国民经济增长中的出口信用联动机制定量研究

文章利用1978年至2004年的数据,采用三阶段最小二乘方法构建并拟合了包含6个子模块、25个方程和43个变量的"出口信用对国民经济贡献的联立方程模型"。利用联立方程模型进行仿真研究后的结果表明:我国出口信用对我国宏观经济具有较好的贡献度,具体而言,如果进出口银行贷款余额增加1亿元,将导致国内生产总值增长1.82亿元,税收总额增长0.48亿元,就业人数增加2190人。     

广义Breitung非参数单位根检验研究——基于平稳假设下序列长期方差一致估计的分析

Breitung检验中生成序列的误差项的自相关会影响有限样本性质。本文用平稳假设下序列长期方差的一致估计量作为统计量的分母对其进行了修正。给出了修正后的统计量及其渐近理论,并对修正前后的有限样本性质进行了仿真。结果显示,修正后统计量概率密度的左偏有所减少;当误差项有自相关时,修正后检验的水平扭曲有所改进;当样本较小时,随误差项自回归(移动平均)系数或序列自回归系数的增加,修正后检验的势逐渐大于Breitung检验的势。     

A true simulation study of three estimators at equal protection of respondents in randomized response sampling

In this study, three different estimators for estimating the proportion of a sensitive attribute in survey sampling are compared at equal protection of the respondents. The three estimators considered are due to Odumade and Singh (2009, Comm. Statist. Theory Methods) , Singh and Sedory (2011, Sociological Methods and Research) and a new estimator obtained by minimizing a chi‐squared distance. A SAS Macro is developed to compare these three estimators using a simulation study at equal protection of the respondents. A set of data from a real face‐to‐face interview was collected using two decks of cards and has been analyzed. The results are discussed.     

Can interest rate spreads stabilize the euro area?

Since the onset of the financial crisis significant interest rate spreads have arisen between euro area countries, both for public and private debt. We check whether these spreads could be made to work towards the goal of providing more stability to the euro area. In particular, we focus on reducing the imbalances that arose between the core and peripheral members of the euro area in the first decade of its existence. The idea is that stable positive spreads in peripheral countries could have decreased domestic demand, preventing the boom–bust cycles that plagued these economies. They could also prevent such developments in the future. We construct a panel model for euro area countries and estimate the relationship between real interest rates and the current account balance. Next, we use the estimated parameters to perform simulations. We find that spreads on real interest rates of 0.6–5.5 percentage points would have been necessary to stabilize external positions of the four peripheral euro area member countries.     

Taking financial frictions to the data

We estimate a Dynamic Stochastic General Equilibrium (DSGE) model with various financial frictions and analyze how well the model explains the Great Recession. Predictive analysis shows that the model can only slightly better explain the large deviation from trend during the crisis relative to a model without financial frictions. Specifically, the risk premium shock, which is a shock to the external finance premium of the entrepreneurs׳ leverage, explains the largest part of the investment downfall during the crisis. However, the ‘balance sheet’ channel of financial frictions in the model, which structurally links balance sheet conditions of financial intermediaries and nonfinancial borrowers to their borrowing rates, is estimated to be weak. We examine alternative prior specifications for how the financial frictions enter the model and continue to find a limited role for these frictions. Rolling-window estimation provides evidence for substantial time variation in parameters governing financial frictions. We conclude that the well-known financial frictions studied in this paper are not able to explain the financial crisis in a linearized and estimated model.     

中国、香港与美国股票市场波动传导的时延分析

金融风险传导的控制是金融风险管理中非常重要的内容,对金融市场波动传导的规律性进行研究具有重要的理论意义和实践价值。基于时间序列高阶谱分析的时延估计方法分析非高斯性、非线性的股票指数时间序列,可以确定各股票市场波动传导的具体领先——滞后时间和相互间的影响强度。研究结果表明,内地股票市场和香港股票市场波动传导时滞很短;内地股票市场波动的原因主要来自内部,香港和美国股市的波动对内地的影响并不大。     

关于解决我国物业税“空转实”难点问题的研究

目前,我国“空转”物业税的计税依据是房产评估价的70％,而“房产评估价”与房产的房龄、朝向、装修状况、周边设施等多个因素相关,致使评估工作复杂,税收的公平与效率难以体现。基于此,文章提出了以“房产原值”为基础上浮一定比例为“空转”物业税计税依据的全新观点,并从税收公平与效率的视角对这一观点进行了可行性分析。     

我国增值税扩围改革研究文献述评

分税制改革后,我国形成了增值税和营业税并存的局面,分别在中央和地方财政收入中占据主要地位,这对市场经济的运行造成了一定的扭曲,不利于经济结构的转型,因此增值税扩围改革势在必行。增值税扩围意味着营业税最终被取消,建立这样一个新体制对既有利益分配格局的冲击是显而易见的,在这一改革中如何兼顾各方面的利益将是增值税扩围改革能否取得成功的关键。本文主要对近年来国内学者关于增值税扩围及其相关问题的研究成果进行梳理,以期能为改革实践和有关研究提供参考。     

Shrinkage Estimation Strategies in Generalised Ridge Regression Models: Low/High-Dimension Regime

In this study, we suggest pretest and shrinkage methods based on the generalised ridge regression estimation that is suitable for both multicollinear and high-dimensional problems. We review and develop theoretical results for some of the shrinkage estimators. The relative performance of the shrinkage estimators to some penalty methods is compared and assessed by both simulation and real-data analysis. We show that the suggested methods can be accounted as good competitors to regularisation techniques, by means of a mean squared error of estimation and prediction error. A thorough comparison of pretest and shrinkage estimators based on the maximum likelihood method to the penalty methods. In this paper, we extend the comparison outlined in his work using the least squares method for the generalised ridge regression.     

The momentum and reversal effects of investor sentiment on stock prices

In this paper, we illustrate the real function relationship between the stock returns and change of investor sentiment based on the nonparametric regression model. The empirical results show that when the change of investor sentiment is moderate, the stock return is positively correlated with the change of investor sentiment, presenting an obvious momentum effect. However, the stock return is negatively correlated with the change of investor sentiment if the change of investor sentiment is dramatic, presenting significant reversal effects. Moreover, the degree of reversal effect caused by extremely optimistic sentiment is greater than that driven by extremely pessimistic sentiment, which shows a significant asymmetry. Our findings offer a partial explanation for financial anomalies such as the mean reversion of stock returns, the characteristic of slow rise and steep fall in China's stock market and so on.