Wikipedia³

April 28, 2006

Wikipedia³ is a conversion of the English Wikipedia into RDF. It’s a monthly updated dataset containing around 47 million triples. The creation of the dataset is motivated by several factors, one being the desire to have more real-world RDF datasets of reasonable size. Wikipedia assembles a wealth of information created and maintained by people all over the globe – opening up that rich pool of data or even only a small part of it to the semantic web seems like a worthy pursuit. The Wikipedia³ dataset currently combines structural information like link and category relationships with basic per-page metadata. The dataset is based on the Wikimedia dump of the English Wikipedia (enwiki, currently from 2006-03-26) and consists of roughly 47 million triples (47’054’407). We provide Wikipedia³ in all major RDF serialization formats: RDF/XML, Turtle and N-Triples.

Site – http://labs.systemone.at

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A view of the universe before the big bang

April 28, 2006

WHAT happened before the big bang? Cosmologists have long speculated that a universe much like ours could have collapsed in a big crunch and then bounced back into the universe we know. Now a theory that tries to reconcile the incompatible theories of general relativity and quantum physics has provided the first physically plausible model of how this could have happened. General relativity explains gravity as being caused by distortions in the fabric of space-time. But physicists have struggled to also explain gravity in terms of quantum mechanics, leaving it the only force that still lacks a clear quantum description.

Site – http://www.newscientistspace.com


Software lets programmers code hands-free

April 28, 2006

A new speech recognition tool promises to let programmers write clean code without ever having to lay a finger on their keyboard. The tool, called VoiceCode, has been developed to help programmers with repetitive strain injury (RSI). This is a common affliction for people who spend a lot of time using a keyboard or mouse and causes pain in muscles, tendons and nerves in a sufferer’s arms and back. Some estimates suggest 22% of all US computer programmers, or 100,000 people, suffer from the condition.

Site – http://www.newscientisttech.com


‘Starquake’ explosion rips neutron star open

April 28, 2006

Astronomers have measured the thickness of the crust of a neutron star for the first time. The technique, which involves studying how the dense stellar corpse reverberates during a “starquake”, may one day reveal the nature of the exotic matter thought to lie at the star’s core. Neutron stars form when stars up to 40 times the mass of the Sun explode at the end of their lives and leave behind super-dense, spinning corpses. The corpses are thought to be made of neutrons, although their incredible densities have led some researchers to propose their centres contain a state of matter found nowhere else in the universe.

Site – http://www.newscientistspace.com


A great day for 3D

April 28, 2006

Last month we told you that @Last Software had joined the Google fold. Today we’re releasing Google SketchUp, a free version of our 3D modeling software, which makes our long-time vision of making 3D accessible to everyone a reality. We’re still offering SketchUp Pro 5 for design professionals like architects, designers, builders, art directors and game developers. Both Google SketchUp and SketchUp Pro 5 enable you to place models in Google Earth; Pro users get some additional features.

Site – http://googleblog.blogspot.com


Micro-pump is cool idea for future computer chips

April 28, 2006

Purdue University engineers have developed a “micro-pump” cooling device small enough to fit on a computer chip that circulates coolant through channels etched into the chip. “Our goal is to develop advanced cooling systems that are self-contained on chips and are capable of handling the more extreme heating in future chips,” said Suresh Garimella, director of Purdue’s Cooling Technologies Research Center. The prototype chip contains numerous water-filled micro-channels, grooves about 100 microns wide. The channels are covered with a series of hundreds of electrodes that receive varying voltage pulses in such a way that a traveling electric field is created in each channel. The traveling field creates ions, which are dragged along by the moving field, causing the water to flow and inducing a cooling action.

Site – http://www.kurzweilai.net


Japanese researcher shows robot legs that could replace wheelchairs

April 28, 2006

A Japanese researcher demonstrated in Tokyo Wednesday a pair of robotic legs that can negotiate stairs and could eventually find use as a wheelchair substitute. “Elderly people using wheelchairs cannot get up and down stairs,” said Atsuo Takanishi, an engineering professor at Tokyo’s Waseda University. “We wanted to create a robot that could do that and walk around rough surfaces.”

Site – http://mdn.mainichi-msn.co.jp