We present a simplified model for the exploitation of resources by interacting agents, in an economy with small-world properties. It is shown that Gaussian distributions of wealth, with some cutoff at a poverty line are present for all values of the parameters, while the frequency of maxima and...

We study the mutual influence of authority and persuasion in the flow of opinions. We describe a simple model with no social mobility, where each agent belongs to a class in the hierarchy and has also a persuasion capability. Agents use the force of its persuasion to propagate their opinions;...

The phase separation process in two-dimensional binary fluid systems is investigated using molecular dynamics for almost 20 000 particles. Previous works from the same authors have shown that the late-stage coarsening regime at critical volume fractions is described by power laws whose...

This paper studies the joint behaviour of inflation and unemployment in Spain over the period 1964-1995. We analyze the implications both of full hysteresis in umeployment and high inflation persistence for inference regarding dynamic Phillips trade-offs and sacrifice ratios in the Spanish...

The paper addresses the issue of the role of exchange rate jumps. The short-run dynamics of the peseta's effective exchange rate vis-a- vis OECD countries over the period 1974:1 - 1995:9 is estimated using a PPP-based error-correction model enlarged with additional terms allowing for the...

We study the effect of the social stratification on the wealth distribution on a system of interacting economic agents that are constrained to interact only within their own economic class. The economical mobility of the agents is related to its success in exchange transactions. Different wealth...

We analyze a conservative market model for the competition among economic agents in a society with conserved total wealth. A minimum dynamics ensures that the poorest agent has a chance to improve its economic welfare. After a transient, the system self-organizes into a critical state where the...