1,720,997 research outputs found
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
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
Behavioural and Electrophysiological Investigations of Event Segmentation Using Ecological Stimuli
No full textOur daily lives are composed of many activities and experiences that form events. Segmenting
these continuous, ongoing experiences into smaller units is known as event segmentation.
Previously, ecological stimuli have been shown to increase subsequent memory at event
boundaries during active event segmentation tasks. Our study intends to determine whether
these effects were related to tasks (e.g., pressing the button to segment actively), or whether
they were related to a feature of stimulus that produces memory effects, as well as the brain's
ability to shape these events into memories. We conduct two experiments in this study:
behavioural and electroencephalogram (EEG) experiments, using ecologically valid stimuli to
observe event segmentation effects on memory. The first experiment consisted of 23
participants who watched a 30-minute POV video, followed by a memory recall task. This
experiment was consistent with our hypotheses and previous research in showing that stimuli
located on the boundary showed a higher degree of memory richness than stimuli located in
the middle. The effects of navigational turns at event boundaries on memory richness was
assessed, and significant differences were observed between turn and non-turn events. The
second experiment involved 20 participants who watched the same video divided into smaller
ten second segments while their EEG was recorded, followed by a memory recall test.
Behavioural components demonstrated nonsignificant results for memory richness during
boundary events and navigational turns at event boundaries. When theta power was compared
between event boundary and middle conditions using repeated measures ANOVA, no
significant interaction was found. A negative relationship was also observed between
subsequent memory and mean theta as shown by regression analyses. Experimental 2
contradicted previous experiments and literature as videos were divided into ten second with
no visual context, and the EEG results contradict literature due to a reduction in frontal
midline theta (FMT) at event boundaries in episodic memories. This research may have had
implications that affected our results, but it still provides us with the opportunity to continue
our research and explore more into the area of event segmentation and memory in the future
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
Scene Construction or Relational Processing: Investigating the function of the hippocampus during the simulation of novel future events
No full textMemory and imagination are critical cognitive processes, essential to every facet of daily human life. This thesis will provide an overview of research demonstrating that memory and imagination are supported by a common cognitive mechanism. In addition, I will explore research that has implicated the hippocampus as an essential structure to the ability to recall the past and to imagine the future. This thesis will then introduce two theoretical perspectives that propose contrasting views on the role of the hippocampus in memory and imagination: (1) the Scene Construction Theory and (2) the Constructive Episodic Simulation Hypothesis. The scene construction theory proposes that the main role of the hippocampus is to construct scenes, emphasizing the importance of space to imagination. Conversely, the constructive episodic simulation hypothesis proposes that the primary role of hippocampus is to retrieve details from memory and flexibly combine them into past or future events. This thesis will also outline the gaps in the literature, which largely refer to the lack of consensus on the centrality of space to the hippocampus. In the current study, participants engaged in a future simulation task while undergoing an fMRI scan. For each simulation trial, participants were cued with three details-a person, place, and a verb. Importantly, the three detail cues were presented sequentially, with half of the trials starting with a place detail (place-first condition) and the other half with a person detail (person-first condition). Analyses of the hippocampus found a main effect of condition in the left hippocampal body, with significantly greater activation in the place-first condition compared to the person-first condition. However, there was a significant increase from baseline in the person-first condition, indicating that the hippocampus responds to spatial and non-spatial details. Task PLS results found that regions associated with facial processing were activated by the simulation of a person in the person-first condition. In contrast, regions associated with spatial processing were more activated during the simulation of places, regardless of the condition they were presented in. Finally, this thesis discusses the current study’s findings in relation to the scene construction theory and the constructive episodic simulation hypothesis, as well as in the context of the existing literature
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