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用Matlab编写的指纹特征提取程序，能运行对初学者帮助很大！(Prepared using Matlab fingerprint feature extraction procedures, will be able to run very helpful for beginners!)

在过程控制中，按偏差的比例（P）、积分（I）和微分（D）进行控制的PID控制器（亦称PID调节器）是应用最为广泛的一种自动控制器。(In process control, according to the ratio of deviation (P), integral (I) and differential (D) to control the PID controller (also known as PID regulators) is the most widely used an automatic controller.)

The document describes seismic signal processing. Main function is to extract the edge of the seismic signal.

说明：  在网上下载的好用的傅里叶变换程序 时域变频域信号分析(Fourier transform program)

line codes: bipolar of a bits secuence

manual segmention in matlab

有限元法求解电场,精度高，计算速度快，可用于点电荷电场、电磁场等条件下的求解(Finite element method for solving electric field, high precision, fast calculation, can be used to point charge electric field, under the conditions of solving electromagnetic field)

this file can help to determin mosfet characterstics

灰色预测是一种对含有不确定因素的系统进行预测的方法。灰色预测通过鉴别系统因素之间发展趋势的相异程度，即进行关联分析，并对原始数据进行生成处理来寻找系统变动的规律，生成有较强规律性的数据序列，然后建立相应的微分方程模型。(Dissimilarity trends, namely, correlation analysis, and generate raw data processing system to find the law changes, generate a strong regularity of the data sequence, then the corresponding differential equation model.)

说明：  Visual C 与Matlab的混合编程，适合VC与matlab混合编程的初学者(Visual C mixed with the Matlab programming, suitable for mixed-VC with matlab programming for beginners)