1,721,070 research outputs found
Sur les modalités croire et savoir
No full textAlexandrescu Sorin. Sur les modalités croire et savoir. In: Langages, 10ᵉ année, n°43, 1976. Modalités : logique, linguistique, sémiotique, sous la direction de Ivan Darrault. pp. 19-27
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
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
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
Simultaneous versus staged resection for synchronous colorectal liver metastases: The win ratio approach
No full textIntroduction: In order to investigate the optimal approach for synchronous colorectal liver metastases (sCRLM), we sought to use the "win ratio" (WR), a novel statistical approach, to assess the relative benefit of simultaneous versus staged surgical treatment. Methods: Patients who underwent hepatectomy for sCRLM between 2008 and 2020 were identified from a multi-institutional database. The WR approach was utilized to compare composite outcomes of patients undergoing simultaneous versus staged resection. Results: Among 1116 patients, 642 (57.5%) presented with sCRLM; 290 (45.2%) underwent simultaneous resection, while 352 (54.8%) underwent staged resection. In assessing the composite outcome, staged resection yielded a WR of 1.59 (95%CI 1.47-1.71) over the simultaneous approach for sCRLM. The highest WR occurred among patients requiring major hepatectomy (WR = 1.93, 95%CI 1.77-2.10) compared with patients who required minor liver resection (WR = 1.55, 95%CI 1.44-1.70). Conclusions: Staged resection was superior to simultaneous resection for sCRLM based on a WR assessment
Resection of Colorectal Liver Metastasis: Prognostic Impact of Tumor Burden vs KRAS Mutational Status
No full textBACKGROUND: The prognostic impact of colorectal liver metastasis (CRLM) morphologic characteristics relative to KRAS mutational status after hepatic resection remains ill defined.STUDY DESIGN: Patients undergoing hepatectomy for CRLM between 2001 and 2018 were identified using an international multi-institutional database. Tumor burden score (TBS) was defined as distance from origin on a Cartesian plane that incorporated maximum tumor size (x-axis) and number of lesions (y-axis). Impact of TBS on overall survival (OS) relative to KRAS status (wild type [wtKRAS] vs mutated [mutKRAS]) was assessed.RESULTS: Among 1,361 patients, the median number of metastatic lesions was 2 (interquartile range [IQR] 1-3), and median size of the largest metastatic lesion was 3.0 cm (IQR 2.0-5.0 cm), resulting in a median TBS of 4.1 (IQR 2.8-6.1); KRAS status was wtKRAS (n = 420, 30.9%), mutKRAS (n = 251, 18.4%), and unknown (n = 690, 50.7%). Overall median and 5-year OS were 49.5 months (95% CI 45.2e53.8) and 43.2%, respectively. In examining the entire cohort, TBS was associated with long-term prognosis (5-year OS, low TBS: 49.4% vs high TBS: 36.7%), as was KRAS mutational status (5-year OS, wtKRAS: 48.2% vs mutKRAS: 31.1%; unknown KRAS: 44.0%)(both p < 0.01). Among patients with wtKRAS tumors, TBS was strongly associated with improved OS (5-year OS, low TBS: 59.1% vs high TBS: 38.4%, p = 0.002); however, TBS failed to discriminate long-term prognosis among patients with mutKRAS tumors (5-year OS, low TBS: 37.4% vs high TBS: 26.7%, p = 0.19). In fact, patients with high TBS/wtKRAS CRLM had comparable outcomes to patients with low TBS/mut KRAS tumors (5-year OS, 38.4% vs 37.4%, respectively; p = 0.59). On multivariable analysis, while TBS was associated with OS among patients with wtKRAS CRLM (hazard ratio 1.43, 95%CI 1.02-2.00; p = 0.03), TBS was not an independent predictor of survival among patients with mutKRAS CRLM (HR 1.36, 95%CI 0.92-1.99; p = 0.12).CONCLUSIONS: While TBS was associated with survival among patients with wtKRAS tumors, CRLM morphology was not predictive of long-term outcomes among patients with mutKRAS CRLM. (C) 2020 by the American College of Surgeons. Published by Elsevier Inc. All rights reserved
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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