819 research outputs found
Inversion of Cycle Index Sum Relations for 2- and 3-Connected Graphs
AbstractAlgebraic inversion of cycle index sum relations is employed to derive new algorithms for counting unlabeled 2-connected graphs, homeomorphically irreducible 2-connected graphs, and 3-connected graphs. The new algorithms are significantly more efficient than earlier ones, both asymptotically and for modest values of the order. Tables of computed results are included
ADEAâADEE Shaping the Future of Dental Education III: From interprofessional education to transprofessional learning: Reflections from dentistry, applied linguistics, and law
The World Health Organization has indicated that Interprofessional Education (IPE) occurs when âstudents from two or more professions learn about, from, and with each otherâ.1 These IPE experiences are widely thought to provide students with the opportunity to learn and practice the knowledge, skills, behaviors and attitudes that will ultimately translate into the provision of safer, higher quality, teamâbased patient care when they become health care practitioners in collaborative care environments. At the joint American Dental Education Association (ADEA) and Association for Dental Education in Europe (ADEE) 2019 Shaping the Future of Dental Education III conference in Brescia, Italy, delegates explored the concept of transprofessional learning, where students learn skills across a wider range of professions than health professions alone. The workshop continued the dialogue that began during the 2017 ADEAâADEE Shaping the Future of Dental Education II conference in London, England as previously reported by Davis et al.,2 and explored the use of transprofessional learning through the lenses of dental education, applied linguistics education and law education focusing on the use of reflective practices. The workshop brought together educators from around the globe in a highly interactive setting where they had the opportunity to discuss and develop tools and practices for teaching reflective practice by using a transprofessional learning approach
Allocation in Practice
How do we allocate scarcere sources? How do we fairly allocate costs? These
are two pressing challenges facing society today. I discuss two recent projects
at NICTA concerning resource and cost allocation. In the first, we have been
working with FoodBank Local, a social startup working in collaboration with
food bank charities around the world to optimise the logistics of collecting
and distributing donated food. Before we can distribute this food, we must
decide how to allocate it to different charities and food kitchens. This gives
rise to a fair division problem with several new dimensions, rarely considered
in the literature. In the second, we have been looking at cost allocation
within the distribution network of a large multinational company. This also has
several new dimensions rarely considered in the literature.Comment: To appear in Proc. of 37th edition of the German Conference on
Artificial Intelligence (KI 2014), Springer LNC
Peripheral brain-derived neurotrophic factor contributes to chronic osteoarthritis joint pain
Brain-derived neurotrophic factor (BDNF) and the high-affinity receptor tropomyosin receptor kinase B (TrkB) have important roles in neuronal survival and in spinal sensitization mechanisms associated with chronic pain. Recent clinical evidence also supports a peripheral role of BDNF in osteoarthritis (OA), with synovial expression of TrkB associated with higher OA pain. The aim of this study was to use clinical samples and animal models to explore the potential contribution of knee joint BDNF/TrkB signalling to chronic OA pain. Brain-derived neurotrophic factor and TrkB mRNA and protein were present in knee synovia from OA patients (16 women, 14 men, median age 67 years [interquartile range: 61-73]). There was a significant positive correlation between mRNA expression of NTRK2 (TrkB) and the proinflammatory chemokine fractalkine in the OA synovia. Using the surgical medial meniscal transection (MNX) model and the chemical monosodium iodoacetate (MIA) model of OA pain in male rats, the effects of peripheral BDNF injection, vs sequestering endogenous BDNF with TrkB-Fc chimera, on established pain behaviour were determined. Intra-articular injection of BDNF augmented established OA pain behaviour in MIA rats, but had no effect in controls. Intra-articular injection of the TrkB-Fc chimera acutely reversed pain behaviour to a similar extent in both models of OA pain (weight-bearing asymmetry MIA: -11 ± 4%, MNX: -12 ± 4%), compared to vehicle treatment. Our data suggesting a contribution of peripheral knee joint BDNF/TrkB signalling in the maintenance of chronic OA joint pain support further investigation of the therapeutic potential of this target
Stress-Biased Anisotropic Microcracking in Zirconia Polycrystals
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/65263/1/j.1151-2916.1990.tb05152.x.pd
The effect of twisted magnetic field on the resonant absorption of MHD waves in coronal loops
The standing quasi modes in a cylindrical incompressible flux tube with
magnetic twist that undergoes a radial density structuring is considered in
ideal magnetohydrodynamics (MHD). The radial structuring is assumed to be a
linearly varying density profile. Using the relevant connection formulae, the
dispersion relation for the MHD waves is derived and solved numerically to
obtain both the frequencies and damping rates of the fundamental and
first-overtone modes of both the kink (m=1) and fluting (m=2,3) waves. It was
found that a magnetic twist will increase the frequencies, damping rates and
the ratio of the oscillation frequency to the damping rate of these modes. The
period ratio P_1/P_2 of the fundamental and its first-overtone surface waves
for kink (m=1) and fluting (m=2,3) modes is lower than 2 (the value for an
untwisted loop) in the presence of twisted magnetic field. For the kink modes,
particularly, the magnetic twists B_{\phi}/B_z=0.0065 and 0.0255 can achieve
deviations from 2 of the same order of magnitude as in the observations.
Furthermore, for the fundamental kink body waves, the frequency bandwidth
increases with increasing the magnetic twist.Comment: 18 pages, 9 figure
NEST: A Comprehensive Model for Scintillation Yield in Liquid Xenon
A comprehensive model for explaining scintillation yield in liquid xenon is
introduced. We unify various definitions of work function which abound in the
literature and incorporate all available data on electron recoil scintillation
yield. This results in a better understanding of electron recoil, and
facilitates an improved description of nuclear recoil. An incident gamma energy
range of O(1 keV) to O(1 MeV) and electric fields between 0 and O(10 kV/cm) are
incorporated into this heuristic model. We show results from a Geant4
implementation, but because the model has a few free parameters, implementation
in any simulation package should be simple. We use a quasi-empirical approach,
with an objective of improving detector calibrations and performance
verification. The model will aid in the design and optimization of future
detectors. This model is also easy to extend to other noble elements. In this
paper we lay the foundation for an exhaustive simulation code which we call
NEST (Noble Element Simulation Technique).Comment: 24 pages, 9 figures, 3 table
On Solving the Coronal Heating Problem
This article assesses the current state of understanding of coronal heating,
outlines the key elements of a comprehensive strategy for solving the problem,
and warns of obstacles that must be overcome along the way.Comment: Accepted by Solar Physics; Published by Solar Physic
Search for supersymmetry with a dominant R-parity violating LQDbar couplings in e+e- collisions at centre-of-mass energies of 130GeV to 172 GeV
A search for pair-production of supersymmetric particles under the assumption
that R-parity is violated via a dominant LQDbar coupling has been performed
using the data collected by ALEPH at centre-of-mass energies of 130-172 GeV.
The observed candidate events in the data are in agreement with the Standard
Model expectation. This result is translated into lower limits on the masses of
charginos, neutralinos, sleptons, sneutrinos and squarks. For instance, for
m_0=500 GeV/c^2 and tan(beta)=sqrt(2) charginos with masses smaller than 81
GeV/c^2 and neutralinos with masses smaller than 29 GeV/c^2 are excluded at the
95% confidence level for any generation structure of the LQDbar coupling.Comment: 32 pages, 30 figure
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