1,720,962 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
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
Can a CT Scan Predict the Spread of Oral Cancer to the Neck? A Diagnostic and Histopathological Review
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Cerebral Venous Sinus Thrombosis: Case Series across Various Age Groups, Presentations, and Imaging Characteristics
Full text linkCerebral venous sinus thrombosis (CVST) is a relatively rare and potentially life-threatening condition among different age groups with multiple etiological factors. The following report illustrates three cases of CVST representing a variety of demographics and risk factors for this condition, highlighting the importance of radiological imaging in its recognition. Case 1 a 13-year-old female with measles who was confused and found to have meningoencephalitis, had imaging evidence of deep venous sinus thrombosis. Case 2 is that of a 51-day-old newborn who presented with lethargy, and seizures and was found on CT to have global ischemic venous infarction that was contributed to by anemia and dehydration; Case 3 is of a 30-year-old female without past illness who had a feverish headache and vomiting, as CT imaging revealed thrombosis in multiple venous sinuses. This discussion also points to the intricate pathophysiology of CVST, triggered by infection, dehydration and coagulopathy as the constituents for a deep understanding that requires immediate imaging in cases of suspicion in all age populations
Cholangiocarcinoma Complicated by Cholangitic Abcsess: A Diagnostic Challenge
Full text linkCholangiocarcinoma (CCA) is the second most frequent type of liver cancer, after hepatocellular carcinoma. The presence of luminal cholangiocarcinoma with cholangitic abscesses complicates diagnosis and management further.
Cholangiocarcinoma is one of the commonest liver tumours, and its complications do occur early in the disease course as it blocks the bile ducts. Cholangitic abscess is not one of the common complications, and patients present late because distinguishing it from other disorders is quite difficult.
Here, we discuss the case that encountered our hospital setting, discussing clinical signs and symptoms of cholangiocarcinoma with cholangitic abscess, emphasizing the importance of imaging findings from Computed Tomography (CT) and ERCP (endoscopic retrograde cholangiopancreatography) for accurate diagnosis.
As CT is readily available, it is the preferred modality because it can assess the original tumor as well as its complications, just like a cholangitic abscess, as in this case
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