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Effects Of Spanwise And Discrete Disturbances On Separating Boundary Layers On Low Pressure Turbine Blades, Daniel D. Reimann Mar 2007

Effects Of Spanwise And Discrete Disturbances On Separating Boundary Layers On Low Pressure Turbine Blades, Daniel D. Reimann

Theses and Dissertations

Flow measurements were made on two highly loaded, low pressure turbine blade configurations in a low-speed, linear cascade facility. The L1M blade has a design Zweifel coefficient of 1.34 with a peak cp near 47% cx (mid-loaded) and the Pack B blade has a design Zweifel coefficient of 1.15 with a peak cp at 63% cx (aft-loaded). Flow velocity and surface pressure measurements were taken for Rec=20,000 and 3% inlet freestream turbulence. For these operating conditions, a large separation bubble forms on the blade suction surface, beginning at 59% cx and reattaching at 86% cx on the L1M blade and …

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Significant Trade Contractor Performance Characteristics As Evaluated By Big-D Construction, Conrad C. Johnson Mar 2007

Significant Trade Contractor Performance Characteristics As Evaluated By Big-D Construction, Conrad C. Johnson

Theses and Dissertations

The purpose of this research is to determine which aspects, other than price, of trade contractor performance are the most important to the general contractor, Big-D Construction. The impression a trade contractor leaves on the project manager and superintendent provides an indication of their performance. To determine what tasks trade contractors perform that most greatly impact overall perception of the general contractor's project manager and superintendent, hundreds of trade contractors were evaluated in ten separate categories and were then given an overall rating. The correlation between each category and the overall rating was found. The categories were then sorted from …

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Analyses Of Greater Sage-Grouse (Centrocercus Urophasianus) Translocation Release Methods And Chick Survival In Strawberry Valley, Utah, Jordan P. Hennefer Mar 2007

Analyses Of Greater Sage-Grouse (Centrocercus Urophasianus) Translocation Release Methods And Chick Survival In Strawberry Valley, Utah, Jordan P. Hennefer

Theses and Dissertations

Manuscript No. 1 Recent research has indicated that low nest success and juvenile survival of Greater Sage-Grouse may be responsible for population declines. Recent technological advances in micro-transmitters have made radio-telemetry studies on Sage-Grouse chicks more common. Radio-telemetry enables monitoring of individual chicks and broods during a critical period of their life history. The exact cause of low chick recruitment in Strawberry Valley has not been well understood. In 2006, a chick mortality study using micro-transmitters was initiated to (1) determine the causes of chick mortality, (2) calculate overall chick survival, (3) compare chick survival in the Strawberry Valley population …

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The Spirit In The Law Podcast: Testing The Democratization And Audience Behavior Of New Media Broadcasting, Scott Lin Lunt Mar 2007

The Spirit In The Law Podcast: Testing The Democratization And Audience Behavior Of New Media Broadcasting, Scott Lin Lunt

Theses and Dissertations

This project summary presents the details of a podcast project conducted from April to December of 2006. The project consisted of the creation of a new Internet-based audio interview show entitled Spirit In The Law. The interviews were delivered to listeners who requested the shows via the Internet, and were available to a targeted audience of law students in the United States and abroad. The show featured interviews with 20 notable attorneys and professionals who answered questions regarding spiritual values in their professional practice. The project was informed by two theoretical frameworks: New Media theory and Situational Theory of Publics. …

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Modeling Dissolved Oxygen In Lake Powell Using Ce-Qual-W2, Nicholas Trevor Williams Mar 2007

Modeling Dissolved Oxygen In Lake Powell Using Ce-Qual-W2, Nicholas Trevor Williams

