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说明：  To record alumni contact information

NSEG是美国兰利研究中心推出的飞行器起飞、爬升、巡航、加速、下降、减速和着陆等各个过程分析软件。(NSEG was developed to perform rapid aircraft mission analyses. It is based upon the use of approximate equations of motion whose form varies with the type of flight segment. Flight segments considered are takeoff, accelerations, climbs, cruises, descents, decelerations, and landings. Layered atmosphere options are available. The program can also be used for flight envelope mapping. NSEG provides the capability to analyze aircraft missions from low to hypersonic speeds. Realistic and detailed vehicle characteristics are input to NSEG to permit accurate mission analysis. NSEG allows engine scaling so as to fit the design under analysis. NSEG contains several approximate flight path optimization capabilities based on Rutowski energy-like criteria for considering minimum time or fuel flight segments and maximum range segments during climb or descent. Takeoff and landing analysis is based on the Air Force Flight Dynamics Laboratory DATCOM method of high lift aerodynamic modelling)

Delphi+Access进销存系统设计模板（源码），是用DELPHI7+Access做的一个小程式，功能有系统资料管理、采购管理、订单、库存、成品入库、销售出库、库存明细、采购正式等，其中BUG不少！以后有机会会慢慢完善！超级用户：dspace 密码：dspace。

新学Python的练手程序,写的是通讯录,不过是命令行的,没有采用图形.对于新人很有帮助-Contact System Python Version

大斜视角的SAR成像 RD快速算法，解决了斜视角比较大的情况(SAR imaging with RD algorithm)

HTU20D测试代码，只要接上HTU20D传感器，编译下载就能得出温湿度的数值(HTU20D test code.As long as the HTU20D sensor is connected, the value of temperature and humidity can be obtained by compiling and downloading. .)

calender using c language source code

说明：  基于retinex理论，利用双边滤波器对低照度彩色图像进行增强(Based on Retinex theory, low illumination color image enhancement using bilateral filters)

几个高级的Delphi编程实例，像是一本书的源码，这些例子有抓图、注册表工具、文件管理、热键、声音控制等，对初学者学习Delphi有参考价值。

利用matlab的gui设计的带有输入和输出功能的界面图形，实现等距线可视性很强，自己独立编写的数据和图形，学习非常值得(Using GUI of MATLAB to design interface graphics with input and output functions, realizing the visibility of isometric line is very strong, the data and graphics written independently by oneself are very worthwhile to learn.)