Empirical studies indicate a positive dependence of the output growth on the ratio of human capital to physical capital (an imbalance effect). This paper considers standard one-capital and two-capital one-sector endogenous and exogenous growth models with adjustment costs. Two-capital models...

In this paper we analyse the dynamics of both Romer's original model of endogenous growth and of a modified version where the level of labour and human capital are determined endogenously. We find that the original model can have an indeterminate Balanced Growth Path (BGP) if there is some...

We propose the relaxation algorithm as a simple and powerful method for simulating the transition process in growth models. This method has a number of important advantages: (1) It can easily deal with a wide range of dynamic systems including multi-dimensional systems with stable eigenvalues...

We study the dynamics of self-organized systems when disturbed by shocks. For this purpose, we consider extensions of the "Bar Attendance Model" [1] (BAM), which provides a stylized setting for the analysis of the emergence of coordination in the behavior of a large collection of agents. We...

Resources used in scientific activities are, as any other, scarce. Hence, the economic system has, in every time moment, to choose how to allocate technological inputs. A technology choices model is developed, where scarce scientific resources are alternatively allocated to basic science...