1,720,981 research outputs found
Bond of GFRP Strips on Brickwork
Full text linkFiber reinforced polymers (FRP) have been increasingly popular over the past decades in civil engineering, even for the purpose of strengthening unreinforced brickwork. The primary aim of utilizing FRP on masonry walls is to enhance their strength and displacements. To strengthen cross walls and increase tensile capacity during an earthquake, it may be convenient to use externally bonded (EB) Glass-FRP strips. This strengthening system is affected by loss of bond with delamination of GFRP strips from surface of bricks.The investigation’s findings regarding the bond between GFRP strips and modern brickwork masonry surfaces are presented in this paper. Pull-push shear tests were performed on brickwork specimens with different thickness of bed mortar joints strengthened by EB-GFRP strips. Failure’s modes are described with shear-slip laws and energy fracture values
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
Detection of Damage in CFRP Lamina by Static and Dynamic Tests
No full textRecently, the monitoring of FRP elements through damage detection has become one of the most important aspects of the use of Fiber-Reinforced Polymers (FRPs) in civil engineering, both in the rehabilitation of existing structures and in the construction of new ones. Non-destructive methods based on experimental vibration monitoring can adequately perform this task. FRP structures change their dynamics due to actual damage from defects, loss of integrity, and cracking of the FRP material due to overloading during service or damage. The response of Carbon-FRP lamina to vibration with damage has been studied experimentally, considering as damage variation pf frequency values due to tensile tests up to 80% of strength. Below are the changes in natural frequency values obtained from dynamic tests that are related to the degree of damage to CFRP laminas. A numerical model has been developed for a theoretical study of damaged CFRP laminas under vibration. The theoretical frequency values are compared with those obtained from experimental tests
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
Proceedings of the International Conference of Steel and Composite for Engineering Structures ICSCES 2023
No full textDispelling 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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