1,720,958 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
Fault-zone anatomy and fracture distribution in poorly lithified sediments of the Tarquinia basin (central Italy): Implications for fault zone evolution
No full textSyn-sedimentary, sub-seismic scale extensional faults in poorly lithified Pliocene sandstones are well exposed in an abandoned quarry SW of the Tarquinia village (Central Italy). Geometry and spatial distribution of main normal fault segments, and related deformational features (including secondary synthetic and antithetic faults, fault rocks, joints, deformation bands) were carefully mapped in detail both along and across major fault strikes. Fault segments are 20-30 m long and strike mainly NW-SE. They are partially overlapped and connected by either relay ramps or transfer faults. Kinematic analyses on fault slickensides indicate nearly pure dip-slip sense of movement. Estimated displacements (throws) never exceed 15m. Fault damage zones are 5-10m wide and consist of subsidiary synthetic and antithetic normal faults, extensional fractures and deformation bands. Their relative abundance and distribution is strongly controlled by the position within the fault zones. Subsidiary faults and deformation bands accommodate most of the total deformation in approaching the fault tips. On the other hand, indurated master slip surfaces accommodate most displacement in the central sectors of the fault zones. Near vertical, 5-10 cm spaced joints are frequent in their footwall damage zones. Cumulative statistical analysis of joint data indicates that they are systematically orthogonal to the fault strike. Joint paralleling the fault strike are strongly subordinated. Detailed AMS analyses were also carried out in the proper rock types along transects perpendicular to fault strikes. Results show that K1 orientations are consistent with the stretching directions inferred from structural data. Magnetic fabrics appear reworked in approaching fault surfaces.Based on these integrated information, we propose a structural evolutionary model for normal fault growth in poorly lithified sediments, which involves the development of fault strike-perpendicular joints during the lateral migration of fault tips. Numerical-analytical modelling (FRAPtre) validates the proposed evolutionary pathway and shows that such a fracture evolution and distribution may have a considerable impact on the fluid flow modelling for the successful exploitation of fractured reservoirs
Time dependent structural architecture of subsidiary fracturing and stress pattern in the tip region of an extensional growth fault system, Tarquinia basin, Italy
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