1,720,962 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
The sentinel node biopsy
No full textSentinel node biopsy is an effective procedure in breast cancer stadiation. This technique consists in injection of a radioactive agent and a dying substance in the peritumoral zone. The radioactive agent ad the dyer will drain to the first nodes of the regional lymphatic basin, called sentinel node. After its detection with the use of a gamma probe nodes are harvested and histologically examined. The aim of this technique is to evaluate the extension of the disease and to avoid the patient, in the case of negative sentinel node biopsy, axillary nodes dissection, with its complications. © 2007 by new Magazine edizioni s.r.l
Quadrantectomy
No full textBreast cancer conservative surgery consists in tumour surgical excision, as the first fundamental step, completed by adjuvant or intraoperative radiotherapy, sentinel node biopsy and chemotherapy or hormonal therapy. Quadrantectomy, as stated by Veronesi, contemplates the excision of the entire quadrant of the breast mound, starting from a skin island centered on the cutaneous tumour projection, continuing with subcutaneous and adipose tissue resection, arriving to the glandular portion including muscular fascia. The resection must guarantee free margins of at least 2 cm. The conservative therapy, for neoplasies at an initial stage, allows to obtain a long term survival rate comparable to patients undergone to radical mastectomy, with less morbidity and acceptable aestethic results. Copyright © 2007 by new Magazine edizioni s.r.l
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
Surgery in hepatic and extrahepatic colorectal metastases
No full textExtrahepatic disease (EHD) has been considered a contraindication to hepatectomy. Over the last few years, some series reported interesting 5-year survival rates after resection with hepatic colorectal metastases and EHD free margins. Between August 1989 and October 2005, 116 patients underwent liver resection for colorectal metastases at Surgical Department of the University of Udine, Italy. Among these, we reviewed the data of 5 patients affected by EHD. In 3 patients there were also an anastomotic recurrence of the primary tumor, in 3 patients diaphragm was infiltrated by contiguous liver metastases. We performed in all the patients minor liver resections. We have associated the radiofrequence ablation of a lesion not surgically resectable with liver resection in one case. The surgical procedure was always considered as curative. We observed no case of operative mortality. The mean survival of the entire cohort is 23.2 months (range 4-42 months). Our study, even if based upon a limited number of patients, supports the thesis that extrahepatic disease in patients affected by colorectal cancer with hepatic metastases should not be considered as an absolute contraindication to liver resection especially for the cases in with local radical cure exeresis is achievable
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
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