For practical considerations, it is in some case impossible to simulate MAS models at population level. The current paper shows that MAS models applied to samples with heterogeneous costs of interactions between agents have biased results. Heterogeneous costs of interactions in MAS models can...

This article analyzes the efficiency of Water Users Associations (WUA) in the Cap Bon region(Tunisia) and studies its main determinants. The analysis is performed in two stages. First, theefficiency is measured via the nonparametric “Data Envelopment Analysis” (DEA) technique. TheDEA models...

The paper aims to investigate the economies of scale of Water Users’ Associations (WUA) inTunisia. During the last years there has been a lot of discussion in Tunisia about the optimal sizeof WUAs, which allows more efficient management of the water resources at the local level. Inthis work we...

The paper aims to investigate the economies of scale of Water Users’ Associations (WUA) in Tunisia. During the last years there has been a lot of discussion in Tunisia about the optimal size of WUAs, which allows more efficient management of the water resources at the local level. In this work...

With increasing water scarcity, research on policy options for improved water allocation and governance becomes an urgent priority for many developing and developed countries. Evaluating institutional alternatives is however a challenging task. This article takes a comparative approach and...

We measure the technical efficiency of unheated greenhouse farms in Tunisia, and propose a measure for irrigation water use efficiency (IWUE) using an alternative form of the data envelopment analysis (DEA) model. Technical efficiency measures the degree to which (all) farm inputs are used...