1,720,954 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
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
Characterizing the Three-Dimensional Ocean Circulation within the Galápagos Archipelago
Get PDFThe Galápagos Islands straddle the equator in the eastern Pacific approximately 1000 kilometers west of the South American conƟnent. Deservingly protected in the world’s second largest marine reserve and holding the disƟncƟon of a UNESCO World Heritage Site, the Islands are iconic for their unique and remarkable biodiversity. Situated at the confluence of several tectonic plates, the Islands’ dynamic geological landscape is also unique in the Earth’s oceans. Connecting these two distinctive characteristics are the coastal and subsurface waters of the eastern equatorial Pacific Ocean. The Galápagos sits amidst and briefly interrupts ocean currents that are widely accepted as integral components of the global climate system including its variability such as the El Niño-Southern Oscillation (ENSO). The Archipelago’s location and distinctive bathymetry result in complex hydrodynamics, the full extent and implications of which are yet unknown.
Although the currents of the equatorial Pacific in the open ocean surrounding the Archipelago are generally understood, the nature of their interaction with the Galápagos Islands and the resulting local circulation within the archipelago are not. This study utilizes a high-resolution configuration of the Community Earth System Model (CESM), a fully coupled, global climate model, to investigate characteristics of flow within the Archipelago. A present-day simulation of this model is used to depict surface and subsurface flow under normal and ENSO conditions.
Results show that surface flows in the Galápagos Archipelago are mainly driven by the westward South Equatorial Current. In the subsurface, the Equatorial Undercurrent (EUC) splits at the archipelago's western edge, wrapping around and flowing into the archipelago. During winter and spring, the southern arm of the bifurcated EUC directs archipelago-interior flow, while in summer and fall, the northern EUC dominates. Large eddies circulate within the archipelago, seasonally varying in speed and location. During La Niña events, velociƟes generally increase and enhance circulation. In El Niño conditions, they decrease, reducing nutrient supply to marine ecosystems. In particular, El Niño summers pose risks to the sensitive Galápagos ecologies due to altered conditions. Additional investigation is needed to fully understand how complex hydrodynamics within the Archipelago influences marine life, yet this study adds to scientific knowledge of local circulation via a characterization of flow within the Galápagos Archipelago. </p
Characterizing the Three-Dimensional Ocean Circulation within the Galápagos Archipelago
Get PDFThe Galápagos Islands straddle the equator in the eastern Pacific approximately 1000 kilometers west of the South American conƟnent. Deservingly protected in the world’s second largest marine reserve and holding the disƟncƟon of a UNESCO World Heritage Site, the Islands are iconic for their unique and remarkable biodiversity. Situated at the confluence of several tectonic plates, the Islands’ dynamic geological landscape is also unique in the Earth’s oceans. Connecting these two distinctive characteristics are the coastal and subsurface waters of the eastern equatorial Pacific Ocean. The Galápagos sits amidst and briefly interrupts ocean currents that are widely accepted as integral components of the global climate system including its variability such as the El Niño-Southern Oscillation (ENSO). The Archipelago’s location and distinctive bathymetry result in complex hydrodynamics, the full extent and implications of which are yet unknown.
Although the currents of the equatorial Pacific in the open ocean surrounding the Archipelago are generally understood, the nature of their interaction with the Galápagos Islands and the resulting local circulation within the archipelago are not. This study utilizes a high-resolution configuration of the Community Earth System Model (CESM), a fully coupled, global climate model, to investigate characteristics of flow within the Archipelago. A present-day simulation of this model is used to depict surface and subsurface flow under normal and ENSO conditions.
Results show that surface flows in the Galápagos Archipelago are mainly driven by the westward South Equatorial Current. In the subsurface, the Equatorial Undercurrent (EUC) splits at the archipelago's western edge, wrapping around and flowing into the archipelago. During winter and spring, the southern arm of the bifurcated EUC directs archipelago-interior flow, while in summer and fall, the northern EUC dominates. Large eddies circulate within the archipelago, seasonally varying in speed and location. During La Niña events, velociƟes generally increase and enhance circulation. In El Niño conditions, they decrease, reducing nutrient supply to marine ecosystems. In particular, El Niño summers pose risks to the sensitive Galápagos ecologies due to altered conditions. Additional investigation is needed to fully understand how complex hydrodynamics within the Archipelago influences marine life, yet this study adds to scientific knowledge of local circulation via a characterization of flow within the Galápagos Archipelago. </p
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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