1,720,957 research outputs found
Modelli di determinazione del carico e di impatto animale in sistemi pascolativi e silvani
No full textGrazing damage assessment as sustainability indicator in Mediterranean forests
No full textDuring the last decades, and particularly since the United Nations Conference on Environment and Development held in Rio de Janeiro in 1992, the European Forestry sector has undergone deep changes: new functions and productive and social roles have increased the importance of the forest resources. In this context, particular emphasis is laid on sustainable forest management, which is aimed at safeguarding the environment and respecting social needs and economic efficiency. The new requirements linked to sustainable forest management have been taken into account by the northern European Countries after the Interministerial Conferences for the Protection of the European Forests held in Helsinki and Lisbon: evaluation schemes of the management criteria have been established based on indicators (DPSIR). This is not the case for the forested areas in Mediterranean Europe where the livelihood of several populations still depends on pastoral activities, with differences between the eastern and the western parts of the area. Even in Italy and France, countries where the agropastoral sector is in deep crisis both in terms of income and number of people employed, the old problem of the conflict between pastoralism and forest resources is still a live topic. Recent economic incentives have even favoured the spread of high impact activities. The importance attributed to the conservation of forest resources, which can also be seen in international treaties (United Nations Conventions on Biodiversity, Global Change and Desertification), makes the definition of sustainable management criteria for the silvopastoral systems typical of Mediterranean Europe an urgent and topical priority. In this context, ad hoc indicators and models able to describe complex aspects, such as the impact, carrying capacity, resilience, and the irreversibility threshold related to the intensity or type of pastoral use, among others. All such factors are strongly influenced by spatial and temporal factors and related to the particular climate and the evolution of the forest stands.
This paper present a semi-empirical procedure (IMPAFORMED) to assess the sustainable use of a forest with domestic animals, using socio-economic constraints, goals, stocking rates and the grazing damage as operative tools
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
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
- …
