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2014 Abstracts

Correlation analysis of military aircraft jet noise

January 01, 2014 12:00 AM
Zachary Anderson, Brigham Young University Physical Sciences Correlation analysis is useful in extracting spatiotemporal relationships between signals and can be used to examine features of near-field jet noise for source properties. Characteristic correlation envelopes determined by Harker et al. [JASA 133, EL458 (2013)] can be used to relate correlation lengths to fine and large-scale turbulent structures. As an extension, cross-correlation shows spatial variation in jet noise and further reveals the transition between short (fine-scale) and long (large-scale) correlation lengths. These analyses are applied to a military jet dataset of a ground based linear microphone array positioned 11.6 m from the jet axis. Correlation analyses over multiple engine conditions and observation directions are reported. In particular, a maximum correlation coefficient greater than 0.5 exists over a range spanning multiple wavelengths in the region of greatest overall sound pressure level at military power. [Work supported by ONR.]

Analysis of Untriggered Small Events in the HAWC Telescope

January 01, 2014 12:00 AM
Ian Sohl, University of Utah Physical Sciences Current software in the High Altitude Water Cherenkov (HAWC) Telescope data collection system only triggers saving of events that pass a specified number of hits and energy. Our analysis of the untriggered (and unsaved) data will identify the number of potentially significant events that are bypassed by the existing software. By the application of a sorting function onto current Monte Carlo generated data, we can categorize incoming events into various types of particles, primarily muons, while also filtering out randomized noise from the photomultiplier tubes used in HAWC. Due to the relatively low rate and energy of the photomultiplier tube noise, many of the significant events for the untriggered set are potential useful particles. Our triggering algorithm, based on the energy, timing and saturation of the tanks is primarily focused on separating muons from the bulk of data. These raw rate data for small events are a relatively unexplored area for HAWC and measurements can be useful for a variety of calibration tasks for the telescope. They can be useful for understanding the impact of the atmosphere on the telescope’s data collection, as well as the triggering of the photomultiplier tubes through secondary sources. This untriggered data can also be used in a variety of useful forms not directly related to HAWC’s primary usage goals, primarily solar physics. Due to the relatively low energy and hit count from solar events, most of the data are thrown away by the triggering algorithm.

Evaluation of potential impact of tar sands mining on the integrity of groundwater quality in PR Spring, Uinta Basin, Utah

January 01, 2014 12:00 AM
Mallory Millington, University of Utah Physical Sciences Groundwater in the western United States is a limited and important resource for agriculture, industry, and residents alike. Knowing the movement of groundwater is critical to understanding the potential of groundwater contamination from human activities. While groundwater flow is difficult to quantify, it typically recharges in high elevation and discharges towards lower elevation. The first commercially-approved tar sands mine in eastern Utah is located on a ridgetop in the PR Spring area within the high plateaus on the south rim of the Uinta Basin. To evaluate the potential of groundwater contamination due to tar sands mining a study was conducted to understand groundwater flow in the PR Spring area, specifically the canyon directly south of the tar sands mine called Main Canyon. Water samples were taken from four groundwater springs at elevations ranging from 7040 to 8040 ft in or near Main Canyon. Water quality measurements taken in the field showed that the lower springs exhibited higher conductivity (900 vs. 636 μS/cm) and lower dissolved oxygen (30% vs. 88% saturation) than the higher elevation springs. This suggests that the lower springs have had a greater amount of water-rock interaction and so are chemically more evolved than the springs at higher elevations. SF6 age dating indicated that the high elevation springs are younger than the lower elevation springs, 5.5 vs. 16.0 years since recharge respectively. The field parameters and SF6 age data all indicate that higher elevation springs are younger and less chemically evolved than the water at lower elevations. This indicates that the springs in Main Canyon are sourced from local recharge at the ridgetops. Given these findings the tar sands mine should consider taking preventative measures to protect groundwater resources.

Parental Distress in Mothers of Very Low Birth Weight Infants: Examining the Influence of Medical,Family and Maternal Mental Health Factors.

January 01, 2014 12:00 AM
Laurin Wilson, Utah State University Social and Behavioral Sciences Premature birth and subsequent hospitalization of an infant in the Newborn (or Neonatal) Intensive Care Unit (NICU) can be an extremely stressful time for parents and has been associated with maternal depression, anxiety, and decreased coping ability (Hack, Taylor, Klein, & Mercuri-Minich, 2000; Hughes, McCollum, & Sheftel, 1994; Partridge et al., 2005; Shaw, Sweester, St. John, Lilo, Corcoran, Jo, & Horwitz, 2013). Interventions to reduce parents’ stress levels during the hospitalization of their very preterm infants have mixed results (Boyce, et al., 2008; Matricardi, S., Agostino, R., Fedeli, C., & Montirosso, R., 2013). This study examined the medical, family, and maternal mental health factors that influenced feelings of parental distress for mother of very premature infants.

Characterizing water-related land use differences across urban river reaches

January 01, 2014 12:00 AM
Dusty Pilkington, Weber State University Social and Behavioral Sciences Boundaries dividing political authority rarely match natural water flow. Multiple agencies, often with competing policies and agendas, manage water within single watersheds. This discrepancy can render management efforts ineffective. Local water agencies include soil conservation districts, local health departments, and engineering agencies. Agencies have varying funding sources, managerial structures, and jurisdictional boundaries. Fragmentation can frustrate management efforts at watershed scales. Comparisons between natural watersheds and human political geography can therefore be helpful in avoiding conflicts. This research examines discrepancies between political and physical geographies for sections of three Utah rivers : the Logan and Provo Rivers, and Red Butte Creek. These rivers are being targeted for intensive research as part of a statewide, multidisciplinary water sustainability project, titled iUTAH. Water-related land use (WRLU) data acquired from Utah’s Automated Geographic Resource Center were analyzed using ArcGIS geoproceessing tools. WRLU contributing to water quality in urban river reaches is described. WRLU was examined using three boundary sets, comparing the political geography of the river reaches, as depicted in municipal boundaries and management areas of community water providers, to their physical geography, as depicted in United States Geologic Survey Hydrologic Unit Code (HUC) watersheds. WRLU mixes using political infrastructure were contrasted with land use mixes from HUC boundaries. WRLU was classified in seven categories: residential, commercial/industrial, riparian/water features, irrigated agriculture, non-irrigated agriculture, farmsteads, and parks/open spaces. A gradient from rural Heber, to urbanizing Logan, to fully urbanized Red Butte Creek is shown. While Red Butte Creek HUC boundaries showed 53.8 % residential land use, Red Butte Creek municipal boundaries and community providers totaled 26 % and 39 % residential use, respectively. Differences emerged when irrigated agriculture was assessed using HUC boundaries. Irrigated agriculture totaled 0.2 % in Red Butte Creek, with Logan showing 29. 7% and Heber irrigated agriculture sitting at 41.1 %.

