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Predicting risk of arrhythmias and sudden cardiac death: There's a computer model for that

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Dec. 13, 2012 — A computer model of the heart wall predicted risk of irregular heart rhythms and sudden cardiac death in patients, paving the way for the use of more complex cardiac models to calculate the consequences of genetic, lifestyle and other changes to the heart.

Authors of the new study, published in the Journal of the American College of Cardiology, say this is the first report of cardiac modeling being used as an arrhythmic risk predictor for patients.

"This is a strong proof-of-principle study showing that computer simulation can be used to predict risk of cardiac arrhythmias, " said Coeli M. Lopes, Ph.D., lead study author and assistant professor at the Aab Cardiovascular Research Institute at the...

Eating or spending too much? Blame it on social networking sites

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Dec. 11, 2012 — Participating in online social networks can have a detrimental effect on consumer well-being by lowering self-control among certain users, according to a new study in the Journal of Consumer Research.

"Using online social networks can have a positive effect on self-esteem and well-being. However, these increased feelings of self-worth can have a detrimental effect on behavior. Because consumers care about the image they present to close friends, social network...

Social ties help drive user content generation that leads to online ad revenue growth

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Dec. 11, 2012 — A research study on online social networks reveals that networking sites can drive advertising revenue by encouraging the density of social ties, or boosting the level of friendship or social connections between users. According to the findings, in a forthcoming paper in Management Science, more connected users prompt increases in visitation and browsing on the site, which helps stimulate online advertising revenue growth.

The research co-authored by Scott...

Basketball as a statistical network

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This is a weighted graph of ball transitions across two games for the (a) Bulls, (b) Cavaliers, (c) Celtics and (d) Lakers. Red edges represent transition probabilities. Player nodes are sorted by decreasing degrees clockwise from the left. The thicker the red line, the more frequently that pass occurs during play. (Credit: Photo by: School of Life Sciences)

Dec. 11, 2012 — What started out as a project to teach undergraduate students about network analysis, turned...

Device helps children with disabilities access tablets

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The current prototype of the Access4Kids device includes three force-sensitive resistors that measure pressure and convert it into a signal that instructs the tablet. (Credit: Georgia Tech)

Dec. 11, 2012 — Imagine not being able to touch a touch-screen device. Tablets and smartphones -- with all their educational, entertaining and social benefits -- would be useless.

Researchers at Georgia Tech are trying to open the world of tablets to children whose...