Engineering Dissertations and Theses: Recent submissions
Now showing items 461-480 of 1055
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A FINITE-ELEMENT-BASED APPROACH TO MODELING CRACKING & REPAIRS FOR DISTORTION-INDUCED FATIGUE IN STEEL BRIDGES
(University of Kansas, 2015-08-31)Distortion-induced fatigue damage is a common problem in steel girder bridges built prior to the mid-1980s.The University of Kansas has studied and developed several retrofit techniques with an aim to determine the efficacy ... -
SafeExit: Exit Node Protection for TOR
(University of Kansas, 2015-08-31)TOR is one of the most important networks for providing anonymity over the internet. However, in some cases its exit node operators open themselves up to various legal challenges, a fact which discourages participation in ... -
Partially Constrained Adaptive Beamforming
(University of Kansas, 2015-08-31)The ReIterative Super-Resolution (RISR) was developed based on an iterative implementation of the Minimum Mean Squared Error (MMSE) estimator. Here, a novel approach to direction of arrival estimation, partially constrained ... -
Investigations of degradation in LNT catalysts systems: from noble metal to novel perovskite materials
(University of Kansas, 2015-12-31)The reduction in emissions from mobile and stationary sources has become a global priority. With the impacts of global warming already being felt, all avenues for reduction in greenhouse gas emissions are being investigated. ... -
A New Semi-Analytical Lag-Time Equation for Applications in the Kansas City Metropolitan Area
(University of Kansas, 2015-12-31)Hydrologic methods that relate peak discharge to storm rainfall require as inputs time parameters that describe how fast the watershed responds to rainfall events. Two of these parameters are lag time (TL) and time of ... -
SYNTHESIS AND CHARACTERIZATION OF CARBON-SUPPORTED RHODIUM SULFIDE CATALYST
(University of Kansas, 2015-08-31)Hydrogen-Bromine (H2-Br2) flow battery system is an attractive option for electrochemical energy storage due to its high round-trip energy conversion efficiency, high power density and storage capacity, fast kinetics of ... -
A Wideband Direction of Arrival Technique for Multibeam, Wide-Swath Imaging of Ice Sheet Basal Morphology
(University of Kansas, 2015-08-31)Multichannel, ice sounder data can be processed to three-dimensionally map ice sheet bed topography and basal reflectivity using tomographic imaging techniques. When ultra-wideband (UWB) signals are used to interrogate a ... -
MODELING AND EXPERIMENTAL STUDIES TO OPTIMIZE THE PERFORMANCE OF A HYDROGEN – BROMINE FUEL CELL
(University of Kansas, 2015-08-31)The regenerative Hydrogen-Bromine (H2-Br2) fuel cells are considered to be one of the viable systems for large scale energy storage because of their high energy conversion efficiency, flexible operation, highly reversible ... -
Protection of Buried Flexible Pipes with a Geosynthetic: Experimental and Numerical Studies
(University of Kansas, 2015-12-31)Geosynthetic materials have been used in a wide variety of ways to enhance the performance of buried pipes and conduits. Attenuation of surface loads to protect the pipe include methods such as induced trenches, soil ... -
Improved Atmospheric Density Estimation for ANDE-2 Satellites using Drag Coefficients Obtained from Gas-Surface Interaction Equations
(University of Kansas, 2015-12-31)A major issue in the process of predicting the future position of satellites in low earth orbit (LEO) is that the drag coefficient of a satellite is generally not precisely known throughout the satellite’s lifespan. One ... -
Robust Optimal and Adaptive Pulse Compression for FM Waveforms
(University of Kansas, 2015-12-31)The least-squares mismatched filter (LS MMF) is a pulse compression method used to suppress range sidelobes. This work provides a description of the adjustments needed such that the LS MMF, initially derived for codes, can ... -
USBWall: A Novel Security Mechanism to Protect Against Maliciously Reprogrammed USB Devices
(University of Kansas, 2015-12-31)Universal Serial Bus (USB) is a popular choice of interfacing computer systems with peripherals. With the increasing support of modern operating systems, it is now truly plug-and-play for most USB devices. However, this ... -
Nonlinear Waves in Solid Continua with Finite Deformation
(University of Kansas, 2015-12-31)This work considers initiation of nonlinear waves, their propagation, reflection, and their interactions in thermoelastic solids and thermoviscoelastic solids with and without memory. The conservation and balance laws ... -
Three-dimensional Stem Cell Aggregates for Cartilage Tissue Engineering
(University of Kansas, 2015-12-31)Osteoarthritis is the degradation of the knee cartilage within the joints that is often painful and can be debilitating and affect movement, thus impacting the overall quality of life. Current approved treatment methods ... -
CORRELATIONS BETWEEN COMPRESSIVE, FLEXURAL, AND TENSILE BEHAVIOR OF SELF-CONSOLIDATING FIBER REINFORCED CONCRETE
(University of Kansas, 2015-12-31)Self-consolidating fiber reinforced concrete (SCFRC) is a hybrid concrete that is both self-compacting and fiber reinforced. Use of SCFRC in reinforced concrete members has been shown to result in improved behavior under ... -
On-Track Testing as a Validation Method of Computational Fluid Dynamic Simulations of a Formula SAE Vehicle
(University of Kansas, 2015-05-31)This thesis is about the validation of a computational fluid dynamics simulation of a ground vehicle by means of a low-budget coast-down test. The vehicle is built to the standards of the 2014 Formula SAE rules. It is ... -
Investigating Occupational Factors Linked to Back Pain: Repetitive Lifting Strategies and a Method for Examining Effects of Vibration
(University of Kansas, 2015-05-31)Low back pain results in a significant burden to industrial nations worldwide from the medical costs and the loss of work productivity. The objective of the current work was to investigate repetitive lifting with high torso ... -
Altered Recovery Process after Fatiguing Exercise and Potential Benefits of Qigong in Patients with Fibromyalgia
(University of Kansas, 2015-05-31)Abstract Introduction: Fibromyalgia (FM) is a challenging disorder to explore and warrants further study. This study aimed to determine if the recovery process after isometric fatiguing contractions is altered and if Qigong ... -
Mixing Enhancement in a Scramjet Combustor Using Fuel Jet Injection Swirl
(University of Kansas, 2015-05-31)The scramjet engine has proven to be a viable means of powering a hypersonic vehicle, especially after successful flights of the X-51 WaveRider and various Hy-SHOT test vehicles. The major challenge associated with operating ... -
HYDROTHERMAL LIQUEFACTION OF MUNICIPAL WASTEWATER CULTIVATED ALGAE: INCREASING OVERALL SUSTAINABILITY AND VALUE STREAMS OF ALGAL BIOFUELS
(University of Kansas, 2015-05-31)The forefront of the 21st century presents ongoing challenges in economics, energy, and environmental remediation, directly correlating with priorities for U.S. national security. Displacing petroleum-derived fuels with ...