This article focuses on the technological aspect of recycling, its effect on the production set of the economy and the optimal use and substitution of natural resources in production. We provide a framework that enables us to compare the relevance of using renewable resources and recyclable...

This paper presents a theoretical model to find the optimal selective-logging regime of a size-distributed forest. The law of motion of the economic model is governed by a partial differential equation that describes the evolution of the forest stock over time. To find the solution of the...

This paper postulates that the effect of unemployment benefits on the hazard rates changes considerably using a traditional duration model that uses only unemployment insurance (UI) data, or deals with unemployment assistance (UA) as a mere extension of UI, instead of an extra time duration...

En el presente trabajo se realiza una revisión de los métodos que tienen en consideración variables de entorno para la análisis de eficiencia mediante métodos frontera. Se propone además un nuevo método de tres etapas que supone una continuación del propuesto por Charnes, Cooper y Rhodes...

We study the optimal capacity of landfills taking into account their sequential nature. Such an optimal capacity is characterized by the so-called Optimal Capacity Condition. Particular versions of this condition are obtained for two alternative settings: first, if all the landfills are to have...

El presente trabajo pretende aportar evidencia empírica acerca de los salarios de los inmigrantes en España y su posible discriminación en comparación con los de los nuevos trabajadores nativos. Para ello, se utilizan datos procedentes de la Muestra Continua de Vidas Laborales (MCVL,...

In this paper we propose to analyze the economic problem of allocating tasks on time in order to finish a complex project when information about tasks' duration and predating sequences of tasks is privately owned by the agents that undertake each task. In order to achieve the efficient...

This paper explores the effects of several fiscal variables on regional economic growth in Spain over period 1965-1997. Panel estimates are provided for this sample. The results show that public consumption affects negatively growth, public investment exerts a positive (but non significant)...

El objetivo de este trabajo es modelar la evolución de los indicadores de incapacidad temporal. Disponer de modelos capaces de aproximar cuál será la evolución temporal de los indicadores económicos de baja laboral resulta clave por múltiples aspectos. Por un lado, permite tomar medidas de...

In this paper, a multiobjective scheme is used to study the satisfaction levels of the Spanish workers. Data obtained from a panel survey conducted in several European countries are used to build up a multiobjective model, on the basis of a previous statistical and econometric analysis of these...