The “need” to build walls and barriers, restore boundaries, restraining “waves” of refugees and migrants, appears one of the most urgent priorities involving European countries. In Italian media and political debate this theme has been very important in last years also regard a peculiar kind of border, the maritime one, for the centrality acquired by Lampedusa and other coasts, also as symbolic space of construction of relationship with the “Other”. On the other hand, the media defined also “symbolic internal borders”, by focusing on certain themes or images of migrations. The contribution aims to explore and deconstruct the main mechanisms of representation and news-media construction of immigrant image in Italy. Through frame analysis (mostly carried out with qualitative and non-standard methods) will be enlightened three main discursive dimensions: a) the so-called “landing emergency” (as external border); b) the central interest on crime news where immigrants are protagonists, and c) the cultural-religious dimension of immigration (both as internal border).
Acoustic absorbing materials are applied to reduce noise levels in a room. They are also used to adjust the reverberation time an acoustic enclosure to use for which it´s designed. There are multi-purpose rooms for conferences, concerts, cinemas, etc. In this case, the acoustic absorbent materials should be changed according to use. Curtains can be an easy way to modify the acoustics of a room based on usage. This paper presents a study of the acoustic absorption of different curtains under actual placement. The study was performed in a reverberant chamber. It takes into account different textiles. It also takes into account different air plenums and different fullness to pucker. It can be seen in the results, good acoustic behavior of such systems. The acoustic absorption of different fabrics, air plenums and plicate of textiles (fullness) are compared in this work. The good acoustic behaviour of these systems is observed in the results.
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