Engineering Dissertations and Theses: Recent submissions
Now showing items 841-860 of 1055
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Development and Validation of an Analogue Lumbar Spine Model and its Integral Components
(University of Kansas, 2011-04-25)There is a large need for an anatomically and mechanically correct model of the human lumbar spine. Such a model could have widespread use in the development of new implants and surgical procedures designed to remediate ... -
ATMOSPHERIC DENSITY ESTIMATION USING SATELLITE PRECISION ORBIT EPHEMERIDES
(University of Kansas, 2011-04-22)The current atmospheric density models are not capable enough to accurately model the atmospheric density, which varies continuously in the upper atmosphere mainly due to the changes in solar and geomagnetic activity. ... -
characterization and visualization of two-phase flow properties of gas diffusion layers used in a PEM fuel cell
(University of Kansas, 2011-04-26)Due to the low-temperature operation of Polymer Electrolyte Membrane fuel cell (PEMFC), liquid water can build up in either flow channels or gas diffusion layers (GDL). Better understanding of the effect of two-phase ... -
MRI T2 RELAXATION TIME EVALUATION OF WRIST CARTILAGE WITH SCAPHOLUNATE LIGAMENT INJURY IN THE PRE-OPERATIVE AND POST-OPERATIVE STATE
(University of Kansas, 2011-04-27)The overall goal of this research was to develop a method to non-invasively assess the cartilage of subjects exhibiting unilateral scapholunate dissociation. The research was completed with the hope of identifying the ... -
A Hardware Implementation of a Coherent SOQPSK-TG Demodulator for FEC Applications
(University of Kansas, 2011-03-31)This thesis presents a hardware design of a coherent demodulator for shaped offset quadrature phase shift keying, telemetry group version (SOQPSK-TG) for use in forward error correction (FEC) applications. Implementation ... -
MAPPING THE ANKLE JOINTS PASSIVE MOTION AND MEASURING THE EFFECT OF INJURY ON LIGAMENT CONSTRAINT AT THE ANKLE JOINT
(University of Kansas, 2011-02-04)Lateral ankle sprain is one of the most common sports injuries, and having a better understanding of how ligament constraint changes after injury can assist in accurately diagnosing ankle laxity, prevention, and recovery. ... -
An Analytical Evaluation of Distortion-Induced Fatigue in Steel Bridges
(University of Kansas, 2011-02-04)Multi-girder steel bridges designed prior to the mid-1980's, have developed cracks due to distortion-induced fatigue. An analytical evaluation was conducted to better understand the effects of bridge configurations and ... -
A MACHINE LEARNING APPROACH TO QUERY TIME-SERIES MICROARRAY DATA SETS FOR FUNCTIONALLY RELATED GENES USING HIDDEN MARKOV MODELS
(University of Kansas, 2011-02-04)Microarray technology captures the rate of expression of genes under varying experimental conditions. Genes encode the information necessary to build proteins; proteins used by cellular functions exhibit higher rates of ... -
Investigation of Pulsed Electric Field (PEF) as an Intensification Pretreatment for Solvent Lipid Extraction from Microalgae, utilizing Ethyl Acetate as a Greener Substitute to Chloroform-based Extraction
(University of Kansas, 2011-02-16)As a crucial alternative to petroleum liquid fuels and first generation biodiesel, microalgae represent the most promising renewable source of lipids, thought to be capable of meeting global transportation fuel needs. The ... -
COMPUTATIONAL SIMULATION OF SCRAMJET COMBUSTORS - A COMPARISON BETWEEN QUASI-ONE DIMENSIONAL AND 2-D NUMERICAL SIMULATIONS
(University of Kansas, 2011-01-26)1-D simulations based on the quasi-one-dimensional equations of fluid motion plus an ignition delay model and 2-D numerical simulations based on Reynolds-Averaged Navier-Stokes (RANS) equations have been performed for two ... -
Development of mathematical models and mathematical, computational framework for multi-media interaction processes
(University of Kansas, 2011-01-11)This thesis presents development of mathematical models for multi-media interaction process using Eulerian description and associated computational infrastructure to obtain numerical solution of the initial value problems ... -
Performance of Multiple Corrosion Protection Systems for Reinforced Concrete Bridge Decks
(University of Kansas, 2011-01-18)The performance of corrosion protection systems for reinforcing steel in concrete is evaluated. In addition to conventional and conventional epoxy-coated reinforcement, the corrosion protection systems tested include epoxy ... -
NEUROMOTOR RESPONSE TO WHOLE BODY VIBRATION TRANSMISSIBILITY IN THE HORIZONTAL DIRECTION AND ITS MATHEMATICAL MODEL
(University of Kansas, 2010-09-02)Recent studies of whole body vibration in seated postures have suggested that the neuromotor system may play a role in the etiology of low back disorders. A number of researchers have modeled whole body vibration transmission ... -
Finite Element Study on Bridge Details Susceptible to Distortion-Induced Fatigue
(University of Kansas, 2010-12-00)Some bridges designed prior to the mid 1980s have experienced problems in the web-gap region, above plates connecting intermediate stiffeners to the girder web and below girder top flanges, due to differential deflections ... -
COUPLING CONSTRAINT BOUNDARY MAPPING IN THE PROCESS DESIGN PARAMETER SPACE WITH COMMERCIAL PROCESS SIMULATOR TO ESTIMATE PROCESS DESIGN RELIABILITY
(University of Kansas, 2010-01-25)Chemical process designs include safety factors to compensate for inherent parameter uncertainty in the design process. These safety factors require additional capital and operating expenses. Since these factors are based ... -
Assessing the Ecological Condition of Wetlands in the Lower Missouri River Floodplain
(University of Kansas, 2010-01-28)Changes to the hydrology of the Missouri River and its associated floodplain have dramatically reduced historic flooding cycles, thereby reducing wetland area as well as the ecological integrity of remaining wetlands. This ... -
Design of Vitrification Machine
(University of Kansas, 2009-11-30)Cryopreservation of living cells and biological material by vitrification requires the expertise of a skilled lab technician and a large amount of time. Vitrification must be performed one sample at a time on tiny subjects, ... -
Numerical Simulation/Analysis and Computer Aided Engineering for Virtual Protyping of Heavy Ground Vehicle
(University of Kansas, 2010-08-26)This doctoral project dissertation deals with the investigation of simulation/analysis in the product development process of specialized heavy ground vehicle engineering which posts some of the most challenging engineering ... -
USE OF COMPOSITE MATERIALS TO REPAIR STEEL STRUCTURES VULNERABLE TO FATIGUE DAMAGE
(University of Kansas, 2010-01-01)This study investigates mainly two different topics related to the use of CFRP's for strengthening and repair of steel bridges: the use of CFRP's to prevent damage in fatigue vulnerable welded connections prior to fatigue-crack ... -
Airborne UHF Radar for Fine Resolution Mapping of Near Surface Accumulation Layers in Greenland and West Antarctica
(University of Kansas, 2010-11-01)The usefulness of accurate, fine resolution accumulation layer measurements over central Greenland and West Antarctica is significant for the improvement of ice sheet models. These models are critical to both global climate ...