Despite increasing administrative and leadership responsibilities, Sui has kept his research and teaching active up to the present. He has published over 260 refereed journal articles and book chapters, he has also authored/co-authored a dozen books, edited volumes, and covered a variety of topics, ranging from GIS for Homeland Security,
Crowdsourcing Geographic Knowledge Production, to Human Dynamics in Smart and Connected Communities, Mapping COVID-19 in Space and time. Sui is considered to have made multiple contributions to theoretical foundations of geographic information science, new methodologies to study cities and environmental issues, understanding the emerging paradigms in geographic thoughts, promoting convergence of geographical research, and setting the agenda for research reproducibility and replicability in geography and beyond. He is currently working on projects related to seamlessly integrating space and place to conduct holistic geographic analysis with the goal of espousing a new quantum turn in geography and GIScience. ==Career==