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Dissertations and Theses: Recent submissions
Now showing items 1781-1800 of 9900
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EFFECT OF CRACK-REDUCING TECHNOLOGIES AND SUPPLEMENTARY CEMENTITIOUS MATERIALS ON SETTLEMENT CRACKING OF PLASTIC CONCRETE AND DURABILITY PERFORMANCE OF HARDENED CONCRETE
(University of Kansas, 2019-12-31)ABSTRACT The effects of crack-reducing technologies and supplementary cementitious materials on plastic settlement cracking and the durability of concrete subjected to freezing and thawing were evaluated. The study of ... -
Modeling of Compression Ignition Engines for Advanced Engine Operation and Alternative Fuels by the Second Law of Thermodynamics
(University of Kansas, 2019-12-31)With the advent of modern engine control strategies, and particularly electronic common-rail injection, the scope and scale of what is achievable and controllable in compression-ignition engines has exploded quite rapidly ... -
Thermodynamic Consistency of the currently used Beam Mathematical Models and Thermodynamically Consistent New Formulations for Bending of Thermoelastic, and Thermoviscoelastic Beams
(University of Kansas, 2019-12-31)In order to enhance currently used beam mathematical models in R^2 and R^3 to include mechanisms of dissipation and memory, it is necessary to establish if the mathematical models for these theories can be derived using ... -
Estimating the Effect of Connected and Autonomous vehicles (CAVs) on Capacity and Level of Service at Freeway Merge Segments
(University of Kansas, 2019-12-31)The aim of the study was to obtain Capacity adjustment factors and Break points which can be utilized for Highway Capacity Manual (HCM6) methodology in obtaining Level of Service for freeways when Connected and Autonomous ... -
Power amplification via compliant layer interdigitation and dielectrophoretic structuring of PZT particle composites
(University of Kansas, 2019-12-31)Nonunion occurs in up to 10% of all fractures, with about 8% of all femoral fractures ending in nonunion, or failed healing with current fixation methods1,2. These failure rates can be caused by factors such as diabetes, ... -
Performance and Emissions of ASTM-Approved Alternative Jet Fuels in Compression Ignition Engines
(University of Kansas, 2019-12-31)The use of aviation fuels in compression ignition engines rose from the single forward fuel policy (SFFP) that mandated all vehicles at military bases be operated on JP-8. Since CI engines are designed to operate on diesel ... -
Using deep learning methods for supervised speech enhancement in noisy and reverberant environments
(University of Kansas, 2019-12-31)In real world environments, the speech signals received by our ears are usually a combination of different sounds that include not only the target speech, but also acoustic interference like music, background noise, and ... -
Mitigation of Metal Dust Deflagrations via Thermal Analysis and Active Explosion Suppression
(University of Kansas, 2019-12-31)Explosions induced by ignition of combustible metal powders continue to present a significant threat to metal handling and refining industries. Addition of non-combustible inert material to combustible dust mixtures, either ... -
Catalyst Development for Electrochemical Water Splitting
(University of Kansas, 2019-12-31)The world population is growing at a rate untenable for our current energy resources to keep up with. This combined with the factors of depleting nonrenewable energy sources, i.e. fossil fuels, and environmental impacts ... -
Evaluation of Cement-Modified Soil (CMS) with Microcracking and Its Effects on Flexible Pavement Performance
(University of Kansas, 2019-12-31)Cement modification of subgrade has been widely practiced for the past few decades. Recently, cement has become a more economical binder to modify in-situ subgrade soil since other binders, such as fly ash, have become ... -
Phase Behavior of Binary Ionic Liquid Systems: Ionic Liquids with Ammonia, Carbon dioxide, and Dihydroxy Alcohols
(University of Kansas, 2019-12-31)Solvents play a crucial role in industrial processes, which might directly or indirectly have a bearing on the environment. As engineers and scientists, our goal is to advance or develop more sustainable chemicals to ... -
Digital Compensation of Transmission Impairments in Multi-Subcarrier Fiber Optic Transmission Systems
(University of Kansas, 2019-12-31)Time and again, fiber optic medium has proved to be the best means for transporting global data traffic which is following an exponential growth trajectory. Rapid development of high bandwidth applications since the past ... -
Prevention of Medical Implant Infection through Self-Assembled Engineered Peptides as Surface Active Bio-Agents
(University of Kansas, 2019-12-31)Titanium medical implants have revolutionized health care in treating bone and joint degeneration, neoplasms and inflammation. Due to their biocompatibility, mechanical strength, and non-corrosive properties, titanium and ... -
Optimization for Training Deep Models and Deep Learning Based Point Cloud Analysis and Image Classification
(University of Kansas, 2019-12-31)Deep learning (DL) has dramatically improved the state-of-the-art performances in broad applications of computer vision, such as image recognition, object detection, segmentation, and point cloud analysis. However, the ... -
Real-time DSP-enabled digital subcarrier cross-connect (DSXC) for optical communication networks
(University of Kansas, 2019-12-31)Elastic optical networking (EON) is intended to offer flexible channel wavelength granularity to meet the requirement of high spectral efficiency (SE) in today’s optical networks. However, optical cross-connects (OXC) and ... -
Implementing SoftBound on Binary Executables
(University of Kansas, 2019-12-31)Though languages like C and C++ are known to be memory unsafe, they are still used widely in industry because of their memory management features, low level nature and performance benefits. Also, as most of the systems ... -
From apartheid to democracy: Shifting news values of journalists at the “Sunday Times” newspaper
(University of Kansas, 2009-05-31)This study explores the news values of journalists at the Sunday Times newspaper in South Africa. Of particular interest are the values espoused under the apartheid era and whether these values changed with the resultant ... -
Juror perceptions of witness credibility as a function of linguistic and nonverbal power
(University of Kansas, 1992-05-31)While the effects of linguistic power on witness credibility in the courtroom as well as preliminary studies of the effects of nonverbal power on witness credibility have been studied, no research has focussed on manipulations ... -
Mechanisms of Condensed Phase Reactions: The Role of Structure, Dynamics, and Environment in Photoisomerization and Photodissociation
(University of Kansas, 2019-08-31)Light-activated chemistry begins with the excitation of a ground-state molecule to a higher-lying excited state. Once in the excited state, the nuclei in the molecule respond by trying to minimize the energy of the system. ... -
Wettability Alteration of Carbonate Rocks by Polyelectrolyte Complex Nanoparticles
(University of Kansas, 2019-12-31)More than fifty percent of oil reservoirs around the world are carbonate reservoirs. Oil recovery from carbonates requires closer attention due to the heterogeneity of the rock and its wettability system. A majority of ...