We study an optimal growth model with one-hoss-shay vintage capital, where labor resources can be allocated freely either to production, technology adoption or capital maintenance. Technological progress is partly embodied. Adoption labor increases the level of embodied technical progress....

This paper explores the interactions between maintenance, adoption and investment activities when labor is heterogeneous. We consider that adoption activities are intensive in human capital whereas capital maintenance requires unskilled labor. Among the main results, we find that the optimal...

In this paper, we study a vintage capital model under a general equilibrium setting. In this model firms can invest not only on a new vintage capital goods, but also on existing ones. We show that the capital accumulation is a single hum-shape function, featuring slow technology diffusion.

In this paper, we study the properties of optimal growth models à la Nelson and Phelps (1966) where the labor resources of an economy can be allocated freely either to production, technology adoption or capital maintenance. We first characterize the balanced growth paths of a benchmark model...

In this paper, we introduce adoption costs in a canonical vintage capital model. Adoption costs take the form of a direct loss in production during a fixed period of time. We explicitly characterize the optimal machine replacement policy as a function of the adoption period. Using an explicit...

We study technology adoption in an optimal growth model with embodied technical change. The economy consists of the final good sector, the capital sector, and the technology sector whose role is the imitation of exogenous innovations. Labor resources are scarce. They are freely allocated to the...

In this paper, we introduce adoption costs in a vintage capital model. We assume that the incorporation of technological innovations into the production sector requires an extra labor cost during a fixed period. First, we show how adoption crucially matters in the shape of short run and...