1,721,216 research outputs found
Avaliación europea do estado da biodiversidade do solo ante os cambios actuais no uso do solo
No full textPresently, no country has legislation that specifically protects soil biodiversity, which may be an issue considering that global food security is highly dependent on soil organisms. Protecting soils remain an important objective for the European Union (EU), but this goal cannot be achieved without considering soil biodiversity fully. The ultimate aim of this PhD will be to provide policy tools aiming at developing actions to protect soil biodiversity at the European level. So far, soil biodiversity has been neglected in environmental assessments despite its crucial role in offering several contributions to people. Therefore, conservation measures are urgently needed.En la actualidad, ningún país cuenta con una legislación que proteja específicamente la biodiversidad del suelo, lo cual puede representar un serio problema si se tiene en cuenta que la seguridad alimentaria mundial depende en gran medida de los organismos del suelo. La protección de los suelos sigue siendo un objetivo importante para la Unión Europea (UE), pero este objetivo no se puede lograr sin considerar también la biodiversidad del suelo. El objetivo último de esta tesis será proporcionar herramientas de decisión política destinadas a implementar acciones que protejan la biodiversidad del suelo a nivel europeo. Hasta ahora, la biodiversidad del suelo ha sido ignorada en las evaluaciones ambientales a pesar de su papel crucial en la provisión de servicios ecosistémicos. Por lo tanto, se necesitan con urgencia medidas de conservación.Actualmente, ningún país ten lexislación que protexa especificamente a biodiversidade do solo, o que pode representar un grave problema tendo en conta que a seguridade alimentaria mundial depende moito dos organismos do solo. A protección do solo segue sendo un obxectivo importante para a Unión Europea (UE), pero este obxectivo non se pode alcanzar sen considerar tamén a biodiversidade do solo. O obxectivo final desta tese será proporcionar ferramentas de decisión política destinadas a implementar accións que protexan a biodiversidade do solo a nivel europeo. Ata agora ignorábase a biodiversidade do solo nas avaliacións ambientais a pesar do seu papel crucial na prestación de servizos ecosistémicos. Polo tanto, son urxentes medidas de conservación
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
Call for joint international actions to improve scientific understanding and address soil erosion and riverine sediment issues in mountainous regions
No full text
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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