47 research outputs found
On Imbalance of Impulse Control and Sensation Seeking and Adolescent Risk
Heterogeneity in development of imbalance between impulse control and sensation seeking has not been studied until now.
The present study scrutinized this heterogeneity and the link between imbalance and adolescent risk. Seven-wave data of
7,558 youth (50.71% males; age range from 12/13 until 24/25) were used. Three developmental trajectories were identified.
The first trajectory, “sensation seeking to balanced sensation seeking”, included participants with a higher level of sensation
seeking than impulse control across all ages. The second trajectory, “moderate dominant control”, included participants
showing moderate and increasing impulse control relative to sensation seeking across all ages. The third trajectory, “strong
late dominant control”, included participants showing the highest level of impulse control which was about as strong as
sensation seeking from early to middle adolescence and became substantially stronger from late adolescence to early
adulthood. Although the systematic increase of impulse control in all subgroups is in line with both models, neither of these
combined trajectories of control and sensation seeking was predicted by the Dual Systems Model or the Maturational
Imbalance Model. Consistent with both models the “sensation seeking to balanced sensation seeking” trajectory showed the
highest level of substance use. It can be concluded that, even though both theories adequately predict the link between
imbalance and risk,
Origin and Evolution of Saturn's Ring System
The origin and long-term evolution of Saturn's rings is still an unsolved
problem in modern planetary science. In this chapter we review the current
state of our knowledge on this long-standing question for the main rings (A,
Cassini Division, B, C), the F Ring, and the diffuse rings (E and G). During
the Voyager era, models of evolutionary processes affecting the rings on long
time scales (erosion, viscous spreading, accretion, ballistic transport, etc.)
had suggested that Saturn's rings are not older than 100 My. In addition,
Saturn's large system of diffuse rings has been thought to be the result of
material loss from one or more of Saturn's satellites. In the Cassini era, high
spatial and spectral resolution data have allowed progress to be made on some
of these questions. Discoveries such as the ''propellers'' in the A ring, the
shape of ring-embedded moonlets, the clumps in the F Ring, and Enceladus' plume
provide new constraints on evolutionary processes in Saturn's rings. At the
same time, advances in numerical simulations over the last 20 years have opened
the way to realistic models of the rings's fine scale structure, and progress
in our understanding of the formation of the Solar System provides a
better-defined historical context in which to understand ring formation. All
these elements have important implications for the origin and long-term
evolution of Saturn's rings. They strengthen the idea that Saturn's rings are
very dynamical and rapidly evolving, while new arguments suggest that the rings
could be older than previously believed, provided that they are regularly
renewed. Key evolutionary processes, timescales and possible scenarios for the
rings's origin are reviewed in the light of tComment: Chapter 17 of the book ''Saturn After Cassini-Huygens'' Saturn from
Cassini-Huygens, Dougherty, M.K.; Esposito, L.W.; Krimigis, S.M. (Ed.) (2009)
537-57
Genetic insights into resting heart rate and its role in cardiovascular disease.
Resting heart rate is associated with cardiovascular diseases and mortality in observational and Mendelian randomization studies. The aims of this study are to extend the number of resting heart rate associated genetic variants and to obtain further insights in resting heart rate biology and its clinical consequences. A genome-wide meta-analysis of 100 studies in up to 835,465 individuals reveals 493 independent genetic variants in 352 loci, including 68 genetic variants outside previously identified resting heart rate associated loci. We prioritize 670 genes and in silico annotations point to their enrichment in cardiomyocytes and provide insights in their ECG signature. Two-sample Mendelian randomization analyses indicate that higher genetically predicted resting heart rate increases risk of dilated cardiomyopathy, but decreases risk of developing atrial fibrillation, ischemic stroke, and cardio-embolic stroke. We do not find evidence for a linear or non-linear genetic association between resting heart rate and all-cause mortality in contrast to our previous Mendelian randomization study. Systematic alteration of key differences between the current and previous Mendelian randomization study indicates that the most likely cause of the discrepancy between these studies arises from false positive findings in previous one-sample MR analyses caused by weak-instrument bias at lower P-value thresholds. The results extend our understanding of resting heart rate biology and give additional insights in its role in cardiovascular disease development
J. de Jonge,Geheime Gebaren Deventer:Van Tricht ,2007 978-90-77822-22-7
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Bimodal bilingual cross-language interaction: Pieces of the puzzle
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Visual word recognition in bilingual deaf children
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73370.pdf (publisher's version ) (Open Access)RU Radboud Universiteit Nijmegen, 24 juni 2008Promotores : Knoors, H.E.T., Verhoeven, L.T.W.200 p
1+1=3; de voordelen van een bimodaal tweetalig aanbod aan dove kinderen
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The prosodic correlates of sentences in signed languages and their relation to language technology: a literature review and suggestions for new types of studies
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Sectie Gebarentaal en Gesture. Effects of bimodal input
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