3 Matching Results

Results open in a new window/tab.

Ligand Rearrangements of Organometallic Complexes inSolution (open access)

Ligand Rearrangements of Organometallic Complexes inSolution

Many chemical reactions utilize organometallic complexes as catalysts. These complexes find use in reactions as varied as bond activation, polymerization, and isomerization. This thesis outlines the construction of a new ultrafast laser system with an emphasis on the generation of tunable mid-infrared pulses, data collection, and data analysis.
Date: May 8, 2006
Creator: Shanoski, Jennifer E.
System: The UNT Digital Library
An investigation of exploitation versus exploration in GBEA optimization of PORS 15 and 16 Problems (open access)

An investigation of exploitation versus exploration in GBEA optimization of PORS 15 and 16 Problems

It was hypothesized that the variations in time to solution are driven by the competing mechanisms of exploration and exploitation.This thesis explores this hypothesis by examining two contrasting problems that embody the hypothesized tradeoff between exploration and exploitation. Plus one recall store (PORS) is an optimization problem based on the idea of a simple calculator with four buttons: plus, one, store, and recall. Integer addition and store are classified as operations, and one and memory recall are classified as terminals. The goal is to arrange a fixed number of keystrokes in a way that maximizes the numerical result. PORS 15 (15 keystrokes) represents the subset of difficult PORS problems and PORS 16 (16 keystrokes) represents the subset of PORS problems that are easiest to optimize. The goal of this work is to examine the tradeoff between exploitation and exploration in graph based evolutionary algorithm (GBEA) optimization. To do this, computational experiments are used to examine how solutions evolve in PORS 15 and 16 problems when solved using GBEAs. The experiment is comprised of three components; the graphs and the population, the evolutionary algorithm rule set, and the example problems. The complete, hypercube, and cycle graphs were used for this experiment. …
Date: May 8, 2012
Creator: Koch, Kaelynn
System: The UNT Digital Library
Wither the Whip, Strengthen the Sword: Colonial Legacy and Geno-/Politicide in the Post-Colonial World, 1945-2012 (open access)

Wither the Whip, Strengthen the Sword: Colonial Legacy and Geno-/Politicide in the Post-Colonial World, 1945-2012

Undergraduate thesis examining the causes of geno-/politicides and the potential correlation between colonial legacy and the increased likelihood of seeing geno-/politicide across all newly independent states post-WWII from 1945-2012. This study reviews colonialism through an anthropological and sociological lens and applies it to state-structure's impact on political violence.
Date: May 8, 2014
Creator: Wood, Colin
System: The UNT Digital Library