1,721,126 research outputs found
Pain perception: Power of placebo effect and crossed-hands analgesia
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200803.pdf (Publisher’s version ) (Open Access)Radboud University, 05 februari 2019Promotor : Luijtelaar, E.L.J.M. van Co-promotores : Babel, P., Rijn, C.M. van, Oosterman, J.M.239 p
The role of group I metabotropic glutamate receptors in absence epilepsy
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157139.pdf (Publisher’s version ) (Open Access)RU Radboud Universiteit, 08 juni 2016Promotores : Luijtelaar, E.L.J.M. van, Nicoletti, F. Co-promotores : Rijn, C.M. van, Ngomba, R.T.229 p
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
GABAergic drugs in WAG/Rij rats. Mechanisms underlying spike and wave discharges
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27383.pdf (Publisher’s version ) (Open Access)
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56954.pdf (Publisher’s version ) (Open Access)It was aimed to further evaluate the role of the GABAergic neurotransmission system in the mechanisms underlying absence epilepsy. More specifically, the aim of this thesis is to investigate whether GABAergic neurotransmission is either quantitatively or qualitatively (or both) involved in the mechanisms underlying SWDs and whether this involvement is specifically determined by GABAA or GABAB mediated neurotransmission. To summarise, manipulation of different types of GABA receptors was shown to differentially affect the SWD activity. Systemic administration of GABA agonistic drugs resulted in an enhancement of SWD activity, with the exception of diazepam and loreclezole (discussed in 8.1.3.). It has been predicted that (relatively) enhancing GABAB-related neurotransmission in TC cells should slow down the peak frequency of SWDs (Destexhe, 1999; Destexhe and Sejnowski, 2003), which was confirmed in this thesis (chapter 4). Also, it was shown that hazard rate analysis can be a useful tool for hypothesising about the SWD starting and stopping mechanisms. Moreover, it was shown that this type of analysis might reveal more information on these mechanisms than the standard analysis of averages (of incidence and duration). In general, stimulation of GABAA receptors was shown to increase the probability of the generation of SWDs and to decrease the probability of the cessation of SWDs. Stimulation of GABAB receptors was also shown to increase the probability of SWD generation. Moreover, GABAB receptor activation not only decreased the probability of the stopping of a SWD, but also changed the course of this probability as the SWD lasts. Possible biological mechanisms responsible for these effects were discussed, and some possible types of drugs for the treatment of absence epilepsy were proposed.RU Radboud Universiteit Nijmegen, 07 februari 2006Promotor : Coenen, A.M.L. Co-promotor : Rijn, C.M. van141 p
Probing attentional biases: The presence and presentation of individual attentional biases in relation to salient stimuli
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203910.pdf (Publisher’s version ) (Open Access)Radboud University, 03 juni 2019Promotor : Kessels, R.P.C. Co-promotores : Jongsma, M.L.A., Oosterman, J.M., Rijn, C.M. van214 p
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
Mind games: The effects of diazepam on Evoked Potentials. Part A: passive paradigms; Part B: EEG-EP interrelations
No full textAppropriate 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
Dispelling 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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