منابع مشابه
The Online Transportation Problem: On the Exponential Boost of One Extra Server
We present a poly-log-competitive deterministic online algorithm for the online transportation problem on hierarchically separated trees when the online algorithm has one extra server per site. Using metric embedding results in the literature, one can then obtain a poly-log-competitive randomized online algorithm for the online transportation on an arbitrary metric space when the online algorit...
متن کاملBiofuel boost
permafrost). Of the remainder, the vast majority is groundwater, so that just 0.4 per cent of the world's total freshwater is available at the surface as lakes, soil moisture, air humidity, marshes, wetlands, rivers and biomass. And water is proving an increasingly critical component in agricultural activities. Earlier this month, the Chinese government declared an emergency for the first time ...
متن کاملBusiness boost
The efficient development of effective vaccines and therapeutics is perhaps the most challenging of the myriad promises of post-genomic biology. Fortunately, as the list of sequenced bacterial pathogens grows, so does the opportunity to use whole genome sequence as a potentially powerful tool in vaccine development. According to Rino Rappuoli, vice president of vaccine research at Chiron, genom...
متن کاملIcon boost
could have worked. " The scientists hypothesise that interbreeding between our ancestral humans and early chimps created a third, infertile 'hybrid' species, the human equivalent of a mule, the infertile offspring of a horse and donkey. Though incapable of breeding among its own, the hybrid is believed to have survived by mating with its parent human or chimp species, before the two separated t...
متن کاملWinter boost
Over-wintering monarch butterflies in the forests of central Mexico may be looking forward to more secure rest following an announcement by the Mexican government of a budget boost of $4.6 million per year to improve the conditions for the migrant butterflies and for the many often prominent human visitors, and to tackle illegal logging. Conservation officials said that the additional funds for...
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ژورنال
عنوان ژورنال: Nature Reviews Cancer
سال: 2003
ISSN: 1474-175X,1474-1768
DOI: 10.1038/nrc1220