The main content is to study the stability of some cobweb models in which supply or demand curves are given nonlinear form . researches on the stability are done and the existent conditions and stable regions about equilibrium price are obtained . chapter five , application of logistic equation in cobweb models 第四章：对具体几个蛛网模型的分析本章是本文研究的核心和重点之二，主要研究了对于供给函数或需求函数为特定非线性形式的几个蛛网模型的动态分析与稳定性问题，分别对需求函数或供给函数为非线性函数时的蛛网模型，进行了动态分析和稳定性分析，从而得出了其均衡价格的存在条件及稳定区间。
On the basis of the characters of geological structure and the changes of time and space of historical earthquake , according to the indexes of li yulong ' s earthquake zone . the regionalization of earthquake damage in baoji city is put out , this is that there are two dangerous earthquake regions which line of longxian - qianyang - baoji urban and meeting region of qishan - fufeng - meixian , and one earthquake stable region 摘要根据宝鸡市地质构造特徵与历史地震的时空变化及李玉龙的地震带的划分标准，将宝鸡市划分为两个危害性地震地区：陇县千阳宝鸡市区；岐山、扶风、眉县交界地区与一个相对稳定区。
An upper bound of the closed loop performance statistic given by the index of quadratic performance is found for all admissible parameter uncertainties . the poles of the closed loop systems is described by the delta operator models in the specified stable region of the complex plane which makes the poles in the specified region when the sampling period is becoming shorter 采用线性矩阵不等式处理方法及李亚普诺夫二次稳定性理论，分析、证明了极点约束控制的存在条件，并利用lmi方法把delta算子系统的极点配置在一个稳定的区域内，解决了delta域内的极点配置问题，使得期望的极点始终在这个稳定的区域内。
Then an lqocm linear quadratic optimal control model is presented . finally , experiments demonstrate that , for the end - to - end drts whose control matrix - pmb g falls into the stable region , the ic - eat is convergent and stable . moreover , it is capable of providing better qos guarantees for end - to - end aperiodic tasks and improving the system throughput 在这之中，一部分系统常常运行于动态与不确定环境，比如：在一个自动监控系统中，被监控目标数的动态变化使得系统中任务的到达与离开呈现出非周期性此外，任务的执行时间也随着系统任务数目标距控制中心距离的变化而变化。
From the theoretical calculation and the experimental results , we makehe conclusion that the last cavity setup is most suitable for the wavelength tuning . we calculated the stable regions and the peak power on the sesam , at the same time , ave the beam size on the sesam and on the crystal . we achieved the q - switchedutput with a three - mirror folded - cavity after optimizing it 计算了v型腔和五镜腔的稳区、晶体和sesam上光斑半径、 sesam上的峰值功率密度，对腔的参数进行了优化，并做了sesam被动调q和锁模的激光实验，实现了v型腔调q 、五镜腔调q的激光输出。
