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。

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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。

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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％。

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"If we look at the total number of users that have been reported to us and consider we are only contacting a small portion of the Australian population, the estimation would be more than 100, 000, " he said.

BBC: Kournikova computer virus hits hard