AIM: To explore the effect of concurvity of generalized additive models (GAMs) in the study of air pollution and human health and to diminish the influence of concurvity.

目的：针对大气污染与健康关系研究中拟合广义可加模型时的共曲线性现象进行研究并试图减小其影响。

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Objective in studying the effects of air pollution on human health we use generalized additive models and diagnose the outliers then try to diminish the effect of them.

目的针对大气污染与健康关系研究中拟合广义可加模型时的离群点进行诊断并试图减小其影响。

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A computationally efficient multigrid control volume method based additive correction strategy is developed for the solution of the very high bearing number and shaped rail air bearing problems.

本文提出一种计算效率高的、基于叠加修正策略的多重网格控制体方法，解决轴承数很大和导轨形状复杂的气膜承载问题。

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To Texas litigator Scott Summy, methyl tertiary butyl ether, the gasoline additive that reduces air pollution, is the devil--and his savior.

FORBES: Demonizing for Dollars

MTBE, an additive mixed with petrol to reduce air pollution, had caused it to leak into water supplies.

ECONOMIST: Business this week