Social and Behavioral Sciences Commons^™

Using Soil Geospatial Properties And Environments To Explore Microbial Diversity, Sharon Faye Smith

Graduate Theses and Dissertations

Soil microorganisms help maintain nutrient cycling, control carbon sequestration, impact plant productivity, and influence several soil chemical and physical properties; yet, the processes that control the microbial composition of soil and how environmental changes may affect the composition and activity of these organisms at different scales remains a difficult and intriguing puzzle for soil scientists, ecologists, and modelers. Wetlands are endangered and important ecosystems that provide several services, which are directly linked to soil function. However, few wetland assessments consider the soil environment and microbial ecology. Linking soil microbial community composition and distribution patterns to soil physio-chemical properties would provide …

Far-Right Extremism In America: A Geospatial Analysis Of Incident Distribution, Meredith Leann Lerma

Graduate Theses and Dissertations

There has been little empirical research on the spatial relationship of violent far-right extremism. Previous studies have only focused on portions of far-right violent incidents, such as homicides, or amalgamated all far-right extremist activity, including legal incidents. This study uses data from the Extremist Crime Database (ECDB) and Southern Poverty Law Center (SPLC) in a temporal frame of 2000 to 2018 to test the relationship of violent incidents against geographic and social factors. The goal is to explore the relationships between macro-level factors and violent far-right extremist incident. The research determines that the presence of hate groups, higher immigrant populations, …

Landscapes Of Danger: A Geospatial Analysis Of Perceived And Realistic Risk In Bryce Canyon National Park, Tia Francis

Graduate Theses and Dissertations

The quantification of risk has inspired a wide breath of literature from the physical sciences, social sciences, and interdisciplinary disciplines like geography. Many attempts to estimate risk via natural hazards either focus on quantifying realistic risk or perceived risk of lay persons, with very little overlap between these paradigms. Due to this, a considerable knowledge gap exists within perceived risk and natural hazards research. This study aims to provide a comprehensive, risk estimation and assessment strategy through a multi-hazard risk assessment of Bryce Canyon National Park (BRCA). This case study analyzed knowledge of risk among visitors with perception surveys and …

Show Me St. Louis: Risk Assessment Through An 80-20 Framework, Hannah K. Steinman

Graduate Theses and Dissertations

Researchers of crime and place have long explored the uneven distribution of crime within the built environment and repeatedly identified where crime is concentrated. The longstanding question pertaining to crime at the micro-level, is why crime concentrates. This study operates within environmental criminology, through an 80-20 framework, to explore the spatial distribution of crime across streets with crime generators and attractors in St. Louis, Missouri to fill this gap in the literature. A conjunctive analysis of case configurations is used to identify unique high and low-crime street profiles. Crime data from 2018 – 2019 are used from the St. Louis …

An Evaluation Of Unmanned Aircraft Systems' Ability To Assess Stripe Rust In Large Wheat Breeding Nursies, Jamison T. Murry

Graduate Theses and Dissertations

Stripe Rust (Puccinia striiformis f. sp. tritici) is a foliar disease that significantly impacts global wheat production, and resistant cultivars provide the most efficient method of control. High-throughput phenotyping using unmanned aircraft systems (UAS) offers a potentially more efficient method for field-based phenotyping compared to visual assessment. Here we tested the ability of remote sensing to predict stripe rust severity in a diverse population of 594 soft red winter wheat lines, planted in single-rows, and evaluated them by visually rating stripe rust intensity and remotely using the dark green color index (DGCI), normalized difference vegetation index (NDVI) and blue NDVI. …

Spatial Analysis Of Soil Creep Rates On Mount Sequoyah, Fayetteville Arkansas, Amy Suzanne Morris

Graduate Theses and Dissertations

Mount Sequoyah in Fayetteville, Arkansas, is a part of the Boston Mountains, which are considered a deeply dissected plateau. The area is prone to mass wasting, which is the general downslope movement of sediments, soils, and rock through different processes that cause instabilities along a hillslope, and in its soil and loose rubble mantle. For this study, we looked at soil creep, which is the small-scale movement of soil downhill because of gravity, wetting and drying cycles, and heating and cooling cycles.

