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Monthly Archives: February 2011
Cornelius Boots – Clubber Lang
Clubber Lang by Cornelius Boots from the album SC100 (also has Jens’ your beat kicks back like death … did you know that song’s a cover?)
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Tagged bass clarinet, Clubber Lang, Cornelius Boots, Mr. T, music, Racebannon, Rocky Balboa, Rocky III, Secretly Canadienne
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The radiolab story “It’s Alive” made vivid the claim of Geoffrey West and Luis Bettencourt that a city’s size determines how fast people walk in that city.
West & Bettencourt have written that people earn more in large cities, waste less, file more patents, and commit more crimes — and that city size is the main determinant of all these things.
The charming Cosma Shalizi has recently published a 15-page paper that rebuts them. From the abstract:
Re-analysis of the gross economic production and personal income for cities in the United States, however, shows that the data cannot distinguish between power laws and other functional forms … and that size predicts relatively little of the variation between cities.
The striking appearance of scaling in previous work is largely artifact of using extensive quantities (city-wide totals) rather than intensive ones (per-capita rates).
(Sorry if that’s hard to read. Horizontal axis = log( city population ). Vertical axis = pedestrian speed in m/s, give or take a standard dev. Solid & dashed lines are two fits proposed by Bettencourt & West.
Radiolab got it wrong
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Tagged Bayesian, heroes, long reads, math, mathematics, maths, news, nonparametric regression, power laws, scaling, science, statistics
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Linear combinations of eigenfaces — images like the above — are the cheapest way to store and search photos of faces. Like if you want to computer analyse the faces of everyone at the Superbowl and see if there’s a … Continue reading
Eigenstuff
Imagine you have a small collection of things {…}. You take linear combinations (in the spirit of “When Doves Cry inside a Convex Hull”) of them, making varied and interesting combinations that explore — even span — a “space”. Maybe it’s the … Continue reading
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Tagged education, eigenfaces, eigenfunction, eigengraph, eigenmode, eigenstate, eigenvectors, math, mathematics, maths, spaces
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Plum Creek Timber Company is organized as a profit-making business, not as a charity. If Montana citizens want Plum Creek to do things that would diminish its profits, it’s their responsibility to get their politicians to pass and enforce laws … Continue reading
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Tagged business, economics, environment, heroes, Jared Diamond, Montana, the law
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It’s only been about 150 years that humans have had a unified vision of physics and chemistry. It’s only been about 100 years that humans have had a unified vision of biology and chemistry. It’s only been about 50 years that humans have been able to travel by airplane. Pretty cool, living in the modern age. Hooray, science.
Were Atoms Real?
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Tagged education, history, history of science, science, tech
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dafi kühne Woodtype Now! (Source: http://www.woodtype-now.ch/#surface)
The wealth required by nature is limited and is easy to procure; but the wealth required by vain ideals extends to infinity. Epicurus, Principal Doctrines, 300 B.C.
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Tagged business, Celsus, economics, education, Epicureanism, Epicurus, heroes, history, philosophy, startups, utility, utility theory, wealth
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