International researches mainly include population estimation from the land cover data, DMSP-OLS night light data or spectrum information directly afforded by the Remote Sensing images.
国外研究主要包括从遥感解译信息反演人口数据、从DMSP -OLS夜间灯光数据反演人口数据和从遥感获取的光谱特征直接反演人口数据。
To forecast the outbreak of pest insects is based on the estimation of population density.
准确估计害虫种群密度是进行虫害预测预报的基础。
The estimation of adjusted population attributable risk is 5.31% based on the multivariable logishc regression model analysis.
在该多变量回归模型的基础上估计的调整人群归因风险度为5．31％。
A new idea served for study on genetic gains of multiple character and estimation of basic population size was represented in the paper.
为作物育种中多性状遗传进度研究及群体规模估计提出了新的设想。
The calculation formulas of sample size based on the error limitation are given for estimation of population mean.
对于样本均值估计总体均值，给出了基于误差限制的样本容量的计算式。
ResultsSize estimation methods and procedures for different type high risk population were formed.
结果研究形成了不同类别高危人群基数估计的适宜方法和流程；
Conclusion the SAEM algorithm is an efficient fitting method for the population pharmacokinetics parameter estimation.
结论利用SAEM算法估计群体药代动力学参数是一个比较好的方法。
In this paper, on the basis of structural regression models the estimation of the population-averaged treatment effects is given when the response variable is a multi-dimensional vector.
在可交换条件下，当响应变量为多维时，利用结构回归模型研究总体平均处理效应的估计。
In this paper, We give the sample breakdown point of a test for moment estimation of population variance and analyze the asymptotically normal characteristic of the sample breakdown point.
本文给出了总体方差矩估计检验的样本崩溃点，并分析了该样本崩溃点的渐近正态性。
This paper deals with the estimation of population mean in systematic sampling by use of auxiliary information in order to improve the accuracy of the estimate.
讨论了等距抽样中，如何利用辅助信息改进总体平均值的估计，以达到提高估计精度之目的。
ObjectiveTo investigate HIV high risk population size estimation method, analyze the epidemic situation in China and offer scientific evidence for policy making.
目的研究适合我国艾滋病疫情的高危人群估计方法，并进行流行形势分析，为制定防治政策提供科学依据。
The problem for linear biased estimation of the population origin moment is discussed in this paper.
本文讨论母体原点矩的线性有偏估计问题。
This paper deals with the incomplete sample estimation of finite population mean in existing of nonrespondent sampling units.
本文讨论了存在不回答样本单位时，有限总体均值的缺损样本估计。
The density of crowed is often high in the unexpected crowd incidents. So this paper decided to adopt texture estimation to extract the characteristics of population density.
在突发人群聚集事件发生时，通常是高密度场景，因此本文决定采用基于纹理的分析方法来提取人群密度特征。
Compared with the divisor method, the population-based survey method is more susceptible to the impact of external conditions, which may result in estimation errors.
与除数法相比，人群调查法更易受外部条件的影响，造成估计误差。
Compared with the divisor method, the population-based survey method is more susceptible to the impact of external conditions, which may result in estimation errors.
与除数法相比，人群调查法更易受外部条件的影响，造成估计误差。
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