I present a model of industry dynamics resulting from competition between forward looking, heterogeneous firms that face three simultaneous challenges: learning in the process of production, competing against new entrants able to imitate best practice (albeit imperfectly), and enduring...

The formation of complex patterns in physical or biological systems is often caused by the interaction of many low (Kolmogorov) complexity systems, leading to emergent collective effects. In this contribution, we demonstrate how complex processing of acoustic signals by the peripheral auditory...

We investigate a simple nonlinear model of economics to which strong multiplicative noise is added, and find two distinct generic control regimes. In the regime of noisy behavior, the application of the control is able to reduce noise only if the underlying periodicity is correctly taken into...

Over the last 20 years, the annual average U.S. and Canadian productivity growth rates have been 2.3% and 1.3%, respectively. The objective of this paper is twofold. First, we empirically document the firm size distribution and the productivity for the two countries. Second, we quantitatively...

Shifts in the long-run rate of productivity growth--such as those those experienced by the U.S. economy in the 1970s and 1990s--are difficult in real time to distinguish from transitory fluctuations. In this paper, we explore how economists' projections of trend productivity growth gradually...