1,720,958 research outputs found
Problems of leaning column modeling in common structural software
No full textThe work herein presented concerns the modelling of a Moment Resisting steel frame within SeismoStruct computer program. In particular, it focuses on how it is possible to take into account the second order effects, structure effects, in order to best reproduce the real structure behaviour. It is well known a way to consider second-order effects on a frame is add a leaning column to this one. But how leaning column may be modelled and how it influences the results of frame analysis
Comments on IDA analysis results for MRFs with and without FREEDAM connections
No full textThe work hereinafter discussed concerns the evaluation of the seismic performances of a traditional Moment Resisting Frame and a Moment Resisting Frame equipped with friction dampers, called "FREEDAM". A multi-records IDA analysis has been performed and the results have been evaluated in terms of interstorey drift for each storey
Experimental validation of a theoretical model accounting for floor joists contribution on the flexural resistance of beam-column joints in R. C. frames
No full textThe slab plays an important role in seismic response of reinforced concrete (RC) Structures because it allows to actively distribute the seismic actions among all the resistant primary elements. However, its contribution cannot be relegated to simple rigid diaphragm but its capacity of increasing strength and stiffness in beam-to-column joints must be considered. Although some experimental campaign were performed to prove that the slab contribution in terms of resistance cannot be neglected, the current seismic European code (Eurocode 8) does not provide a proper formulation to estimate the actual contribution of the slab in terms of strength and stiffness on the seismic response of RC buildings. To this scope, in the present work, an experimental campaign on six RC beam-to-column joints with and without floor slab were carried out by performing both monotonic and cyclic tests. The main research goal is the validation through an experimental evidence of the effectiveness of the theoretical formulations proposed in previous works, able to evaluate the deck contribution in the beam-to-column joint resistance. In particular, reference is made to RC joists with upper slab and interlaid tiles monolithically cast with the beams, which is a constructive typology largely spread in the Mediterranean area
Design and analysis of dual EBFs equipped with prequalified connections
No full textThe aim of this work is to present the results of the design of Dual-Eccentrically Braced Frames (D-EBFs) according to the Theory of Plastic Mechanism Control. These frames are equipped with four prequalified connection typologies, analysed in the framework of the RFCS founded EqualJoints Plus research project. They are first designed disregarding the presence of the joints and after that accounting for it. The seismic performances of the structures are investigated by both pushover and non-linear dynamic analysis
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
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