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网上下载的一个求取微分方程的程序，大家顶下(Download a program to strike a differential equation, we parietal)

用于数学建模解决最短路径或者类似的优化问题(Mathematical modeling is used to solve the shortest path or similar optimization problems)

一种可以对数据的鲁棒性进行消除的工具箱 可以对数据进行加权(A way to the robustness of the data to eliminate the data can be weighted toolbox)

matlab 解方程组，超定方程组，微分方程组，偏微分(matlab solutions of equations, overdetermined equations, differential equations, partial differential)

The BCJR algorithm is an algorithm for maximum a posteriori decoding of error correcting codes defined on trellises (principally convolutional codes). The algorithm is named after its inventors: Bahl, Cocke, Jelinek and Raviv.[1] This algorithm is critical to modern iteratively-decoded error-correcting codes including turbo codes and low-density parity-check codes.

由一系列三维的点，通过调用函数进行插值，形成更光滑的曲面(By a series of three-dimensional points by calling the function interpolation, a more smooth surface)

关于PID的比例因子调节的文章，非常不错，对各种比例关系进行对比说明。(PID adjustment on the proportion factor of articles, very good, compared to the ratio between the various instructions.)

1. 在matlab中分析基于分离变量法的解析解； 2. 利用简单迭代法求解，与解析法结论对比，分析求解结果的精确度。分析过程至少包括：在网格尺寸为0.1 m和1 m两种条件下，两次迭代差值最大为10-10时的分析结论； 3. 利用超松弛迭代法分析，选择松弛因子，分析其对收敛速度（即迭代次数）的影响，并确定最优值。分析过程至少包括：在网格尺寸为0.1和1两种条件下，两次迭代差值最大为10-10时，迭代次数随松弛因子的变化，得到对应的最优松弛因子，与经验值（课本165页式子3.7.15）进行对比。(1. Analyze the analytical solution based on the separation variable method in matlab. 2. Using a simple iterative method to solve, compared with the results of the analytical method to analyze the accuracy of the solution. The analysis process at least includes the following conclusions: when the mesh size is 0.1m and 1m, the maximum difference between two iterations is 10-10. 3. Analyze using the relaxation relaxation iteration method, select the relaxation factor, analyze its influence on the convergence speed (ie the number of iterations), and determine the optimal value. The analysis process at least includes the following: when the mesh size is 0.1 and 1 and the maximum difference between two iterations is 10-10, the number of iterations varies with the relaxation factor, and the corresponding optimal relaxation factor and empirical value are obtained ( Textbook 165 pages (3.7.15) for comparison.)

使用改进后的全变分算法对地震振幅切片进行处理，可以提高地震剖面的分辨率，增加信噪比。(Using the improved algorithm, total variation for processing seismic amplitude slices, can improve the resolution of seismic profiles, increased signal to noise ratio.)

计算sigma-delta调制器输出码流的信噪比。(calculate the ratio of signal to noise of sigma-delta modulator.)