This paper aims at estimating the determinants of co-authorship in economics. More specifically, we test if there is a relationship between the efficiency in research of an individual and that of his co-authors using a novel database of French academics. The main empirical result is that the...

This paper provides evidence on the mechanisms influencing the patent output of a sample of biotechnology firms from the input of indirect knowledge acquired from capital expenditures and direct knowledge from in-house R&D. Statistical models of counts are used to analyse the relationship...

This paper provides evidence on the mechanisms influencing the patent output of a sample of biotechnology firms from the input of indirect knowledge acquired from capital expenditures and direct knowledge from in-house R&D. Statistical models of counts are used to analyse the relationship...

This paper provides evidence on the mechanisms influencing the patent output of a sample of biotechnology firms from the input of indirect knowledge acquired from capital expenditures and direct knowledge from in-house R&D. Statistical models of counts are used to analyse the relationship...

A two-way fixed effects Poisson model is used to investigate the impact of 43 EPA-sponsored pollution prevention (P2) practices on compliance and enforcement for a sample of facilities in the US manufacturing sector. I find that P2 adoption reduces environmental violations in three industries...

Conventional studies of bilateral trade patterns specify a log-normal gravity equation for empirical estimation. However, the log-normal gravity equation suffers from three problems: the bias created by the logarithmic transformation, the failure of the homoscedasticity assumption, and the way...

Conventional studies of bilateral trade patterns specify a log-normal gravity equation for empirical estimation. However, the log-normal gravity equation suffers from three problems: the bias created by the logarithmic transformation, the failure of the homoscedasticity assumption, and the way...

A two-way fixed effects Poisson model is used to investigate the impact of 43 EPA-sponsored pollution prevention (P2) practices on compliance and enforcement for a sample of facilities in the US manufacturing sector. I find that P2 adoption reduces environmental violations in three industries...