Hellerstein and Neumark (1999) developed a very straightforward method to detect wage discrimination using matched employer-employee data. However it may produce biased estimates whenever there is not perfect competition in the labor market or when the discriminated group is segregated into good or bad firms. The purpose of this paper is to develop a test for wage discrimination that completes ...

We present a series of statistical tests using homogeneous data and measurements for a sample of Seyfert galaxies. These galaxies were selected from mostly isotropic properties, their far infrared fluxes and warm infrared colors, which provide a considerable advantage over the criteria used by most investigators in the past, like ultraviolet excess. Our results provide strong support for a Unif...

This article proposes an agent-based model to study the impact of the European regulation REACH on industrial dynamics. This new regulation was adopted in 2006 and establishes a new philosophy of how to design environmental protection and health, especially through the authorization process and the extended producer responsibility. The main contribution of this article is to investigate how dif...