1,721,023 research outputs found
Single organ cutaneous vasculitis: Case definition & guidelines for data collection, analysis, and presentation of immunization safety data
No full textVasculitides are a group of heterogeneous conditions character- ized by inflammation of blood vessel wall, which can occur in any organ system. Cutaneous involvement occurs almost exclusively with vasculitis of small and medium-sized vessels [1]. Cutaneous vasculitis (CV) may be: (a) a single organ disease limited to the skin, (b) primary CV with secondary systemic involvement, or (c) a cutaneous manifestation of systemic vasculitis [1]. Several classifications and definitions have been proposed for vasculitides, for example those published by the American College of Rheumatology and the Chapel Hill Consensus Conference (CHCC), but they all have various limitations [2–4]. The prolifera- tion of names for CV is principally due to the fact that various dis- orders can be associated with small-vessel vasculitis of the skin: sometimes it is only cutaneous and in other cases there can be other organ involvement [5]. In 1952, upon the first classification, the term ‘‘hypersensitivity vasculitis” (HV) was coined to distinguish forms of necrotizing arteritis of small vessels from polyarteritis nodosa (PAN), which involved larger vessels. HV derives its name from animal models of vasculitis induced by horse serum or drug administration to cause hypersensitivity reactions [5]. Subsequently, the term has been refined to denote small vessel vasculitis confined mainly to the skin and not associated with any other primary vasculitis (i.e. Henoch-Schoenlein purpura, granulomatosis with polyangiitis or cryoglobulinemia). The 1994 CHCC proposed an alternative term for HV - ‘‘cutaneous leukocytoclastic angiitis” because of the fre- quent failure to identify a precipitant factor for hypersensitivity reaction. This term was also problematic because histological fea- tures were not always consistent with this clinical phenotype [5]. The more comprehensive definition of cutaneous small vessel vas- culitis (CSVV), which includes clinical and histological features of HV and leukocytoclastic vasculitis irrespective of a possible trig- gering factor is also used. More recently, the 2012 revised CHCC nomenclature recommended that for single organ vasculitis, which is applied to vasculitis in arteries or veins of any size in a single organ that has no features that indicate that it is a limited expres- sion of a systemic vasculitis, the involved organ and vessel type should be included in the name (e.g. cutaneous small vessel vas- culitis) [4]. Therefore, for this case definition we adopted the term single organ cutaneous vasculitis (SOCV), which refers to small vessel vasculitis of the skin where systemic involvement has been excluded
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
Immunization in pregnancy clinical research in low- and middle- income countries - study design, regulatory and safety considerations
No full textAuthor-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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