中国人身保险需求的实证分析

从理论角度分析了GDP、收入水平、人口因素、社会保障、通货膨胀等因素对我国人身保险需求的影响,并依1990年到2005年的相关数据,运用因子分析、平稳性检验、多元线性回归等方法对上述因素进行了实证分析.在分析中针对多重共线性问题,引入偏最小二乘回归对模型加以改进.同时,对我国人身保险市场发展提出了要加大寿险宣传力度、创造良好宽松的外部环境、优化险种结构、完善保险法规建设等建议.     

Stone—Geisser检验在顾客满意度中的应用

偏最小二乘法（PLS）模型对数据没有做任何的分布假设，因此基于分布假设的统计检验方法无法实现对PLS模型预测效度的度量。采用非参数检验方法——Stone-Geisser检验，通过盲目（Blindfold）过程进行预测效度的度量。使用MATLAB软件实现了两种Stone-Geisser检验——公因子方差检验与冗余检验。在地税部门顾客满意度应用中，Stone-Geisser检验结果与PLS模型其他结果保持内在一致，从而表明检验方法是有效的。因为Stone-Geisser检验基于交叉验证技术，因此非常适合作为PLS模型的基准检验方法。     

On linear combinations of independent exponential variables

The exact distribution of a linear combination of n indepedent negative exponential random variables , when the coefficients cf the linear combination are distinct and positive , is well-known. Recently Ali and Obaidullah (1982) extended this result by taking the coeff icients to be arbitrary real numbers. They used a lengthy geometric.

al approach to arrive at the result . This article gives a simple derivation of the result with the help of a generalized partial fraction technique. This technique also works when the variables involved are gamma variables with certain types of parameters. Results are presented in a form which can easily be programmed for computational purposes. Connection of this problem t o various problems in different fields is also pointed out.     

马克思的生产率理论再考察

西方国家的劳动生产率概念不同于马克思的劳动生产率概念，马克思已明确区分劳动生产率和劳动过程的各种投入要素的使用效率，即西方经济学中使用partialproductivity，马克思的劳动生产率的内涵是指总劳动过程的最终效率。马克思的劳动生产率概念类似当代西方经济学使用的TotalFactorProductivity，但两者又有区别。     

论汉英否定篇章衔接功能的对比

在篇章连接方面,汉语否定词和英语否定词都具有连接篇章的功能,它们起篇章连接功能的手段主要是替代。文章通过篇章中汉英否定衔接手段的分析,明确了汉英否定的篇章衔接的作用,有助于提高篇章分析能力。衔接是篇章的有形网络,对篇章连贯起着重要作用,我们要正确辨认和运用汉英否定的篇章衔接功能,从而提高篇章分析能力。     

Pivotal ouantities based on the conditional distribution function transform in models with accessory parameters

A general formula for porducing pivotal quantities defined free of accessory paramelers is investigated. In addition to similarity, resulting tests often have exact or asymptotic optimal properties In other cases, the sample correlation with statistics sufficient for the accescory parameters produce a simple similar test and a consistent, asymptctically normal estimator. The latter mathod should perform best when the accessories are highly dispersed.     

反预期构式“哪里是A,而是B”

根据＂反预期＂理论,＂哪里是A,而是B＂构式从语义来说,它主要表示三种意思：1）不是A,是B;2）形为A,实为B;3）不仅仅A,而且B。在语用方面,它往往通过先扬后抑或先抑后扬,以增强表达效果。     

Sensory analysis via multi-block multivariate additive PLS splines

In the last decade, much effort has been spent on modelling dependence between sensory variables and chemical–physical ones, especially when observed at different occasions/spaces/times or if collected from several groups (blocks) of variables. In this paper, we propose a nonlinear generalization of multi-block partial least squares with the inclusion of variable interactions. We show the performance of the method on a known data set.     

Empirical Likelihood for a Heteroscedastic Partial Linear Errors-in-Variables Model

The purpose of this article is to use the empirical likelihood method to study construction of the confidence region for the parameter of interest in heteroscedastic partially linear errors-in-variables model with martingale difference errors. When the variance functions of the errors are known or unknown, we propose the empirical log-likelihood ratio statistics for the parameter of interest. For each case, a nonparametric version of Wilks’ theorem is derived. The results are then used to construct confidence regions of the parameter. A simulation study is carried out to assess the performance of the empirical likelihood method.     

驳世纪之交否定鲁迅的几个论点

本文介绍、批评了几位作家、学者否定鲁迅的论点,为世纪之交的鲁迅研究摄影留念。本文坚持认为,鲁迅是20世纪中华民族的伟人之一,对他的否定与贬损,必然是对伟大的中华民族精神的亵渎;并且否定鲁迅,从来都不是一个单纯的学术问题,而是有着鲜明与强烈的政治色彩。