中国改革开放以来财政政策平滑经济波动的能力——基于传统IS-LM模型的实证分析

文章通过借助传统IS-LM模型和比较静态分析方法对中国改革开放以来财政政策平滑经济波动的能力进行了实证分析,得出:(1)财政政策对经济波动的整体平滑能力较低,平均只有6.35%,财政政策的平滑能力在经济波动的不同状态之间存在明显差异;(2)财政政策工具之间的平滑能力存在较大差异,其中财政购买性支出能平滑掉经济初始冲击的11.48%,而财政转移性支出和收入政策整体上反而使经济波动上升近3%;(3)内生性检验表明,中国只有相机性支出政策与经济波动之间存在显著的双向因果关系,不仅如此,相机性支出政策的内外时滞都较短。文章结论的政策含义是,提高中国财政政策稳定效果的关键在于提高政策工具的有效性与相互之间的协同效应,不仅如此,对经济高涨时期政府财政行为进行有效约束也至关重要。     

Modified efficient importance sampling for partially non‐Gaussian state space models

The construction of an importance density for partially non‐Gaussian state space models is crucial when simulation methods are used for likelihood evaluation, signal extraction, and forecasting. The method of efficient importance sampling is successful in this respect, but we show that it can be implemented in a computationally more efficient manner using standard Kalman filter and smoothing methods. Efficient importance sampling is generally applicable for a wide range of models, but it is typically a custom‐built procedure. For the class of partially non‐Gaussian state space models, we present a general method for efficient importance sampling. Our novel method makes the efficient importance sampling methodology more accessible because it does not require the computation of a (possibly) complicated density kernel that needs to be tracked for each time period. The new method is illustrated for a stochastic volatility model with a Student's t distribution.     

EMPLOYMENT STABILIZATION INSIDE FIRMS: AN EMPIRICAL INVESTIGATION OF WORKER COOPERATIVES

There is evidence that worker cooperatives provide a greater stabilization of employment compared to capital‐managed firms. While the reasons of this behaviour can be ascribed to their property and governance structure, less is known of the tools to put it into practice. I discuss two possible ways to guarantee employment insurance: by letting wages fluctuate, or by accumulating reinvested profits into an income stabilizing fund that copes with downturns without firing and without reducing wages. In this second case, I find out that asset locks play a wage smoothing role. This may explain the large share of profits that are reinvested in this indivisible and not appropriable fund. I provide evidence for this mechanism by means of original data at the firm level and of first‐hand collected survey data at the individual level on risk perception in a sample of Italian cooperatives.     

Statistical inference on restricted partial linear regression models with partial distortion measurement errors

We consider the estimation and hypothesis testing problems for the partial linear regression models when some variables are distorted with errors by some unknown functions of commonly observable confounding variable. The proposed estimation procedure is designed to accommodate undistorted as well as distorted variables. To test a hypothesis on the parametric components, a restricted least squares estimator is proposed under the null hypothesis. Asymptotic properties for the estimators are established. A test statistic based on the difference between the residual sums of squares under the null and alternative hypotheses is proposed, and we also obtain the asymptotic properties of the test statistic. A wild bootstrap procedure is proposed to calculate critical values. Simulation studies are conducted to demonstrate the performance of the proposed procedure, and a real example is analyzed for an illustration.     

Bank Managers' Heterogeneous Decisions on Discretionary Loan Loss Provisions

This study examines bank managers' three major motivations for discretionary behavior with respect to loan loss provisions: signaling, income smoothing, and capital management. To do so, it utilizes a bank-specific time-series regression approach that captures heterogeneity in the banks' priorities and strategies for alternative motives and compares the results to those from alternative model specifications. The statistical tests and results presented in this study lead to three conclusions. First, significant results for the income smoothing hypothesis are robust to the various model specifications. Second, average signaling coefficients estimated from bank-specific regressions are systematically larger than corresponding coefficients from pooled time-series cross-sectional regressions and are statistically significant. Finally, bank managers appear to use loan loss provisions to manage their regulatory capital levels by comparing them with the minimum ratios specified by regulators rather than with a time-series bank-specific ratio or pooled time-series cross-sectional mean ratio.     

Nonparametric estimation of distribution functions

Summary Using Silverman and Young’s (1987) idea of rescaling a rescaled smoothed empirical distribution function is defined and investigated when the smoothing parameter depends on the data. The rescaled smoothed estimator is shown to be often better than the commonly used ordinary smoothed estimator.     

Differences and derivatives in kernel estimation

Estimators of derivatives of a density function based on differences of the empirical distribution function (Maltz 1974) are identified as derivatives of kernel density estimators using particular kernel functions. Properties of this family of kernels are investigated.     

Incorporating a tracking signal into a state space model

It is a common practice to complement a forecasting method such as simple exponential smoothing with a monitoring scheme to detect those situations where forecasts have failed to adapt to structural change. It will be suggested in this paper that the equations for simple exponential smoothing can be augmented by a common monitoring statistic to provide a method that automatically adapts to structural change without human intervention. The resulting method, which turns out to be a restricted form of damped trend corrected exponential smoothing, is compared with related methods on the annual data from the M3 competition. It is shown to be better than simple exponential smoothing and more consistent than traditional damped trend exponential smoothing.     

新会计准则下我国上市公司债务重组动因研究——基于A股上市公司2007年数据

在我国2007年实施新的《企业会计准则——债务重组》的背景下,结合盈余管理的理论,对我国A股上市公司债务重组动因进行的实证分析发现,财务状况改善、扭亏对上市公司债务重组幅度有显著影响,平滑利润对上市公司债务重组幅度影响不显著。     

Economic Consequences of the Cancellation of Inner Reserves for Hong Kong Banks

Inner reserves, which allow banks to report a higher or lower earnings at managerial discretion, bring into focus the ability of the market to make an informed judgment of banks' performance. This study examines the market response to the disclosure and elimination of inner reserves by Hong Kong banks resulting from a change in the regulatory reporting system. Test results show that despite a significant increase in the variability of bank earnings in the post-compared to the pre-disclosure period, there is no evidence of a significant increase in banks' systematic risk in the post-disclosure period. Earnings-returns association is significantly stronger in the post- than in the pre-disclosure period, indicating an improvement in the value relevance of reported earnings. Disclosure of inner reserve transfer is found to provide incremental information over reported earnings over a short disclosure window. These results suggest that the increased value relevance of earnings outweighs the costs of inner reserve cancellation, thus supporting greater reporting transparency for Hong Kong banks.