welch

在傅立叶变换光学中夫琅和费衍射场的强度分布就等于屏函数的功率谱。因此我们可以直接将光屏进行傅立叶变换，再处理得到衍射图样。(In the Fourier transform optics, Fraunhofer diffraction field intensity distribution is equivalent to the power spectrum display function. Therefore, we can directly Guangping Fourier transform, and then to handle any diffraction pattern.)

This paper presents a new synchronous-referenceframe (SRF)-based control method to compensate power-quality (PQ) problems through a three-phase four-wire unified PQ conditioner (UPQC) under unbalanced and distorted load conditions. The proposed UPQC system can improve the power quality at the point of common coupling on power distribution systems under unbalanced and distorted load conditions.

Pengenalan matlab dari dasar

solarized 高亮文件，各种语言，使用起来非常方便(solarized highlight)

F16开环动力学系统模型。输入为油门及三个舵面控制，以及系统低阶、高阶选择器。输出为飞机飞行状态以及油门大小。采用Quaternion四元素法，可以有效避免俯仰角theta达到90°时数学奇异现象。(F16 open-loop dynamic system model. Throttle input and three rudder control, and system low, high selector. Output is the size of aircraft status, and throttle. Quaternion method using the four elements, can effectively avoid the pitch angle theta to 90 °, mathematics strange phenomenon.)

load flow study programme using gauss siedal method for infinite iteration

FSK的SIMULINK仿真代码，包括调制解调与频分复用(FSK simulink modulation and demodulation)

MATLAB code on pontriangin s maximum principle to minimise the TPBVP control trejectory

利用线性移位寄存器序列的线性关系，用求解矩阵的方法求解移存器序列的生成多项式(get LFSR sequence prime Polynomial by the line relationship of the sequence )

有限差分法求轴承雷诺方程 复化辛普森数值积分求承载能力(solviing the reynolds eq. by the means of finite difference and calc. the total load using compoud simpson s numerical integrial)