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稀疏矩阵(SparseMatrix)：是矩阵中的一种特殊情况，其非零元素的个数远小于零元素的个数。 设m行n列的矩阵含t个非零元素.以二维数组表示高阶的稀疏矩阵时，会产生零值元素占的空间很大且进行了很多和零值的运算的问题。

一个非常好的时间序列工具箱，详细使用说明见P. M. T. Broersen, Automatic Spectral Analysis with Time Series Models, IEEE Transactions on Instrumentation and Measurement, Vol. 51, No. 2, April 2002, pp. 211-216.

设信号 ，用 对x(t)采样得x(n)，是否会发生频谱混叠？现利用FFT分析其频谱。 1．编程绘制该信号的波形。 2．若令N=16，编程对x(n)做FFT运算，并绘制其幅频特性曲线。 3．令N=1024，编程对x(n)做FFT运算，并绘制其幅频特性曲线。 4．分析2、3的运算结果。 设计调试报告要求： 1．工作原理简述； 2．设计思路； 3．难 ...

/* * EULER S ALGORITHM 5.1 * * TO APPROXIMATE THE SOLUTION OF THE INITIAL VALUE PROBLEM: * Y = F(T,Y), A<=T<=B, Y(A) = ALPHA, * AT N+1 EQUALLY SPACED POINTS IN THE INTERVAL [A,B]. * * INPUT: ENDPOINTS A,B INITIAL CONDITION ALPHA INTEGER N. * * OUTPUT: APPROXIMATION W TO Y AT THE (N+1) VALUES OF T. * ...

R+树的c实现源码，对应文章T. K. Sellis, N. Roussopoulos, C. Faloutsos: The R+-Tree: A Dynamic Index for Multi-Dimensional Objects.

MySQL中文参考手册.rar MySQL是一个精巧的SQL数据库管理系统，虽然它不是开放源代码的产品，但在某些情况下你可以自由使用。由于它的强大功能、灵活性、丰富的应用编程接口（API）以及精巧的系统结构，受到了广大自由软件爱好者甚至是商业软件用户的青睐，特别是与Apache和PHP/PERL结合，为建立基于数据库的动态网站提供了 ...

This is a little console mode utility program which is able to (de-)compress single files with a static Arithmetic compression algorithm. You could easily add the RLE/BWT/MFT data transformation algorithms. Just rip the corresponding classes out of my HuffComp source code. I won t add these ones ...

AT_T汇编语言格式,内容非常详细，当作一边比较好的AT&T汇编参考手册使用啊。

When created, this DLL does not export any symbols. As a result, it will not produce a .lib file when it is built. If you wish this project to be a project dependency of some other project, you will either need to add code to export some symbols from the DLL so that an export library will be ...

With a worldwide community of users and more than a million dedicated programmers, Perl has proven to be the most effective language for the latest trends in computing and business. Every programmer must keep up with the latest tools and techniques. This updated version of Advanced Perl Programmin ...