J2000_2_WGS84_matrix

求解二阶变系数常微分方程,主要用于涡激振动中频率响应的计算(Solving second-order ordinary differential equations with variable coefficients)

基因的FFT变换，可以快速得出外显子的位置(Transform FFT of the gene can be quickly drawn to the location of exon)

说明：  通过MATLAB编程模拟理想弹塑性应力应变曲线(Simulating the stress-strain curve for perfect plasticity by MATLAB coding.)

求解二阶变系数常微分方程,主要用于涡激振动中频率响应的计算(Solving second-order ordinary differential equations with variable coefficients)

说明：  利用pid算法控制电机转速，转速可调，数码管显示，初学者实用(Using PID algorithm to control motor speed, adjustable speed, digital display, beginners practical)

fluent软件UDF，用于焊接过程模拟，是高斯分布的面热源。(weld heart source)

适用于ABAQUS的自定义材料子程序，适用于Johnson-Cook材料模型(Apply to custom material ABAQUS subroutine for Johnson-Cook material model)

进行了简支梁荷载作用下的变形计算，将梁分成了40个单元，分别用Euler Bernoulli和Timoshenko 梁进行了对比计算(Was calculated deformation under loads simply supported beam, the beam is divided into 40 units, respectively Euler Bernoulli and Timoshenko beam compared calculated)

采用Verilog语言，实现db8小波分解(Realizing wavelet decomposition)

实测电压和电流的有效值及各次谐波的提取方法(The effective value of measured voltage and current and the method of extracting harmonics.)