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Matlab计算生成双脊波导截止频率的源程序(Matlab calculation to generate double-ridged waveguide cut-off frequency of the source)

多目标粒子群优化算法，利用粒子群算法原理编写优化两个目标函数。(Multi-objective particle swarm optimization algorithms, particle swarm optimization principle to write to optimize the two objective functions.)

二维粘弹性介质中波的传播的解析形式。应用Carcione等在1988年发表的《WAVE PROPAGATION SIMULATION IN A LINEAR VISCOELASTIC MEDIUM》一文中的方法，更加详细的介绍见英文描述。该代码对于做波场模拟的同学有很好的参考价值。( MATLABScript for obtaning the analytical solution for 2D wave propagation in a viscoelastic medium, based on the Appendix B of paper of Carcione et al. (1988)(1), corrected in (2). The source used is a Ricker wavelet in the y velocity component. A figure of the source temporal function and its inverse Fourier transform are provided to verify the good working of the method. Also works for elastic variables by substituting the values of vp and vs by real constant ones (vp_0 & vs_0). Attenuation is implemented by GMB-EK rheology presented in (4) and thoroughfully explained in (3). In order to make a proper comparison with numerical data it is recommended to either use the same rheology in both the numerical and the analytical. It is also possible to get an almost constant Q value by increasing a lot the number of mechanisms used in both the numerical and the analytical solutions, thus minimizing the effects of the Q fitting in the comparison.)

This is a Stack Class with Funtions Push,Pop, check Stack is Full or Empty Application: Change a number from Decimal to Binary

用来计算流体力学中非常典型的不可压缩方腔流动。包含MATLAB程序绘制流函数图。(It is used to calculate the incompressible flow of a typical square cavity in fluid mechanics. Contains MATLAB programs to draw stream function diagrams.)

包含了悉尼科技大学徐亦达老师的课程课件，有贝叶斯理论、EM算法、卡尔曼滤波、HMM、粒子滤波、概率论相关知识等(The file includes knowledge about EM, HMM, particle filter, kalman filter and so on.)

这是非均匀B样条曲线构造方法代码，如果有问题可以邮件联系：wuxiaod1987@163.com(NUBUS Spline Build)

说明：  基于mises屈服准则的随动强化模型的umat子程序(Follow up reinforcement UMAT)

一圆形游泳池如图所示，现在需在其周围建一圆形过道，并在其四周围上栅栏。 栅栏价格为35元/米，过道造价为20元/平方米。 过道宽度为3米， 游泳池半径由键盘输入。 要求编程计算并输出过道和栅栏的造价。(A circular pool as shown in figure, now in its built around to a circular corridor, and in its 4 around on the fence. The fence for 35 yuan/m price, corridor cost for 20 yuan/square metre. Aisle width is 3 meters, The radius of the swimming pool by keyboard input. Demand and output programming calculation of corridor and the cost of the fence. )

电磁场的时域有限元仿真,用于学习电磁场的时域计算。(Time domain electromagnetic finite element simulation for learning time-domain electromagnetic field calculation.)