he debate about the effectiveness of the counteracting policies against the supply of drugs, in particular of cocaine, is very lively and intense. Indeed, since many opinions are based on certain measures rather than others, the construction of reliable indicators is one of the preconditions for...

he debate about the effectiveness of the counteracting policies against the supply of drugs, in particular of cocaine, is very lively and intense. Indeed, since many opinions are based on certain measures rather than others, the construction of reliable indicators is one of the preconditions for...

A large number of studies has been canvassed by the growing rates of diffusion of Open Source Software. However, a formal analysis of the process of competition between open-source and proprietary software is still missing. We propose an epidemic model of innovation diffusion to deal with the...

Background: Data on the cocaine market appear to be inconsistent, as they tend to show declining prices vis-a-vis a steady or increasing demand and a declining supply. This paper proposes an explanation for this trend by providing evidence that there is an under-estimation of the supply of...

A large number of studies has been canvassed by the growing rates of diffusion of Open Source Software. However, a formal analysis of the process of competition between open–source and proprietary software is still missing. We propose an epidemic model of innovation diffusion to deal with the...

Although open source software has recently attracted a relevant body of economic literature, a formal treatment of the process of com- petition with its proprietary counterpart is still missing. Starting from an epidemic model of innovation di?usion, we try to ?ll this gap. We propose a model...