Digital Commons Network^™

A Bayesian Variable Selection Method With Applications To Spatial Data, Xiahan Tang

Graduate Theses and Dissertations

This thesis first describes the general idea behind Bayes Inference, various sampling methods based on Bayes theorem and many examples. Then a Bayes approach to model selection, called Stochastic Search Variable Selection (SSVS) is discussed. It was originally proposed by George and McCulloch (1993). In a normal regression model where the number of covariates is large, only a small subset tend to be significant most of the times. This Bayes procedure specifies a mixture prior for each of the unknown regression coefficient, the mixture prior was originally proposed by Geweke (1996). This mixture prior will be updated as data becomes …

Rhythm And Movement: The Lighting Design For "Eurydice", A Living Poetic Metaphor, Emily Rachel Clarkson

Graduate Theses and Dissertations

This thesis will delve into the historical context, analysis, design process and execution of the lighting design for the University of Arkansas’ production of Sarah Ruhl’s Eurydice. Special care will be taken to document an exploration of the challenges faced by this production during research, design meetings as well as throughout the implementation of this design. This document will seek to answer the questions: how does one design the lighting for a show that is in and of itself a metaphor? When each scene requires its own striking visual, how does the designer weave the play together so that it …

Remote Sensing Insights Into Storage Capacities Among Plains Village Horticulturalists, Adam Wiewel

Graduate Theses and Dissertations

Maize was a fundamental component of the diet and economy of Middle Missouri Plains Village groups, sedentary farmers with settlements along the Missouri River during the last millennia. More than a century of study has contributed to our understanding of agricultural production among these peoples, but little effort has been made to consider temporal variation in production. Such an understanding is crucial to examining changes that occurred before and after the arrival of colonists and their trade goods in the seventeenth century. Plains archaeologists have suggested that the storage capacity of Middle Missouri villages increased during the sixteenth through the …

White Power In Context: The Structural Correlates Of White Power Support Events In The United States, 2012-2015, Drew Cormac Medaris

Graduate Theses and Dissertations

Much of the prior research on white power groups focuses on very rare outcomes – criminal events, especially violent ones – without as much attention devoted to the more common or fundamental activities that often work to start the mobilization process for ethnocentric groups and the individuals associated with them. Broadly, the goal of the current study is to fill this gap in knowledge by integrating prominent criminological theories and themes drawn from the Social movement literature in order to explore the geographic distribution and macro-level correlates of ideologically-motivated white power movement activities. Specifically, I implement content analysis techniques of …

Environmental And Climatic Constraints On Large-Scale Camelina Production In Eastern Arkansas, Benjamin Robert Tracy

Graduate Theses and Dissertations

Camelina sativa is a cold weather crop that is typically grown in semi-arid environments in the Western United States, usually as a spring crop, but sometimes during the winter. Research analyzing climate data and soil hydrology is important to better understand the environmental and terrain conditions necessary for Camelina farming wherever it is proposed for large-scale production. This study focused on various conditions and constraints pertaining to the potential for Camelina as a crop biofuel in Eastern Arkansas. Due to interest in the economic potential of crop biofuels in this area, and in particular the low input costs for Camelina, …

Use Of The Silver-Level Arkansas Career Readiness Certificate As A Pre-Hire Screening Tool, Bentley E. Wallace

Graduate Theses and Dissertations

At a statewide level in Arkansas, the Arkansas Career Readiness Certificate (ACRC) is marketed as a means for assessing and exhibiting individual worker skill levels and as an additional aggregate credential to be presented alongside high school and college degree attainment levels. Employers from multiple sectors use the ACRC as a pre-hire screening tool and to determine incumbent worker eligibility for advancement.

