1,721,110 research outputs found
Arthur O. Roberts & Sam Williams, Shungnak, AK, June 1975
No full textArthur O. Roberts & Sam Williams, Shungnak, AK, June 1975.https://digitalcommons.georgefox.edu/perisho_alaska/1046/thumbnail.jp
Behavioural ecology and conservation of the Anosy mouse lemur (Microcebus tanost) in the littoral forests of southeastern Madagascar
Full text linkMouse lemurs are widely regarded as an ideal model taxa to study behavioural ecology, sociality and evolution in primates, however relatively few recognised forms have been studied to date. The principal aim of this work is to investigate the behavioural and ecological character of the Anosy mouse lemur (Microcebus tanosi) and to relate these new insights to species conservation in the littoral forests of Sainte Luce. The littoral forests of southeast Madagascar represent a distinct phytogeographic habitat, characterised by tremendous species richness and floristic diversity, however, they have been severely impacted by human activities over the past century. At the outset, very little ecological data was available for M. tanosi. Across five data chapters I investigate the species' broad morphological flexibility, its ranging behaviour and social system, sleeping and nesting behaviours and its long-term demographic descriptives. I go on to contextualise the wider conservation challenges facing littoral biodiversity in Sainte Luce. This study finds no evidence for sexual dimorphism but detects subtle morphological differences between isolated con-specific populations. Microcebus tanosi home ranges overlap substantially both inter and intra-sexually and are consistent with a dispersed social neighbourhood and promiscuous mating system, with males ranging over significantly larger areas than females. No evidence was found for the spatial monopolisation of receptive females by dominant males. Although M. tanosi is an apparent habitat generalist, utilising a wide variety of sleeping sites and tree species in the littoral forests, population density is low. Results indicate that predator avoidance best explains the patterns governing sleep site selection and highlights the key role of Pandanacae species. This study demonstrates the importance of long-term population monitoring for nocturnal lemurs and highlights the critical relevance of local phenomena and forest management strategy for species conservation. Finally, this work provides several recommendations to counteract the observed decline in biodiversity in Sainte Luce
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
The Stability of Transient Relationships
Full text linkIn contrast to long-term relationships, far less is known about the temporal
evolution of transient relationships, although these constitute a substantial
fraction of people's communication networks. Previous literature suggests that
ratings of relationship emotional intensity decay gradually until the
relationship ends. Using mobile phone data from three countries (US, UK, and
Italy), we demonstrate that the volume of communication between ego and its
transient alters does not display such a systematic decay, instead showing a
lack of any dominant trends. This means that the communication volume of egos
to groups of similar transient alters is stable. We show that alters with
longer lifetimes in ego's network receive more calls, with the lifetime of the
relationship being predictable from call volume within the first few weeks of
first contact. This is observed across all three countries, which include
samples of egos at different life stages. The relation between early call
volume and lifetime is consistent with the suggestion that individuals
initially engage with a new alter so as to evaluate their potential as a tie in
terms of homophily.Comment: Published in Scientific Reports 13, 6120 (2023
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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe 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
Full text linkWe 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
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