منابع مشابه
Rejection--more than the eye can see.
n engl j med 353;22 www.nejm.org december 1, 2005 2394 Mukhurjee J, Colas M, Farmer P, et al. Access to antiretroviral treatment and care: the experience of the HIV Equity Initiative, Cange, Haiti: case study. Geneva: World Health Organization, 2003. Accelerating Access Initiative: widening access to care and support for people living with HIV/AIDS: progress report. Geneva: World Health Organiz...
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We propose to “boost” the speed of communication and computation by immersing the computing environment into a medium whose index of refraction is smaller than one, thereby trespassing the speedof-light barrier. The Church-Turing and the Cook-Karp theses, as well as other, more general limits on computation, are under permanent “scrutiny” [cf. e.g., Davis (1958, p 11) or Deutsch (1985, p. 5)] b...
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A very old and simple algorithm for garbage collection gives very good results when the physical memory is much larger than the number of reachable cells. In fact, the overhead associated with allocating and collecting cells from the heap can be reduced to less than one instruction per cell by increasing the size of physical memory. Special hardware, intricate garbage-collection algorithms, and...
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Available constraints on metamorphic reaction rates derived from the study of natural systems are similar to, or slightly lower than, the bulk strain rates measured in the same rocks. Here, we explore whether this apparent relationship is merely coincidence or due to a more fundamental mechanistic link between reaction and strain. Grain boundary migration accommodated dislocation creep (GBMDC) ...
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ژورنال
عنوان ژورنال: Nature
سال: 1986
ISSN: 0028-0836,1476-4687
DOI: 10.1038/323118b0