Despite having been in place in the state for nearly a decade with over 65,000 Arkansans earning an ACRC, prior to this study no research had been conducted to determine the effectiveness of the ACRC as a pre-hire …

Using Cross-Sets For Paleodischarge Estimation And Paleocurrent Vectors In The Parthenon Sandstone, Northwest Arkansas, Sean Robert Parry

Graduate Theses and Dissertations

In this thesis, set thicknesses are used to estimate the paleohydraulics (paleodischarge and give magnitudes for paleocurrent directions) of the ancient river system which deposited the Parthenon Sandstone in northwest Arkansas. Set thickness is the vertical thickness of a group of strata conformable series (Mckee and Weir, 1953); set thickness represents truncated dunes. The goal of this thesis is to: 1) obtain paleodischarge estimates of the Parthenon sandstone via cross-sets and compare the results with previously calculated discharge estimates which use basin area to discharge collation techniques and 2) use paleodischarge estimates calculated within this thesis to give magnitude to …

Fleeing To Fault Zones: Incorporating Syrian Refugees Into Earthquake Risk Analysis Along The East Anatolian And Dead Sea Rift Fault Zones, Bradley Wilson

Graduate Theses and Dissertations

The influx of millions of Syrian refugees into Turkey has rapidly changed the population distribution along the Dead Sea Rift and East Anatolian Fault zones. In contrast to other countries in the Middle East where refugees are accommodated in camp environments, the majority of displaced individuals in Turkey are integrated into local cities, towns, and villages—placing stress on urban settings and increasing potential exposure to strong earthquake shaking. Yet, displaced populations are not traditionally captured in data sources used in earthquake risk analysis or loss estimations. Accordingly, this study presents a district-level analysis assessing the spatial overlap of earthquake hazards …

Temporal Co2 Variations And The Influence Of Bat Colonies In Speleogenesis: Continuous Co2 Monitoring In War Eagle Cavern, Arkansas, Ginny Sue Holcomb

Graduate Theses and Dissertations

Dissolved concentrations of CO2 in a karst aquifer are a major control on calcite dissolutional processes, as CO2 combines chemically with water to form carbonic acid. As increasing amounts of CO2 are added to the system, greater resultant water aggressivity generates greater rates of dissolution. Spatial and temporal variations in carbon flux through the system may occur over a range of time scales, and high-resolution data collection is needed to truly understand and characterize such variability. Continuous CO2 monitoring in War Eagle Cavern, Arkansas, will suggest a number of influential parameters with varying degrees of importance throughout an annual cycle. …

A Gis Approach To Modeling Groundwater Levels In The Mississippi River Valley Alluvial Aquifer, Josef Orion Lilly

Graduate Theses and Dissertations

Groundwater depletion, a subject of growing concern for a significant portion of Arkansas, may lead to future economic challenges for the Arkansas Delta region. The Mississippi River Valley Alluvial Aquifer is the uppermost aquifer and features the largest groundwater capacity in the Mississippi Embayment Aquifer System. The Mississippi River Valley Alluvial Aquifer, commonly referred to as the “alluvial aquifer”, spans 53,000〖 km〗^2 underlying portions of Arkansas, Kentucky, Louisiana, Mississippi, Missouri, Illinois, and Tennessee. As the alluvial aquifer trends southward for approximately 250 miles alongside the Mississippi River, its geographical extent ranges from 50 to 125 miles wide. There is a …

"Good To Think With": Women And Exempla In Four Medieval And Renaissance English Texts, Jennifer Fish Pastoor

Graduate Theses and Dissertations

This dissertation examines four English texts—Beowulf; Ancrene Wisse; Geoffrey Chaucer’s Canterbury Tales’ Man of Law’s Tale and Second Nun’s Tale; and Richard Hyrde’s English translation, The Instruction of a Christen Woman, of Juan Luis Vives’ De Institutione Feminae Christianae—in terms of their use of exempla related to women. These texts all find women good “to think with,” to use, from The Body and Society, Peter Brown’s appropriation of Levi-Strauss’s famous wordplay. The ways in which these Old English, Middle English, and modern English texts portray women’s lives and bodies as a gateway into thought about the Christian life are also …

Ecological Approaches To Modernism, The U.S. South, And 20th Century American Literature, Justin Ford Tinsley

Graduate Theses and Dissertations

This project seeks to draw from the insights of the emerging scholarly discipline known as ecocritism, study of the relationship between human and nonhuman in all arts and in all diverse forms, and apply them to the study of a specific regional art, that of the U.S. South. As an interrogation of the human / nonhuman binary, ecocriticism is intrinsically intertwined with the concept of place. Southern studies—having long explored the diversity (in terms of both human experience and geographical terrain) characterizing the region—offers ecocriticism a ripe testing ground for theoretical mergers and analytic applications. Both fields celebrate hybridity, multiplicity, …

