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Modelli e metodologie o anche clinica nella Laurea Specialistica in scienze infermieristiche?
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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
Comparison Open and Endovascular Popliteal AneurysmRepairs in a Single Center Experience
Full text linkBackground: The treatment of the popliteal artery aneurysm is feasible with conventional and endovascular methods. However, there is no unanimous agreement on the best choice both in asymptomatic and symptomatic cases. The purpose of this retrospectively study was to compare perioperative and mid-term results of open and endovascular repair on both symptomatic and asymptomatic patients, in our clinical experience. Method: Altogether 49 surgical interventions were retrospectly reviewed, OPEN treatment was used in 20 cases and in 29 cases endovascular treatment. The procedures were made from August 2011 to May 2018. Result: Primary patency at the medium follow up 28 months was 80% in the OPEN group and 83% in the ENDO group (P=0.8, log-rank: 0.7, 95% CI: 0.2-0.3). The secondary patency was 90% (18/20 pts) in the OPEN group and 93% (27/29 pts) in the ENDO group (P=0.7, log-rank: 0.5, 95% CI: 0.1-0.2). Freedom from amputation was 100% in the OPEN group and 93% in the ENDO group (P=0.2, log-rank: 0.2, 95% CI: 0.2-0.3). Survival was 80% in the OPEN group and 86% in the ENDO group (P=0.6, log-rank: 0.6, 95% CI: 0.2-0.3). Conclusion: Endovascular treatment represents a safe alternative to OPEN surgery, for treating the aneurysms of the popliteal artery. In addition, the advancement of technology, that has improved the available stent characteristics, and the correct selection of patients, have allowed to improve outcomes, making it comparable to OPEN surgery; in our series symptomatic patients too
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
Oncovascular Surgery-The Multidisciplinary Approach: Surgical Resection of the Musculoskeletal Tumor and Associated Revascularization
Full text linkAbstract
Introduction
The possibility of preserving the limb during the definitive removal operation in the case of sarcoma is a goal pursued in a multidisciplinary perspective. The aim of the study is to report our experience gained in collaboration with the IFO oncology orthopedic division and with the operating units of Orthopedics A and B of the Tor Vergata Policlinico, reporting the results and complications of the procedures performed.
Methods
From 2011 to 2014, 30 patients treated had primitive and secondary musculoskeletal neoplasm with a mean age of 44 years (14-67 years) in 26 cases (86.6%) were required revascularization. Women accounted for 53.84% (14/26), 46.16% were men (12/26). The preoperative study included a biopsy of the lesion and ultrasonography and angio-CT with multiplanar reconstructions for the evaluation of the vascular anatomy and neoplasia extension. Results The average postoperative follow-up was 19.4 months. The reconstruction of the vessels has been implemented in 12/26 (46%) mainly using the autologous saphenous contralateral vein. The use of the prosthesis was performed in the others cases (with PTFE and Dacron K prosthesis). In 4 cases the patients had lower limb edema, with a distance venous patency of 80% and arterial patency of 100%. We had no mortality at 30 days. Two patients underwent VAC therapy. No amputations had at 30 days. In 14 patients were perform chemotherapy or radiotherapy before and after surgery.
Conclusions A long-term evaluation is needed to determine the implications at distance. In case of involvement of arterial and venous vessels, vascular surgery skills allow radical resection and function preservation. The mortality gap depends by the prognosis of neoplasm
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