湘西王村古街——石板串联起来的街道空间

湖南省湘西土家族自治州永顺县王村是一个具有两千多年历史的古镇,是国家级风景名胜区猛洞河景区的核心景区之一,是位于湖南省黄金旅游线路--张家界-凤凰线上的重要景点.     

试论关税特别会议前后的商人社团——兼及商人社团与政府之间的关系

鸦片战争以后,西方列强凭借一系列不平等条约最终确立了协定中国关税、值百抽五的原则,中国由此丧失了关税自主权.协定关税不仅直接影响到中国拮据的财政,也阻碍着中国经济的正常发展,因此收回关税自主权就成为中国迫切的愿望和要求.在关税特别会议前后,代表民族资产阶级利益的商人社团,由于其直接深受协定关税之害,对这次会议的关注尤其突出.     

论翻译主体间和谐关系的构建

研究作为翻译主体间性各要素的原文作者、译者和译文读者之间的关系是翻译领域中一个重要课题。文章从和谐文化构建中得到启示,认为翻译主体之间应建立一种和谐关系,而主体间性恰好使这一点成为可能,这也是翻译能顺利成功实现的重要因素,对翻译研究有重要的指导意义。     

Subsampling-extrapolation bandwidth selection in bivariate kernel density estimation

This paper focuses on bivariate kernel density estimation that bridges the gap between univariate and multivariate applications. We propose a subsampling-extrapolation bandwidth matrix selector that improves the reliability of the conventional cross-validation method. The proposed procedure combines a U-statistic expression of the mean integrated squared error and asymptotic theory, and can be used in both cases of diagonal bandwidth matrix and unconstrained bandwidth matrix. In the subsampling stage, one takes advantage of the reduced variability of estimating the bandwidth matrix at a smaller subsample size m (m < n); in the extrapolation stage, a simple linear extrapolation is used to remove the incurred bias. Simulation studies reveal that the proposed method reduces the variability of the cross-validation method by about 50% and achieves an expected integrated squared error that is up to 30% smaller than that of the benchmark cross-validation. It shows comparable or improved performance compared to other competitors across six distributions in terms of the expected integrated squared error. We prove that the components of the selected bivariate bandwidth matrix have an asymptotic multivariate normal distribution, and also present the relative rate of convergence of the proposed bandwidth selector.     

Prediction of future failures times based on Type-I hybrid censored samples of random sample sizes

In this article, we consider the prediction of future failure times based on Type-I hybrid censored samples. Point predictors and prediction intervals using different procedures are discussed for a general model. The exponential and Rayleigh distributions are used as illustrative examples to show the most simplified forms of the so obtained predictors as well as prediction intervals. Intensive simulation study and a real life dataset are presented to illustrate our findings and results.     

Inferences for a Partially Varying Coefficient Model With Endogenous Regressors

In this article, we propose a new class of semiparametric instrumental variable models with partially varying coefficients, in which the structural function has a partially linear form and the impact of endogenous structural variables can vary over different levels of some exogenous variables. We propose a three-step estimation procedure to estimate both functional and constant coefficients. The consistency and asymptotic normality of these proposed estimators are established. Moreover, a generalized F-test is developed to test whether the functional coefficients are of particular parametric forms with some underlying economic intuitions, and furthermore, the limiting distribution of the proposed generalized F-test statistic under the null hypothesis is established. Finally, we illustrate the finite sample performance of our approach with simulations and two real data examples in economics.     

关于首批学部委员、荣誉学部委员产生过程的说明

我受院党组的委托,将我院首批学部委员、荣誉学部委员产生过程做有关说明。一、首批学部委员、荣誉学部委员的推选工作是在院党组直接领导下进行的为落实“5·19”中央政治局常委会议精神和院党组关于“组建学部”的决定,早在去年院工作会议后,根据院党组决定,院里就成立了组建     

基于混合聚类的层次教学模式分组实践

在高校计算机基础课中,由于学生的计算机学习能力及兴趣取向不同,为了提高教学质量和效果,有必要有针对性地实施分层次教学。本文通过采用K—prototypes混合聚类分析的方法,把学生的兴趣与能力分别用分类属性和数值属性加以标识,对学生进行教学分组,为有效实施分层次教学模式提供保障。     

简论人工语言和逻辑语言

本文概述了人工语言产生的原因和历史,介绍了弗雷格、罗素等人对逻辑语言的基本构想,讨论了人工语言、逻辑语言、自然语言几者的关系.本文的结论是,逻辑语言是逻辑研究必需的工具,它与自然语言的本体论地位不同,自然语言是全方位的,结晶着我们对现实的直接理解,因此,逻辑语言根本不能取代自然语言.     

我国国家审计模式重构的探讨

我国的国家审计属于典型的行政模式 ,即各级审计机关隶属于各级政府的行政系统 ,地方各级审计机关受双重领导。随着政治经济体制改革的深入 ,现有的审计模式在许多方面都阻碍了审计机关职能的行使和审计目标的实现 ,审计独立性得不到充分保证 ,因此 ,本文试针对现行审计模式的缺陷 ,对我国国家审计模式提出了新的构想