Health Literacy and Child Language Brokers: How Bilingual Children and Spanish- Speaking Parents Navigate the Medical Setting

January 01, 2014 12:00 AM
Luz Maria Carreno, Utah State University Social and Behavioral Sciences Significance: Patients’ health literacy, or ability to comprehend and understand health information, influences their health status, knowledge about medical care and conditions, and hospitalization and adherence rate (Andrus, & Roth, 2002). Low-English proficiency patients are especially at risk, given they must overcome English and health literacy barriers.

“No, No, NO! to Go, Go, GO”: The Transition to Sexual Activity for Heterosexual Couples Who Were Abstinent Prior to Marriage

January 01, 2014 12:00 AM
Kelsea Hill, Utah Valley University Social and Behavioral Sciences Sexuality has long been identified as foundational in the lives of married couples. An area lacking in research, however, is the transition into sexuality made by couples who practiced abstinence prior to being married. The data for this study comes from a survey of 597 respondents that had practiced abstinence before being married. This focuses on the qualitative responses to questions asked abstinent couples about what helped make the transition into sexual intimacy, what purpose(s) sex has in their relationship, what they wished they had discussed prior to having sex, and what challenges they experienced in the transition into sexual intimacy.

Men, Minds, and Mentors

January 01, 2014 12:00 AM
Jared Glenn, Utah State University Social and Behavioral Sciences Previous research shows that girls and women tend to prefer and perform better in classes taught by women. However, much less research analyzes the impact of instructor gender on learning outcomes among boys and men. This research fills that gap by analyzing the effect of professor gender on male college students’ achievement. Relying on survey and in-depth interviews among undergraduate men at a large research university, this study finds no significant empirical data that professor gender significantly impacts men’s academic achievement, in contrast to previous findings among girls and women. Interview findings, however, suggest that men prefer the tough grading, which they indicate is integral in male-taught classes. The study contributes to our understanding of gender differences in an academic setting and how that factor shapes learning outcomes and achievement.

The Use of ArcGIS and Shallow Groundwater Monitoring for Stormwater and Irrigation Management with a High Water Table, Springville, Utah

January 01, 2014 12:00 AM
Andrew Fletcher, Utah Valley University Physical Sciences Springville, Utah, is known for its high water table and many freshwater wetlands and springs, which gave rise to the name of the city. Flooding of barns is a common problem among farmers in western Springville, which is just east of Utah Lake. These frequent barn floods are anecdotally linked to high-intensity precipitation events and the common use of flood irrigation. The objective of this study is to determine the cause of barn flooding and to make recommendations for mitigation of barn flooding for individual farmers with whom we are working in this area. The objective is being addressed first by using ArcGIS to determine the watershed of each barn and the NRCS (Natural Resource Conservation Service) Web Soil Survey to map hydrologic soil groups within each watershed. Results from the larger-scale Web Soil Survey will be supplemented with measurements of soil hydraulic conductivity using the SoilMoisture Equipment Model 2800K1 Guelph Permeameter. The above data will be used in the NRCS Curve Number Method to estimate the volume of surface runoff expected in a 100-year 24-hour precipitation event. The objective is also being addressed by installing shallow, hand-augured wells for monitoring the depth to the water table during high-intensity precipitation events and flood irrigation events. The results will be used to develop recommendations for a combination of (1) installation of French drains for diversion of stormwater (2) modification of current irrigation methods (3) pumping and diversion of groundwater. Results and specific recommendations for individual farmers will be presented at the meeting.

Wavelength Detection from Filtered Photodiodes

January 01, 2014 12:00 AM
Nils Otterstrom, Brigham Young University Physical Sciences Filtered photodiodes show potential as inexpensive laser wavelength meter. Photocurrents are measured digitally. The photocurrent is digitized using externally controlled integration times to achieve the highest precision possible from the digital to analog converters on the photosensor chip. Using an algorithm we’ve developed and calibrated intensity curves, we can precisely calculate wavelength from the output of the different photodiodes. Limitations due to etaloning from reflections off of the surfaces of the filters were analyzed and effectively mitigated, allowing the device to achieve high precision with a stability of 0.102 nm over several hours.

Characterization of undocumented bonneville shorelines with evidence of possible tsunamis

January 01, 2014 12:00 AM
Brittney Thaxton, University of Utah Physical Sciences There are many undocumented shorelines seen in Utah. As many as 30+ shorelines have been identified along the edges of the basin throughout the state. The purpose of this study is to characterize undocumented shorelines and identify potential evidence for tsunamis that might have occurred in Lake Bonneville thousands of years ago in areas such as Little Mountain, Stansbury Island, and Promontory Point, Utah. Lake Bonneville existed 32-10K years ago and was influenced by the Wasatch fault which was active as early as the Miocene. Scarps of this age are common and range between 15-20 feet in height (Machette, Personius, Nelson, Schwartz, Lund 1991; Dinter, Pechman, 2004a and 2004b). Several faults beneath Lake Bonneville could have produced tsunamis. The more water that is displaced the greater the tsunami will become and leave a greater impact onshore (Dutykh and Dias 2009). The East Great Salt Lake fault cuts NS across Bear River Bay east of Promontory Range. This fault line is an excellent candidate for causing a tsunami during the Lake Bonneville highstand because it is beneath the Great Salt Lake meaning it would have uplifted the entire water column of Lake Bonneville and since it is also close to the Promontory Range, it is likely it would leave tsunamite evidence along the shore. The fault rupture interval is between 3,000 and 3,500 years meaning fault ruptures could produce a tsunami during the lake’s high stand. Tsunamite is the term used for deposits related to tsunamis. The tsunamite features found along the shorelines will be similar to sedimentary features such as normally graded sand, mudstone clasts, and other gravel deposits that are out of place with the known shorelines (Shanmugam 2006). This is a unique opportunity to discover ancient tsunami evidence in Utah, a topic that has yet to be pursued.

Bio-Inspired Molecular Manganese-Calcium Catalysts for Water Oxidation

January 01, 2014 12:00 AM
Nicholas Labrum, Utah State University Physical Sciences Increasing concerns on the anthropogenic climate change, rising global energy demands, and diminishing fossil fuels have urged the search of alternative carbon-neutral and sustainable energy resources, among which solar energy stands out as the most promising target since it is the largest exploitable resource. However, its nature of diurnal variation, intermittence, and unequal distribution requires efficient and cost-effective capture, conversion, and storage. Generation of chemical fuels, such as hydrogen, from solar energy input represents an appealing approach to meet this goal. An ideal scheme would tap hydrogen from the splitting of water with concomitant evolution of oxygen. Due to the nature of the four-proton and four-electron process, water oxidation is the bottle neck of the overall water splitting process. Nature catalyzes water oxidation using an oxygen evolving complex (OEC) in photosystem II. This project aims at mimicking the OEC to prepare and investigate bimetallic Mn-Ca catalysts for water oxidation catalysis. Calcium has been reported to be critical in water oxidation by OEC, however its functional role has not been well studied. By positioning a calcium atom in the second coordination sphere of manganese in molecular scaffolds, we are able to systematically study the functional role of calcium at the molecular level. Our project will prompt the development of water oxidation catalysis and benefit artificial photosynthesis at large.

