NATURAL HISTORY FIRST (BUT DON'T STOP THERE)
نویسندگان
چکیده
منابع مشابه
The First Natural History Museum in America.
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The unforgeability of conventional digital signatures is necessarily based on complexity theoretic assumptions, i.e. even the most secure schemes can be broken by an adversary with unexpected computing abilities. Thus we introduce fail-stop signatures: They are as unforgeable as the best conventional signatures, but if a signature is forged nevertheless, the supposed signer can prove the forger...
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OBJECTIVE To examine labor patterns in a large population and to explore an alternative approach for diagnosing abnormal labor progression. METHODS Data from the National Collaborative Perinatal Project were used. A total of 26,838 parturients were selected who had a singleton term gestation, spontaneous onset of labor, vertex presentation, and a normal perinatal outcome. A repeated-measures ...
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متن کاملFirst there was hydrogen.
The history of hydrogen — the element that fills the world as we know it — consists of a most dramatic set of events. Hydrogen and helium atoms emerged a measly 379,000 years after the Big Bang. As the hot, dense plasma of protons, electrons and photons that was the universe began to cool and expand, electrons and protons gathered to form atoms. Four hundred million years later stars — such as ...
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ژورنال
عنوان ژورنال: Evolution
سال: 2011
ISSN: 0014-3820
DOI: 10.1111/j.1558-5646.2011.01367.x