Theses and Dissertations

Water quality models in the Colorado River Basin have been developed for the basin, river, and individual reservoirs. They are used to support water quality programs within the basin. The models are periodically reviewed and updated to improve the accuracy of simulations. Improving the usefulness of the Lake Powell model, one of the key reservoirs in the basin, is the subject of this study. Lake Powell is simulated using a hydrodynamic and water quality model, CE-QUAL-W2. Previously the model has been used at Lake Powell to simulate hydrodynamics, temperature, and total dissolved solids with a reasonable degree of accuracy. An …

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Characterizing The Frictional Interface In Friction Stir Welding, Daryl A. Stratton Mar 2007

Characterizing The Frictional Interface In Friction Stir Welding, Daryl A. Stratton

Theses and Dissertations

Quantitative understanding of frictional phenomena between the tool and the workpiece is essential for accurate modeling of the Friction Stir Welding (FSW) process. Two methods of measuring the tool-workpiece interface are proposed that allow frictional measurements to be made under extreme conditions. The first method uses a cylindrically curved surface in contact with a flat plate. The ranges of temperature, velocity, and normal force used in this method are 100–600°C, 0.38–2.0 m/s (75–400) surface feet per minute (SFM)), and 450–2700 N (100–600 lbf), respectively. Data are gathered at different parameter level combinations to provide enough data to create an empirical …

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A Leavening Effect In The Pacific: Intercultural Marriage At Byu-Hawaii, 1955-2007 Mar 2007

A Leavening Effect In The Pacific: Intercultural Marriage At Byu-Hawaii, 1955-2007

Mormon Pacific Historical Society

No abstract provided.

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Kalaupapa In Photos Mar 2007

Kalaupapa In Photos

Mormon Pacific Historical Society

No abstract provided.

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A Simulation-Based Approach For Evaluating Gene Expression Analyses, Carly Ruth Pendleton Mar 2007

A Simulation-Based Approach For Evaluating Gene Expression Analyses, Carly Ruth Pendleton

Theses and Dissertations

Microarrays enable biologists to measure differences in gene expression in thousands of genes simultaneously. The data produced by microarrays present a statistical challenge, one which has been met both by new modifications of existing methods and by completely new approaches. One of the difficulties with a new approach to microarray analysis is validating the method's power and sensitivity. A simulation study could provide such validation by simulating gene expression data and investigating the method's response to changes in the data; however, due to the complex dependencies and interactions found in gene expression data, such a simulation would be complicated and …

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A Qualitative Study Of Selected Quality Knowledge And Practices In Guangdong Province, China, Tyler R. Thomas Mar 2007

A Qualitative Study Of Selected Quality Knowledge And Practices In Guangdong Province, China, Tyler R. Thomas

Theses and Dissertations

The manufacturing industry has become very competitive in today's global market environment. Many US companies are faced with the choice of keeping their manufacturing domestic or looking to low cost off-shore countries to take advantage of the labor costs differences. To gain an understanding of the state of manufacturing in China, a major focus in the manufacturing world today, this thesis was undertaken. This thesis presents the findings of research conducted in Guangdong Province, China in June - July, 2005. This research addressed customer focus, leadership and general manufacturing and quality knowledge and practices of small, medium and large sized …

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Solute Chemistry And Isotopic Investigation Of The Groundwater Flow Paths In Honey Lake Basin, Lassen County, California And Washoe County, Nevada, Rachel M. Henderson Mar 2007

Solute Chemistry And Isotopic Investigation Of The Groundwater Flow Paths In Honey Lake Basin, Lassen County, California And Washoe County, Nevada, Rachel M. Henderson

Theses and Dissertations

Honey Lake Basin is a large, hydrologically closed valley with two playa lakes that are separated by a low elevation sill. The Basin has a complex hydrogeologic setting, with numerous groundwater flow paths that interact with surface waters and three basic aquifers; shallow, deep, and geothermal. Thirteen flow paths; eleven cold and two thermal, are identified and the geochemical evolution of those paths are characterized by integrating solute chemistry and isotopic data. The chemical flow paths include recharge in either granitoid or volcanic terrains in the Sierra Nevada Range and the Modoc Plateau, respectively. The groundwater then flows through alluvial …

