1,720,985 research outputs found
Biopsy or bio-spy? The role of fine-needle aspiration cytology in pancreatic tuberculosis
Full text linkWe have read the interesting paper recently published by Ali et al., March, 8 volume, 1 issue, detailing a case of pancreatic mass in a 40-year-old male presenting with important weight loss, abdominal pain, and fever for 2 weeks. He denied any other complaint, history of tuberculosis, or drugs assumption.
Recently, we have observed a comparable case of pancreatic tuberculosis which in our opinion deserves a short mention, given the rarity of such presentation and the entailed diagnostic clinical and pathologic challenges, especially when dealing with patients coming from endemic areas for tuberculosi
Expression of p53, pRB, p21, p27 cyclin D1, Ki-67 and HPV presence in endophytic schneiderian papillomas
No full textNot availabl
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
Carcinoma spinocellulare della cervice uterina con estesa differenziazione sebacea e trichilemmale: descrizione di un caso e regione della letteratura
No full textVariations 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
Spitz nevus, spitz tumor, and spitzoid melanoma: a comprehensive clinicopathologic overview
No full textCornelia de Lange Syndrome: Expanding the Neuropathological Spectrum and Clinical Correlations
No full textObjectives: Reporting new neuropathological findings and clinicopathological correlations in Cornelia de Lange syndrome. Methods and results: Cornelia de Lange syndrome has received much attention for its genetics, biochemistry, clinical approach and management, but neuropathological studies are extremely rare. Diffuse hypoplasia of the entire brain, mainly affecting the frontal cortex and, less frequently, the cerebellum, has long been the paradigm for neuropathological findings in rare affected patients. This comprehensive neuropathological study of an affected newborn demonstrates nerve cell heterotopies, poor periventricular matrix and significant hypoplasia of both hippocampi, while Golgi staining of cerebellar tissue samples shows features of nerve cell immaturity. Conclusions: The importance of Cornelia de Lange syndrome as a cohesinopathy and some new neuropathological findings provide an opportunity to discuss and establish interesting clinicopathological correlations, especially with regard to the global intellectual disability of these patients
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
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