Tidal mills were the main industrial activity in the Bay of Cadiz for centuries. They were the last step in the production of salt and flour made by grinding grains. They were installed along the shallow channels, called "caños", around the Bay, where the frictional and geometrical effects are very strong. The authors have analyzed the propagation of the semidiurnal tidal waves along the Caño de Sancti Petri and the available tidal power in the area. The ancient tidal mills were located where the available tidal potential energy is highest, which ensured productivity for grinding salt and wheat in ancient times. Some considerations about the possibility of installing tidal power plants in the Bay of Cadiz now are given, which show that it could be a real and renewal alternative source of energy for the area.
durante los primeros años de Transición (1976-1981). Esta organización pasó en pocos años de ser la segunda fuerza sindical en España, detrás de Comisiones Obreras, a ocupar un papel secundario en la arena sindical. A partir de testimonios orales de sindicalistas en diferentes sectores industriales se reconstruyen los marcos, los dilemas y los conflictos internos de dicha organización sindical en el periodo que ha sido mencionado. Este análisis permite cubrir lagunas sobre una de las organizaciones sindicales que han sido menos estudiadas en la historiografía y en la sociología españolas. Asimismo, permite identificar los factores que han propiciado, históricamente, la hegemonía de los sindicatos mayoritarios a escala estatal. Finalmente, permite comprender cómo las representaciones sobre la autonomía sindical y el intercambio político juegan un papel importante en la configuración de la estrategia sindical en diferentes niveles.
En los últimos años, el concepto de «ortodoxia» ha venido utilizándose en los estudios sobre comunismo para sustituir al de comunistas «prosoviéticos». Partiendo de una perspectiva híbrida, comparativa, procesual y anti-naturalista, en el presente artículo trataremos de demostrar que esta nueva denominación presenta serias limitaciones analíticas que, lejos de aportar una mayor claridad conceptual que permita catalogar y diferenciar mejor a unos comunistas de otros, genera nuevos problemas metodológicos para los historiadores del comunismo español.
In recent years, the concept of “orthodoxy” has been used in communist studies to replace that of “pro-Soviet” communists. Taking a stance that hybridizes comparative, processual and anti-naturalist perspectives, this article demonstrates that this new denomination presents serious analytical limitations that, far from providing greater conceptual clarity which might make for better cataloguing and easier differentiation between communist actors, actually generates new methodological problems for historians of Spanish communism.
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