分布参数

Through a series of studies, the knowledge on key parameters such as distribution, magnitude and temporal variation of negative friction of structural pile foundation, and the location of neutral point is acquired, which is valuable and contributes largely to the subsequent construction of the Yangshan project.

通过一系列的研究，取得了对该结构桩基负摩擦力分布、数值大小、随时间变化的规律、中性点位置等关键参数的认识，对指导洋山后续工程的建设起到的很有价值的成果。

The mathematics model of newsboy problem with time-based parameter is given, and through analyzing model and numerical instance, it shows, with contrast of traditional newsboy problem that time factor is not taken into account, the former can increase the income of the dealer.

建立了正态分布下时变参数的报童问题的数学模型，通过模型的求解和数值分析，结果显示，与传统的不考虑时间因素的报童模型相比，前者能够增加零售商的收益。

For noncentrality parameter matrix in noncentral wishart distribution, based on usual unbiased estimator, a series of pre-test estimators are obtained.

1对于非中心Wishart分布的非中心参数矩阵，本文基于通常的无偏估计给出了一系列的预检验估计。

For Mode III problems,the local nonhomogeneity of interlayer and thedistribution parameter determine the stress intensity factor and strain energy releaserate.

对于III型问题，界面层材料局部非均匀性及分布特征参数反映了应力强度因子和应变能释放率的特征。

Estimation of the parameters included in the lifetime distribution of the individual components in a series system with independent and nonidentical components are introduced by using masked data.

在可靠性分析中，人们通常通过分析系统的寿命数据来估计该系统中各组成单元的寿命分布中的未知参数。

Probability distribution of anchoring data can be regarded as nonlinear programming with certain restriction. Programming with the restriction can be transferred to nonlinear programming without restriction by use of Lagrange Method and can be then easily resolved by step-acceleration method of one variable.

锚固强度参数的概率分布问题可以归结为带约束的非线性规划问题，利用条件极值的拉格朗日乘数法可以将带约束的规划问题转化为无约束的非线性规划问题，并可以采用运筹学中的单变量步长加速法非常方便地求解。

A nonparametric kernel estimation of the flood frequency with historic information is presented in this paper. The limitation in assuming a distribution type is overcome.

本文提出了在有历史洪水情况下洪水频率的非参数核估计方法，克服了现行方法假定分布型式的局限。

Window width ; Diameter distribution ; Kernel density estimation ; Nonparametric statistical model ; Stand table

窗宽；直径分布；核密度估计；非参数统计模型；林分表

The mean shift algorithm is a nonparametric statistical method for seeking the nearest mode of a point sample distribution.

均值移位算法是一种搜索与样本点分布最相近模式的非参数统计方法。

Considering the low effective of GARCH model for high frequency data,the nonparametric method is adopted to estimate the value at risk of high frequency data.

文章在GARCH模型对高频数据低效的情况下，从非参数的角度给出风险价值一个相合估计量，这个估计量不依赖于总体分布。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。