منابع مشابه
The ant odometer: stepping on stilts and stumps.
Desert ants, Cataglyphis, navigate in their vast desert habitat by path integration. They continuously integrate directions steered (as determined by their celestial compass) and distances traveled, gauged by as-yet-unknown mechanisms. Here we test the hypothesis that navigating ants measure distances traveled by using some kind of step integrator, or "step counter." We manipulated the lengths ...
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There are thousands of asteroids in near-Earth space and millions in the Main Belt. They are diverse in physical properties and composition and are time capsules of the early solar system. This makes them strategic locations for planetary science, resource mining, planetary defense/security and as interplanetary depots and communication relays. Landing on a small asteroid and manipulating its s...
متن کاملHMM Tagging on Coherent vs. Nonsense Text
Linguists would very much like to know whether the two are the same or at least whether the latter subsumes the former. A partial answer, no, is given by the fact that HMM-taggers have not yet been found that tag 100%. The discrepancy could be non-existent (but not yet shown) or could be due to inherent limitations in HMM:s (a question which could in principle be resolved by intractable amounts...
متن کاملNeuro Nonsense
No one disputes that male and female brains are different or that males and females differ in their accomplishments. But are these two facts related? A few years ago Harvard President Larry Summers suggested that the answer is yes. He proposed that innate brain differences help to account for the dearth of successful women in science, provoking much heated debate. Reporters called it the story ...
متن کاملNonsense-mediated decay of ash1 nonsense transcripts in Saccharomyces cerevisiae.
Nonsense-mediated mRNA decay (NMD) performs two functions in eukaryotes, one in controlling the expression level of a substantial subset of genes and the other in RNA surveillance. In the vast majority of genes, nonsense mutations render the corresponding transcripts prone to surveillance and subject to rapid degradation by NMD. To examine whether some classes of nonsense transcripts escape sur...
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ژورنال
عنوان ژورنال: Index on Censorship
سال: 2006
ISSN: 0306-4220,1746-6067
DOI: 10.1080/03064220600903166