1,721,035 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
Introducing Amyotrophic lateral sclerosis.
No full textIntroducing ALS at present times leads to re-define the concept of motor neuron selectivity which characterizes this
disorder. In fact, multiple systems including skin, liver, and bone marrow are altered in ALS patients. The motor
neuron is still the focus of the disorder and the extended pathology did not modify the concept of ALS as a devastating
disorder based on motor neuron loss. Nonetheless, the involvement of non-motor neurons as well as areas
outside the central nervous system leads to a different perspective to understand the causes, pathophysiology and
therapy of ALS. For this reason a specific issue is dedicated to understand whether intersecting basic, pre-clinical
and clinical knowledge of ALS may lead to a coherent novel scenario allowing to translate basic findings into clinical
practice. Several pre-clinical issues described in this volume appear robust enough to indicate that we should
modify a number of approaches when designing future therapeutic strategies. Similarly, novel investigations based
on altered cell to cell communication are needed to further progress in understanding amyotrophic lateral sclerosis
Future therapeutical strategies dictated by pre-clinical evidence in ALS.
No full textClassic concepts on amyotrophic lateral sclerosis led to define the disease as a selective degeneration of upper
and lower motor neurons. At present such selectivity is questioned by novel findings. For instance, the occurrence
of frontotemporal dementia is now increasingly recognized in the course of ALS. Again, areas outside the central
nervous system are targeted in ALS. In keeping with motor areas other cell types surrounding motor neurons
such as glia and interneurons are key in the pathogenesis of ALS. This multiple cell involvement may be due to a
prion-like diffusion of specific misfolded proteins which are altered in ALS. This is the case of FUS and TDP-43
which harbor a prion domain prone to pathological misfolding. These misfolded proteins are metabolized by the
autophagy, but in ALS there is evidence for a specific deficit of autophagy which impedes the clearance of these
proteins. These concepts lead to re-analyze the potential therapeutics of ALS. In fact, mere cell substitution (stem
cell) therapy appears insufficient to contrast all the alterations in the various pathways affected by ALS. Although
preclinical data speed the application of stem cells in human clinical trials, several hurdles limit their translation
into new therapies. Future treatments are expected to consider the need to target both motor neurons and neighboring
cells which may contribute to the diffusion and persistence of the disease. On this basis the present manuscript
describes which future strategies need to be pursued in order to design optimal therapeutic trial in ALS
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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