Q3

paper based on pca and image fusion

在matlab平台下产生信号序列通过QPSK方式调制通过高斯信道以及瑞利信道，对其中的过程的信号时域以及其频谱，星座图情况进行分析(Matlab platform in the signal sequence generated by the QPSK modulated by the Gaussian channel and Rayleigh channel, which processes the signal for time-domain and its spectrum, constellation analysis of the situation)

transformée de laplace dynamique

计算燃料电池膜的传质分析，包括各层之间的氧气、二氧化碳以及水的传质。(Calculating cell mass transfer)

苦苦写的东东，但愿对大家有所帮助，本来不舍得拿出来的。(Struggling to write east, may be helpful to you, was not willing to take out.)

像素相关性计算函数，该指标对于衡量一个加密后的图像安全性能(Pixel correlation calculation function, the safety performance indicators for measuring an image after encryption)

拟牛顿法和最速下降法(Steepest Descent Methods)一样只要求每一步迭代时知道目标函数的梯度。通过测量梯度的变化，构造一个目标函数的模型使之足以产生超线性收敛性。这类方法大大优于最速下降法，尤其对于困难的问题。另外，因为拟牛顿法不需要二阶导数的信息，所以有时比牛顿法(Newton s Method)更为有效。如今，优化软件中包含了大量的拟牛顿算法用来解决无约束，约束，和大规模的优化问题。(The quasi-Newton method and the Steepest Descent Methods only require that each step iterations know the gradient of the objective function. By measuring the change of the gradient, constructing a model of the objective function is sufficient to produce superlinear convergence. This method is much better than the steepest descent method, especially for difficult problems. In addition, because the quasi-Newton method does not require information on the second derivative, it is sometimes more effective than the Newton s Method. Today, the optimization software contains a large number of quasi-Newton algorithm used to solve the unconstrained, constraint, and large-scale optimization problems.)

边缘检测的matlab程序，一种不错的软件，对图像处理的学习有很大帮助(Edge Detection Matlab procedures, a good software, the image processing will be of great help to study)

NMF图像融合程序，MATLAB开发环境(NMF image fusion procedure, MATLAB development environment)

分形维数的计算分形维数的计算分形维数的计算(hurst_exponent)