1,721,019 research outputs found
Tree diversity affects temperature sensitivity of soil organic matter decomposition in rhizosphere
No full textNational Natural Science Foundation of China http://dx.doi.org/10.13039/501100001809Natural Science Foundation of Hunan Province http://dx.doi.org/10.13039/501100004735Key Research and Development Program of Hunan Provinc
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
Energy flows through nematode food webs depending on the soil carbon and nitrogen contents after forest conversion
No full textFunder:
http://dx.doi.org/10.13039/501100002858
China Postdoctoral Science Foundatio
Soil organic matter, nitrogen and pH driven change in bacterial community following forest conversion
Full text linkFast expansion of forest conversion to monoculture plantations has profound effects on ecosystem structure and functions. Through altering litter and rhizodeposition composition as well as one-sided effects on soil chemical properties, monoculture plantations may tremendously decrease biodiversity and functions of soil microorganisms. We investigated the impacts of conversion of natural evergreen and deciduous broad-leaf forest (Forest) to four 5-year old monoculture plantations (plantations), such as Camellia oleiferaAbel.(Oil), Amygdalus persica (Peach), Myrica rubra (Lour.) S. et Zucc.(Berry) and Cunninghamia lanceolata (Lamb.) Hook.(Fir), on soil properties and bacterial community and its driving factors using the high-throughput sequencing technique. Soil organic carbon, and total nitrogen decreased up to 59%–83% and pH increased by 0.31 units following the forest conversion. The changes in soil properties and bacterial communities were depended on the type of the plantation. Bacterial diversity increased by 6.5% after forest conversion. The relative abundances of Acidobacteria, Proteobacteria, Bacteroidetes and Actinobacteria in the Forest were remarkably higher compared with all plantations, whereas that of Chloroflexi and Planctomycetes was less. All plantations had low abundance of Acidobacteria, while the highest abundance of Proteobacteria, Actinobacteria and Planctomycetes was observed under Peach. The co-occurrence patterns of bacterial communities identified rare taxa rather than abundant taxa as central players in bacterial network. The redundancy analysis indicated that the variation in the composition of bacterial community was mainly driven by soil pH, organic carbon and total nitrogen content. Therefore, good management practices, such as reasonable fertilization and soil erosion prevention, need to be developed for monoculture plantations to mitigate the depletion of nutrients and to enhance microbial functioning after forest conversion.https://opus.govst.edu/fac/1077/thumbnail.jp
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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