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

1. Information Processing Definition of Information processing All operations exerted to the information itself for its better utilization Information processing is necessary because most of the information in its original form may not be good for use. Thus information processing is the basis of later operations Two categories of information processing: 1)Shallow Level of Information Processing 2)Deeper level of Information Processing

§0—1 本课程研究的对象和内容 §0—2 本课程在教学中的地位 §0—3 机械设计的基本要求和一般过程

5-1轮系的类型 5-2定轴轮系及其传动比 5-3周转轮系及其传动比 5-4复合轮系及其传动比 5-5轮系的应用

14—1轴的功用和类型 14—2轴的材料 14—3轴的结构设计 14—4轴的强度计算 14—5轴的刚度计算 14—5轴的临界转速的概念

胸部创伤 hest trauma 胸内脏器:肺和心脏大血管 胸内负压:-078~-0.98kPa(-8~-10cmH2O) 胸部伤后易发生呼吸和循环功能障碍 个平时多为交通事故伤 战时阵亡者约2%~27%死于胸部伤 美国每年15万人死于创伤,其中胸伤占25% 我国:

Why is the element stiffness matrix singular in a finite element formulation? 1. So that it can accomodate rigid element dis- placements without introducing spurious nodal 2 Because we made a mistake in the formula- tion the stiffness matrix should not be sin- g 3. Because we havent enforced any displace ment boundary conditions(it's a variational approach after all) Statement(1)

The work of the external forces in the spring system of the figure is given by W=B*(U1+U2+U3)(2) W=P1*U1+P2米U2+B米U3(3) None of the above statements

案例1 1990年,阿根廷某公司应中国某公司的请求,报出镁矿石初级产品200公吨,每公吨2 150美元,即期装运的实盘。但中方接到阿方报盘,未作还盘,而是一再请求阿方增加数量, 降低价格,并延长有效期,阿方公司将数量增到350公吨,每公吨价格为CIF上海价2100 美元,有效期经三次延长,最后延长至9月25日,中方公司于9月20日来电表示接受该盘。 阿方接到该电报时,得知国际市场镁矿石价格上扬,因此决定拒绝成交,于是向中方发 电,称:“由于国际市场镁矿石价格发生变化,货物已于接到你方电报时售出。”而中方对 此拒绝接受,认为中方是在发盘有效期内接受了阿方发盘,坚持要求按发盘的条件执行合同, 阿方如不执行合同,则要赔偿中方的损失,即差价25万美元

Part 2.: introduction to thermochemistry SB&VW-14.1-14.6 Until now, we have specified the heat given to the devices analyzed, and not concerned ourselves with how this heat might be produced. In this section, we examine the issue of how obtain the heat needed for work