An extra time duration model with application to unemployment duration under benefits in Spain

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 model that accounts separately for transition rates to work of the unemployed who receive UI and UA. For UI recipients the hazard rate rises dramatically when UI benefits lapse approaches. On the contrary, for UA recipients the hazard rate remains flat or even has a slight fall nearby the UA lapse. Finally, there is a group of unemployed qualified for UA that quit UI due to the income fall that they will experience when they pass from UI to UA.: unemployment insurance, unemployment assistance, mixed proportional hazard model, sequential exits, unobserved heterogeneity.

New evidence on state dependence in unemployment histories

Using administrative data records from the Spanish Employment Agency we examine whether or not there is evidence of state dependence in unemployment under benefits in Spanish young workers. For this fact, we use a mixed proportional hazard model that allows for state dependence through lagged duration dependence in order to disentangle the effects of unobserved individual heterogeneity and the true state dependence. We have found evidence that past unemployment experience and unobserved individual components affect the experience of longer future unemployment spells under benefits. However, we appreciate in workers with completed past unemployment spells that the correlation between the duration of succesive unemployment spells is only due to the unobserved components across individuals. Besides, we observe that workers in their second unemployment experience under benefits present higher hazard rates that in their first unemployment experience under benefits.state dependence, unemployment benefits, mixed proportional hazard models, unobserved heterogeneity

An extra time duration model with application to unemployment duration under benefits in Spain

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 model that accounts separately for transition rates to work of the unemployed who receive UI and UA. For UI recipients the hazard rate rises dramatically when UI benefits lapse approaches. On the contrary, for UA recipients the hazard rate remains flat or even has a slight fall nearby the UA lapse. Finally, there is a group of unemployed qualified for UA that quit UI due to the income fall that they will experience when they pass from UI to UA.unemployment benefits mixed proportional hazard model, unobserved heterogeneity

Contrastes asintóticos de especificación en funciones frontera

El contraste de multiplicadores de Lagrange (ML) se utiliza para verificar el diagnóstico\ud realizado en la especificación paramétrica de funciones frontera. En el caso de fronteras estrictas, se construye un contraste ML para la prueba de una especificación gamma(P,λ). En el supuesto de fronteras estocásticas, se diseña\ud un contraste ML en forma de TR² para las especificaciones normal-exponencial y normal-gamm

Dual Farrell measures of efficiency

This paper is a revised version of an old 1982 paper by the author, partially published in Spanish as Muro and Vera (1983) and cited for example in Fare (1985). The usual disclaimer appliesThis paper provides several definitions of efficiency measures in the price space. Economic and scale aspects of inefficiency are considered to give empirical content to the measurement of efficiency when the production technology is described by cost functions models. It shows, in the Hanoch’s symmetric duality approach, how the new definitions preserve the ranking of efficiency, are formally dually symmetric to the ones defined in the input space, and both are established with respect to different descriptions of the same technology. In addition, graphical procedures are utilized to make an insight into the achievement of polar technologies from primal ones and into the relationship between Shephard’s lemma and Roy’s identity

Homotheticity, duality and efficiency measures

This paper is a version of an old 1983 paper presented at IV Encuentro hispano-francés de economistas teóricos, Bilbao (1983). All remaining errors are our ownAs a result of the duality of cost and distance functions the efficiency of cost-minimizing behavior can be compared to shadow-prizing behaviour, and conversely. In this framework we outline the form that dual efficiency measures, Muro (1982), Muro and Vera (1983), adopt for homothetic and linearly homogeneous technologies. To illustrate the subject we provide a numerical example for a technology described by a translog cost functio

Diploma earning differences by gender in Colombia

This paper discusses the existence of diploma earnings differences by gender in Colombia with a model of sheepskin effects based on pseudo panel data for the period 1996-2000. Our results show a significant and distinctive effect of high school and university degrees among men and women. Thus, additional earnings associated with a high school degree are higher for women than for men, while additional earnings associated with a university degree are higher for men compared to women in Colombia in the period under consideration

On the size of sheepskin effects : a meta-analysis

We use information gathered from 122 studies on the effects of high school degrees on wages in different countries worldwide to carry out a meta-analysis that shows high school degrees have a statistically significant effect on wages of nearly 8%. This effect varies either when the review is made in countries away from the tropics or when factors such as sex, race, and continent are taken into account. Our results also reveal the existence of a publication bias that tends to increase the magnitude of the sheepskin effect. Nevertheless, when the former is included into the analysis the later remains statistically significant

Despejando la incógnita

En este Trabajo Fin de Máster presentamos la modificación y mejora de una Unidad Didáctica sobre Ecuaciones y Sistemas para un grupo de 4º ESO. En primer lugar se realiza un análisis de los referentes teóricos basados en lo aprendido en el Máster y los prácticos obtenidos en el ejercicio de la docencia. Las conclusiones nos llevan a una crítica razonada que se aplica en la modificación de la unidad propuesta inicialmente. Se concluye el trabajo reflexionando sobre los conocimientos obtenidos a lo largo del Máster, y su posible aplicación a la práctica profesional real.117 página