数据域与微机应用系统

本文着重描述在数据转换过程中如何把数据信息按区域进行细分，以弄清数据信息的性质，进而确定一个最优数据通路，建立高效应用系统。     

三维光盘存储系统中双光头同步控制的频域分析与辨识

详细介绍了双光头同步控制原理.对采集的伺服模块聚焦误差跟踪信号及共焦模块读写光头的聚焦线圈驱动信号进行了频域分析,并以此两路信号作为系统输入输出,分别对三种参数模型进行参数优化.根据3种模型的频率响应及阶跃响应,选择双光头同步控制过程的参数模型为[450]阶的ARX模型.实测曲线与模型仿真结果符合度(fit)为78.0259%.     

磁畴形成的原理探索

本文运用量子力学和固体物理学分析铁磁物质及其磁畴形成的原理     

轴拉杆随机分析的域外奇点法

采用随机域外奇点法对轴拉杆件进行了分析．考虑杨氏模量的不确定性，得到了不同相关类型、不同相关长度下的解析解，并分析了相关类型、相关长度以及随机场中点离散法对位移方差的影响．     

The genetic diversity of cen-tral and peripheral popula-tions of ratlike hamster(Cricetulus triton)

The impact of habitat fragmentation and isolation on the genetic diversity of populations has attracted much attention in studies of meta-population and conservation biology. In this work, using the randomly amplified polymorphic DNA (RAPD) technique, we studied the genetic diversity of central, peripheral and peninsular populations of ratlike hamster, which were collected in five locations of the North China Plain and its surrounding areas, in 1999. The study revealed that, ⅰ) the genetic diversity of central population of Raoyang County＞the sub-central populations of Gu'an County and Taikang County＞the peripheral population of Shunyi District＞the peninsular population of Mentougou District; ⅱ) the genetic diversities of the five populations were positively correlated to the nearest distances to the peripheral line of population distribution; ⅲ) there were significant differences of gene frequencies of some RAPD fragments among the five populations. More RAPD fragments disappeared in peripheral populations than in central or sub-central populations. The frequencies of two RAPD fragments were correlated to the latitude. This study clearly indicated that the variation of the genetic diversities of the five populations was caused by edge effect and frag- mentation through the enhanced inbreeding and genetic drift, and thus supported the view that habitat fragmentation and related edge effect reduce the population genetic diversity.     

移民村落的权力博弈与移民的适应——以广东三峡移民村落白村为例

通过对一个安置在广东的三峡移民村落白村首任村长上任、下台的调查与分析,探究了移民村落的乡村权力“博弈”过程,以及这种乡村权力与移民适应的关系,指出帮助移民获得适当的社会资本是帮助移民更好地适应的策略之一。     

并矢展开的算法与实现

本文讨论了多变量频域理论中并矢展开法的并矢展开算法与实现,以期使计算得到简化并减少计算量。     

关于矩阵方程AXB=CYD

应用矩阵的初等变换技巧，给出了任意域上矩阵方程AXB=CYD的通用表达式及解法。     

域外奇点法分析薄板的平面应力问题

本文推导了两边简支无限长薄板平面应力问题的基本解，该基本解为级数解，为了便于应用和提高计算精度，还求出了这些级数的和函数。把该基本解应用在域外奇点法中可分析一对边简支另一对边为任意的矩形薄板的平面应力问题。本文给出的算例表明该法有计算量少、精度高的优点。