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
Balance Rehabilitation in Patients with Instability of Vestibular Origin: Comparison of Conventional Exercises and Instrumental Training
No full text
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
Comparison of Cawthorne-Cooksey exercises and sinusoidal support surface translations to improve balance in patients with unilateral vestibular deficit
No full textOBJECTIVE: To compare the effectiveness of vestibular rehabilitation by using
Cawthorne-Cooksey exercises with that of instrumental rehabilitation.
DESIGN: The main study (n=32) used a pre-post rehabilitation (A-B) design; the
ancillary studies used a subset of 11 patients 1 month before rehabilitation
versus pre-post rehabilitation (A-A-B design) and 9 patients pre-post
rehabilitation versus 1 month after (A-B-B design).
SETTING: Division of physical therapy and rehabilitation at a scientific
institute in Italy.
PARTICIPANTS: Patients (Cawthorne-Cooksey, n=17; instrumental rehabilitation,
n=15) with a complete or incomplete unilateral vestibular lesion due to ischemic,
inflammatory, cranial nerve VIII sectioning, or unknown cause.
INTERVENTIONS: Cawthorne-Cooksey exercises or instrumental rehabilitation
training consisting of standing with eyes open (EO) or closed (EC) on a platform
moving, relative to the subjects, in the anteroposterior (AP) or mediolateral
direction, at a sinusoidal translation frequency of 0.2 or 0.6Hz; training
sessions for both interventions were twice daily, 30 minutes per session, for 5
days.
MAIN OUTCOME MEASURES: Body sway and subjective score of sway during quiet stance
with EO or EC, with feet 10cm apart (FA) or together (FT); the standard deviation
of the AP displacement of the malleolus, hip, and head during AP platform
translations; the Dizziness Handicap Inventory (DHI); and performance-oriented
evaluation of balance and gait (according to Tinetti).
RESULTS: Both interventions improved patients' balance. Under each postural and
visual condition, both groups showed reduction in body sway, and the post
rehabilitation sway values approached those observed in normal subjects;
improvement was significantly better for instrumental rehabilitation under FA EO,
FA EC, and FT EC conditions. All patients reported a subjective feeling of
increased steadiness. Sway recorded 1 month before treatment did not differ from
that at the start of treatment. The follow-up evaluation showed persistence of
effect. Parallel to the improved stability, a decrease in the SD of the
displacement of hip and head in balancing on the movable platform was present in
both groups; improvement was better in the instrumental rehabilitation group than
the Cawthorne-Cooksey group under the EC condition. Balance and gait assessment
improved to the same extent in both groups. Scores on the physical, functional,
and emotional questions of the DHI improved significantly in both groups after
treatment, but to a larger extent in the instrumental rehabilitation patients.
CONCLUSIONS: Both Cawthorne-Cooksey and instrumental rehabilitation are effective
for treating balance disorders of vestibular origin. Improvement affects both
control of body balance and performance of activities of daily living. The larger
decrease in body sway and greater improvement of DHI after instrumental
rehabilitation suggests that it is more effective than Cawthorne-Cooksey
exercises in improving balance control
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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