1,720,967 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
Unilateral renal cystoadenocarcinoma and nodular dermatofibrosis (RCND) in a mixed-breed dog carring FLCN gene mutation
No full textBackground: Renal cystadenocarcinoma and nodular dermatofibrosis (RCND) is a rare inherited cancer syndrome observed predominantly in the German shepherd dog breed, known to be associated with dominant autosomal transmission of mutation H255R of the encoding folliculin gene (FLCN). The syndrome usually features bilateral, multifocal kidney tumours and skin nodules, consisting of dense collagen fibres, with previous reports showing a poor prognosis. Although historically nodular dermatofibrosis (ND) has been considered a paraneoplastic syndrome associated with renal cystadenocarcinoma; this hypothesis has been questioned. Objectives: To report a case of unilateral renal adenocarcinoma in a dog with RCND syndrome, with 40-month follow-up. Animal: A neutered 5-year-old female, mixed-breed dog. Methods and materials: Nodular dermatofibrosis was confirmed with histopathological evaluation. Contrast-enhanced ultrasound (CEUS) supported a presumptive diagnosis of unilateral renal neoplasia and the kidney was removed. Results: Nodular dermatofibrosis with unilateral RC was confirmed by histopathological evaluation and DNA sequencing; this was positive for the heterozygous form for the H255R mutation in the FLCN gene. Follow-up at 40 months after nephrectomy showed progressive increase in the size and number of nodular lesions. Conclusion and clinical importance: This case supports the hypothesis that nodular dermatofibrosis is not a paraneoplastic syndrome associated with cystadenocarcinoma. It may be instead an independent dermatological feature of the same genetic disease, linked to the mutation of FLCN given that the cutaneous nodules in this dog increased in size and number after removal of the adenocarcinoma. © 2019 ESVD and ACV
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
The use of ultrasound investigation to identify lines along sea turtle intestinal tract and evaluation of the correlated damages
No full textAccidental hook and line ingestion can cause serious damages to the digestive tract of sea turtles, representing one of the most frequent problems to be faced during their care and rehabilitation. Radiographic examination easily identify hooks, but lines can not be detected as they are radiolucent, limiting the ability of diagnosing their presence, as to evaluate their extension into the digestive canal. And even if the presence of a line is evident because it protrudes from the mouth or the cloaca, it’s not possible to detect any injury caused to the intestinal walls, evident only during surgery.
In this study two juvenile loggerhead sea turtles (Caretta caretta), with a line coming out from the cloaca, underwent to ultrasound examination. X-rays had shown a hook lodged into the wall of the cervical esophagus. The ultrasound scans were performed through the cervicobrachial, axillary and prefemoral right and left acoustic windows. The transducer was oriented parallel to the plastron with cranial marker to obtain longitudinal scans , for transverse scans the transducer was rotated 90° anticlockwise with dorsal marker. More diagnostic significant images and movies were obtained by ultrasound scans through the right acoustic prefemoral window. In both cases, it was evident the presence of an abundant amount of particulate fluid in the coelomic cavity. In one turtle it was possible to explore a long tract of the small intestine that showed irregular and tortuous course, with a plicate pattern and a linear intraluminal shadow highly reflective, with a distinct posterior acoustic shadow, compatible with a packaging intestinal loop. The stratigraphy of the intestine showed normal conditions, but the luminal contents of the loop were not detectable for their stretch around the mesentery. In the other case there was a reflective linearity in the coelomic cavity, with a weak posterior acoustic shadow. Moreover, it was detectable a clear dissection of the intestinal wall, small tears and alteration of the intestinal tract stratigraphy.
In both cases, the exposure of the intestine during surgery has revealed the extension of the intestinal walls alterations and the severity of injuries, reflecting what was detected by ultrasound examination and confirming the authors’ opinion. Ultrasound examination may provide a valuable support in assessing the extention and severity of digestive tract lesions, caused by the tension of ingested lines. This valuable diagnostic ability has a real important prognostic value, allowing a better adequate planning of surgery
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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