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Classification of indoor-outdoor location using combined global positioning system (GPS) and temperature data for personal exposure assessment
OBJECTIVES: The objectives of this study was to determine the accuracy of indoor-outdoor classification based on GPS and temperature data in three different seasons. METHODS: In the present study, a global positioning system (GPS) was used alongside temperature data collected in the field by a techn...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5664917/ https://www.ncbi.nlm.nih.gov/pubmed/29165131 http://dx.doi.org/10.1186/s12199-017-0637-4 |
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author | Lee, B. Lim, C. Lee, K. |
author_facet | Lee, B. Lim, C. Lee, K. |
author_sort | Lee, B. |
collection | PubMed |
description | OBJECTIVES: The objectives of this study was to determine the accuracy of indoor-outdoor classification based on GPS and temperature data in three different seasons. METHODS: In the present study, a global positioning system (GPS) was used alongside temperature data collected in the field by a technician who visited 53 different indoor locations during summer, autumn and winter. The indoor-outdoor location was determined by GPS data alone, and in combination with temperature data. RESULTS: Determination of location by the GPS signal alone, based on the loss of GPS signal and using the used number of satellites (NSAT) signal factor, simple percentage agreements of 73.6 ± 2.9%, 72.9 ± 3.4%, and 72.1 ± 3.1% were obtained for summer, autumn, and winter, respectively. However, when temperature and GPS data were combined, simple percentage agreements were significantly improved (87.9 ± 3.3%, 84.1 ± 2.8%, and 86.3 ± 3.1%, respectively). A temperature criterion for indoor-outdoor determination of ~ Δ 2°C for 2 min could be applied during all three seasons. CONCLUSION: The results showed that combining GPS and temperature data improved the accuracy of indoor-outdoor determination. |
format | Online Article Text |
id | pubmed-5664917 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-56649172017-11-08 Classification of indoor-outdoor location using combined global positioning system (GPS) and temperature data for personal exposure assessment Lee, B. Lim, C. Lee, K. Environ Health Prev Med Short Communication OBJECTIVES: The objectives of this study was to determine the accuracy of indoor-outdoor classification based on GPS and temperature data in three different seasons. METHODS: In the present study, a global positioning system (GPS) was used alongside temperature data collected in the field by a technician who visited 53 different indoor locations during summer, autumn and winter. The indoor-outdoor location was determined by GPS data alone, and in combination with temperature data. RESULTS: Determination of location by the GPS signal alone, based on the loss of GPS signal and using the used number of satellites (NSAT) signal factor, simple percentage agreements of 73.6 ± 2.9%, 72.9 ± 3.4%, and 72.1 ± 3.1% were obtained for summer, autumn, and winter, respectively. However, when temperature and GPS data were combined, simple percentage agreements were significantly improved (87.9 ± 3.3%, 84.1 ± 2.8%, and 86.3 ± 3.1%, respectively). A temperature criterion for indoor-outdoor determination of ~ Δ 2°C for 2 min could be applied during all three seasons. CONCLUSION: The results showed that combining GPS and temperature data improved the accuracy of indoor-outdoor determination. BioMed Central 2017-04-04 2017 /pmc/articles/PMC5664917/ /pubmed/29165131 http://dx.doi.org/10.1186/s12199-017-0637-4 Text en © The Author(s). 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Short Communication Lee, B. Lim, C. Lee, K. Classification of indoor-outdoor location using combined global positioning system (GPS) and temperature data for personal exposure assessment |
title | Classification of indoor-outdoor location using combined global positioning system (GPS) and temperature data for personal exposure assessment |
title_full | Classification of indoor-outdoor location using combined global positioning system (GPS) and temperature data for personal exposure assessment |
title_fullStr | Classification of indoor-outdoor location using combined global positioning system (GPS) and temperature data for personal exposure assessment |
title_full_unstemmed | Classification of indoor-outdoor location using combined global positioning system (GPS) and temperature data for personal exposure assessment |
title_short | Classification of indoor-outdoor location using combined global positioning system (GPS) and temperature data for personal exposure assessment |
title_sort | classification of indoor-outdoor location using combined global positioning system (gps) and temperature data for personal exposure assessment |
topic | Short Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5664917/ https://www.ncbi.nlm.nih.gov/pubmed/29165131 http://dx.doi.org/10.1186/s12199-017-0637-4 |
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