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交错网格时间二阶空间十二阶声波方程数值模拟，加PML吸收边界，倾斜地层(Staggered grid space second-order time 12 order acoustic equation numerical simulation of the PML absorbing boundary, tilted strata)

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IBMde股票图形示例，，含数据有布林线，平均移动线 (IBMde stock graphic example, with data Bollinger Bands, Moving Average Line)

加对地支路、非标准变比、稀疏矩阵的潮流计算(Power flow calculation)

说明：  改进欧拉法的matlab程序，并且其中有一个例子(Improved Euler method matlab program, and an example)

matlab与CC++混合编程程序，可以参考下，适合初学者(matlab and C C++ mixed programming program, you can refer to, for beginners)

使用C语言写的捷联惯导解算程序，四子样旋转矢量(Using C language to write the strapdown inertial navigation program, four sample rotation vector)

CHOLMOD: a sparse Cholesky factorization package

Grey prediction matlab program code灰色预测matlab程序(Grey prediction matlab program code)

先进PID控制及其MATLAB仿真(刘金锟)(Advanced PID control and MATLAB simulation (Liu Jinkun))