Now showing items 31-40 of 53
A Deuterated Neutron Detector Array for the Study of Nuclear Reactions with Stable and Rare Isotope Beams.
(2014)
Deuterated liquid scintillation detectors have shown promising results as neutron spectrometers for nuclear science and other applications. Unlike normal hydrogen-based scintillators, they can provide neutron spectroscopic ...
Optimizing Photometric Redshift Estimation for Large Astronomical Surveys Using Boosted Decision Trees.
(2014)
Upcoming large-scale sky surveys will obtain photometric data for over 10^8 galaxies. The unprecedented size of such data sets make full spectroscopic followup impossible. Therefore, placing precision constraints on ...
Large-scale Real-space Kohn-Sham Density Functional Theory Calculations Using Adaptive Finite-element Discretization.
(2014)
Past few decades have seen an increasingly important role played by quantum mechanical calculations based on Kohn-Sham density functional theory (DFT) in the investigation of wide variety of materials properties. However, ...
Precision Measurement of Radiative Neutron Decay.
(2014)
The theory of quantum electrodynamics (QED) predicts that a neutron's decay into a proton, electron, and anti-neutrino will be accompanied by a radiative photon spectrum. While neutron decay is a prototypical example of ...
Measuring the Orbital Angular Momentum of Light with Time Mapping and Using it to Probe Higher Dimensional States.
(2014)
The orbital angular momentum of light (OAM) is a fundamental property of light. Beams with OAM have a helical wave front that carries quantized orbital angular momentum L hbar per photon, where L is any integer. This ...
First-principles and Continuum Modeling of Charge Transport in Li-O2 Batteries.
(2014)
Li-O2 batteries are a very attractive energy storage technology due to their high theoretical specific energy density. However, several critical challenges impede the development of a practical Li-O2 battery. One of these ...
Dynamics of Convergent Migration and Mean Motion Resonances in Planetary Systems.
(2014)
Recent observations of solar systems orbiting other stars show that exoplanets display an enormous range of physical properties and that planetary systems display a diverse set of architectures, which motivate further ...
Electrical Generation of Spin Polarization in Strained III-V Semiconductors.
(2014)
For the advancement of spin-based electronics applications, as well as the advancement of semiconductor technology in general, an understanding of spin-related phenomena in semiconductors is of crucial importance. This ...
The Role of Topological Constraints in RNA Tertiary Folding and Dynamics.
(2014)
Functional RNA molecules must fold into highly complex three-dimensional (3D) structures and undergo precise structural dynamics in order to carry out their biological functions. However, the principles that govern RNA 3D ...
Blockmodeling Techniques for Complex Networks.
(2014)
The class of network models known as stochastic blockmodels has recently been gaining popularity. In this dissertation, we present new work that uses blockmodels to answer questions about networks. We create a blockmodel ...