Melting Glaciers: A source of mercury and other trace elements to high elevation ecosystems at Grand Teton National Park?

January 01, 2014 12:00 AM
Greg Carling, Brigham Young University Physical Sciences Wyoming the second most glaciated state in the lower 48 United States has seen drastic changes in the size of its glaciers. Glaciers in high elevation ecosystems of Grand Teton National Park are not anywhere near to the size that they were 100 years ago. The glaciers continue to decrease in size every day. As the environment changes the glaciers change in size and can be affected by many factors in the environment. Deposition of particulate matter from the atmosphere into the glaciers occurs as pollution is becoming worse and more common. Studies done throughout the world have shown that glaciers can act as a source for mercury and other trace metal elements in high elevation ecosystems. Through the assistance of the UW-NPS Research Station Dr. Greg Carling of BYU and his team of graduate and undergraduate assistants retrieved 100 glacial melt water samples from the Middle Teton, and Teepee Glaciers and stream sites in Garnet Canyon, and from the Teton Glacier in the Glacier Gulch area. In the data analysis completed up until this point, concentrations of various trace elements have found in sample sites in close proximity to the Middle and Teton glaciers on the glacial moraine. We hypothesize that these glaciers act as a source for mercury and trace elements that can then be transported to lower elevation ecosystems within the Greater Yellowstone Ecosystem.

Trace element concentrations showing signs of urbanization along the Provo River, Utah

January 01, 2014 12:00 AM
Tucker Chapman, Brigham Young University Physical Sciences The Provo River provides the opportunity to study three systems from low to high anthropogenic activity. Its headwaters are in an undeveloped area of the Uinta Mountains. The river then moves into a valley that is developing from an agricultural to an urban system. The lower portion of the river moves into the urbanized Utah Valley. These systems give the ability to study the changes in trace element chemistry from a variety of sources. Trace element data were collected during the 2013 water year including the spring snow melt. Correlation was analyzed among the different trace elements using multivariate statistics in order to discover trace element sources. The element loads were calculated using USGS Load Estimator (LOADEST) software. The study has implications involving the drinking water of >2 million people in the Utah and Salt Lake valleys and the changes that the shift from agriculture to urban is causing.

How many class ii wells present a risk for induced seismicity?

January 01, 2014 12:00 AM
Isaac Allred, Utah State University Physical Sciences We examine the number and location of Class II wells in the central U.S. to constrain future work on the potential for induced seismicity. The EPA, state oil & gas commissions, scientific papers, and media stories frequently state that there are ~140-160 k Class II wells. Excluding California, we expected to find approximately 120 k wells; but instead found ~ 82 k active injectors in the available databases. State datasets vary in accessibility, availability, and content of well data. Lack of digitized well data also limited our online search, and several states require FOIA requests to be filed. State databases with poor searching and sorting functions further complicated data mining, requiring a well-by-well search, and for several states, well locations and injections were difficult to determine. Common discrepancies between EPA well totals and state database totals appear to be due to counting of plugged and abandoned wells, and wells that are permitted but not in use. No data has been retrieved for about 1,600 wells on tribal lands and Indian Country, and several states would not provide “confidential” well data. Of the active injectors, at least 55 k wells inject into producing, pressure-depleting oil and gas formations and are less likely to generate damaging earthquakes. Of the ~ 16 k non-EOR wells, we found 3,400 wells that inject at depths > 1.8 km, where most M > 3.0 midcontinent earthquakes occur. We will present examples of data from several states, that show the locations and depths of injectors, earthquakes, depth to basement, and we will provide an overview of the public file sharing system of the data. We will search for correlations between the depth of injection, the number of injection wells, recent seismic activity, the nature of the subsurface geology, and regional stresses.

Histone modifications are altered in the renal cortex of ventilated preterm lambs

January 01, 2014 12:00 AM
Adam Blair, University of Utah Physical Sciences Objectives: Histone covalent modifications influence regulation of gene expression. Changes in histone covalent modifications are triggered by abrupt changes in environment, such as preterm birth followed by mechanical ventilation (MV). Whether histone modifications also occur in the kidney of chronically ventilated preterm lambs is not known. We hypothesized that ventilation of preterm lambs affects histone modification in kidneys.

Source of Elevated Free Carbon Dioxide Levels at the Springville State Fish Hatchery, Springville, Utah

January 01, 2014 12:00 AM
Christopher Clements, Utah Valley University Physical Sciences DWR operates the Springville Fish Hatchery raises rainbow trout for stocking lakes and ponds. Since February 2011 the hatchery has observed excessive physical activity among the trout, including jumping out of raceways onto the concrete walkways. Excessive physical activity can result from free carbon dioxide levels above 10 ppm and free carbon dioxide levels in the hatchery water have been measured as high as 17 ppm. They have added some treatment processes before it enters the hatchery and greatly reduced the food intake of the trout, which increase costs and reduce production. This has reduced free carbon dioxide levels to only 15 ppm. The objective of this study is to determine the source of elevated free carbon dioxide and recommend solutions for the problem. The water source for the hatchery is a shallow pond, which is fed by 16 springs, both warm and cold. The objective is being addressed by measuring discharge from each spring and collecting water samples for measurement of free carbon dioxide in addition to other common stressors of rainbow trout. Free carbon dioxide, temperature, pH, electrical conductivity and dissolved oxygen are being measured on-site, while hardness, nitrite, ammonia, copper, iron and zinc are being measured. Free carbon dioxide levels at some warm springs have been measured as high as 25 ppm. Mixing calculations will be carried out to determine whether the discharge and water quality of each spring is consistent with the water quality currently entering the hatchery and whether the removal of one or more springs would result in sufficient water within the acceptable ranges for rainbow trout. If calculations estimate free carbon dioxide significantly lower than the measured free carbon dioxide in the water entering the hatchery, it is possible that additional elevated free carbon dioxide results from the decay of organic matter.

