1,720,960 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
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
Lack of on-going adaptations in the soleus muscle activity during walking in patients affected by large-fiber neuropathy.
No full textThe aim of this study
was to investigate the contribution of feedback from large-diameter
sensory fibers to the adaptation of soleus muscle activity after small
ankle trajectory modifications during human walking. Small-amplitude
and slow-velocity ankle dorsiflexion enhancements and reductions
were applied during the stance phase of the gait cycle to mimic
the normal variability of the ankle trajectory during walking. Patients
with demyelination of large sensory fibers (Charcot-Marie-Tooth type
1A and antibodies to myelin-associated glycoprotein neuropathy) and
age-matched controls participated in this study. The patients had
absent light-touch sense in the toes and feet and absent quadriceps and
Achilles tendon reflexes, indicating functional loss of large sensory
fibers. Moreover, their soleus stretch reflex response consisted of a
single electromyographic (EMG) burst with delayed onset and longer
duration (P 0.01) than the short- and medium-latency reflex
responses observed in healthy subjects. In healthy subjects, the soleus
EMG gradually increased or decreased when the ankle dorsiflexion
was, respectively, enhanced or reduced. In the patients, the soleus
EMG increased during the dorsiflexion enhancements; however, the
velocity sensitivity of this response was decreased compared with the
healthy volunteers. When the dorsiflexion was reduced, the soleus
EMG was unchanged. These results indicate that the enhancement of
the soleus EMG is mainly sensitive to feedback from primary and
secondary muscle spindle afferents and that the reduction may be
mediated by feedback from the group Ib pathways. This study provides
evidence for the role of sensory feedback in the continuous
adaptation of the soleus activity during the stance phase of human
walking
Fetal head malposition and epidural analgesia in labor: a case-control study
No full textBackground: The fetal head malposition in labor leads to prolonged labor, cesarean delivery and increased perinatal morbidity. Epidural analgesia has been associated with fetal head malposition, but it remains unknown if this relation is causal. Objective: To compare the incidence of fetal malposition during labor and maternal/fetal outcomes, between women who received epidural analgesia with those who did not use the analgesic method. Study design: Case control study including 500 women with a single fetus in vertex position who gave birth at term at the Policlinic Hospital of Modena between May 2019 and July 2019. Two-hundred and fifty women belonged to the epidural analgesia (EA) group and 250 to the control group. Results: The rate of posterior occiput positions occurred 4 times more frequently in the EA group than in the control group (8.8% vs 2.2%, p =.004). Cesarean sections were significantly higher in the EA group (11.6% vs 1.6%, p <.0000) as well as the need for augmentation with oxytocin (20% vs 8%, p =.0001) compared to the control group, in which spontaneous delivery prevailed instead. Women with epidural had labors that lasted on average 7.0 h against the 3.30 h of controls (p <.0000). The length of 2nd stage of labor was 55 vs 30 min (p =.009), respectively. No differences in blood loss and Apgar score between groups. Early breastfeeding was significantly higher among controls (82% vs 92.8%, p =.0004). Conclusions: Women receiving epidural analgesia in labor have higher rate of fetal malposition, prolonged labors, and more cesarean sections than controls. However, further studies are required to confirm a causal association between EA and fetal head malposition
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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