boundary_switch

说明：  计算FDTD远场分析脚本，根据近场数据直接计算出远场分布(The far field analysis script of FDTD is calculated, and the far field distribution is calculated directly from the near field data.)

利用VORONOI算法在PYTHON中的多晶材料建模(Modeling of Polycrystalline Materials in PYTHON Using VORONOI Algorithms)

说明：  lm求解非线性方程组(Solving nonlinear equations by LM)

用于ABAQUS软件的子程序，可对金属材料的韧性断裂行为进行精确的计算，并预测其断裂行为。(The subroutine for ABAQUS software can be used to calculate the ductile fracture behavior of metal materials accurately and predict the fracture behavior.)

新的屈服准则ABAQUS子程序UMAT，含有多种较新的准侧，能很好运用(The new yield criterion ABAQUS subroutine UMAT contains a variety of newer standards and can be used very well.)

说明：  关于极限学习机的回归拟合，还有分类的实例程序(On the regression fitting of the limit learning machine and the example program of classification)

very helpful for those who have initiated research

粒子群算法的仿真程序，并采用典型benchmark进行演示分析； 然后，应用粒子群算法进行热工过程水轮机系统模型辨识，matlab软件可直接运行； 采用粒子群算法与PID参数整定进行联合仿真，用以提高PID控制器对热工过程水轮机的控制性能。(Particle swarm algorithm simulation program, and the use of a typical benchmark for demonstration analysis; Then, the particle swarm optimization algorithm is used to identify the turbine system model of the thermal process. The matlab software can be run directly. Particle swarm algorithm and PID parameter tuning are used to simulate the PID controller to improve the control performance of the hydraulic turbine.)

说明：  新的屈服准则ABAQUS子程序UMAT，含有多种较新的准侧，能很好运用(The new yield criterion ABAQUS subroutine UMAT contains a variety of newer standards and can be used very well.)

根据给定的实验系统的参数，对采用诱骗态方案的BB84系统进行仿真，得到在不同光纤传输距离下，系统安全密钥生成率R(According to the parameters of the experimental system, the BB84 system with decoy scheme is simulated, and the system security key generation rate R is obtained under different fiber transmission distance)