Estimation of the mean of a spherically symmetric distribution with constraints on the norm

The authors consider the problem of estimating, under quadratic loss, the mean of a spherically symmetric distribution when its norm is supposed to be known and when a residual vector is available. They give a necessary and sufficient condition for the optimal James‐Stein estimator to dominate the usual estimator. Various examples are given that are not necessarily variance mixtures of normal distributions. Consideration is also given to an alternative class of robust James‐Stein type estimators that take into account the residual vector. A more general domination condition is given for this class.     

外来入侵物种成活的非生物性因素分析

污染物种进入异地后,能否着生成灾,不仅与其生物属性和着生地的生态环境有关,还与相关民族文化运行的后果有关联。民族文化与生态系统在耦合运行中会出现偏离性、错置性和代偿性三类生态位空缺,从而成为污染物种攻击的软肋。本文通过田野点的观察分析证明,这些地区的污染物种成灾,都是在上述三类生态位空缺点上着生滋蔓的后果。因此,我们只要堵住因民族文化运行而导致的三类生态位空缺,就能摧毁污染物种着生的"温床",就能以最小的代价高效控制污染物种引发的灾变。     

二维小波变换在虹膜特征提取中的应用研究

本文提出了一种采用canny变换来提取虹膜特征,并用小波神经网络来进行分类的虹膜检测识别的新方法。该方法结合了小波神经网络作为一种新的分类方法,它很好地改进了识别精度,同时提高了系统的性能。一个简洁并且能快速训练的算子Adaboost也将在小波神经网络中给出介绍。实验结果表明,应用该算子进行分类识别时,识别率为100%,该方法具有很高效的可行性。     

浙江制造业发展的重点与思路——基于主导产业倒U型演进假说的分析

 本文根据1991-2004浙江、上海和中国相关统计数据，运用制造业占全国份额、产业部门增长率等方法分析了浙江省制造业发展在全国的基本情况，提出并验证了反映区域主导产业演进特征和过程的主导产业倒U型演进假说。结合浙江省经济发展的实际，确定了作为浙江当前产业发展重点的主导产业和支柱产业，提出了浙江省制造业发展的基本思路是资金密集、技术密集型产业优先发展，劳动密集型产业规划发展。浙江当前制造业发展的具体战略是“外引内孵”、“东扩西进”，注重择商引资，加强自主创新，实现区域产业的合理升级和转移。     

对“符号矩阵”在文学批评实践中的反思

格雷马斯符号矩阵在国内文学批评实践中存在两种误读情况:一是在部分论著中将符号矩阵第三项和第四项位置颠倒,二是在函项赋值上存在很多偏差,并且缺失整合意识.通过重读符号矩阵,并借鉴杰姆逊运用这一模式分析文本的经典案例,可对上述不足加以修正.     

准确定位是独立学院发展的战略需要

在高等教育大众化阶段，独立学院显现了特有的生命力，同时，独立学院必须明确自身在社会发展中的地位，根据自身办学性质和服务定位以及可利用的一切优势教学资源，办出特色和品牌，才能在竞争中求得生存和发展。     

A conservative nonparametric distribution-free confidence bound for the shift in the changepoint problem

The problem of testing whether there is a change in location in a sequence of random variables that are taken over time was discussed in several papers. In this paper we develop a conservative nonparametric distribution - free confidence bound for the amount of shift and give some Monte Carlo results to show how conservative the bound is.     

Partitioning Pearson's Chi-squared Statistic for Singly Ordered Two-way Contingency Tables

This paper presents a partition of Pearson's chi-squared statistic for singly ordered two-way contingency tables. The partition involves using orthogonal polynomials for the ordinal variable while generalized basic vectors are used for the non-ordinal variable. The benefit of this partition is that important information about the structure of the ordered variable can be identified in terms of locations, dispersion and higher order components. For the non-ordinal variable, it is shown that the squared singular values from the singular value decomposition of the transformed dataset can be partitioned into location, dispersion and higher order components. The paper also uses the chi-squared partition to present an alternative to the maximum likelihood technique of parameter estimation for the log-linear analysis of the contingency table.     

论佛教文化资源的旅游开发

我国的佛教文化资源丰富,随着宗教旅游日益成为现代旅游的热点,加大其开发利用程度以满足游客的需求已成为必然。本文立足于佛教旅游开发的资源条件、区位条件分析,探索了我国佛教文化资源的旅游开发及产品设计。     

The Impact of Central-Place Theory on Wal-Mart

This study applies central-place theory to the Wal-Martization process. Central-place theory posits that there are laws determining the number, size, and distribution of cities. One of the theory's major premises is its emphasis on the size and spacing of towns that specialize in selling goods and services. The Wal-Mart blueprint has adopted the central-place model in that it follows an ordered region with snowflake-like proportion. For example, the geographic expansion of Wal-Mart stores has been one of diffusing up the urban or metropolitan hierarchy over the years. Overall, the authors of this study conclude that the effectiveness of such spatial/organizational communication has contributed to Wal-Mart's successful expansion worldwide.