Lyman-alpha Emission as a Probe of Galaxy Environments

January 01, 2014 12:00 AM
Joshua Wallace, University of Utah Physical Sciences We study the effect of the circum-galactic gas environment on the observed Lyman-alpha emission from Lyman-alpha emitting galaxies. These galaxies are primarily high-redshift star-forming galaxies that are important in understanding both galaxy and universe evolution. The Lyman-alpha photons emitted from these galaxies should hold valuable clues about the general environmental properties (such as gas velocity, density, and distribution) around galaxies, since the photons can be strongly affected and scattered by the neutral hydrogen atoms that make up the majority of the gas. However, explaining exactly how a galaxy’s environment affects its Lyman-alpha emission is very complex and currently cannot be predicted with complete certainty — every time a Lyman-alpha photon interacts with a hydrogen atom, its direction and frequency are changed, which in turn affects how far it will travel before the next interaction. We study the environmental effects on Lyman-alpha emission properties by applying Monte Carlo Lyman-alpha radiative transfer modeling to simple analytic models and find an important role of the anisotropic distribution of gas in determining the observed photometric and spectral properties of Lyman-alpha emission. We further perform a detailed investigation by applying the radiative transfer modeling to realistic star-forming galaxies in high-resolution cosmological galaxy formation simulation. From our analysis so far, we find the Lyman-alpha emission from the models shows a strong dependence on viewing angle, as well as correlations between observed spectral features and environmental conditions. We plan to model and analyze a large sample of simulated galaxies to better describe and statistically quantify the above dependence and correlations. Our study will lead to a better understanding of the effects galaxy environment on the observed Lyman-alpha emission and in turn provide a theoretical guide on how to use observed Lyman-alpha emission to learn about the environments of star-forming galaxies and hence galaxy formation and evolution.

Structural health monitoring of natural arches in the Moab area

January 01, 2014 12:00 AM
Ben White, University of Utah Physical Sciences We evaluated the ambient noise wavefield of select arches in the Moab area as a means to assess changes in their structural health over time. Our measurements revealed that the fundamental frequency of vibration at Mesa Arch and Corona Arch are both in the range of 3 Hz, while other spectral peaks are likely related to higher-order vibrational modes. We use numerical modeling for modal analysis in an attempt to predict and visualize the various modes of vibration and their frequency Resonant frequencies are projected to change with snow or rain loading or after a strong earthquake. By monitoring resonant frequencies over time and under various environmental conditions, our goal is to detect reversible and/or irreversible changes that may accompany damage of these arches.

Preventing Mode-hops in Extended-cavity Diode Lasers

January 01, 2014 12:00 AM
Enoch Lambert, Brigham Young University Physical Sciences Extended-cavity diode lasers are important tools in scientific research. Current extended-cavity diode laser systems will change frequency unpredictably while operating, requiring extensive effort to tune them back to the right frequency. We seek to implement a novel method of extended-cavity diode laser control that adds an extra control system to prevent these unpredictable changes.

Controlled Zinc Oxide Hexagonal Prism Formation with Ethanol Amines

January 01, 2014 12:00 AM
Brielle Woolsey, Brigham Young University Physical Sciences A method of forming zinc oxide (ZnO) single crystal hexagonal prisms is derived from a standard sol-gel method. The new synthesis requires water, zinc acetate, and diethanol amine (DEA) to create a zinc hydroxide/zinc hydroxide acetate gel, which forms single crystal hexagonal prisms upon heating. Characterization of the gel was done by XRD as well as by XRD high temperature chamber (HTK) to determine the role of temperature in prism formation. SEM images showed hexagonal prisms were of uniform size (approx. 0.5 — 2 µm). TEM and electron diffraction images showed a change from randomly oriented particles to an ordered single crystal after heating. Ethanol amines, heating of the gel, and the zinc acetate salt proved to be critical to prism formation.

Use of the Manning Equation to Estimate Stream Discharge through Natural Slot Canyons and Artificial Slots

January 01, 2014 12:00 AM
Jeff Selck, Utah Valley University Physical Sciences Stream discharge through narrow, deep slot canyons can be a major source of groundwater recharge in the arid Southwest. Various state and federal agencies use the empirical Manning Equation to predict the discharge through artificial slots created for diversion of rivers around coal mines. However, it is not obvious that the Manning Equation could be applied to slot canyons or artificial slots as the data base used for development of the Manning Equation did not include either natural streams or artificial structures for which most of the friction occurs along the sides of the channel. The objective of this research is to develop an empirical formula for estimating the Manning roughness coefficient for flow through narrow, deep slots. The objective is being addressed by measuring stream discharge through natural slot canyons in southern Utah that are fed by perennial streams, springs or dam outlets. Based on measurements at ten sites along eight streams, the best estimate for the Manning roughness coefficient is n = 0.873nJ exp(5.108A/w2) where A is stream cross-sectional area, w is stream width, and nJ = 0.39S0.38R-0.16 is the roughness coefficient estimated by Jarrett (1984) for high-gradient streams, in which S is slope of the stream bed and R is hydraulic radius (ft). The new formula estimates stream discharge with a mean accuracy of 44%. On the other hand, Jarrett’s (1984) formula underestimates stream discharge by 1-2 orders of magnitude for aspect ratios A/w2 in the range 0.6-0.7. The new formula will be refined by additional measurements on slot canyons, artificial diversions, and a laboratory hydraulics bench. It is hoped that the new formula will lead to a more realistic design for artificial slot diversions.

Utilizing Low-cost NIR Imaging Systems in Medical Physics

January 01, 2014 12:00 AM
Kim Nielsen, Utah Valley University Physical Sciences Infrared Thermography (IRT) has become popular in the medical field for various applications and procedures. One such application involves the use of IRT in the active detection of skin lesions and neoplasms. More specifically, medical professionals are using IRT as a non-invasive method for the early detection of harmful lesions, such as melanoma.

Synthesis, Analysis, and Biological Activity of Novel Organoarsenic Products

January 01, 2014 12:00 AM
Jared Weaver, Southern Utah University Physical Sciences Organoarsenic are compounds containing carbon and arsenic. These compounds have been shown to have biological activity and pharmaceutical properties, and some organoarsenic compounds have even displayed potential for aiding in current medical problems up to and including possibilities as anticancer agents. Currently relatively little research is being done on organoarsenic compounds by the pharmaceutical community due to current views from the media based largely upon the toxicity of their inorganic arsenic counterparts (inorganic compounds are compounds not containing carbon), organoarsenic compounds however have significantly toxicity. Also, like with any medicine, toxicity depends predominately upon concentration, and given a high enough concentration organoarsenic compounds would logically follow the same trend. Synthesis of a large variety of novel organoarsenic compounds has been found via a reaction involving a variety of aldehydes or ketones and 2-(Dichloroarsino)benzaminium chloride. Research will focus on synthesis, isolation, and characterization of a library of organoarsenic compounds and then determine their respective biological activities. Synthesis will determine mechanistic requirements of said reaction and will be done to produce a diverse selection of organoarsenic compounds. Compounds will be isolated through precipitation of product and vacuum filtration of formed product. Structure will be determined through IR, NMR, and Gas Chromatography/ Mass Spectrometry, and through X-ray crystallography. Biological activity is suspected with potential for testing via a Kirby-Bauer Disc treatment. It is hypothesized that novel organoarsenic products will be formed by reaction of 2-(Dichloroarsino)benzaminium chloride with all carbonyl compounds containing an alpha carbon with at least one proton used, and that compounds synthesized will inhibit bacterial growth.

