1,720,963 research outputs found
Strengthening of in-plane and out-of-plane capacity of thin clay masonry infills using textile- And fiber-reinforced mortar
Full text linkThis paper presents an overview of the experimental results obtained by combined in-plane/out-of-plane (IP/OOP) tests carried out on reinforced concrete (RC) frames infilled with thin clay masonry walls. After preliminary characterization tests on building materials, combined IP/OOP tests on eight full-scale, one-bay, one-story infilled RC frames were carried out. Three external strengthening solutions were investigated considering three types of lime-based plasters, reinforced by means of dispersed fibers and/or bidirectional basalt meshes, applied on both sides of each wall. The experimental results of the tested frames are presented, discussed, and compared to evaluate the performance and the effectiveness of each strengthening solution
A new macro-model to analyse the combined in-plane/out-of-plane behaviour of unreinforced and strengthened infill walls
No full textReinforced concrete (RC) frame structures infilled with clay masonry walls represent a common construction practice worldwide. However, the significant interaction between in-plane (IP) and out-of-plane (OOP) response of the infill walls, and their brittle behaviour, can increase the seismic vulnerability of the building to both local and global mechanisms. Therefore, it is necessary to develop adequate tools to assess the seismic performance of infill panels. To this end, this paper presents a new macro-model for evaluating the IP/OOP behaviour of infill walls. The model consists of four strut elements, two for each diagonal of the wall, and two equal OOP masses placed in the centre of the panel; each strut is made of two beam-column elements that allow for the creation of a plastic hinge at the mid-span, where the non-linearity due to the IP/OOP interaction is concentrated and modelled through a nonlinear fibre section. The model is experimentally calibrated for four types of thin clay masonry panels, one unreinforced and three strengthened. To show the potential of the new infill model, a non-linear static analysis procedure is proposed for evaluating the lateral response of RC infilled frames. This simplified procedure is finally used in a parametric study that analyses various types of infilled frames. The results demonstrate the effectiveness of the proposed model, as well as of the strengthening solutions adopted to mitigate the IP/OOP interaction effects
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
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
mTOR and LC3 Gene and Protein Expression in Chronic Liver Disease and in Primary and Secondary Human Liver Cancer
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