Learn R for Applied Statistics

基于matlab的短时傅立叶变换，有语音读取功能！(Based on the short-time Fourier transform matlab, have voice reading!)

自信车轮压力分析 python 源代码 有限元分析(Wheel of bike ，python Finite Element code)

一个用于复杂网络研究中计算网络静态参数（度分布，簇系数等）的c程序（其中的数据是具体的可换成其他的数据）。很简单但是对于做复杂网络研究的却很有启发的哦。(a complex network for research computing network static parameters (distribution, Clustering coefficient, etc.) c (which is specific data can be replaced by other data). Very simple but so complex network of research is very enlightening oh.)

说明：  本程序计算的太阳角有地面点对应的太阳天顶角和太阳方位角，太阳高度角与太阳天顶角 互余，所以太阳高度角也可以通过90 度-太阳天顶角计算得到(The solar angle is calculated by the solar zenith angle and the sun azimuth angle corresponding to the earth's surface point. The sun height angle and the sun zenith angle are complementary, so the sun height angle can also be calculated by the 90 degree sun zenith angle.)

一维黎曼问题，计算流体力学，C和Frotran预言代码(Riemann problem)

二维粘弹性介质中波的传播的解析形式。应用Carcione等在1988年发表的《WAVE PROPAGATION SIMULATION IN A LINEAR VISCOELASTIC MEDIUM》一文中的方法，更加详细的介绍见英文描述。该代码对于做波场模拟的同学有很好的参考价值。( MATLABScript for obtaning the analytical solution for 2D wave propagation in a viscoelastic medium, based on the Appendix B of paper of Carcione et al. (1988)(1), corrected in (2). The source used is a Ricker wavelet in the y velocity component. A figure of the source temporal function and its inverse Fourier transform are provided to verify the good working of the method. Also works for elastic variables by substituting the values of vp and vs by real constant ones (vp_0 & vs_0). Attenuation is implemented by GMB-EK rheology presented in (4) and thoroughfully explained in (3). In order to make a proper comparison with numerical data it is recommended to either use the same rheology in both the numerical and the analytical. It is also possible to get an almost constant Q value by increasing a lot the number of mechanisms used in both the numerical and the analytical solutions, thus minimizing the effects of the Q fitting in the comparison.)

三相潮流计算，使用的是牛顿拉弗逊方法。迭代较快。是解决潮流的较有效的方法。(Three-phase power flow calculation, using Newton' s method Laffer Johnson. Iterate rapidly. The trend is to solve the more effective method.)

根据张北气象数据，算得当地大型光伏发电系统的输出功率已经镜面温度(According to Zhangbei meteorological data, the mirror temperature of output power of local large-scale photovoltaic power generation system is calculated.)

说明：  用混合同余法生成两组伪随机数，利用投针试验求圆周率。软件：matlab。(Two groups of pseudo-random numbers are generated by the method of mixed congruence, and the circularity is calculated by the test of inserting needle. Software: MATLAB.)

CT迭代重建算法中3维投影矩阵的生成算法，该算法对学习计算机断层层析成像很有帮助。(CT image reconstruction projection ,3D)