1,720,958 research outputs found
Effects of a noise-induced audiometric notch on tinnitus distress
No full textNoise-induced hearing loss (NIHL) is a widely known occupational health problem. Two initial characteristics of NIHL are audiometric notch and tinnitus. Many studies focus on the relationship between NIHL and either audiometric notch or tinnitus, however an investigation on the link between audiometric notch and tinnitus is still missing. The objective of the current study is to evaluate tinnitus distress in individuals with noise-induced audiometric notch. A group of 11 individuals with a history of noise exposure and sensorineural hearing loss were included. Tinnitus mapping, including location, loudness, pitch and minimal masking level; residual inhibition (RI), tinnitus handicap inventory (THI), and Mini-Tinnitus Questionnaire (TQ 12-T) were performed. Audiometric notch was observed at 6 kHz, being in line with previous studies, in 46% of the participants. However, a significant number of participants (54%) had audiometric notch at 4 kHz. According to THI and TQ 12-T results, noise-induced audiometric notch was associated with moderate tinnitus distress. Additionally, tinnitus pitch was closely correlated to the notch frequency and easily inhibited by the sound
Vestibulo-Spinal reflex tests to determine unilateral vestibular loss
No full textObjective: the purpose of this study was to investigate subjective vestibulo-spinal reflex test sensitivity in subjects with unilateral vestibular loss. Method: forty subjects diagnosed with UVL within 7 days of onset and 30 subjects without dizziness/balance disorder complaints were included in the study as the unilateral vestibular loss and control groups (70 subjects aged 18–60 years [mean: 42.95 ± 10.82]). Bithermal caloric test, Fukuda, Babinski Weil, tandem walking, and past pointing tests were performed. The subjective VSR tests’ sensitivities were compared among the various methods. Results: the Fukuda test was determined to have the highest sensitivity value (65%; kappa coefficient: 0.352). The sensitivity values of the other tests, in descending order, are: Babinski Weil (55%, Kappa coefficient: 0.274), tandem walking (10%, Kappa coefficient: 0.022), and past pointing (2.5%, Kappa coefficient: −0.014). A positive moderate correlation was obtained between canal paresis asymmetry and Fukuda deviation degree (p = 0.009, r = 0.407). There was no correlation between Babinski Weil (p = 0.619), tandem walking (p = 0.538), and past pointing test results and canal paresis asymmetry (p > 0.05). Conclusions: fukuda and Babinski Weil tests can be used under conditions where all subjective tests are not performed because of limited time. However, these tests must be used alongside objective vestibular test batteries owing to their limited specificity and sensitivity
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
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
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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