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  • 1995-1999  (10)
  • 1990-1994  (6)
  • 1980-1984  (4)
  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Macmillan Magazines Ltd.
    Nature 398 (1999), S. 367-368 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The prisoner's dilemma is a classic of game theory in which acting for individual advantage is pitted against acting for collective benefit. An example has been identified among clones of a virus that infects bacteria. A virus is a natural-born cheat that makes its living by exploiting the ...
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In HIV-1 infection, there are strong CTL responses to several epitopes, and evidence is mounting that CTL are important in controlling the virus18"23. HIV persistence and disease progression may rely partly on evasion of CTL responses by antigenic variation. We have ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Macmillan Magazines Ltd.
    Nature 392 (1998), S. 439-441 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Talk of the ‘higher principles of life’ has a ring of vitalism to it. So it must have taken Michael Polanyi considerable pluck to argue in 1968, at the onset of the spectacular advances of biochemistry and molecular genetics, that life has an ‘irreducible structure’. He ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Macmillan Magazines Ltd.
    Nature 393 (1998), S. 573-577 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Darwinian evolution has to provide an explanation for cooperative behaviour. Theories of cooperation are based on kin selection (dependent on genetic relatedness),, group selection and reciprocal altruism. The idea of reciprocal altruism usually involves direct reciprocity: repeated encounters ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 362-363 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Late in life, the mathematician Kurt Godel confided that he felt the Institute for Advanced Study at Princeton University had been paying him too much. On the face of it, he had a case: after his appointment as professor, he never lectured or held a seminar, and he published almost nothing. But the ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Annals of operations research 37 (1992), S. 217-228 
    ISSN: 1572-9338
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Notes: Abstract In many cases, the orbits of deterministic systems displaying highly irregular oscillations yield smoothly converging time averages. It may happen, however, that these time averages do not converge and themselves display wild oscillations. This is analyzed for heteroclinic attractors and hyperbolic strange attractors.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 362 (1993), S. 669-670 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] STARTING with the Necker-cube-like ambiguity of its title and going right up to a discussion of alternative interpretations quantum reality in the final chapter, Reality Rules invites one continuously to shift one's position. This plea for mobility is characteristic of John Casti's book. It is ...
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 359 (1992), S. 774-774 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN 1902, the Russian anarchist Kropotkin wrote a book on mutual aid in biological communities, feeling that Darwin's disciples tended to overlook its prevalence. This is no longer the case: altruism in a competitive world of repli-cators is now a favourite issue among darwinists, and the ...
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 250-253 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The simple 'prisoner's dilemma' is a game with two players, each having two options, C (to cooperate) and D (to defect). We use Axelrod's payoff values: if both players cooperate, both obtain # = 3 points; if both defect, each receives P = l point; if one player defects and the ...
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 378 (1995), S. 453-453 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT is the way of fashion to go out of fashion. The new field of complexity seems to experience the same fate as its forerunner, chaos. After a few years of hope and hype, and a remarkable success on the public relations front, it is hitting lean times. A Scientific American suddenly turned ...
    Type of Medium: Electronic Resource
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