Digital Commons Network^™

Exploring Heuristics And Best Practices For Redesigning Instructional Video, Kelly L. Murdock

Theses and Dissertations

Instructional video is a common staple for delivering content in online courses. However, if the included videos are not properly created, many students will skip the video and its content. Improving instructional video has been the topic of many research projects, and we can learn from these studies how to create effective and engaging instructional videos--this is the topic of my dissertation. The first paper is an extended literature review that examines which key instructional design principles are supported in the literature. This helps developers to know which principles to focus on when designing video. The second paper is a …

Forecasting Ride-Hailing Across Multiple Model Frameworks, Christopher Stephen Day

Theses and Dissertations

The advent of on-demand transport modes such as ride-hailing and microtransit has challenged forecasters to develop new methods of forecasting the use and impacts of such modes. In particular, there is some professional disagreement about the relative role of activity-based transportation behavior models -- which have detailed understanding of the person making a trip and its purpose -- and multi-agent demand simulations which may have a better understanding of the availability and service characteristics of on-demand services. A particular question surrounds how the relative strengths of these two approaches might be successfully paired in practice. Using daily plans generated by …

Evolutionary Cartographies Of Language Diversification: Quantitative Approaches To The Geolinguistic Mapping Of The Kayanic Languages (Central Borneo), Deandré A. Espree-Conaway

Theses and Dissertations

Why are there so many languages in the world and how did this diversity come about? Every day, humans around the world speak over 7,000 languages. One of the most impactful theories describing the processes and mechanisms of language diversification is that of the Linguistic Niche Hypothesis (Lupyan & Dale 2010). The Linguistic Niche Hypothesis suggests that languages adapt to their environments (Lupyan & Dale 2010: 1). Lupyan and Dale describe it, stating that "just as biological organisms are shaped by ecological niches, languages structures...adapt to the environment (niche) in which they are being learned and used" (2010: 1). Taking …

Whole Fruit Consumption, 100% Fruit Juice Consumption, And Cardiovascular Disease (Cvd) In U.S. Adults: Analysis Of 2019 Brfss, Brendan James Kesler

Theses and Dissertations

The consumption of whole fruit is well established to promote health and prevent disease. The Dietary Guidelines for Americans includes both whole fruit and 100% fruit juice in its intake recommendations. Compositional differences between whole fruit and 100% fruit juice may exist especially with regard to health-promoting dietary fiber. Based on potential compositional differences, a primary hypothesis was created: whole fruit consumption frequency will be lower in adults with less favorable cardiovascular measures. Additionally, a secondary hypothesis was created: 100% fruit juice consumption frequency will be higher in adults with less favorable cardiovascular measures. To explore the hypothesis, a cross-sectional, …

Employment Transitions From Active-Duty Army Officer To Civilian: An Exploration Of The Knowledge, Skills, And Abilities Possessed By Combat-Experienced, Army Field-Grade Officers, James Daniel Crook

Theses and Dissertations

Two decades of wars in Iraq and Afghanistan have concluded, bringing an end to the longest military conflicts in the history of the United States of America. Following the example of post-war history, the military’s posture is to reduce personnel end-strength. The post-war military requires fewer soldiers, and a significant number of transitioning officers make the journey from military to civilian employment. This quantitative study discovered the knowledge, skills, and abilities of combat-experienced, active-duty, Army field-grade officers and explored the change from military to civilian employment. This study addressed the gap in the literature regarding this specific group of transitioning …

Conjunctive Management For Groundwater-Surface Water Resources: Numerical Modeling And Potential Assessment Of Managed Aquifer Recharge (Mar) At Lower Rio Grande Valley In South Texas, Dwight Zedric Q. Capus

Theses and Dissertations

Texas is well known to frequent floods and droughts, and yet has mounting concerns in very imbalanced water availability and water demands from growth in population and economical activities. Capturing and storing water is essential to long-term and climate-smart management of the “already-scarce” water resources. This study aimed to apply numerical modeling to evaluate potentials and impacts of Managed Aquifer Recharge (MAR) to regional groundwater systems in the Lower Rio Grande Valley. Using Visual MODFLOW Flex 3D package, different scenarios were simulated for groundwater flow patterns and storage capacities. Water injections tested ranged between 7.30x105 ft3 to 3.65x109 ft3 , …

Winds & Waves: A Collection Of Short Stories & Poems [Vientos Y Olas: Una Colección De Cuentos Y Poemas], Joann Balderrama

Theses and Dissertations

Winds & Waves: A Collection of Short Stories & Poems, presents works of fiction telling a cohesive story with themes of survival, joy in simplicity, and resilience. My work will show the gradual exposing of moods as well as experimentation with writing techniques in several genres. My writing has developed to include a voice of introspection.

My thesis title includes winds and waves to signify change and transformation. They also refer to the movement in nature. Nature is included in a lot of my pieces. Water is an important symbolic component in several of the pieces as well.

