革螨种多度分布用对数正态分布模型拟合。
A lognormal distribution model was used to fit the mite species abundance.
结果表明,种多度关系符合对数正态分布模型。
The results show that the curve of the moth species-abundance was in accordance with the log-normal hypothesis.
同时从统计分析中可知,对数正态分布模型更适合于弯沉指标。
In the statistical analyses, the result shows that the lognormal distribution model is more suitable for the index of deflection.
并提出了洪水洪量的对数正态分布模型来表征年最大洪量分布中历时的尺度影响。
And a scaling lognormal model of flood volume is introduced to represent the affection of temporal scale of duration in annual maximum flood volume distributions.
通过对生成结果的分析比较,初步论证了文中所推导的显式三参数对数正态分布模型的有效性。
By analyzing and comparing the calculated results, the effectiveness about the model of the 3-parameter lognormal distribution is demonstrated.
由于威布尔分布或对数正态分布常用来分析寿命分布问题,故优先考虑这两种模型。
Weibull distribution or lognormal distribution is often used to analyze lifetime problem, so the two models are preferentially considered in tis paper.
我们研究股票市场价格时,通常认为股票价格模型服从布朗运动,即对数收益率是正态分布的。
When we study stock market, we usually think that the model of stock price obeys Brownian movement, which log-return characterize normal distribution.
这样,知道模型的渗透率对数正态分布概率50%处渗透率和变异系数,就可以建立起确切的渗透率平面模型。
Thus, when the permeability of 50% probability and the coefficient of variation for lognormal distribution are known, one can establish a definite numerical model of permeability plane distribution.
客流模拟模型以对数正态分布为基础,根据列车旅客发送量来模拟旅客到达车站的时间分布。
Based on the logarithm normal school and the Numbers of passengers carried by train, the passenger flow simulation model simulates the distribution of the passengers' arrival time.
在因子范围服从对数正态分布下,应用线性回归技术和极大似然法建立了模型参数的测定方法。
Parameters of the model are measured by a linear regression technique and a maximum likelihood method.
数值结果表明,红外LED 的寿命服从对数正态分布,其加速模型符合逆幂定律。
The numerical results show that the infrared LED life is characterized by lognormal distribution, and the accelerated model meets the inverse power law.
基于概率解释算法的原理,提出了一种考虑工艺波动的RLC互连延时统计模型,该模型使用了对数正态分布函数。
Based on the theory of the probability interpretation algorithm, a statistical model of RLC interconnect delay in the presence of process variations was put forward.
基于概率解释算法的原理,提出了一种考虑工艺波动的RLC互连延时统计模型,该模型使用了对数正态分布函数。
Based on the theory of the probability interpretation algorithm, a statistical model of RLC interconnect delay in the presence of process variations was put forward.
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