1,722,477 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
Perioperative fluid management: evidence-based consensus recommendations from the international multidisciplinary PeriOperative Quality Initiative
No full textFluid therapy is an integral component of perioperative management. In light of emerging evidence in this area, the Perioperative Quality Initiative (POQI) convened an international multiprofessional expert meeting to generate evidence-based consensus recommendations for fluid management in patients undergoing surgery. This article provides a summary of the recommendations for perioperative fluid management of surgical patients from the preoperative period until hospital discharge and for all types of elective and emergency surgery, apart from burn injuries and head and neck surgery. Where evidence was lacking, recommendations for future research were generated. Specific recommendations are made for fluid management in elective major noncardiac surgery, cardiopulmonary bypass, thoracic surgery, neurosurgery, minor noncardiac surgery under general anaesthesia, and critical illness. There are ongoing gaps in knowledge resulting in variation in practice and some disagreement with our consensus recommendations. Perioperative fluid management should be individualised, taking into account the type of surgery and important patient factors, including intravascular volume status and acute and chronic comorbidities. Recommendations are made for further research in perioperative fluid management to address important gaps
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
Design of a cooling device for the qualification of irradiated silicon sensors
No full textDer Large Hadron Collider (LHC) am europäischen Kernforschungszentrum in Genf ist ein grosser 2 x 7 TEV Proton - Proton Collider und hat im November 2009 den Betrieb aufgenommen. Der CMS Detektor (Compact Myon Solenoid) ist eines der vier großen Experimente am LHC. Es handelt sich um einen Mehrzweckdetektor, der voraussichtlich in der Lage sein wird, neue Physik jenseits des Standardmodells der Teilchenphysik zu entdecken. Der innerste Teil des Detektors, der so genannten Tracker dient der Verfolgung und Rekonstruktion der Bahnen der Teilchen, die in den Kollisionen entstehen. Er besteht aus über 15,000 Silizium-Detektor Modulen, welche in konzentrischen Kreisen um den Interaktionspunkt angeordnet sind. Beide Maschinen haben eine erwartete Lebensdauer von circa 10 Jahren, nach denen sie einem Upgradeprogramm unterzogen werden sollen. Dabei soll die Luminosität des Beschleunigers und somit die Teilchenrate drastisch erhöht werden, was zu einer erheblichen Vergrößerung der Strahlenbelastung im Detektor führt. Dies stellt ganz neue Anforderungen an die Strahlenhärte der verwendeten Materialien im Tracker. Diese Diplomarbeit, die am Institut für Hochenergiephysik (HEPHY) der Österreichischen Akademie der Wissenschaften durchgeführt wurde, beschäftigt sich mit dem Bau eines so genannten Cold Chuck - eines gekühlten Aluminiumtisches. Mit dessen Hilfe sollte es möglich sein die Auswirkungen ionisierender Strahlung auf Siliziumsensoren zu untersuchen und zu quantifizieren. Im Rahmen einer internationalen Kampagne des Central European Consortium (CEC) sollen verschiedene Silizium-Rohmaterialien hinsichtlich ihrer Strahlenhärte untersucht und das geeignetste Material für den neuen Tracker des CMS Experiments gefunden werden. In den ersten Kapiteln werden einige Fakten über den LHC Beschleuniger sowie das CMS Experiment präsentiert und anschließend wird etwas näher auf mikroskopische Strahlenschäden in Siliziumsensoren und deren makroskopische Auswirkungen eingegangen. Schlussendlich werden Entwicklung und Erprobung des Cold Chuck Setups vorgestellt und einige erste Messungen präsentiert.The Large Hadron Collider (LHC) is a large 2 x 7 TeV proton - proton collider located at CERN in Geneva and started operation in November 2009. The Compact Myon Solenoid (CMS) is one of the four large-scale experiments at LHC. It is a multi-purpose detector that will hopefully be able to discover new physics beyond the Standard Model of elementary Particle Physics. The innermost part of the detector, the so-called Tracker is used to track and reconstruct the trajectories of the particles that are created in the collisions.Therefore over 15,000 modules of silicon strip sensors are used in a barrel-like geometry around the interaction point. After their lifetime of approximately 10 years, both machines are going to be upgraded, which will remarkably increase the luminosity of the LHC collider. This requires new materials for the Tracker of CMS as particle rates and radiation environment will grow dramatically. This master thesis, done at the Institute of High Energy Physics (HEPHY) of the Austrian Academy of Sciences, focusses on the design and construction of a so-called Cold Chuck measurement unit done by the author. With the help of this unit it will be possible to examine and quantify the impact of ionizing radiation on silicon sensors and distinguish different bulk materials and their properties. Within an international campaign of the Central European Consortium (CEC), the ideal material for the new Silicon Tracker for the CMS Upgrade should be found. At the beginning some facts about LHC and CMS, especially the Tracker, will be presented in short, followed by a closer look at microscopic radiation damage in silicon bulk material and its macroscopic effects.Then the focus will move to the R\&D of the Cold Chuck Probe Station, its abilities and the testing carried out by the author. Finally some first measurements will be presented
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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