Wednesday, February 3, 2010

the strands of the eclipse


screen cap from Genuine: The Tale of a Vampire
International Center for Advanced Communication Technologies (InterACT) held a landmark videoconference last week to demonstrate new breakthroughs in cross-lingual communication. InterACT director, computer science professor Alex Waibel demonstrated domain-independent, speech-to-speech translation in a lecture, which was simultaneously translated from English to Spanish to German.

identity column...what they mistakenly believed was time...it's all the same the high and the low the pretension and the vulgar...something more subtle than the ordinary meanings of words...

connectome with machine learning, the researchers teach computers to learn by example. They feed their computer electron microscopic images of brain slices and manual tracings of the tangled connections between the neurons. The computer then searches for an algorithm that allows it to imitate human performance.

class-based method dispatch and lexically scoped variables
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Vaclov Smil: Feeding the World: How can we best feed some 10 billion people who will likely inhabit the Earth during the 21st century?

supply-

LAND (km2/per capita)/WATER (m3/per capita)/NUTRIENTS (nitrogen; phosphorus) /PHOTOSYNTHESIS

...in most agroecosystems water is the most limiting growth factor during most years (p39)

...of the roughly 250,000 described higher plants, about 30,000 species are known to be edible, some 7,000 of them have been actually used as food, only 150 have ever become important crops, and only fifteen species produce 90 percent of all food. The three leading cereal crops- wheat, rice, and corn- supply almost two-thirds of all food energy and slightly more than half of all protein derived from plants...(p.52)

demand-
total per capita food energy supply has increased with increasing affluence from less than 2,500 kcal/day to satiation levels between 2,800 and 3,000 kcal/day... (p.250)

LAND- an overwhelmingly vegetarian diet produced by high-intensity cropping would require no more than 700-800 m2/per capita a fairly balanced Chinese diet of the late 1900a- supplying about 2,800 k/cal per day with about 15 percent of this coming from animal foodstuffs...in contrast the Western diet, with large share of meat/dairy, claims up to 4,000 m2/per capita...but much of this is wasted (p 38)
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Manipulation of Rubisco: the amount, activity, function and regulation.....Genetic modification to increase the specificity of Rubisco for CO2 relative to O2 and to increase the catalytic rate of Rubisco in crop plants would have great agronomic importance....

Since photorespiration seems wasteful, it would seem that decreasing the oxygenase/carboxylase ratio of RuBP carboxylase somewhat would be a logical method of reducing photorespiration and increasing net photosynthesis. This has not yet been accomplished. The attempts to do this and the problems that must be surmounted have been reviewed (Hartman and Harpel 1994; Spreitzer 1999). However, some biochemists...

I want to be a force for real good. I want to discover a method so that if I want it to rain, it will start immediately to rain. If one of my friends is ill, I’d like to play a certain song and he’ll be cured. When he’d be broke, I’d bring out a different song and immediately he’ll get all the money he needed. But what these pieces are and what is the road to attain the knowledge of them… that I don’t know. The true powers of music are still unknown, to be able to control them must be, I believe, the power of every musician.


bad character from defetto on Vimeo.




leaf photosynthetic capacity
(i.e., maximal carboxylation rate, Vcmax,
maximal photosynthetic electron transport rate, Jmax,
and dark respiration, Rd)
was estimated

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