1,721,002 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
How early is it possible to predict cerebral palsy and to differentiate between the spastic and the dyskinetic forms?
No full textNO ABSTRAC
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
Shifting of the body center of gravity in low-risk preterm infants: A video-pedoscope study
No full textAim: To evaluate whether there is any developmental course of the shifting of the center of gravity (COG) in healthy preterm infants. Methods: Eleven healthy preterm infants were assessed on a computerized pedoscope from early preterm to term age. Data from the pedoscope and the videorecorder were analyzed with a special software for the assessment of the COG shifting. Infants were placed on the pedoscope in supine position for 5 min. We scored the positions of the COG during its shifting, the body parts most frequently involved in its shifting and the shifting’ amplitude at each epoch. We scored the frequency of the COG shifting in head, trunk and bottom, its direction and amplitude using a semi-quantitative scale. Results: A developmental course of the COG shifting from preterm throughout post-term ages was demonstrated, with COG position displaced from head to bottom. The shifting amplitude decreased with increasing age. Lateral shifting were never observed. Interpretation: The developmental course of the COG shifting suggests the maturation of postural behaviour in healthy preterm infants. The displacement of the COG from head to bottom and the reduced amplitude of the COG shifting from preterm to post-term age indicates a more stable body position
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
[P1.02]: Specific atypicality in preserved speech variant?
No full textIntroduction Rett syndrome, caused by mutations in the gene MECP2 for methyl‐CpG‐binding protein 2, begins in seemingly normal 6‐ to 18‐month‐old children. MECP2 is primarily expressed in the brain, in neurons, when they become functionally mature, and before synaptogenesis. Classic Rett syndrome has been reported in one in 10,000 females, and the atypical form (variants), implying the absence of one or more expected signs, in as many as one in 5000 females. The main issues addressed refer to the developmental course and its early (specific) signs of a rare atypical form of Rett, the Preserved Speech Variant. Methods Case report: One girl with a MECP2 mutation (del(378‐43)‐964 ins965GA) meeting clinical criteria for Preserved Speech Variant, was longitudinally observed from 6 months to 10 years of age. As the diagnosis was approved by mutation testing at the girl's age of 4 years, we retrospectively analysed family videos and the clinical history up to this age. Furthermore, we prospectively applied the following methods up to 10 years: the Austrian Rett Survey; behavioural observation in her natural surroundings (video data); assessment of severity in Rett syndrome; optimality questionnaires; Austrian Communicative Development Inventories; spontaneous speech samples; language development tests. Results Episodic events of atypical and stereotyped motor and (pre‐)linguistic behaviour increased over time and became predominant at two years of age, the onset of regression. A peculiar quality of early motor patterns as well as communicative idiosyncrasies were among the deviant patterns observed. Discussion The comprehensive analyses suggest a qualitative deviation already during the pre‐regression period that impacts on the entire developing neuro‐cognitive system. The unique possibility to “look back” gives new insights into the genetic interference with normal brain development
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