人口与健康调查点位移对栅格分析的影响。

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2016-07-01 Epub Date: 2015-06-23 DOI:10.1007/s40980-015-0013-1

Carolina Perez-Heydrich, Joshua L Warren, Clara R Burgert, Michael E Emch

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引用次数: 30

摘要

在本文中，我们探讨了在整合辅助光栅数据的研究中，研究结果对与人口与健康调查(DHS)数据相关的空间位移的敏感性。通过模拟研究，我们发现DHS点位移对基于栅格的分析的影响可以通过生成代表邻域缓冲区平均值的协变量来缓和。此外，发现栅格表面特征(即空间平滑度)会影响通过点位移引入的偏差程度。虽然简单的点提取在涉及光滑连续表面的分析中产生无偏估计，但不建议在涉及分类光栅表面的分析中使用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Influence of Demographic and Health Survey Point Displacements on Raster-Based Analyses.

查看原文本刊更多论文

Influence of Demographic and Health Survey Point Displacements on Raster-Based Analyses.

With this paper we explore the sensitivity of study results to spatial displacements associated with Demographic and Health Survey (DHS) data in research that integrates ancillary raster data. Through simulation studies, we found that the impact of DHS point displacements on raster-based analyses can be moderated through the generation of covariates representing average values from neighborhood buffers. Additionally, raster surface characteristics (i.e., spatial smoothness) were found to affect the extent of bias introduced through point displacements. Although simple point extraction produced unbiased estimates in analyses involving smooth continuous surfaces, it is not recommended in analyses that involve categorical raster surfaces.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.