Partial-Differential-Equations

通用模拟退火优化算法 General simulated annealing algorithm 模拟退火优化算法能过较大限度的避免局部最优解 (General simulated annealing optimization algorithm General simulated annealing algorithm simulated annealing optimization algorithm can have a greater level of local optimal solution to avoid)

语音端点的检测，短时能量、平均过零率,门限，matlab(vad enfram enger zcr)

最速下降法，基於matlab開發環境，可用於求解優化問題(The steepest descent method, based on matlab development environment can be used to solve optimization problems)

拉格朗日插值法实现代码 可生成用n-1次Lagrange插值函数插值的结果(Lagrange interpolation method to achieve code)

用PSO训练BP神经网络(matlab程序)(With PSO training BP neural network (matlab program))

对图像以嵌入率为rate进行顺序LSB嵌入，然后进行卡方隐写分析(Rate on the image to be embedded in the order of LSB embedding rate, and then chi-square steganalysis)

一维声波动 采用FDTD进行编程，代码超简单(1D FDTD)

基于负相关的信号改善方法在脑功能近红外光谱成像中（运动伪迹移除）(Negative correlation-based approach to improve signal (to remove motion artifacts) in brain functional near-infrared spectroscopic imaging)

JPEG 仿真 在Matlab7 上运行，效果最佳(The code of JPEG.If some one want using it,please download。)

Eigenfunctions of integrable planar billiards are studied — in particular, the number of nodal domains, ν of the eigenfunctions with Dirichlet boundary conditions are considered. The billiards for which the time-independent Schrö dinger equation (Helmholtz equation) is separable admit trivial expressions for the number of domains. Here, we discover that for all separable and nonseparable integrable billiards, ν satisfies certain difference equations. This has been possible because the eigenfunctions can be classified in families labelled by the same value ofm mod kn, given a particular k, for a set of quantum numbers, m, n. Further, we observe that the patterns in a family are similar and the algebraic representation of the geometrical nodal patterns is found. Instances of this representation are explained in detail to understand the beauty of the patterns. This paper therefore presents a mathematical connection