1,720,957 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
[Appropriate hospital utilization in emergency surgery: application of the Appropiatness Evaluation Protocol].
No full textThe Authors developed and tested a new version of the Appropriateness Evaluation Protocol (AEP) to review 160 clinical records of the Emergency Surgery Department of Policlinico Umberto I-Rome. The modifications to the AEP also allow to evaluate the appropriate ward of hospitalization of acute patients (Surgery, Orthopedics, Head & Neck, Burns). 26 (16%) out 160 admissions failed the AEP criteria; 85 of the remaining admissions were judged appropriate in the Emergency Surgery Department (53% of the whole sample), 14 (9%) in the Head & Neck Department, 10 (6%) in the Orthopedic Department, 25 (16%) not in an Emergency Surgery Department. Only 63% of the appropriate admissions has been judged adequate in the Emergency Surgery Department. The Authors conclude that it is necessary to improve the primary "filter" of the hospitalization (the ambulatory care component of the National Health System). Finally, this version of the AEP was shown to be reliable, an useful tool in the hands of trained physicians
Cutaneous melanoma with neurofibromatosis type 1: rare association? A case report and review of the literature.
No full textNeurofibromatosis (NF) is a relatively common disorder characterized by cutaneous pigmented maculas, multiple neurofibromas and Lisch nodules (pigmented iris hamartomas). This disorder is retained being a neurocristopathy. Melanocytes are neural crest derivates too. Twenty-six patients with neurofibromatosis associated to cutaneous malignant melanoma have been reported till now, but data on association between these two pathologies are lacking. One more case of malignant cutaneous melanoma in a patient with neurofibromatosis is reported and the hypothesis of a more frequent association than usually believed of these two pathologies is 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
[Desmoid tumor of rectus muscle of abdomen in a woman of childbearing age: what can we do?].
No full textThe desmoid tumor (DT) is a soft tissue neoplasm most frequently localized in the anterior abdominal wall typically in females of childbearing age. Because its particular incidence in women who had recently been pregnant, it was correlated with delivery's trauma stimulating proliferation of muscolo-aponeurotic tissues. Complete surgical resection is the recommended treatment approach to prevent recurrence. Many authors emphasize the role of radiotherapy in regression of DT and in controlling local recurrence in patient who had incomplete resection. Many others emphasize the role of chemotherapy or antiestrogenic compounds, even though tumour does not express estrogen receptors. DT, otherwise, is neoplasm with high rates of recurrence after surgery but it never develops distant metastases, so that function and structure-sparing surgery may be a reasonable choice in young women when possible without leaving macroscopic residual disease. Furthermore literature data suggest that the presence of incomplete histological surgical resection does not correlate with local recurrence and that pregnancy does not represent a risk factor. In women of childbearing age, even after non radical histological DT primary resection, adjunctive radiotherapy, chemotherapy or antiestrogen therapy could be avoided and clinical observation alone may be considered
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
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