This paper employs the autoregressive distributed lag (ARDL) bounds methodological approach to investigate the relationship between economic growth, combustible renewables and waste consumption, carbon dioxide (CO2) emissions, and international tourism for the case of Tunisia spanning the period 1990-2010. The results from the Fisher statistic of both the Wald test and the Johansen test confirm...

There are issues when researchers want to consider homogeneous, with regard to some functional relationship, groups. For example, in representative farm modelling analysts are interested in specifying groups of farms that have the same input/output relationship. This paper proposes to use the underlying functional relationship to derive such groupings. The paper employs finite regression mixtur...

First, this paper estimates the dimensions of the market for cannabis in Spain using data on the extent of consumption and the main patterns of use of consumers. Then the paper reviews the hypothetical production and distribution costs of these drugs in different production regimes under different legal conditions. The review shows that current prices of cannabis in the illegal market could be ...

In his letter (1), Berti argues that our failure to find a relationship between farm production diversity (PD) and household dietary diversity (DD) may be due to the fact that PD and DD were measured using different scales. First, we would like to clarify that the main result of our article is not a zero relationship. What we find is a relatively small relationship between PD and DD (smaller th...