1.1 数据库系统概述 1.2 数据模型 1.3 数据库系统结构 1.4 数据库系统的组成 1.5 数据库技术的研究领域 1.6 小结

中国人民大学：《数据库系统概论 An Introduction to Database System》课程教学资源（PPT课件讲稿）第一章 绪论（1.1-1.2）数据库系统概述、数据模型

平推流反应器 Piston Flow Reactor (PFR) 活塞流模型或理想置换模型 This type of units is illustrated in the following figure. This reactor consists of a tube inside which the reaction medium flows. This makes i t t h e s i m p l e s t s t r u c t u r e conceivable f or a continuou s o p e r a ti o n s ys t em . Th e h ea t exchange necessary to add heat to the system or to remove it generally occurs ac ros s the tube wall

外界 surroundings 系统 system 温度 temperature 压强 pressure 物态参量 state parameter

1、概述 2、力法求解超静定、力法正则方程 3、 利用对称性简化超静定系统的计算、内力超静定系统 Statically Indeterminate System

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镇静催眠药 抗癫痫药 抗精神失常药 镇痛药 中枢兴奋药

抗溃疡药 助消化药 止吐药 促动力药 肝病辅助治疗药 胆病辅助治疗药

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本章用一个具体例子说明系统灵緻度理论( System Sensitivity Theory)所要研究的问 题范畴,并概要地介绍稳健性( Robustness)等与灵敏度理论有关的一些基本术语与概念。 本章拟对系统灵敏度理论提供一个比较全面的概述