prt-2

the function to create the mesh, fro Openfem

AX.25是一个数据打包协议，用于信号数据提供高效率的传输(AX.25 is a data package protocol for signal data to provide efficient transmission)

设计一个程序，用后向Euler 法/梯形法求解电路系统的MNA 方程（该方程由stamp 程 序得到），其中线性方程的求解采用GCR 迭代法。(Design a program that uses the backward Euler method/trapezoid method for solving circuit system MNA equation (the equation obtained by the stamp program), in which the linear equations using GCR iteration.)

matlab环境下对时变，多径信道进行估计，服从瑞利分布。。。(Prediction program of wireless channel in Matlab environment)

说明：  快速反卷积。计算速度很快，必要的时候需要手动更改m文件里的fft点数以改变计算精度。很好的代码。(Rapid deconvolution. Computing speed very quickly, when necessary to manually change the m file points to change the fft calculation accuracy. Very good code.)

采用DelayTime_MutualInformation互信息法计算混沌时间序列的delaytime的Matlab原程序(used DelayTime_MutualInformation mutual information calculation mixed turbid time series delaytime Matlab original program)

matlab设计的数字滤波器，有巴特沃斯，切比雪夫1，切比雪夫2，椭圆四种，分别都有高通，低通，带通几种，天津工业大学课程设计(matlab digital filter design, there Butterworth, Chebyshev 1, Chebyshev 2, oval four, each of which has a high-pass, low-pass, band-pass several, Tianjin Polytechnic University curriculum design)

说明：  code to do something i dont kno tamala

Evaluate the value of an arithmetic expression in Reverse Polish Notation. Valid operators are +, -, *, /. Each operand may be an integer or another expression. Some examples: [ 2 , 1 , + , 3 , * ] -> ((2 + 1) * 3) -> 9 [ 4 , 13 , 5 , / , + ] -> (4 + (13 / 5)) -> 6 分析：这一题就是写程序计算逆波兰式的结果，遍历表达式，碰到操作数入栈，碰到操作符就从栈顶取出两个操作数，再将计算后的结果入栈，最后栈中剩余的唯一操作数就是计算结果。(. Evaluate the value of an arithmetic expression in Reverse Polish Notation Valid operators are+,-,*,/Each operand may be an integer or another expression Some examples:.. [" 2" , " 1" , " +" , " 3 " ," * " ]-> ((2+ 1)* 3)-> 9 [" 4 " ," 13 " ," 5 " ," /" ," + " ]-> (4+ (13/After this problem is to write a program to calculate the inverse Polish results, iterate expression operand stack encounter, encounter operator to fetch two operands the stack, and then calculated as follows:> 6 Analysis- 5)) The results of the stack, the only remaining operand stack is the final calculations.)

基于MATLAB的电力系统分析工具箱Matpower 4.1版本(MATLAB based Power system analysis toolbox--- Matpower version:4.1)