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Liquefaction is an effect for which a saturated soil suffers a severe loss of shear strength due to an increase of pore-water pressure. This effect, which generally affects loose granular soils, is usually produced by cyclic loading such as that the induced by earthquakes. In Spain, three different national standards plus Eurocode can currently be applied in the assessment of potential liquefaction of a soil site. In this research, a comparative study of the similarities and differences between these standards has been performed. Moreover, to improve understanding of the differences between standards, the factor of safety against liquefaction has been obtained for three real cases in the province of Alicante. According to the obtained results, it can be concluded that the safety factor can present significant differences depending on the code used. [ABSTRACT FROM AUTHOR]

Blockchain technology possibilities are analysed in the context of RDC-Arq requirements form the point of view of archivists' perception about digital documents authenticity and integrity. In particular, this article sought to explore software security features used for digital documents management by archivists. It was considered how that software is been used to preserve the authenticity and integrity of digital documents, and the professional opinion about how it contributes to preserve the chain of custody. Finally, a comparative between blockchain technology and the RCD-Arq features is elaborated from the perspective of the archivists participating in the research. The research shows that blockchain technology have good potential for maintening the authenticity and integrity of digital documents, highlighting the importance of following RDCArq guidelines. [ABSTRACT FROM AUTHOR]