10,363 research outputs found
Staggered Wages and Output Dynamics under Disinflation.
We study the output costs of a reduction in monetary growth in a dynamic general equilibrium model with staggered wages. The money wage is fixed for two periods, and is chosen according to intertemporal optimization. Agents have labour market monopoly power. We show that the introduction of microfoundations helps to resolve the puzzle raised by directly postulated models, namely that disinflation in staggered pricing models causes a boom. In our model disinflation, whether unanticipated or anticipated, unambiguously causes a slump.WAGES ; INFLATION ; MONEY
Is Pulse-Dye Laser Therapy an Effective Treatment for Burn Scars?
OBJECTIVE: The objective of this selective EBM review is to determine whether or not pulse-dye laser therapy is an effective treatment for burn scars.
STUDY DESIGN: Systematic review of two randomized controlled trials and one case series study published in 1998, 2003, and 2012.
DATA SOURCES: Two randomized controlled trials and one case series study published after 1997 were obtained using Medline and PubMed
OUTCOMES MEASURED: Symptoms of pruritus, pain, and burning sensation measured for improvement by patient survey of pain scales and parent’s reports of complaints in pediatric patients with symptoms by way of pain scales and medication requests. Cosmetic appearance was measured by physician and patient evaluation, photograph of pre and post treatment burn scar evaluation by blinded non-medical evaluators, 3D topographic imaging, and the Vancouver Scar Scale.
RESULTS: Bailey et al. (2012) and Alster et al. (1998) demonstrated improvement in a majority of the subjects’ burn scar cosmetic characteristics, while Alster also showed significant improvement in burn scar pruritus. Allison et al. (2003) showed an improvement in pruritus symptoms but not significant in cosmetic appearance as compared to the control.
CONCLUSION: Evidence to support the efficacy of pulse-dye laser therapy as a treatment for the symptoms and cosmetic appearance of burn scars is inconclusive at this point in time due to the lack of a large subject population, standard of measurement, and a wide spectrum of subject age making it difficult to properly collect significant amounts of data to strongly support the efficacy of pulse-dye therapy in treating burn scars
Pulsar "Drifting"-Subpulse Polarization: No Evidence for Systematic Polarization-Angle Rotations
Polarization-angle density displays are given for pulsars B0809+74 and
B2303+30, which exhibit no evidence of the systematic polarization-angle
rotation within individual subpulses previously reported for these two stars.
The ``drifting'' subpulses of both pulsars exhibit strikingly linear and
circular polarization which appears to reflect the characteristics of two
nearly orthogonally polarized emission ``modes''--along which the severe
average-profile depolarization that is characteristic of their admixture at
comparable overall intensities.Comment: Accepted for publication in Astronomy & Astrophysic
The uncoupling limit of identical Hopf bifurcations with an application to perceptual bistability
We study the dynamics arising when two identical oscillators are coupled near
a Hopf bifurcation where we assume a parameter uncouples the system
at . Using a normal form for identical systems undergoing
Hopf bifurcation, we explore the dynamical properties. Matching the normal form
coefficients to a coupled Wilson-Cowan oscillator network gives an
understanding of different types of behaviour that arise in a model of
perceptual bistability. Notably, we find bistability between in-phase and
anti-phase solutions that demonstrates the feasibility for synchronisation to
act as the mechanism by which periodic inputs can be segregated (rather than
via strong inhibitory coupling, as in existing models). Using numerical
continuation we confirm our theoretical analysis for small coupling strength
and explore the bifurcation diagrams for large coupling strength, where the
normal form approximation breaks down
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Gravity gradient preliminary investigations on exhibit ''A'' Final report
Quartz microbalance gravity gradiometer performance test
Improved laboratory gradiometer can be a field survey instrument
Improvements made to quartz gradiometer minimize or eliminate disturbing effects from known error sources and permit sensitivity of + or - 1 times 10 to the minus 9th power/sec sq or better and measuring accuracy of + or - 5 times 10 to the minus 9th power/sec sq
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