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
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
"Synovitis, acne, pustulosis, hyperostosis and osteitis (SAPHO) syndrome": Comment on the article by Zhao et al
No full textWe read with great interest the article by Zhao et al.,1 recently published in The Journal of Dermatology, regarding an emblematic case of synovitis, acne, pustulosis, hyperostosis and osteitis (SAPHO) syndrome. We fully agree with Zhao et al., both on the importance of an early diagnosis and on the detrimental consequences of a delayed diagnosis on various aspects of quality of life. In 1987, Chamot and Kahn suggested the acronym SAPHO in order to unify various conditions characterized mainly by the variable association of osteitic ⁄ hyperostotic lesions of the anterior chest
wall (ACW) and several skin disorders, such as palmoplantar pustulosis,severe acne and hidradenitis suppurativa. Less commonly described are Sneddon–Wilkinson disease and other neutrophilic dermatoses, namely Sweet syndrome and pyoderma gangrenosum. Inclusion of psoriasis vulgaris as the only skin lesion is still being discussed and should be considered only in patients with a typical sternocostoclavicular hyperostosis.2 We also agree with
Zhao et al. that SAPHO syndrome could be underestimated
because the cutaneous lesions may be transient, or also absent. Skin manifestations usually precede the onset of osteoarticular complaints, therefore an effort for greater awareness of the ACW pain syndromes is needed among dermatologists.
The nosological framing of SAPHO syndrome is still a matter of
debate. Although it has repeatedly been related to the spondyloarthropathy family, emerging evidence suggests that SAPHO syndrome could be a primitive inflammatory osteitis, probably related to polygenic auto-inflammatory disorders. Our previous finding of a dysregulation of the extracellular adenosine triphosphate-dependent
P2X7–IL1b axis in a case of SAPHO syndrome effectively treated with the interleukin (IL)-1 receptor antagonist anakinra seems to suggest that SAPHO syndrome should be included in the growing family of polygenic auto-inflammatory disorders.3 Different stimuli have been implicated as possible inciting factors, in particular Propionibacterium
acnes, either alive or as dead antigen.4
So far, our work, previously published in Arthritis Care &
Research, represents the largest published series since the 1980s, with a median follow-up duration of 11 years.5 In agreement with Zhao et al., we found that the course of the disease was variable. In particular, nine patients presented with a limited course lasting less than 6 months but more than 3 months, with a single episode that afterward faded away. In these subjects, no disease flares occurred during a median follow up of 8 years. In 25 cases, after a first, limited course of less than 6 months, the patients experienced multiple
remissions and exacerbations. In these patients, the duration
of the flares was 2–8 months and they did not demonstrate any apparent periodicity or recurrence.
Thirty-seven patients, representing 52% of our series, had a
chronic course characterized by fluctuating intermittent periods of exacerbations and short improvements, requiring almost continuous treatment. We also demonstrated that female sex, elevated erythrocyte sedimentation rate and C-reactive protein values, ACW involvement, peripheral synovitis, and the occurrence of two or more skin lesions at the onset are associated with a chronic course.
In conclusion, we agree that diagnostic delays are important and that early recognition of SAPHO syndrome is of great importance. Therefore, as Zhao et al. affirmed, we firmly hope that nonrheumatological specialists, such as dermatologists, but also general practitioners and internists, will have greater confidence in recognizing this condition
- …
