United States Department of Housing and Urban Development

WiFi sensing for urban analytics: An open-source R toolkit

WiFi sensing passively captures the WiFi packets that smartphones broadcast, offering continuous, low-cost pedestrian monitoring. The technique has been applied to footfall estimation, transit analysis, and public space studies. However, existing implementations remain tied to in...

Characterizing the Landscape of Loss: A Spatiotemporal Contextual Approach to Measuring U.S. County-Level Depopulation

In recent decades, the United States has experienced substantial changes in population size, composition, and distribution. As growth has slowed, population loss has taken on increased salience, presenting an emerging social, economic, and political challenge and highlighting a n...