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Online activity grows in a similar pattern to those of real-life networks

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TechAndComputer (Sep. 1, 2011) — The activity of online communities does not grow in line with the number of users, according to a model recently published in the European Physical Journal B.

The Internet has given rise to its own sorting devices. Among these, tagging consists of assigning user-chosen keywords to a piece of information (such as a digital image) to facilitate searches. Lingfei Wu, a researcher at the City University of Hong Kong's...

TechAndComputer (Sep. 1, 2011) — The activity of online communities does not grow in line with the number of users, according to a model recently published in the European Physical Journal B.

The Internet has given rise to its own sorting devices. Among these, tagging consists of...

Record-low error rate for quantum information processing with one qubit

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TechAndComputer (Aug. 31, 2011) — Thanks to advances in experimental design, physicists at the National Institute of Standards and Technology (NIST) have achieved a record-low probability of error in quantum information processing with a single quantum bit (qubit) -- the first published error rate small enough to meet theoretical requirements for building viable quantum computers.

A quantum computer could potentially solve certain problems that...

TechAndComputer (Aug. 31, 2011) — Thanks...

Mobile phone data help track populations during disasters

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TechAndComputer (Aug. 31, 2011) — Mobile phone positioning data can be used to monitor population movements during disasters and outbreaks, according to a study recently published in PLoS Medicine. The study, conducted by Linus Bengtsson and colleagues from the Karolinska Institute, Sweden and Columbia University, USA, finds that reports on the location of populations affected and in need of assistance can be generated within hours of receiving...

TechAndComputer (Aug. 31, 2011) — Mobile...

Graphene's shining light could lead to super-fast Internet

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TechAndComputer (Aug. 30, 2011) — Writing in the journal Nature Communications, a collaboration between the Universities of Manchester and Cambridge, which includes Nobel Prize winning scientists Professor Andre Geim and Professor Kostya Novoselov, has discovered a crucial recipe for improving characteristics of graphene devices for use as photodetectors in future high-speed optical communications.

By combining graphene with metallic...

TechAndComputer (Aug. 30, 2011) — Writing in the...

What was that again? A mathematical model of language incorporates the need for repetition

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TechAndComputer (Aug. 29, 2011) — As politicians know, repetition is often key to getting your message across. Now a former physicist studying linguistics at the Polish Academy of Sciences has taken this intuitive concept and incorporated it into a mathematical model of human communication.

In a paper in the AIP's journal Chaos, Łukasz Dębowski mathematically explores the idea that as humans we often repeat ourselves in an effort to get the story...

TechAndComputer (Aug. 29, 2011) — As...