Engineering Dissertations and Theses: Recent submissions
Now showing items 921-940 of 1055
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Experimental and Modeling Studies of Two-Phase Flow in Porous Media and Its Effects on the Performance of a PEM Fuel Cell
(University of Kansas, 2010-01-01)An experimental investigation was conducted to study the two-phase flow properties of porous media used in proton exchange membrane (PEM) fuel cells. The liquid and gas phase relative permeability of porous media used in ... -
Collective Machine Learning: Team Learning and Classification in Multi-Agent Systems
(University of Kansas, 2009-12-04)This dissertation focuses on the collaboration of multiple heterogeneous, intelligent agents (hardware or software) which collaborate to learn a task and are capable of sharing knowledge. The concept of collaborative ... -
TRACKING THE LIFE CYCLE OF CONSTRUCTION STEEL: THE DEVELOPMENT OF A RESOURCE LOOP
(University of Kansas, 2009-12-17)Cradle-to-grave model is established on the assumption of a model of one-way, linear flow of materials in the industrial system. Eco-efficiency, as the design strategy of the cradle-to-grave model, aims to reduce the ... -
Evaluation of Multiple Corrosion Protection Systems for Reinforced Concrete Bridge Decks
(University of Kansas, 2009-12-09)Chloride-induced corrosion is one of the leading causes of premature serviceability failure in reinforced concrete bridge decks. In an effort to mitigate the effect of corrosion on the longevity of concrete bridge decks, ... -
Investigate the Development of a Wireless Flight Test System
(University of Kansas, 2009-12-23)This thesis describes the development and fight testing of a wireless flight test data acquisition system based on the IEEE 802.11 a/b/g protocols using low cost Commercial-Off-The-Shelf (COTS) equipment and software. The ... -
Synthesis Techniques for Semi-Custom Dynamically Reconfigurable Superscalar Processors
(University of Kansas, 2009-12-22)The accelerated adoption of reconfigurable computing foreshadows a computational paradigm shift, aimed at fulfilling the need of customizable yet high-performance flexible hardware. Reconfigurable computing fulfills this ... -
Baseline tetracycline and tetracycline resistance levels in perennial, wadeable streams of Kansas and Nebraska
(University of Kansas, 2009-12-04)Antibiotics and antibiotic resistance are emerging contaminants. Tetracyclines are common antibiotics with a well known mode of action and multiple resistance determinants. Water column samples were collected from 22 streams ... -
Reduced-Complexity Joint Frequency, Timing and Phase Recovery for PAM Based CPM Receivers
(University of Kansas, 2009-12-17)In this thesis, we present a reduced-complexity decision-directed joint timing and phase recovery method for continuous phase modulation (CPM). Using a simple linear modulation--pulse amplitude modulation (PAM)--representation ... -
Motion Estimation in Static Magnetic Resonance Elastography
(University of Kansas, 2009-12-09)Elastography is the imaging of the biomechanical properties of a tissue to detect and diagnose abnormal pathologies in a variety of disease conditions. Static Magnetic Resonance Elastography (MRE) is a modality of elastography ... -
Mapping of Ice Sheet Deep Layers and Fast Outlet Glaciers with Multi-Channel-High-Sensitivity Radar
(University of Kansas, 2009-12-29)This dissertation discusses the waveform design, the development of SAR and clutter reduction algorithms for MCRDS radars that are developed at CReSIS to map the ice-sheet bed, deep internal layers and fast-flowing outlet ... -
An Approach to Ground Moving Target Indication Using Multiple Resolutions of Multilook Synthetic Aperture Radar Images
(University of Kansas, 2009-12-15)Ground moving target indication (GMTI) using multiple resolutions of synthetic aperture radar (SAR) images to estimate the clutter scattering statistics is shown to outperform conventional sample matrix inversion space-time ... -
Towards future method hotness prediction for Virtual Machines
(University of Kansas, 2009-12-23)Application profiling is a popular technique that attempts to understand program behavior to improve its performance. Offline profiling, although beneficial for several applications, fails in cases where prior program runs ... -
EXPERIMENTAL STUDY ON TRIANGULAR APERTURE GEOGRID-REINFORCED BASES OVER WEAK SUBGRADE UNDER CYCLIC LOADING
(University of Kansas, 2009-12-09)The objective of this study is to investigate the behavior of triangular aperture geogrid-reinforced bases over weak subgrade under cyclic loading through laboratory testing. Behavior of unpaved structures, such as permanent ... -
VISCOELASTIC AND FATIGUE PROPERTIES OF DENTAL ADHESIVES AND THEIR IMPACT ON DENTIN-ADHESIVE INTERFACE DURABILITY
(University of Kansas, 2009-12-22)The clinical performance of composite tooth restoration under cyclic loading is impacted by the behavior of the dentin-adhesive (d-a) interface, which is a complex construct of different material components. Dentin adhesive ... -
High-Pressure Phase Equilibria of Ionic Liquids and Compressed Gases for Applications in Reactions and Absorption Refrigeration
(University of Kansas, 2009-12-29)Environmental concerns using volatile organic compounds have attracted intensive research of replacing them with more sustainable ("greener") solvents. Ionic liquids have been promising alternatives due to their unique ... -
DETERMINING THE OPTIMUM PLACEMENT OF A PHASE CHANGE MATERIALS (PCM) THERMAL SHIELD INSIDE FRAME WALLS USING A DYNAMIC WALL SIMULATOR
(University of Kansas, 2009-12-23)ABSTRACT This thesis presents the results of an experimental study to determine the optimum placement and the thermal performance of a Phase Change Materials (PCMs) thermal shield incorporated into frame wall insulation ... -
The Growth Trend of the Chinese Construction Industry: When it will Surpass the U.S. Construction Industry
(University of Kansas, 2009-09-21)U.S. architectural, engineering and construction (AEC) firms doing business in China are minimally successful because they are unfamiliar with the Chinese market. To assist the U.S. AEC firms to become more competitive in ... -
Active Ankle Response for a 2-D Biped Robot with Terrain Contact Sensing
(University of Kansas, 2009-11-18)This investigation explored the possibility of controlling a biped robot in the lateral direction as well as sensing terrain properties. A literature review was conducted to learn from and build off of previous research. ... -
Simulating Challenges to Communication Networks for Evaluation of Resilience
(University of Kansas, 2009-07-31)This thesis is focused on the issues and challenges confronted by real network topologies. The goal of this thesis is to lead towards tools that permit network design to be as resilient as possible. In this thesis, a new ... -
Development and Construction of Low-Cracking High-Performance Concrete (LC-HPC) Bridge Decks: Construction Methods, Specifications, and Resistance to Chloride Ion Penetration
(University of Kansas, 2009-08-22)The development, construction, and evaluation of Low-Cracking High-Performance Concrete (LC-HPC) bridge decks are described based on laboratory test results and experiences gained through the construction of 14 LC-HPC ...