By measuring the tilt of utility poles, we determined multiple causes of soil creep. The variables that are …

A Geospatial Analysis Of Safety And Risk Perception In The Buffalo National River, Julie Nicole Terhune

Graduate Theses and Dissertations

In 1972, the Buffalo River in Arkansas became America’s First National River. Since then, the Buffalo National River has become a beloved recreational retreat for locals and visitors alike. The Buffalo National River is home to incredibly scenic views and host to many outdoor activities, among them, hiking and floating. As with any confluence of nature and humans, there is great risk involved in all aspects of the park. Between 2011 and 2017, a total of 140 search and rescue missions were carried out. Some were resolved easily, but more serious accidents were not unheard of.

Risk perception studies are …

The Effects Of Urban Development And The Incidence Of Flooding And Discharge Changes From 1956-2016: A Case Study From Juan Diaz Township, Republic Of Panama, Virgilio De Jesus Quintero Rodriguez

Graduate Theses and Dissertations

The increase in flood occurrences in the Township of Juan Diaz has affected thousands of families and hundreds of businesses and has negatively impacted the lives of thousands of residents, who expect the worse every time there is a prolonged period of rain. Some of the residents lose their appliances, cars, furniture and houses every year. This study examines the relationship between urban development and flooding. Also, it addresses the influences of topography, green cover, population changes, runoff changes, and social dynamics on this relationship. This study implemented the use of thematic cartography, geographic information systems (GIS), personal interviews and …

The Rise Of Anti-Immigration Populist Radical Right Parties: The Effect Of The Syrian Conflict On Refugee Resettlement And Migration Policies In Germany And Austria, Sara Kouchehbagh

Graduate Theses and Dissertations

The effects of Syrian migration in Europe have revolutionized refugee resettlement globally. Most immigration and refugee problems have historically been settled similarly post WWII, however, Syria is the largest refugee crisis since WWII. It is important to learn how to respond to future conflicts with displacement and resettlement affecting Western countries that are unprepared to respond to a conflict of such magnitude. This thesis will compare previous conflicts and the Syrian conflict, while highlighting the resilient political momentum of reactionary new political groups in European states, particularly Germany and Austria.

The research and results from this study will include data …

Improving Earthquake Disaster Models With Post-Event Data: Insights From The 2015 Gorkha, Nepal Earthquake, Bradley Steven Wilson

Graduate Theses and Dissertations

Immense amounts of data are collected following earthquake disasters. Yet, it remains unclear how researchers’ might take full advantage of diverse post-disaster datasets. Using data from the 2015 Gorkha Nepal earthquake, this dissertation explores three ways in which post- disaster survey and assessment datasets can be used to inform models of seismic risk, vulnerability, and recovery processes. The first article presents an empirical analysis of scale issues in disaster vulnerability indices using a novel dataset of 750,000 households. This study finds that using aggregated household data to create social vulnerability indices can produce results that are meaningfully different from equivalent …

The Structure And Dynamics Of A River Delta Are Related Through Its Nourishment Area, Suggesting Optimality, Christopher A. Cathcart

Graduate Theses and Dissertations

Scaling relations in tributary network geomorphology are well understood with respect to optimality. However, the scaling relations between structure and dynamics in distributary network geomorphology are less well understood. This is primarily due to the fact that nourishment area boundaries are difficult to map compared to tributary network catchment area boundaries. Furthermore, most previous work has focused either on the distributary channel networks or the delta’s partitioning of discharge. Here we show that, on the Wax Lake Delta (WLD) in Louisiana, the asymmetry in nourishment areas and downstream nourishment boundary width (∏) at a channel bifurcation, acts as a control …

Dynamics Of Land Use, Environment, And Social Organization In The Sasanian Landscape Of Eastern Iraq—Western Iran, Mitra Panahipour

Graduate Theses and Dissertations

Understanding human-environment interactions has been one of the main challenges in archaeological studies over recent years. Past research on the Near Eastern territorial empires in general, and the Sasanian Empire in particular, primarily emphasized the dominant role of human on landscape transformation. In addition, politically centralized schemes such as agricultural intensification and expansion of water supply systems have been at the center of most of the discussions and remained the main hypothesis of the Sasanian land use practices.

