1,720,965 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
Multiscale lineament analysis and permeability heterogeneity of fractured crystalline basement blocks
Full text linkISSN:1869-9510ISSN:1869-9529ISSN:1869-952
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
The Lærdal-Gjende Fault (southwestern Norway): A new, high-resolution, combined structural-geochronological study
No full textThe Lærdal-Gjende Fault is a major fault in southwestern Norway with a strike length of over 180 km. It is a multiply reactivated fault dipping gently to the NW and accommodating predominantly top-to-the-NW extensional brittle faulting. At the sampled site in Lærdal, the fault is made up of a several metre thick cohesive greenish cataclastic damage zone and a c. 1 m thick gouge core, developed at the expense of mylonitic orthogneiss. The brittle component is generally interpreted as the spatial, upward continuation of the Hardangerfjord Shear Zone, one of the large Devonian detachments that reactivated as an extensional fault at shallower structural levels accommodating major top-to-the-NW ductile shearing during the Caledonian orogenic collapse. The Lærdal-Gjende faulting has been dated so far by paleomagnetic methods between the Permian and Early Cretaceous (Andersen et al., 1999). Fossen et al. (2016) have costrained further faulting at about 140 Ma by K-Ar illite analysis. Our main aim is to present preliminary data on a work still in progress, dealing with a high-resolution reconstruction of the temporal evolution of this complex, long-lived fault zone, by means of a detailed structural analysis of the fault architecture coupled with K-Ar geochronology of synkinematic illite. To better constrain the fault’s evolution and to further refine the K-Ar dating methodology, we collected, characterised and dated five samples representing different structural domains. Detailed structural analysis allowed to sample a coarse, angular cataclasite (sample LG_GVI_4), an indurated red gouge (LG_GVI_6), a fine grained foliated greenish gouge (LG_GVI_5), a more plastic, clay rich gouge (LG_GVI_7) and, finally, a very continuous and only a few mm thick brown clay smear along the main slip surface (LG_GVI_8). Illite from all samples was separated into five different grain size fractions (10-6, 6-2, 2-0.4, 0.4-0.1, < 0.1 m), each of which was also analysed by XRD and TEM. Ages vary between 200 and 57 Ma with a strong correlation with grain size, whereby the coarser fractions yield the older ages and the finer the younger ones. The ages of the coarse grain size fractions are identical within the analytical error, c. 184 Ma, thus documenting a likely and significant faulting episode during the Jurassic rifting phase of the North Sea. The finest fractions, mostly barren of inherited protolithic K-bearing phases and enriched instead in authigenic synkinematic illite, constrain the maximum age of the latest recorded increment of faulting. Data permit to identify up to four different slip episodes at 120, 87, 78, 57 Ma, suggesting that the Lærdal-Gjende Fault accommodated the hyperextension of the Mid-Norwegian margin up to the Late Cretaceous and then reactivated during a Paleocene tectonic event whose meaning is not yet understood. Our new data provide an extraordinary and unprecedented temporal resolution of the faulting history of this important structure, permitting to constrain extensional faulting onshore southwestern Norway all the way down to the Paleocene
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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