Digital Commons Network^™

Remote Sensing And Gis Study Of Hazards And Risks In East Africa, Hafid Nanis

Graduate Theses and Dissertations

East Africa encompasses numerous developing countries and involves one of the most active continental rifts on Earth; namely, the East African Rift System. This region is prone to diverse geohazards due to its geographical location at the plate boundary. Several damaging events had happened across the region and more are predicted to occur in the near future. Therefore, it is crucial to investigate, assess, and forecast natural hazards and potential risks in the region. In this dissertation, remote sensing and Geographic Information System (GIS) were employed to conduct three independent studies focused on assessing geohazards in east Africa. Each study …

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 …

A Macroevolutionary View On Extinction In Aves, Chiroptera, And Odonata, Peter Hasik

Graduate Theses and Dissertations

A central goal of conservation biology is to identify and understand the factors that lead to extinction. The Earth is currently undergoing a 6th mass extinction event, in large part because of human activity. In the last century, rates of extinction have increased anywhere from 8-100 times the background rate of 2 extinctions per 10,000 species every 100 years. However, there remains a debate over whether certain species are predisposed to a higher extinction risk. In particular, it is not known if the macroevolutionary history of a lineage is a major contributor to the probability of extinction, nor is it …

Geospatial Analyses Of Seismic Hazards And Risk Perception In Libya, Somaia Suwihli

Graduate Theses and Dissertations

Libya is not considered a highly active seismic region. However, several earthquakes of magnitude >5.0 have occurred there. This dissertation analyzes the seismicity of Libya in order to better understand earthquake hazards, related geomorphic features, and the current evolution of Libyan perceptions of seismic risk. The first article developed a baseline of past and current seismic inventory in Libya, which represented an assessment of Libya seismic hazard by translating, analyzing, and compiling historical sources and archaeological data. This study shows that Libya has experienced earthquakes in varying degrees since ancient times. Through the spatial and temporal distribution of earthquakes from …

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, …

Critical Peace Pedagogy In The Social Studies: A Peace-Oriented Approach To Critical Citizen Education, Matt Dingler

Graduate Theses and Dissertations

This two-article dissertation begins by providing a conceptual argument for the inclusion of Critical Peace Pedagogy (CPP) in social studies education. CPP represents the convergence of the peace education tradition and Paulo Freire’s critical praxis. I begin by aligning CPP to the philosophy, goals, and methods of instruction espoused by critical citizen educators seeking to further democracy and human rights. To demonstrate the feasibility of CPP integration within the social studies, I provide a model classroom approach framed according to a nationally recognized instructional design model. I close with a brief exposition on the importance of peace within education’s emerging …

The Shallow End Of The Deep South: Civil Rights Activism In Arkansas, 1865-1970, Sarah Riva

Graduate Theses and Dissertations

On April 7, 1968, Governor Winthrop Rockefeller claimed that “Arkansas today stands at the threshold of leading the nation...for a better America,” The Republican Arkansas Governor spoke on the steps of the state capitol at a memorial for the beloved civil rights leader Martin Luther King, Jr. who had been assassinated three days earlier. Rockefeller’s claim that Arkansas could lead the nation came just two years after the Student Nonviolent Coordinating Committee (SNCC) formally ended its work in the state to improve racial equality. Their efforts had seen widespread acceptance of integrated public facilities, increased voter registration and more meaningful …

The Formation Of Ottoman Sufism And Eşrefoğlu Rumi: A 15th Century Shaykh Between Popular Religion And Sufi Ideals, Baris Basturk

Graduate Theses and Dissertations

This dissertation evaluates a transformative period in the history of the Ottoman State in which the processes of Islamization and Turkification coincided with the expansion and imperialization of the Ottoman polity. This study focuses on an Ottoman Sufi figure, Eşrefoğlu Rumi (?-1469), who benefited form this context, embarked upon a mystical path, and authored seminal works that shaped Ottoman Sufism for generations. This dissertation discusses Eşrefoğlu Rumi’s role in the construction of Islamic orthodoxy based in his Sufi ideals which he disseminated to an Anatolian and Balkan Turkish-speaking Ottoman audience. The significance of this dissertation is that it emphasizes the …

The Postsecondary Enrollment Of Black American Men: The Perceived Influence Of Environmental Factors, David V. Tolliver, Iii

