Engineering Dissertations and Theses: Recent submissions
Now showing items 101-120 of 1055
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Performance Evaluation of Virgin and Recycled Aggregate Bases Stabilized with Geotextiles
(University of Kansas, 2018-12-31)Virgin granular base (VGB) is currently the most widely-used base course material for roadway construction. As VGB in high demand, alternative materials, such as recycled concrete aggregate (RCA), have been increasingly ... -
A Bayesian Network-based Decision Framework for Selecting Project Delivery Methods in Highway Construction
(University of Kansas, 2018-05-31)Transportation agencies currently have several options in delivering their highway construction projects. Selecting an appropriate project delivery method (PDM) is a complex decision-making process. Researchers and ... -
Intelligent Guidance, Navigation and Control of Multi-Agent UASs with Validation and Verification
(University of Kansas, 2018-05-31)Following the exponential growth in the usage of unmanned aerial systems (UASs) across the Aerospace Industry, more intelligent and robust guidance, navigation, and control algorithms are vital to cope with increasing ... -
Bayesian-based Finite Element Model Updating, Damage Detection, and Uncertainty Quantification for Cable-stayed Bridges
(University of Kansas, 2018-12-31)Long-span bridges are important components of civil infrastructure systems because they are vital links in transportation systems. Therefore, as bridge systems age, understanding the safety and serviceability performance ... -
C-H Activation by Ozone in Liquid CO2 Using Cyclohexane and Iso-octane as Substrates
(University of Kansas, 2018-12-31)The study of cyclohexane and isooctane activation by ozone with liquid CO2 as reaction medium in a Parr reactor equipped with in situ infrared detector demonstrated a facile and efficient method for alkane activation. The ... -
Hydrogel with Selective Absorption for Separation of Liquid Mixtures
(University of Kansas, 2018-12-31)Separation of liquid mixtures is crucial in many industries including petrochemicals, mining, leather, food, steel and metal processing. Conventional separation technologies such as distillation and liquid-liquid extraction ... -
Monitoring Fatigue Cracks in Steel Bridges using Advanced Structural Health Monitoring Technologies
(University of Kansas, 2018-12-18)Fatigue cracks that develop in steel highway bridges under repetitive traffic loads are one of the major mechanisms that degrades structural integrity. If bridges are not appropriately inspected and maintained, fatigue ... -
Learning to Measure: Distance Metric Learning with Structured Sparsity
(University of Kansas, 2018-05-31)Many important machine learning and data mining algorithms rely on a measure to provide a notion of distance or dissimilarity. Naive metrics such as the Euclidean distance are incapable of leveraging task-specific information, ... -
Polyelectrolyte Complex Stabilized Supercritical CO2 Foam Systems Used for Hydraulic Fracturing Applications
(University of Kansas, 2017-12-31)The objective of this research is to develop polyelectrolyte complex nanoparticles capable of stabilizing surfactant-generated supercritical CO2 foam systems prepared for hydraulic fracturing applications. The polyelectrolyte ... -
Evaluation and Design of Wicking Geotextile for Pavement Applications
(University of Kansas, 2017-12-31)Geotextiles are often included in roadway structures as substituting drainage layers for gravel or sand drainage layers. When water infiltrates through pavements and enters base courses, it increases water content of base ... -
Simulation of Hydraulic Fracturing Fluid Cleanup for Partially Degraded Fracturing Fluids in Unconventional Gas Reservoirs
(University of Kansas, 2017-08-31)Abstract Unconventional reservoirs are low porosity and low permeability reservoirs (<0.1md), usually requiring enhanced stimulation techniques such as hydraulic fracturing and horizontal drilling to increase the contact ... -
An Approach to Bridge Inspection Using 3D Laser Scanners and Digital Photographs
(University of Kansas, 2017-08-31)Bridges are an integral component of infrastructure systems, which play a critical role in the development of the economy, society, and national security. However, bridges have not received adequate care and are deteriorating ... -
Advances in Islet Transplantation Including Development of a Novel Cell Encapsulation Platform for the Treatment of Diabetic Pets
(University of Kansas, 2017-04-31)Islet transplantation as a treatment for type-1 diabetes in humans has reached a plateau, and major breakthroughs in stem-cell based therapies and immunoprotection strategies are now needed to advance the field. The primary ... -
Radiographic Imaging and Finite Element Modeling Methods for Analysis of the Basilar Thumb Joint
(University of Kansas, 2018-12-31)Laxity of the stabilizing ligaments, specifically the anterior oblique ligament (AOL) and the dorsoradial ligament (DRL), is believed to play a major role in the development of osteoarthritis (OA) of the basilar thumb ... -
EMERGING TECHNOLOGIES & THEIR ADOPTION ACROSS US DOT'S: A PURSUIT TO OPTIMIZE PERFORMANCE IN HIGHWAY INFRASTRUCTURE PROJECT DELIVERY
(University of Kansas, 2018-12-31)In the transportation construction industry, emerging technologies have changed how state departments of transportation (DOTs) deliver highway construction projects. New and innovative technologies continue to be introduced, ... -
Episodic Memory: Foundation of Explainable Autonomy
(University of Kansas, 2018-12-31)In recent years, the inner workings of many intelligent agents have become opaque to users who wish to manage or collaborate with them. This lack of transparency makes it difficult for human users to understand and predict ... -
Phase Equilibria of Imidazolium-based Ionic Liquids and Water
(University of Kansas, 2018-12-31)Ionic liquids (ILs) are widely investigated materials due to their green properties including negligible vapor pressure, chemical tunability, and high temperature stability. The presence of water in ionic liquids has been ... -
Understanding Memory Access Behavior for Heterogeneous Memory Systems
(University of Kansas, 2018-12-31)Present day manufacturers have invented different memory technologies with distinct bandwidth, energy and cost trade-offs. Systems with such heterogeneous memory technologies can only achieve the best performance and power ... -
Model Predictive Control of Impedance Source Inverter for Photovoltaic Applications
(University of Kansas, 2018-12-31)A model predictive controlled power electronics interface (PEI) based on impedance source inverter for photovoltaic (PV) applications is proposed in this disssertation. The proposed system has the capability of operation ... -
The Cause of Inorganic Compounds from Auto-flocculated Algal Solids and Their Effect on the Solid and Biocrude Products of Conventional Hydrothermal Liquefaction
(University of Kansas, 2018-12-31)The recent increase in demand for more sustainable and renewable alternatives to both energy and other commercial products has given rise to a modern bioeconomy. With advances in the life sciences, various biomass resources ...