Nonperforming loans in the GCC banking sectors: Does the Islamic finance matter?

This paper investigates the bank-level and country-level factors determining nonperforming loans (NPL) in the commercial banking industry of Gulf Cooperation Council (GCC) countries. Specifically; it examines the impact of the sectoral distribution financing growth and Islamic finance methods growth on NPL. To do so, we apply generalized method of moments (GMM) techniques, over the 2005–2011 period. Our findings indicate that the sectoral distribution of Islamic financing has an adverse impact on NPL, which suggest that the sectoral financing growth of Islamic banks increases the credit risk exposure more than conventional banks. The findings of the Islamic finance methods growth show that the impact of fixed-income debt contracts could increase NPL more than profit-and-loss-sharing contracts.     

基于广义可加模型的跨境人民币流动影响因素实证分析

利用广义可加模型对影响跨境人民币流动的因素进行理论和实证分析,发现贸易进出口总额对跨境人民币流动的线性作用与非线性作用不一样.随着一国贸易进出口总额的增加,对跨境人民币流动的非线性影响呈现由正向转为负向的趋势;人民币的有效汇率对于会造成跨境人民币流动水平小幅波动;资本市场的发展水平对于跨境人民币流动的影响是水平线性的.最后,本文比较了广义可加模型与多元线性回归模型、协整模型的差异,体现了广义可加模型用于经济领域研究的优势.     

进出口贸易与中国制造业要素重置——基于动态面板数据的实证分析

在使用2000-2009年企业层面的数据测度中国制造业的要素重置效应的基础上,运用动态面板数据的系统广义矩方法检验了进出口贸易对制造业要素重置的影响作用。结果表明进出口贸易对中国制造业的要素重置综合效应存在显著的促进作用,从分解来看,进出口贸易对退出效应和在位企业要素重置效应均有显著的正向作用;进一步研究发现,进出口贸易仅对劳动力密集型行业的进入效应存在显著的正向影响,而对资本密集型行业的进入效应作用不明显。     

Bayesian estimation of an extended local scale stochastic volatility model

A new version of the local scale model of Shephard (1994) is presented. Its features are identically distributed evolution equation disturbances, the incorporation of in-the-mean effects, and the incorporation of variance regressors. A Bayesian posterior simulator and a new simulation smoother are presented. The model is applied to publicly available daily exchange rate and asset return series, and is compared with t-GARCH and Lognormal stochastic volatility formulations using Bayes factors.     

时变Copula模型的非参数推断

运用Copula模型研究金融变量之间的相关结构,是近年来金融分析中的一个热点,如何估计Copula模型中的时变参数则是一个重点和难点问题。本文从非参数建模思想为切入点,提出经验分布函数—局部极大似然法(ECDF-LML)估计Copula函数中的时变参数,研究了Copula模型参数是否时变的统计假设检验问题。最后通过大量随机模拟研究验证了本文所提出的方法较DCC-MGARCH方法在刻画随机变量动态相关性方面更具优越性且很稳健。     

中国未来10年通胀周期预测及其验证

采用增广Pisarenko方法对当代中国通货膨胀周期进行分析验证，可得出通货膨胀周期函数。运用这一周期函数对中国通货膨胀周期进行10年预测，可得出2009年左右、2013年左右中国可能出现较高的通货膨胀预测结果。因此，必须对可能出现的较高的通货膨胀保持足够的警惕，做好必要准备。     

In search of general evolutionary principles: Why Darwinism is too important to be left to the biologists

Bioeconomics emphasizes the common ontological ground between economics and biology. However, this does not necessarily mean that both disciplines collapse into one. Instead it is proposed here that Darwinism provides a general, meta-theoretical framework for dealing with complex evolving systems, consisting of populations of varied and replicating entities, which are found in both nature and human society. There is no alternative to the core Darwinian principles of variation, selection and inheritance to explain the evolution of such systems. Neither the actual existence of human intentionality, nor the hypothetical existence of Lamarckian processes of acquired character inheritance, offer a barrier to the use of Darwinian explanations. However, while Darwinian principles are always necessary to explain complex evolving population systems, they are never sufficient on their own. Such a generalized Darwinism can accommodate several different stances found in the literature on bioeconomics and elsewhere.      

On characterizations of distributions by regression of adjacent generalized order statistics

Let , r ≥ 1, denote generalized order statistics, with arbitrary parameters , based on distribution function F. In this paper we characterize continuous distributions F by the regression of adjacent generalized order statistics, i.e. where are continuous and increasing functions and ψ is strictly increasing. Further we investigate in detail the case when ψ(x) = x and g is a linear function of the form g(x) = cx + d for some .     

中国土地出让金与GDP关系研究

研究目的:揭示土地出让金与GDP之间的作用性质和作用程度。研究方法:Granger因果检验,广义脉冲响应和方差分解分析。研究结果:Granger检验结果显示土地出让金收入对GDP存在单向的显著可信的Granger因果关系,广义脉冲响应和方差分解结果显示,土地出让金对GDP的影响大于GDP对土地出让金的影响。研究结论:土地出让金对GDP有着显著的单向作用,GDP对土地出让金有较强的依赖性;而经济波动对土地出让金的影响不明显。     

Investor preferences and portfolio selection: is diversification an appropriate strategy?

This paper analyzes the relationship between diversification and several distributional characteristics that have risk implications for stock returns. We develop a flexible three-parameter distribution to model the stock returns. Using data on the current 30 DJIA stocks, we show that an investor's strategy on diversification depends on the measures of risk for particular concerns. For example, investors who desire to increase positive skewness would hold a less diversified portfolio, while those who care more about extreme losses would hold a more diversified portfolio. Experimenting with a more general pool of stocks yields the same conclusions.