Graduate Theses and Dissertations

In the United States, there has been a consistent under-enrollment of Black American men who have enrolled and graduated from four-year colleges and universities. The result of this lack of educational attainment is problematic, as it can be seen in lower employment rates, higher under-employment rates, higher rates of incarceration, poorer health, and even a lower quality life. Institutional leaders and policymakers have struggled to find solutions for increasing the participation of Black American men with largely mixed results. Most of these programmatic attempts, however, have been limited in their approach and have not taken into account family and informal …

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 …

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. …

Use Of Acetolactate Synthase-Inhibiting Herbicides In Inzen Grain Sorghum (Sorghum Bicolor L. Moench Ssp. Bicolor), Hunter Bowman

Graduate Theses and Dissertations

Grain sorghum is typically grown as a rotational crop in Arkansas because of its many benefits, one being the effective control of Palmer amaranth through the use of atrazine. However, limited options exist for postemergence (POST) control of weedy grasses within the crop. Inzen™ grain sorghum is the result of a nicosulfuron resistant weedy sorghum biotype cross-bred with a commercial line of grain sorghum. Inzen™ allows for safe use of over-the-top applications of nicosulfuron within the crop. Nicosulfuron is an acetolactate synthase (ALS)-inhibiting herbicide, which has historically been used in corn for control of weedy grasses. Experiments were conducted in …

Food Safety Risk In An Indoor Microgreen Cultivation System, Gina Marie Misra

Graduate Theses and Dissertations

Microgreens are immature sprouts of edible plants, sharing some similarities with sprouted seeds and petite leafy greens. Since they are most often grown in containers in buildings or greenhouses, they present a new area for food safety research at the intersection of the built environment and produce farming. Contamination by human pathogens has been extensively studied in other types of produce typically eaten raw, including sprouted seeds, which have been implicated in numerous outbreaks of salmonellosis over the last several decades. There is a paucity of knowledge about the microgreen sector of the fresh-cut industry; thus, it was determined that …

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 …

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 …

Truck Activity Pattern Classification Using Anonymous Mobile Sensor Data, Taslima Akter

Graduate Theses and Dissertations

To construct, operate, and maintain a transportation system that supports the efficient movement of freight, transportation agencies must understand economic drivers of freight flow. This is a challenge since freight movement data available to transportation agencies is typically void of commodity and industry information, factors that tie freight movements to underlying economic conditions. With recent advances in the resolution and availability of big data from Global Positioning Systems (GPS), it may be possible to fill this critical freight data gap. However, there is a need for methodological approaches to enable usage of this data for freight planning and operations.

To …

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 …

A Phenomenological Study Of Students’ Advising Experiences In A Four-Year Centralized Advising Center, Nicole Rowan

Graduate Theses and Dissertations

The purpose of this study was to explore how undergraduate students experienced and understood academic advising within the context of a four-year centralized, primary role advising center at a public research university in the mid-south. This qualitative study included 13 undergraduate juniors or seniors from the liberal arts college of a large research university. Using phenomenological methods, I explored the lived experience of these students’ advising experiences through a series of focus groups and one-on-one interviews with the goal of understanding how academic advising impacted the students’ sense of connectedness to the university. Five themes emerged from these interviews: access …

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 …

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 …

Suitability Assessment For Integrated Urban Development In Makkah City Of Saudi Arabia, Mislat Alotaibi

Graduate Theses and Dissertations

Makkah – the third most populated city in Saudi Arabia with a population of 1,684,408 according to the 2010 demographic survey conducted by the Saudi General Authority for Statistics – is experiencing urban sprawl, which can be defined as an unplanned urban expansion that might degrade the environment and diminish the aesthetic view. This is a persisting problem in Makkah driven by multitude of processes involving the random expansion in its undeveloped land and the removal of its historic mountains surrounding Al-Masjid Al-Haram (the Holy Mosque) in an attempt to push the city limit of urban capacity within its administrative …

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 …

Interpreting Potential Groundwater Policies Through Modeling Of Market And Non-Market Benefits And Costs, Grant H. West

Graduate Theses and Dissertations

Current policies leveraging financial incentives and improved irrigation efficiency to mitigate groundwater scarcity have not proven to curtail trends of resource depletion. Groundwater benefits cannot be appropriately valued solely on market forces, and so deeper policy consideration is warranted under a framework that considers the importance of groundwater across all its values to society. Understanding time preferences for groundwater management and preferences for alternative policies is vital to inform efficient policies. Furthermore, climate change remains politically controversial yet has important consequences for critical groundwater resources and their sustainable long-term management. Proliferating policy narratives concerning climate change could influence the way …

The River Gave And The River Hath Taken Away: How The Arkansas River Shaped The Course Of Arkansas History, Edward N. Andrus

