1,720,956 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
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
Residue of Pesticides in Fruits, Vegetables, and Their Management in Ethiopia
No full textIn Ethiopia, using pesticides to manage pests in the growing of fruits and vegetables is a standard practice. Various classes of pesticides have been approved to combat pests, but the majority of those in use now are outdated broad-spectrum insecticides with significant residual effects on crops of freshly eaten fruits and vegetables. This review reveals that Ethiopia’s assessment of the residual pesticide level in fruits and vegetables has been lacking. According to the reviewed literature, crops that are often treated with pesticides in many countries have significant residual pesticide levels. However, Ethiopia has not adequately reported on this issue. Furthermore, due to a lack of knowledge regarding the impact of pesticide residues on human health, Ethiopians frequently use pesticides improperly to control pests in fruits and vegetables. The majority of consumers eat their fruits and vegetables unprocessed, without washing or cooking them first. To reduce the risk of pesticide residues in fruits and vegetables for consumer safety and to battle the health effects of toxic chemicals in humans, monitoring pesticide residues and raising awareness about the adverse effects of pesticides on humans are urgently needed. Before they may be registered and sold, pesticide residues in fruits and vegetables as well as in the environment must also undergo proper testing and evaluation. New pesticide generations that have fewer side effects on fruits and vegetables must also be developed. By washing, peeling, canning, or boiling fruits and vegetables before consumption, the detrimental effects of pesticide residues on human health can be minimized
The role of baculoviruses in controlling insect pests: A review
No full textAbstractBaculovirus play a major role in the control of insect pests that reduce the negative effect of synthetic insecticides on non-target groups and latter improve the integrated pest management for sustainable, effective and economical insect pest management practices. However, its impact on the control of insect pests is not well recognized. This review assesses the role of baculoviruses in controlling insect pests and indicates future research areas. Many viruses occur naturally, but some are produced commercially. Baculovirus is one of the microbial biopesticides that play an important role in providing pest management tools in areas where pesticide resistance, niche markets, and environmental concerns reduce the use of synthetic insecticide products. The Nucleopolyhedrovirus and Granulovirus are the two major groups of baculoviruses used as microbial biocontrol agents. Baculoviruses are important for insect pest management, reducing insecticide resistance and host specificity. On the other hand, the high specificity of baculoviruses is reported as a limitation for agricultural uses, since growers may need one product to use against a different pest. However, virologists have been working on increase the effectiveness of viral biocontrol agents through genetic engineering. Genetic engineering plays a vital role to improve insect killing rates, infectivity, and ultraviolet resistance to enhance viruses for insect control. Recombinant viruses have been engineered with the goal of shortening the time required for infection to kill insect pests. Still now, commercialization of baculoviruses is a major challenge, therefore researchers and stakeholders give attention to optimize massive production of baculoviruses for integrated insect pest management
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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