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* Much of the material in this paper arises from the collaborative work done with Nicolas Jonard, and owes much to him. I also acknowledge the very helpful comments of Muge Ozman and encouraging words of Franco Malerba. Much of modern micro-economics is built from the starting point of the perfectly competitive market. In this model there are an infinite(More)
We present a measurement of the time-dependent CP-violating (CPV) asymmetries in B0-->K(0)(S)pi(0) decays based on 124x10(6) Upsilon(4S)-->BB decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. In a sample containing 122+/-16 signal decays, we obtain the magnitudes of the direct CPV asymmetry(More)
helpful comments in different stages of the work. The usual disclaimers apply. ABSTRACT: This paper aims to understand some of the mechanisms which dominate the phenomenon of knowledge diffusion in the process that is called 'social learning'. We examine how knowledge spreads in a network in which agents interact by word of mouth. The social network is(More)
We present an updated measurement of time-dependent CP-violating asymmetries in neutral B decays with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. This result uses an additional sample of Upsilon(4S) decays collected in 2001, bringing the data available to 32 x 10(6) BB macro pairs. We select events in which one neutral B meson is fully(More)