Being …

An Assessment Of Physical And Microbial Dynamic Properties Sensitive To Tillage Practices In Hidalgo Sandy Clay Loam Soils, Rocio N. Hernandez

Theses and Dissertations

Mechanized tillage is known to impact the dynamic physical, biological and chemical properties of a given soil, and as a result, can cause systematic harm to the soil’s function (Alam et al., 2014). The aim of this study is to assess how a series of land management tillage practices will impact dynamic physical and biological soil health parameters such as aggregation, carbon, respiration, and enzymatic activity (β-glucosidase). According to Acir et al (2020), the aforementioned soil parameters are both co-influenced and dependent, indicating a response to tillage is likely. A total of 198 samples of Hidalgo series soils were collected …

A Cross-Sectional Exploratory Study On Voluntary Reporting Of Professional Groups In U.S. Commercial Aviation, James Norman

Theses and Dissertations

Aviation safety culture research does not exist regarding the specific factors that either promote or discourage voluntary safety reporting among different frontline groups in U.S. Part 121 operations. Moreover, while safety culture has been shown to vary across workgroups, cross-sectional research across multiple aviation organizations regarding voluntary reporting is lacking. To address this gap in the literature, an exploratory study was conducted utilizing a sequential, confirmatory mixed methods approach. A 28-item survey was distributed to air traffic controllers, dispatchers, maintenance technicians, and pilots. The instrument quantitatively assessed organizational safety values, reporting friction, previous reporting experience, just culture, and voluntary reporting …

Cooperative Wide Area Search Algorithm Analysis Using Sub-Region Techniques, Shawn Whitney

Theses and Dissertations

Recent advances in small Unmmaned Aerial Vehicle (UAV) technology reinvigorates the need for additional research into Wide Area Search (WAS) algorithms for civilian and military applications. But due to the extremely large variability in UAV environments and design, Digital Engineering (DE) is utilized to reduce the time, cost, and energy required to advance this technology. DE also allows rapid design and evaluation of autonomous systems which utilize and support WAS algorithms. Modern WAS algorithms can be broadly classified into decision-based algorithms, statistical algorithms, and Artificial Intelligence (AI)/Machine Learning (ML) algorithms. This research continues on the work by Hatzinger and Gertsman …

The Ring Quarry Mining Complex: A Preliminary Archaeological Investigation Into Ancient Native American Sites In Northwestern New Jersey, Joseph D. Cusack

Theses and Dissertations

The Ring Quarry Mining Complex (RQMC) in northwestern New Jersey is an archaeological, Pre-Contact Native American mining and habitation complex. The RQMC was a primary source of tool stone in the Vernon Valley of New Jersey for thousands of years. Evidence of human occupation within the study area extends from the Paleoindian through the Contact Period. This study focuses on the ancient chert quarry and surrounding sites across a landscape making up a habitational complex.

Conflict And Nature: How War In Cambodia Shaped Its Natural Landscape, Emily Lifs

Theses and Dissertations

Through the efforts of the Cambodian people and historians, the world is familiar with the tragic human story that unfolded over decades of war and the brutal rule of the Khmer Rouge. This thesis is an attempt to tell the equally tragic but untold story of how decades of conflict shaped the Cambodian landscape and the lives and populations of elephants and other animals.

Trends In Nutrients Load And Driving Factors In Illinois River Basins, Olaoluwa David Oladuji

Theses and Dissertations

The demand for clean and potable water increases as the population number grows, and surface water serves as a significant source of water supply to many municipalities. However, the quality of surface waters is altered due to excess load of nutrients in the water bodies. For example, excess nitrate and dissolved phosphorus in water may lead to eutrophication. The 2019 bi-annual Illinois Nutrient Loss Reduction Strategies reported about 13% and 35% increases in nitrate and total phosphorus, respectively, across the statewide basins compared to the previous baseline data of 1980-1996. The biannual report stated that Illinois River basin was a …

Spatial And Age Disparities In Covid-19 Outcomes, Qian Huang

Theses and Dissertations

COVID-19 has caused significant social, economic, environmental, and political impacts globally and affected communities unequally in the U.S. The pandemic has also sparked interest in age-specific manifestations of infection, for example, studies confirmed the risk of increasing age with COVID-19 severity. However, the nonstationarity effects of health determinants among age groups have not been well examined. This study aims to explore the nonstationarity effects of social, behavioral, environmental, health care access, and political contexts on COVID-19 outcomes. This study poses three broad questions: 1) how did COVID-19 vaccinations align with COVID-19 daily cases and deaths in the United States; 2) …

Association Of Prior Periodontal Disease With Cancer – Exploring Epidemiologic Evidence Of Periodontal Exudate-Exposed Site Cancer Risk Versus Remote Gastrointestinal Sites, Asma Alzahrani

