chap9

these are to set of files. first one is used for baro and inertial integration and the erro of inertial. the second one is used for sim of reentry by use of not only its dynamics but also with EKF observants to control reentry

matlab的教程，有简易版和详细版。较为浅显易懂，对于新手来说，能够较快的入门。(matlab tutorial, there are simple and detailed version version. Relatively easy to understand for the novice is able to fast entry.)

this is a zip file for showing how particle swarm optimization find g_best with matlab.

完数判断，判断一个数是否为完数的代码C++,还行哦 嘿嘿(After the number of judgments to determine whether a number code for the complete number of C++ okay Oh Hey)

ultrasound video of a uterus

田园公司决定找出这两种面包产品的最佳产量比，即确定两种面包的日产量，使得在公司面包厂的现有生产条件下利润最高。(Bread profit )

可以做出一个漂亮的三维心形，赶快快来试试吧(Can make a beautiful three-dimensional heart-shaped, come try it)

自然边界元数学理论，于德浩教授编著。对于椭圆编制问题规划给出了较为详细数学理论解释，对于工程和理学专业的程序的编写有较好的辅助作用。(Natural Boundary Element mathematical theory, Professor Yu Dehao ed. For the preparation of the problem oval plan gives a more detailed explanation of the mathematical theory, for the preparation of professional engineering and Science program has a good supporting role.)

说明：  matlab数字滤波器设计,计算出参数便于dsp实现bandpa(Matlab digital filter design parameters calculated to achieve bandpass ease dsp)

多相合成：将多个窄带信号合称为一路宽带信号，合成后的信号频率无相互干扰(The multi-phase synthesis: multiple narrowband signals collectively known as the way broadband signals, the synthesized signal frequency interfere with each other)