1,720,959 research outputs found
Osteochondromas: An Unusual Cause of Vascular Disease in Young Patients: 2 Clinical Cases
No full textOsteochondroma is the most common benign tumor of bones in young patients. It is an unusual cause of nonatherosclerotic peripheral arteriopathy. It is mostly detected in youth and, thus, diagnosis can be delayed since symptoms such as claudication can be confused with muscular cramps. In case of clinical suspicion of peripheral artery disease in the young, the presence of an exostosis should be suspected. We reported our experience of 2 young patients with limb ischemia due to ab extrinseco compression of popliteal artery. In both cases, surgical exeresis of a lower limb exostosis was performed. In the first case, bypass surgery was not required since arterial wall was not damaged. In the second case, an autologous inverted saphenous vein femoro popliteal bypass was performed
Sarcoma of the Thigh: Radical Excision with Arterial Reconstruction Using the Contralateral Saphenous Vein
No full textSoft tissue sarcomas are a heterogeneous group of malignant mesenchymal neoplasms that frequently affect large muscle of the thigh. A conservative limb-salvage surgery involving en bloc resection of the whole tumor with surrounding healthy tissue can sometimes be considered instead of amputation to achieve good local disease control while preserving a satisfying function of the
affected limb.
The massive vascular encasement, once regarded as a contraindication to limb-salvage surgery, can sometimes be
encompassed thanks to vascular axis reconstruction.
Although no doubt exists about the need for reconstruction of the femoral artery with quite good reported results, the
venous replacement is a controversial issue with unclear patency rates, yet this replacement is mandatory when
superficial and deep femoral veins are removed together with the saphenous vein. The femoral artery is commonly
replaced with an autologus reversed saphenous vein graft because of its resistance to infections and its excellent
patency rates compared with artificial grafts.
We present a case of thigh sarcoma involving the femoral vascular axis with complete clogging of the
femoral vein due to massive deep thrombosis. The video illustrates the features of the case and highlights the steps
of a wide compartment resection with arterial reconstruction by autologus reversed saphenous vein graft
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
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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