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Calibration Procedure For A Microscopic Traffic Simulation Model, Carole Turley Mar 2007

Calibration Procedure For A Microscopic Traffic Simulation Model, Carole Turley

Theses and Dissertations

The inputs to a microscopic traffic simulation model generally include quantitative, but immeasurable data describing driver behavior and vehicle performance characteristics. Engineers often use default values for parameters such as car-following sensitivity and gap acceptance because it can be difficult to obtain accurate estimates for these parameters. While recent research has indicated that the accuracy of a simulation model can significantly improve if driver behavior parameters are calibrated to local data, this is not a typical practice. Manual calibration of these parameters is often too time-consuming to be cost-effective. Researchers have applied automated calibration procedures using genetic algorithms to these …

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On-Chip Atomic Spectroscopy, Donald B. Conkey Mar 2007

On-Chip Atomic Spectroscopy, Donald B. Conkey

Theses and Dissertations

This thesis presents the integration of atomic vapor cells with anti-resonant reflecting optical waveguides (ARROWs) fabricated on silicon chips. These potentially provide a compact platform for a number of optical applications, including the study of quantum coherence effects such as electromagnetically induced transparency and single-photon nonlinearities, as well as frequency stabilization standards. The use of hollow waveguides allows for light propagation in low index (vapor) media with compact mode areas. ARROWs make particularly attractive waveguides for this purpose because they can be interfaced with solid core waveguides, microfabricated on a planar substrate, and are effectively single mode. ARROW fabrication utilizes …

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Semi Autonomous Vehicle Intelligence: Real Time Target Tracking For Vision Guided Autonomous Vehicles, Jonathan D. Anderson Mar 2007

Semi Autonomous Vehicle Intelligence: Real Time Target Tracking For Vision Guided Autonomous Vehicles, Jonathan D. Anderson

Theses and Dissertations

Unmanned vehicles (UVs) are seeing more widespread use in military, scientific, and civil sectors in recent years. These UVs range from unmanned air and ground vehicles to surface and underwater vehicles. Each of these different UVs has its own inherent strengths and weaknesses, from payload to freedom of movement. Research in this field is growing primarily because of the National Defense Act of 2001 mandating that one-third of all military vehicles be unmanned by 2015. Research using small UVs, in particular, is a growing because small UVs can go places that may be too dangerous for humans. Because of the …

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Pre-Historic Landslides On The Southeast Flank Of The Uinta Mountains, Utah: Character And Causes Of Slope Failure, Todd D. Bradfield Mar 2007

Pre-Historic Landslides On The Southeast Flank Of The Uinta Mountains, Utah: Character And Causes Of Slope Failure, Todd D. Bradfield

Theses and Dissertations

More than 100 landslides have been mapped along the southeast flank of the Uinta Mountains. Large landslide deposits are up to 4.6 kilometers long and have an area of approximately 5-9 km². Landslide types include multiple and successive rock slumps, debris slumps and debris flows. Most landslides have a main head scarp in the Bishop Conglomerate and the large landslides have many minor scarps. Multiple slump blocks are manifest by repeated transverse ridges and trenches in the head area of some landslides. Most body and toe areas are deeply incised by gully erosion (up to 91 meters deep) and drainages …

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Ecology Of Culturable Organisms At Rozel Point, Great Salt Lake, Utah, Emily Sarah Haws Mar 2007

Ecology Of Culturable Organisms At Rozel Point, Great Salt Lake, Utah, Emily Sarah Haws

Theses and Dissertations

The study of organisms from extreme environments is an emerging field of research with applications to multiple scientific areas. One of these extreme environments is Great Salt Lake (GSL), whose microbiology has yet to be extensively studied. This dynamic and unique environment offers an excellent opportunity to increase understanding of hypersaline ecology. Cultivation of microorganisms remains an important part of ecology research, as it is essential for understanding microbial physiology. We report here the culturing and characterization of isolates from Rozel Point, located on the northeastern shore of Great Salt Lake. This site was chosen because of the presence of …

