Self-assembly is the process by which objects autonomously assemble into complexes. It is believed that self-assembly technology will ultimately permit the precise fabrication of complex nanostructures. Of particular interest are self-assembly systems that are highly programmable. That is, we can view a self-assembly system as analogous to a program, the...
This dissertation investigates whether residents of Windhoek's squatter settlements are changing urban space through their efforts to secure housing and to conduct remunerative work from their dwellings. Studies about the informal economy have moved from analysis of it as a distinct sector to the social and political processes that create...
Measurements of the ratios of charged kaon decay rates for Ke3/K2pi, Kmu3/K2pi and Kmu3/Ke3 are presented. These measurements are based on charged kaon decays collected in a dedicated run in 2003 by the NA48/2 experiment at CERN. The results obtained are Ke3/K2pi = 0.2470 +- 0.0009 (stat) +- 0.0004 (syst)...
This dissertation examines the nature and development of Protestant ideology in Tudor England. Historians have traditionally seen Tudor Protestants as classic "magisterial" reformers. Unlike "radical reformers," who formed separated sects and rejected the union of church and state, English Protestants are seen as deeply committed to royal authority and the...
This is a visualization of an event reconstructed in CMS HGCal. This event is consist of 10 pions with a transverse momentum of 35 GeV. The reconstruction algorithm groups all valid energy deposits (hits) into clusters, each incoming particle having one or a few corresponding clusters, so that the energy...
Three-dimensional imaging techniques have been widely used in both industry and academia. Time-of-flight (ToF) sensors offer a promising method of 3D imaging due to compact size and low complexity. However, state-of-the-art ToF sensors only have depth resolutions of centimeters due to limitations in the modulation frequencies that can be used....
This is a movie of three galaxy formation simulations I ran as part of my research.
The color of each pixel represents the temperature of the gas (blue for cold and green for hot) and the brightness of each pixel represents the density (dim for low density bright for high...
Portrait of the Galaxy is a snapshot from a 3d rendering of a galaxy that displays the complex structure of the gas component of the simulation. This gas component is difficult to observe in real telescopes but with visualizations and simulations like these we can begin to understand how to...
Mixing due to cutting-and-shuffling is studied at a fundamental level using 2D mappings known as Piecewise Isometries (PWI) which can create beautiful mixing patterns. The PWI studied here splits a hemispherical shell (HS) into four curved triangular pieces that are rearranged to make a shuffled HS. Applying the PWI repeatedly...
This visualization shows two-photon imaging of GCamp6f in hippocampal pyramidal neurons as a mouse navigates a virtual reality maze. These techniques give us an indirect measure of activity in neurons or small compartments of neurons in an awake, behaving animal. The hippocampus has been well characterized as playing an essential...