Endogenous Unions Formation

This paper analyzes the process of endogenous union formation in the context of a sequential bargaining model between a firm and several unions and tries to explain why workers may be represented by several unions of different sizes. We show that the equilibrium number of unions and their relative size depend on workers' attitudes toward the risk of unemployment and union configuration is independent of labor productivity.

Employment comovements at the sectoral level over the business cycle

This paper extends the technique suggested by den Haan (2000) to investigate contemporaneous as well as lead and lag correlations among economic data for a range of forecast horizons. The technique provides a richer picture of the economic dynamics generating the data and allows one to investigate which variables lead or lag others and whether the lead or lag pattern is short term or long term in nature. The technique is applied to monthly sectoral level employment data for the U.S. and shows that among the ten industrial sectors followed by the U.S. Bureau of Labor Statistics, six tend to lead the other four. These six have high correlations indicating that the structural shocks generating the data movements are mostly in common. Among the four lagging industries, some lag by longer intervals than others and some have low correlations with the leading industries indicating that these industries are partially influenced by structural shocks beyond those generating the six leading industries.

Informe titulado "Rendición del Ejército Vasco en Santander".

Fecha: 1937 (>1970 reproducción) / Unidad de instalación: Carpeta 45 - Expediente 1-6 / Nº de pág.: 62 (mecanografiadas)

Personal identity. A theoretical and experimental analysis

Published as article in: Journal of Economic Methodology, 2010, vol. 17, issue 3, pages 261-275.

Reproducción de la Correspondencia remitida por Juan de Ajuriaguerra, desde el penal del Dueso (Santoña), al general italiano Manzini.

Fecha: 15/23-10-1937 (>1970 reproducción) / Unidad de instalación: Carpeta 45 - Expediente 1-7 / Nº de pág.: 5 (mecanografiadas)

Reproducción de una carta en la que Juan de Ajuriaguerra informa a Doroteo de Ziaurriz de la represión ejercida sobre los vascos, y copia de denuncia contra un nacionalista vasco.

Fecha: 10-10-1937 (>1970 reproducción) / Unidad de instalación: Carpeta 45 - Expediente 1-8 / Nº de pág.: 4 (mecanografiadas)

Reproducción de Correspondencia en la que Juan de Ajuriaguerra comunica a Doroteo de Ziaurriz la situación de los presos vascos en Santoña.

Fecha: 29-10-1937/10-11-1937 (>1970 reproducción) / Unidad de instalación: Carpeta 45 - Expediente 1-9 / Nº de pág.: 3 (mecanografiadas)

The role of personal involvement and responsibility in dictatorial allocations: A classroom experiment

Paper was revised on 2009-11-11.-- Published as article in: Rationality and Society (2009), 21(2), 1-24.

Why Economists Reject Long-Term Fisheries Management Plans?

Most fisheries agencies conduct biological and economic assessments independently. This independent conduct may lead to situations in which economists reject management plans proposed by biologists. The objective of this study is to show how to find optimal strategies that may satisfy biologists and economists' conditions. In particular we characterize optimal fishing trajectories that maximize the present value of a discounted economic indicator taking into account the age-structure of the population as in stock assessment methodologies. This approach is applied to the Northern Stock of Hake. Our main empirical findings are: i) Optimal policy may be far away from any of the classical scenarios proposed by biologists, ii) The more the future is discounted, the higher the likelihood of finding contradictions among scenarios proposed by biologists and conclusions from economic analysis, iii) Optimal management reduces the risk of the stock falling under precautionary levels, especially if the future is not discounted to much, and iv) Optimal stationary fishing rate may be very different depending on the economic indicator used as reference.

Reference Points and Optimal Management in Stochastic Age-Structured Fisheries Models

The purpose of this article is to characterize dynamic optimal harvesting trajectories that maximize discounted utility assuming an age-structured population model, in the same line as Tahvonen (2009). The main novelty of our study is that uses as an age-structured population model the standard stochastic cohort framework applied in Virtual Population Analysis for fish stock assessment. This allows us to compare optimal harvesting in a discounted economic context with standard reference points used by fisheries agencies for long term management plans (e.g. Fmsy). Our main findings are the following. First, optimal steady state is characterized and sufficient conditions that guarantees its existence and uniqueness for the general case of n cohorts are shown. It is also proved that the optimal steady state coincides with the traditional target Fmsy when the utility function to be maximized is the yield and the discount rate is zero. Second, an algorithm to calculate the optimal path that easily drives the resource to the steady state is developed. And third, the algorithm is applied to the Northern Stock of hake. Results show that management plans based exclusively on traditional reference targets as Fmsy may drive fishery economic results far from the optimal.

Education and the dynamics of family decisions

This paper investigates the extent to which a biased transmission of educational endowments affects fertility. To this end, we devise a version of Becker’s family decision model that takes preference change into account. Specifically, we model education as an instrument that increases the autonomy (to prefer), and autonomy as an instrument of preference-change for household-structures. The empirical validity of the proposed model is examined for the European setting using the European Community Household Panel. In the context of the model, empirical findings imply the following. On the one hand, both preference for quantity and preference for bequest for each offspring (quality) increases with education, while preference for current consumption decreases. On the other hand, education is found to be negatively correlated with fertility, at a decreasing rate. Therefore, the paper provides a useful additional toolkit for public policy evaluation. It explains how public policies oriented toward the guarantee of personal freedoms, such as the expansion of education and autonomy, are likely to guarantee the same freedoms for subsequent generations.

Diseño y ejecución de una coreografía gimnástica grupal con música

Duración (en horas): De 41 a 50 horas .Nivel educativo: Grado

La guillotina ¿Cosa de Brutos?

Duración (en horas):Menos de 10 horas. Nivel educativo: Grado

Viandar de Sota: Dibersifikazioak kontrolatu edo areagotu egiten du enpresa-arriskua?

Duración (en horas): De 11 a 20 horas. Nivel educativo: Grado

Elikagaien barru-barruko egitura

Duración (en horas): De 31 a 40 horas.Nivel educativo: Grado