1,720,972 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
Resumption of physical activity and sport after knee replacement
No full textPurpose: to assess the resumption of physical activity after knee replacement. Methods: retrospective study. Results: 118 patients were included in the final analysis. A resumption of >93% of the activities performed before surgery was observed. Logistic regression analysis did not show any significant associations between postoperatory activity and epidemiological and clinical variables except the function perceived by the patient. Conclusions: the resumption of physical activity and sport is a paramount expectation for active patients. A clearer definition of physical activity and sports realistically achievable after a knee prosthesis is necessary but not yet fully available
Tibioplasty, a new technique in the management of tibial plateau fracture: A multicentric experience review
No full textIntroduction The traditional methods in displaced tibial plateau fractures use metallic instrumentation. âBalloon-tibioplastyâ is a novel minimally invasive technique. Purpose Use of the balloon-tibioplasty show an improvement of the reduction compared to traditional methods. Patients and methods We enrolled 28 patients who presented with a depression fracture of external tibial plateau divided into two treatment groups: balloon-tibioplasty (group I) and âtraditionalâ reduction technique (group II). Results Balloon-tibioplasty is a minimally invasive treatment for tibial plateau fracture. Discussion Balloon-tibioplasty appears to have several advantages over traditional reduction techniques. Conclusion Balloon-tibioplasty represents an improved and accurate modality for restoration of articular congruence
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
Osteochondral avulsion fracture of the posteromedial tibial plateau
No full textPosteromedial tibial plateau avulsion fracture caused by semimembranosus muscle is not easy to detect by X-ray. The literature regarding this issue is poor, also mechanism is extensively disputable. This lesion was often connected to an anterior cruciate ligament (ACL) rupture and medial meniscal horn lesion. In this work, we described a posteromedial tibial plateau avulsion fracture at the semimembranosus insertion. In particular, we referred to the surgical treatment of those transversal osteochondral fractures
Efficacy of early low-molecular-weight heparin prophylaxis in elderly patients after degenerative spinal surgery: A brief retrospective review
No full textMany orthopaedic surgical procedures are potentially affected by deep vein thrombosis (DVT) and Pulmonary Embolism (PE). DVT and PE are a clinical expression of the same pathological process called venous thromboembolism (VTE). Low-molecular-weight heparin (LMWH) is approved/ recognized to be a pharmacological solution to prevent VTE. The objective of the current study is twofold: (i) to assess the effect of a therapeutic protocol with LWMH started 24 hours after surgery on systemic bleeding and ii) to assess its effect on thrombosis and pulmonary embolism risk in patients undergoing early prophylaxis after spine surgery. A consecutive cohort of 110 patients undergoing spinal surgery was tested. Fifty six cases were spinal stenosis and 54 were degenerative thoracolumbar kypho-scoliosis. None of the patients withdrew from the study. 2 patients manifested PE signs and a prophylactic protocol therapy with LMWH which was started 24 hours after spine surgery resulted in a very low haemorrhage risk and low rate of PE and DVT
Three-dimensional printed models can reduce costs and surgical time for complex proximal humeral fractures: preoperative planning, patient satisfaction, and improved resident skills
Full text linkBackgroundProximal humeral fractures (PHFs) are still controversial with regards to treatment and are difficult to classify. The study's objective is to show that preoperative planning performed while handling a three-dimensional (3D) printed anatomical model of the fracture can ensure a better understanding of trauma for both surgeons and patients.Materials and methodsTwenty patients (group A, cases) with complex PHF were evaluated preoperatively by reproducing life-size, full-touch 3D anatomical models. Intraoperative blood loss, radiographic controls, duration of surgery, and clinical outcomes of patients in group A were compared with 20 patients (group B, controls) who underwent standard preoperative evaluation. Additionally, senior surgeons and residents, as well as group A patients, answered a questionnaire to evaluate innovative preoperative planning and patient compliance. Cost analysis was evaluated.ResultsIntraoperative radiography controls and length of operation were significantly shorter in group A. There were no differences in clinical outcomes or blood loss. Patients claim a better understanding of the trauma suffered and the proposed treatment. Surgeons assert that the planning of the definitive operation with 3D models has had a good impact. The development of this tool has been well received by the residents. The surgery was reduced in length by 15%, resulting in savings of about EUR 400 for each intervention.ConclusionsFewer intraoperative radiography checks, shorter surgeries, and better patient compliance reduce radiation exposure for patients and healthcare staff, enhance surgical outcomes while reducing expenses, and lower the risk of medicolegal claims.Level of evidenceLevel I, prospective randomized case-control study
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