1,720,960 research outputs found
Un caso clinico di diagnosi differenziale incerta tra malattia di Alzheimer e demenza a corpi di Lewy
No full textRAPPORTI TRA SISTEMA SEMANTICO E SISTEMA DI DESCRIZIONE STRUTTURALE: ASPETTI TEORICI, COSTRUZIONE DI UN NUOVO STRUMENTO E STUDIO DI PAZIENTI CON LESIONI CEREBRALI EMISFERICHE FOCALI
Full text linkThe Structural Description System stores pre-semantic visual information about the shape of objects. During visual perception, the actually perceived shape should activate the SDS before accessing the Semantic System. The standard shape of known objects results from the assembly of distinct parts, each of a given size with respect to the other parts. Also the size of the whole object in comparison to other objects may be variable, but only within a definite range.
The aim of this study is to assess the knowledge of shape, features- and whole object’s dimensions, checking the influence of demographic variables. In addiction, we wanted to analyse the relationship between the knowledge of object’s shape, of whole-size and of subparts-size.
To this aim we created a new neuropsychological battery which consists of 4 test based on 10 tools and 10 animals pictures from the Snodgrass set. In the Feature Dimension Assessment (FDA), the size of one feature of the picture was progressively reduced or amplified, so that only 50% of the resulting shapes was still acceptable. In the Object Dimension Assessment (ODA), two pictures were presented on the same sheet of paper, and the relative size of one of two objects was progressively reduced or amplified, so that only in 50% of the cases the relative size of the stimuli was acceptable. In addition, the battery included a picture reality judgment (FINOFI), based on real and chimerical pictures of animals and tools, and a Semantic Questionnaire (SQ) with verbal probes about perceptual and functional aspects of animals and tools.
The battery was given to 100 Italian healthy participants. Each test was standardised with the Equivalent Score procedure by calculating the contribution of demographic variables. Normal control subjects’ performances were correlated to one another with Pearson’s linear correlation.
The battery was also administered to 24 right brain-damaged patients and to 11 left brain-damaged patients. We used Cohen’s weighted k and McNemar test to assess the agreement between different tests in right brain-damaged patients. Right occipital patients were then picked out to verify their performance on each of the 4 tests at issue.
Results show that FDA and FINOFI are apparently tapping similar aspects of the Structural Description System. ODA seems neither related to Semantic System, nor to the Structural Description System
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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