极值分布

Flood frequency analysis ; Extreme Value distribution ; Pearson TypeⅢdistribution ; three-parameter lognormal distribution ; Microsoft Excel software

洪水频率分析；极值分布；皮尔逊Ⅲ型分布；三参数对数正态分布；电子表格

Then the best linear unbiased estimate method for interval data of normal distribution, Weibull distribution, extreme value distribution or other location-scale parameter models is presented. The presented method has higher precision, and solves the problem of reliability assessment with small sample of storage life.

在此基础上，提出一种区间数据最佳线性无偏估计方法，并对正态分布、极值分布、Weibull分布等常用的位置一尺度分布进行讨论，该方法能够对产品贮存寿命进行小样本预测和可靠性评定。

Taking WindowsXP,Microsoft EXCEL and VBA as tools,a series of software system on hydrologic frequency analysis which integrated the ability of graph and calculation was developed.And it contained four kinds of frequency distributions:Γ-distribution,extreme value distribution,normal distribution and logarithmic normal distribution.

以Windows XP，Microsoft EXCEL和VBA为开发环境，研制了一套集绘图与计算于一体的水文频率分析软件，其中包含了常用的Γ分布、极值分布、正态分布和对数正态分布4种频率分布线型。

The main findings include:(1) the time series of sample returns are not normative;(2) the sample returns follow a Frechet extreme value distribution;(3) The EVT approach provides a more accurate static margin level while the EWMA approach is more suitable for setting dynamic margin level.

主要发现有：（1）样本收益率时间序列不符合正态性假设；（2）样本收益率时间序列服从 Frechet 极值分布；（3）我国国债期货保证金的静态设定应当采用 EVT 理论，动态设定应当采用 EWMA 方法。

I think people in this lifetime in a rebirth.

我觉得人在这一生里其实也在轮回。

He had to tie her hands together.

他不得不把她的双手绑在一起。