Eveleth, Minnesota: A Portrait Of My Home Town, Judith I. Luna

Graduate Theses and Dissertations

This 30-minute documentary film provides snapshots of the small northeastern iron mining town of Eveleth, Minnesota, on the Mesabi Iron Range. It uses a two-pronged approach: 1) a first-person return to the town by the filmmaker almost 50 years after graduating from high school to see how the town may have changed, 2) a look at some historical and cultural factors which made the town what it was when the filmmaker was growing up and what continues to animate the town in the face of iron mining’s decline and rebirth. The latter include the immigrant experience and influence as the …

Eucalyptus In Kenya; Impacts On Environment And Society, Brandy M. Garrett Kluthe

Graduate Theses and Dissertations

Eucalyptus trees were introduced to Kenya a little over a century ago. European colonization along with the development of a railway system increased the demand for a fast growing wood source. The expansion of the tree across the fertile lands in Kenya raises concerns about the environmental impact on ecosystems where it has been introduced. These concerns include degraded soils, loss of water resources, co-introduction of ectomycorrhizal species, and allelopathy. Economic benefits to local landowners were also explored as well as the potential for large Eucalyptus woodlots to maximize the sequestration of CO₂ from the atmosphere. This was examined through …

Lidar-Assisted Extraction Of Old Growth Baldcypress Stands Along The Black River Of North Carolina, Weston Pierce Murch

Graduate Theses and Dissertations

The remnants of ancient baldcypress forests continue to grow across the Southeastern United States. These long lived trees are invaluable for biodiversity along riverine ecosystems, provide habitat to a myriad of animal species, and augment the proxy climate record for North America. While extensive logging of the areas along the Black River in North Carolina has mostly decimated ancient forests of many species including the baldcypress, conservation efforts from The Nature Conservancy and other partners are under way. In order to more efficiently find and study these enduring stands of baldcypress, some of which are estimated to be more than …

Stream Microbial Communities As Potential Indicators Of River And Landscape Disturbance In North-Central Arkansas, Wilson Howard Johnson

Graduate Theses and Dissertations

In the past decade, 29 shale basins have been actively developed across 20 states for extraction of natural gas (NG) via horizontal drilling/hydraulic fracturing (=fracking). This includes ~5000 wells within the Fayetteville shale of north-central Arkansas. Development often impacts both river- and landscapes, and management requires catchment-level evaluations over time, with organismal presence/absence as indicators. For this study next-generation sequencing was used to identify/characterize microbial communities within biofilm of eight Arkansas River tributaries, so as to gauge potential catchment influences. Streams spanned a gradient of landscape features and hydrological flows, with four serving as ‘potentially impacted catchment zones’ (PICZ) and …

Baha’I Sacred Architecture And The Devolution Of Astronomical Significance: Case Studies From Israel And The Us, Michael Steven Meizler

Graduate Theses and Dissertations

Sacred architecture is a complex conglomerate of different ideals of a faith. Within modern terms, the Baha’i faith is an excellent example of modern sacred architecture. Within ancient times the architecture of temples and shrines oftentimes had celestial alignments meant to connect the adherent to the gods. With this in mind, the Baha’i faith is evaluated with the use of cartography, celestial measurements, orthophotography, and archival research to evaluate the significance of the Baha’i sacred architecture and the symbolism embedded within it. The Baha’i faith came out of Persia during the 19th century and relocated to Israel late in that …

The Dirt On The Collins Mounds Site, Carmelita Angeles

Graduate Theses and Dissertations

Building monumental architecture has been one method used by humans to rise above an earthbound existence. In the United States, large earthen mounds were constructed from the Archaic period to the Mississippian period. The Collins Mound Site in Arkansas was recently dated to the Late Woodland period. For this study, soil samples were extracted from the northern section of the site for description and particle-size analysis. Erosion from plowing, wind, water, and gravity is the most likely process causing a decreased mound height and increased basal diameter. Mound fill likely originated near the river for two of the mounds and …

Why We Follow: Exploring How Culture Shapes Users’ Motivation For Following Sport Organizations On Twitter And Weibo, Bo Li

Graduate Theses and Dissertations

The purpose of this dissertation was to explore how culture shapes Social media users’ usage as they follow sport organizations on two similar microblogging services - Twitter and Weibo. In particular, the study attempted to measure whether Social media users exhibited different usage pattern, points of attachment, and usage motivations within two different cultural environments known as individualism and collectivism.

