查询词典 distributions

Likelihood inference will be developed using the exponential family of distributions. Extensions to quasi-likelihood methods will also be discussed, which allow the relaxation of some model assumptions.

运用指数族分布发展似然推断，还将讨论允许放松一些模型假设的准似然方法的扩展。

Exponential family of distributions...

大家庭尤指三代以上同堂者

For separable and continous exponential family models (such as normal, gamma, and inverse Gaussian models), this paper discusses the tests for departures from nominal dispersion in the framework of longitudinal nonlinear models with varying dispersion and/or random effects. The score test statistics are constructed and their asymptotic distributions and local powers are derived.

本文针对可分的连续型指数族回归模型（如正态模型，Γ模型，逆高斯模型），讨论广义非线性纵向数据模型中偏离名义离差的检验问题，得到了检验的score统计量，并推导了它们的渐近分布和局部近似功效。

On the basis of introducing the distributions theory, the paper tells the actuality of the development of Internet distribution channels, and many problems of the development of Internet distribution channels are analyzed. Such as the quality of products, after service and security of a deal cannot be safeguarded, logistics often drop behind. The paper also gives some advices from enterprise interior and enterprise exterior angle, for example, the government should intensify legislation, a company can potentiate its safety management, which will help enterprise adapts the network time competition.

本论文在介绍网络分销渠道理论的基础上，介绍了网络分销渠道的现状，分析了网络分销渠道发展中所普遍存在的问题，如产品质量、售后服务、交易安全得不到保障，物流工作落后等问题；最后从企业外部与企业内部两个不同角度提供了决策建议，如政府应加强相关立法工作，企业可以通过加强安全管理，以帮助企业更加适应网络时代的竞争规则。

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。

It is found that the plain, the front slope and the prodelta of the fan delta have different sedimentary mechanisms, leading to different surface gradients and grain size distributions.

结果表明，扇三角洲平原、前缘斜坡和前扇三角洲3个亚相沉积动力机制不同，导致各相带的扇面坡度和粒度分布特徵明显不同。

The microfacies and their distributions of fan delta front in Shuanghe oil field are analyzed in detail by using sealed coring data, highly dense well patterns and so on.

储层的微相砂体类型、几何规模特征及分布规律是分析地下油水运动规律和调整注采井网的基础。

Moreover, the nonrandomness of the distributions of endpoints or midpoints implied that asymmetrical hump-shaped curve of the species richness might come from the combination of the favorableness hypothesis, the productivity hypothesis, and the mid-domain effect.

进一步比较鸟种海拔分布范围的所在位置，其观察值与预测值的差异，显示繁殖鸟类种丰富度在海拔梯度上的不对称驼型分布，可能是由喜好假说、生产力假说及中间区域效应的合成效应产生。

This fact implies that the current distributions in polar regions are governed by the configuration of the geomagnetic field lines.

说明平静期间的极区电流分布与磁力线位形有密切关系，进而说明地磁场对空间环境的影响。

Firstly, according to electromagnetic field theory, the 2-dimensional (2-D) mathematical model of a three phase squirrel-cage Y802-2 induction motor is developed. Then general equations can be deduced from finite element discrete and functional analysis. The motor's 2D solving region of electromagnetic field is given based on the boundary conditions and assumption conditions of the squirrel-cage induction motor. Through finite element mothod and inner–outer convergence method, magnetic field distributions and magnetic forces of bars can be calculated in following rotor conditions: health rotor, one single broken bar, two adjacent broken bars, two broken bars with one good interval, two broken bars with two good interval and four adjacent broken bars.

本文首先根据电磁场理论建立Y802-2型三相笼型感应电动机二维电磁场的数学模型，并对其进行了有限元离散以及泛函分析，推导出总体方程；在基本假设和边界条件基础上，给出笼型感应电动机二维电磁场的求解区域，然后应用有限元并结合内外双收敛方法，对样机稳态运行进行数值计算，得出电机在转子完好、一根导条断裂、连续两根导条断裂、间隔一根两根导条断裂、间隔两根两根导条断裂及连续四根导条断裂六种情况下的磁场分布和导条所受电磁力的变化情况。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。