3-1力对点之矩 3-2力偶·力偶矩 3-3平面力偶系的合成与平衡条件

1-1静力学的基本概念 1-2静力学公理

1 Introduction Background for New methodology Modern natural science methodology is mainly based on matter and energy Even though matter and energy are still necessitate factors in information system, yet the characteristic feature of information systems, particularly the complex ones, is neither matter nor energy but information Without information, the complex information systems, like brain and intelligent life. cannot be understood

1.1 System Fundamentals Definitions System: Definitions System- integrity of elements that form a certain structure internally and perform certain functions externally. L von Bertalanffy: System --set of interrelated elements

List of contents From Knowledge to Strategy 2. Classical Model of Decision-Making 3. Information Theory of Decision-Making 4. Unified Theory

1. Model of Communication System Noise Source Sink T Channel T: Transformation Source, sink, and channel are given beforehand Transformation to match the source with the channel

Problems to be concerned with 1. How should we define the concept of Information 2. What are the typical features of Information compared with matter and energy 3. What are the relationship and difference between Shannon Information and comprehensive Information 4. How to reasonably classify Information 5. How to properly represent Information

§12—1 蜗杆传动的特点和类型 §12—2 圆柱蜗杆传动的主要参数和几何尺寸 §12—3 蜗杆传动的失效形式、材料和结构 §12—4 圆柱蜗杆传动的受力分析 §12—5 圆柱蜗杆传动的强度计算 §12—6 圆柱蜗杆传动的效率、润滑和热平衡计算

6-1棘轮机构 6-2槽轮机构 6-3不完整机构 6-4凸轮间歇运动机构

13-1带传动的类型和应用 13-2带传动的受力分析 13—3带的应力分析 13-4·带传动的弹性滑动和传动比