منابع مشابه
An Attack on the Last Two Rounds of MD4
In (RiveSO] the MD4 message digest algorithm was introduced taking an input message of arbitrary length and producing an output 128-bit message digest. It is conjectured that it is computationally infeasible to produce two messages having the same message digest, or to produce any message having a given prespecified target message. In this paper it is shown that if the three round MD4 algorithm...
متن کاملOn Cellular Darwinism: Mitochondria
The significant role of mitochondria within cells is becoming increasingly clear. This letter uses the NKCS model of coupled fitness landscapes to explore aspects of organelle-nucleus coevolution. The phenomenon of mitochondrial diversity is allowed to emerge under a simple intracellular evolutionary process, including varying the relative rate of evolution by the organelle. It is shown how the...
متن کاملThe Evolution of Darwinism
W hen biologists refer to the theory of evolution nowa days, they are usually think ing not of Charles Darwin'S original statement of the theory but of a modi fied and expanded version of Darwin ism that took shape in the 1930's and 1940's. First known as the Neo-Dar winian theory and later as the synthet ic theory, it affirmed the fundamental tenets of Darwinism. It held that evo lution...
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ژورنال
عنوان ژورنال: Nature
سال: 1872
ISSN: 0028-0836,1476-4687
DOI: 10.1038/006237a0