Keypad with pic16f877a

说明：  关于信息光学里面的内容，包括菲涅尔衍射积分，成像等(About the contents of information optics, including Fresnel diffraction integration, imaging, etc.)

自己编写的一个vc的五子棋 希望对爱好vc编程的朋友有所帮助 也请高手多指教-themselves prepared a 331 vc hope that the right-loving friends vc programming also help enlighten more 19:56

说明：  适用于STM32F401的远程IAP模式下载程序方法，其中包含iap程序。(The method of downloading program in remote IAP mode for stm32f401, including IAP program.)

汽车仪表风格的Flash加载动画特效，很有意思，也很有个性的Flash Loading，随着Flash短片的加载，仪表盘上的仪表针的由左向右摇摆，指针到达最右侧，表明Flash影片已经加载完成了，如示例截图所示的效果，很炫的感觉，含有Flash源文件。

一个贪食蛇的小游戏，可以一个人或者两个人玩-a small game can be a person or two people play

使用wpf写的 图片局部放大功能 图片局部放大功能(Wpf-Written Picture Local Enlargement Function Picture Local Enlargement Function)

这个程序可以计算给定点处的小区信号范围覆盖。-is program computes a map of visibility from a selected point on a topography. It has been written to help the search for radio relay best location. Because it considers only direct line of sight, it gives a good estimation for possible radio link for short distances only (less than 10 km), neglecting curvature of the Earth, Fresnel zone and atmospheric refraction on radio waves propagation. The program computes the relative elevation angle of the mask for each point (the angle is null or negative if the point is visible). The function needs a digital elevation model Z and associated (X,Y) vectors or matrices of coordinates (same unit as Z), position of the point (X0,Y0), the antenna height H0 (for instance 4 m), and the hypothetic antenna height Ha on each topography points (for instance 3 m). When no output argument is given, the function plots a map of the results (color map of mask angles, and blank for visible points, see example screenshot). The s

说明：  语音识别系统运用vad技术进行识别，可以更好地进行语音识别(Recognition of speech recognition system using VAD Technology)

限制使用次数软件的制作关于限次软件的制作-Restrictions on the Use of the number of software production limited time on the production of software

说明：  本文针对基于高斯分布的非线性滤波问题，开发并分析了实时和精确滤波器。我们提出了高斯滤波器的系统公式，并开发了高效和精确的数值积分。我们还讨论了混合高斯滤波器，其中条件概率密度由高斯分布之和近似。数值试验表明，新的滤波器在不增加额外费用的情况下显著地改善了扩展卡尔曼滤波器，并且新的高斯和滤波器具有接近最优的性能(In this paper we develop and analyze real-time and ac- curate filters for nonlinear filtering problems based on the Gaussian distributions. We present the systematic formulation of Gaussian filters and develop efficient and accurate numerical integration of the proposed filter. We also discuss the mixed Gaussian filters in which the conditional probability density is approximated by the sum of Gaussian distributions. Our numerical testings demonstrate that new filters significantly improve the extended Kalman filter with no additional cost and the new Gaussian sum filter .has a nearly optimal perfor- mance.)