In order to overcome the potential loss of information that the transition to the new National Classification of Economic Activities could provoke in EPA series, INE has proposed a methodology to link CNAE 1993 and CNAE 2009 series. The procedure is based on employing a national transition...

The aim of the paper is to use the data envelopment analysis (DEA) for mining in Zacatecas and provide efficiency indicators in the years 1998, 2003, and 2008. We compare the performance of the state of Zacatecas with other mining states in Mexico. Then the empirical analysis extends to specific...

In some circumstances a decision maker, expert, in a group decision making problem cannot express his/her preferences with a unique linguistic fuzzy preference because he/she is dubious into some preferences. In this paper, we present a consensus model for group decision making problems with...

This article provides a tool to study over time the distributions of income in a population, regardless the irregular distribution of data. We even approach Lorenz curves at the times when we lack the required data. Finally we apply the present technique to a European country where inequalities...

The majority of published studies about the relation between institutional and entrepreneurial factors lack of an adequate empirical study. Due to the importance that the institutional environment has acquired in the last few years, we consider necessary a rigorous analysis using quantitative...

The differences that exist inside the labor Ecuadorian market, in the different branches of activity, demonstrate the training levels that the workers must have to avoid negative effects. However, in this study, the role played by individual, jobs and residence characteristics are analyzed on...

The level of default in financial institutions is a key piece of information in the activity of these organizations and reveals their level of risk. This in turn explains the growing attention given to variables of this kind, during the crisis of these last years. This paper presents a method to...

The generalized truck-and-trailer routing problem (GTTRP) constitutes a uniēd model for vehicle routing problems with trailers and a fixed lorry-trailer assignment. The GTTRP is a generalization of the truck-and-trailer routing problem (TTRP), which itself is an extension of the well-known...