- 更多网络例句与极值相关的网络例句 [注:此内容来源于网络,仅供参考]
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Furthermore, the metallic glass samples are prepared by vacuum injection method and the rationality of above-mentioned relationships and RBF models is directly verified. It is shown that there are extremum phenomena between the Rc andΔd ,Δe and v respectively. However, the positions of the extremum are different from different alloy systems and the extremum phenomena may be related to the optimum composition region and the optimum additive quantity. More elements in the alloy are in favor of the improvement of the GFA. And as for the high GFA alloy, the atomic percentage, atomic radius difference and atomic electronegativity difference are harmoniously matched.
d、Δe和v与临界冷却速度Rc的关系中都出现极值现象,对于不同的合金体系,极值出现的位置不同;金属玻璃的最优成分范围以及各种添加元素的最佳添加量行为,可能与此极值现象相关;合金中包含的组元数目多有利于提高其玻璃形成能力,玻璃形成能力强的合金,其各个组元的原子百分含量、组元原子半径差及其电负性差之间的搭配是很和谐的;融合建模的合金系之间包含的主要组元数量和种类越相近,所建立的模型的可靠程度越高,其预测结果与实测结果越吻合。
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Leading resistant factor into the necessary condition can also enlarge the quadratic convergence region near optimal solution so that it is very efficient to use the known flash calculations at one condition to iteratively compute another optimal solution at other conditions where pressure, temperature and mole fractions of components are close to known ones respectively.
在极值必要条件式中引入阻尼因子能扩大真解附近的平方收敛域,尤其在利用已知条件下的汽液平衡结果作初值直接用极值条件方程迭代计算压力、温度和组成变化不严重的相邻点的汽液平衡极值解方面效果十分显著,适合于加快组分模型的计算速度。
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In POT model, it used the technique of parameter estimator stability, making up for the limits of the currently popularly-used Mean Excess Function e, and the threshold quantitatively selected by Kurtosis Method has also been achieved, and solving the problem the illustration method couldn't be applied to.
特别是,在BMM模型中充分地考虑了子区间极值一般极限分布与极值序列极限分布之间的关系,测度了受子区间长度影响的极值VaR;在POT模型中运用参数估计量稳定性法弥补了目前普遍采用的样本平均超出量函数e法的不足,针对一些图解法无法适用的问题,实现了峰度法对阈值的定量选取,并对指数回归模型法、子样本自助法、序贯法等定量法进行了分析探讨。
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In this dissertation, the properties of extreme value models, parametric estimations of compound extreme value distribution and their applications in financial risk management fields are studied intensively.
本文主要对极值统计模型的特性、复合极值分布参数的估计方法以及极值统计模型在金融风险管理领域的应用进行研究。
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Consequently the stochastic simulation method of compound extreme value distribution is brought forward.
根据复合极值分布的特点,针对复杂失效域下多维联合概率难以解析求解的困难,本文提出了多维复合极值分布的随机模拟方法,并验证了该方法的准确性,扩大了多维复合极值分布的应用范围。
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Consequently the stochastic simulation method of compound extreme value distribution is brought forward. The present study shows that the simulation method is reliable and can give accurate solution. As an example, Poisson-Nested Logistic model is applied to the design of sea wall.
根据复合极值分布的特点,针对复杂失效域下多维联合概率难以解析求解的困难,本文提出了多维复合极值分布的随机模拟方法,并验证了该方法的准确性,扩大了多维复合极值分布的应用范围。
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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。
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On the basis of analyzing detailedly the correlative conclusions of the extreme value problem of two variable Function , this paper extends the essential condition and sufficient condition to multi-variable function by using the Taylor Formula 、Quadratic Form 、Hesse Matrix and so on,and gives a method to judge the extreme value of point whose vice-derivative doesn't exist by utilizing Lagranges theorem ,so that compensates for the blank above ,which turns idea that solve the extreme value of multi-variable function problem one by one into realities.
摘要本文在对二元函数极值问题的相关结论进行分析的基础上,用泰勒公式、二次型、海赛矩阵作为工具,将二元函数极值的必要条件和充分条件推广到多元函数的情形,而且还利用拉格朗日中值定理找到了一个判别不可导点处极值的方法,从而弥补了多元函数不可导点处极值无法判断的空缺。因而,使得用穷举判断的方法来解决多元函数的极值问题这一思路成为现实。
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When the edges of a convex polygon are traversed along one direction, the interior of the convex polygon is always on the same side of these edges, a new algorithm for computing the convex hull of a simple polygon is proposed first, which is then extended to a new algorithm for computing the convex hull of a planar point set.
本文依据凸多边形的这一特性,提出求解简单多边形凸包的新算法,进而扩展得到求解平面点集凸包的新算法。新点集凸包算法先找到点集的极值点,得到极值点间的候选点子集,再求得相邻极值点间的有序凸包点列,最后顺序连接极值点间的有序凸包点列,得到凸包。
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At first, the wind tunnel test and test data process of this study are introduced in detail. A method to calculate expected extreme values of time series with a long time interval is then proposed with its sub-sections based on the classical Gumbel theory for extreme values and the independence of observed extreme values. At last, the extreme values of the wind pressure coefficients of the present wind tunnel test are calculated with the proposed method and methods used widely at present, such as peak factor method, improved peak factor method and Sadek-Simiu method.
首先 介绍了风洞试验及试验数据处理的基本概况;然后在阐述经典Gumbel极值理论的基础上,根据观察极值的相互独立性推导了短时距下极值分布参数和长时距下极值分布参数的关系式,给出了一种由短时距样本推算长时距下的极值估算方法;最后基于风洞试验数据,将常用极值估算方法(峰值因子法、改进峰值因子法和Sadek-Simiu法)和该方法的计算结果进行了比较。
- 更多网络解释与极值相关的网络解释 [注:此内容来源于网络,仅供参考]
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extremal element:极值元素
extremal 极值曲线;极值的 | extremal element 极值元素 | extremal function 极值函数
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extremal function:极值函数
extremal element 极值元素 | extremal function 极值函数 | extremal length 极值长度
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extremal length:极值长度
extremal function 极值函数 | extremal length 极值长度 | extremal point 极值点
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extremal point:极值点
extremal length 极值长度 | extremal point 极值点 | extremal property 极值性质
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extremal point:端点,极值点
extremal 极值,极值曲线,极端的 | extremal point 端点,极值点 | extremal principle 极值原理
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extremal property:极值性质
extremal point 极值点 | extremal property 极值性质 | extremal surface 极值曲面
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extremal:极值曲线;极值的
extrapolation 外插 | extremal 极值曲线;极值的 | extremal element 极值元素
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extremal:极值曲线;极值函数
extrema extremum的复数 | extremal 极值曲线;极值函数 | extremalization 极端化
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extreme value:极值
对极值(Extreme value)分配资 推估对常态对 (lognormal)分配资 推估对柏图(Pareto)分配资 推估未之观子计画1:对极值(Extreme value)分配资 推估未之观测值之信赖区间极值(Extreme value)分配於工业上可靠 、商业上运用的非常广泛,在此分data、type II double censored data)下二 极值(Extreme value)分配,预测样本大二
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extreme value index:极值指数
极值分布:extreme value distribution | 极值指数:extreme-value index | 极值理论:extreme value theory