1,720,962 research outputs found
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
Early and long-term Results of pulmonary resection for non-small-cell lung cancer in patients over 75 years of age: A multi-institutional study
Full text linkOBJECTIVES:
Older lung cancer patients with multiple morbidities are increasingly referred to thoracic surgery departments. The aim of this multicenter study was to analyse the prognostic factors for in-hospital morbidity and mortality and to elucidate the predictors of long-term survival and oncological outcomes.
METHODS:
We identified 319 patients aged ≥ 75 years who underwent intended curative lung resection for lung cancer in three different thoracic surgery departments between January 2000 and December 2010.
RESULTS:
Seventy-one patients underwent limited resection, 202 had lobectomy, 16 had bilobectomy and 30 had pneumonectomy. The in-hospital mortality was 6.6%. Chronic renal failure, low respiratory reserve and pneumonectomy were predictors of in-hospital mortality. The mean follow-up time was 3.9 years, ranging from 1 month to 10.4 years. The disease-free survivals at 1, 3 and 5 years were 82, 60 and 47%, respectively. The overall survivals at 1, 3 and 5 years were 86, 59 and 38%, respectively. The long-term overall survival was negatively influenced by pneumonectomy, extended resection, N(1-2) subgroups and pathological TNM stage.
CONCLUSIONS:
Nowadays, we can consider surgery a safe and justifiable option for elderly patients. Careful preoperative work-up and selection are mandatory to gain satisfactory results. Good long-term results were achieved in elderly patients with early stage who underwent lobar or sublobar lung resection. The role of surgery or other alternative therapies, in patients with advanced stages, extensive nodal involvement and/or requiring extensive surgical resection for curative intent, is still unclear and further studies are certainly needed
Synchronous Thymoma and Lung Adenocarcinoma Treated with a Single Mini-invasive Approach
No full textA 75 year-old man with a lesion in the middle lobe of the lung was discovered to also have, during the follow-up period, a mass in the mediastinum, diagnosed as a multi-thymic cyst. Both pathologies were successfully treated with a single surgical approach by video-assisted thoracoscopy. We performed a middle VATS lobectomy with complete lymphadenectomy followed by radical thymectomy without additional incision. The postoperative course was uneventful.
Copyright © 2014 Australian and New Zealand Society of Cardiac and Thoracic Surgeons (ANZSCTS) and the Cardiac Society of Australia and New Zealand (CSANZ). Published by Elsevier B.V. All rights reserved
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
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
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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