1,720,960 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
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
Oncologic reliability of nipple-sparing mastectomy for selected patients with breast cancer.
No full textBackground: Nipple sparing mastectomy (NSM) is the current surgical alternative to conventional techniques, when mastectomy is required. This less invasive procedure safeguards the integrity of the nipple areola complex (NAC), whose removal is recognized as a factor that exacerbates the patient's feeling of mutilation, however ensuring oncological radicality for women with breast cancer. Patients and Methods: From January 2003 to January 2011, 77 patients underwent Nipple Sparing Mastectomy (NSM). Patients were carefully selected according to specific criteria. When requested, postoperative radiotherapy on the residual glandular tissue was performed within 6 months of surgery. Patients were on close clinical and instrumental follow-up every 4 months for 2 years and every 6 months for the remaining 3 years. Results: Of the 77 patients who underwent NSM, 10 suffering from bilateral cancer were subjected to bilateral procedure, for a total of 87 performed procedures. Furthermore, in the same group, 13 NSMs were carried out for preventive purposes. The average diameter of resected tumors was 13.5 mm, with a range of 2 to 25 mm. During the follow-up (range 23-115 months, mean 50.33 months) 2 locoregional recurrences in the NAC were observed, identified through instrumental check, and surgically treated by NAG removal after 33 and 37 months respectively. Conclusion: According to the litterature data and confirmed by our experience, we consider NSM as an oncologically safe technique that, in the respect of inclusion criteria may be performed in any patient with indication to mastectomy. A careful selection of patients by a multidisciplinary team according to strict criteria is the key in determining feasibility as well as oncological safety and should lead the general acceptance and widespread use of such surgical technique
A rare nosological entity: the perforated solitary cecal diverticulum. Research article.
No full textTo describe three cases of solitary cecal diverticulum, and trying to evaluate the better method of diagnosis and treatment with analysis of the literature.
MATERIAL OF STUDY:
Description of three cases of solitary cecal diverticulum's perforation admitted in the Department of General and Oncologic Surgery, Santa Maria della Misericordia Hospital, Perugia, during the period January 2011 - January 2012.
RESULTS:
In all patients the clinical presentation was very similar to that of acute appendicitis. Preoperative diagnosis was achieved in one case through abdominal CT scan, other two cases were identified at final pathology. At one year from the treatment all patient are still alive.
DISCUSSION:
Cecal diverticulum is a rare condition, often diagnosed either casually or because of inflammatory or perforative complications. The highest incidence is found in Western population. Because of the clinical presentation, very similar to the appendicitis, and the inflammatory reaction involving the colon and its surrounding tissues, the pre- and intra-operative diagnosis are very difficult. The diagnosis is almost always histological. The treatment may vary from simple expectant medical management, carried out with bowel rest, parenteral support and antibiotics as for left-sided diverticulitis, to surgical approach, performed through simple diverticulectomy or by classical right hemicolectomy.
CONCLUSION:
Pre-surgical and, also intra-operative, diagnosis of perforated solitary cecal diverticulum is clearly difficult. CT scan represents the gold standard for the differential diagnosis. Right hemicolectomy is an effective and safe approach, allowing accurate control, preventing complications and recurrences, and it represents the optimal management of the disease
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
Therapeutic options for body packers: surgical or conservative treatment? A single center experience and review of literature
No full textUNLABELLED: Body packing is a way to deliver packages of drugs hidden in body cavities. In Europe, as noted the latest report coming from the Brussels observatory, there are 74 million drugs consumers. Italy is in pole position and Perugia was considered as a "capital city" in the drug market. Body packers usually swallow the drug packets, although their insertion into the rectum and vagina has also been reported. The management depends on whether or not the patient becomes symptomatic. Surgery is indicated in presence of repeated bouts of drug toxicity not controlled by medical treatment, radiological evidence of packet retention in the stomach, intestinal obstruction or perforation. It is also important to emphasize that, in a multidisciplinary context, the patient's management before reaching the operating theater if symptomatic, is aimed to stabilization and is usually demanded to Intensive Care Unit (ICU) physicians. We present our center recent experience with body packers, managed both with surgical and conservative treatments.KEY WORDS: Body packers, Drugs, Emergency surgery, Foreign bodies
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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