《反对本本主义》产生的历史背景与伟大意义

《反对本本主义》是中国共产党历史上的一篇重要著作,是在共产国际不顾中国革命实际的“瞎指挥”和党内盲目执行国产国际指示从而严重“左”倾的形势下,在毛泽东的正确主张无法得到执行甚至备受指责和非难的情况下产生的,已经具备了党的思想路线的雏形,是毛泽东思想开始形成的重要标志。它所强调的调查研究的重要性及调查方法在今天仍然具有重要的指导意义。     

Statistical and computational tradeoff in genetic algorithm-based estimation

When a genetic algorithm (GA) is employed in a statistical problem, the result is affected by both variability due to sampling and the stochastic elements of algorithm. Both of these components should be controlled in order to obtain reliable results. In the present work we analyze parametric estimation problems tackled by GAs, and pursue two objectives: the first one is related to a formal variability analysis of final estimates, showing that it can be easily decomposed in the two sources of variability. In the second one we introduce a framework of GA estimation with fixed computational resources, which is a form of statistical and the computational tradeoff question, crucial in recent problems. In this situation the result should be optimal from both the statistical and computational point of view, considering the two sources of variability and the constraints on resources. Simulation studies will be presented for illustrating the proposed method and the statistical and computational tradeoff question.     

Selecting the regularization parameters in high-dimensional panel data models: Consistency and efficiency

This article considers panel data models in the presence of a large number of potential predictors and unobservable common factors. The model is estimated by the regularization method together with the principal components procedure. We propose a panel information criterion for selecting the regularization parameter and the number of common factors under a diverging number of predictors. Under the correct model specification, we show that the proposed criterion consistently identifies the true model. If the model is instead misspecified, the proposed criterion achieves asymptotically efficient model selection. Simulation results confirm these theoretical arguments.     

Regularization and variable selection for infinite variance autoregressive models

Autoregressive models with infinite variance are of great importance in modeling heavy-tailed time series and have been well studied. In this paper, we propose a penalized method to conduct model selection for autoregressive models with innovations having Pareto-like distributions with index α∈(0,2)$\alpha \in (\mathrm{0,2})$. By combining the least absolute deviation loss function and the adaptive lasso penalty, the proposed method is able to consistently identify the true model and at the same time produce efficient estimators with a convergence rate of n^−1/α$n^{-1/\alpha }$. In addition, our approach provides a unified way to conduct variable selection for autoregressive models with finite or infinite variance. A simulation study and a real data analysis are conducted to illustrate the effectiveness of our method.     

公司信息透明度与大股东资金占用研究

本文以2002-2006年非金融类的中国A股上市公司为研究对象,分析了公司信息透明度与大股东资金占用之间的关系.研究发现,在控制其它影响因素条件下,公司信息透明度越差,大股东资金占用问题越严重.该研究结论表明,提高公司信息透明度将有助于改善大股东与中小股东之间的信息不对称,缓解二者之间的代理冲突,减少大股东资金占用的可能性.     

限制性卖空的均值-半绝对偏差投资组合模型及其旋转算法研究

本文提出了限制性卖空的均值-半绝对偏差投资组合模型,通过变量替换将该模型转变为一般线性规划问题,从而运用线性规划的旋转算法进行求解。最后,文章以一个具体的算例验证了该算法的有效性,并证明将限制性卖空引入到投资组合中,有助于增强市场效率,降低市场风险。     

产业结构偏离度、行业结构偏离度与竞争力评价：重庆例证

本文利用重庆市2005—2010年数据,以全国平均水平为参照系,研究了重庆市三次产业结构整体状况与三次产业内部各个行业的产业结构偏离程度及竞争力水平。在研究中,本文拓展了传统意义的偏离份额分析方法,引入时间维度对静态的偏离份额方法进行改良,从而发现重庆市第一产业发展稳健但行业结构不太合理,第二产业以制造业为主导产业,第三产业内各主导行业存在较大的发展空间。因此,推进产业内主导行业的结构升级及提升主导行业竞争力水平是整体产业升级的较佳方式。     

马克思主义哲学视阈下的心理契约问题

相对于经济型组织和个体来说,知识型组织与个体的心理契约远比经济契约发挥的作用要大.文章在分析心理契约概念和背逆的基础上,着重从马克思主义哲学的层面来阐释和分析心理契约问题,旨在拓宽这一问题的研究领域,为我国和谐社会建设提供理论上的借鉴.     

从“背离”到“规范”——扬·穆卡若夫斯基对俄罗斯形式论学派之超越

将"规范——背离"作为一种理论建构模式引入文论研究始于俄罗斯形式论学派,在这一模式指导下,俄罗斯形式论派对"文学性"进行了一系列卓有成效的探索,然而,由于极端重视"背离",而在很大程度上轻视、甚至忽视了"规范",这一不足极大限制了俄罗斯形式论学派在文学性探索上所达到的高度;俄罗斯形式论学派解体后,布拉格学派的扬·穆卡若夫斯基一方面继承了俄罗斯形式论学派的优秀成果,另一方面对其不足进行了批判:早期,他运用"前推"来对"背离"的方式进行描述;后期,他对文学、艺术中的规范类型进行系统研究,将"审美规范"问题提到本体论高度,并论证了这一概念在美学中的必要性和合法性,从而更加辩证、深刻地揭示了审美价值的生成机制。     

A Hedonic Price Function for a Northern BC Community

In this paper a hedonic price function forPrince George, a northern British Columbiacommunity, is estimated. In light of the lackof consensus regarding appropriate functionalform of a hedonic price function, a linearmodel is estimated and a battery of diagnostictests of model adequacy is performed. Twoestimation procedures are used, namely,ordinary least squares (OLS) and Least AbsoluteDeviation (LAD). The estimation results areused to form appropriate valuations ofcharacteristics of residential houses in PrinceGeorge.