Python 获取沪深300日行情数据并存入Excel文件

说明：  PFLD的python实现，用于人脸的关键点检测(Python implementation of PFLD for key point detection of human face)

包含了雷达目标S机动及迎头转尾后的2维平面数学模型仿真，可得到距离速度解析解。(Contains the S movement and forward to backward movement model.The 2 dimensional simulation of frontal plane can be obtained from the mathematical model. Analytical solutions of velocity and distance is also obtained.)

说明：  计算gammafunction通过Lanczos approximation(calculate gamma function through Lanczos approximation)

系统基于 .NET 框架开发，使用前请确认电脑里是否已安装 .NET 框架组件及数据访问组件。-based system.NET Framework development, Please confirm before use computer has been installed.NET framework components and data access components.

说明：  stm3210x Lan8720 驱动及demo程序(STm3210x Lan8720 Driver and Demo Program)

#include < stdio.h > 作废 main () { printf ("你好世界"); }

RS码和BCH码译码的MATLAB源文件，可以作为C代码的参考-RS code and BCH Decoding the MATLAB source file can be used as the reference C code

底层json类库，个人认为非常好用。分享下。(The underlying JSON class library, which I personally think is very useful. Share it.)

说明：  One-Stage算法不需要Region Proposals阶段，可以直接产生物体的类别概率和位置坐标值，经过单次检测即可直接得到最终的检测结果。(The one stage algorithm does not need the region proposals stage, and can directly generate the category probability and position coordinate value of the object. After a single detection, the final detection result can be obtained directly.)

欧拉前差公式通用程序 欧拉前差公式的算法，精度不是很高，误差相对比较大- In front of Euler in front of difference formula general routine Euler the difference formula algorithm, the precision is not very high, the error relative quite is big