ScienceDaily: Computers & Math News

How central are online social networks to our lives? Posted: 26 Feb 2015 09:24 AM PST Social networks such as Facebook, LinkedIn and Twitter play an increasingly central role in our lives. Centrality is also an important concept in the theory of social networks. Centrality of an individual, called a "node" in network theory, measures its relative importance within a network. Researchers have now studied the problem of dynamics and evolution of node's centrality.

Virtual patient: Avatar shows emotions as he talks to med students Posted: 25 Feb 2015 12:16 PM PST The avatars in the Virtual Patient Project give medical students life-like practice in interviewing patients, delving into health histories and narrowing possible diagnoses. These avatars were created to not just talk to students, but to show emotions in their facial expressions.