1,720,956 research outputs found
Treatment of acquired patella baja by proximalization tibial tubercle osteotomy significantly improved knee joint function but overall patient-reported outcome measures remain diminished after two to four years of follow-up
No full text
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
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
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
Risikofaktoren bei autologer Brustrekonstruktion
Get PDFHintergrund und Ziele:
Neben der vitalen Bedrohung und den Nebenwirkungen der Chemotherapie, stellt die Brustentfernung für Patientinnen mit Mammakarzinom einen der wichtigsten Faktoren für eine verminderte Lebensqualität dar. Die moderne Plastsiche Chirurgie bietet eine Vielfalt von rekonstruktiven Alternativen, zur Wiederherstellung der weiblichen Körperform und somit zur Verbesserung des Selbstbildes, sowie zur definitiven ganzheitlichen Genesung. Durch die mikrochirurgische autologe Brustrekonstruktion kann das Optimum an funktionellem und ästhetischem Ergebniss erzielt werden. Allerdings handelt es sich hierbei auch um die Aufwendigste der rekonstruktiven Optionen, mit einer hohen initialen Belastung für die Patientin und sehr hohen fachlichen Anforderungen an den Plastsichen Chirurgen. Die Entwicklung von rekonstruktiven Algorithmen unter genauer präoperativer Evaluation ist für das Endergebnis essenziell.
Die Eruierung von möglichen Risikofaktoren bei autologer Brustrekonstruktion stellt das Ziel dieser Arbeit dar. Im Hinblick auf eine Ergebnisoptimierung kann auf Basis dieser Merkmale ein individuelles, an die Bedürfnisse der Patientin angepasstes, Therapiekonzept erstellt werden.
Methoden (Patienten, Material und Untersuchungsmethoden):
Zu diesem Zweck wurden alle von der Plastischen und Handchirurgischen Klinik durchgeführten mikrochirurgischen Gewebetransplantationen zwischen 2005 – 2009 erfasst. Für die Analyse der Daten wurde eine interrelationelle dynamische Datenbank programmiert. In diese Datenbank wurden Informationen aus den Patientenakten und der OP Dokumentation eingespeist. Mit Hilfe der Software SPSS 21.0 (SPSS Inc., Chicago, USA) wurde die statistische Auswertung durchgeführt. Hierbei kammen zur Signifikanzanalyse bei normalverteilter Datenlage der ANOVA Test mit der Tukey Korrektur für mehrfache Vergleiche bzw. der Mann-Whitney-Test für zwei unabhängige Stichproben zur Anwendung. Das Signifikanzniveau wurde auf p=0,05 definiert.
Ergebnisse und Beobachtungen:
Die Ergebnisse der Studie zeigen eine Steigerung der Komplikationsrate bei autologen Brustrekonstruktionen durch hohes Alter (Spät-Komplikationen), Nikotinabusus, erhöhten BMI (Body-Mass-Index), sowie vorangegangene Radiatio und Chemotherapie.
Darüberhinaus wurde eine Risikoerhöhung für die Enstehung einer postoperativen Hernie in der Lappenkategorie TRAM beobachtet.
Eine Tendenz zu höheren Komplikationsraten ist bei Patientinnen mit einem ASA- Score >1 feststellbar. Die statistische Testung der Parameter Diabetes mellitus Typ II, Nierenfunktionsstörungen, Arteriosklerose, Blutgerinnungsstörungen, sowie
Immunsuppression liefert keine Anhaltspunkte die auf einen signifikanten Unterschied bezüglich des Lappenüberlebens rückschliessen lassen.
Praktische Schlussfolgerung:
Die Entwicklung der mikrochirurgisch autologen Brustrekonstruktion hat zur Optimierung der funktionellen und ästhetischen Ergebnisse geführt. Dennoch sollte nicht außer Acht gelassen werden, dass es sich hierbei um hoch komplexe therapeutische Algorithmen handelt, die einen hohen Grad an chirurgischer Expertise und klinischer Routine erfordern. Die notwendige organisatorische und prozessuale Infrastruktur für eine sichere Durchführung eines solch komplexen Eingriffes bei Risikopatientinnen und die gleichzeitige Beherrschung von Komplikationen ist nur in einem mikrochirurgisch rekonstruktiven Zentrum realisierbar
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
Return to Sports and Patients’ Rehabilitation Continuum After Deepening Trochleoplasty and Concomitant Patellar-Stabilizing Procedures: A Case Series of 111 Patients at 2 to 4 Years of Follow-up
No full textBackground: There are few reports on the return to sports after complex patellar-stabilizing surgery. Purposes: To evaluate patients’ ability to return to sports and to investigate the extent to which the preoperative level of sports participation influences sports activity after deepening trochleoplasty (TP) and concomitant patellar-stabilizing procedures. Study Design: Case series; Level of evidence, 4. Methods: Between April 2015 and April 2019, 144 patellar-stabilizing procedures, including deepening TP and medial patellofemoral ligament reconstruction or medial reefing with and without concomitant realignment procedures, were carried out in 142 patients. The Banff Patellofemoral Instability Instrument 2.0 (BPII 2.0) and the Tegner activity score were used to assess patients’ quality of life and sports activity level. In addition, a numerical analog scale was used to evaluate patellofemoral pain intensity during rest and activity and subjective knee joint function. Results: Outcomes were available for 111 patients (112 knees) (male/female, 77/34; mean age, 23.4 ± 7.8 years), yielding a 77.7% follow-up rate at a mean of 39.2 ± 9.9 months (range, 24-48 months). Two-thirds of the patients returned to their preoperative level of activity or higher, but their Tegner scores did not change significantly (4.5 ± 2.4 vs 4.7 ± 1.6; P = .365). Low-level athletes (preoperative Tegner score 0-4) participated at a higher level of sports activity (2.7 ± 1.4 to 4.1 ± 1.2; P < .0001), whereas higher-level athletes (preoperative Tegner score 5-10) participated at a lower level (6.8 ± 1.3 to 5.5 ± 1.7; P < .0001). The likelihood of returning to the preoperative activity level (Tegner score) was significantly higher in the low-level activity group than in the high-level activity group (P = .0001; 95% CI, 4.055-27.05; odds ratio, 10.47). All of the patient-reported outcome measures improved postoperatively, independent of the patients’ age, sex, and body mass index. Conclusion: Patients undergoing deepening TP and medial soft tissue stabilization with or without concomitant realignment surgery for complex patellar instability can expect good clinical results and a high rate of return to sports participation, with two-thirds of patients returning to their preoperative Tegner-level of activity or higher. However, higher-level athletes should be informed that their likelihood of returning to sports at the preoperative level or full participation at a competitive level is reduced
- …
