1,721,018 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
Interferon alpha (IFN-[alpha]) in treatment of malignant diseases
Get PDFThere are several natural varieties of IFN-alpha in clinical use. Although IFNs were the first cytokines in use as a new treatment modality, we still know little about their mode of action in malignancies. IFN-alpha can inhibit cell growth, but it has been shown only recently, on malignant cells from patients with multiple myeloma, that IFN-alpha can exert a direct cytotoxic effect on tumor cells. The treatment with natural leucocyte IFN-alpha in dosesused in the early clinical trials, are still most widely used. It has been shown that through a high local concentration by local application in malignant melanoma, basalioma, pleural carcinosis, glioblastoma, total local tumor control may be achieved. it is thys not known what the optimal doses of IFN-alpha are, and they may vary by the tumor type, as well as from patient topatient. The neccessary duration of treatment also remains an open question.IFNs are a tool for treatment of malignant tumors. Their cytotoxic effect, however, is not strong enough and does not last. At present, there is a vast field of investigative work stil open-but in the meantime it seems necessary to proceed with clinical trials of different types of IFN, the natural IFN-alpha again beeing the most interesting one
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
Ozdravljenje raka sámo ni dovolj
Get PDFNaše dosedanje izkušnje in izkušnje drugod jasno utemeljujejo potrebo dosmrtnega spremljanja bolnikov, ozdravelih od raka v otroštvu. Glede na to, da se enake težave in posledice zdravljenja raka verjetno pojavljajo tudi pri drugih bolnikih, ki imajo pred seboj še dolgo življenje, je potrebno dosmrtno spremljanje vseh nekdanjih bolnikov, ki so zboleli v mladosti
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