We develop a simple theoretical framework for the evolution of weighted networks that is consistent with a number of stylized features of real-world data. In our framework, the Barabasi-Albert model of network evolution is extended by assuming that link weights evolve according to a geometric...

We develop a simple model where exporting firms are characterized by het- erogeneous productivity and may face a liquidity constraint, which in turn is affected by exchange rate changes. This setup is used to analyze exchange rate exposure, i.e. the sensitivity of profits to exchange rate...

Considerable efforts have been made in the recent years to produce detailed topolo- gies of the Internet. While Internet topology data have brought to the attention of a wide and somehow diverse audience of scholars they have been so far over- looked by economic analyses. In this paper we...

Several economic phenomena are found to follow an approximate Pareto distribution, at least in the upper tail. The debate is well established for the distribution of wealth and business firms, and has recently been particularly animated with respect to city sizes. In this paper we contribute to...

The paper analyzes the link between financial constraints and firms' export decisions, using a large micro-level data set on French Manufacturing firms over the 1996-2004 period. Our main finding is that firms enjoying better ex-ante financial heath are more likely to start exporting. This...

The paper analyzes the link between financial constraints and firm export behavior. Our main finding is that firms enjoying better financial health are more likely to become exporters. The result contrasts with the previous empirical literature which found evidence that export participation...

We use comparable micro level panel data for 14 countries and a set of identically specified empirical models to investigate the relationship between exports and productivity. Our overall results are in line with the big picture that is by now familiar from the literature: Exporters are more...

In this paper we adopt both a nonparametric and a semi- parametric IV estimator to show that the relationship between inflation and output growth is non-linear and that there exists a threshold level below which ination has no e¤ects on growth.