2,233 research outputs found
Classification of electromagnetic resonances in finite inhomogeneous three-dimensional structures
We present a simple and unified classification of macroscopic electromagnetic
resonances in finite arbitrarily inhomogeneous isotropic dielectric 3D
structures situated in free space. By observing the complex-plane dynamics of
the spatial spectrum of the volume integral operator as a function of angular
frequency and constitutive parameters we identify and generalize all the usual
resonances, including complex plasmons, real laser resonances in media with
gain, and real quasi-static resonances in media with negative permittivity and
gain.Comment: 4 pages, 2 figure
Body Positions Used by Healthy and Frail Older Adults to Rise from the Floor
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/111270/1/j.1532-5415.2000.tb03874.x.pd
Inferring the post-merger gravitational wave emission from binary neutron star coalescences
We present a robust method to characterize the gravitational wave emission
from the remnant of a neutron star coalescence. Our approach makes only minimal
assumptions about the morphology of the signal and provides a full posterior
probability distribution of the underlying waveform. We apply our method on
simulated data from a network of advanced ground-based detectors and
demonstrate the gravitational wave signal reconstruction. We study the
reconstruction quality for different binary configurations and equations of
state for the colliding neutron stars. We show how our method can be used to
constrain the yet-uncertain equation of state of neutron star matter. The
constraints on the equation of state we derive are complimentary to
measurements of the tidal deformation of the colliding neutron stars during the
late inspiral phase. In the case of a non-detection of a post-merger signal
following a binary neutron star inspiral we show that we can place upper limits
on the energy emitted.Comment: 11 pages, 12 figures, final published versio
Rising from the Floor in Older Adults
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/111267/1/j.1532-5415.1997.tb03088.x.pd
Chair Design Affects How Older Adults Rise from a Chair
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/111137/1/j.1532-5415.1996.tb06402.x.pd
The Bath Environment, the Bathing Task, and the Older Adult: A Review and Future Directions for Bathing Disability Research
Purpose. To review existing research studies to identify optimal intervention strategies for remediation and prevention of bathing disability and future directions for bathing disability research.
Method. Bathing disability, defined as problems in the interaction between the person and the environment during bathing performance, is examined through a comprehensive, narrative literature review.
Results. Most studies focus on the relationship between the person and the environment (such as assistive device use and environmental hazards) while fewer studies focus on analysis of the bathing task or the interaction of the person, environment, and bathing task. Of intervention studies, most do not focus solely on remediation of bathing disability and outcomes vary widely.
Conclusions. In order to help remediate and prevent bathing disability, it will be necessary to better understand and measure the person-environment-occupation interaction involved in bathing as it relates to specific groups of older adults
Stepping Responses of Young and Old Adults to Postural Disturbances: Kinematics
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/111171/1/j.1532-5415.1994.tb04972.x.pd
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