Engineering Dissertations and Theses: Recent submissions
Now showing items 901-920 of 1055
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CPM-Based Radar Waveforms for Efficiently Bandlimiting a Transmitted Spectrum
(University of Kansas, 2010-04-20)In this thesis it shall be demonstrated how a polyphase-coded radar waveform can be implemented using a continuous phase modulation (CPM) framework so as to achieve spectral containment while maintaining a constant envelope ... -
Design of an Automatic Landing System for the Meridian UAV using Fuzzy Logic
(University of Kansas, 2010-04-22)This document describes the design of an automatic landing system for the Meridian unmanned aerial vehicle (UAV) in development for glacial ice research. The Center for Remote Sensing of Ice Sheets (CReSIS), established ... -
An Investigation into Satellite Drag Modeling Performance
(University of Kansas, 2010-03-23)The errors in current atmospheric drag modeling are the primary source of error for orbit determination for objects in low Earth orbit (LEO) at lower altitudes in periods of high solar activity. This is a direct result of ... -
Fatigue Enhancement of Undersized, Drilled Crack-Stop Holes
(University of Kansas, 2010-04-20)A common technique used to prevent the propagation of cracks in bridge girders is drilling crack-stop holes at the crack tips. By doing so, stress concentrations at the tip of the cracks are reduced and fatigue life of the ... -
Synthesis Gas Conversion to Aliphatic Alcohols: Study of MoS2 catalytic systems
(University of Kansas, 2010-04-19)The recent energy debate and demand for renewable fuels has intensified research activities for conversion of biomass derived feedstocks to fuels and fuel additives. Synthesis of ethanol and higher aliphatic alcohols from ... -
Mixed Ionic/Electronic Conducting Ceramic Membranes for Oxygen-Assisted CO2 Reforming
(University of Kansas, 2010-03-29)Incorporating a SrFeCo0.5Ox (SFC) membrane into a CO2 reforming reactor doubles methane conversion with a powder Pt/ZrO2 catalyst. The deactivation of both Pt/ZrO2 and a Pt/CeZrO2 catalyst is also retarded substantially. ... -
Synthesis and Characterization of Hydrogels Based on Poly (N-vinyl formamide)
(University of Kansas, 2010-04-27)It is important to synthesize gels with lower toxicity and higher processibility to widen their applications. In this regard, the monomer N-vinyl formamide has an advantage over its widely used isomer acrylamide. A novel ... -
Plastic Hinging Behavior of Reinforced Concrete Bridge Columns
(University of Kansas, 2010-04-27)The location of inelastic deformations in reinforced concrete bridge columns has been examined to simulate the nonlinear response of bridge columns and estimate the ultimate displacement capacity. In bridge columns, these ... -
SIZEUP: A TOOL FOR INTERACTIVE COMPARATIVE COLLECTION ANALYSIS FOR VERY LARGE SPECIES COLLECTIONS
(University of Kansas, 2009-04-28)The research breadth and depth of biological collections varies widely among museums and herbaria. As of this writing, there is no method to perform large scale visualization, and comparison amongst biological collections ... -
Linearization using Digital Predistortion of a High-Speed, Pulsed, Radio Frequency Power Amplifier for VHF Radar Depth-Sounder Systems
(University of Kansas, 2010-03-29)Depth-sounding radar systems provide the scientific data that are useful in modeling polar ice sheets and predicting sea-level rise. These radars are typically deployed on crewed aircraft; however, crewed missions over ... -
HOMOGENEOUS CATALYSIS AND MASS TRANSFER IN BIPHASIC IONIC LIQUID SYSTEMS WITH COMPRESSED CO2 AND ORGANIC COMPOUNDS
(University of Kansas, 2010-2-24)ABSTRACT Homogeneous catalysis in which the catalyst, solvents and reactants are all in the same phase can yield high activity and selectivity and efficiently produce chemical products. However, the main problem with these ... -
Design and Development of an Amplitude Leveling Subsystem for FM Radars
(University of Kansas, 2010-04-14)To better understand contributions of large ice sheets to sea level rise, remote sensing radars are used to measure relevant characteristics. The Center for Remote Sensing of Ice Sheets (CReSIS) at the University of Kansas ... -
Electro-mechanical characterization of piezo-metallic cellular solids for spine implants
(University of Kansas, 2010-04-15)Abstract Many different electrical stimulation methods are currently used to enhance bone growth in spine fusion. In this study, the feasibility of a novel electrical stimulation method using piezoelectric materials embedded ... -
Planning, Execution, and Analysis of the Meridian UAS Flight Test Program Including System and Parameter Identification
(University of Kansas, 2010-04-27)The purpose of this Master Thesis is to present the flight test procedures, planning, and analysis including system identification, parameter identification, and drag calculations of the Meridian UAS. The system identification ... -
Effect of Materials and Curing Period on Shrinkage of Concrete
(University of Kansas, 2010-02-04)The ASTM C157 free shrinkage test is used to evaluate the effects of mix proportioning parameters and curing on concrete shrinkage with the goal of providing recommendations that will reduce concrete shrinkage in bridge ... -
Evaluation of Multiple Corrrosion Protection Systems and Corrosion Inhibitors for Reinforced Concrete Bridge Decks
(University of Kansas, 2010-05-10)The corrosion performance of different corrosion protection systems is evaluated using the mortar-wrapped rapid macrocell test, bench-scale tests (the Southern Exposure, cracked beam, and ASTM G109 tests), and field tests. ... -
A Combined Experimental-Computational Method to Generate Reliable Subject Specific Models of the Knee's Ligamentous Constraint
(University of Kansas, 2009-07-10)With the advancement of computational models of the knee, the opportunity exists to utilize patient-specific computational models of the knee intra-operatively to assist surgeons. A critical component for evaluation of ... -
Friend Lens: Novel Web Content Sharing through Strategic Manipulation of Cached HTML
(University of Kansas, 2010-02-12)Content sharing has become a part our everyday lives. There are many forms for content sharing. Current methods of content sharing include blogs, Facebook, and Clip Marks. Content can be authored by users or taken from ... -
An Analytical and Experimental Investigation of Potential Mechanical Work Extraction from Supersonic Jet Flow on High Speed Mini Turbines
(University of Kansas, 2010-01-25)In the present study, an inexpensive method of mechanical power extraction from supersonic jets was investigated. Detailed experiments were carried out to measure the mechanical torque generated by a 45o planar bladed ... -
Advanced Text Searching of Electronic Information Related to Forensic Discovery
(University of Kansas, 2009-12-07)The Federal Rules of Civil Procedure regarding production of electronic evidence, together with court rulings and penalties, have highlighted the need for timely and accurate production of electronically stored responsive ...