Faculty Profiles

Gu, X., Liu, L., Han, S. Y., Lan, M., Zhou, H., Chen, D., & Su, Z. (2025). The impact of changing ambient population composition on crime during COVID-19 lockdowns. Applied Geography.

Gu, X., Han, S. Y., Myint, S. W., Cho, E., & Zhu, Y. (n.d.). Exploring Dynamic Human Mobility of Diverse Social Groups Under Heat Conditions: A Simulation-Based Approach.

Jiang, Y., Yuan, Y., & Han, S. Y. (2024). An entropy-based measurement for understanding origin-destination trip distributions: a case study of New York City taxis. Big Earth Data, 8, 673--702. https://doi.org/10.1080/20964471.2024.2363548

Han, S. Y., Kim, J., Jiang, Y., Kang, J.-Y., Han, C., Michels, A., & Wang, S. (n.d.). CyberGIS-Vis for Democratizing Access to Scalable Spatiotemporal Geovisual Analytics: A Case Study of COVID-19. https://doi.org/https://dl.acm.org/doi/10.1145/3681777.3698474

Han, S. Y., Kang, J.-Y., Lyu, F., Baig, F., Smilovsky, D., Park, J., & Wang, S. (2023). A cyberGIS approach to exploring neighborhood-level social vulnerability for disaster risk management. Transactions in GIS, 00, 1–17. https://doi.org/10.1111/tgis.13106

Park, J., Michels, A. C., Lyu, F., HAN, S. Y., & Wang, S. (2023). Daily changes in spatial accessibility to intensive care unit (ICU) beds and their relationship with the case-fatality ratio of COVID-19 in the state of Texas, USA. Health and Place, 154, 102929. https://doi.org/10.1016/j.apgeog.2023.102929

Lyu, F., Wang, S., Han, S. Y., Catlett, C., & Wang, S. (2022). An integrated cyberGIS and machine learning framework for fine-scale prediction of Urban Heat Island using satellite remote sensing and urban sensor network data. Urban Informatics, 1. https://doi.org/10.1007/s44212-022-00002-4

Baig, F., Michaels, A., Xiao, Z., Han, S. Y., Padmanabhan, A., Li, Z., & Wang, S. (2022). CyberGIS-Cloud: A unified middleware framework for cloud-based geospatial research and education (pp. 1–4). Practice and Experience in Advanced Research Computing. https://doi.org/10.1145/3491418.3535148

Park, J., Zhang, H., Han, S. Y., Nara, A., & Tsou, M.-H. (2020). Estimating Hourly Population Distribution Patterns at High Spatiotemporal Resolution in Urban Areas Using Geo-Tagged Tweets and Dasymetric Mapping. Leibniz International Proceedings in Informatics. https://doi.org/10.4230/LIPIcs.GIScience.2021.I.10

Rey, S., Han, S. Y., Kang, W., Knaap, E., & Cortes, R. X. (2020). A Visual Analytics System for Space–Time Dynamics of Regional Income Distributions Utilizing Animated Flow Maps and Rank‐based Markov Chains. Geographical Analysis, 52, 537–557. https://doi.org/10.1111/gean.12239

Kang, W., Rey, S., Wolf, L., Knaap, E., & Han, S. Y. (2020). Sensitivity of sequence methods in the study of neighborhood change in the United States. Computers, Environment and Urban Systems, 81. https://doi.org/10.1016/j.compenvurbsys.2020.101480

Han, S. Y., Rey, S., Knaap, E., Kang, W., & Wolf, L. (2019). Adaptive Choropleth Mapper: An Open-Source Web-based Tool for Synchronous Exploration of Multiple Variables at Multiple Spatial Extents. ISPRS International Journal of Geo-Information, 8(11), 509. https://doi.org/10.3390/ijgi8110509

