title: Contextual Uncertainties, Human Mobility, and Perceived Food Environment: The Uncertain Geographic Context Problem in Food Access Research.
abstract: We examined the uncertainty of the contextual influences on food access through an analytic framework of the uncertain geographic context problem (UGCoP). We first examined the compounding effects of two kinds of spatiotemporal uncertainties on people's everyday efforts to procure food and then outlined three key dimensions (food access in real time, temporality of the food environment, and perceived nutrition environment) in which research on food access must improve to better represent the contributing environmental influences that operate at the individual level. Guidelines to address the UGCoP in future food access research are provided to account for the multidimensional influences of the food environment on dietary behaviors.
authors.affiliation: Xiang Chen is with the Department of Emergency Management, Arkansas Tech University, Russellville. Mei-Po Kwan is with the Department of Geography and Geographic Information Science, University of Illinois at Urbana-Champaign, Champaign.
authors.forename: Xiang
authors.initials: X
authors.lastname: Chen
authors.affiliation: Xiang Chen is with the Department of Emergency Management, Arkansas Tech University, Russellville. Mei-Po Kwan is with the Department of Geography and Geographic Information Science, University of Illinois at Urbana-Champaign, Champaign.
authors.forename: Mei-Po
authors.initials: MP
authors.lastname: Kwan
mesh_terms: D004032:Diet; D004777:Environment; D005523:Food Supply; D006801:Humans; D012106:Research / Q000458:organization & administration*; D062211:Spatio-Temporal Analysis; D035501:Uncertainty