1,720,960 research outputs found
A new Vegetation-Plot Database for the Coastal Forests of Kenya
Get PDFBiodiversity data based on standardised sampling designs are key to ecosystem conservation. Data of this sort have been lacking for the Kenyan coastal forests despite being biodiversity hotspots. Here, we introduce the Kenyan Coastal Forests Vegetation-Plot Database (GIVD ID: AF-KE-001), consisting of data from 158 plots, subdivided into 3,160 subplots, across 25 forests. All plots include data on tree identity, diameter and height. Abundance of shrubs is presented for 316 subplots. We recorded 600 taxa belonging to 80 families, 549 of which identified to species and 51 to genus level. Species richness per forest site varied between 43 and 195 species; mean diameter between 13.0 ± 9.8 and 30.7 ± 20.7 cm; and mean tree height between 5.49 ± 3.99 and 12.29 ± 10.61 m. This is the first plot-level database of plant communities across Kenyan coastal forests. It will be highly valuable for analysing biodiversity patterns and assessing future changes in this ecosystem.
Taxonomic reference: African Plant Database (African Plant Database version 3.4.0).
Abbreviations: DBH = diameter at breast height; GIVD = Global Index of Vegetation-Plot Databases; KECF-VPD = Kenyan Coastal Forests Vegetation Plot Database
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Listing The Sacred Mijikenda kaya Forests as UNESCO World Heritage Sites: “The Long Journey”
No full textKayas are a major feature of Kenya’s coastal strip. Originally residential sites, today they are regarded as sacred and play a central role in the identity of the Mijikenda, a group of linguistically-related Bantu speakers. For most of the twentieth century, local communities continued to venerate the forests, and achieved significant success in protecting them against encroachment without any State involvement. In recognition of their rich natural and cultural heritage, legal gazettement of Kaya forests as national monuments began in 1992, under the National Museums and Heritage Act. Because of the kayas’ unique nature as high biodiversity, traditionally conserved sites, the Kenya State Party decided to present them for listing as UNESCO World Heritage Sites. They were added to the candidate list in 1999, indicating Kenya’s intention to have them listed; so began the process of preparing a nomination dossier, outlining the outstanding universal value of the sites. This paper aims to present all the processes that led to the kayas’ inscription on the World Heritage List, while also providing a first-hand testimony on this “long journey”.Les forêts kayas sont une des caractéristiques majeures de la zone côtière du Kenya. Sites refuges et d’habitation jusqu’à la fin du xixesiècle, elles sont aujourd’hui considérées comme « sacrées » et jouent un rôle fondamental dans l’identité des Mijikenda, un groupe linguistiquement apparenté aux Bantous. Durant la majeure partie du XXe siècle, les groupes locaux ont su préserver la sacralité des kayas sans intervention de l’État, situation qui changea avec leur reconnaissance comme patrimoine national, en vertu de la loi sur les musées et le patrimoine national, en 1992. En raison de leur caractère unique et de leur importante biodiversité, l’État kenyan prit par la suite la décision de les présenter à l’inscription sur la liste du patrimoine mondial de l’Unesco. En 1999, elles furent ainsi placées sur la liste des candidats potentiels, point de départ de la préparation du dossier de nomination. Cet article vise à présenter l’ensemble des processus qui ont conduit à la décision de l’Unesco, en même temps qu’il offre un témoignage de première main sur ce « long voyage » vers l’inscription des kayas sur la liste du patrimoine mondial
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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