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Creation Of A Training And Development Program For Teachers Of Less Commonly Taught Languages At Brigham Young University: A Development Project, Margaret Merrill Mar 2007

Creation Of A Training And Development Program For Teachers Of Less Commonly Taught Languages At Brigham Young University: A Development Project, Margaret Merrill

Theses and Dissertations

This project report discusses the design, development, and evaluation of a teacher development program for teachers of less commonly taught languages in the Center for Language Studies (CLS) at Brigham Young University. Teachers hired to teach beginning language classes in the CLS are typically very proficient in the target languages, but are not trained in language teaching. Because proficiency in a language alone does not sufficiently qualify someone to teach it, this teacher development program was created to train CLS teachers in the basics of language pedagogy. The report includes a review of relevant literature on language pedagogy and teacher …

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Structure And Nitrogen Chemistry In Coal, Biomass, And Cofiring Low-Nox Flames, Bradley David Damstedt Mar 2007

Structure And Nitrogen Chemistry In Coal, Biomass, And Cofiring Low-Nox Flames, Bradley David Damstedt

Theses and Dissertations

Addressing global climate change will require increasing sustainable energy usage. Cofiring biomass fuels with coal for electrical power generation is an efficient, cost effective method of CO2 mitigation. This work is an experimental investigation of the flame structure and nitrogen chemistry differences occurring between coal, biomass and cofiring flames. A pilot-scale facility was fired with a dual-feed low-NOx burner capable of independently conveying 2 separate fuels unblended to the burner. Spatially detailed gas species measurements were made for 8 flames, including a coal, straw, finely ground straw, wood, and 4 straw/coal cofiring flames. Particle samples were also obtained from 5 …

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Structural Analysis Of Rock Canyon Near Provo, Utah, Laura Cardon Wald Mar 2007

Structural Analysis Of Rock Canyon Near Provo, Utah, Laura Cardon Wald

Theses and Dissertations

A detailed structural study of Rock Canyon (near Provo, Utah) provides insight into Wasatch Range tectonics and fold-thrust belt kinematics. Excellent exposures along the E-W trending canyon allow the use of digital photography in conjunction with traditional field methods for a thorough analysis of Rock Canyon's structural features. Detailed photomontages and geometric and kinematic analyses of some structural features help to pinpoint deformation mechanisms active during the canyon's tectonic history. Large-scale images and these structural data are synthesized in a balanced cross section, which is used to reconstruct the structural evolution of this portion of the range. Projection of surficial …

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Parameter Importance Of An Analytical Model For Transport In The Vadose Zone, Tanner Hans Bushnell Mar 2007

Parameter Importance Of An Analytical Model For Transport In The Vadose Zone, Tanner Hans Bushnell

Theses and Dissertations

The American Society of Testing and Materials (ASTM) has established a three tier risk-based corrective action (RBCA) program for cleaning up petroleum release sites, which is supported by the Environmental Protection Agency. RBCA programs make the cleanup of spill sites more efficient by requiring additional site information only when a more accurate risk assessment is needed. For spill sites that do not pass the first tier general assessment, a Tier 2 evaluation involving site specific information and screening level models to assess the potential risk must be conducted. Screening level models generally require site specific input parameters. To increase efficiency …

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A High-Resolution Microscopic Electrical Impedance Imaging Modality: Scanning Impedance Imaging, Hongze Liu Mar 2007

A High-Resolution Microscopic Electrical Impedance Imaging Modality: Scanning Impedance Imaging, Hongze Liu

