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In this paper the cliff shoreline erosion on the coastline between Punta Montijo and the Chipiona Port (Cadiz, Spain) is studied. The reasons which cause this erosive phenomenon and the future erosive tendency of these cliffs are estimated, obtaining magnitudes of recession and the rate at which it will occur. Analysis of the current situation has been carried out by determining its plan shape, the study of the theoretical erosion profile of the cliffs and the verification of their failure. The future evolution of the cliffs shoreline has been analysed through the simulation of its recession and the study of the profile response to storm wave action. Finally, is presented a model to estimate the recession of the cliff shoreline.

The scattering of sound by a cluster of rigid cylinders in air has been investigated both theoretically and experimentally. The cluster was made by a lattice of cylinders with hexagonal symmetry. The sound scattered in all directions around the cluster is measured and compared with a calculation based on multiple scattering theory. The behavior as a function of the external geometry of the cluster will also be presented. The refraction and reflection of the sound by the boundaries of the cluster is analyzed by a theoretical model that takes into account its inner crystal symmetry. [Work supported by MEC of Spain.]

The conservation of Modern Movement architecture as a built architectural heritage requires also its renovation to reach today's standards of comfort and efficiency. It is even more necessary when it is still in use, as in the case of residential architecture. Moreover, it is a living heritage that, to be understood holistically, requires consideration of the experiences of its inhabitants. The Virgen del Carmen Group in Valencia is a residential complex designed and built by GO-DB Arquitectos between 1958 and 1963, and included in the DOCOMOMO Ibérico database. This architectural complex has been taken as an object of study to analyse the interpretation of its past based on exhaustive historical and archival research. This is the necessary first step towards its heritage consideration on which its future revitalisation and energy upgrading will be supported. This paper will detail the main results of the historical and archival research carried out. The changes and transformations, that the Virgen del Carmen Group has undergone over the years, have been evidenced by comparing the original project, the renovation projects, and its current state.To this end, the documents kept in the main national archives and those of the Valencian Community and the city of Valencia were consulted, as well as various historical photographic, newspaper and video sources.

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