1

用中心差分法计算输入地震动的位移时程曲线，该函数仅为示例用，在计算短周期结构的反应时，可能不准确，需要减小时间间隔 ( central difference method)

仿照着《小波去噪中软硬阈值的一种改良折衷法》一文写的程序，对比了软、硬以及软硬阈值折衷法的信噪比及均方根误差。仿真出来之后，原信号的信噪比是负的，不知道为什么？均方根误差的值也比较大，不知何解？信噪比和均方根误差是参照《基于matlab的小波去噪仿真》：吴伟，《信息与电子工程》 一文写的(Modeled on the written procedures of the hard and soft threshold wavelet de-noising an improved compromise " , compared to the soft and hard compromise between the hard and soft threshold signal-to-noise ratio and root mean square error. Out of the simulation, the signal-to-noise ratio of the original signal is negative, do not know why? The value of the root mean square error is relatively large, do not know why? Signal-to-noise ratio and root mean square error with reference to the wavelet denoising matlab-based simulation: Wu Wei, " Information and Electronic Engineering" written)

支持向量机是用于分类与回归的技术。由于其自身的诸多缺点，如无法获得概率输出，需要估计一个误 差参数C，以及必须使用Mercer 核函数等。相关向量机算法，克服了SVM 上述缺点，RVM 能获得与SVM 相比拟的推 广性能，并且更为稀疏。在此基础上，文中介绍了一种RVM 回归用于分类的新分类方法，用RVRC 来表示。并通过 实验证明了它的可行性。(Support vector machines for classification and regression techniques. Due to its many shortcomings, such as the probability that the output can not be obtained, need to estimate an error parameter C, and the need to use Mercer kernel function and so on. Relevance vector machine algorithm to overcome these shortcomings of SVM, RVM and SVM can be obtained comparable to promote performance and more sparse. On this basis, the paper introduces a RVM regression was used to classify new classification method, RVRC to represent. And through experiments proved its feasibility.)

说明：  C 语言学习教程 唐浩强著 很实用 适合初学者(C language learning was very useful tutorial for beginners Tang Haojiang )

matlab程序仿真 元胞自动机的森林火灾模型 绿黑红三种状态分别代表树木/空地/着火 (Matlab simulation of the cellular automata model of the forest fire Green and red three states represent the trees/clearing/fire)

对图像进行任意角度旋转 图像渐变 运用调色板设计技术将灰度图像彩色化 等5个MATLAB 图像处理 代码(Rotate the image at any angle image gradient design using the gray image palette color and so on five MATLAB image processing code)

先进PID控制程序原代码和仿真（很详细）(Advanced PID control program the original code and simulation (very detailed) 双语对照查看 )

纸张计数MATLAB源码，采用数学形态学原理实现。要求纸张码放整齐。计数精度很高。(Paper count MATLAB source, using the principle of mathematical morphology to achieve. Paper neatly stacked. High counting accuracy.)

寻找距离某一点最近的几个点，返回对应的点的位置及距离该点的距离(Find a few points closest to a given point , returns the corresponding location of the point and the distance from the point)

这是一份很好的资料，对于初学者来说很好，很有用(This is a good, very good, very useful for beginners)