1,721,036 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
Laparoscopic resection for rectal cancer: A review
No full textDespite increasing evidence on the success of laparoscopic resection in colorectal diseases, clinicians remain skeptical about the application of laparoscopic resection in rectal cancer, although it may benefit patients by resulting in early return of bowel function, reduced postoperative pain, and shorter hospital stay. Rectal cancer surgery has been regarded as a technically demanding procedure. Deviation from the oncologic principle of mesrectal dissection will lead to a higher local recurrence rate. Therefore, rectal cancer was not included in earlier studies on laparoscopic versus open resection for colorectal cancer. However, many colorectal surgeons who practice laparoscopic surgery soon appreciated that the improved optics of laparoscopy can provide a much better view of the pelvis, and the Heald principle of meticulous sharp dissection for total mesorectal excision could be performed without compromise. In recent years, there has been increasing number of reports on laparoscopic resection of rectal cancers. Apart from the issues on postoperative outcomes and long-term results, laparoscopic resection has generated interest in its impact on the preservation of sexual and bladder function. We summarize the current evidence on laparoscopic resection for rectal cancer. © 2009 Society of Surgical Oncology.link_to_subscribed_fulltex
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
Current Evidence for Single-Incision Laparoscopic Colectomy
No full textSingle-incision laparoscopic colectomy (SILC) is a new operative approach for laparoscopic colorectal surgery. All instruments are inserted through a special multichannel single port device which is inserted through a small incision at abdominal wall. SILC gives very good cosmetic results and is potentially associated with reduced operative trauma and earlier recovery. However, SILC increase operative difficulty and its practice should be carefully evaluated by well conducted clinical studies. This chapter reviewed current evidence for this new and controversial operation
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
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