1,721,010 research outputs found
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
Integrated analysis of dynamic PET and MR brain images for the development of imaging biomarkers of drug delivery
Get PDFDispelling 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
The Development of the Oceanic Mixed Layers and the Processes Governing the Evolution of their Properties in the Red Sea
No full textThe importance of understanding the Red Sea (RS) circulation and its response to external forcing variability has become increasingly recognized in recent years. The RS circulation presents a complex behavior and is driven by both strong air-sea buoyancy fluxes and winds. The air-sea exchanges are mediated by the oceanic Mixed Layers (MLs), which constitute the active part of the ocean that interacts with the atmosphere and plays a critical role in the general circulation.
The goal of this thesis is to build a deeper understanding of the processes that drive the evolution of the upper layer properties of the Red Sea, focusing on the development of the ML and its spatiotemporal variability. On account of the sparsity of observations, this is primarily achieved using state-of-the-art high resolution regional oceanic simulations, which are extensively validated against the available observations. We first analyze the model results to examine the relative contribution of the different components of the atmospheric forcing (buoyancy fluxes and momentum forcing) to the variability of the upper layer properties and the ML depth (MLD) distribution. Using closed and complete tracer (potential temperature and salinity) budgets, integrated over the MLD, we further investigate the role of internal oceanic processes in the evolution of the RS MLs. Our analysis separately considers the advective fluxes, diapycnal mixing, and entrainment of heat and salt that ultimately define the tracer concentration inside the ML. We further identify anomalous years in terms of their annual MLD and investigate the dependence of the ML development on the interannual accumulation of heat and salt in the water column. In light of recent reports of warming trends in the RS that raise concerns about the response of the RS under an increasingly warming climate, we extend our analysis on longer timescales than the model simulation period, using sea surface temperature (SST) as a proxy of the long-term RS upper layers’ variability. Increased understanding of the processes governing the evolution of the RS will not only serve to improve our knowledge on the basin’s dynamical functioning but also lead to greater understanding of the physical-biological interactions in the RS
Phantom data from the Siemens mMR scanner
No full textRaw data and reconstructed images of the NEMA Image Quality phantom and of a germanium-68 point from the Siemens mMR scanner. A data description document is also included for each dataset
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
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