1,720,963 research outputs found
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
Is now the time to reconsider risks, benefits, and limitations of estrogen preparations as a treatment for menstrually related migraine?
No full textIntroduction: Estrogen fluctuations modulate pain threshold and play a pivotal role in the central and peripheral pathogenesis of menstrually related migraine (MRM). Estrogen-withdrawal during the perimenstrual phase of a spontaneous menstrual cycle or the hormone-free interval (HFI) of hormonal treatments seems to be the culprit. Area covered: The authors report the most relevant data on risks, benefits, and limitations of exogenous estrogens as a treatment for MRM considering gynecological comorbidities associated with chronic pelvic pain that may be effectively managed by the use of combined hormonal contraception (CHC). Given that migraine and CHC are both currently known as independent risk factors for stroke, levels of evidence contraindicate CHC in women with migraine with aura, whereas quality of evidence is low in women with migraine without aura, including MRM. Continuous/extended/flexible CHC regimens, shorter HFI, or estrogens supplementation during the HFI/perimenstrual spontaneous phase may be beneficial in women with MRM. Expert opinion: Safety is a main issue, and it is mandatory to investigate the impact of CHC containing natural estrogens, instead of ethinylestradiol, on clinical pattern of MRM and cardiovascular associated risk. Reproductive characteristics may be relevant and should be considered in a multidisciplinary approach to increase the power of endocrine management in MRM
Efficacy and safety of a device that combines multipolar radiofrequency with pulsed electromagnetic field for the treatment of vulvovaginal atrophy: a randomized, sham-controlled trial
No full textBackground: Vulvovaginal atrophy (VVA) negatively affects the sexual well-being and quality of life of postmenopausal women, yet it is underreported and undertreated. Aim: The study sought to investigate the efficacy and safety of a nonablative, noncoagulative multipolar radiofrequency (RF) and pulsed electromagnetic field–based device (PEMF) in treatment of symptoms related to VVA. Methods: Seventy-six women ≥19 years of age with symptoms associated with VVA were enrolled into this prospective, randomized, sham-controlled, multicenter clinical study. Subjects were randomized to receive 3 RF + PEMF treatments (active group) or sham treatments (sham group) delivered to vaginal tissue at monthly intervals. The Vaginal Health Index (VHI), along with the Female Sexual Function Index (FSFI), subject sexual satisfaction and vaginal laxity (VL) score, treatment-associated pain, and adverse events were assessed at 4 follow-up (FU) visits between 1 and 12 months after treatment. Outcomes: Changes from baseline VHI, pH, FSFI, VL, and sexual satisfaction scores between the active and sham groups were compared before and after treatment. Results: Mean VHI scores in the active group were significantly better compared with the sham group after treatment at all but the last FU visit (P < .001). A greater decrease in pH (active over sham) was seen at 1 and 4 months after treatment (P < .05). FSFI improvement was shown in the active group; however, it was not significantly better than sham improvement at all FU visits. Subject sexual satisfaction in the active group showed better improvement over sham at all FU visits (P < .05), while VL evaluations saw greater improvement in the active group at 4, 6, and 12 months posttreatment (P < .05). Treatment satisfaction was greater in the active group and pain was minimal in both groups. No serious adverse effects were reported. Clinical Implications: As a noninvasive alternative to traditional surgical and topical procedures, 3 sessions of noninvasive combination RF/PEMF safely demonstrated improvement in symptoms related to VVA. Strengths and Limitations: This study was strengthened by the randomized, sham-controlled design; large sample size; and extended FU period. The study assessments were decreased at later FU visits due to the global COVID pandemic, and this was a key limitation to the study. Conclusion: Nonablative, noncoagulative multipolar RF/PEMF therapy was safe, improved symptoms associated with VVA, and improved female sexual function while yielding high subject satisfaction
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
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
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