Han, S. Y., Tsou, M.-H., Knaap, E., Rey, S., & Cao, G. (2019). How Do Cities Flow in an Emergency? Tracing Human Mobility Patterns during a Natural Disaster with Big Data and Geospatial Data Science. Urban Science, 3(2), 51. https://doi.org/10.3390/urbansci3020051

Rey, S., Knaap, E., Han, S. Y., Wolf, L., & Kang, W. (2018). Spatio-temporal analysis of socioeconomic neighborhoods: The Open Source Longitudinal Neighborhood Analysis Package (OSLNAP) (pp. 121–128). https://doi.org/10.25080/Majora-4af1f417-012

Tsou, M.-H., Jung, C.-T., Allen, C., Yang, J.-A., Han, S. Y., Spitzberg, B. H., & Dozier, J. (2017). Building a real-time geo-targeted event observation (Geo) viewer for disaster management and situation awareness (pp. 85–98). Springer International Publishing. https://doi.org/10.1007/978-3-319-57336-6_7

Han, S. Y., Clarke, K., & Tsou, M.-H. (2017). Animated Flow Maps for Showing Human Movement: Two Demonstrations with Air Traffic and Twitter Data (pp. 1–10). Proceedings of the 1st ACM SIGSPATIAL Workshop on Analytics for Local Events and News. https://doi.org/10.1145/3148044.3148049

Han, S. Y., Tsou, M.-H., & Clarke, K. C. (2017). Revisiting the death of geography in the era of Big Data: the friction of distance in cyberspace and real space. International Journal of Digital Earth, 11(5), 451–469. https://doi.org/10.1080/17538947.2017.1330366

Yang, J.-A., Tsou, M.-H., Jung, C.-T., Jung, C.-T., Allen, C., Spitzberg, B. H., … Han, S. Y. (2016). Social media analytics and research testbed (SMART): Exploring spatiotemporal patterns of human dynamics with geo-targeted social media messages. Big Data & Society, 3(1). https://doi.org/10.1177/2053951716652914

Tsou, M.-H., Jung, C.-T., Allen, C., Yang, J.-A., Gawron, J.-M., Spitzberg, B. H., & Han, S. Y. (2015). Social Media Analytics and Research Test-bed (SMART Dashboard) (pp. 1–7). In Proceedings of the 2015 International Conference on Social Media & Society. https://doi.org/10.1145/2789187.2789196

Han, S. Y., Tsou, M.-H., & Clarke, K. C. (2015). Do Global Cities Enable Global Views? Using Twitter to Quantify the Level of Geographical Awareness of US Cities. Plos One, 10(7), e0132464. https://doi.org/10.1371/journal.pone.0132464

Nagel, A. C., Tsou, M.-H., Spitzberg, B. H., An, L., Gawron, M., Gupta, D. K., … Sawyer, M. H. (2013). The complex relationship of realspace events and messages in cyberspace: case study of influenza and pertussis using tweets. Journal of Medical Internet Research, 15, e237. https://doi.org/10.2196/jmir.2705

Tsou, M.-H., Yang, J.-A., Lusher, D., Han, S. Y., Spitzberg, B., Gawron, J. M., … An, L. (2013). Mapping social activities and concepts with social media (Twitter) and web search engines (Yahoo and Bing): a case study in 2012 US Presidential Election. Cartography and Geographic Information Science, 40, 337–348. https://doi.org/10.1080/15230406.2013.799738

Tsou, M.-H., Kim, I.-H., Wandersee, S., Lusher, D., An, L., Spitzberg, B., … Han, S. Y. (2013). Mapping ideas from cyberspace to realspace: visualizing the spatial context of keywords from web page search results. International Journal of Digital Earth, 7(4), 316–335. https://doi.org/10.1080/17538947.2013.781240

Ye, F., Shi, X., Wang, S., Liu, Y., & Han, S. Y. (2011). Spherical interpolation over graphic processing units (pp. 38–41). Proceedings of the ACM SIGSPATIAL Second International Workshop on High Performance and Distributed Geographic Information Systems. https://doi.org/10.1145/2070770.2070777