sneakcjj - Slashdot User

Submission + - Gaming foursquare with 9 lines of Perl (uic.edu)

Submitted by caffeinemessiah on Friday August 20, 2010 @05:12PM

caffeinemessiah writes: With the recent launch of Facebook Places, the rise to prominence of Foursquare and GoWalla, and articles in the New York Times about the increasing popularity of "checking in" to locations using GPS-enabled mobile phones, a number of businesses are wondering how to reward frequent patrons. But exactly how susceptible are these "location based services" to being abused? A researcher at the University of Illinois at Chicago shows how easily Foursquare can be gamed in 9 Perl statements, and invites readers to submit more succinct versions of the code to game the system.

The Perfect Way To Slice a Pizza 282

Posted by samzenpus on Tuesday December 15, 2009 @01:09PM from the equal-distribution-of-the-pie dept.

iamapizza writes "New Scientist reports on the quest of two math boffins for the perfect way to slice a pizza. It's an interesting and in-depth article; 'The problem that bothered them was this. Suppose the harried waiter cuts the pizza off-center, but with all the edge-to-edge cuts crossing at a single point, and with the same angle between adjacent cuts. The off-center cuts mean the slices will not all be the same size, so if two people take turns to take neighboring slices, will they get equal shares by the time they have gone right round the pizza — and if not, who will get more?' This is useful, of course, if you're familiar with the concept of 'sharing' a pizza."

Submission + - The Death of High Fidelity 1

Submitted by

Ponca City, We Love You

on Friday December 28, 2007 @10:35AM

Ponca City, We Love You writes: "Rolling Stone has an interesting story on how record producers alter the way they mix albums to compensate for the limitations of MP3 sound. Much of the information left out during MP3 compression is at the very high and low ends, which is why some MP3s sound flat. Without enough low end, "you don't get the punch anymore. It decreases the punch of the kick drum and how the speaker gets pushed when the guitarist plays a power chord." The inner ear automatically compresses blasts of high volume to protect itself, so we associate compression with loudness and human brains have evolved to pay particular attention to loud noises, so compressed sounds initially seem more exciting. But the effect doesn't last. After a few minutes, constant loudness grows fatiguing to the brain. Though few listeners realize this consciously, many feel an urge to skip to another song. "We're conforming to the way machines pay music. It's robots' choice. It used to be ladies' choice — now it's robots' choice," says Steely Dan frontman Donald Fagen."

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