PPM

this code simulates a 4fuzzy PID cotroller for ball-baem system and 3 other systems.

matlab下实现kaplan算法，测量心率变异性特征的文件，包括谱分析工具(Matlab under kaplan algorithm, measuring heart rate variability characteristics of the document, including spectral analysis tools)

创建一个文件名，然后根据建立的文件名，和选定的路径，保存内容(save )

zileger和getfod函数可以实现对传递函数分析，计算PID的三个参数，便于进行设计PID(zileger and getfod function can be achieved on the transfer function analysis, computation of the three PID parameters, to facilitate the design of PID)

matlab6.5下写的三类问题的基于最大最小聚类方面写的聚类程序(matlab6.5 wrote under the three categories based on the largest area was the smallest cluster clustering procedure)

Convert from latitude, longitude, and altitude (geodetic with respect to the WGS-84 ellipsoid) to a position vector in the Earth-centered, Earth-fixed (ECEF reference frame.

MATLAB function to initialize and call the solve_sps2d function, which implements a 2-D solution of the nonlinear wave equation using a psuedospectral / staggered A-B method, including attenuation modeled with two relaxation mechanisms. This example demonstrates harmonic generation within a plane wave given a B/A parameter of 5.2. To increase the distance of propagation, scale the sample grid (num_axpts) by a factor(s) of 2.( MATLAB function to initialize and call the solve_sps2d function, which implements a 2-D solution of the nonlinear wave equation using a psuedospectral /staggered A-B method, including attenuation modeled with two relaxation mechanisms. This example demonstrates harmonic generation within a plane wave given a B/A parameter of 5.2. To increase the distance of propagation, scale the sample grid (num_axpts) by a factor(s) of 2.)

数学建模第十章线性回归方程，简单易懂，适合数学建模学生(Mathematical modeling, the tenth chapter, linear regression equation)

交织源程序，卷积交织，分块交织，级联交织等(Interwoven source code, convolutional interleaving, block intertwined, interwoven cascade)

说明：  图像数字水印的方案毕业论文，基于dct和dwt的算法(Image digital watermarking scheme graduation thesis, based on DCT and DWT algorithm)