1,721,040 research outputs found
Anti-inflammatory therapy and cerebrospinal fluid diagnosis in Alzheimer's disease.
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82007.pdf (Publisher’s version ) (Open Access)Radboud Universiteit Nijmegen, 21 september 2010Promotor : Kremer, H.P.H. Co-promotores : Jansen, R.W.M.M., Verbeek, M.M.167 p
Postprandial and orthostatic hypotension: implications for nursing care in the elderly
No full textItem does not contain fulltextKUN, 29 oktober 2003Promotores : Hoefnagels, W.H.L., Frederiks, C.M.A., Achterberg, T. van Co-promotor : Jansen, R.W.M.M
Cerebral hemodynamics in aging: the interplay between blood pressure, cerebral perfusion, and dementia.
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69883.pdf (Publisher’s version ) (Open Access)Advances in measurement techniques have made it possible to study dynamic changes in brain blood flow. Transcranial Doppler ultrasonography measures changes in cerebral blood flow-velocity in the larger cerebral arteries (e.g. the middle cerebral artery). Near infrared spectroscopy records changes in brain cortical tissue concentrations of hemoglobin. These techniques are non-invasive, and can be performed with the subject in supine, sitting or standing position. Together with photoplethysmography, which measures arterial blood pressure at the finger, these methods provide detailed information on beat-to-beat changes in cerebral hemodynamics. In this thesis, these techniques have been further explored, with specific attention for their potential use in elderly subjects. First, we have considered that measurements of cerebral perfusion, complimenting measurements of blood pressure, will provide valuable insight in disorders of blood pressure regulation. Second, we have proposed that measurements of blood pressure, cerebral blood flow, and their interaction, are important in dementia research.RU Radboud Universiteit Nijmegen, 25 november 2008Promotores : Olde Rikkert, M.G.M., Levine, B.D. Co-promotores : Zhang, R., Jansen, R.W.M.M.237 p
Meals and blood pressure in the elderly: experimental studies on postprandial blood pressure reduction
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Is bij ouderen (65+) met atriumfibrillatie behandeling met anticoagulantia geindiceerd?
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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
Het gebruik van cardiovasculaire geneesmiddelen bij ouderen
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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
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