Yujie Hu is Assistant Professor of GIScience in the School of Geosciences at the University of South Florida in Tampa, Florida. He was a Research Fellow (2016-2017) with the Kinder Institute for Urban Research at Rice University in Houston, Texas. His research and teaching interests focus on the development and applications of GIS, spatial analysis, and visualization techniques in urban systems and public policy implications. The subjects of his research include transportation, public health, crime, and human-environment interactions. His research has been covered by the ABC 13 News of Houston and the Houston Public Media News, and supported by the Florida Sea Grant, Southeastern Association of State Highway and Transportation Officials (SASHTO), and the American Association of Geographers (AAG). He is a Board Member of the Transportation Geography Specialty Group of American Association of Geographers. Fahui Wang is James J. Parsons Professor and Chair of the Department of Geography and Anthropology, Louisiana State University (LSU). His research focuses on applications of GIS and computational methods in human geography (including urban, transportation, economic, cultural and historical geography) and public policy (including urban planning, public health and public safety). His work has been supported by the National Science Foundation, U.S. Department of Energy, U.S. Department of Health and Human Services (Agency for Healthcare Research & Quality and the National Cancer Institute), U.S. Department of Housing and Urban Development, U.S. Department of Justice (National Institute of Justice and Office of Juvenile Justice and Delinquency Prevention), and the National Natural Science Foundation of China. He has published over 130 refereed articles and five books (including two edited books). He was a recipient of LSU Rainmaker Awards for outstanding research, scholarship and creative activity (2009, 2015) and LSU Distinguished Faculty Award (2018), and a Policy Winner of 2015 Outstanding Article of the Year from the Agency for Healthcare Research and Quality, U.S. Department of Health and Human Services.