1,721,337 research outputs found
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
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
Clinical approaches to vaccination in oncology
No full textImmunotherapy of cancer is still in the early stages of development although almost a century has passed since initial attempts were made to stimulate the immune system in order to destroy malignant cells. Historically, a Variety of specific and non-specific immunostimulatory strategies have been administered with only modest clinical success. However, recent advances in tumour immunology, most notably the identification of new tumour antigens and the better understanding of antigen processing and presentation to avoid or break immune tolerance, have paved the way for the development of a variety of novel and specific vaccine approaches. The most important and widely used are whole-cell vaccines, dendritic-cell-based immunotherapy and peptide vaccines. The first wave of clinical trials has revealed that, in general, such vaccination strategies are safe. However, clear examples of clinical responses, especially in conjunction with vaccine-induced immune responses, are still rare. Most clinical trials are too small to allow for comments on the efficacy, and the cohort of patients studied is too heterogeneous with regard to immune status. Therefore, standardised techniques for the accurate assessment of the individual immune phenotype before and during the trial are needed to allow for the identification of the sub-group of patients who will respond favourably to treatment. The precise definition of immune parameters in these patients will then lead the way for optimised treatment procedures that might even be beneficial for a larger group of cancer patients
A simple and reliable method for the determination and localization of chitin in abalone nacre
No full textWe collected test reactions which can be applied in an easy and reproducible way to the chemical composition of the abalone organic matrix. Several chemical and biochemical test reactions were applied to the interlamellar organic matrix of abalone nacre to study the content and nature of polysaccharides. The preparation of the polysaccharide matrix was examined in parallel by light microscopy. The polysaccharide core is covered by a honeycomb-like structure, which can be completely removed by the protease subtilisin under release of the hydrophobic amino acid proline. The honeycomb pattern is in its size and its shape exactly the inverse matrix of the aragonite tablets, which are well-known to build up the nacreous layer of abalone shells. With this protocol we proved and verified in a straightforward and simple way the polysaccharides in abalone to be chitin. In addition, H-1 and C-13 NMR analysis of the interlamellar organic matrix of abalone nacre confirmed that it consists to a high extent of the polysaccharide chitosan or its partially/completely N-acetylated derivative chitin (beta-(1-->4)-2-acetamido-2-deOXY-D-glucose or N-acetyl-D-glucosamine)
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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