Raimondello Orsini

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Auroras are caused by accelerated charged particles precipitating along magnetic field lines into a planetary atmosphere, the auroral brightness being roughly proportional to the precipitating particle energy flux. The Analyzer of Space Plasma and Energetic Atoms experiment on the Mars Express spacecraft has made a detailed study of acceleration processes(More)
We present a neural network methodology for learning game-playing rules in general. Existing research suggests learning to …nd a Nash equilibrium in a new game is too di¢ cult a task for a neural network, but says little about what it will do instead. We observe that a neural network trained to …nd Nash equilibria in a known subset of games, will use(More)
We describe a first experiment on whether product complexity affects competition and consumers in retail markets. We are unable to detect a significant effect of product complexity on prices, except insofar as the demand elasticity for complex products is higher. However, there is qualified evidence that complex products have the potential to induce(More)
This paper presents a neural network model developed to simulate the endogenous emergence of bounded-rational behavior in normal-form games. There exists an algorithm which, if learnt by a neural network, would enable it to perfectly select Nash equilibria in never before seen games. However, …nding this algorithm is too complex a task for a biologically(More)
We analyse product and process innovations in a monopoly model with vertical differentiation. The incentive towards both kinds of innovation is always larger under social planning than under monopoly. Therefore, the comparison between the two regimes' welfare performance should account for the possibility that the planner and the monopolist adopt different(More)
We investigate the optimal R&D portfolio of a single-product mo-nopolist investing in cost-reducing activities accompanied by efforts improving the quality of its product. There emerges that the firm's relative incentives along the two directions are conditional upon market affluency, measured by consumers' willingness to pay for quality, and R&D efforts(More)
We conduct an artefactual field experiment to compare the individual preferences and propensity to cooperate of three pools of subjects: Undergraduate students, temporary workers and permanent workers. We find that students are more selfish and contribute less than workers. Temporary and permanent contract workers have similar other-regarding preferences(More)