We discuss the selection of the socially optimal discount rate for public investment projects that entail costs and benefits in the very long run. More specifically, we examine in an expected utility framework how the uncertainty on the growth rate of the GNP per head affects this rate. Under...

In this paper we analyse tourism sustainability from a modelling point of view. The minimal model we propose is composed of three non-linear ordinary differential equations describing the dynamics of tourists, environment and services. Many of the parameters involved are concerned with the...

Optimal management of biodiversity at the national level, even if achievable, is not necessarily consistent with a global optimum. While the existence of trading relationships allows for the possibility of the use of trade interventions as a means of imposing unilateral solutions, the presence...

The problem that we address in this paper stems from the trend to delegation in the water management field. The problem that we address refers to the municipality's negotiating disadvantage in the face of some cartelized water management. We discuss the specific characteristics of the delegation...

There is now increasing recognition that the world's marine ecosystems, especially coastal areas and semi-enclosed seas, are suffering from degradation and modification due to human influences. One of the most serious problems is nutrient enrichment, which in the long term harms productivity and...

The behaviour of future policy-makers substantially influences future greenhouse gas emissions. Uncertainty about the motives of future policy-makers may thus strongly influence the climate policy strategies of current policy-makers. Analytical and numerical analyses in this paper confirm this...

The objectives of this paper are to propose and to implement for the French case an approach for the estimation of consumers' willingness to pay for tap water quality. This method is indirect and is based on the observation of the households' demands for soft drinks and bottled water. The lack...

The paper considers a SUTSE model embedded in a dynamic framework to estimate an energy cost share model for the Italian economy in an evolutionary environment. This is achieved by allowing stochastic seasonal and trend components in the long-run specification and constructing an error...