This dissertation investigates population’s diverse responses to environmental variability during the Sasanian period (224-651 CE) across a landscape in eastern Iraq—western Iran. …

The Effects Of Geography And Proximity On Board Of Directors: An Exponential Random Graphs Approach, Panagiotis Giannakis

Graduate Theses and Dissertations

This dissertation aims at exploring how physical proximity, among other geographical elements, affects the synthesis of boards of directors, the decisions executives make, and, in general, organizations. Drawing on the rich literature in economic geography, these studies focus on re-evaluating the effects of geography on board of directors in the contemporary context characterized by significant technological advancements which is expected to minimize the effects of distance.

The first paper evaluates the geographic proximity effects on the likelihood of board interlock ties creation, while controlling for endogenous network processes. Additionally, all proposed network specifications are simulated in order to assess the …

Drug Trafficking, State Capacity, And The Post-Soviet Condition In The Kyrgyz Republic, Christopher George Cowan

Graduate Theses and Dissertations

Following the collapse of the Soviet Union, the newly independent states of Central Asia faced numerous challenges. These included cultivating new national identities and state capacity, managing new borders, and addressing issues of conflict and political violence. Converging with these challenges – a booming trade in opium and heroin originating in neighboring Afghanistan. Central Asia quickly became a key route for opiates originating in Afghanistan and transiting to Russia and Europe. The Kyrgyz Republic lies at the southeastern corner of this region, along one of the world’s busiest drug trafficking routes.

This thesis examines state and societal responses to narcotics …

Analysis And Conservation Of Native Forests At Kessler Mountain Fayetteville, Arkansas, Alan James Edmondson

Graduate Theses and Dissertations

Kessler Mountain in Fayetteville Arkansas has long been recognized for its beauty and natural resources. Parts of Kessler Mountain have been homesteaded and developed in the past, but most of the mountain has remained relatively undisturbed. The planned development of over 4,000 housing units to cover Kessler Mountain stimulated controversy and consideration of other management alternatives. A twist of fate involving an economic recession, a dedicated group of outdoor recreation enthusiasts, and environmental conservationists led to the permanent protection of 384 acres in the Kessler Mountain Regional Park. To help evaluate the natural resources at Kessler Mountain, forest composition, structure, …

The Image From The Road: Towards Mapping The Phenomenological, Rachel Anna Smith Loerts

Graduate Theses and Dissertations

An area of focus, used in early and contemporary forms of cognitive geography research, is the ‘cognitive map’, a concept that suggests “that people hold a map-like database in their minds to which they can add and use to tackle geographical tasks”. Kevin Lynch, an urban planner in the 1960s, was an early adopter of the cognitive map approach to reveal spatial cognition, what or how people see their environment, specifically cognition of the urban environment. Lynch’s research aimed to develop empirical methods, to identify how people make spatial relationships. Contemporary tools like machine learning are now considered relevant for …

Spreadsheets-In-Space: A Quantitative Exploration Of Movement, Currency Creation, And Conflict Within Eve Online, Christopher Alan Pryor

Graduate Theses and Dissertations

EVE Online is a massively-multiplayer online game with complex interactions between players and their unique, virtual environment. These relationships are the ongoing results of a conflict-driven economy, but they vary both in duration and by location.

This study attempts to quantify the direct effects of movement and indirect effects of conflict upon economic activity in the form of currency creation and delineate how successfully these relationships can be quantified by narrower time-spans and areas. Results of the mediation models used in this exploration indicate the changing relationship between movement (Ship Jumps), conflict (Ship Kills), and currency creation (Faction Kills) is …

Spatio-Temporal Reconstruction Of Remote Sensing Observations, Kamrul Khan

Graduate Theses and Dissertations

The USDA Forest Service aims to use satellite imagery for monitoring and predicting changes in forest conditions over time within the country. We specifically focus on a 230, 400 hectares region in north-central Wisconsin between 2003 - 2012. The auxiliary data collected from the satellite imagery of this region are relatively dense in space and time and can be used to efficiently predict how the forest condition changed over that decade. However, these records have a significant proportion of missing values due to weather conditions and system failures. To fill in these missing values, we build spaciotemporal models based on …

