This work provides a computational cobweb model with heterogeneous adaptive producers with endogenous market entry and exit. Firms face a borrowing constraint and so can go bankrupt. At the same time when average profits are positive there is an inflow of new firms in the market. Bounded dynamics and endogenous volatility are shown to follow without resorting to nonlinearities.

Abstract We relax the common assumption of homogeneous beliefs in principal-agent relationships with adverse selection. Principals are competitors product market and write contracts also on base an expected aggregate. The model is a version cobweb model. In evolutionary learning set-up, which imitative, principals can have different about distribution agents’ types population. resulting nonline...

The OLAP (On-Line Analytical Processing) systems provide a multidimensional analysis of voluminous databases by generating a synthetic vision of data. Several studies have focused on the application of these OLAP techniques on structured and semi-structured data, and more specifically XML documents. In this context, we propose a new multidimensional model for the OLAP of XML documents. The prop...

Conditions in the market for lawyers have been remarkably turbulent over the course of the last forty years, both in terms of the size of the legal industry and the earnings of attorneys. Similarly, law school demand has been in a state of constant flux, oscillating between cycles of boom and bust. This study examines the appeal of law school over the same period, using administrations of the L...

Chaotic oscillators with Coulomb-type friction were extensively studied in the past. However, these investigations mostly deal with rather complex mechanical models that are closely related to everyday’s engineering applications. In the present paper, we introduce a stick-slip oscillator consisting only of a spring and a block sliding on a rough surface, and the block is periodically forced. A ...