within the theory of second-order regular variation (2RV) and second-order subexponentiality. The result shows that asymptotically two cases (the fast convergence case and the slow convergence) arise depending on the range of the second-order parameter. We also show that the second-order approximation under 2RV is asymptotically equivalent to the slow convergence case. A number of Monte Carlo simulations for a range of empirically relevant frequency and severity distributions are employed to illustrate the performance of our second-order results. The simulation results indicate that our second-order approximations tend to reduce the estimation errors to a great degree, especially for the fast convergence case, and are able to capture the sub-extremal behavior of OpSRMs better than the first-order approximation. Our asymptotic results have implications for the regulation of financial institutions, and may provide further insights into the measurement and management of operational risk.     

Viewpoint: Soda taxes – Four questions economists need to address

The popularity of soda taxes as a public health policy has grown rapidly in the last few years. While the evidence that the tax works in reducing the purchases of soda is emerging, there are a number of questions that are yet to be answered before the broader effectiveness of this measure can be determined. Beyond health effects, there is more specifically a need to better understand the economic mechanisms of change, redistributive effects, as well as causal and spillover effects in food systems and economy more broadly.     

中国对外直接投资有助于沿线国家绿色技术创新吗——基于“一带一路”沿线国家数据的检验

“一带一路”沿线国家的绿色转型给中国承担新使命、促进国内国际双循环和绿色发展创造了新机遇。基于中国对外直接投资（OFDI）特征,研究其对“一带一路”沿线国家绿色技术创新的影响及作用机制。研究发现,中国OFDI主要通过绿色技术溢出机制、增长机制影响“一带一路”沿线国家绿色技术创新;该绿色技术创新效应随着互联互通合作水平提升而显著增强,且对沿线国家绿色技术创新的改善效果主要体现在高收入组国家。     

Political Connections and Government Subsidies: Evidence from Financially Distressed Firms in China

Previous studies report mixed evidence regarding the effect of political connections on firm value. We seek new evidence in China, an important emerging market with a hallmark of a relationship-based economy. Using financially distressed firms (special treatment or ST firms) as a unique sample, we identify a direct channel through which political connections enhance firm value by showing that politically connected firms receive more government subsidies. Moreover, such effect becomes stronger for state-owned enterprises (SOEs), for firms with a better chance of survival, and after the government implemented a new policy to more strictly enforce the delisting in 2012.     

企业社会责任报告评价体系的初步研究

目前国外对企业社会责任报告的评价模式有两个理论基础:利益相关者理论和可持续发展理论。前者着眼于企业的不同利益相关者对信息的需求,从外部对企业的社会责任报告进行评价;后者则着眼于企业战略,从企业可持续发展的角度评价企业社会责任报告,是从内部进行评价的模式。与此对应的具有代表性的两个国际标准是AA1000与G3。对比分析发现,这两种模式和两个标准各自都存在着优缺点。结合我国的实际状况,我们构建了企业社会责任报告的3R评价体系。该体系的建立将有助于我国企业社会责任报告准则的建立,并为企业社会责任信息质量的实证研究提供可行的框架。