1,720,956 research outputs found
Further evidence of the synonymy between Branchipus schaefferi Fisher, 1834 and B. visnyai Kertés, 1956 (Crustacea, Anostraca)
No full textA RAPD, AFLP and SSR linkage map, and QTL analysis in European beech (Fagus sylvatica L.)
No full textThe genetic linkage map of European beech
(Fagus sylvatica L.) that we report here is the first to our
knowledge. Based on a total of 312 markers (28 RAPDs,
274 AFLPs, 10 SSRs) scored in 143 individuals from a F1
full-sib family. Two maps (one for each parent) were
constructed according to a “two-way pseudo-testcross”
mapping strategy. In the male map 119 markers could be
clustered in 11 major groups (971 cM), while in the
female map 132 markers were distributed in 12 major
linkage groups (844 cM). In addition, four and one minor
linkage groups (doublets and triplets) were obtained for
the male and female map respectively. The two maps
cover about 82% and 78% of the genome. Based on the
position of 15 AFLP and 2 SSR loci segregating in both
parents, seven homologous linkage groups could be
identified. In the same pedigree we investigated the
association with genetic markers of several quantitative
traits: leaf area, leaf number and shape in 2 different
years, specific leaf area, leaf carbon-isotope discrimination
and tree height. A composite interval-mapping
approach was used to estimate the number of QTLs, the
amount of variation explained by each of them, and their
position on the genetic linkage maps. Eight QTLs
associated with leaf traits were found that explained
between 15% and 35% of the trait variation, five on the
female map and three on the male map
Erratum: A RAPD, AFLP and SSR linkage map, and QTL analysis in European beech (Fagus sylvatica L.) (Theoretical and Applied Genetics (2003) DOI:10.1007/S00122-003-1461-3)
No full text
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
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