Abstract:
:This manuscript develops a conditional demand system for three activities (indoor chores and leisure, outdoor chores and active leisure, and outdoor inactive leisure), and considers how individuals' activity schedules respond to ozone pollution and asthma symptom severity. The data are for a sample of individuals living near Los Angeles. Our approach differs from earlier ones in that we use a system of equations that allows for correlations across activity types. The empirical results suggest that increased ozone levels have a statistically significant influence on the amount of time that asthmatics spend in one of the activities, even though the examined time period exhibited relatively low ozone levels. Elasticities are estimated to better indicate the sensitivity of humans' activity schedules to pollution levels, and the one ozone effect is shown to be fairly weak. This study adds to the existing literature on the influence of ozone on asthma and asthma sufferers, some of which finds a causal link while other studies do not. The study results are also of interest because the asthmatics in the sample are all adults, whereas some recent research showing a link between ozone and asthma has focused on children.
journal_name
J Environ Managejournal_title
Journal of environmental managementauthors
Eiswerth ME,Douglass Shaw W,Yen STdoi
10.1016/j.jenvman.2005.02.010keywords:
subject
Has Abstractpub_date
2005-10-01 00:00:00pages
56-63issue
1eissn
0301-4797issn
1095-8630pii
S0301-4797(05)00124-6journal_volume
77pub_type
杂志文章abstract::In recent decades, it has been observed that most forest fires in Europe were caused by people. Extreme droughts, which are more often prolonged, can increase the risk of forest fires, not only in southern Europe but also, in Central Europe. Nonetheless, catastrophic fire events are not well recognized in the Central ...
journal_title:Journal of environmental management
pub_type: 杂志文章,评审
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journal_title:Journal of environmental management
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journal_title:Journal of environmental management
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journal_title:Journal of environmental management
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journal_title:Journal of environmental management
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pub_type: 杂志文章
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journal_title:Journal of environmental management
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journal_title:Journal of environmental management
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journal_title:Journal of environmental management
pub_type: 杂志文章,评审
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