1,721,164 research outputs found

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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

    Conserved nucleotides in an RNA essential for hepatitis B virus replication show distinct mobility patterns

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    Contains fulltext : 34986.pdf (Publisher’s version ) (Open Access)The number of regulatory RNAs with identified non-canonical structures is increasing, and structural transitions often play a role in their biological function. This stimulates interest in internal motions of RNA, which can underlie structural transitions. Heteronuclear NMR relaxation measurements, which are commonly used to study internal motion, only report on local motions of few sites within the molecule. Here we have studied a 27-nt segment of the human hepatitis B virus (HBV) pregenomic RNA, which is essential for viral replication. We combined heteronuclear relaxation with the new off-resonance ROESY technique, which reports on internal motions of H,H contacts. Using off-resonance ROESY, we could for the first time detect motion of through-space H,H contacts, such as in intra-residue base-ribose contacts or inter-nucleotide contacts, both essential for NMR structure determination. Motions in non-canonical structure elements were found primarily on the sub-nanosecond timescale. Different patterns of mobility were observed among several mobile nucleotides. The most mobile nucleotides are highly conserved among different HBV strains, suggesting that their mobility patterns may be necessary for the RNA's biological function

    Statutory interpretation and native title extinguishment: expanding constructional choices

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    This article examines the scope and application of the statutory construction assessment that underlies the consistency evaluation of native title rights. Introduction Native title jurisprudence is derived from the common law. The concept of native title and its re-institutionalisation into the underlying land law framework emanates from the conclusions of the High Court of Australia in Mabo [No 2]. This decision revised the architecture of the ownership framework underpinning Australian land law. The Court allowed native title rights and interests to be recognised in circumstances where they could be shown to have survived the impact of colonisation and the assertion of sovereignty by the United Kingdom. The conceptualisation of native title was given statutory validation in the Native Title Act 1993 (Cth) (‘NTA’), which outlined the mandatory requirements for establishing native title rights and interests. The statutory validation of native title gave it a strong legislative foundation, and prompted the High Court to reify native title as a statutory rather than a common law concept. One of the most distinct and enduring characteristics of native title rights and interests in Australia is their susceptibility to extinguishment. The scope and range of the doctrine of extinguishment is sweeping. Native title rights and interests may be extinguished by the exercise of an inconsistent grant of sovereign power, whether the inconsistency is express or implied and whether it is manifest through the issuance of a specific grant or through legislative acts. Determining whether an exercise of sovereign power is consistent with the recognition of native title rights and interests is therefore the operational fulcrum underpinning the extinguishment process. In this article, the scope and application of the statutory construction assessment that underlies the consistency evaluation is examined. The focus is upon legislation enacted prior to the Racial Discrimination Act 1975 (Cth) (‘RDA’) and the NTA because these Acts do not attract the NTA validation provisions and therefore must be assessed in accordance with common law processes. The primary contention of this article is that the interpretative strategy for determining the legislative intent of Acts predating the RDA and the NTA needs to be broadly purposive rather than textualist in orientation to ensure that a range of relevant inter-contextual factors and policies are properly considered. A purposive approach to statutory construction provides a more effective foundation for courts in evaluating the underlying objectives connected with the implementation of native title rights and interests. This is despite the fact that their recognition postdates the implementation of the Act under consideration in a particular case

    Dispelling the Myths Behind First-author Citation Counts

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    We 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

    Author Index

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    koamabayili/VECTRON-author-checklist: VECTRON author checklist

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    We 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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