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aries1988 : computer   11

Finding Lena, the Patron Saint of JPEGs

About six months later, a copy of the issue turned up at the University of Southern California’s Signal and Image Processing Institute, where Alexander Sawchuk and his team happened to be looking for a new photograph against which to test their latest compression algorithm—the math that would make unwieldy image files manageable. Lena’s glossy centerfold, with its complex mixture of colors and textures, was the perfect candidate. They tore off the top third of the spread, ran it through a set of analog-to-digital converters, and saved the resulting 512-line scan to their Hewlett-Packard 2100.

as she told me her life story, recalling her trips from America to Sweden, her marriages and jobs, the lives of her children and grandchildren, it became abundantly clear that the Playboy episode and its aftermath is a curious footnote, a part of her life that she has been largely excluded from, if only because no one thought to tell her very much about it.
controversy  female  technology  image  computer  history  model  story  sweden 
february 2019 by aries1988
Pourquoi et comment le monde devient-il numérique ?
Entretien avec Gérard Berry, auteur de « L'Hyperpuissance de l'informatique » (Odile Jacob, 2017).
numeric  information  computer  book  français  teaching  podcast 
march 2018 by aries1988
Crash: how computers are setting us up for disaster | Tim Harford

The psychologist James Reason, author of Human Error, wrote: “Manual control is a highly skilled activity, and skills need to be practised continuously in order to maintain them. Yet an automatic control system that fails only rarely denies operators the opportunity for practising these basic control skills … when manual takeover is necessary something has usually gone wrong; this means that operators need to be more rather than less skilled in order to cope with these atypical conditions.”

Bonin seemed nervous. The slightest hint of trouble produced an outburst of swearing: “Putain la vache. Putain!” – the French equivalent of “Fucking hell. Fuck!” More than once he expressed a desire to fly at “3-6” – 36,000 feet – and lamented the fact that Air France procedures recommended flying a little lower.

In any case, Bonin silently retook control of the plane and tried to climb again. It was an act of pure panic. Robert and Dubois had, perhaps, realised that the plane had stalled – but they never said so. They may not have realised that Bonin was the one in control of the plane. And Bonin never grasped what he had done. His last words were: “But what’s happening?”
airplane  airline  accident  psychology  computer  technology  human  error 
october 2016 by aries1988
The AI Revolution: The Road to Superintelligence
Currently, the world’s fastest supercomputer, China’s Tianhe-2, has actually beaten that number, clocking in at about 34 quadrillion cps. But Tianhe-2 is also a dick, taking up 720 square meters of space, using 24 megawatts of power (the brain runs on just 20 watts), and costing $390 million to build. Not especially applicable to wide usage, or even most commercial or industrial usage yet.

The brain’s neurons max out at around 200 Hz, while today’s microprocessors (which are much slower than they will be when we reach AGI) run at 2 GHz, or 10 million times faster than our neurons. And the brain’s internal communications, which can move at about 120 m/s, are horribly outmatched by a computer’s ability to communicate optically at the speed of light.

when it hits the lowest capacity of humanity—Nick Bostrom uses the term “the village idiot”—we’ll be like, “Oh wow, it’s like a dumb human. Cute!”
numbers  ai  comparison  brain  computer 
august 2016 by aries1988
一百年后,人类社会会如何评价比尔·盖茨? - Arthur Tang 的回答 - 知乎
portrait  leader  pc  computer  critic  opinion  reading 
may 2016 by aries1988
Edsger W. Dijkstra - Wikiquote
FORTRAN's tragic fate has been its wide acceptance, mentally chaining thousands and thousands of programmers to our past mistakes.
computer  people  programming  quotes  fortran 
march 2015 by aries1988

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