1,721,060 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
Can vision of the body ameliorate impaired somatosensory function?
No full textViewing the body is reported to improve tactile acuity (Kennett et al., 2001). The aim of the present study was to investigate whether this effect might be useful in improving somatosensory deficits of brain damaged patients. To support this proposal, we firstly tested the hypothesis that vision might modulate tactile performance when tactile information is limited. Thirty-two healthy subjects performed a two points discrimination task (2PDT) in three conditions: looking at their stimulated forearm, at a neutral object or at a rubber foot. The results showed that the effectiveness of visual enhancement of touch varies as a function of subjects’ tactile acuity. Moreover, the accuracy in 2PDT was higher when viewing their arm only in subjects with lower tactile sensitivity. To directly demonstrate that viewing the body might ameliorate tactile deficits, the same experiment was conducted on 10 brain damaged patients suffering a reduced somatosensory sensitivity. An amelioration of the performance was found in viewing arm condition. These findings suggest that the interaction between different sensory modalities might be effective in ameliorating deficits in single modalities
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
Vision of the body affects touch accordingly to SI organization
No full textTactile acuity improves when subjects look at their body (Kennett et al., 2001). However it is not yet clear whether this effect strictly depends upon the vision of the tactilely stimulated body part or arises because any body part provides an arousing visual stimulus relevant to bodily sensation. To study this issue, 32 normal subjects’ tactile acuity was assessed, by means of a two point discrimination task (2PDT), in three different body parts: the hand, the cheek and the foot. The test was performed twice, i.e. with or without visual stimulation. This consisted for half subjects in viewing their hand and for half in viewing a neutral object, presented in the same spatial position as the hand. All subjects were seated so that the hand was midway in external space between cheek and foot.. Viewing the hand, but not the neutral object, improved subjects’ 2pdt thresholds on the hand and on the cheek, but not on the foot. We suggest that viewing the hand modulated tactile representation in early somatosensory cortex (SI). The hand and face representations are adjacent and lateral SI, while the foot representation is distant and more medial. The benefit of viewing the hand for touch on the hand and the cheek but not the foot shows that viewing the body modulates SI activity according to a somatotopic principle. Vision may provide a top-down modulatory input that spreads across areas co-represented in the SI homunculus
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
TIA887614 Supplemental Material - Supplemental material for Hearing in Adults: A Digital Reprint of the Main Report From the MRC National Study of Hearing
No full textSupplemental material, TIA887614 Supplemental Material for Hearing in Adults: A Digital Reprint of the Main Report From the MRC National Study of Hearing by Michael A. Akeroyd, George G. Browning, Adrian C. Davis and Mark P. Haggard in Trends in Hearing</p
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
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