Decadal Land Surface Phenology And Water Quality In The Headwaters Illinois River Watershed, Justin Ray Rollans

Graduate Theses and Dissertations

Over 25 percent of the world’s population either lives on or obtains water from karst aquifers. The complex interactions between subsurface karst geologic features, the constant motion of the plant life cycle, and significant water resource demand all suggest the need to better define those interactions. The relationship of historical land surface phenology and water quality in karst topography were investigated in the Headwaters Illinois River watershed in Northwest Arkansas (NWA). This area represents high vulnerability to surface water and groundwater contamination, with both natural and anthropogenic processes such as over application of broil litter for enhanced cattle browse, affecting …

Keeping Pace With Relative Sea Level Rise: Marsh Platform Monitoring Shows Minimal Sediment Deficit Along The Louisiana Coast, Kelly Marie Sanks

Graduate Theses and Dissertations

Recent reports estimate that the marshes of the Mississippi Delta receive just 30% of the sediment necessary to sustain current land area1. An extensive monitoring campaign by the USGS and LCPRA provides direct measurements of sediment accumulation, subsidence rates, and deposit characteristics along the coast over the past 10 years2, allowing us to directly evaluate this sediment balance. By interpolating bulk density, organic fraction, and vertical accretion rates from 273 sites, a direct measurement of organic and inorganic sediment accumulation can be made. Results show that a total of 82 MT/year of sediment is delivered to the coast. Using a …

The Energy Yield Of Global Crops 1961-2016, Quinn Montana

Graduate Theses and Dissertations

It is often suggested that world food production must increase by 70%-100% or more by the year 2050 if we are to feed the anticipated world population at that time. To evaluate this claim, global crop production from 1961 to 2016 was inventoried using publicly available data from the United Nations Food and Agriculture Organization (FAO). To determine the adequacy of global crop output for humanity, annual global food crop production data (T y-1) were converted to energy yield in kilojoules (KJ y-1). These data were then compared to the annual metabolic energy requirement of the global human population. The …

Modified Landscapes, Esther Nooner

Graduate Theses and Dissertations

Modified Landscapes is a body of work that reflects serious thought regarding Nature and its future. My personal experience and beliefs are at the core of why I believe this subject to be of great importance and why it will sustain many artists’ investigations for the time to come. The influences that informed this process are explored through experiences I had traveling, reading and exploring the photograph as a material object. The manipulation of the photograph is meant to question the beautiful, untouched scene and break the Romantic gaze that is historically tied to representations of Nature and insist upon …

Decisions Set In Stone: Spatial Analyses Of Ozark Rock Art Sites, Elements, And Motifs With Gis, Jordan Lee Schaefer

Graduate Theses and Dissertations

This thesis uses Geographic Information Systems (GIS) to spatially analyze rock art distributions in the Salem Plateau section of the Arkansas Ozarks. Statistical tests, such as chi-square and t-testing, are applied to provide an objective view of rock art patterning in relation to the overall landscape. The data collected from these methods allow one to discern the locational preferences for rock art, which potentially reveal cultural details about the people involved with its creation. Multiple analytical perspectives are applied throughout, initially focusing on comparisons with expected values and random points. Later statistical tests use bluff shelter distributions as reference data …

Social Organization And Environmental Patterning At Tel Abu Shusha: An Integrated Spatial Approach To Survey Archaeology, Seth Price

Graduate Theses and Dissertations

Tel Abu Shusha, located in the Jezreel Valley of Palestine, is a large-scale archaeological site possibly identified as the cities of Biblical Gaba or Roman Gaba Hippaeon/Gaba Philippi. Surface archaeological survey of the surrounding area, conducted by the Jezreel Valley Regional Project during 2017, revealed extensive assemblages of visible settlement features dating primarily to middle and late Islamic periods. This research seeks to answer questions of settlement decision-making and societal organization, by integrating archaeological, textual, environmental, and geospatial data sources. In addition to visual interpretation, Kolmogorov-Smirnov nonparametric tests are used to gain insight on environmental settlement preferences; Ripley’s K analysis …

