 Statechart diagrams  Deployment diagrams  Component diagrams

 Class diagrams  Class relationships ▪ Association ▪ Aggregation ▪ Generalization

 Classes  Interaction diagrams  Sequence diagrams  Collaboration diagrams  Interaction diagram comparison  Reports

 What is modeling?  Four principles of visual modeling  The UML  Process and visual modeling

 Introduction to object technology  Concepts of Object Orientation

引言 统一过程 敏捷方法介绍 软件开发存在的问题 软件开发过程: Unified Process 迭代开发(Iterative development) 敏捷方法(Agile Practices)

上海交通大学：《面向对象分析与设计 Object Oriented Analysis and Design》课程教学资源（讲稿）绪论（主讲：李芳）

Which of the following expressions represents the rate of work done by the stresses during the deformation of a body of an arbitrary material?

Which of the following expressions most ac curately and simply represents the comple mentary strain energy density Uc of a linear elastic material?

Principle of Virtual Displacements Consider a body in equilibrium. We know that the stress field must satisfy the differential equations of equilibrium. Multiply the differential equations of equilibrium by an \arbitrary\displacement field T