1,720,977 research outputs found
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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Effects of caneburning herbicides on red raspberry in the Pacific Northwest
Full text linkPrimocane management in red raspberry using herbicides to increase berry production has been practiced for more than forty years in the Pacific Northwest. Given the changes in cultivars, herbicides, and machine harvesters since its development during the 1970s, a study was initiated in 2010 to determine whether caneburning of current Pacific Northwest raspberry cultivars still is a useful practice. The first trial was conducted on commercial fields using red raspberry cultivars 'Meeker', 'Coho' and 'Cascade Bounty', while the second trial was conducted on a research field at the Washington State University Northwestern Washington Research and Extension Center near Mount Vernon, WA using 'Meeker' and 'Cascade Bounty'. Caneburning with oxyfluorfen and carfentrazone was evaluated in both trials, while terbacil with and without caneburning was evaluated in the first trial. All caneburning treatments successfully eliminated the first flush of primocanes and suppressed primocane regrowth of all cultivars in the early season. Oxyfluorfen suppressed 'Meeker' primocane regrowth about 14 days longer than did carfentrzone in both trials. Oxyfluorfen also suppressed 'Cascade Bounty' primocane regrowth 14 days longer than did carfentrzone in the first year in both trials and 46 days longer in the second year in the second trial. Most caneburned raspberry growth rates were similar to non-caneburned raspberry by about 80 days after treatment in both trials, except 'Cascade Bounty' growth rate was suppressed by caneburning until about 119 days after treatment on the second trial. Two-year average yield of 'Meeker' was increased 27 to 31% by caneburning in the first trial and 33 to 40% in the second year of the second trial. 'Coho' yield was not increased by caneburning and 'Cascade Bounty' yield was not increased by caneburning in either trial. Caneburning reduced time spent on dormant-season training of 'Meeker' by about 45 hr/ha/person. Weed control provided by caneburning herbicide alone ranged from 73 to 88% until early Jun. when weed pressure was high, while weed control exceeded 96% in late Aug. when weed pressure was low. Terbacil with or without caneburning herbicides provided over 89% weed control in late Aug. regardless of weed pressure
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Herbicide effects on growth and seed germinability of broadleaf dock (Rumex obtusifolius)
Full text linkKnowing which herbicides to use against a weed species coupled with a knowledge of when the seeds are most likely to germinate allows growers to devise successful management programs. To obtain these values for broadleaf dock (Rumex obtusifolius L.) growing under Pacific Northwestern (PNW) environmental conditions, two field herbicide trials were established in a highly infested fallow field near Mount Vernon, Washington, USA, and a subsequent seed germination test was conducted. In the first trial, 16 herbicides registered in blueberry (Vaccinium corymbosum L.) were applied May 23, 2016 to bolting broadleaf dock and, in a second trial, 18 herbicides were applied October 28, 2016 to broadleaf dock regrowth approximately one mo after mowing. Seed from broadleaf dock plants surviving spring herbicide application were collected to assess the herbicidal impact to germination. In both herbicide trials, glyphosate at 3.86 kg ae ha-1 provided the greatest broadleaf dock control (94% at 8 wk after spring treatment and 20% at 3 wk after fall treatment). Also in the spring trial, terbacil (2.69 kg ai ha-1), diuron (2.69 kg ai ha-1), and dichlobenil (4.39 kg ai ha-1) gave 85%, 68%, and 65% control at 8 wk after treatment, respectively. Fall-applied pronamide (2.24 kg ai ha-1) and dichlobenil (4.39 kg ai ha-1) provided >85% control on April 21, 2017. Among spring-applied herbicides, only clopyralid (0.14 kg ae ha-1) reduced seed germination compared to seed gathered from nontreated plants (27%), indicating that this herbicide applied to bolting broadleaf dock may slow the spread of this weed in PNW berry fields. Further, because broadleaf dock seed was shown to optimally germinate at 20oC, it appears that preemergence herbicide treatments should be applied prior to the beginning of summer in the PNW to optimize control of germinating broadleaf dock seeds
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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