1,720,976 research outputs found
V.faba.Multi_Cla_Field_LeafFragments
No full textRGB images of faba bean fragments collected in the field and bearing symptoms of plant diseases, annoted by classification at the whole image level (attribution to one causal species
S.tuberosum_Multi_Cla_Field_Leaves
No full textRGB images of potato fragments collected in the field and bearing symptoms of plant diseases, annoted by classification at the whole image level (attribution to one causal species
Cabbage and turnip: rediscovering old friends
No full textCookery book for recipes involving Brassica species from the BrasExplor project. Recipes come for the different partners of the project
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
Stable epidemic control in crops based on evolutionary principles: Adjusting the metapopulation concept to agro-ecosystems
No full textInternational audienceIn agro-ecosystems, epidemics reduce crop yield. Disease development depends on interactions in time and space between host plants, pathogens, the environment and humans. There is an urgent need to reconsider disease control tactics by linking ecological and evolutionary concepts at the landscape scale, as achieved for natural ecosystems. The aim of our work is to adjust the geographic mosaic of coevolution theory between hosts and pathogens to agro-ecosystems. In agro-ecosystems, adaptation dynamics at the landscape scale depend jointly on annual epidemics, the flow between demes, and human actions, which exacerbate homogeneities in time and space. We describe a framework to take into account these direct and indirect human actions on host agro-metapopulations, which influence the size and composition of pathogen agro-metapopulation demes. By linking disciplinary concepts it becomes possible to optimize the stabilization of disease control efficacy by designing management strategies to selectively apply evolutionary costs. At present, the pathogen agro-metapopulation adapts to its host and the other way around does not occur. However, these evolutionary costs can be used to maintain the pathogen agro-metapopulation locally non-adapted to the host agro-metapopulation. The use of this framework will allow crop protection approaches to be redesigned by modifying the host agro-metapopulation dynamics depending on the observed state of the pathogen agro-metapopulation. (C) 2012 Elsevier B.V. All rights. reserved
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
MRI, leaf water relation and gene expression and tuber biochemical data for analysis of the effects of water stress on tuber development and quality
No full textThis dataset contains the raw and processed MRI images describing the growth kinetics and spatialization of individual tubers belonging to potato plants (Rosanna cultivar of Solanum tuberosum) cultivated in pots and subjected to two water regimes and physiological, biochemical and gene expression data measured on leaves and tubers of the same plants. All these data contribute to highlight long-term effects of water stress on growth kinetics, spatialization and quality of potato tubers
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
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