This paper presents the main results of a study conducted in Portugal with the aim of identifying the current trends of the television ecosystem, with special relevance to understand the cognitive processes of viewers when selecting what to watch on TV. To this end, an online survey targeted mainly to young adults with mid to high academic degrees was designed. The survey gathered more than 600 responses, of which 550 were validated and taken into account in the data analysis. The results provide a detailed insight about the habits, dynamics and behaviors of spectators regarding the actual scenario of television. It also allowed the identification of the most relevant criteria considered by viewers when deciding what to watch on TV. The most important ones include the program genre followed by the state of mind (mood), the people who share the couch with and the time available to watch TV. The results also provide a structuring framework for the design of interactive television applications, targeted to this audience in the areas of personalization, recommendation and search and discovery of TV content.

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The magnetocaloric effect (MCE) is a good chance to create a more efficient refrigeration technique, both in energy and environmental friendliness. On the search for materials with large MCE (mainly characterized by a great magnetic entropy variation) in a wide temperature range around room temperature, this work focuses on the widely studied Heusler alloy and the influence of bismuth alloying in the stoichiometry Ni 2 MnGa in an attempt to make the magnetic and structural transition temperatures, T C and T M , come closer, and therefore create a large MCE. In addition, we discuss the influence of alloying processes on the magnetic anisotropy. Our results have in fact increased T M and decreased T C , but Bi substitution in Ga site (from 0 up to 5%) has been insufficient to merge those two transitions. The maximum magnetic entropy change was found to be 3.8 J/kg.K for the pure sample (without Bi) and 2.2 J/kg.K for sample 4 (maximum Bi concentration).Index Terms-Heusler alloy, magnetocaloric effect, memory shape, Ni 2 MnGa.