1,721,064 research outputs found
Towards the Hellenic National Vegetation Database: VegHellas
No full textAbstract Recently a new initiative was launched aimed at building a central database to hold all so far published and unpublished relevés available in Greece – the Hellenic National Vegetation Database (VegHellas). All literature sources, widely dispersed and often poorly accessible, containing vegetation relevés from Greece have been compiled and stored in a bibliographical database. To date this database houses more than 200 references. Between 1944 and 2011, more than 30,000 phytosociological relevés were made in Greece, and these are stored either as hard copies or electronically. Currently, data on more than 22,000 vegetation plots, entered in the TURBOVEG database system are georeferenced to a certain level of precision (e.g. mountain range, mountain peak, specific locality, island, phytogeographical region, grid cell 10 x 10 km etc.). Plant nomenclatural problems, such as the use of different synonyms for the same taxon by different researchers in different years will be solved using the standardized Hellenic Vascular Plant Checklist (HVPC), currently close to completion. This checklist will offer a scientific basis for consistent nomenclatural reference. A database with chorological, life-form and other plant-trait information for each taxon, will also be linked to the vegetation-plot records. This will allow using VegHellas not only as a tool for the formulation of a national system of vegetation classification, but also in multiple applications in ecological, biogeographical and applied environmental research. The preparation of a syntaxonomic overview of the vegetation of Greece is currently in progress. Following the basic principles of the checklist of high-rank syntaxa of the European vegetation, the Hellenic syntaxa checklist will be produced down to the syntaxonomic level of alliance to serve as a precursor of a full syntaxonomic checklist including all associations
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
Genus level DNA sequence data for three genes (matK, rbcL, trnH-psbA) for the paper: A comprehensive, genus-level time-calibrated phylogeny of the tree flora of Mediterranean Europe and an assessment of its vulnerability
No full textThis data file contains the consensus DNA sequences in fasta format, of 64 tree genera found in Mediterranean Europe, following the checklist of Médail et al. (2019).
The data are used in a manuscript submitted for publication to Botany Letters and currently under revision. The manuscript is entitled: "A comprehensive, genus-level time-calibrated phylogeny of the tree flora of Mediterranean Europe and an assessment of its vulnerability". Its authors are: Marwan Cheikh Albassatneh, Marcial Escudero, Loic Ponge*, Anne-Christine Monnet, Juan Arroyo, Toni Nikolic, Gianluigi Bacchetta, Francesca Bagnoli, Panayotis Dimopoulos, Agathe Leriche, Frédéric Médail, Anne Roig, Ilaria Spanu, Giovanni Giuseppe Vendramin, Arndt Hampe, Bruno Fady.</p
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
