1,721,107 research outputs found
Dutch general practitioners in a time of change. Studies on out-of-hours and GP hosptital care
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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
Vascular factors in dementia and apathy
Full text linkThe number of individuals suffering from dementia is expected to rise significantly in the future. Because so far no curative treatment exists, prevention remains paramount. A large body of evidence points to the direction of an important role of vascular risk factors in the aetiology of dementia and it has been hypothesized that these factors could represent an important target for dementia prevention in older individuals. This thesis presents the findings from the Prevention of Dementia by Intensive Vascular Care study, a large cluster-randomised controlled trial that was executed in primary care to assess whether nurse-led intensive vascular care compared to usual care can prevent dementia and all-cause disability in community-dwelling older adults. Although the intervention did not reduce the incidence of all-cause dementia, subgroup analyses suggested beneficial effects in individuals who were adherent to the intervention, especially those with untreated baseline hypertension. Vascular factors have also been assumed to contribute to the aetiology of apathy symptoms in old age. The second aim of this thesis was to assess whether symptoms of apathy and depression are differentially associated with future cardiovascular disease and stroke in community-dwelling older individuals and to assess potential mechanisms underlying these relationships. Symptoms of apathy, but not of depression, were associated with an increased cardiovascular disease risk. Smoking, diabetes mellitus, and physical inactivity appeared to partly mediate this association. Specifically apathy symptoms were associated with concurrent low-grade inflammation. These findings suggest that apathy symptoms may be both a risk factor and marker for future cardiovascular disease
Self-referrals to the A&E department during out-of-hours: patients' motives and characteristics
No full textOBJECTIVE: To determine self-referrals' motives to visit the accident & emergency departments (AED) and to compare their characteristics to patients contacting the GP cooperative. METHODS: Postal questionnaires were send to AED self-referrals and logistic regression analysis was used to contrast self-referrals to patients contacting the GP cooperative. RESULTS: For a study population of 62,000, during 4 months, 5547 contacts were registered with the GP cooperative, along with 808 AED contacts, 344 of whom (43%) were self-referrals. Main reasons to visit the AED were the perceived need for diagnostic facilities and the conviction that the hospital specialist was best qualified to handle the problem. Dissatisfaction with the GP cooperative among respondents was high. Self-referral to the AED was positively associated with injury, age between 15 and 64, musculoskeletal, cardiovascular and respiratory problems, and distance to the GP centre. CONCLUSION: Self-referrals emerge as patients with a strong preference for the AED, mainly based on assumptions on quality of care and necessary facilities. PRACTICE IMPLICATIONS: While self-referrals may, in part, make motivated and appropriate choices to visit the AED, new integrated care models should be studied that can adequately deflect those who are eligible for GP car
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
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