查询词典 extreme value problem

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

Thus far, little has been known for the extreme value distribution of general structural dynamic stochastic responses, except for some special results, say, the Rayleigh distribution in the case of narrow - banded Gaussian stochastic processes.

由于基于首次超越破坏准则的结构动力可靠度问题可以转化为相应动力反应极值分布的积分问题，获取结构动力随机反应的极值分布具有重要的意义川。

Highly efficient and stable method of parameter estimation is built. The fitting degree of extensive extreme value distribution and the extremeⅠ,Ⅱ,Ⅲtype distribution was compared, among which the optimal distribution type are researched.

针对极大似然法参数估计的失效问题，将逐步迭代法推广应用于广义极值分布，建立了参数估计的高效稳定算法，并比较广义极值分布与极值Ⅰ、Ⅱ、Ⅲ型分布的拟合度，研究平均风速的最优分布类型。

For more general cases, the Rice formula based level - crossing process theory was generally used trying to capture the extreme value distribution.

然而，迄今为止，仅对于某些特殊的随机过程获得了一些有意义的典型结果，例如窄带正态随机过程的极值分布服从Rayleigh分布川。

The non-stationary index of automobiles\' supporting force response under side wind is analyzed, which confirms the reasonableness of stationary assumption in dynamic reliability analysis.Thirdly, joint distribution of wind speed and wind direction is established based on the extensive extreme value distribution, which is used for reliability analysis of bridge traffic safety.

其次提供了Fourier变换识别抖振响应频谱失真的实例，采用Hilbert-Huang变换分析桥梁抖振响应的时频特性，从结构动力学角度探讨了响应非平稳性的原因，从风工程的角度探讨HHT变换分量的物理意义，并分析侧风作用下桥上汽车支撑力响应的非平稳指标，为动力可靠度分析中平稳性假定的合理性提供必要的论证。

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。

Thus, 8 groups of reliability indexes are derived which are thereliability indexes of primary and adjunctive combination under normal and intensivecar operation status when mobile load effect belongs to extreme value typeⅠdistribution and normal distribution respectively.

其中，分别考虑了荷载的基本组合和附加组合，汽车荷载服从正态分布和极值Ⅰ型分布，汽车运行一般运行状态和密集运行状态，然后经过综合比较分析得出了钢桥常用的两种钢材在强度极限状态下的目标可靠指标建议值。

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。

The results reported here show that （1）The aligned score is a good similarity measure in analysis of the protein.（2）Aligned score is following the generalized extreme value distribution with parameters μ=94.769 7,σ=41.583 7,ξ=0.192 5.（3）Compared with other algorithm of structure alignment,the algorithm performs better than CTSS.

主要结果有：利用动态时间规整算法计算得出的结构距离是一个很好的蛋白质结构相似性度量；结构距离服从参数为μ=94.769 7，σ=41.583 7，ξ=0.192 5的广义的极值分布；和其他结构比对算法相比，该算法比CTSS的搜索结果要好。

The paper first scrutinizes the basic principles, advantages and disadvantages of three representative advanced measurement approaches, which are Internal Measurement Approach, Scorecard Approach, Extreme Value Theory and Loss Distribution Approach. Furthermore, the paper expounds how Deutsche Bank uses LDA to estimate Capital at Risk to cover the operational risks.

本文首先详细评析了高级计量法体系中具有代表性的内部衡量法、计分卡法、极值原理法和损失分布法的基本原理及各自优缺点，进而以德意志银行为例阐释了如何利用损失分布法进行操作风险经济资本计量。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"