1,720,985 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Reinforced Concrete Beams with Opening Strengthened using CFRP Sheets
Get PDFThis study explores the behavior of reinforced concrete beam with opening strengthened using CFRP sheets. The beams were deficient in bending and under-reinforced in order for the beams to fail in bending. Load-deflection behavior and strain profile were observed besides the crack pattern and modes of failure. A total of five (5) beams were casted and tested. One (1) beam was treated as control specimen, two (2) beams were reinforced concrete beams with square and circular opening respectively while the other two (2) beams were reinforced concrete beams with square and circular opening strengthened using CFRP sheets. For the strengthened beams, they were wrapped at three sides (U-wrap) of the beams with CFRP sheets. From the experimental results, it is observed that all beams fail in bending as expected. Beam with circular opening (un-strengthened) recorded the lowest ultimate load with 25.7 kN, a decreased for about 6.4% compared to control specimen. On the other hand, beams with circular opening strengthened using CFRP sheets recorded the highest ultimate load of 30.7 kN, which is an increased for about 11.9% compared to control specimen. The conclusion that can be drawn from this study is CFRP sheets can be used to increase the ultimate load of beam with the presence of opening
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Shear strengthening of pre-cracked and non pre cracked reinforced concrete continuous beams using bi directional CFRP strips
No full textShear failure of a reinforced concrete beam is catastrophic where it occurs suddenly
and without any warning. The use of FRP sheet as a strengthening and repairing
material is an effective method to enhance the shear capacity of the beam. Extensive
researches have been conducted on the shear strengthening of reinforced concrete
simply supported beams using FRP composites. However, strengthening continuous
beams in shear have received very little attention among the researchers although
most of the existing structures are in the form of continuous condition. Furthermore,
there are restraints to add shear reinforcement to the existing reinforced concrete
beams when beams are part of the floor-beam system. In the design guideline by
ACI 440 Committee mentioned that the existing theoretical model have not been
confirmed to be use for strengthening in negative moment region which existed in
continuous beam. Therefore, in order to address the problem, a study on shear
strengthening of reinforced concrete continuous beam using CFRP strips was
conducted. An experimental work on 14 full-scale reinforced concrete continuous
beams with a size of 150x350x5800mm was carried out. Simulation using finite
element software ATENA v4 and theoretical analysis was also conducted. The
variables involved a number of CFRP strips layers (one and two layers), wrapping
schemes (four sides and three sides), orientation of CFRP strips (0/90 and 45/135
degree) and shear span to effective depth ratio, av/d (2.5 and 3.5). The type of FRP
used was bi-directional CFRP strips. Two beams were un-strengthened and treated
as the control specimens whilst the other 12 beam were wrapped with CFRP strips.
From the experimental results, all beams failed in shear as expected. Beams wrapped
with CFRP strips recorded shear capacity enhancement of around 10.12% to 53.74%
compared to the control specimens. Beam wrapped with two layers of CFRP strips at
four sides of the beam recorded the highest shear enhancement. Simulation study
also showed similar behaviour in terms of shear capacity and crack patterns. Three
existing theoretical models; ACI 440, Khalifa and Nanni and fib models were
adopted for theoretical comparison of shear capacity contributed by CFRP, Vf while
for shear capacity contributed by concrete, Vc and stirrups, Vs, the equation from
ACI 318-08, BS8110 and EC2 was adopted. The ACI 440 model had shown the
closer value with the experimental results and a modified ACI 440 model was
proposed on the effective strain limit and bond-reduction coefficient
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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