지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.12
- 수록면
- 18 - 24 (7page)
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초록· 키워드
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Objectives Despite increasing availability of global positioning system (GPS), no research has been conducted to analyze GPS data for exposure opportunities associated with time at indoor and outdoor microenvironments. We developed location-based and time-weighted spatial measures that incorporate indoor and outdoor time-location data collected by GPS.
Methods Time-location data were drawn from 38 female subjects in California who wore a GPS device for seven days. Ambient standard deviational ellipse was determined based on outdoor locations and time duration, while indoor time weighted standard deviational ellipse (SDE) was developed to incorporate indoor and outdoor times and locations data into the ellipse measure.
Results Our findings indicated that there was considerable difference in the sizes of exposure potential measures when indoor time was taken into consideration, and that they were associated with day type (weekday/weekend) and employment status.
Conclusions This study provides evidence that time-location weighted measure may provide better accuracy in assessing exposure opportunities at different microenvironments. The use of GPS likely improves the geographical details and accuracy of time-location data, and further development of such location-time weighted spatial measure is encouraged.
Methods Time-location data were drawn from 38 female subjects in California who wore a GPS device for seven days. Ambient standard deviational ellipse was determined based on outdoor locations and time duration, while indoor time weighted standard deviational ellipse (SDE) was developed to incorporate indoor and outdoor times and locations data into the ellipse measure.
Results Our findings indicated that there was considerable difference in the sizes of exposure potential measures when indoor time was taken into consideration, and that they were associated with day type (weekday/weekend) and employment status.
Conclusions This study provides evidence that time-location weighted measure may provide better accuracy in assessing exposure opportunities at different microenvironments. The use of GPS likely improves the geographical details and accuracy of time-location data, and further development of such location-time weighted spatial measure is encouraged.
목차
Introduction
Materials and Methods
Results
Discussion
References
참고문헌 (28)
참고문헌 신청
Freeman NC / 2002 / Methods for collecting time/activity pattern information related to exposure to combustion products / Chemosphere 49((9):979~992
Elgethun K / 2007 / Comparison of global positioning system (GPS) tracking and parent- report diaries to characterize children’s time-location patterns / J Expo Sci Environ Epidemiol 17(2):196~206
Rodríguez DA / 2005 / Portable global positioning units to complement accelerometry-based physical activity monitors / Med Sci Sports Exerc 37(11):S572~S581
Elgethun K / 2003 / Time-location analysis for exposure assessment studies of children using a novel global positioning system instrument / Environ Health Perspect 111(1):115~122
Milton R / 2007 / Mapping carbon monoxide using GPS tracked sensors / Environ Monit Assess 124((1-3):1~19
Elgethun K / 2007 / Comparison of global positioning system (GPS) tracking and parent- report diaries to characterize children’s time-location patterns / J Expo Sci Environ Epidemiol 17(2):196~206
Rodríguez DA / 2005 / Portable global positioning units to complement accelerometry-based physical activity monitors / Med Sci Sports Exerc 37(11):S572~S581
Elgethun K / 2003 / Time-location analysis for exposure assessment studies of children using a novel global positioning system instrument / Environ Health Perspect 111(1):115~122
Milton R / 2007 / Mapping carbon monoxide using GPS tracked sensors / Environ Monit Assess 124((1-3):1~19
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UCI(KEPA) : I410-ECN-0101-2015-530-001447569