The notion that lack of knowledge undermines the economic performance of African countries is deeply and widely held to be true. Yet evidence for the basis of that truth is few and far in-between. This paper first describes a production function approach to the creation of knowledge of African...

The diffusion of health care technology is influenced by both the total market share of managed care organizations as well as the level of competition among them. This paper differentiates between HMO penetration and competition and examines their relationship to the adoption of cardiac...

This paper analyzes the effects of different sources of R&D funding and patent office attributes on the patenting process. Another important contribution is modeling the effect of a random delay in the ‘pendency’ time as a stochastic process and quantifying its effect on patenting. The...

Investment decision-making is modeled by means of a Kohonen neural net, where neurons represent firms. This is done in order to model investments in novel fields of economic activity, that according to this model are carried out when firms recognize the emergence of a new technological pattern....

We set up a unified growth model capturing the transition of a primitive and egalitarian hunter-gatherer society, into an advanced and despotic early civilization, and finally into a more egalitarian industrial society. Agents are either landowners or landless; both earn income from human...

In this paper, we study a two-sector version of the AK model proposed by Rebelo (1991), where constant returns to capital are confined to the investment goods sector. We show that this setup, an endogenous growth extension to the model of Greenwood, Hercowitz, and Krusell (1997), reproduces...

Schumpeter maintained that oscillations of macroeconomic variables are only the "secondary wave" of business cycles, a reflex of more fundamental "primary waves" at the microeconomic level caused by the innovative activity of entrepreneurs. Uniting Schumpeter's concern for innovation with...

The institution of slavery displays a puzzling historical pattern: it is found mostly at intermediate stages of agricultural development, in horticultural societies, and less frequently among hunter-gatherers and societies at more advanced agrarian stages. We explain this rise-and- fall pattern...