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随机调制信号下的模拟ppm，连续相位调制信号(CPM)产生，供做算法研究人员参考。( Random ppm modulated analog signal under Continuous phase modulation signal (CPM) to produce, Algorithm for researchers to do reference.)

1、 写出此两点边值问题的积分形式； 2、 构造有限元方程； 3、 编程计算显示计算结果。(1, write the two-point boundary value of the integral form 2, structural finite element equation 3, programming calculations show the results.)

地理数据拟合，用于GNSS高程拟合，内附示例(Geographic data fitting, used in GNSS elevation fitting, enclose the sample )

说明：  复合材料层内基于断裂韧性退化的VUMAT子程序(VUMAT subroutine based on fracture toughness degradation in composite laminates)

Fitting curve distribution function拟合曲线分布函数(Fitting curve distribution function)

Evesen开发的洛伦兹模型耦合集合卡尔曼滤波算法(Lorenz model coupled with ensembled Kalman Filter)

间断有限元方法（ Runge–Kutta discontinuous Galerkin ）求解N-S方程 算例为一维sod问题 流通量为BR1(Discontinuous Finite Element Method (Runge-Kutta discontinuous Galerkin) N-S equation solving a one-dimensional example problem sod Liquidity is BR1)

该损伤模型通过 商用有限元软件ABAQUS /Explicit 的用户子程序VUMAT 实现，并使用该模型对碳纤维增强环氧树脂 复合材料层合板在横向低速冲击作用下的损伤和变形行为进行预测分析． 数值仿真的结果与试验结 果进行了比较，吻合良好，验证了该模型的有效性．(Through coding user subroutine VUMAT of finite element software ABAQUS /explicit， and applied the model to an example，carbon fiber reinforced epoxy composite laminates under low velocity impact，the prediction for damage and deformation were good agreement with the experimental results．)

分享一个外国人编写的FDTD程序,可以用来计算微带线和微带贴片天线,程序中采用的是均匀网格划分,但也可以在容易地在它基础上改写成非均匀网格.其边界条件与Sheen的程序不同,这里采用二阶技术.(Prepared to share a foreigner FDTD procedures, can be used to calculate the microstrip lines and microstrip patch antenna, the procedure used is uniform mesh, but can also easily rewrite it into the basis of non-uniform grid. its boundary conditions with different processes and Sheen, where second-order technology.)

Echo cancellation using NLMS adaptive filter