37,619 research outputs found
Bike Athlete Performance
Faculty reflection on VCU Great Bike Race Book course.
Course Description: This track will focus on nutritional and training practices of cyclists competing in the UCI Worlds.
YouTube Videos referenced in reflection:
VCU Exercise Science: Christian Vande Velde Interview
VCU Exercise Science - Sports Nutritionist Dr Janet Rankin Interview
Fuel for a 5 Hour Ride
Assignment 3: My Musette
Assignment 4: Bike Athlete Performance
VCU Exercise Science: Professional Cyclist Evie Stevens Intervie
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A quantum theoretical explanation for probability judgment errors
A quantum probability model is introduced and used to explain human probability judgment errors including the conjunction, disjunction, inverse, and conditional fallacies, as well as unpacking effects and partitioning effects. Quantum probability theory is a general and coherent theory based on a set of (von Neumann) axioms which relax some of the constraints underlying classic (Kolmogorov) probability theory. The quantum model is compared and contrasted with other competing explanations for these judgment errors including the representativeness heuristic, the averaging model, and a memory retrieval model for probability judgments. The quantum model also provides ways to extend Bayesian, fuzzy set, and fuzzy trace theories. We conclude that quantum information processing principles provide a viable and promising new way to understand human judgment and reasoning
Effective Carrier Mean-Free Path in Confined Geometries
The concept of exchange length is used to determine the effects of boundary
scattering on transport in samples of circular and rectangular cross section.
Analytical expressions are presented for an effective mean-free path for
transport in the axial direction. The relationship to the phonon thermal
conductivity is discussed. (This letter outlines the results presented in
detail in the longer version, available as cond-mat/9402081)Comment: 12 pages, Late
Magnetic flux pinning in superconductors with hyperbolic-tesselation arrays of pinning sites
We study magnetic flux interacting with arrays of pinning sites (APS) placed
on vertices of hyperbolic tesselations (HT). We show that, due to the gradient
in the density of pinning sites, HT APS are capable of trapping vortices for a
broad range of applied magnetic fluxes. Thus, the penetration of magnetic field
in HT APS is essentially different from the usual scenario predicted by the
Bean model. We demonstrate that, due to the enhanced asymmetry of the surface
barrier for vortex entry and exit, this HT APS could be used as a "capacitor"
to store magnetic flux.Comment: 7 pages, 5 figure
Phase diagram of the chains in and
We use a mapping of the multiband Hubbard model for chains in
(R=Y or a rare earth) onto a model and the
description of the charge dynamics of the latter in terms pf s spinless model,
to study the electronic structure of the chains. We briefly review results for
the optical conductivity and we calculate the quantum phase diagram of quarter
filled chains including Coulomb repulsion up to that between
next-nearest-neighbor atoms , using the resulting effective
Hamiltonian, mapped onto an XXZ chain, and the method of crossing of excitation
spectra. The method gives accurate results for the boundaries of the metallic
phase in this case. The inclusion of greatly enhances the region of
metallic behavior of the chains.Comment: 10 pages, 3 figures. Submited to Phys. Rev.
Simple Non-Markovian Microscopic Models for the Depolarizing Channel of a Single Qubit
The archetypal one-qubit noisy channels ---depolarizing, phase-damping and
amplitude-damping channels--- describe both Markovian and non-Markovian
evolution. Simple microscopic models for the depolarizing channel, both
classical and quantum, are considered. Microscopic models which describe phase
damping and amplitude damping channels are briefly reviewed.Comment: 13 pages, 2 figures. Title corrected. Paper rewritten. Added
references. Some typos and errors corrected. Author adde
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