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