| 1. | Normalization of logarithmic normal distribution through mapping transformation
用映射变换将对数正态分布正态化 |
| 2. | When the data is not in normal or logarithmic normal distribution , the least - squared method is not applicable to obtaining the sensitive index
若试验数据为非正态或非对数正态分布，最小二乘法求优会受到限制。 |
| 3. | The pearson distribution and the logarithmic normal distribution are used respectively to fit the asymptotic distributions of yearly maximum of the daily precipitation in chengdu during the period between 1951 and 1999
摘要利用1951 ~ 1999年成都日降水量年极大值的记录，通过统计推断，找出了成都日降水量年极大值遵循的渐近分布。 |
| 4. | 4 ) the number and mass concentration distributions of the background atmospheric sand particles of ymchuan , bayanhot and tonggunur display a unimodal form , obeying a logarithmic normal distribution , greatly differing f
黄沙的长距离输送和小雨是泥雨形成的原因。云物理和降水与来自沙尘粒子混合，尤其是小于zpm的粒子，导致了华北地区泥雨的发生。 |
| 5. | Abstract : this paper briefly introduces the method of testing the real sensitivity for eed and gives the data processing method in terms of the electrostatic critical ignition energy of conductive - powder eed conforming to logarithmic normal distribution
文摘:简要介绍了电火工品真实静电感度的测试方法,以导电药式电火工品静电临界点火能量服从对数正态分布为基础,给出了对应的数据处理方法。 |
| 6. | By means of statistical inference as well as hypothesis test method , it is determined that the variables of compressive stress and shearing stress are of extreme - value distribution and that the variables of frictional coefficient and cohesion coefficient are of logarithmic normal distribution
应用统计推理和假设检验方法分析得知，压应力与切应力随机变量呈极值型分布，摩擦系数与粘结力系数随机变量呈对数正态分布。 |
| 7. | It has been found that the depth of crack and fracture toughness of material can be expressed by weibull distribution , ratio of depth to length of crack and strength of material can be expressed by logarithmic normal distribution and normal distribution respectively
对该管道主要随机变量的统计分析表明，裂纹深度和材料的断裂韧性表现为威布尔分布，裂纹深长比表现为对数正态分布，材料的屈服强度和拉伸强度表现为正态分布。 |
| 8. | 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。 |
