Engineering Dissertations and Theses: Recent submissions
Now showing items 621-640 of 1055
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A Simple Mixture Theory for Isothermal and Non-isothermal Flows of n Newtonian and Generalized Newtonian Constituents including Interaction Effects
(University of Kansas, 2013-12-31)Development of mathematical models based on conservation and balance laws including constitutive theories are presented for a saturated mixture of n homogeneous, isotropic, and incompressible constituents for isothermal ... -
Fatigue Enhancement of Undersized, Drilled Crack-Arrest Holes
(University of Kansas, 2013-12-31)Fatigue cracks occur in steel bridges from repeated loads. If allowed to continue to grow, eventually the fatigue cracks will require either expensive repairs or reduction of traffic loads on the bridge, or they may lead ... -
Performance Analysis of an Annular Diffuser Under the Influence of a Gas Turbine Stage Exit Flow
(University of Kansas, 2013-12-31)In this investigation the performance of a gas turbine exhaust diffuser subject to the outlet flow conditions of a turbine stage is evaluated. Towards that goal, a fully three-dimensional computational analysis has been ... -
Towards a Formal Verification of the Trusted Platform Module
(University of Kansas, 2013-05-31)The Trusted Platform Module (TPM) serves as the root-of-trust in a trusted computing environment, and therefore warrants formal specification and verification. This thesis presents results of an effort to specify and verify ... -
Power, Efficiency, and Emissions Optimization of a Single Cylinder Direct-Injected Diesel Engine for Testing of Alternative Fuels through Heat Release Modeling
(University of Kansas, 2013-08-31)The increasing dependency of the global economy on mineral fuels necessitates the investigation and future implementation of renewable fuels. Within the spectrum of compression ignition engines, this requires an understanding ... -
A SPRAY REACTOR CONCEPT FOR CATALYTIC OXIDATION OF P-XYLENE TO PRODUCE HIGH-PURITY TEREPHTHALIC ACID
(University of Kansas, 2013-08-31)Terephthalic acid (TPA), with current annual world capacity of exceeding 50 million metric tons, is a commercially important chemical used primarily in the manufacture of polyesters. A spray reactor in which the liquid ... -
Permeability, Resistivity and Strength of Fouled Railroad Ballast
(University of Kansas, 2013-08-31)Ballasted tracks are the most common tracks used in the railroad industry and are designed to provide a stable, safe, and efficient rail foundation. A ballasted track consists of superstructure (ties, fasteners, and rails) ... -
Geocell-Reinforced Unpaved and Paved Roads with Recycled Asphalt Pavement (RAP) Bases: Experimental Study and Damage Model Development
(University of Kansas, 2013-08-31)Recycled Asphalt Pavement (RAP) is a removed and reprocessed pavement material from deteriorated asphalt pavements containing asphalt binder and aggregates. The use of RAP can reduce the cost of construction materials, ... -
Framework of Real-Time Optical Nyquist-WDM Receiver using Matlab & Simulink
(University of Kansas, 2013-08-31)I investigate an optical Nyquist-WDM Bit Error Rate (BER) detection system. A transmitter and receiver system is simulated, using Matlab and Simulink, to form a working algorithm and to study the effects of the different ... -
Building an Intelligent Knowledgebase of Brachiopod Paleontology
(University of Kansas, 2013-08-31)Science advances not only because of new discoveries, but also due to revolutionary ideas drawn from accumulated data. The quality of studies in paleontology, in particular, depends on accessibility of fossil data. This ... -
Instrumentation and Evaluation of Distributed Computations
(University of Kansas, 2013-08-31)Distributed computations are a very important aspect of modern computing, especially given the rise of distributed systems used for applications such as web search, massively multiplayer online games, financial trading, ... -
Development and Improvement of Airborne Remote Sensing Radar Platforms
(University of Kansas, 2013-08-31)With the recent record ice melt in the Arctic as well as the dramatic changes occurring in the Antarctic, the need and urgency to characterize ice sheets in these regions has become a research thrust of both the NSF and ... -
Mathematical Modeling and Numerical Simulation of Liquid-Solid and Solid-Liquid Phase Change
(University of Kansas, 2013-08-31)This thesis presents numerical simulations of liquid-solid and solid-liquid phase change processes using mathematical models in Lagrangian and Eulerian descriptions. The mathematical models are derived by assuming a smooth ... -
Real-Time Obstacle and Collision Avoidance System for Fixed-Wing Unmanned Aerial Systems
(University of Kansas, 2013-08-31)The motivation for the research presented in this dissertation is to provide a two-fold solution to the problem of non-cooperative reactive mid-air threat avoidance for fixed-wing unmanned aerial systems. The first phase ... -
2D Squeezing-flow of a Non-Newtonian Fluid Between Viscoelastic Walls: Numerical Simulations
(University of Kansas, 2013-08-31)Abstract This study is part of a broader research plan to design and develop microbicides to prevent against HIV (Human Immunodeficiency Virus) and other sexually transmitted infections (STIs). A microbicide is a topical ... -
Analytical and Experimental Investigation for Distortion-Induced Fatigue in Steel Bridges
(University of Kansas, 2013-08-31)Distortion-induced fatigue has been extensively studied; however, retrofit techniques currently used are expensive and/or time consuming to implement. These retrofit techniques primarily fall into two categories--stiffening ... -
Development and Implementation of a VHF High Power Amplifier for the Multi-Channel Coherent Radar Depth Sounder/Imager System
(University of Kansas, 2013-08-31)This thesis presents the implementation and characterization of a VHF high power amplifier developed for the Multi-channel Coherent Radar Depth Sounder/Imager (MCoRDS/I) system. MCoRDS/I is used to collect data on the ... -
Detecting and Understanding Dynamically Dead Instructions for Contemporary Architectures
(University of Kansas, 2013-08-31)Instructions executed by the processor are dynamically dead if the values they produce are not used by the program. Executing such useless instructions can potentially slow-down program execution and waste power. The goal ... -
A High-Throughput Macromolecule Characterization System
(University of Kansas, 2013-08-31)The size and complexity in structure of biopharmaceutical products makes them more susceptible to chemical or structural changes leading to lower potency or altered immunogenicity. Sustaining the stability of macromolecules ... -
The Development of a Porcine Model to Evaluate Wound Healing and Infection of Transcutaneous Osseointegrated Weight-Bearing Prostheses
(University of Kansas, 2013-05-31)Clinical studies have shown that up to 73.9% of the 1.04 million US lower limb amputees report skin problems such as sweating, irritation, and sores associated with their conventional prosthesis. An alternative option ...