均质岩基极限承载力滑移线解与极限平衡解的比较

极限平衡法、滑移线法是求解剪切破坏模式下均质岩基极限承载力的两种重要的极限分析法。通过对某工程均质岩基承载力的反算 ,对基于Hoek -Brown经验强度准则的 3种极限承载力计算方法—Bell解、Hoek -Brown解和滑移线法的计算结果进行了比较 ,并分析了造成差异的原因。     

Smoothing for discrete-valued time series

We deal with smoothed estimators for conditional probability functions of discrete-valued time series { Y_t } under two different settings. When the conditional distribution of Y_t given its lagged values falls in a parametric family and depends on exogenous random variables, a smoothed maximum (partial) likelihood estimator for the unknown parameter is proposed. While there is no prior information on the distribution, various nonparametric estimation methods have been compared and the adjusted Nadaraya–Watson estimator stands out as it shares the advantages of both Nadaraya–Watson and local linear regression estimators. The asymptotic normality of the estimators proposed has been established in the manner of sparse asymptotics, which shows that the smoothed methods proposed outperform their conventional, unsmoothed, parametric counterparts under very mild conditions. Simulation results lend further support to this assertion. Finally, the new method is illustrated via a real data set concerning the relationship between the number of daily hospital admissions and the levels of pollutants in Hong Kong in 1994–1995. An ad hoc model selection procedure based on a local Akaike information criterion is proposed to select the significant pollutant indices.     

诗歌翻译中“忠实”标准的多元取向——以朗费罗《金色的夕阳》的两种翻译为例

翻译的首要标准是忠实于原作。“忠实”标准适用于诗歌翻译时会表现出很大的灵活。性。对朗费罗的一首诗《金色的夕阳》的两种截然不同翻译表明，诗歌翻译中，由于译者对诗歌的各种内容与形式因素价值评判不同，“忠实”这一标准的取向是多元的，译者对这一客观标准的主观取向很大程度上影响译作风格。     

从功能语言学的角度看翻译实质、翻译策略与翻译标准

本文从语言的概念功能、人际功能和语篇功能入手,说明不同文本类型有不同的翻译策略,同时指出三类文本有共同的翻译标准,即“功能对等”。     

Improved likelihood-based inference for the stationary AR(2) model

An improved likelihood-based method based on Fraser et al. (1999) is proposed in this paper to test the significance of the second lag of the stationary AR(2) model. Compared with the test proposed by Fan and Yao (2003) and the signed log-likelihood ratio test, the proposed method has remarkable accuracy. Simulation studies are performed to illustrate the accuracy of the proposed method. Application of the proposed method on historical data is presented to demonstrate the implementation of this method. Furthermore, the method can be extended to the general AR(p) model.     

Nonparametric estimating equations based on a penalized information criterion

It has recently been observed that, given the mean‐variance relation, one can improve on the accuracy of the quasi‐likelihood estimator by the adaptive estimator based on the estimation of the higher moments. The estimation of such moments is usually unstable, however, and consequently only for large samples does the improvement become evident. The author proposes a nonparametric estimating equation that does not depend on the estimation of such moments, but instead on the penalized minimization of asymptotic variance. His method provides a strong improvement over the quasi‐likelihood estimator and the adaptive estimators, for a wide range of sample sizes.     

文学批评标准的客观性和普遍性

本文认为文学批评标准客观存在，理由有三：必要性；可能性；中外文学批评标准存在的客观事实。但是文学批评标准没有普遍性，它有着种种破坏普遍的异质因素：历史推移性、民族性、主体多元性。而诸如美学的历史的观点、真善美的标准都因过于抽象，只能作为方法论原则起指导性作用。为此。我们必须建立起一个系统的开放的文学批评标准体系。     

从英汉熟语的对译看翻译的可接受性

使用符合译文的语言表述习惯，把握符合译文读者表述的标准，寻找译文读者熟悉的对应的表述，注意传达原文思想时的技巧，充分考虑读者的可接受性，是翻译出好作品的关键。     

Smoothed Histograms for Frequency Data on Irregular Intervals

Frequency tables are often constructed on intervals of irregular width. When plotted as bar charts, the underlying true density information may be quite distorted. The majority of introductory statistics texts recommend tabulating data into intervals of equal width, but seldom caution the consequences of failing to do so. An occasional introductory text correctly emphasizes that area rather than frequency should be plotted. Nevertheless, the correctly scaled density figure is often visually less informative than one might expect, with wide bins at constant height. In many cases, the right most bin interval has no well-defined end point, making its depiction some what arbitrary. In this note, we introduce a regular histogram approximation that matches the frequencies and also minimizes a roughness criterion for visual and exploratory appeal. The resulting estimate can reveal the density structure much more clearly. We also formulate an alternative criterion that explicitly takes account of the uncertainty in the bin frequencies.     

论新时期思想政治工作的创新与标准

在新时期,要加强和改进思想政治工作,必须实现思想政治工作理论创新、内容创新、主体创新和方法创新,充分发挥思想政治工作的价值和作用.其创新要以"三个代表"重要思想为标准.