td3

Code for doing FDTD solutions.

本文基于毕肖普法和蒙特卡洛法,利用MATLAB编程软件计算了边坡结构的失效概率Pf和对应可靠指标β.在计算上述Pf和对应β时,考虑了土体三个主要基本参数(重度γ、内摩擦角(Ψ)、粘聚力c)的随机特性.利用MATLAB程序的计算结果表明,随机变量对边坡可靠度的影响与基本随机参数对抗滑反力的贡献大小有关,即,贡献大的基本随机参数,它的随机波动对结构失效概率Pf的影响也较大,反之亦然.另外,基于MATLAB的算例计算结果还表明:边坡结构失效概率Pf对内摩擦角(Ψ)较敏感,而对重度y和粘聚力c次之.其次,当同时考虑三个随机变量的联合波动对Pf的影响时发现,当它们在小范围内随机波动时,其联合特性对Pf的影响较敏感,但当它们在大范围内随机波动时,Pf主要受敏感随机变量的影响,而三个随机变量联合作用对Pf的影响和敏感随机变量(Ψ)单独作用时相差不大.由此可见,在实际边坡工程可靠性分析中,土体内摩擦角起主要作用,不容忽视.(Based Bishop method and Monte Carlo method, using MATLAB programming software to calculate the failure probability Pf and the corresponding slope reliability index β structure in the calculation of the above Pf and the corresponding β, consider the three main basic soil parameters (severe γ internal friction angle (Ψ), cohesion c) of the random nature of calculation results using MATLAB program shows that the influence of random variables on the reliability of the basic random slope parameters against anti- slip contribution to the size of the force , that is , the contribution the basic parameters of large random , random fluctuations which affect the probability of structural failure Pf is also larger , and vice versa addition, the calculation based on MATLAB numerical results also show that : the structure of slope failure probability Pf internal friction angle (Ψ) more sensitive , while severe and cohesion c y followed . Secondly, when taking into account the impact of the joint fl)

说明：  gmsk调制解调的实现，matlab仿真(gmsk modem implementation, matlab simulation)

使用Matlab的m语言编写的SVPWM三电平仿真程序，在simulink环境下运行(M using the Matlab language of three-level SVPWM simulation program, run in the simulink environment)

灰色预测代码用于根据现有数据来预测未来一段时间的数据(Grey prediction according to existing code is used to data to predict the future a period of data)

克里金插值法，可用于大数据的空间插值，可信度高(Kriging interpolation method can be used for spatial interpolation big data, high reliability)

隐马尔科夫模型，matalb实现，比较好的(Hidden Markov Model, matalb achieved relatively good)

说明：  高质量程序设计指南，主要讲解编程中一些规范(High-quality programming guide, mainly to explain some of the programming specifications)

分段函数，进行采样，画出采样图，幅频图，频谱图(Piecewise function, sampling draw sample Figure Figure amplitude-frequency spectrogram)

Face Recognition using PCA