1,720,956 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
Hydrodynamic modelling of microplastic transport - A case study on microplastics from traffic emissions in the Göta River
Full text linkFrom graphene science to graphene technology: a bibliometric investigation
No full textTo get an advantage in the scientific and technological competitions between nations, it is necessary to fully understand the value chain of four stages: from pure science to applied science to technology, and finally to commercialization along with product development. However, given heavy investments from both public and private industries being poured into scientific research nowadays, it remains difficult to have comprehensive insights into these innovative conversions, in particular which conditions are required to be able to move from one stage to another. To examine how a theoretical scientific idea can become a commercial product, we chose graphene as the case study due to its attractive structures and properties, which resulted in both academic and industrial potential. Our first contribution is an evaluation methodology on whether graphene science was developing on track with graphene technology, and therefore successfully delivered its application promises. In both aggregate and temporal analyses, we found bibliographic evidence between 2004 and 2017 suggesting the ’Golden Eras’ periods in graphene science and technology in the past despite their exponential growth in publications over time. By using a simulation-based method to calculate the temporal interest level in a particular field, we confirmed these observations that the interest levels in graphene science and technology had already peaked in 2010 and 2012 respectively.
Next, we focused on graphene science and proposed a hypothesis of innovation where new research streams (child fields) are likely to incubate and emerge from more established research streams (parent fields). In the dataset, we applied a co-clustering method to the linguistic information of graphene articles to determine four graphene scientific topics – theory and experimental tests, synthesis and functionalization, sensors, and supercapacitors and electrocatalysts. From the publication proportions and levels of interest, we found their order of emergences to follow an expected sequence from pure science(s) to applied science(s). To validate this stream-based model of innovation, we tested nanotubes and batteries to be the potential parent streams for the four topics. Our findings showed strong incubation signatures of all four topics in nanotubes, and a much weaker one of supercapacitors and electrocatalysts in batteries. Moreover, we confirmed the impacts of the 2004 graphene breakthrough in nanotubes and batteries. Here, the framework on the parent-child relationship between two fields as well as their interactions is our second contribution to the study of science to technology.
From these four topics, we further assembled the theoretical (T) and applied (A) branches in graphene science by evaluating which identified topics are T/A oriented. Following this, we aimed to contribute to the quantification of the interplays between pure research and applied research in both temporal and geographical aspects. Our citation-based method incorporating both direct and indirect cited journal papers indicated a universal and asymmetric dependency between T and A: while T mostly depended on T over time, A inherited mainly from T in the early stage before increasingly depending on itself during its mature stage. Our findings not only captured the knowledge evolution in graphene science but also validated the interactions between pure research and applied research on the innovation model. Lastly, we expected to have an equal contribution to the study of graphene technology besides graphene science by focusing on the regional competition in graphene technology as well as the strategic differences in patent portfolio management. In this study, we identified seven graphene technology areas and compared whether the technology evolution sequence is in parallel with the science evolution sequence. Moreover, by classifying entities into different groups based on their assignee categories (universities, corporations, and others) as well as their accumulated number of patents (three quartile groups), we found significant differences in patenting behaviors between universities and corporations and also between large entities and small entities. While large entities prefer expanding their patent portfolios diversely over multiple technology areas, small entities cannot afford this strategy and have to specialize in a smaller number around their core technologies instead. On the other hand, we proposed and validated a hypothesis on the differences in patenting activities between universities and corporations not only from aggregate analysis but also from studying three representative case studies.
Overall, our contributions in the study of graphene science and graphene technology offer a better understanding of evaluation of progress in science and technology of a given field, in which the ‘golden eras’ might have been in the past despite continuing funding and publication outcomes. Moreover, we confirmed the interactions between the pure science stage and applied science stage in the model of innovation and validated the hypothesis on the emergence of a new field from other mature fields. Finally, our analysis of bibliographic records of patents clearly shows distinguished characteristics in technology portfolio management between universities and corporations, among leading regions, and among entities of different sizes.Doctor of Philosoph
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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