1,720,983 research outputs found
From individual observations to population inference: decomposing and explaining variability in elk spatial behavior
No full textTrade-offs between predation risk and food quality re-distribute elk across a road network: not all roads are equal
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Conservation of grizzly bears using access management
No full textGrizzly bears avoid roads in some areas but select areas near roads in others. This is driven
by mechanisms such as traffic patterns and food resources near roads. Understanding what
mechanisms drive the relationship between grizzly bears and roads is of particular
importance in Alberta where the majority of grizzly bear mortalities occur within 500 m of a
road. We modelled a suite of potential mechanisms underlying grizzly bear selection or
avoidance of roads and tested which of these best predicted grizzly bear habitat use and
movement around roads. A combination of food, traffic, and large-scale landscape variables
best predicted grizzly bear distribution. We used these results to simulate the impacts of road
access changes as a result of road construction, reclamation, or gating. Our findings highlight
the importance of examining the mechanisms driving habitat use and movement of large
mammals in human altered landscapes. Access management, the closing of roads during
certain times of the year, soon will be implemented in Alberta to conserve grizzly bear
populations. Understanding the mechanisms behind grizzly bear use of roaded areas will be
essential in choosing which roads to close and when to close them
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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