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Businesses

Submission + - Pandora Shares Artist Payment Figures (pandora.com)

An anonymous reader writes: Today in a blog post, Pandora has shared some details of the fees they pay to musical artists for playing songs over their music streaming service. Over 2,000 different artists pull in $10,000 or more in the next year, and 800 will get paid over $50,000. They provided a few specific examples as well. Grupo Bryndis, who has a sales rank on Amazon of 183,187, is on track to receive $114,192. A few earners are getting over $1 million annually, such as Coldplay and Adele. 'Drake and Lil Wayne are fast approaching a $3 million annual rate each.' The post segues into a broader point about the age of internet radio: 'It's hard to look at these numbers and not see that internet radio presents an incredible opportunity to build a better future for artists. Not only is it bringing tens of millions of listeners back to music, across hundreds of genres, but it is also enabling musicians to earn a living. It's also hard to look at these numbers, knowing Pandora accounts for just 6.5% of radio listening in the U.S., and not come away thinking something is wrong. ... Congress must stop the discrimination against internet radio and allow it to operate on a level playing field, under the same rules as other forms of digital radio.'
Businesses

Submission + - Mysterious Algorithm Was 4% of Trading Activity Last Week (cnbc.com) 1

concealment writes: "A single mysterious computer program that placed orders — and then subsequently canceled them — made up 4 percent of all quote traffic in the U.S. stock market last week, according to the top tracker of high-frequency trading activity. The motive of the algorithm is still unclear.

The program placed orders in 25-millisecond bursts involving about 500 stocks, according to Nanex, a market data firm. The algorithm never executed a single trade, and it abruptly ended at about 10:30 a.m. ET Friday."

Graphics

Submission + - Free program makes computer graphics more realistic (cornell.edu)

wazlaf writes: Computer-generated images can be a little more realistic — and a lot cheaper to make — with an open-source rendering program created by Cornell graduate student Wenzel Jakob. A major new version of Mitsuba was just released. "What really is new is that Mitsuba implements a group of rendering algorithms that traditionally have been horribly complicated," Jakob said. Together with improvements developed at Cornell University, these can simulate the complex behavior of light traveling through glossy materials such as brushed metal or glass.

Submission + - Major redesign of the Mitsuba renderer goes public

wazlaf writes: After a two years of internal development and a whopping 5MB source code diff, a completely redesigned version of the Mitsuba renderer was just released to the public.

Mitsuba is a modular physically-based rendering engine which features an interactive preview and many state-of-the art rendering algorithms that can be tweaked and combined in endless ways. One of the highlights of this release is that it includes the first openly available implementation of the original Metropolis Light Transport algorithm that works correctly. The release announcement contains a full listing of all new features. Example scenes, the source, and binaries for all major platforms are provided on the download page.

Comment Re:Iron Man's Suit Defies Physics -- Mostly (Score 2, Interesting) 279

Hydrogen peroxide powered rocket packs fly for around 30 seconds, because they have a specific impulse of around 125, meaning that one pound of propellant can make 125 pound-seconds of thrust, meaning that it takes about two pounds of propellant for every second you are in the air. Mass ratios are low for anything strapped to a human, so the exponential nature of the rocket equation can be safely ignored.

A pretty hot (both literally and figuratively) bipropellant rocket could manage about twice the specific impulse, and you could carry somewhat heavier tanks, but two minutes of flight on a rocket pack is probably about the upper limit with conventional propellants.

However, an actual jet pack that used atmospheric oxygen could have an Isp ten times higher, allowing theoretical flights of fifteen minutes or so. Here, it really is a matter of technical development, since jet engines have thrust to weight ratios too low to make it practical. There is movement on this technical front, but it will still take a while.

John Carmack

Comment Re:Picture Quality... (Score 3, Informative) 221

I don't understand all the excitement about Irrlicht - wile it is surely an OK 3D Engine, it lags just so much behind in terms of what's possible with current 3D Hardware. If you are looking for something more advanced, have a look at OGRE. It does decent stencil shadows, is also independent of the underlying rendering API and it is used in many commercial and open source games.

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