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The circumstances surrounding the call for a referendum on national independence in Catalonia in October 2017 led to high levels of collaboration between two, at first sight, unlikely partners: anarchists and Catalan independentists. Unlikely as this alliance may seem, it was well grounded on a number of factors: first of all, in the State response to the independentist challenge—the massive repression and the blockading of institutional channels to process nationalist demands pushed both movements closer in opposition to the central government; and secondly, in the prolonged interactions (in specific regions and industries) and engagement in joint solidarity activities between anarchists and segments of the Catalan left who had been influenced by the bottom‐up approach of the indignados movement. Finally, this collaboration was also rooted on a long history of mutual engagement between anarchism and sectors of Catalan nationalism that, while not unproblematic, provided deep roots to this dialogue. [ABSTRACT FROM AUTHOR]

Reservoirs are natural or artificial lakes used as a source of water supply for society daily applications. In addition, hydroelectric power plants produce electricity while water flows through the reservoir. However, reservoirs are limited natural resources since water levels vary according to annual rainfalls and other natural events, and consequently, the energy generation. Therefore, forecasting techniques are helpful to predict water level, and thus, electricity production. This paper examines state-of-the-art methods to predict the water level in Catalan reservoirs comparing two approaches: using the water level uniquely, uni-variant; and adding meteorological data, multi-variant. With respect to relating works, our contribution includes a longer times series prediction keeping a high precision. The results return that combining Support Vector Machine and the multi-variant approach provides the highest precision with an R 2 value of 0.99. [ABSTRACT FROM AUTHOR]