巴特渥斯滤波器设计(butterworth),根据设计参数需要,设计出符合要求的滤波器,并提供示意图-Bateoushi Filter Design (3.8mA), according to the design parameters, designed to meet the requirements of filters, and to provide diagram

编写一个程序,计算平面应力状态及空间应力状态的主应力,最大剪应力,如为平面应力状态则需输出方位角agl斜截面上的应力及主方向角，画出应力圆示意图。 已知二向应力状态，ax=10MPa,ay=-20MPa,bxy=15MPa,agl=45,求主应力，最大切应力，斜截面上的应力，作出应力圆示意图。-The preparation of a program to calculate the plane stress state and stress state space of principa

C# 写的快速排序源码，并快排附带示意图。-Quicksort written in C# source code, and will soon ranked with diagram.

自制卡尔曼滤波，main 是主函数! 运行即可，p184是一个示意图！另外两个文件是滤波模型。(Homemade Calman filter, main is the main function, you can run, p184 is a schematic diagram! The other two files are filter models.)