u_duanlu

说明：  机器学习的鸢尾花数据集的应用逻辑回归算法分类(Classification of iris data set by logical regression algorithm)

用于求解一维气体动力学的欧拉方程代码，采用戈东诺夫格式，显式推进，可仿真非定常激波管(For solving one-dimensional Euler equations of gas dynamics code, using Godunov format, explicit advance, can simulate unsteady shock tube)

《数值分析方法库 》本书选材内容丰富，包括了当代科学计算过程中涉及的大量内容：求特殊函数值、随机数、排序、最优化、快速傅里叶变换、谱分析、小波变换、统计描述和数据建模、偏微分议程数值解、若乾编码算法和任意精度计算等。本书科学性和实用性统一，不仅对每种算法进行了数学分析和比较，而且根据作者经验对算法给出了评论和建议，并在此基础上提供了用C++语言编写的实用程序。(《Numerical Recipes in C: The Art of Scientific Computing》, The product of a unique collaboration among four leading scientists in academic research and industry, Numerical Recipes is a complete text and reference book on scientific computing. In a self-contained manner it proceeds from mathematical and theoretical considerations to actual practical computer routines. With over 100 new routines bringing the total to well over 300, plus upgraded versions of the original routines, the new edition remains the most practical, comprehensive handbook of scientific computing available today.)

矩量法的fortran程序，忘了那本书的源码了(Method of Moments fortran program, forgot the source of the book)

说明：  瑞利分布的随机变量，标准高斯分布的随机变量，莱斯分布的随机变量(Random Variables of Rayleigh Distribution, Standard Gauss Distribution and Rice Distribution)

计算日期时间，可以显示不同颜色，主要用以计算上班日期，换班日期，十分方便。(Daliy Calc)

压缩存储下用“追赶法”求解三对角方程组的C语言描述(Compression and storage use the " catch up method" for solving tridiagonal equations of C language description)

工程领域，PR方程代码.用于计算混合工质性质。(PR equation code)

用流体计算李指数的。是用excel中的vba做的小程序。(calculated the lyapunov exponent)

计算电磁学有限元法全美经典教材，金建铭编著英文版(FEM computational electromagnetics American classic textbook, Jin Jianming edited English)