1,721,013 research outputs found
Weekly docetaxel as salvage therapy in patients with gemcitabine-refractory metastatic pancreatic cancer
No full textGemcitabine-based chemotherapy provides very limited disease control in the treatment of advanced pancreatic cancer. Approximately half of the patients failing upfront treatment present good performance status and are willing to undergo further treatment. Docetaxel activity against pancreatic cancer is reported both in the preclinical and clinical setting. Between November 2004 and November 2005, 10 patients (median age 59; median KPS 80) with metastatic pancreatic adenocarcinoma, progressive disease after gemcitabine-containing chemotherapy, KPS > 50, adequate organ function, were treated with weekly docetaxel at 30 mg/m(2) until progressive disease. Docetaxel dose intensity was 100% of the intended dose. No grade > 2 toxicity was observed. No objective response to treatment was obtained. Median progression-free survival was 1.5 months (range 1-3.5 months); median survival was 4.0 months (range 2.0-7.5). Weekly administration of single-agent docetaxel does not seem to have any activity in the treatment of gemcitabine-resistant metastatic pancreatic cancer
PEFG (cisplatin, epirubicin, 5-fluorouracil, gemcitabine) for patients with advanced pancreatic cancer: The ghost regimen
No full textThe consensus report of the International Society of Gastrointestinal Oncology on the therapeutic management of advanced pancreatic cancer is commented. In the context of the available literature, a critical and methodological analysis supporting the role of cisplatin, epirubicin, 5-fluorouracil, gemcitabine (PEFG) regimen in the treatment of unresectable and metastatic pancreatic cancer is provided. In particular, the clinical relevance of the outcome observed in the phase III trial comparing PEFG regimen to standard gemcitabine is highlighted. Results of other recent trials comparing gemcitabine-erlotinib, gemcitabine-capecitabine and gemcitabine-oxaliplatin combinations to single agent gemcitabine are briefly commented from a clinical perspective. (C) 2007 Elsevier Ireland Ltd. All rights reserved
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
Variations 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
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