In this paper we consider estimation of demand systems with flexible functional forms, allowing an error term with a general conditional heteroskedasticity function that depends on observed covariates, such as demographic variables. We propose a general model that can be estimated either by...

In this paper we provide an alternative approach to analyze the demand for international tourism in the Balearic Islands, Spain, by using a neural network model that incorporates time-varying conditional volatility. We consider daily air passenger arrivals to Palma de Mallorca, Ibiza and Mahon,...

Measures of income inequality based on current income are well known to overstate lifetime income inequality for two reasons: intracohort mobility and the shape of the age-earnings profile. Utilizing the concept of age equivalence scales along with varying assumptions concerning the extent of...

Brand names or trademarks carry incredible economic power and prestige. There is increasing recognition by world bodies that intellectual property (IP), whether manifested in patents, trademarks, copyrights or trade secrets, is highly valuable and must be protected through robust IP enforcement....

This paper examines some of the economic and econometric issues that arise in attempting to measure the degree of concentration in an industry and its dynamic evolution. A general axiomatic basis is developed. We offer new measures of concentration over aggregated periods of time and provide a...

Stochastic dominance and Lorenz dominance are examples of orderings which require unanimous agreement among an infinite set of indices. This paper considers various subsets of inequality measures that respect Lorenz dominance, and assesses the extent to which a small number of indices can...

The concept of an environmental Gini coefficient has been used recently by several researchers. In line with Paglin's historical critique of the income Gini coefficient, an environmental Paglin-Gini is proposed and estimated, more carefully considering the notion of 'perfect environmental...