6,614 research outputs found
The functional subdivision of the visual brain : Is there a real illusion effect on action? A multi-lab replication study
Acknowledgements We thank Brian Roberts and Mike Harris for responding to our questions regarding their paper; Zoltan Dienes for advice on Bayes factors; Denise Fischer, Melanie Römer, Ioana Stanciu, Aleksandra Romanczuk, Stefano Uccelli, Nuria Martos SĂĄnchez, and Rosa MarĂa Beño Ruiz de la Sierra for help collecting data; Eva Viviani for managing data collection in Parma. We thank Maurizio Gentilucci for letting us use his lab, and the Centro Intradipartimentale Mente e Cervello (CIMeC), University of Trento, and especially Francesco Pavani for lending us his motion tracking equipment. We thank Rachel Foster for proofreading. KKK was supported by a Ph.D. scholarship as part of a grant to VHF within the International Graduate Research Training Group on Cross-Modal Interaction in Natural and Artificial Cognitive Systems (CINACS; DFG IKG-1247) and TS by a grant (DFG â SCHE 735/3-1); both from the German Research Council.Peer reviewedPostprin
Eg versus x relation from photoluminescence and electron microprobe investigations in p-type Hg1âxCdxTe (0.35 =< x =< 0.7)
Combined photoluminescence (at 10 T 300 K) and electron microprobe investigations have been carried out with HgCdTe samples grown from the melt or from solution. By exciting the samples through metallic masks with 200 ÎŒm diameter holes fixed with respect to the sample care was taken to pick-up both characteristic X-ray radiation as well as the photoluminescence from the same sample area. The Eg versus x relation determined in this way at T = 30 K has been compared with data from the interband absorption edge by other authors
3-Dimensional Core-Collapse
In this paper, we present the results of 3-dimensional collapse simulations
of rotating stars for a range of stellar progenitors. We find that for the
fastest spinning stars, rotation does indeed modify the convection above the
proto-neutron star, but it is not fast enough to cause core fragmentation.
Similarly, although strong magnetic fields can be produced once the
proto-neutron star cools and contracts, the proto-neutron star is not spinning
fast enough to generate strong magnetic fields quickly after collapse and, for
our simulations, magnetic fields will not dominate the supernova explosion
mechanism. Even so, the resulting pulsars for our fastest rotating models may
emit enough energy to dominate the total explosion energy of the supernova.
However, more recent stellar models predict rotation rates that are much too
slow to affect the explosion, but these models are not sophisticated enough to
determine whether the most recent, or past, stellar rotation rates are most
likely. Thus, we must rely upon observational constraints to determine the true
rotation rates of stellar cores just before collapse. We conclude with a
discussion of the possible constraints on stellar rotation which we can derive
from core-collapse supernovae.Comment: 34 pages (5 of 17 figures missing), For full paper, goto
http://qso.lanl.gov/~clf/papers/rot.ps.gz accepted by Ap
The Influence Of Neutron Capture Rates On The Rare Earth Region Of The r-Process Abundance Pattern
We study the sensitivity of the r-process abundance pattern to neutron
capture rates along the rare earth region (A~150 to A~180). We introduce the
concepts of large nuclear flow and flow saturation which determine the neutron
capture rates that are influential in setting the rare earth abundances. We
illustrate the value of the two concepts by considering high entropy conditions
favorable for rare earth peak production and identifying important neutron
capture rates among the rare earth isotopes. We also show how these rates
influence nuclear flow and specific sections of the abundance pattern.Comment: 14 pages, 7 figures, submitted to PR
A Method for Calculating the Subsonic Steady-state Loading on an Airplane with a Wing of Arbitrary Plan Form and Stiffness
Electron rescattering at metal nanotips induced by ultrashort laser pulses
We report on the first investigation of plateau and cut-off structures in
photoelectron spectra from nano-scale metal tips interacting with few-cycle
near-infrared laser pulses. These hallmarks of electron rescattering,
well-known from atom-laser interaction in the strong-field regime, appear at
remarkably low laser intensities with nominal Keldysh parameters of the order
of . Quantum and quasi-classical simulations reveal that a large
field enhancement near the tip and the increased backscattering probability at
a solid-state target play a key role. Plateau electrons are by an order of
magnitude more abundant than in comparable atomic spectra, reflecting the high
density of target atoms at the surface. The position of the cut-off serves as
an in-situ probe for the locally enhanced electric field at the tip apex
Object-based attentional facilitation and inhibition are neuropsychologically dissociated
Salient peripheral cues produce a transient shift of attention which is superseded by a sustained inhibitory effect. Cueing part of an object produces an inhibitory cueing effect (ICE) that spreads throughout the object. In dynamic scenes the ICE stays with objects as they move. We examined object-centred attentional facilitation and inhibition in a patient with visual form agnosia. There was no evidence of object-centred attentional facilitation. In contrast, object-centred ICE was observed in 3 out of 4 tasks. These inhibitory effects were strongest where cues to objecthood were highly salient. These data are evidence of a neuropsychological dissociation between the facilitatory and inhibitory effects of attentional cueing. From a theoretical perspective the findings suggest that âgrouped arraysâ are sufficient for object-based inhibition, but insufficient to generate object-centred attentional facilitation
'Parasitic invasions' or sources of good governance: constraining foreign competition in Hong Kong banking, 1956-81
This paper investigates the operation and impact of the moratorium on new banking licences imposed in Hong Kong in 1965 and the claims that foreign banks destabilised the banking system and drained resources from the colony. First it examines foreign banks' attempts to circumvent the moratorium through claims of special circumstances and buying interests in local banks, and secondly it examines the efforts of incumbents to extend barriers to non-bank financial institutions and to branches of foreign banks. The general conclusions are that while the moratorium was aimed at increasing the stability of the banking system, it had the effect of decreasing the regulatory breadth of the government, and reducing incentives for mergers and acquisitions that might have improved governance
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