The paper addresses the problem of complex regional economic growth by using nonlinear Keynesian model with focusing on direct foreign investments effects. We investigate the dynamics of the model for the broad range of parameters which, in particular, contains the parameter values obtained...

We develop a simple model of the foreign exchange market in which agents optimize their portfolio and use different forecasting rules. They check the profitability of these rules ex post and select the more profitable one.This model produces two kinds of equilibria, a fundamental and a bubble...

A positive Lyapunov exponent is one practical definition of chaos. We develop a formal test for chaos in a noisy system based on the consistent standard errors of the nonparametric Lyapunov exponent estimators. For international real output series, the hypothesis of the positive Lyapunov...

In their efforts to change organizations, managers and change consultants are time and again confronted with the limited controllability of organizations, the complexity and indeterminacy of change processes and the uncertain and ambiguous effects of their actions. In short, they are confronted...

California heralded the New Year with a wave of rolling blackouts, spiraling wholesale electricity prices, and at least one utility bankruptcy. California, which symbolizes the electronic age and represents an eighth of the U.S. economy and its population, faces electricity supply issues not...

(VF)L’objectif de cet article est de tester la présence de chaos dans les ventes de biens à la mode. Après avoir brièvement rappelé le débat théorique autour de cette hypothèse, nous présentons les résultats. Ces résultats renforcent la plausibilité de l’existence d’un...