Equality condition of retaining the independence of normal random variables under linear transformation 正态随机向量线性变换独立不变性的充要条件
In enforcement plan , the beam and protect plate , and random resistance are analyzed , in which the normal random variable and maximum stress element as evaluation standard are considered 研究了炉墙的改造,梁和护板的改造、腐蚀严重的部位的加固方案,分析了梁、柱改造方案的随机抗力。
Based on the approach of turning some of the relevant extreme - value - type and logarithmic normal distribution variables into independent and normal random variables , the shear - slipping failure probability of a high arch dam is worked out to be of the order of magnitude of 10 ^ ( - 5 ) by means of second - order moment method 在将部分相关的极值型与对数正态分布随机变量转换为独立、正态随机变量的基础上,利用二阶矩法计算得到某高拱坝的剪滑失效概率为10 ^ ( - 5 )量级。
Time domain noise is simulated by the mathematical pseudo uniform or normal random variable and coupled to deterministic signals such as rectangular ( rect ) , triangular ( tria ) , unit step exponential ( uexp ) , even exponential ( eexp ) , or gaussian ( gauss ) pulse voltages in finite number of time samples in finite time period 用数学类真均匀或常态随机变数模拟时域杂讯,与定然时域讯号如,方形、三角、指数递减、或高斯等电压脉波在有限时域?围之有限个时域取样结合。