1,720,960 research outputs found
Valutazione del coefficiente sismico equivalente
No full textAttività di ricerca effettuata nell'ambito del programma Reluis (1° Anno).
Progetto di ricerca: Metodi innovativi per la valutazione di stabilità dei pendii
Studio della risposta sismica di pendii caratterizzati da cinematismi di collasso traslativi
No full textAttività di ricerca effettuata nell'ambito del programma Reluis (2° Anno).
Progetto di ricerca: metodi innovativi per la valutazione di stabilità dei pendii
Evaluation of Slope Performance under Earthquake Loading Conditions
No full textThe response of slopes to earthquake loading may be studied via effective stress dynamic analyses, displacement-based sliding block analyses or through force-based pseudo-static methods, the latter being the most widespread method used in common practice. In the pseudo-static approach, an equivalent seismic coefficient k is used within a conventional limit equilibrium slope stability analysis. Since k designates the static horizontal force to be used in the calculations, its selection is crucial for stability assessment. In the paper, equivalent seismic coefficients are evaluated relating the ground motion amplitude to earthquake-induced slope displacements using a database of Italian strong-motion records. Influence of soil deformability, that results in spatial variation of the seismic motion within the slope, is also evaluated through bi-dimensional seismic response analyses
Studio del comportamento sismico di una diga in terra zonata: Diga di Occhito sul fiume Fortore
No full textDiga S. Pietro sul fiume Osento - Analisi dinamica del comportamento della diga in presenza di sisma
No full textUniversità degli Studi di Roma La Sapienza - Dipartimento di Ingegneria Strutturale e Geotecnic
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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