1,721,010 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
Evidence of recurrent type I diabetes following HLA-mismatched pancreas transplantation
No full textSUMMARY - Type 1 diabetes mellitus is considered as an autoimmune disease against beta cells. Diabetes recurrence after pancreas transplantation is well known in HLA-identical twins while it is rarely reported in recipients of cadaveric pancreatic grafts. In the present case report, diabetes recurrence occurred in a recipient who underwent cadaveric combined pancreas kidney transplantation. Seven years after transplantation the patient exhibited progressive hyperglycemia needing insulin therapy while the renal graft was well functioning. The diagnosis of recurrent disease was obtained on the histological features such as selective loss of beta cells without clear signs of insulitis and on the presence of markers (GAD 65 and IA-2) for humoral autoimmunity. It is intriguing that, at the time of recurrence of type 1 diabetes, the patient had stopped steroids and azathioprine, while only cyclosporine was maintained as immunosuppressive treatment. Our case report underlines the relevance of studying the humoral autoimmune response directed to islet autoantigens in cadaveric pancreas allograft recipients. Furthermore, it suggests that an efficient immunosuppressive treatment after transplantation may be able to reduce the autoimmune response against the pancreatic allograft
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
Effect of venous drainage site on insulin action after simultaneous pancreas kidney transplantation
No full textBACKGROUND:
The aim of the present study was to determine the influence of the venous drainage site on insulin homeostasis in simultaneous pancreas-kidney (SPK) transplant recipients.
METHODS:
The study included 12 SPK patients with portal venous drainage (P) and 11 SPK patients with systemic venous drainage (S) of pancreas allograft. All of the participants presented similar characteristics. The euglycemic hyperinsulinemic clamp was performed using a 0.4-mU/kg/min insulin infusion. An infusion of [6,6-(2)H2] glucose was used to determine glucose turnover at the basal state and during the clamp to determine liver and peripheral tissue sensitivity to insulin.
RESULTS:
Minor changes in glycemia and insulinemia were shown: fasting plasma glucose was significantly higher in the SPK-P group and insulinemia was higher in the SPK-S group. Hepatic glucose production was similar in both groups. During the clamp, insulin levels were higher in SPK-S recipients, but hepatic glucose production was suppressed in both groups. Glucose use was lower in SPK-S recipients than in SPK-P recipients, 3.32 +/-1.41 mg/kg/min and 4.70 +/-1.64 mg/kg/min, respectively (P<0.02). Basal and under-clamp free fatty acid levels were similar. In addition, no significant difference in cholesterol and low-density lipoprotein levels was shown, whereas high-density lipoprotein levels were higher in the SPK-S group; triglycerides during fasting and under clamp were significantly higher in the SPK-P group.
CONCLUSIONS:
In both groups, neither hepatic nor peripheral insulin resistance was detected. In SPK-S recipients, the authors have showed only a lower insulin clearance and a slight decreased peripheral responsiveness to insulin without modifications of lipid status
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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