ArticleInternational journal of environmental research and public health2018
An Innovative Context-Based Crystal-Growth Activity Space Method for Environmental Exposure Assessment: A Study Using GIS and GPS Trajectory Data Collected in Chicago.
Article in International journal of environmental research and public health, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- The Impact of Scale on Extracting Individual Mobility Patterns from Location-Based Social Media.Sensors (Basel, Switzerland) · 2024Article
- Accounting for space, time, and behavior using GPS derived dynamic measures of environmental exposure.Health & place · 2023Article
- Individual level spatial-temporal modelling of exposure potential of livestock in the Cove Wash watershed, Arizona.Annals of GIS · 2023Article
- The impact of GPS-derived activity spaces on personal PMEnvironmental research · 2022Article
- Field Evaluation and Calibration of Low-Cost Air Pollution Sensors for Environmental Exposure Research.Sensors (Basel, Switzerland) · 2022Article
- An Integrated Individual Environmental Exposure Assessment System for Real-Time Mobile Sensing in Environmental Health Studies.Sensors (Basel, Switzerland) · 2021Article
- Daily activity locations k-anonymity for the evaluation of disclosure risk of individual GPS datasets.International journal of health geographics · 2020Article
- DyBMJ open · 2019Article
- An Analytical Framework for Integrating the Spatiotemporal Dynamics of Environmental Context and Individual Mobility in Exposure Assessment: A Study on the Relationship between Food Environment Exposures and Body Weight.International journal of environmental research and public health · 2018Article
- Walking and Walkability in Pre-Set and Self-Defined Neighborhoods: A Mental Mapping Study in Older Adults.International journal of environmental research and public health · 2018Article
Corrections and comments
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Authors and funding
3 authors.
Funding
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Abstract
Scholars in the fields of health geography, urban planning, and transportation studies have long attempted to understand the relationships among human movement, environmental context, and accessibility. One fundamental question for this research area is how to measure individual activity space, which is an indicator of where and how people have contact with their social and physical environments. Conventionally, standard deviational ellipses, road network buffers, minimum convex polygons, and kernel density surfaces have been used to represent people's activity space, but they all have shortcomings. Inconsistent findings of the effects of environmental exposures on health behaviors/outcomes suggest that the reliability of existing studies may be affected by the uncertain geographic context problem (UGCoP). This paper proposes the context-based crystal-growth activity space as an innovative method for generating individual activity space based on both GPS trajectories and the environmental context. This method not only considers people's actual daily activity patterns based on GPS tracks but also takes into account the environmental context which either constrains or encourages people's daily activity. Using GPS trajectory data collected in Chicago, the results indicate that the proposed new method generates more reasonable activity space when compared to other existing methods. This can help mitigate the UGCoP in environmental health studies.
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Registered trials
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