1,720,954 research outputs found
Self-Growing Neural Mechanisms for Pattern Categorization in Robotics
No full textWollongong (Australia
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
CD10 is a characteristic marker of tumours forming morules with biotin-rich, optically clear nuclei that occur in different organs.
No full textRecently, Chiarelli et al.1 have demonstrated that CD10 immunoreactivity represents a useful marker of morules in endometrioid lesions of the female genital tract, allowing identification of various low-grade lesions which are associated with these nodular structures. Cytologically, morules exhibit bland cells lacking intercellular bridges and keratinization and express neither high-molecular-weight keratins2–5 nor involucrin.6 They are not related to human papillomavirus infection6 and are thus different from both squamous metaplasia and carcinoma.1 Morules with a characteristic nuclear clearing have been reported in endometria,ovarian endometrioid tumours,colorectal adenomas and carcinomas,13–15 gastric polyps,16 gallbladder adenomas,17 pulmonary blastomas, low-grade adenocarcinomas of fetal lung type, some papillary lung carcinomas,18–24 pancreatoblastomas25,26 and, finally, in the cribriform-morular variant (C-MV) of papillary thyroid carcinomas.2–5,27–29 The so-called ‘peculiar nuclear clearing’ so frequently found in these morules is due to biotin-rich intranuclear inclusions which ultrastructurally have the appearance of thread-like fibrils and consequently should not be misinterpreted as intranuclear cytoplasmic pseudoinclusions or as viral inclusion bodies.2,3,15,19,30,31
In order to demonstrate the usefulness of CD10 in the diagnosis of morular metaplasia in neoplasms in extragenital locations, the immunoexpression of CD10 and β-catenin was studied in seven cases of tumours containing morules with cells displaying biotin-rich optically clear nuclei (BROCN; BROCN-family tumours), corresponding to four instances of CM-V of papillary thyroid carcinoma (one of them in the setting of familial adenomatous polyposis), one case of low-grade adenocarcinoma of fetal lung type, one case of pulmonary blastoma and one pancreatoblastoma in a child with Beckwith–Wiedemann syndrome (Figure 1). Immunohistochemistry was performed on paraffin sections using a universal secondary antibody kit that used a peroxidase-conjugated labelled-dextran polymer (Dako EnVision Peroxidase/diaminobenxidene; Dako, Glostrup, Denmark), in order to avoid misinterpreting endogenous biotin or biotin-like activity in the cell cytoplasm or nuclei as immunopositivity.32 All cases revealed strong CD10 membranous positivity (clone 56C6, dilution 1:10, microwave oven, Tris—ethylenediamine tetraaceticacid; NovoCastra, Newcastle-upon-Tyne, UK) in morules (Figure 1), with some cytoplasmic staining, probably due to diffusion. As a result, CD10 positivity allowed easy identification of morules at low power in the different samples. CD10 immunopositivity also outlined the luminal borders of the neoplastic cells in the glandular formations of all tumours. Aberrant nuclear expression of β-catenin (β-catenin-1, 1:300, microwave oven; Dako) was detected only in neoplastic cells of all samples examined (Figure 1). Squamous metaplasia was negative for CD10, and a membranous but no nuclear pattern of reactivity for β-catenin was seen in a case of the diffuse sclerosing variant (DSV) of papillary thyroid carcinoma concurrently studied as a control
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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