1,720,959 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
The "Time and Change" test: An appropriate method to detect cognitive decline in the elderly
No full textThe Time and Change (T&C) test is an easy and time-saving test validated for the detection of dementia. Our aim was to determine how geriatric features like depression, disability, and comorbidity are able to influence the result of the T&C and, consequently, to decide whether it could be a reliable screening test for cognitive impairment in the elderly. A total of 220 participants (mean age = 75.8 +/- 9.6 years, 63.7% females) underwent the T&C, Mini-Mental State Examination, and the Clock Drawing Test; Activities of Daily Living, Instrumental Activities of Daily Living, comorbidity, and depression were also evaluated. Time and Change-positive participants were older, had poorer cognitive tests, and had higher levels of disability and comorbidity than participants testing negative. Multivariate analysis showed that cognitive impairment and comorbidity were the only features that influenced the T&C, regardless of age, education, disability, and depression. We conclude that the T&C should be implemented in primary care because it quickly identifies elderly patients with cognitive impairment who need a more accurate evaluation
Biological, psychological and clinical markers of caregiver's stress in impaired elderly with dementia and age-related disease.
No full textStress refers to the experience, produced through a person-environment transaction, that results in psychological or physiological distress. Everyday stress or hassles have a larger impact on health, in this frame caring for elderly disabled and/or demented persons have been shown to be a chronic role strain. The concept of stress and strain encompasses different levels of individual functioning (physiological, cognitive, affective, social). We studied whether 3 different distressing conditions show (i) different profiles in biological, psychological and clinical indices of stress, and (ii) different response to temporary environmental manipulation. A sample of 29 caregivers of elderly subjects temporarily institutionalized for (i) respite program, (ii) behavioral psychological symptoms of dementia (BPSD) in dementia-control and, (iii) a rehabilitation program after hip fracture, was assessed with clinical, psychological and biological measures. The BPSD appear to be the most powerful distressing factor, both at the beginning and at the end of the study. On the whole, to an improvement of patient's clinical picture, it corresponds only a partial improvement in stress indices of the caregiver. The slope of biological indices don not parallel those of psychological ones. Among psychometric indices, the pattern of recovery differentiate affective and cognitive domains. The "respite" care condition seems to be the less effective in reducing stress in the caregivers. The stress process should be considered in its different domains to allow a tailored interventio
Lo stress nel caregiver dell'anziano non autosufficiente: indici psicometrici e biologici
No full textDispelling 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
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