Sub-Saharan Africa ranks among the top regions in terms of growth in the number of mobile phone users. The success of mobile telephony is attributed to the opening of markets for private players and lenient regulatory policy. However, markets may be increasingly saturated and new regulations...

International openness enhances social interactions between citizens of different countries or regions and vice versa. Social exchanges, in turn, increase trade flows between countries and influence markets and prices. We analyze the increased mobility that follows from openness between two...

In this paper, we develop a new firm-level measure of distance to the productivity frontier that accounts for international technology spillovers stemming from the use of imported intermediate goods. The trade-weighted technological distance to frontier is matched with sector- and country-level...

The patterns of innovation diffusion are well approximated by the logistic curves. This is the robust empirical fact confirmed by many studies in innovations dynamics. Here we show that the logistic pattern of innovation diffusion can be replicated by the time-dependent stochastic process with...

This paper develops a new open-economy endogenous growth model where technology diffusion allows for a stable and non-degenerate world income distribution. In accordance with the empirical literature, I find that country characteristics such as the social infrastructure, the degree of openness,...

Nanotechnologies are expected to be the dominant general purpose technology of the next decades. Their market potential is immense and especially demand side arguments will have far reaching consequences for innovations. They may occur as increased miniaturization or via building completely new...

In the discussion on innovations for sustainable development, radical innovations are frequently called for in order that the transformation of society to a system perceived as sustainable can succeed. The reason given for this is the greater environmental efficiency of these innovations. This...

Within a standard gravity framework I explore the impact of country size and trade liberalisation on extensive and intensive margins of imports across broad categories of goods. This allows testing hypotheses from two distinct strands of the trade literature, i.e., vertical integration versus...

This paper analyzes a stylized model of international capital mobility and diffusion of embodied technologies from North to South. The South can fall behind in terms of technologies or get trapped in a situation, in which it is unable to attract foreign capital and embodied technologies, if its...

We study the North-South diffusion of technologies embodied in internationally mobile capital in a framework of intertemporal global welfare maximization. Convergence of the growth rates of technical change in the North and South always occurs in the long-run. However, the degree to which the...