Refining Time-Activity Classification of Human Subjects Using the Global Positioning System

• Maogui Hu,

  Affiliations Program in Public Health, College of Health Sciences, University of California Irvine, Irvine, California, United States of America, State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, China, Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China

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• Wei Li,

  Affiliation Department of Landscape Architecture and Urban Planning, Texas A&M University, College Station, Texas, United States of America

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• Lianfa Li,

  Affiliations Program in Public Health, College of Health Sciences, University of California Irvine, Irvine, California, United States of America, State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, China

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• Douglas Houston,

  Affiliation Department of Planning, Policy and Design, School of Social Ecology, University of California Irvine, Irvine, California, United States of America

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• Jun Wu

  * E-mail: junwu@uci.edu

  Affiliation Program in Public Health, College of Health Sciences, University of California Irvine, Irvine, California, United States of America

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