Dangling Conversations

Colour commentary on the world we live in

Block thing walking

Posted 24 Jul, 2006 at 18:14 by matt in /Science | Permanent link

Via Good Math, Bad Math: want a screen-saver that leans how to walk? My fellow OS X users should check out breveCreatures, developed in an A-Life simulation package called breve.

It's an evolutionary simulation: twenty-five critters made out of between two and many blocks (I've never seen one with more than eleven parts) are dropped onto a featureless plane, and each one in turn tries to walk (or, well, perambulate). Success is defined as maximum distance from the starting point; the more successful critters breed to populate the next generation, the less succcessful die out. Pretty standard genetic-algorithms type stuff.

The soon-to-be-released game Spore that Blue wrote about a while ago plays around with evolutionary ideas, but (from what I've read) does so in a particularly unscientific way. It's got player-designed organisms and a "march of progress" from simple aquatic creatures to planetary civilizations; those are great for a strategy game, but pretty much entirely against the spirit of the modern understanding of evolution. breveCreatures functions nicely as a demonstration of those same principles.

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Is your home wired enough?

Posted 22 Jul, 2006 at 17:40 by kael in /Technical | Permanent link

Your laundry machines beg to differ.

(From wired.com)

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Airplane Boarding Algorithms

Posted 10 Jul, 2006 at 00:30 by kael in /Math | Permanent link

Ever wonder what the most efficient algorithm is for arranging passengers boarding an airplane? You're not alone! This paper is a mathematical analysis of the topic of airplane boarding algorithms. Well, two of them.

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Nice Bed

Posted 03 Jul, 2006 at 22:48 by kael in /Science | Permanent link

I try not to talk about $WORK[0] on here anymore, and this sort of qualifies, but in an interesting way.

And I love the 2001 reference.

[x-posted to my LJ.]

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Blue has been known to toss a disc around a field from time to time, and thinks that you should as well. He lives either on the Internet or in Toronto, depending on your perspective. Ask him no questions and there's a good chance he'll tell you no lies. [Site]

Brent hosts the box from which we dangle our conversations, for which we are all eternally grateful. Gratitude is most easily expressed in small bills. Formerly a pawn of the Evil Empire (or maybe a Knight), he has gone over the wall and now toils at a small computer game company in Alberta that no one except for ten million gamers has ever heard of. [Site]

Kael occasionally gets called "Mike"; mostly by people who don't know him. He cooks, he cleans, he maintains Unix servers... what else could you ask for? Currently a slave to the Man, by which we mean retail sales. He has secret plans, but we can't tell you about them. In fact, we've already said too much. [Site]

Lisa is a recreational therapist without a cause. She entertains dreams of ruling over an empire of scrapbooking. Has a well-deserved reputation for enthusiasm, common sense, and tiredness. Ask her about her teapots, but don't touch them.

Matt is just this guy, you know? A mathematician by training and a layabout by inclination; he currently has an Urban Commuter Campus in the American Midwest convinced that they should pay him for plying these trades. The designer and administrator of this site, which means in a sense this is all his fault. [Site | E-mail]

Sky is a salesman during the day. At night he doesn't bother: his words are like unto those of a god, and you can agree or you can be wrong. Lives in the World of Warcraft, with a sattelite office in Toronto. Known to play games on occasion.

Wendy has never run away to join the circus, but pursuing graduate work in medical imaging is perhaps just as good. She didn't choose her current abode on the basis of proximity to a Toronto Public Library branch, but we wouldn't put it past her. Married to one of the other authors here, but you'll have to read the archives to find out which one. [Site]

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