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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Intra-and inter-operator reability of a novel hand protocol during grip movement
Get PDFINTRODUCTION
Quantitative and qualitative measures of human movement can be two important features for
discriminating healthy and pathological conditions, for expressing the outcomes and clinically changes
in subjects' functional state and for helping in the decision making within clinical setting. Clinical scales
are the most frequently used instruments for the upper extremity functional assessment [1]. Currently
there are no methods sufficiently accurate that analyze the hand mobility in clinical practice. The
purpose of the study was to evaluate the Intra-and inter- operator reliability of a novel hand protocol
during grip movement.
METHODS
5 healthy subjects were scheduled for analysis. The experimental protocol required the positioning of 8
optoelectronic cameras and 24 markers. Three reference markers are located on the Head of Radius,
on the Styloid processes of Radius and Ulna to determinate the wrist coordinate frame and global
position and orientation of the model. Then, a marker is placed on the hand dorsum, corresponding to
the position of scaphoid, capitate and lunate bones to determinate the dorsum coordinate frame and
the direction during the movement. A marker is placed on each hand joint (metacarpal, proximal and
distal) and on the top of the finger to determine the position of the segment hand. The subjects perform
a grip movement in order to grasp a cylinder at a non-imposed speed, and return to starting position
(Figure.1). Each subject received 2 markerizations by two different operators (A and B) and they carried
out 3 tests at a time T0 and at a time T1 (a week after) for each markerization [2]. The following distances
were considered in the analysis, between SCAL and 5 points: HR, CMJT, Met3, Dist3, Dist1.
RESULTS
Intraclass correlation coefficients were calculated to assess inter- and intra-operator reliability.
Operators did not obtain significantly different values. Test-retest reliability of the markers positions
measurements was good (test: 0,893, p<0.001; retest: 0,773, p<0.01) and intra-operator reliability was
excellent (A: 0.983, p<0.001; B: 0.993 p<0.001).
This system provides information on quality and amplitude of the movement. Hand movement analysis
by 3D kinematics has the potential to become an important clinical evaluation method and no
standardized protocol for clinical application has yet been developed [3]. A good intra- and interoperator reliability provides a reliable protocol in order to apply it in clinical practice to study possible
patterns in pathological conditions. The study is still ongoing and we expect that a larger sample size
will produce a statistical significance
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
Temporal and kinematic analyses of timed up and go test in chronic low back pain patients
No full textPurpose
To analyze temporal and kinematic parameters of chronic Low-Back Pain (cLBP) subjects compared to healthy subjects during Timed Up and Go Test (TUG) execution implemented with an Inertial Measurement Unit and to explore the correlations of those parameters with pain and disability.
Methods
Observational cross-sectional study. Thirty-one subjects with cLBP [(19 females - 61%), mean age 61 ± 19] were allocated to the case group, and 14 healthy [(10 females - 71%), mean age 62 ± 6] subjects to the control group. Instrumented TUG was administered to both groups. The Roland Morris Disability Questionnaire and Numerical Pain Rating Scale (NPRS) were also administered for disability and pain assessment in the case group.
Results
Mean TUG time to completion [12.2 ± 3.5 s for cLBP; 8.1 ± 0.9 s for healthy] and the most of sub-phases duration significantly differed between groups (p < 0.05). As for kinematic parameters, significant differences (p < 0.05) were mainly retrieved in acceleration components during the sit-to-stand and stand-to-sit phase, with the cLBP group showing lower accelerations. Significant correlation [from strong (ρ = 0.75 of time to completion) to moderate (ρ = 0.43 of sit-to-stand)] was observed between RMQD score and all temporal parameters and with most of the kinematic parameters. No correlation with NPRS score was found.
Conclusions
Instrumented TUG application into a cLBP population provides valuable information about movement behaviors with a deeper assessment of objective functional impairment and disability in respect of the classical stop-watch outcome of TUG, possibly allowing a better design of the rehabilitative intervention
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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