375 research outputs found
Higher bottom and bottom-strange mesons
Motivated by the recent observation of the orbital excitation by
CDF collaboration, we have performed a systematical study of the mass spectrum
and strong decay patterns of the higher and mesons. Hopefully the
present investigation may provide valuable clues to further experimental
exploration of these intriguing excited heavy mesons.Comment: 13 pages, 11 figures, 10 tables. More discussions and references
added. Accepted by Phys. Rev.
Charged bottomonium-like states and and the decay
Inspired by the newly observed two charged bottomonium-like states, we
consider the possible contribution from the intermediate and
states to the decay
process, which naturally explains Belle's previous observation of the anomalous
production near the peak of at GeV [K.F. Chen {\it et al}. (Belle Collaboration), Phys. Rev. Lett.
{\bf 100}, 112001 (2008)]. The resulting and distributions agree with Belle's
measurement after inclusion of these states. This formalism also
reproduces the Belle observation of the double-peak structure and its
reflection in invariant mass spectrum of decay.Comment: 5 pages, 5 figures, 4 tables. More contents and discussions adde
1D to 3D Dimensional Crossover in the Superconducting Transition of the Quasi-One-Dimensional Carbide Superconductor Sc3CoC4
The transition metal carbide superconductor Sc3CoC4 may represent a new
benchmark system of quasi-1D superconducting behavior. We investigate the
superconducting transition of a high-quality single crystalline sample by
electrical transport experiments. Our data show that the superconductor goes
through a complex dimensional crossover below the onset Tc of 4.5 K. First, a
quasi-1D fluctuating superconducting state with finite resistance forms in the
CoC4 ribbons which are embedded in a Sc matrix in this material. At lower
temperature, the transversal Josephson or proximity coupling of neighboring
ribbons establishes a 3D bulk superconducting state. This dimensional crossover
is very similar to Tl2Mo6Se6, which for a long time has been regarded as the
most appropriate model system of a quasi-1D superconductor. Sc3CoC4 appears to
be even more in the 1D limit than Tl2Mo6Se6
Estimator Meets Equilibrium Perspective: A Rectified Straight Through Estimator for Binary Neural Networks Training
Binarization of neural networks is a dominant paradigm in neural networks
compression. The pioneering work BinaryConnect uses Straight Through Estimator
(STE) to mimic the gradients of the sign function, but it also causes the
crucial inconsistency problem. Most of the previous methods design different
estimators instead of STE to mitigate it. However, they ignore the fact that
when reducing the estimating error, the gradient stability will decrease
concomitantly. These highly divergent gradients will harm the model training
and increase the risk of gradient vanishing and gradient exploding. To fully
take the gradient stability into consideration, we present a new perspective to
the BNNs training, regarding it as the equilibrium between the estimating error
and the gradient stability. In this view, we firstly design two indicators to
quantitatively demonstrate the equilibrium phenomenon. In addition, in order to
balance the estimating error and the gradient stability well, we revise the
original straight through estimator and propose a power function based
estimator, Rectified Straight Through Estimator (ReSTE for short). Comparing to
other estimators, ReSTE is rational and capable of flexibly balancing the
estimating error with the gradient stability. Extensive experiments on CIFAR-10
and ImageNet datasets show that ReSTE has excellent performance and surpasses
the state-of-the-art methods without any auxiliary modules or losses.Comment: 10 pages, 6 figures. Accepted in ICCV 202
Career Goal Setting and Goal Pursuit in Young Adults: The Role of Financial Distress
Informed by goal-setting/self-regulatory theories, we tested the mediating role of career-related effort (i.e., goal striving) in the relationships between career-related indecision (i.e., goal ambiguity) and career-related stress (i.e., affect) and perceived employability (i.e., career-related attitude) and examined the effect of financial distress as a moderator in these direct and indirect relationships. Using a sample of 202 young adults (Mage ¼ 19.8 years, 81.7% female), we found career indecision was related negatively to effort and perceived employability and positively to stress, with effort mediating between indecision and both stress and perceived employability. However, financial distress influenced these relationships. The associations between career indecision and effort and perceived employability were more negative and the associations between career indecision and stress were more positive when financial distress was higher. The study contributes by identifying how financial distress affects the relationships between career indecision, effort, and other career variables
Career Goal Setting and Goal Pursuit in Young Adults: The Role of Financial Distress
Informed by goal-setting/self-regulatory theories, we tested the mediating role of career-related effort (i.e., goal striving) in the relationships between career-related indecision (i.e., goal ambiguity) and career-related stress (i.e., affect) and perceived employability (i.e., career-related attitude) and examined the effect of financial distress as a moderator in these direct and indirect relationships. Using a sample of 202 young adults (Mage 1⁄4 19.8 years, 81.7% female), we found career indecision was related negatively to effort and perceived employability and positively to stress, with effort mediating between indecision and both stress and perceived employability. However, financial distress influenced these relationships. The associations between career indecision and effort and perceived employability were more negative and the associations between career indecision and stress were more positive when financial distress was higher. The study contributes by identifying how financial distress affects the relationships between career indecision, effort, and other career variables.
Keywords
career goal setting, career self-regulation, career effort, career indecision, career stress, perceived
employability, financial distress
Career Goal Setting and Goal Pursuit in Young Adults: The Role of Financial Distress
Informed by goal-setting/self-regulatory theories, we tested the mediating role of career-related effort
(i.e., goal striving) in the relationships between career-related indecision (i.e., goal ambiguity) and
career-related stress (i.e., affect) and perceived employability (i.e., career-related attitude) and
examined the effect of financial distress as a moderator in these direct and indirect relationships. Using
a sample of 202 young adults (Mage ¼ 19.8 years, 81.7% female), we found career indecision was related
negatively to effort and perceived employability and positively to stress, with effort mediating between
indecision and both stress and perceived employability. However, financial distress influenced these
relationships. The associations between career indecision and effort and perceived employability were
more negative and the associations between career indecision and stress were more positive when
financial distress was higher. The study contributes by identifying how financial distress affects the
relationships between career indecision, effort, and other career variable
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