Graduate Theses and Dissertations

The Arkansas River molded the history of Arkansas. It also shaped human to human interactions and human relationships with the physical environment. Since humans first encountered the river their lives have been influenced by it. The river played a significant role in creating the environmental conditions that contributed to a specific existence within the river valley. It affected what types of flora and fauna existed, the quality of the soil, and the climate. The river was a vital component in the evolution of the cultures and societies that developed in the river valley. Conversely, humans affected the river. The ways …

The State Of State History: Teacher Perceptions Regarding The Place And Purpose Of State History In K–12 Social Studies, Shay Hopper

Graduate Theses and Dissertations

Social studies, history, and state history courses, in general, have long been broadly considered the least significant of the four core content courses in K – 12 education. State history is required and/or taught inconsistently throughout the 50 states, and in some cases, not at all. Teacher preparation and on-going support to teach state history in K – 12 education are also inconsistent and often disregarded. The purpose of this exploratory qualitative survey and interview study was to investigate teacher perceptions regarding place and purpose of state history in K – 12 social studies, and to identify teacher dispositions toward …

Genetic Relationships Using Mitochondrial Versus Nuclear Markers: Is The Catfish Rag1 Gene Suitable For Species Differentiation In The Family Pangasiidae?, Huong Thanh Hoang

Graduate Theses and Dissertations

The Mekong River located in Southeast Asia is a global “hotspot” for aquatic biodiversity. It includes an extensive variety of fish species second only to the Amazon River in South America. Recent studies have revealed the impacts of anthropogenic and climate factors on this river system. Such impacts can result in the formation of barriers, which divide a species population and impede gene flow between separated sub-populations. Barriers influence evolutionary trajectories resulting in the generation of geographic variants or subspecies from an ancestral population. Catfish (Teleostei: Siluriformes) are a key species of the Mekong River ecosystem and are an essential …

Special Relationships: Anglo-American Latin America Policy And The Redefining Of National Security, 1969-1982, Benjamin Jared Pack

Graduate Theses and Dissertations

From 1969–82, the United States and Great Britain redefined national security in a distinctive way, separating the notion of national security from its traditional foundations in realist thought. The way the two powers come to define national security was the result of more than a century of historical interaction with Latin America and their own historical experience with ideology, imperialism, and colonialism. As such, the way the United States and Great Britain perceived their respective special relationships influenced the way they chose to intervene in matters of national security, particularly in Latin America’s Southern Cone countries of Chile and Argentina. …

American And Iraqi Prose Fiction Of The Iraq War: Traumas Of The Self, Traumas Of The Nation, Ghyath Manhel Alkinani

Graduate Theses and Dissertations

War is so omnipresent in our contemporary world that the story of war is too important to be left to fiction writers to frame and give meaning for. This dissertation provides an analysis of two dominant patterns in contemporary Iraqi and American prose fictional representations of the Iraq War: the individualistic trauma hero narrative and the nationalistic, collective narrative. I argue that the trauma hero myth that dominates American representations of the Iraq War psychologizes and de-politicizes war experience alienating the victim of trauma by decontextualizing their experience and negating the Other. On the other hand, the sweeping nationalistic narrative …

The Archaeology Of Mississippian Vulnerability And Resilience In The New Madrid Seismic Zone, Michelle Megan Rathgaber

Graduate Theses and Dissertations

This work examines the vulnerability and resilience of Mississippian people in the Central Mississippi Valley to the large-scale New Madrid seismic zone earthquakes of the late15th to early 16th century. This is done using the theory of eventful archaeology/anthropology to look at cultural materials both before and after an event (such as an earthquake and sand blows) to look for evidence of changes to the schema and resources on which a society relies. If changes are present, the event can be labeled as such, if there are no changes, it means that the society affected did not see the event …

Kabbala, Christians, And Jews: An Examination Of The Rise And Fall Of Peculiar Relationships That Developed Between Christian Elites And Jewish Scholars In Renaissance Italy, Glenda Leona Dannenfelser

Graduate Theses and Dissertations

The Italian Renaissance was to many of its contemporaries a golden age. It was unarguably a phenomenal time in European history. The sharing of intellectual ideas and innovations during this period permanently changed the world. Knowledge was spread across Europe at an unprecedented pace and intellectual minds were greatly expanded from both new and old discoveries. During this period, classical works were fortuitously unearthed and swiftly consumed for their hoary wisdom and guidance. Among these works were found ancient productions related to various occult ideas and practices such as alchemy and magic. A subset of the prominent group of Italian …