Use of Phage and Vancomycin Treatments Against Staphylococcus aureus Biofilms

January 01, 2014 12:00 AM
Kelly Hoerger, University of Utah Physical Science Implant devices such as orthopedic, dental, and cochlear implants are commonly utilized as part of many medical treatments. However, these foreign objects are susceptible to bacterial contamination, thereby putting the host at risk of an infection that is challenging to eliminate due to biofilm formation. Biofilms are formed when a bacterial cell adheres to and colonizes such metal or plastic surfaces. The cells aggregate to form and embed themselves in a thick and protective polysaccharide matrix, making biofilms resistant to many antibiotic treatments.

Precise External Timer

January 01, 2014 12:00 AM
Adam Kingsley, Brigham Young University Physical Sciences In the construction of various sensors in the lab, highly accurate integration times are required. It is advantageous to have a precise external timer to run the circuitry contained in the sensor. By taking a signal in the range of megahertz down to hertz or milihertz range, it is possible to control the start and stop times for circuits. Overall this means that every time a measurement is taken it represents the same length of time.

A Contemporary Assessment of Feminist Attitudes

January 01, 2014 12:00 AM
Jay Winters, Brigham Young University Social and Behavioral Science The common stereotype of feminism has a negative connotation implying that feminist’s are simply radical women’s rights activists. The reality is that feminism is hard to define given its complexity and the range of issues it encompasses. A scale was developed in 1994 called the Attitudes Toward Feminism and the Women’s Movement (FWM), which sought to predict attitudes toward feminism (Fassinger, 1994). Many social psychologists see it as an effective way of predicting attitudes despite its age or lack of an emotional component. Our Assessment of Feminist Attitudes (AFA) scale was developed to include an emotional response component as well as provide a contemporary view of the ever-changing feminist movement. Our study is in the process of being assessed for statistically significant data. The effectiveness of the AFA in measuring feminist attitudes will be known in the coming weeks.

Research on the Relationship between the Police and the Muslim Population of Cambridge England

January 01, 2014 12:00 AM
Madeleine Ary, Brigham Young University Social and Behavioral Sciences In 2010 I conducted research in the city of Cambridge England on the relationship between the Muslims of Cambridge and the police of the same city. I conducted this research primarily through single interviews and data analysis from the United Kingdom in general and England specifically. From this research I discovered that the relationship between these two groups was maintained by frequent, mutual contact and trust. England at the time was experiencing a summer of rioting, much of which revolved around Islam. This may have increased the difficulty in such a faith group, authority relationship, however their efforts to maintain a positive relationship only intensified and there was little to no real disruption within the Cambridge Muslim community. My research demonstrates how such relationships can be effectively conducted even in otherwise tumultuous circumstances.

The Russian Fatalist Mentality: A undergraduate perspective on ethnographic research

January 01, 2014 12:00 AM
Daniel Cardoza, Brigham Young University Social and Behavioral Sciences This paper aims to offer an introductory platform to the correlation between Russian fatalistic tendencies and conversion to Protestantism. It argues that fatalism is a central aspect of the Russian collective conscious, something that is fundamentally at odds with the Protestant temperament as outlined by Max Weber in his book, The Protestant Ethic and The Spirit of Capitalism. What happens when a Russian converts to a Protestant religion? This paper specifically focuses on conversion to one religion, The Church of Jesus Christ of Latter-day Saints (LDS). Analysis of data gathered through ethnographic interviewing and participant observation shows that a correlation might exist between belief in LDS doctrines and a reduction of fatalistic tendencies. This paper serves an introductory basis for future research on this topic. As such, the paper also presents recommendations for further research.

Status quo bias and agent-external loss aversion in ballot wording

January 01, 2014 12:00 AM
Ryan Hill, Brigham Young University Social and Behavioral Sciences We analyze the presence of two types of framing bias in ballot wordings that affect election outcomes: status quo bias and agent-external loss aversion. Both of these biases are studied extensively in behavioral economics and likely have salient impacts on initiative or proposition measures in state elections. Status quo bias is the tendency of a voter to be more likely to maintain a currently enacted policy rather than passing a new law. Agent-external loss aversion is the tendency for a voter to be more likely to grant a right to a minority population rather than vote to restrict a right. Both of these biases have had important impacts on the outcome of recent ballot initiatives especially on California Proposition 8 that failed to legalize the right of marriage for same-sex couples. We test the salience of these framing biases by conducting a nationwide survey experiment that randomly assigns different ballot wordings for the same policies across different survey respondents. The survey mimics a real voting situation and the randomization of questions ensures that we can identify the specific effect of each bias on the voting outcome. We analyze the treatment effects using difference of means and ordinary least squares analysis. We also extend our analysis to examine whether moderating variables such as political knowledge or opinion have an impact on the magnitude or direction of the bias effects.

Becoming an Adult on an Island

January 01, 2014 12:00 AM
Peter Busche, Brigham Young University Social and Behavioral Sciences An undergraduate study on young people in the Channel Islands (near England and France. Such questions will be addressed, such as: What makes growing up in a tiny Island community unique? How does leaving the Island for the outside world affect the young peoples’ transition into adulthood? This project consists of a descriptive outline based on 2 months of ethnographic research, as part of a 10,000 word senior thesis. Current anthropological and psychological theories are part of the overall construction of the data.

The Effects of Second Language Reading on Eye Movement

January 01, 2014 12:00 AM
Kyle Nelson, Brigham Young University Social and Behavioral Sciences Most research on eye movement while reading has focused on native speakers reading in their own language. This has led to detailed characterizations of the differences between the eye movement of English and Chinese speakers when reading. However, there is a lack of research concerning eye movement differences when reading in a second language. It is expected that English speakers, reading simple letters, would exhibit different eye movements when reading Chinese characters, where words are commonly made up of one or two intricate symbols. Similar adjustments in eye movement are expected if a Chinese speaker tried to read English. Our study seeks to first measure how second language skill influences eye movement during reading and secondly, to distinguish eye movement behaviors that are controlled by either cognitive or visual factors. We hypothesized that as individuals increase in proficiency in their second language, their eye movements while reading a second language would begin to mimic a native speaker’s reading his own native language. Participants were native Chinese or English speakers selected from Chinese language courses and ESL courses taught at Brigham Young University. Participants were matched based on language proficiency and history of exposure to their second language. Native Chinese and English speakers read paragraphs in both Chinese and English while an eye-tracking machine recorded their eye movements. We measured such variables as fixation duration, Saccade amplitude, refixation probability and other important variables. These results will be analyzed to find the differences in eye movement that occur when reading in a second language compared to the participant’s native language. The results, strengths and limitations of the study and future research will be discussed. We believe our research will be beneficial in characterizing how individuals read in a second language, assessing language proficiency, and directing the development of language instruction methods.

