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Arduino-based accelerometers are receiving wide attention from researchers to make long-term Structural Health Monitoring (SHM) feasible for structures with a low SHM budget. The current low-cost solutions found in the literature share some of the following drawbacks: (1) high noise density, (2) lack of wireless synchronization, (3) lack of automatic data acquisition and data management, and (4) lack of dedicated field tests aiming to compare mode shapes from Operational Modal Analysis (OMA) with those of a digital model. To solve these problems, a recently built short-span footbridge in Barcelona is instrumented using four Low-cost Adaptable Reliable Accelerometers (LARA). In this study, the automatization of the data acquisition and management of these low-cost solutions is studied for the first time in the literature. In addition, a digital model of the bridge under study is generated in SAP2000 using the available drawings and reported characteristics of its materials. The OMA of the bridge is calculated using Frequency Domain Decomposition (FDD) and Covariance Stochastic Subspace Identification (SSI-cov) methods. Using the Modal Assurance Criterion (MAC), the mode shapes of OMA are compared with those of the digital model. Finally, the acquired eigenfrequencies of the bridge obtained with a high-precision commercial sensor (HI-INC) showed a good agreement with those obtained with LARA. [ABSTRACT FROM AUTHOR]

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This RA sets out to analyse the contents related to immigration on the web site www.elpais.com. The research deals, among other issues, with the formal approach made in that media, the themes and rights that appear, the evaluation made on migration and on the migrant subject, and the main actors involved. The Euro-Mediterranean Partnership, formerly known as the Barcelona Process, the European Neighbourhood Policy, and the Alliance of Civilizations are looked through and they provide for the different parts in the analysis. This article aims to get to know the way in which these issues appear in the cyberjournal. In order to do so, both informative and editorial texts are analysed according with the theory of the construction of social reality. [ABSTRACT FROM AUTHOR]