of assets with short-selling where there is risk and ambiguity. Agents have Bewley’s incomplete preferences. As an … of the risk adjusted sets of probabilities intersect. The more risk averse, the more ambiguity averse the agents, the …

are necessary when agents are not risk neutral at extreme levels of wealths. It is shown that the more uncertainty averse …The theory of existence of equilibrium with short-selling is reconsidered under risk and ambiguity modelled by risk … averse variational preferences. No-arbitrage conditions are given in terms of risk adjusted priors. A sufficient condition …

some prior. It is shown that the more uncertainty averse and the more risk averse, the more likely are efficient …The theory of existence of equilibrium with short-selling is reconsidered under risk and ambiguity modelled by risk … of the risk adjusted sets of expectations overlap. This condition is necessary if agents are not risk neutral at extreme …

production system. We propose an adaptation of the material requirement planning framework to manage demand uncertainty at each …

We study comparative statics of Nth-degree risk increases, as de ned by Ekern (1980), within a large class of problems … for unambiguous impact of Nth-degree risk increases on optimal decision making. We develop a simple and intuitive approach … to interpret these conditions : novel notions of directional Nth-degree risk aversion that are characterized via …

processing of information affected by non probabilistic uncertainty.We have dealt with two aspects of uncertainty in the field of … forward and tested an audit risk evaluation model based on fuzzy logic which allowed for a linguistic evaluation of the … judgement. However, imperfect data cannot be the only dimension of modelled uncertainty in accounting and controlling. Indeed …