Sustainable Intensification Of Agriculture: Opportunities And Challenges For Food Security And Agrarian Adaptation To Environmental Change In Bangladesh, Aaron Michael Shew

Graduate Theses and Dissertations

This dissertation investigates three unique aspects of sustainable agricultural intensification (SAI) in the context of Bangladeshi rice production. The first article presents a qualitative analysis of SAI and farmer surveys in the embanked polder region of coastal Bangladesh. The second article investigates the global food security and environmental impacts of already adopted High Yielding Variety (HYV) rice and double-cropped rice systems in Bangladesh using a spatial partial equilibrium trade model and a Life Cycle Assessment (LCA). The final article demonstrates a remote sensing methodology for monitoring dry season rice production at 30 m resolution in Bangladesh using a harmonic time …

A Geospatial Study Of The Drought Impact On Surface Water Reservoirs: Study Cases From Texas And California, Zachary Asbury

Graduate Theses and Dissertations

Drought in Texas and California has been a long-term problem. Over the past 60 years reservoir construction has occurred to remedy the situation. Satellite imagery has been used historically to measure and monitor fluctuations in surface water reservoirs. This investigation integrates remote sensing and geographic information system (GIS) technologies to study the impact of drought on selected surface water reservoirs in San Angelo and Dallas in Texas, and Lake Oroville in California. Expansion and shrinkage over the 2005-2016 period reveal the concrete impact that drought, along with other factors, have on the selected lakes. Fluctuations in reservoir sizes during summer …

Towards Quantifying Relevant Land Cover Change: A Case Study In The Central Flyway Of The Monarch Butterfly, Hanna Lenee Ford

Graduate Theses and Dissertations

Over the past 20 years notable decreases in monarch butterfly populations have led researchers to begin evaluating the landscape for changes and seeking out opportunities for enacting conservation programs to better support their survival. The monarch butterfly has recently come under consideration for listing under the Endangered Species Act which has created a need for a more informed view of the landscape through which the migrate and breed, the central United States. In this research three spatially-explicit models are explored using the most applicable datasets currently available to address pressing policy and land manager decisions regarding monarch butterfly and pollinator …

The Effects Of Crystal Bridges In Downtown Revitalization Of Bentonville, Arkansas In The Last Decade, Korab Vranovci

Graduate Theses and Dissertations

Bentonville started the process of downtown revitalization in 2007 after they passed a bond measure. However, research on the impacts of the revitalization and the factors associated with it is limited or focused for the private sector. This study identified Crystal Bridges Museum of American Art as a catalyst for the process of downtown revitalization and aimed to fill the gap in urban development and economic opportunities that arose due to the museum.

Using the “Monitoring annual urban changes in a rapidly growing portion of Northwest Arkansas with a 20-year Landsat records” (Reynolds, Liang, Li, & Dennis, 2017) it is …

Gis Modeling Of The Prominent Geohazards In Arkansas, Kyle Walker Rowden

Graduate Theses and Dissertations

The State of Arkansas is prone to numerous geohazards. This thesis is a twofold study of prominent geohazards in Arkansas: the first fold includes a novel triggerless approach for mass wasting susceptibility modeling applied to the Boston Mountains in NW Arkansas, and the second fold is a GIS-based regression modeling of the extreme weather patterns at the state level. Each study fold is presented in this thesis as a separate chapter embracing a published peer-reviewed paper. In the first paper, I have used the analytical hierarchy process to assign preliminary statistical weights to the most cogent variables influencing mass wasting …

Geography Of The Middle East Through The Western Lens: A Survey Of Films Set In The Middle East And Filmed In The American Southwest, Jake Bryan Rowlett

Graduate Theses and Dissertations

Representation of cinematic geography is a struggle in the world of film: a power balance between the work of the filmmakers and the place itself. Often, the filmmakers tip the scales in their favor and the true nature of the place is lost in translation. Throughout the history of cinema, the geography of the Middle East has been manipulated into a vision designed for Western audiences that is strikingly disjointed from reality.

The foundation of modern Orientalist interpretations of the Middle East in film can be seen in the early decades of the film industry, through the “Biblical Epic,” and …