查询词典 variance

using the returns variance minimum of hedging as objective function,using positive profit skenewss as constraint of serious loss'probability,the constraints of hedger serious loss optimal model is set up.

摘 要：以套期保值收益率的最小方差为目标函数，以收益率偏度大于等于零控制套保者遭受重大损失发生的概率，建立了基于重大损失控制的套期保值优化模型。

Considering transaction cost, Hedger's attitude to risk, variance of foreign exchange rate , with Von Neumann Morgenstern utility function and Bernoulli principle, this paper analyses optimal hedging of the foreign exchange risk during the import/export with forward/future contracts, and the influence of the above mentioned factors on the optimal hedge rate.

本文在前人研究基础上，考虑交易费用，决策人对风险的态度，汇率相对风险大小等因素，用Von Neumann- Morgenstern效用函数和 Bernoulli决策法则建立了研究利用远期/期货和约做外汇套期保值问题的一般模型，然后具体分析了一种典型情况下的最优套期保值率的性质。

In the estimation of heritability, various non-genetic factors must be excluded from the variance of sire or dam.

在遗传力的估计过程中，需将多种非遗传因素的影响从公畜间方差或者母畜间方差中剔除。

They are three-act structure seemingly in harmony but actually at variance; no suspenses; exoteric final; undefined third party; metaphor; no potentially heroical character.

根据张元的先例，"浮出地面"后的华语游民导演，他们必然在个人理念和市场需求之间，在电影的文学叙事上作出调整和转变，一定程度上也是克服原有的叙事缺陷，而同时国家有关部门也应予以积极的关心和指导。

Histogram character is not affected by object figures variance and scale, and it has good stability.

直方图特征不受目标的外形和比例变化的影响，具有较好的稳定性。

After verifying the homogeneity of variances between the groups (verification of the variation coefficients), means were compared through an analysis of variance.

验证完组间变异的同质性后，均值通过方差分析进行比较。

Objective:To introduce a robust method for homogeneity of variance .

目的 ：介绍一种较为稳健的方差齐性检验方法。

"Grammy" is in English Gramophone of the variance homonym.

"格莱美"是英文Gramophone的变异谐音。

The hospitaller with different part will lead to variance emotional labor , and internal marketing ,but emotional exhaustion had no significant difference.

不同工作单位的护理人员在情绪劳务与内部行销作为之研究架构中各变项有差异，但是情绪耗竭变项无显著差异。

The impact of Hurst index and variance coefficient on network performance is studied by mean of simulation.

目前绝大部分研究都集中在Hurst系数的估计及其性能影响上，这是不全面的。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。