1,720,993 research outputs found
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
QUANTIFYING THE EFFECT OF ARBUSCULAR MYCORRHIZAL FUNGI INOCULATION OF FIELD GROWN WINE GRAPES IN NEW YORK STATE
No full text92 pagesCommercial bioinoculants for horticultural use that contain arbuscular mycorrhizal fungi (AMF) offer a potential alternative to conventional grapevine (Vitis) management strategies that are dependent on the use of agrochemicals. This field study assessed whether inoculation with AMF increased root length colonization, vine growth, leaf blade nutrient concentration, bud cold hardiness, and vine water status under a range of application methods, soils, and rootstocks. AMF inoculation increased root mycorrhizal colonization of ‘Pinot Noir’ (Vitis vinifera) grafted onto rootstocks ‘Courderc 3309C’ (Vitis riparia × Vitis rupestris) and ‘Millardet et de Grasset 101-14’ (Vitis riparia × Vitis rupestris). However, inoculation did not increase root mycorrhizal colonization of ‘Riesling’ (Vitis vinifera) grafted onto rootstocks ‘Courderc 3309C’ (Vitis riparia × Vitis rupestris) and Selection Oppenheim four (Vitis berlandieri × V. riparia), ‘Regent’ (Vitis vinifera) grafted onto rootstock ‘Millardet et de Grasset 101-14’ (Vitis riparia × Vitis rupestris), and ‘Verdejo’ (Vitis vinifera) grafted onto rootstock ‘Courderc 3309C’ (Vitis riparia × Vitis rupestris). Findings do not support the use of commercial bioinoculants for increased grapevine root length colonization; however, these results may be affected by competition between indigenous and commercial AM fungi, environmental and soil conditions, scion-rootstock interactions, and bioinoculant quality
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
UNDERSTANDING AND IMPROVING VITICULTURAL RESILIENCE IN THE DORMANT SEASON: TRANSCRIPTOMICS OF COLD ACCLIMATION, PHENOMICS OF DEACCLIMATION, DEVELOPMENT OF PRACTICAL TOOLS AND AI-EMPOWERED MODELING
No full text365 pagesDue to increasingly frequent unseasonable temperature fluctuations during the dormant season, the grape and wine industries face significant threats under climate change. Late frost in spring and extreme low temperatures in winter kills young shoots and threaten the survival of the whole vine, respectively, impairing vineyard productivity. A nuanced understanding of grapevine dormant season physiology and the development of novel management methods to enhance viticultural resilience in the dormant season are pivotal for the sustainability of grape and wine industries in a changing world. The objectives of this dissertation are: 1) to elucidate the genetic control of grapevine dormant season physiology; 2) to assess deacclimation across diverse grapevine populations; 3) to develop and evaluate novel management methods to improve viticultural resilience in the dormant season; 4) to create and deploy a robust, AI-empowered grapevine bud cold hardiness prediction model to support vineyard viability assessment in cool climate viticultural regions in North America. Methodologically, this study employs comparative transcriptomics combined with experimentation on dormant buds in controlled conditions to unravel the molecular mechanisms of cold acclimation and dormancy transition. Over three years, deacclimation rates and budbreak timing were measured in five Vitis populations with diverse genetic backgrounds to facilitate the identification of genetic variations controlling deacclimation rate and budbreak timing through quantitative trait loci (QTL) analysis. The impact of exogenous abscisic acid (ABA) on the grapevine bud transcriptome during cold acclimation and deacclimation was evaluated, and the feasibility of using a synthetic ABA analog, tetralone-ABA, as a sprayable product to enhance dormant season resilience was tested. Furthermore, a new grapevine bud cold hardiness model, NYUS.2, was developed using 10,157 data points and 72 temperature-derived features through automated machine learning. This model was deployed in two web applications for global historical analysis and regional real-time monitoring of grapevine bud cold hardiness. By integrating genomics, transcriptomics, grapevine physiological evaluation, development and evaluation of vineyard management tools and AI-empowered modeling, this work paves the way for more resilient viticultural practices to help maintain the sustainability of the grape and wine industries in an era of climate uncertainty
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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