1,720,973 research outputs found
All wired up
No full textThe ocean floor is being covered with remote-controlled observatories, letting oceanographers keep tabs on the sea without getting wet. Jon Copley investigates. <br/
Ecology goes underground
No full textThe functioning of terrestrial ecosystems seems to depend heavily on soil biodiversity. But what controls this diversity, and how will it fare in the global greenhouse? Jon Copley digs for some answers
The story of O
No full textGeochemists are having a hard time working out why the atmosphere of the early Earth appears to have lacked oxygen for so long. Jon Copley considers the competing theories
All at sea
No full textThe oceans are full of microorganisms, which are thought to cycle nutrients and mediate climate on a global scale. Despite these environmental consequences, marine microbial biodiversity remains poorly understood. Jon Copley reports
The great ice mystery
No full textChanges in the extent and thickness of sea ice could alter ocean circulation and so disrupt the climate. Jon Copley considers one of the big unknowns in the global warming debate
Into the deep
No full textWe are on the verge of a new era in deep-sea exploitation. Marine biologist Jon Copley considers the consequence
Photos showing some of the newly discovered deep-water chemosynthetic habitats found during ChEss.
No full text<p>A) The Beebe Vent, Piccard Hydrothermal Field on the Mid-Cayman Rise (4960 m depth), image taken by HyBIS during Voyage 44 of the RRS James Cook, April 2010 (© Jon Copley, University of Southampton/NOCS) (Connelly et al,. 2011); B, Turtle Pits hydrothermal vent, first vents discovered on the South MAR, 2005 (© ROV Quest, Marum, Bremen); C, Bubbylon hydrothermal vents on the North MAR discovered near the Azores in October 2010 (© ROV Quest, Marum, Bremen); D, Black smokers on the East Scotia Ridge south of the Polar Front discovered in January 2009 (©Paul Tyler and Jon Copley, ChEsSo Consortium, University of Southampton, UK, ROV Isis).</p
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
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