1,721,121 research outputs found
Cardiac Resynchronization Therapy by Biventricular Stimulation: Analysis and Models of Patient Management
No full textRating the rat: global patterns and research priorities in impacts and management of rodent pests
No full textA model for voles interference in cultivated orchards
No full textWe consider a dynamical system involving seven populations to model the presence of voles in a cultivated orchard. The plant population is stratified by age (three groups) and by health status (being damaged or not). The last equation models the voles with a modified logistic equation with Allee effect, where the modification takes into account the disturbance provided by the human activity on the orchard. Both an analytical investigation and numerical simulations on a case study are presented. The latter support the observed differences in the literature, in terms of number of voles, between cultivated and uncultivated fields
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
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
The management of the introduced grey squirrel seen through the eyes of the media
Full text linkCommunication plans are fundamental for the success of conservation programs, especially when dealing with alien species. In a media-saturated society the effectiveness of communication could be evaluated through the information reported by the media, as an indicator of public attitudes towards a particular issue. We evaluated the effectiveness of a communication campaign by analysing the perception of the media towards management activities to control grey squirrel populations. A media content analysis was performed to classify the news in categories regarding their attitude towards the project. A total of 166 articles were analysed, which corresponds to a mean of one article every 9 days along the 4-years project. News followed peaks of interest in specific periods, generally related with milestones of the project. Half of the negative news regarded management activities in an urban area, despite the softer management approach adopted, with surgical sterilization of animals instead of their euthanasia after live-trapping. A reinforcement of the communication focused in Liguria inverted the trend of negative news which decreased over time, indicating the effectiveness of communication activities. Public support is fundamental for the successful implementation of eradication and control plans. Considering the role of media in informing and driving public opinion, media monitoring is routinely included in the development of management projects. We suggest that a media content analysis can be used as a performance indicator to evaluate the communication effectiveness of conservation projects, helping to identify negative trends so to proactively react
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