We study the effects of aggregation on four different cases of nonlinear spatial gravity models. We present some theoretical results on the relationship between the mean flows at an aggregated level and the mean flow at the disaggregated level. We then focus on the case of perfect aggregation...

This paper investigates the price for contingent claims in a dual expected utility theory framework, the dual price, considering arbitrage-free nancial markets. A pricing formula is obtained for contingent claims written on n underlying assets following general Itô processes and without any...

Nel presente articolo si propone un nuovo modello per l'evoluzione del prezzo a pronti dell'elettricità basato sull'ipotesi che esistano due regimi diversi per la sua evoluzione: uno "normale" in cui i prezzi si discostano poco dai fattori che determinano il costo di produzione ed uno...

L'insider trading è configurato nella dottrina economica come una tipica asimmetria informativa ex ante; tale fenomeno prevede che la superiorità informativa di una parte a scapito dell'altra esiste ancora prima del verificarsi di un dato intervento. Solitamente l'insider trading viene visto ed...

This paper studies the effects of financial liberalization and banking crises on growth. It shows that financial liberalizations spurns on average economic growth. Banking crises are harmful for growth, but to a lesser extent in countries with oper financial system and good institutions. The...

This paper analyses the portfolio selection problem under the non-expected utility theory. We assume that the decision maker ranks the alternatives by using a specific Dual Expected Utility. This function allows returns which are less than or equal to a fixed benchmark to be weighted in a...

The aim of this paper is to present a two-factor pricing model for convertible bonds, paying particular attention to the impact of volatility in the valuation process as suggested in previous studies. The model here proposed is discrete and the sources of uncertainty are the risk-free spot rate...

In this paper a dynamic stochastic model is used to simulate the matching process between skills demand and supply in a segmented labor market of a typical developong area where labor market frictions are pervasive. We address the issue of the emergence of a "bad" outcome i.e. equilibrium...