国外保险业效率研究概况及启示

基于效率研究对保险业经营者和监管者的应用重要性,本文对国外保险业效率研究的理论基础、主要方法、及其重要结论作了较详细的论述。并在此基础上概括出了如下启示:(1)效率研究不仅是理论界所关心的问题,更是监管当局与实务界引起高度重视的问题;(2)效率研究拓宽了对我国保险业研究的思路及方法。(3)效率研究作为一项综合性的考核指标,不但可以用于监管当局对各保险机构的评价,还可以为保险业管理者考核和完善内部管理水平提供评价依据。     

可分Banach空间中的微分包含

在可分的Ｂａｎａｃｈ空间中研究微分包含ｘ′∈Ｆ（ｔ，ｘ）解的存在性，对Ｋｉｓｉｅｌｅｗｉｃｚ的结果作了改进．     

Tests of Symmetry in Three-dimensional Contingency Tables Based on Phi-divergence Statistics

In this paper we introduce a family of test statistics for testing complete symmetry in three-dimensional contingency tables based on phi- divergence families. These test statistics yield the likelihood ratio test and the Pearson test statistics as special cases. Asymptotic distribution for the new test statistics are derived under both the null and the alternative hypotheses. A simulation study is presented to show that some new statistics offer an attractive alternative to the classical Pearson and likelihood ratio test statistics for this problem of complete symmetry.     

On the Construction of Nearest–Neighbour Balanced Row–Column Designs

Nearest–neighbour balance is considered a desirable property for an experiment to possess in situations where experimental units are influenced by their neighbours. This paper introduces a measure of the degree of nearest–neighbour balance of a design. The measure is used in an algorithm which generates nearest–neighbour balanced designs and is readily modified to obtain designs with various types of nearest–neighbour balance. Nearest–neighbour balanced designs are produced for a wide class of parameter settings, and in particular for those settings for which such designs cannot be found by existing direct combinatorial methods. In addition, designs with unequal row and column sizes, and designs with border plots are constructed using the approach presented here.     

On Efron's Parameterization

This paper discusses a curved exponential family of distributions which is defined by a differential equation with respect to the expectation parameters in the two–dimensional exponential family. The differential equation considered here is the same as the one given by Efron (1975) for the trinomial distribution. This equation is extended here to a general exponential family, and called Efron's parameterization in the two–dimensional exponential family. The solution of Efron's parameterization is obtained explicitly in an exponential family, although Kumagai & Inagaki (1996) showed that there exists no proper solution of Efron's equation for the trinomial distribution, in line with the counterexample given by Efron (1975 p. 1206). The paper gives some characterizations of Efron's parameterization with special reference to Fisher's circle model. The implications of these characterizations are the two–dimensional normal distribution and a spiral curve in the plane.     

Auti-de Sitter时空的事件视界

通过运用零曲面方程，得到了Auti—de Sitter时空事件视界方程，研究了方程的解析解，并利用计算机软件，确定Auti—de Sitter时空事件视界位置，结果表明，与de Sitter时空不同，Auti—de Sitter时空只有黑洞外事件视界和黑洞内事件视界两个事件视界，而没有宇宙事件视界。     

有机化学中的异构现象

本文就有机化学中异构现象的类别、特征、实例进行了论述。     

东北民间故事的审美构成浅论

东北民间故事以其独特的审美特性的构成,即思维形态的虚幻性、象征意象的隐喻性、结构模式的立体性,建构了一个丰富多彩的艺术世界,跨越了浩瀚悠邈的时空,满足了东北民众及其他地区民众多种多样的审美需求,同时也使得东北民间故事获得了永久的艺术生命力。     

无扩频矩阵知识二维扩频系统的盲同步

针对加性白高斯噪声信道,考虑未知二维扩频矩阵的条件下,提出了一种二维扩频系统的时频同步方法。该方法利用二维扩频矩阵周期性重复的特点,先估计出频率偏差,再通过滑动暂存窗求相关矩阵最大特征值,完成信号的时间同步。计算机仿真结果验证了该方法的有效性。     

阴极发射电流对磁控管性能的影响

利用三维粒子模拟软件,比较研究了在磁控管模拟计算中三种阴极发射方式在电流控制、宏粒子数和计算度上的不同,确定了Beam发射是电流控制的最好发射模式;在固定电子能量的基础上,研究阴极电流发射密度分别为9A/cm 3A/cm~2和7A/cm~2下的输出频谱和模式竞争过程,研究结果表明:选择合适的发射电流大小有利于磁控管频谱噪声抑制．