fftshift

说明：  针对小流域设计洪水计算中，采用推理公式求解洪峰流量Qm及汇流时间τ的方法繁琐，查算精度较低等问题，提出用牛顿迭代法求解，该方法较原图解试算法收敛快，迭代次数少，计算速度快，精度可靠。计算实例表明，用简单迭代法与牛顿迭代法计算设计洪峰流量，其结果与图解试算法完全一致。()

最大类间方差法的VC++和matlab源程序，还包括其原理介绍的doc文档(Otsu method of VC++ and matlab source, but also introduced the principle document doc)

直接扩频捕获Xfast算法仿真(包含可调SNR信息码产生)(dsss acquisition(XFAST))

在bate1版的基础上： 增加了关闭某条便笺时，记忆某条便笺的位置和大小的功能。 跟随窗体的按钮不再会溢出 改变了帮助文本的样式 在帮助中添加了作者信息 便笺的默认储存位置从原来的 D:\_NOTE_TEMP 更改为了 现在的 D:Program Filesakai_note 优化了使用过程中的说明与提示 临时文件单独存放与临时文件夹 解决了退出编辑状态时，部分时候文本不能换行显示的问题 akai 2011 from PHY. of CCNU 2013-2-22 ========================================= 在bate2版的基础上： 产品名由原来的 akai_note 改为 ackeline_note 便笺的默认储存位置从原来的 D:Program Filesakai_note 改为：D:Program Filesackeline_note 增加了便笺可以更改颜色的功能，六种颜色随心选！ akai 2011 from PHY. of CCNU 2013-2-22 =========================================(In the version on the basis of bate1: Increased when closing a bar notes, location and size of the function of memory in a memo. Follow the form of the button will no longer overflow Change the help text styles With the help of information added to The default storage location notes from the original D: _ NOTE_TEMP change order Now the D: Program Files akai_note Optimize the use of the process instructions and tips Separate storage of temporary files and temporary files folder Solve the exit edit state, some time can not wrap text display issues akai 2011 from PHY. of CCNU 2013-2-22 ========================================= Based on the version of the bate2: Product name changed from the original akai_note ackeline_note The default storage location notes from the original D: Program Files akai_note Read: D: Program Fi)

说明：  matlab中对于语音编码的叙述和代码演示(matlab for speech coding in the description and code demo)

串的一些基本运算，删除一段子串，置换，求s串中从start位置开始长度为len的子串等等(Some of the basic string operations, delete a substring, replacement, seeking s string starting from the start position of the sub-string of length len, etc.)

说明：  读写锁： 一个简单的支持多个读，一个写控制源码(Read-write lock: the support of more than a simple read, a write control source)

matlab 建立有限元模型源程序,有限元分析必备程序(FEM using matlab)

通过实际的例子学习simulink中s函数的使用及编写(Learning through practical examples of the use of the simulink s in function and write)

该程序是一个matlab与visual c++ 混合编程的例子，运用matlab的combuilder将matlab程序编译成dll，在C++里调用。(that the procedure was a Matlab c mixed with visual programming examples. using Matlab combuilder procedures will be compiled into Matlab dll, in the C calling.)