A Pilot Study of Social Support for Birth-Grandparents of Adopted Children

January 01, 2014 12:00 AM
Renette Goodrich, Utah Valley University Social and Behavioral Sciences In the realm of Adoption most of the focus is given to the birth parents and the adoptive couple. However, there are many more people involved, some being the birth grandparents, who are the parents of the expecting parents. These grandparents, most of who are dealing with feelings of loss and grief, have been left to struggle through the experience by themselves. A scholar from Well’s, were the law requires social services to be offered to the extended family, conducted studies with grandparents; some of whom received social services and some who did not. His found a statistically significant difference in those who participated in the social services and those who did not. Grandparents who took advantage of social services where less stressed and more excepting of the adoption. This pilot study was conducted at one agency in Utah. Because of HIPPA laws the only access was to those grandparents who attended the support group. This study also showed social service support for these grandparents where significant; by lowering the stress level of dealing with a child’s unexpected pregnancy and helping them with direction and acceptance. This was a qualitative and quantitative survey handed directly to the participants to fill out and return. The agency where this survey was conducted and other associated agencies are interested in these results to better improve currents services and reach out to other grandparents who are not currently participating in these groups. This topic has not been studied in the United States; thus this study will add to the body of scholarly knowledge on this topic.

Response to the european debt crisis: an analysis of the creation of a european union banking union

January 01, 2014 12:00 AM
Ashley Jolin, University of Utah Social and Behavioral Sciences This paper analyzes the essentiality of creating a just European Union banking union between member states of the eurozone, in response to the European debt crisis. In 1992, the Maastricht Treaty established strict financial criteria for member states to follow, ensuring a strong economic environment to support the new currency union. However, numerous member states did not abide by these limits, and countries with weaker economic stability such as Greece and Ireland began to accumulate huge public deficits. As a response to this debt crisis, in June 2012 the key institutions and leaders of the EU proposed working towards a genuine Economic and Monetary Union, a banking union serving as the keystone of this project. I argue it is imperative that this banking union is designed to be successful at dissolving the current economic crisis and anticipating future problems, as the existence of the eurozone is contingent upon it.

Visual Evaluation: Understanding Visitor Experiences in a Museum through Post-Installation Storyboards

January 01, 2014 12:00 AM
Heather White, Brigham Young University Social and Behavioral Sciences The purpose of this poster is to illustrate the use of storyboards in visually evaluating exhibits and the visitor experience in a narrative museum. Storyboards, a key tool used to develop a visual story, can be used in museums to provide unique insights into the dynamic experience of visitors as they move through exhibits. This poster focuses on how storyboards can be used post-installation to evaluate how visual elements and space effect the visitor’s engagement and experience within exhibits. This poster will present storyboards for three exhibits and the resulting analysis. I analyzed the storyboards by examining artistic elements (line, color, shape, space, etc.) and design principles (unity, balance, scale, proportion, etc.) as they are formed and reformed throughout the storyboard. These changes are only noticeable because of the temporal aspect of sequenced storyboard images. The results show how the visual and spatial visitor experience encourages or discourages engagement with the exhibits. These results can be used, in addition to written and oral evaluation methods, to critique and improve exhibitions to be more accessible and engaging for future visitors.

Personality, Genetic, and Biological Factors Linked With Social Dominance in Rhesus Macaques

January 01, 2014 12:00 AM
Mason Bennett, Brigham Young University Social and Behavioral Sciences In the natural environment, rhesus macaques (Macaca mulatta) acquire social dominance rank through matrilineal family (mothers’) inheritance. It is unknown as to how high ranking matrilines initially become high in social dominance. Serotonin (5HT) has been linked to social dominance rank. Central Nervous System 5HT is modulated by both the serotonin transporter (5HTT) and MAO and both have been linked to social dominance rank. MAOa and the 5HTT are the two main variables controlling central serotonin. To assess the effects of genetic and temperamental variables on matrilineal rank and potentially the effects of rank on behavior and temperament, we examined: the serotonin transporter genotype and MAOa genotypes. Because low or unstable social dominance rank is stressful, leading to chronic hypercortisolemia we also measured stress-induced cortisol levels. Lastly we examined infant temperament ratings taken from a Bio-Behavioral Assessment (BBA) pioneered by John Capitanio. This test is performed over a 24 hour period when infants are 6 months of age, and includes a bio-behavioral battery of tests designed to measure temperament. Dominance was measured by wins/losses during head-to-head competition between all possible pairs in a group. Subjects included 2300 rhesus macaques raised at the California National Primate Research Center between the years of 2001-2012. Results showed that matrilines high in social dominance exhibited a significantly high rate of both the long allele of the serotonin transporter genotype, and for males a high frequency of MAOa allele 6. As infants, subjects from matrilines low in social dominance rank exhibited high cortisol, hypervigilance, low activity ratings, and high emotionality. This study is the first of its kind to suggest that the acquisition of dominance by a matriline is modulated by genetic influences and that it is likely that the serotonin system plays a role in this process.

Genetic Factors on Dominance with Rhesus Macaques

January 01, 2014 12:00 AM
Jason Lefrandt, Brigham Young University Social and Behavioral Sciences Dominant behaviors frequently occur in both human and non-human primates. In the non-human primate world, high and low dominance rankings are rated through interactions recorded within the group, specifically, aggressive and submissive behaviors. Dominance within Rhesus macaques (Macaca mulatta) also tends to be governed by a matrilineal effect: meaning that if two monkeys are in the same family, than both monkeys will show similar rankings within the group. This current study looks into how genotypic variables correlate with overall behavioral expression in dominance. Utilizing archived dominance and genetic data from the National Institute of Health including serotonin, MAO-A, and rearing, we analyzed the correlations with social dominance rankings of rhesus macaques. In order to control for matrilineal effects within established groups, all subjects were placed in smaller, newly formed social groups. This was done in order to facilitate great analyses of genetic influences on dominant behavior. Our original hypothesis was that macaques with long homozygote serotonin for the long allele; were mother-reared; and have the MAO-A gene will have high social dominant rankings. On the contrary, our preliminary findings have shown that subjects who were reared by mothers who were not genetically their own tend to show more dominant related behaviors, and are subsequently rated much higher than those subjects who were mother-reared or peer-reared.

