1,721,052 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
Malignant histiocytosis in three cats.
No full textIntroduction: Malignant histiocytosis (MH) or disseminated histiocytic sarcoma is a systemic neoplastic proliferation of macrophages that is well characterized in dogs, but rare in cats, as only eight cases have been published in the international literature. In this report the clinical course and diagnostic findings of three feline patients with MH are presented, along with differential diagnosis considerations and a comparison with other cases described in the literature.
Materials and Methods: Samples for cytology were taken by fine needle aspiration and stained with May Grünwald-Giemsa. Tissue for light microscopy was fixed in buffered formalin. Sections were stained with haematoxylin and eosin, PAS, Masson trichrome, toluidine blue, Perls for haemosiderin, methyl green-pyronin and Buffalo black for haemoglobin. Immunohistochemistry was performed using an avidin-biotin-peroxidase technique for vimentin, CD3, CD79α, cytokeratin AE1/AE3, MAC387, MHC-II, and lysozyme. Small pieces of tissue were also post-fixed in osmium tetroxide, epon embedded, sectioned and stained for transmission electron microscopy (TEM).
Results: Case 1 was a 13 years old european male neutered cat presented with a laryngeal mass and moderate lymphadenopathy; case 2 was a 10 years old European male neutered cat with marked jaundice and hepatomegaly; case 3 had lumbar lymphadenopathy and hepato-splenomegaly. The FIV-FeLV status was negative in case 1, FIV+ in case 2 and unknown in case 3. All patients were markedly anaemic and the disease rapidly progresses to death. The main post mortem findings common to all cases were marked hepatomegaly and splenomegaly and moderate lymphadenopathy. Histology and cytology showed the infiltrative proliferation of large mononuclear and multinucleate round-to-polygonal atypical discrete cells, with huge and pleomorphic nuclei and nucleoli. These cells had abundant vacuolated cytoplasm and occasionally displayed erythrophagocytosis. Immunohistochemistry (vimentin and lysozyme expression) and TEM supported the morphologic hypothesis of histiocytic malignancies, and MH diagnosis was then formulated.
Conclusion: Diagnostic alternatives in our cases included systemic histiocytosis, histiocytic (anaplastic large cell) lymphoma, anaplastic systemic plasmacytoma and visceral histiocytic mast cell tumour, but histological, histochemical and immunohistochemical figures ruled them out. MH has been extensively described in dogs, and a genetic predilection has been recorded in Bernese mountain dogs, Rottweilers and Golden retrievers. Although no predisposing factors seem to be evident for feline MH, this disease should be considered in the differential diagnosis for cats with anaemia and hepato-splenomegaly
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
Apoptosis and anti-apoptotic heat shock proteins in canine cutaneous infundibular keratinizing acanthomas and squamous cell carcinomas
No full textCell stress and death are linked in the neoplastic process,and heat shock proteins appear to play an importantrole by inhibiting apoptotic pathways. The apoptoticrates in 9 canine infundibular keratinizing acanthomas(IKAs) and 17 canine squamous cell carcinomas(SCCs) were correlated with the immunohistochemicalexpression of caspase-3 and the antiapoptotic heatshock proteins Hsp27, 72 and 73. Apoptosis was evaluatedusing the terminal deoxynucleotidyl transferasebiotin-dUTP nick end labelling (TUNEL) method.The absence of a correlation between the TUNELindex and active-caspase-3 expression, a paucity ofactive-caspase-3-positive cells and Hsp72 overexpressionwere considered to be indicative ofinhibition of apoptosis, and suggestive that inhibitionof cell death plays a key role in oncogenesis andtumour growth of some canine skin neoplasms.[...
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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