Theses and Dissertations

Electrical impedance imaging is an imaging technique which has the capability of revealing the spatial distribution of the electrical impedance inside biological tissues. Classical electrical impedance imaging including Electrical Impedance Tomography (EIT) typically has low resolution. Advances in electrical impedance imaging typically involve methods that either increase image resolution or image contrast. This study investigates the possibility of the resolution improvement for electrical impedance imaging using motion, and presents a novel high-resolution and calibrated impedance imaging method called Scanning electrical Impedance Imaging (SII). SII uses an electrical probe held at a known voltage and scanned over a thin sample immersed …

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Joseph F.Merrill: Latter-Day Saint Commissioner Of Education, 1928-1933, Casey Paul Griffiths Mar 2007

Joseph F.Merrill: Latter-Day Saint Commissioner Of Education, 1928-1933, Casey Paul Griffiths

Theses and Dissertations

Joseph F. Merrill served as Church Commissioner of Education from 1928 to 1933, an era critical in the development of Latter-day Saint Education. During his tenure as commissioner several key developments occurred in Church education, among them the closing of most of the remaining Church academies, transfer of nearly all of Church junior colleges to State control, rapid expansion of the Church seminary system, and establishment of the first LDS Institutes of Religion. Merrill also initiated new efforts to encourage LDS educators to seek graduate-level education outside of Utah, and to bring religious scholarship to the teachers of the Church. …

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The Origins Of Four Paterae Of Malea Planum, Mars, Susan K. Larson Mar 2007

The Origins Of Four Paterae Of Malea Planum, Mars, Susan K. Larson

Theses and Dissertations

Malea Planum is a volcanic plain on the southern rim of Hellas Planitia, the largest impact basin on Mars. Four large circular structures on Malea Planum have traditionally been identified as paterae, or low relief, central vent volcanoes (Plescia and Saunders, 1979). A geologic map was constructed and new crater counts made to explore the ages and origins of the paterae. Amphitrites and Peneus Paterae have radial patterns of wrinkle ridges on their flanks and distinct summit calderas (95 km and 130 km across) with arcuate bounding scarps. In contrast, Malea and Pityusa Paterae are broad depressions with diameters greater …

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Culvert Hydraulics: Comparison Of Current Computer Models, Elizabeth Anne Thiele Mar 2007

Culvert Hydraulics: Comparison Of Current Computer Models, Elizabeth Anne Thiele

Theses and Dissertations

The hydraulic analysis of culverts is complicated when using hand calculations. Fortunately, several computer programs are available to assist in analyzing culvert hydraulics, some of which include HY-8, Fish X-ing, Broken-back Culvert Analysis Program (BCAP), Hydraflow Express, Culvert Master, Culvert, and Hydrologic Engineering Center River Analysis System (HEC-RAS). While all of these programs can simulate the behavior of flow through a culvert, slightly different methodologies are utilized among the programs to complete a full hydraulic analysis, resulting in different predictions for headwater depth, flow control, and outlet velocities. The purpose of this paper is to compare (1) the available hydraulic …

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Spot Friction Welding Of Ultra High-Strength Automotive Sheet Steel, Jack H. Sederstrom Mar 2007

Spot Friction Welding Of Ultra High-Strength Automotive Sheet Steel, Jack H. Sederstrom

Theses and Dissertations

Spot friction welding (SFW) was performed on ultra high strength steel (UHSS) steel sheet commonly used in automobile manufacturing. Alloys studied included DP780, DP780EG, DP980, and DF140T sheet steel of varying thickness from 1.2 mm to 1.4 mm. Welding was accomplished using a PCBN standard tool. Weld strengths were then compared to a proposed AWS standard. Initial hardness readings were taken in cross sectioned samples. Grain structure in a SFW is presented. Resistance spot welds were created in three steels. This study focuses on the strength of SFW joints as compared to traditional resistance spot welding (RSW) in welding like …

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Improving Machine Learning Through Oracle Learning, Joshua Ephraim Menke Mar 2007