The Los Angeles Lakers’ Social media followers were selected and invited to participant in this study. There were 839 the Lakers’ Weibo followers and 334 Twitter followers who completed an online survey facilitated on Qualtrics. The results of Multivariate analysis …

Incorporating A New Class Of Uncertainty In Disaster Relief Logistics Planning, Emre Kirac

Graduate Theses and Dissertations

In recent years, there has been a growing interest among emergency managers in using Social data in disaster response planning. However, the trustworthiness and reliability of posted information are two of the most significant concerns, because much of the user-generated data is initially not verified. Therefore, a key tradeoff exists for emergency managers when considering whether to incorporate Social data in disaster planning efforts. By considering Social data, a larger number of needs can be identified in a shorter amount of time, potentially enabling a faster response and satisfying a class of demand that might not otherwise be discovered. However, …

Place(Ment), Ashley Lynn Byers

Graduate Theses and Dissertations

Throughout her time at the University of Arkansas Master of Fine Arts program, Ashley Byers has been creating work about the folklore, landscape, and people of the Ozarks. Though she continues to create work with the Ozarks in mind, it became a motif used for a broader conversation about the ad hoc, holiness, painting, landscape, the figure, and intimacy.

In many ways, the concepts within her work are born out of the Ozarks.

When can remnants come together to become more than the sum of their parts? Derelict, easily dismissed objects, when set in the right context or viewed through …

Walking In American History: How Long Distance Foot Travel Shaped Views Of Nature And Society In Early Modern America, Brian Christopher Hurley

Graduate Theses and Dissertations

The industrialization of transportation, first with railroads, and then with automobiles, took Americans away from foot transport, changing how Americans interacted with one another and viewed their surroundings. The dissertation traces the walking trips of five central figures in this era of mechanized transport, the personal impact of their experiences while walking through a land they were accustomed to skimming across, and the ways in which these personal revelations led to changes in the national consciousness. Walking upright was central to the development of homo sapiens as a species, and shaped the way they interacted with their environment. Certain aspects …

The Stories Of Junot Díaz: Genre And Narrative In Drown And This Is How You Lose Her, Luis Fernando Marin

Graduate Theses and Dissertations

This thesis examines how Junot Díaz creates and constructs his literary alter-ego and narrator, Yunior de las Casas, and examines the Social and cultural aspects, such as race, ethnicity, and gender, that condition or influence Yunior’s construction. I argue that Díaz uses the short story as a subversive genre and modernist narrative techniques, such as shifts in space-time and focalization, to reflect Yunior’s diasporic, fragmented subjectivity. My analysis includes narratological and generic readings of Drown and This Is How You Lose Her, with a brief look at The Brief Wondrous Life of Oscar Wao, paying particular attention to Yunior as …

Isotopic Identification Of Multiple Contributors Of Metal Ions In Mississippi Valley-Type Ore Deposits Along The Cincinnati Arch In South-Central Kentucky, William Travis Garmon

Graduate Theses and Dissertations

Mississippi Valley-Type (MVT) ores are economically-viable deposits of sulfide minerals, often dominated by sphalerite (zinc-sulfide) in carbonate facies, and galena (lead-sulfide) in siliciclastic facies. MVT ores precipitate from migrating fluids, which carry base metals often complexed with chlorine ions within a basinal brine. This study identifies metal-contributing source-regions of the Burkesville MVT deposit using Pb-isotope ratios within sphalerite samples collected from the Burkesville deposit. The deposit is found in south-central Kentucky within the Middle-Tennessee ore district along the crest of the Cincinnati Arch, which is the anticlinal divide between the Appalachian Basin and the Illinois Basin. Competing theories argue that …

Divining The Southwest: Liminality, Pragmatism, And Regionalism In "Death Comes For The Archbishop", Alex C. Blomstedt

Graduate Theses and Dissertations

This work aims to explore the themes of pragmatism and liminality, particularly as they pertain to spirituality, in Willa Cather’s Death Comes for the Archbishop. By taking an interdisciplinary critical approach to the novel, I will synthesize its spiritual affect into a sensibility called “pragmatic liminality.” Finally, I will connect this sensibility to other works in the Southwestern literary canon and elucidate the foundational importance that pragmatic liminality has to the Southwestern “sense of place” and its role in the larger narratives of regionalism in American literature.

