抽样分布

In this paper,The Sampling inspection plan of the standard form for the coefficient of variation of Gumbel distribution is given.

给出了 Gumbel分布变异系数的计量标准型抽样检验方案。

Finaly, the reliability of static ice force for different reccurrence periods is calculated by taking Schwarz formula as formula of calculating static ice force and results are simulated by Monte Carlo important sampling method.

最后，以Schwarz公式为静冰力计算公式，结合得到的冰厚和冰强度的概率分布，采用映射变换法进行不同重现期静冰力的可靠度分析计算，并用蒙特卡罗重点抽样法进行模拟。

In this article,students actually present at exams are regarded as simple random sampling of all the students,and the sampling and assessing ways are applied.

将实考考生看作为考生总体的一个简单随机样本，应用抽样估值的方法，在若干合适的概率分布模型下，收集和推演了考生总体合格率的一些估计公式，以估计有考生缺考时，考生总体的合格率。

Subsampling for dependent or nonidentically distributed data: blockwise and other methods.

非独立或分布不一致数据的次级抽样：顺时针法或其他方法。

Subsampling for dependent or nonidentically distributed data: blockwise and other methods. Carlstein.

非独立或分布不一致数据的次级抽样：顺时针法或其他方法。

Design for Manufactory ; Design for Yield ; Parametric Yield ; Global Disturbance ; Tolerance Region ; Acceptability Region ; Uniform Sampling ; Uniform Design for Experiment ; Normal Distribution ; Response Surface Modeling

国家高技术研究发展计划(863计划)；教育部科学技术研究项目可制造性设计；成品率设计；参数成品率；全局扰动；容差域；可接受域；均匀抽样；均匀试验设计；正态分布；响应表面模型

Dendroctonus armandi ; distribution ; sampling model ; Pinus arma ndi

华山松大小蠹；分布；抽样模型；华山松

The population density, distribution, and sampling model of a bark beetle,Dendroctonus armanˉ di , on Huashan conifer,Pinus armandi , were investigated in a for est stand located in Liuba County, Shaanxi Province, China.

在陕西省留坝县的华山松林区，对华山松大小蠹（Dend roctonus armanˉ di）种群密度、分布状态和抽样模型进行了研究。

With good extendibility, this software can be extended by adding new distribution patterns.

该软件可用于生物的抽样、保护、模拟等研究，以及分布型展示等。

Objective:This paper proposes an iterative noncentral procedure for the sample size determination in log rank test and compares it with the LachinFoulkes procedure. Methods: Samplings are performed with a prescribed size.

本研究首先按临床数据实际分析过程说明设计参数赋值依据和生存研究所需样本量测定原则，然后提出迭代非中心法，即借助重复抽样估计其非中心参数，测定所需样本量，并同基于指数分布的方法进行比较。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。