Improving Machine Learning Through Oracle Learning, Joshua Ephraim Menke

Theses and Dissertations

The following dissertation presents a new paradigm for improving the training of machine learning algorithms, oracle learning. The main idea in oracle learning is that instead of training directly on a set of data, a learning model is trained to approximate a given oracle's behavior on a set of data. This can be beneficial in situations where it is easier to obtain an oracle than it is to use it at application time. It is shown that oracle learning can be applied to more effectively reduce the size of artificial neural networks, to more efficiently take advantage of domain experts …

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Development Of An Efficient Solar Powered Unmanned Aerial Vehicle With An Onboard Solar Tracker, Troy Dixon Tegeder Mar 2007

Development Of An Efficient Solar Powered Unmanned Aerial Vehicle With An Onboard Solar Tracker, Troy Dixon Tegeder

Theses and Dissertations

Methods were developed for the design of a solar powered UAV capable of tracking the sun to achieve maximum solar energy capture. A single-axis solar tracking system was designed and constructed. This system autonomously rotated an onboard solar panel to find the angle of maximum solar irradiance while the UAV was airborne. A microcontroller was programmed and implemented to control the solar tracking system. A solar panel and an efficient airframe capable of housing the solar tracking system was designed and constructed. Each of these subsystems was tested individually with either ground or flight tests. Ultimately, the final assembled system …

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Analysis Of Stacked Rotated Gratings, Gregory P. Nordin, P. C. Deguzman, J. Jiang Mar 2007

Analysis Of Stacked Rotated Gratings, Gregory P. Nordin, P. C. Deguzman, J. Jiang

Faculty Publications

We study the rigorous design and analysis of stacked rotated gratings (SRGs) for novel photonic devices. A concept of sampling frequency is proposed to systematically design SRGs. With the help of a rectangular sampling lattice, we extend the standard 3D rigorous coupled-wave analysis (RCWA) algorithm to the analysis of SRGs. The resultant SRG-RCWA algorithm can be used to exactly analyze SRGs that have grating parameters that match the Fourier expansion represented by the sampling lattice. SRGs that do not fall in this category can often still be closely approximated with our approach. The SRG-RCWA algorithm has been successfully applied to …

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Pyridinium Bis-Retinoids: Extraction, Synthesis, And Folate Coupling, Mary Allison Alvarez Mar 2007

Pyridinium Bis-Retinoids: Extraction, Synthesis, And Folate Coupling, Mary Allison Alvarez

Theses and Dissertations

This thesis is divided into two parts.Part I describes the organic extraction, separation, and liquid chromatographic-mass spectrometric analysis of chromophores from human and bovine retinal pigment epithelium. Flurorophores in the retinal pigment epithelium have been implicated in age related macular degeneration. In addition, the synthesis and characterization of a number of bis-retinoid type compounds that may potentially be found in such extracts, or that may be used for insight into pyridinium bis-retinoid reactivity, was accomplished.Part II describes a study of pyridinium bis-retinoid-folic acid coupling with respect to linker type, linker length, and nature of the linkage. Folic acid has been …

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Circuit And Modeling Solutions For High-Speed Chip-To-Chip Communication, Timothy Mowry Hollis Mar 2007

Circuit And Modeling Solutions For High-Speed Chip-To-Chip Communication, Timothy Mowry Hollis

Theses and Dissertations

This dissertation presents methods for modeling and mitigating voltage noise and timing jitter across high-speed chip-to-chip interconnects. Channel equalization and associated tuning schemes have been developed to target the distinct characteristics and signal degradation exhibited in the clock and data signals of multi-Gigabit/second digital communication links. Multiple methods for generating realistically degraded signals for the purpose of simulation are also presented and used to verify the proposed equalization and filtering topologies. Specifically, a new technique for modeling high-speed jittery clocks in the frequency domain is presented and shown to reduce transient simulation time and memory requirements, while simultaneously improving the …

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