1,720,964 research outputs found
MODELING AND IMPLEMENTING A SIGNAL PERSISTENCE MANAGER FOR SHARED BIOSIGNAL STORAGE AND PROCESSING
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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
Multivariate pattern decoding of FMRI signals in disorders of consciousness
No full textLAUREA MAGISTRALEEvaluation of patients with disorder of consciousness (DOC) is conducted prevalently with bedside assessment. However, this approach has been known to produce misdiagnosis. Recent studies propose neuroimaging as a new diagnostic tool, potentially leading to the implementation of a more robust methodology to classify the patients depending on their brain activations, as minimally conscious status (MCS) or persistent vegetative state (PVS).
A hierarchical protocol has been suggested for functional neuroimaging studies (Owen et al., 2005), progressing sequentially from the simplest form of brain processing to more complex cognitive functions. It was also demonstrated that pattern classification of brain signals in different behavioral tasks could enable DOC patients to use a binary fMRI-BCI (Boly et al., 2007).
In light of the above, our study aimed to take this approach to a next step, by trying to assess new methodologies to classify the patients in the different clinical DOC categories, as minimally conscious status (MCS) or persistent vegetative state (PVS), by using functional Magnetic Resonance Imaging (fMRI) in a battery of experiments on intentional control, language competence, working memory, emotions and pain sensation.
During this project, the MANAS 4 toolbox was implemented based on a revised version of a previously developed toolbox (Rana et al., 2013) for fMRI data classification. The toolbox used multivariate Support Vector Machine (SVM), and conducted a sub-study to assess the performances of different preprocessing steps (Tanabe et al., 2002) and feature selection algorithms, namely, Fisher Scoring (Gu, Li, & Han, 2012a), Fisher Scoring with Searchlight and Effect Mapping (Lee et al., 2010) using a motor task fMRI dataset (Rana et al., 2013). The toolbox allows a high degree of customization through configuration files, letting the researcher to focus on the analysis of the data, rather than the building of the processing.
In the subsequent stages of this project, the MANAS 4 toolbox was used to analyze activations in a Classical Conditioning Paradigm with Emotional Sounds, to evaluate the possibility of a future implementation of an fMRI-BCI for communication in Alzheimer patients, by showing an overall good prediction of the conditioned stimuli
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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