局部平稳部分线性面板数据模型的统计推断

部分线性模型是一类非常重要的半参数回归模型,由于它既含有参数部分又含有非参数部分,与常规的线性模型相比具有更强的适应性和解释能力。文章研究带有局部平稳协变量的固定效应部分线性面板数据模型的统计推断。首先提出一个两阶段估计方法得到模型中未知参数和非参数函数的估计,并证明估计量的渐近性质,然后运用不变原理构造出非参数函数的一致置信带,最后通过数值模拟研究和实例分析验证了该方法的有效性。     

具有带误差逼近的赋值伪压缩映像的公共不动点迭代序列

在实一致光滑Banach空间中引入了一类新的逼近三个极值强伪压缩映象唯一公共不动点的带误差迭代序列,以及通过Petryshyn不等式讨论了该带误差迭代序列的收敛性.     

Robustness of a Class of Partial Diallel Cross Designs to the Unavailability of a Complete Block of Observations

Complete and partial diallel cross designs are examined as to their construction and robustness against the loss of a block of observations. A simple generalized inverse is found for the information matrix of the line effects, which allows evaluation of expressions for the variances of the line-effect differences with and without the missing block. A-efficiencies, based on average variances of the elementary contrasts of the line-effects, suggest that these designs are fairly robust. The loss of efficiency is generally less than 10%, but it is shown that specific comparisons might suffer a loss of efficiency of as much as 40%.     

刑事侦查程序的价值定位

整个刑事诉讼程序犹如一座大厦 ,而侦查程序则如同这座大厦的地基 ,因此 ,刑事侦查程序的构建至关重要。科学合理的刑事侦查程序内在地包含了人权保障和秩序保障价值目标 ,并通过价值权衡来寻找对两者的合理价值定位     

“方块布依字”及其在布依族宗教典籍传承过程中的作用

“方块布依字”是布依族民间流传的一种仿汉字的记音符号 ,主要通行于宗教职业者群体。布依族宗教经文手抄本中的用字和造字方法主要有四种 ,或用与布依语相同或相近的音来记录该语音 ,或根据布依语词义、用汉语方块字的字符重新造字 ,或用与布依语同义的词来记录 ,或直接用汉字本身来记录。“方块布依字”在布依族宗教典籍及传统文化的传承过程中具有重要的作用。     

On Block Updating in Markov Random Field Models for Disease Mapping

Gaussian Markov random field (GMRF) models are commonly used to model spatial correlation in disease mapping applications. For Bayesian inference by MCMC, so far mainly single-site updating algorithms have been considered. However, convergence and mixing properties of such algorithms can be extremely poor due to strong dependencies of parameters in the posterior distribution. In this paper, we propose various block sampling algorithms in order to improve the MCMC performance. The methodology is rather general, allows for non-standard full conditionals, and can be applied in a modular fashion in a large number of different scenarios. For illustration we consider three different applications: two formulations for spatial modelling of a single disease (with and without additional unstructured parameters respectively), and one formulation for the joint analysis of two diseases. The results indicate that the largest benefits are obtained if parameters and the corresponding hyperparameter are updated jointly in one large block. Implementation of such block algorithms is relatively easy using methods for fast sampling of Gaussian Markov random fields ( Rue, 2001 ). By comparison, Monte Carlo estimates based on single-site updating can be rather misleading, even for very long runs. Our results may have wider relevance for efficient MCMC simulation in hierarchical models with Markov random field components.     

中西典型思维方式与汉英文字音形意关联

文章指出文字与民族思维方式跨文化研究中的不足 ,扼要分析了潜在的成因 ,着重探讨比较了中西民族典型思维 (西方二元分析思维与汉民族整体思维 )在西方字母文字 (以英文为例 )与汉字音、形两大物质特性与意义概念结合上的反映 ,认为正确对待文字与思维之间的客观关联 ,不仅能从新的角度审视文字功能 ,而且有利于我们从中认识和挖掘各民族历史文化的深厚积淀 ,促进跨文化交流的全面开展     

语气词在俄语口语中的结构功能

俄语传统语法历来认为语气词不充当句子成分,不发挥任何句法作用.然而,这种特性在口语中却发生了变化;有为数不少的语气词具有结构功能,在交际中发挥着极为重要的作用,这点在语气词研究中往往被忽视.受口语超语言特征的影响,语气词可以充当固定句位句素构成各种结构模式,表达各种情态意义.语气词发挥的结构功能主要有三大类:充当独立语句功能、充当语句结构要素功能及构成对话重复语句功能.     

运用心理学 讲好网络课

研究如何将心理学认知学习论运用在教学中. 强调新知识必须在学生的认知结构中找到固定点. 在分析 <计算机网络> 课程知识点的逻辑结构的基础上, 介绍了将新知识植入学生认知结构的讲授方法. 并探讨了几种固定新知识的链条和扫除学生认知结构断裂点的途径.     

矩阵非奇异性判定

本文利用矩阵块对角占优的性质,给出矩阵非奇异的一个判定条件