We theoretically investigate the ground-state properties of ferromagnetic metal/conjugated polymer interfaces. The work was partially motivated by recent experiments in which injection of spin-polarized electrons from ferromagnetic contacts into thin films of conjugated polymers was reported. We use a one-dimensional nondegenerate Su-Schrieffer-Heeger Hamiltonian to describe the conjugated poly...

BACKGROUND AND OBJECTIVES Recent guidelines from the Association of American Medical Colleges and from the Accreditation Council for Graduate Medical Education strongly suggest that communications teaching and assessment be part of medical education at all levels. This study's objective was to validate an instrument to assess communications skills. This instrument, Common Ground, is linked to t...

Title of Dissertation: A STUDY OF REMOTELY SENSED AEROSOL PROPERTIES FROM GROUNDBASED SUN AND SKY SCANNING RADIOMETERS David M. Giles, Doctor of Philosophy, 2012 Directed By: Professor Russell R. Dickerson and Professor Anne M. Thompson, Department of Atmospheric and Oceanic Science Aerosol particles impact human health by degrading air quality and affect climate by heating or cooling the atmos...

We report sample preparation, structure, electrical resistivity, magnetic susceptibility and heat capacity studies of a new compound Yb2Ir3Ge5. We find that this compound crystallizes in an orthorhombic structure with a space group PMMN unlike the compound Ce2Ir3Ge5 which crystallizes in the tetragonal IBAM (U2Co3Si5 type) structure. Our resistivity measurements indicate that the compound Yb2Ir...

A new numerical method to calculate exact ground states of multifluxline systems with quenched disorder is presented, which is based on the minimum cost flow algorithm from combinatorial optimization. We discuss several models that can be studied with this method including their specific implementations, physically relevant observables and results: (1) The N-line model with N fluxlines (or dire...

Higher-order pushdown systems and ground tree rewriting systems can be seen as extensions of suffix word rewriting systems. Both classes generate infinite graphs with interesting logical properties. Indeed, the model-checking problem for monadic second order logic (respectively first order logic with a reachability predicate) is decidable on such graphs. We unify both models by introducing the ...

A newly designed printed slot antenna is presented that incorporates variable two band-notched functions for ultra-wideband (UWB) applications. The two band notches of this coplanar waveguide (CPW) fed antenna are achieved by an M-shaped slot (MSS) embedded in the radiating element and a C-shaped strip (CSS) close to ground plane, therefore two very narrow rejected properties in the wireless lo...

seismic waves are filtered as they pass through soil layers, from bedrock to surface. frequencies and amplitudes of the response wave are affected due to this filtration effect and this will result in different ground motion characteristics. therefore, it is important to consider the impact of the soil properties on the evaluation of earthquake ground motions for the design of structures. soil ...