منابع مشابه
Congenital HIV and Childhood AIDS
HIV infection in young children most commonly arises as a result of mother-to-child transmission (MTCT). It is thought that only 1.5-2% of MTCT occurs transplacentally during pregnancy. The vast majority occurs due to maternofetal transmission of blood during parturition or postnatal breast-feeding. A negative maternal HIV test at booking does not preclude neonatal infection maternal infection ...
متن کاملMillions of 'snips' will harm millions of men.
To the Editor: No one knows how many people die due to HIV-related causes in South Africa every year. According to the latest statistical release, HIV is the 9th leading underlying cause of death in the country.1 This is hard to believe. Research has shown that only about 25% of all deaths related to HIV are notified as such2 – either ‘HIV’ as an underlying or contributing cause of death is lef...
متن کاملOn Millions of Cores ∗
Petascale parallel computers with more than a million processing cores are expected to be available in a couple of years. Although MPI is the dominant programming interface today for large-scale systems that at the highest end already have close to 300,000 processors, a challenging question to both researchers and users is whether MPI will scale to processor and core counts in the millions. In ...
متن کاملMining millions of metaphors
One of the first decisions made in any research concerns the selection of an appropriate scale of analysis – are we looking out into the heavens, or down into atoms? To conceive a digital library as a collection of a million books may restrict analysis to only one level of granularity. In this paper we examine the consequences and opportunities resulting from a shift in scale, where the desired...
متن کاملEnsembles of millions of microbots
This paper is submitted to Invited Session: New Trends in Modular Robotics. Abstract— Taking the inevitability of micron-scale manufacturing as a starting point, we present claytronics, a modular robotics system designed to scale to millions of cooperating, sub-millimeter scale units. The goal is for the system to act as a coherent mass and thereby mimic, with high-fidelity and in 3dimensional ...
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ژورنال
عنوان ژورنال: BMJ
سال: 2006
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.332.7544.748-a