Now showing items 25071-25080 of 26351
A Discontinuous Galerkin Method for Strain Gradient Plasticity.
(2009)
This dissertation presents a formulation of incompatibility based strain gradient
plasticity utilizing discontinuous Galerkin finite element methods. Foundations of
the classical theory of plasticity are laid out including ...
Perfusion Estimation in Volumetric Imaging of Ultrasound Contrast Agents.
(2009)
This dissertation presents research involving the investigation of perfusion measured using volumetric imaging of ultrasound contrast agents. Ultrasound contrast agents are micrometer-sized gas bubbles that track the blood ...
Experimental Techniques for Characterizing the Thermo-Electro-Mechanical Shakedown Response of SMA Wires and Tubes.
(2010)
Shape Memory Alloys (SMAs) are a unique and valuable group of active materials. NiTi, the most popular SMA, has a power density orders of magnitude greater than any other known material, making it valuable in the medical ...
Simple Partial Models for Complex Dynamical Systems.
(2010)
An agent in an unknown environment may wish to learn a model that allows it to make predictions about future events and anticipate the consequences of its actions. Such a model can greatly enhance the agent's ability to ...
On Predictive Linear Gaussian Models.
(2009)
Models are used by artificial agents to make predictions about the future; agents then use these predictions to modify their behavior. In many cases, these models are not known a priori and so the agent must learn a model ...
A Body-Exact Strip Theory Approach to Ship Motion Computations.
(2009)
A body-exact strip theory is developed to solve nonlinear ship motion problems in the time-domain. The hydrodynamic model uses linearized free surface conditions for computational efficiency and stability, and exact body ...
Analysis and Strategies for Five-Axis Near-Dry EDM Milling.
(2009)
Strategies for precision five-axis near-dry electric discharge machining (EDM) milling are investigated. By understanding the material removal process behind near-dry EDM milling, its performance can further be improved ...
Network Alignment in Healthcare: A Socio-Technical Approach to System-Wide Improvement and Patient Safety.
(2012)
Local process improvement efforts have permeated the healthcare industry, yet the ability to extend these improvements across the system continues to be a challenge. Coordinating services, or patient care, across organizational ...
Energy and Position Reconstruction in Pixelated CdZnTe Detectors.
(2012)
Pixelated CdZnTe detectors can achieve 3D position reconstruction, which enables 4pi Compton imaging of gamma rays with a single detector and energy resolution better than 1% full width at half maximum (FWHM) at 662 keV. ...
Mechanics of Mitotic Spindle Poles and Polymerization Dynamics of Microtubules.
(2011)
During cell division, chromosomes must faithfully segregate to maintain genome integrity,
and this dynamic mechanical process is driven by the macromolecular machinery
of the mitotic spindle. However, little is known about ...