The Education Wishes of Welfare Recipients

January 01, 2014 12:00 AM
Wendy Hendley, Utah Valley University Social and Behavioral Sciences The Personal Responsibility and Work Opportunity Reconciliation Act (PRWORA) passed in 1996 changed welfare dramatically. Meant to stop welfare fraud and dependency, it put into place numerous restrictions and promoted work, which meant that people on welfare, usually single mothers, were forced to participate in job-search activities in order to qualify for benefits. As a result, welfare recipients’ opportunities to attend college have decreased. Research has shown a negative correlation between educational attainment and poverty, the higher a person’s education the less chance they have of living in poverty. The human capital theory proposes that investing in education increases labor market returns. Unfortunately, with PRWORA’s focus on work, welfare recipients are forced to find low-wage jobs, which is not enough to lift them out of poverty. Although numerous studies have focused on welfare recipients’ reduced chances of receiving an education, few have looked at the wishes of welfare recipients themselves. This quantitative descriptive study uses secondary data analysis from a study done by the University of Utah’s Social Research Institute in 2006, and answers the following three questions: (1) what is the current level of completed education of welfare recipients; (2) do welfare recipients have a desire to further their schooling; (3) what barriers do they feel are preventing them from achieving their goals? This study found that a high percentage of welfare recipients had a desire to further their schooling, with the number one obstacle being financial. There is a significant gap between the wishes of welfare recipients concerning higher education and what is actually happening in their lives.

Expressions of Identity; the Lens of Urban Migration in Three Northern Thailand Villages

January 01, 2014 12:00 AM
Jolysa Sedgwick, Brigham Young University Social and Behavioral Sciences Traditionally the Hmong in Thailand have made their living through subsistence farming and poppy cultivation. This arrangement had placed familial ties and religious influences at the center of Hmong cultural identity. Today, however, increased globalization has also meant a shift in cultural identity and priorities for the rising Hmong generation. This change is clearly seen in Nan Province where the decision to migrate or relocate to urban centers (such as Chiang Mai) for work is frequent. In the past, cultural identity and life decisions were heavily tied to kinship and religious influences. However, with the onset of globalization, the Thai State and current popular culture are becoming increasingly important to Hmong cultural identity and are becoming increasingly higher priorities in the lives of the Hmong who leave their childhood villages to pursue economic advancement and other activities in urban centers. In order to investigate this cultural shift, I conducted an ethnographic field study among Hmong living in three rural villages in Nan Province and among Hmong individuals in Chiang Mai. Using ethnographic field methods, I collected and analyzed the stories of those who decided or are in the process of deciding to relocate to Chiang Mai. In this paper, I present findings that support a shift in cultural priorities for those participating in urban migration and how that shift is influenced by increased global technology and connectivity. I explain that this shift is integral to understanding what the future will hold for the minority Hmong population in Thailand.

Religiosity and Attitudes Towards Cosmetic Surgery among Latter-day Saint Women

January 01, 2014 12:00 AM
Danielle Jennings, Utah Valley University Social and Behavioral Sciences The popularity of surgical cosmetic procedures continues to climb in the U.S. (ASPS, 2012) and in other industrialized economies (ISAPS, 2011). This includes women in conservative cultures like Morocco and Afghanistan (Women of Afghanistan, 2012). This research was undertaken to examine attitudes towards plastic surgery among women who are members of the LDS Church. Utah boasts one of the highest concentrations of plastic surgeons in the U.S. (Lim, 2011) and is also majority LDS (Phillips and Cragun, 2011), rendering it ideal for this study. Data regarding attitudes towards surgery and levels of religious participation were collected from LDS women [n = 100] and men [n = 25] in Utah through a pilot survey administered in spring, 2013. The sample included women 19 — 81 years of age, 64% of whom were married, and 63% had grown up in Utah. Results indicated levels of religious participation were in keeping with other research involving Mormons (Hill et al., 2008) and 67% of women knew a female member of the Church who had had cosmetic surgery. Attitudes towards surgery varied by age and marital status. A second survey was created and administered via Qualtrics to LDS women [n =473] and men [n = 116] across the U.S. Results suggest variation in attitudes by geographic location, along with variation by gender, age, marital status, and familiarity with surgery. These results suggest aspects of Mormon life in Utah contribute to the popularity of surgery among Church members. These may include the pressures of dating and earlier ages at marriage (Maffly, 2010), coupled with demographic changes (Cragun and Phillips, 2011), as well as earlier ages at first birth of children (Davidson, 2008).

PTSD/Depression and the Student Veteran’s Academic Performance

January 01, 2014 12:00 AM
Kent Hinkson, Utah Valley University Social and Behavioral Sciences Post-traumatic stress disorder (PTSD) and depression both have individually strong relationships with academic performance and achievement. However, when considered together, the combination is associated with worse measures than either condition alone. Recently it has been suggested that student veterans may have elevated rates of PTSD and depression, which makes these conditions points of particular interest when looking factors that affect achievement and performance in school.

What is Conversion: Understanding the transition to Christianity and Messianism amongst Hmong

January 01, 2014 12:00 AM
Lindsey Fields, Brigham Young University Social and Behavioral Sciences For my senior thesis in anthropology, I conducted fieldwork in a small Hmong village in northern Thailand studying the process of religion conversion. Traditionally, Hmong people practice a mixture of spirit rituals and ancestral worship known as Dab Qhuas and classified as shamanism. Within the past fifty or so years, other religious groups have emerged in the village both Christian sects and Hmong messianic groups. Though many in the discipline of anthropology argue that conversion is a break from traditions of the past, I observe that Hmong of this village in Thailand undergo a much more syncretic type of conversion. Though they identify as either Christian or of a Messianic sect, much of their practices and ideology retain elements of their shamanist past. Though they stress their differences in doctrine and practice, much of the ontology permeating shamanism and Hmong culture is still very much present. In order to better examine this phenomenon, I will focus the beliefs and practices in both Is Nbis and Christianity that take on slightly different forms in each religious practice, yet, still maintain some of the same ideologies. Rituals merely shift in order to fulfill the same metaphysical needs. By studying new practices that retain much of the feel of old culture rituals, I hope to illustrate that these Hmong are not as far removed from their traditional roots as they imagine themselves to be.

Maternal Directives as Predictors of Defiance Aggression in 2 Year Olds.

January 01, 2014 12:00 AM
Mitchell Reid, Utah State University Social and Behavioral Sciences Chronic childhood aggression can be the beginning of a developmental trajectory that begins with minor aggression, moves on to physical fighting, and then to violence (Loeber & Farrington, 2000). Behaviors during toddlerhood may be more malleable than later in childhood (Reid, 1994). To better understand what predicts children’s early aggressive behavior we examined the role of parenting behaviors, parent mental health, and child characteristics in a sample of toddlers. Sixty-five mothers and their toddlers between the ages of 17 and 24 months (60% female) participated in the study. Mother-child dyads were videotaped during teaching and clean-up tasks. Mothers also responded to several questionnaires to assess toddlers’ social-emotional behaviors, language development, attachment security, and temperament and their own parenting stress and depression. The teaching and clean-up tasks were coded for maternal language supporting behaviors such as asking questions and providing praise, directives, expansions, and labeling. We examined the correlations between the independent maternal (depression, parenting stress, and language supporting behaviors) and child (age, gender, language development, temperament, and attachment security) variables and the dependent variable of aggression/defiance. Correlations between attachment security (r = -.28, p =.03) and maternal directives during the teaching task (r = .33, p =.01) and during the clean-up task (r = .39, p =.00) showed statistical significance. We included these variables in a regression model and found that attachment security and maternal directives during the teaching and clean-up tasks accounted for 29% of the variance in maternal reports of toddlers’ aggression and defiance. These results suggest that toddlers with greater attachment security and with mothers who use fewer directives in everyday tasks are rated as less aggressive and defiant than those with less attachment security and with mothers who use more directives. The full regression model and early intervention implications will be presented.

