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Data Storage

1TB Blu-Ray Compatible Optical Disc Announced 256

Posted by timothy from the many-bytes-many-bits dept.
red_dragon writes "An article on The Register tells the news of an announcement of a new 1TB optical drive and disc that will be backwardly compatible with Blu-ray discs. The technology, developed by Call/Recall in partnership with Nichia, uses a rhodamine-type dye in a 200+-layer recording medium that gives off light when excited by a laser beam, along with a single fluid-filled lens to read multiple layers by varying the amount of fluid to change the focal length. The technology is designed to work with Nichia's blue-violet laser diodes, which are already used in Blu-ray drives."
The Internet

Six Degrees of Wikipedia 296

Posted by kdawson from the finding-the-center dept.
An anonymous reader notes that someone has applied the game Six Degrees of Kevin Bacon to the articles in Wikipedia. Instead of the relation being "in the same film," he used "is linked to by." From the blog post: "We'll call the 'Kevin Bacon number' from one article to another the 'distance' between them. It's then possible to work out the 'closeness' of an article in Wikipedia as its average distance to any other article. I wanted to find the centre of Wikipedia, that is, the article that is closest to all other articles (has minimum [distance])."
Space

Doughnut-Shaped Universe Back In the Race 124

Posted by kdawson from the mmmmm-universe dept.
SpaceAdmiral writes "The once-popular idea that the universe could be small and finite is making a comeback. Many researchers thought that a 'wraparound' universe would mean that distant objects would be seen multiple times in the sky, but new research suggests that a '3-torus' (or 'doughnut universe'), as well as other shapes, could fit our actual observations, particularly the WMAP data."
Java

Scalable Nonblocking Data Structures 216

Posted by kdawson from the don't-fear-the-multi-core dept.
An anonymous reader writes "InfoQ has an interesting writeup of Dr. Cliff Click's work on developing highly concurrent data structures for use on the Azul hardware (which is in production with 768 cores), supporting 700+ hardware threads in Java. The basic idea is to use a new coding style that involves a large array to hold the data (allowing scalable parallel access), atomic update on those array words, and a finite-state machine built from the atomic update and logically replicated per array word. The end result is a coding style that has allowed Click to build 2.5 lock-free data structures that also scale remarkably well."

Comment Re:Nothing new (Score 1) 119

by Marcio82 (#22556116) Attached to: The Economics of Free
Im not sure that a business needs to make money in order for it to survive anymore, all that is needed is the perception that it will one day be worth something and investors will invest, how many companies do you know of dont make any real money, and yet are worth millions? This could be because, a lot of people werent happy with the size of the piece of their pie, and all decided to make the pie bigger, the thing is that now the pie is 50% mirage.

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