9,859 research outputs found
The Monotonicity Puzzle. An Experimental Investigation of Incentives Structures
Nonāmonotone incentive structures, which ā according to theory ā are able to induce optimal behavior, are often regarded as empirically less relevant for labor relationships. Scientific attention is (therefore) confined to monotone if not linear contracts. This paper reports on experimental tests comparing nonāmonotone vs. monotone contracts in a simple dynamic agency model. The results demonstrate that selecting the nonāmonotone contract over of the monotone one is not only optimal from a theoretical point of view, but also remains preferable given the agentsā observed behavior. However, roughly 50 per cent of the principals prefer the monotone contract.experimental agency, nonāmonotone contracts
Natural Hazards and the Normative Significance of Expectations in Protecting Alpine Communities
Deep Structured Features for Semantic Segmentation
We propose a highly structured neural network architecture for semantic
segmentation with an extremely small model size, suitable for low-power
embedded and mobile platforms. Specifically, our architecture combines i) a
Haar wavelet-based tree-like convolutional neural network (CNN), ii) a random
layer realizing a radial basis function kernel approximation, and iii) a linear
classifier. While stages i) and ii) are completely pre-specified, only the
linear classifier is learned from data. We apply the proposed architecture to
outdoor scene and aerial image semantic segmentation and show that the accuracy
of our architecture is competitive with conventional pixel classification CNNs.
Furthermore, we demonstrate that the proposed architecture is data efficient in
the sense of matching the accuracy of pixel classification CNNs when trained on
a much smaller data set.Comment: EUSIPCO 2017, 5 pages, 2 figure
Three neutrons from Lattice QCD
We present a study on ab-initio calculations of three-neutron correlators
from Lattice QCD. We extend the method of baryon blocks to systems of three
spacially displaced baryons. This allows the measurement of three-neutron
-wave correlators with total spin and . In addition, we use
automatic code generation that has high flexibility and allows for easy
inclusion of additional channels in the future while optimizing the evaluation
of contractions. Our measurements were performed on a newly generated Clover-Wilson gauge field ensemble with . We present preliminary results of our calculations of one
pion and nucleon as well as two nucleon () and three neutron ()
correlators.Comment: Proceedings from Lattice2018, 7 pages, 4 figure
Carbon nanotube chirality determines properties of encapsulated linear carbon chain
Long linear carbon chains encapsulated inside carbon nanotubes are a very
close realization of carbyne, the truly one-dimensional allotrope of carbon.
Here we study individual pairs of double-walled carbon nanotubes and
encapsulated linear carbon chains by tip-enhanced Raman scattering. We observe
that the radial breathing mode of the inner nanotube correlates with the
frequency of the carbon chain's Raman mode, revealing that the nanotube
chirality determines the vibronic and electronic properties of the encapsulated
carbon chain. We provide the missing link that connects the properties of the
encapsulated long linear carbon chain with the structure of the host nanotube.Comment: keywords: linear carbon chains; carbyne; carbon nanotubes;
tip-enhanced Raman scattering; TERS; Significant changes compared to first
version of the manuscript. Current version includes Supporting Informatio
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