CRH Promoter Mutation Inhibits HPA Axis Negative Feedback

January 01, 2014 12:00 AM
Patrick O’Connell, Brigham Young University Social and Behavioral Sciences Studies show that the CRH gene has several variants that are associated with psychopathological disorders and dysregulation of the HPA system, including a single nucleotide polymorphism (SNP) located on the promotor region (201 C/T). In rhesus macaques there is a orthologous SNP in the promoter region of the corticotrophin releasing hormone gene, CRH-248 C/T, that up-regulates the production of corticotrophin releasing hormone (CRH), inhibits the down-regulation of CRH expression in the presence of glucocorticoids, and is related to stress-induced alcohol consumption (Barr 2009). HPA Axis differences due to genotype will manifest initially in CRH concentrations, affecting the hypothalamic pituitary adrenal stress response (HPA axis). This effect translates peripherally in the form of plasma ACTH concentrations and subsequently in concentrations of plasma cortisol. 180 rhesus monkey subjects reared either with their mothers or in adult-absent, peer-only groups were genotyped and underwent a series of social separations from their attachment source. Blood samples were obtained one and two hours following separation to assay for ACTH and cortisol. Our analyses showed a significant effect of the orthologous CRH-248 genotype on plasma ACTH concentrations following repeated experimentally induced stress. Further analyses showed that this genotypic difference was only found however in the peer-reared subjects. Interestingly, analyses showed no effect of genotype on plasma cortisol levels. This finding suggests while negative feedback at the level of CRH is disrupted leading to pituitary hypersecretion of ACTH, intact negative feedback at the level of the adrenal cortex may moderate this dysfunction. Additionally, genotypic effects were only different after prolonged, chronic stress, as measured separations three and four. We suggest a GxE effect with CRH genotype effects only present after deleterious rearing experiences and chronic or repeated stressful situations.

Political Knowledge and Extra-Governmental Activism in Peru

January 01, 2014 12:00 AM
Lucas Brook, Brigham Young University Social and Behavioral Sciences Present day Peru finds itself in the midst of an interesting transition. Government decentralization is creating increased levels of political participation among the historically skeptical citizenry (Crabtree 2011). While some Peruvians participate through established institutional channels such as voting, campaigning or contacting political leaders, many others choose to engage in community improvement activities, private organization undertakings, or public protests as their avenue of political participation (Booth and Seligson 2009). What causes some Peruvians to participate in these extra-governmental activities while others use established government institutions? Although the causes of political participation are vast, this study focuses on political knowledge (both actual and perceived) as the independent variable. I hypothesize that Peruvians with less political knowledge (actual or perceived) understand (or at least perceive that they understand) less about Peru’s democratic institutions. Therefore, they will forgo participation through these established government institutions and employ extra-governmental means when participating politically. This hypothesis will be tested through the performing of regression analysis using data from Vanderbilt University’s AmericasBarometer survey project conducted in Peru in 2012. The results of this research will illustrate the effects that citizen’s political knowledge have on their participation in extra-governmental activism.

Truman, Kennedy, and Reagan: the impact of assassination attempts on the culture of the U.S. Secret Service

January 01, 2014 12:00 AM
Briana Bowen, Utah State University Social and Behavioral Sciences The U.S. Secret Service (USSS), one of the most elite security agencies in the world, is charged with protecting the President of the United States at any cost. Three American presidents fell to assassins’ bullets before the USSS was assigned the role of presidential protection; one more would later be slain despite USSS protection. This study examines the organizational culture of the USSS, employing the methodology of cultural topography to identify the agency’s norms, values, identity, and perceptual lens. We review three of the most impactful twentieth-century assassination attempts––two failed, one successful––and their formative effect on USSS organizational culture. Beginning with the lesser-known plot to assassinate Harry Truman, we examine the permanent authorization of the Presidential Protective Division. We apply our main focus to the assassination of John Kennedy, the USSS’s darkest hour and still its most powerful motivator. Lastly, we review the attack on Ronald Reagan and the development of the modern USSS security apparatus. Our final profile of USSS organizational culture gives insight into the agency’s strengths and weaknesses and informs our concluding recommendations for institutional change.

Bioartificial Organs

January 01, 2014 12:00 AM
Arthur Castleton, Brigham Young University Engineering More than one in three people die because of organ failures such as congestive heart failure. The major issues of heart transplants include a scarcity of donors, immunorejection and blood clot formation. Over the last decade bioartificial organs have emerged as a potential alternative to traditional transplantation because they eliminate the need for immunosuppressants, DNA testing, and the use of another human’s organs. In this study an economic, effective, and rapid decellularization process that produces minimal damage to a cardiac extracellular matrix (cECM) is described. In addition, a static blood thrombosis assay was used to verify the effect of exposed cECM on clotting. Also an aorta was recellularized and analyzed.

Non-Intrusive High Voltage Measurement Using Slab Coupled Optical Sensors

January 01, 2014 12:00 AM
Rex King, Brigham Young University Engineering The purpose of this research is to use slab coupled optical sensors (SCOS) to take high voltage measurements at high frequencies. Voltage dividers are currently used to take high voltage measurements. However, these voltage measurements are limited to bandwidths up to the range of 1MHz. SCOS sensors are electric field detectors developed by the BYU optics lab which couple light from a D-shaped fiber into a lithium-niobate slab wave guide. This light couples at certain frequencies and the frequencies at which these resonances occur will shift in proportion to the applied electric field. The electric field measurement can be used to measure voltage.

Piezoelectric Foam Sensors and Their Application in Sport Related Concussions

January 01, 2014 12:00 AM
Parker Rosquist, Brigham Young University Engineering This paper presents a newly discovered class of foam-based nano-composite materials with self-sensing properties. By embedding nano-particles in high-elongation foams, materials are created that display piezoelectric characteristics when any deformation is applied. When used in place of regular padding materials, they become impact sensors for a range of applications. The physics behind the phenomenon, and the optimization of the material response, are explored in this article.

Characterizing Electric Fields within an Ion Trap Using Optical Fiber Based Sensors

January 01, 2014 12:00 AM
LeGrand Shumway, Brigham Young University Engineering Ion traps are widely used in the field of mass spectrometry. These devices use high electric fields to mass-selectively trap, eject, and count the particles of a material, producing a mass spectrum of the given substance. Because of the usefulness of these devices, technology pushes for smaller, more portable ion traps for field use.