Shared Perspectives Of Divided Space: Perceptions Of The Urban Environment Among Jerusalemites, Andie Duplantis

Graduate Theses and Dissertations

Multidisciplinary research and philosophical discourse have long explored the complex relationship between the objective environment and subjective human perception. No two humans perceive, experience, and form attitudes about the same phenomenon in exactly the same way. Individual demographics (sex, age) and group identity (culture, religion, ethnicity, political ideology) have been shown to have a profound effect on perception of phenomena; research has also focused on the effect of the physical environment itself. Differences in perception, experience, and resulting behavior have great implications for governance, particularly in regards to planning and development. Recognizing these differences, modern urban planning increasingly seeks to …

The Effect Of The Expanded Food And Nutrition Education Program On Participants’ Diet Quality: Does Supermarket Access Matter?, Rachel Ann Spencer

Graduate Theses and Dissertations

This project assesses the effectiveness of the Expanded Food and Nutrition Education Program (EFNEP) within the context of supermarket access. EFNEP is a national community nutrition education program that strives to give participants the tools to live healthier lives. Analysis was performed on participants from 16 Arkansas counties that completed EFNEP during 2013 or 2014. The program outcome is measured in terms of the change in Healthy Eating Index (HEI) as calculated from 24-hour diet recalls at program entry and exit. Supermarket locations were obtained from the USDA Food Nutrition Service’s SNAP Retail Locator and represent the food environment near …

Spinach (Spinacia Oleracea L.) Seed Germination And Whole Plant Growth Response To Heat Stress And Association Mapping Of Bolting, Tallness And Erectness For Use In Spinach Breeding, Jessica Chitwood

Graduate Theses and Dissertations

The effect of temperature on spinach seed germination was evaluated using a total of nine spinach genotypes and seven temperatures: 10, 15, 20, 25, 30, 32, and 35 oC in growth chambers. Genetic variation was observed. ‘Donkey’, ‘Marabu’, and ‘Raccoon’ showed higher seed germination percentage with over 70% at 30 and 32 oC, indicating the three spinach genotypes had heat-tolerance for germination. However, all spinach genotypes except ‘Ozarka II’ had lower germination percentages of less than 30% while ‘Ozarka II’ had 63% at 35 oC, indicating ‘Ozarka II’ may be a source of heat-tolerance for seed germination.

Seed germination may …

Movements, Music, And Meaning: A Comparative Analysis Of Cultural Narratives In Vietnam Era And Post-9/11 Anti-War Music, Jonathan Nathaniel Redman

Graduate Theses and Dissertations

This thesis examines the presence of widely circulating cultural narratives in the lyrics of approximately eighty anti-war songs from the Vietnam and post-9/11 eras. Unlike prior movements and music research, this thesis privileges culture over movements and views movements as cultural antennae both picking up on trends and cultural narratives, and broadcasting their own altered cultural meanings back into the “cultural airways.” It sees music as a cultural medium which acquires cultural meanings from its surroundings, alters those meanings, synthesizes new ones, and perpetuates old ones. Drawing on comparative and narrative analysis approaches informed by grounded theory techniques, this thesis …

Trade And Transport In Late Roman Syria, Christopher Wade Fletcher

Graduate Theses and Dissertations

Despite the relative notoriety and miraculous level of preservation of the Dead Cities of Syria, fundamental questions of economic and subsistence viability remain unanswered. In the 1950s Georges Tchalenko theorized that these sites relied on intensive olive monoculture to mass export olive oil to urban centers. Later excavations discovered widespread cultivation of grains, fruit, and beans which directly contradicted Tchalenko’s assertion of sole reliance on oleoculture. However, innumerable olive presses in and around the Dead Cities still speak to a strong tradition of olive production. This thesis tests the logistical viability of olive oil transportation from the Dead Cities to …