FFTfenxixiangweicha

程序设计的一些基本算法 及其应用 有很高的应用价值(Some basic programming algorithm and its application has a high value)

说明：  Do you need to gain confidence with handling numbers and formulae? Do you want a clear, step-by-step guide to the key concepts and principles of statistics? Nearly all aspects of our lives can be subject to statistical analysis. Statistics: An Introduction shows you how to interpret, analyze and present figures. Assuming minimal knowledge of maths and using examples from a wide variety of everyday contexts, this book makes often complex concepts and techniques easy to get to grips with. This new edition has been fully updated. Whether you want to understand the statistics that you are bombarded with every day or are a student or professional coming to statistics from a wide range of disciplines, Statistics: An Introduction covers it all.

对于交错网格上的WCNS格式进行精度测试（不带时间方向推进，仅测试空间精度）(test the order of accuracy of the WCNS scheme)

三次样条曲线拟合代码，先训练，后差值，计算非常准确(Three times spline curve fitting, the first training, and after, computation is very accurate)

模糊控制的C语言实现，双输入单输出，采用查表法进行模糊推理，去模糊方法采用重心法，易于单片机实现(C language realization of fuzzy control, double input and single output, using look-up table method for fuzzy reasoning, using center of gravity method for deblurring, easy to realize by single chip computer)

离散颗粒碰撞程序，包括颗粒的随机生成程序，颗粒搜索程序，颗粒碰撞程序。(Discrete particle collision procedures, including procedures for randomly generated particles, particles search process, particle collision process.)

该文件是用matlab开发的图论分析工具箱， 里面有使用时的详细说明，pdf说明文档。 绝对实用对于图论的研究者(The document was developed with matlab graph theory analysis toolbox, which are used when a detailed explanation, pdf documentation. Absolutely useful for researchers in graph theory)

四分之一圆柱贴体网格的生成，可以调节大小(Fourth cylindrical body-fitted grid generation, you can adjust the size of the)

说明：  借助python3计算偏微分方程组，并作出相应图形，代码简单易懂，方便修改(Calculate partial differential equations)

正入射的自由曲面透镜设计，计算获得透镜的二维坐标(The free-form surface lens is incident on the design, the two-dimensional coordinates of the lens calculated)