1,720,958 research outputs found
Characterisation of the Latvian and Swedish Sweet and Sour Cherry Genetic Resources
Get PDFA wide diversity of cherry varieties are collected in the Latvian and Swedish genetic resources collections, which consists of landraces and selections of local breeders, adapted to the local climate and growing conditions (winter hardy and disease resistant) as well as germplasm that results from years of scientific exchange and co-operation with the world’s leading plant research institutes. The introduction of this material into the breeding programs is largely dependent on the level of characterization. The genetic diversity and internal structure of Latvian and Swedish sweet and sour cherry genetic resources collections has been investigated using phenotypical characterization and evaluation in combination with SSR and self-incompatibility gene specific molecular markers. Phenotypical and molecular characterization revealed high phenotypic and genetic diversity of analysed germplasm as well as the relatedness of Baltic and Scandinavian sweet and especially sour cherry landraces which indicates a possible common historical origin. Local Baltic-Scandinavian cherry varieties were also differentiated from other cherry germplasm by the frequency of self-incompatibility alleles detected using gene specific molecular markers. Self-incompatibility allele information gained from this study will be also useful in breeding programmes for the planning of crosses and conservation of alleles. The use of different characterization methods of cherry genetic resources also facilitated methodological observations, applicable to cherry germplasm characterization. It was concluded that thorough evaluation of genetic diversity and internal structure of cherry genetic resources collections should include both phenotypic and molecular characterization. The information of genetic relatedness revealed by SSR markers did not show direct correspondence with the relatedness information detected by phenotypic characterization, regardless of the number of analysed markers. Therefore a sufficient preliminary description of cherry genetic resources and discovery of internal genetic relatedness of germplasm could be obtained by using phenotypic description in combination with a small set of highly polymorphic SSR markers in combination with available gene specific markers
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
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
Meteorological dataset of experimental site
No full textThe dataset comprises meteorological (environmental) data collected at the GreenAgroRes project (No. VPP-ZM-VRIIILA-2024/1-0002) study site located at the Institute of Horticulture (LatHort) experimental fruit-growing fields in Dobele, Latvia. These data characterize the environmental conditions at the study site throughout the project period. Field experiments are inherently conducted at specific locations and times, both of which influence the expression of biological traits. Therefore, in crop research it is essential to evaluate interactions between organisms and their environment. Environmental conditions are primarily defined by weather variables, which are described through meteorological data; consequently, the collection and inclusion of these data in the analysis were of critical importance
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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