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Recent papers discussing advection-dominated accretion Ñows (ADAF) as a solution for astrophysical accretion problems should be treated with some caution because of their uncertain physical basis. The suggestions underlying ADAF involve ignoring the magnetic Ðeld reconnection in heating of the plasma Ñow, assuming electron heating due only to binary Coulomb collisions with ions. Here we analyze...

Il concetto di autonomia è la principale caratteristica che differenzia la programmazione ad agenti rispetto alla programmazione ad oggetti. Anche se in teoria tale concetto è stato descritto in modo dettagliato, in pratica non sembra essere stato sviluppato appieno. La tesi di questo articolo è che un agente software è autonomo solo se è capace, in un ambiente imprevedibile, complesso, ed ambi...

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