Haohui Chen

TL;DR: It is shown that real and perceived threats, together with physical disaster effects, are directly observable through the intensity and composition of Twitter’s message stream, and suggested that massive online social networks can be used for rapid assessment of damage caused by a large-scale disaster.

TL;DR: It is found that differences in users’ network centrality effectively translate into moderate awareness advantage (up to 26 hours); and that geo-location of users within or outside of the hurricane-affected area plays a significant role in determining the scale of such an advantage.

TL;DR: It is found that cold temperatures, hot temperatures, precipitation, narrower daily temperature ranges, humidity, and cloud cover are all associated with worsened expressions of sentiment, even when excluding weather-related posts.

TL;DR: This work suggests that careful use of the third spatial dimension can resolve visual clutter in complex flow maps, with respect to origin-destination flow data in a global geographic context.

TL;DR: In this article, the authors explore different ways to render world-wide geographic maps in virtual reality (VR) and compare: (a) a 3D exocentric globe, where the user's viewpoint is outside the globe, (b) a flat map (rendered to a plane in VR); (c) an egocentric 3D globe, with the viewpoint inside the globe; and (d) a curved map, created by projecting the map onto a section of a sphere which curves around the user.