1,721,039 research outputs found
Tecniche Antisismiche Storiche e Comportamento Meccanico dei Tessuti Edilizi di Paganica in Occasione del Terremoto Aquilano del 2009
No full textSTRUCTURAL ANALYSIS OF EARTHQUAKE-RESISTANT HISTORICAL DETAILS OF L'AQUILA (CENTRAL ITALY) BUILDINGS
No full textThe 2009 L'Aquila earthquake has induced very large damages in historical constructions. Surveys performed in the months after the main shock have brought to light construction details, meant to improve seismic performance, typical of the area. Most of them make use of timber elements, probably because the material was widely and inexpensively available. Timber wall anchors are used to tie horizontal timber floor/roof beams to the vertical masonry panels. Timber is used as well as part of ties that lie within the wall section and which are connected to facades through horizontal iron strips and vertical iron wall anchors. These connections are modelled as carpentry joints or within an up-to-date Johansen framework. Once the ultimate load causing the connection failure is established, out-of-plane verification of masonry facades is performed. Residential dwellings of both L'Aquila urban area (within an historical aggregate in the centre of Paganica) and L'Aquila province (in the municipality of Lucoli) are considered. The numerical analyses show that fully-timbered tied beams can prove very effective in preventing out-of-plane collapses, if the connection (which lies outside the masonry) is adequately maintained throughout the whole building's life. More controversial is the use of composite timber-andiron ties, because the timber within the masonry volume can easily decay, is complicated to maintain, and make the wall itself vulnerable because of the large size of timber elements
Il Forum: La legge 194 non si tocca?
No full textLo scritto raccoglie le risposte in merito alle percorribilità di modifiche alla legge in tema di interruzione di gravidanzaThe paper analyses the possibility to amend the law regarding abortio
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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Tipi Edilizi
No full textL’esperienza abruzzese della facoltà di Architettura della Sapienza di Roma, coinvolta come altre università nella ricostruzione post-sisma dei centri storici dei piccoli comuni aquilani, è contraddistinta da significative specificità connesse ai caratteri dell’evento distruttivo, alle misure legislative adottate e al modello scelto per la ricostruzione.
Tali elementi possono ben rappresentare non solo la differenza di questa ricostruzione rispetto ad altre esperienze del passato, ma anche la profonda diversità tra la vicenda dei 56 piccoli Comuni del cratere e quella della città dell’Aquila.
Nel lavoro svolto dalla Sapienza la ricostruzione è intesa come dispositivo d’interazione tra soggetti diversi, capace di garantire la riqualificazione e la rivitalizzazione dei centri storici, afflitti dallo spopolamento e dall’abbandono, di stimolare dinamiche endogene di rilancio socio-economico e di favorire l’integrazione tra politiche di tutela ambientale e politiche di sviluppo, in particolare rivolte al turismo.
Questo in sintesi l’indirizzo programmatico che orienta i Piani di Ricostruzione dei Comuni dell’Area Omogenea della Neve presentati in questo libro.The recognition of the Building Types is part of the analysis of the building aggregates of the historical centres involved in the Reconstruction Plans. This phase is a relevant step in the understanding of the urban fabrics and of their constitutive relationships.
The comparison between Building Type and Building Unit contributes to highlight the differences and morphological modifications with respect to a rigid typological classification process. On the other hand the direct observation of a single portion of the urban fabrics may not grasp the historical transformation process and, thus, the characters of an urban landscape. A building type has been linked to every building unit belonging
to an historical centre of the Homogeneous Area of
the Snow. The building types have been defined from the elementary building types (single-storey house, terraced house, block of flats, and so on), retracing their main evolutive paths and recognising specific variation of this Area (such as the terraced house orthogonal
to the ground slope). However, these archetypical categories cannot fully describe the growing and stratification process of each building unit in its specific development; only the recognition of the spatial relationships between building units, the description
of the connections between the masonry cells, the sequence of the construction phases can achieve an adequate portrayal of the historical process leading to the current urban landscape
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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