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Now showing items 281-290 of 2929
Collage Sculptures
(2012-02-14)
In this thesis, I develop a program to automatically assemble collage sculptures, sets of arbitrary, non-overlapping elements arranged to fill out a recognizable target shape according to a set of procedural rules. A user ...
Optimal Railroad Rail Grinding for Fatigue Mitigation
(2012-02-14)
This dissertation aims to study the benefit of rail grinding on service life of railroad rails, focusing on failures due to rolling contact fatigue (RCF) at the rail head. Assuming a tangent rail with one-point contact at ...
Computer-Assisted Instruction in an Urban School Setting: Fifth-Grade Teachers’ Perceptions and Students' Attitudes Toward Science
(2012-02-14)
The purpose of this dissertation study was to investigate a specific computer-assisted instructional software, Study Hall 101, in fifth-grade science. The study was conducted on an urban, elementary school campus in a ...
Evolution of Frictional Behavior of Punchbowl Fault Gouges Sheared at Seismic Slip Rates and Mechanical and Hydraulic Properties of Nankai Trough Accretionary Prism Sediments Deformed at Different Loading Paths
(2012-02-14)
Frictional measurements were made on natural fault gouge at seismic slip rates using a
high-speed rotary-shear apparatus to study effects of slip velocity, acceleration,
displacement, normal stress, and water content. ...
In Situ Iron Oxide Emplacement for Groundwater Arsenic Remediation
(2012-02-14)
Iron oxide-bearing minerals have long been recognized as an effective reactive media for arsenic-contaminated groundwater remediation. This research aimed to develop a technique that could facilitate in situ oxidative ...
Multisensor Fusion of Ground-based and Airborne Remote Sensing Data for Crop Condition Assessment
(2012-02-14)
In this study, the performances of the optical sensors and instruments carried on both ground-based and airborne platforms were evaluated for monitoring crop growing status, detecting the vegetation response to aerial ...
Production Data Integration into High Resolution Geologic Models with Trajectory-based Methods and A Dual Scale Approach
(2012-02-14)
Inverse problems associated with reservoir characterization are typically underdetermined
and often have difficulties associated with stability and convergence of the
solution. A common approach to address this issue is ...
Bayesian Network Analysis of Radiological Dispersal Device Acquisitions
(2012-02-14)
It remains unlikely that a terrorist organization could produce or procure an actual nuclear weapon. However, the construction of a radiological dispersal device (RDD) from commercially produced radioactive sources and ...
Microplasma Discharges in High Pressure Gases Scaling Towards the Sub-micron Regime
(2012-02-14)
Atmospheric pressure microplasmas are uniquely characterized by their very high energy densities and also by their small discharge sizes. These properties allow for unique applications in plasma processing technologies. ...
The Feasibility of Natural Gas as a Fuel Source for Modern Land-Based Drilling Rigs
(2012-02-14)
The purpose of this study is to determine the feasibility of replacing diesel with natural gas as a fuel source for modern drilling rigs. More specifically, this thesis (1) establishes a control baseline by examining ...