1,720,982 research outputs found
Seuils et mouilles
No full textDépret Thomas, Gautier Emmanuelle, Hooke Janet M. Seuils et mouilles. In: Le Cher. Histoire et archéologie d’un cours d’eau. Tours : Fédération pour l'édition de la Revue archéologique du Centre de la France, 2013. p. 157. (Supplément à la Revue archéologique du centre de la France, 43
Seuils et mouilles
No full textDépret Thomas, Gautier Emmanuelle, Hooke Janet M. Seuils et mouilles. In: Le Cher. Histoire et archéologie d’un cours d’eau. Tours : Fédération pour l'édition de la Revue archéologique du Centre de la France, 2013. p. 157. (Supplément à la Revue archéologique du centre de la France, 43
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
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
The Long-term Dynamics of the Glacially-fed River Systems in Patagonia
Get PDFThe acceleration of global glacier retreat in the 21st century will likely see glacially-fed rivers decouple from their glacial sources across all latitudes, incurring substantial changes to fluvial drivers and sensitivity to change. In Patagonia, water supply to the major eastward draining river systems is heavily reliant on drainage from the Andes Mountains which have undergone extensive changes in drainage dynamics during glacial periods caused by fluctuations in the extent of the Patagonian Ice Sheet. Key Climate systems (e.g. the southern westerlies) are important drivers of precipitation to Patagonia. They have responded to past shifts in temperature and are predicted to play a crucial role in future changes to weather patterns across Patagonia and the globe. Existing research on the glacial, lacustrine, vegetation and fire history has reconstructed the paleoenvironmental conditions in Patagonia, but the response of the major eastward draining rivers is largely unknown. This study combines geomorphological mapping, sedimentological and stratigraphic analysis, and luminescence dating techniques to investigate the preservation, timescales and drivers of past fluvial behaviour of the Río Chubut catchment (~42°S, ~70°W), Argentina.
This thesis concludes that the Río Chubut catchment preserves a host of palaeofluvial features that formed on timescales as old as the last interglacial (MIS 5) and as recent as the last millennium (Late Holocene). The catchment preserves evidence of: (1) deep valley incision; (2) the aggradation and incision of glacially-derived sediments; (3) the shift from a braided to a meandering planform; and (4) the evolution of the contemporary meandering system. Under glacial conditions, the Río Chubut was braided and dominated by glaciofluvial outwash. Injections of sediment, from repeated glaciation of the headwaters, continued to be mobilised as a paraglacial braided river after decoupling from the ice sheet at the end of the last deglaciation. Whilst the sediment supplied by glaciation was vital to braiding in the Río Chubut, the water supply was not; this study shows that the last paraglacial braided planform was abandoned because of a reduction in precipitation via a weakening and southward shift in the southern westerlies, which caused a planform shift to the contemporary meandering regime. The contemporary regime has evolved to a mature meandering system, operating in a flood basin. Millennial-scale floodplain residence time preserves morphological evidence of substantial channel avulsions and meander migration. Still dependent on drainage from the Andes, the Río Chubut has persisted through the variable climatic conditions of the Holocene. This research suggests that modern paraglacial braided rivers may be vulnerable to future climate change as shown by the sensitivity of the Río Chubut to precipitation change in the Andes
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