منابع مشابه
Finding the missing link
The discovery of an ancient protein complex reveals the evolutionary relationships between the proteins that help to form vesicles.
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hen endothelial cells adhere to the extracellular matrix protein fibronectin, they can proliferate in response to growth factors. Adhesion to laminin, however, brings their cell cycles to a dead stop. Why? Given that the response depends on the composition of the extracellular matrix, Filippo Giancotti and his colleagues at the Memorial Sloan-Kettering Cancer Center (New York, NY) proposed in 1...
متن کاملThe Missing Link
state-transition relation are mapped onto physical states-types related by a corresponding causal state-transition relation.” (Chalmers, 1994, p. 392) There is a little ambiguity in the two phrasings as to what the exact meaning of “mirrors” is supposed to be. Prima facie one would expect “mirrors” to mean something like “is isomorphic to,” as “mirrors” usually indicates sameness in structure. ...
متن کاملEmotions — The missing link ?
In this paper we present and discuss a conceptual framework to design and construct emotion-based agents. We hypothesize that these agents exhibit a sensori-motor intelligence capable of providing them competence to cope with real, aggressive, and unpredictable environments. We sustain that such intelligence — based on a structured pictoric knowledge representation — can bridge the gap between ...
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ژورنال
عنوان ژورنال: Science
سال: 2002
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.297.5589.1959c