UNCLASSIFIED Unclassified Clinton administration 1993 National security space activities shall contribute to US national security by supporting right of self-defense of US, allies and friends deterring, warning, and defending against enemy attack assuring hostile forces cannot prevent our use of space ountering, if necessary, space systems and services used for hostile purposes enhancing operations of U. S. and allied forces ensuring our ability to conduct military and intelligence space-related satisfying military and intelligence

The Seventies Readings 1. Chap. 1, \Spaceflight and the Myth of Presidential Leadership.\ 2. Chap. 4 and 5, \Beyond Horizons. 3. Chap. and 2, Wheelon. Strategic Themes: 1. Retrenchment for NASA-NASA and the country out of sync. 2. A truck to nowhere-the seeds of the Challenger disaster

Space policy Notes on Space Law and policy Derived from multiple sources. Please see bibliography at end of notes mportant Lecture themes Space law\is international law, governed by treaties and custom Space policy\is set by individual nations or subgroups within a nation, and typically

3.6.1 稳态误差的定义 3.6.2 系统类型 3.6.3 扰动作用下的稳态误差

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5.3.1积分与微分因子 5.3.2一阶因子 5.3.3二阶因子 5.3.4传递延迟

第一章自动控制的一般概念 1.1引言 1.2自动控制系统示例 1.3闭环控制和开环控制 1.4自动控制系统的分类 1.5对自动控制系统的基本要求对本课程的基本要求

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Lecture 1 Introduction and classification of geometric modeling forms 1.1 Motivation Geometric modeling deals with the mathematical representation of curves, surfaces, and solids necessary in the definition of complex physical or engineering objects. The associated field of computational geometry is concerned with the development, analysis, and computer implemen tation of algorithms encountered in geometric modeling. The objects we are concerned with in engineering range from the simple

Lecture 6 B-splines(Uniform and Non-uniform) 6.1 Introduction The formulation of uniform B-splines can be generalized to accomplish certain objectives These include Non-uniform parameterization Greater general flexibility Change of one polygon vertex in a Bezier curve or of one data point in a cardinal(or interpolatory) spline curve changes entire curve(global schemes) Remove necessity to increase degree of Bezier curves or construct composite Bezier curves