Theses and Dissertations

Background: Periodontal disease, a chronic bacterial infection of the gums, if untreated, causes chronic inflammation over years and eventual tooth loss. The associations between periodontal disease (measured by missing teeth) and certain sites of cancer have been established, in epidemiological studies, and attributed to systemic inflammatory impacts causing carcinogenic change over decades. Because periodontal exudates are toxic, containing locally bioactive bacteria and toxins, this study hypothesized and studied the potential higher cancer risk of anatomic sites exposed to oral exudates (exudate-exposed site cancers (EEC); head and neck, oral, pharynx, larynx, esophagus, stomach). The study studied the risk of exudate exposed …

Gis Analysis Of Housing Delinquency After Repeated Flooding In Horry County, South Carolina, Andrew White

Theses and Dissertations

How communities react and change after disaster has been well-studied in recent decades. Knowledge around time scales, spatial scales, and specific facets of the built environment, such as housing recovery, have all developed largely around the opportunities that disasters have provided in understanding societal functions. This research has given policy makers and institutions insights into shortcomings of disaster specific recoveries, but these shortcomings are generalized beyond the scope of the originally studied areas. This thesis adapts this body of knowledge to a GIS methodology to help localize understanding to the coastal South Carolina context of Horry County. This low-lying area …

Human Activity Recognition (Har) Using Wearable Sensors And Machine Learning, Chrisogonas Odero Odhiambo

Theses and Dissertations

Humans engage in a wide range of simple and complex activities. Human Activity Recognition (HAR) is typically a classification problem in computer vision and pattern recognition, to recognize various human activities. Recent technological advancements, the miniaturization of electronic devices, and the deployment of cheaper and faster data networks have propelled environments augmented with contextual and real-time information, such as smart homes and smart cities. These context-aware environments, alongside smart wearable sensors, have opened the door to numerous opportunities for adding value and personalized services to citizens. Vision-based and sensory-based HAR find diverse applications in healthcare, surveillance, sports, event analysis, Human-Computer …

Belonging In Context: An Exploration Of Sense Of Belonging Among College Students, Ladonna L. Gleason

Theses and Dissertations

Feeling a sense of belonging is essential to human health and functioning and has been well documented in the literature. However, questions of context remain. Research in belonging has focused on social aspects of belonging, leaving broader contextual frames unexplored. There has been little work in identifying and differentiating the contexts in which belonging is experienced or in developing an understanding of how the experience of belonging differs across contexts. Current belonging theory lacks this important contextual perspective that could inform the ways in which belonging is constructed and reconstructed through disruption. With the advent of the COVID-19 pandemic, new …

Investigating The First/Last Mile Problem In Underserved Communities: A Case Study In Camden City, Nj, Ruqaya Alfaris

Theses and Dissertations

The first/last mile (FLM) is defined as the distance a transiting person should complete before boarding or after alighting at a transit station. The FLM trip is one of the major barriers to access transit, which significantly affects individuals' accessibility to critical services. Specifically, this is prevalent in underserved communities in which public transportation constitutes the major mode of travel. As a case study, the current study discusses the FLM barriers in Camden City, NJ. The study comprehensively reviews the existing literature of the FLM practice to identify the lessons learned from previously conducted plans and programs. To supplement the …

Improving Country Conflict And Peace Modeling: Datasets, Imputations, And Hierarchical Clustering, Benjamin D. Leiby

Theses and Dissertations

Many disparate datasets exist that provide country attributes covering political, economic, and social aspects. Unfortunately, this data often does not include all countries nor is the data complete for those countries included, as measured by the dataset’s missingness. This research addresses these dataset shortfalls in predicting country instability by considering country attributes in all aspects as well as in greater thresholds of missingness. First, a structured summary of past research is presented framed by a developed casual taxonomy and functional ontology. Additionally, a novel imputation technique for very large datasets is presented to account for moderate missingness in the expanded …

Air Quality Impacts From Mineral Dust, Fireworks, And Urban Pollution Revealed By Trace Element Chemistry And Strontium Isotopes Ratios In The Wasatch Front, Utah, Usa, Micah J. Marcy

Theses and Dissertations

Airborne particulate matter (PM) in urban areas is derived from a combination of natural and anthropogenic sources. To identify PM sources and their effects on air quality, we collected PM using active filter samplers over a two-year period in the urban Wasatch Front, northern Utah, an area affected by multiple pollution sources. Filters from active samplers and other PM samples were analyzed for major and trace element concentrations and 87Sr/86Sr ratios. We identified wind-blown mineral dust from dry lake beds, winter inversions, and fireworks as primary PM sources affecting air quality in the Wasatch Front. Dust contributes Al, Be, Ca, …

‘Thus Says The Lady:’ Gender, Politics, And The Army Of Mary (1971-2007), Brittany N. Fugate

Theses and Dissertations

This thesis discusses a group that was excommunicated from the Catholic church known as the Army of Mary. The group was founded in 1971 by a Quebec woman named Marie-Paule Giguère. The group formally excommunicated in 2007, which included a group of nuns from Hot Springs, Arkansas known as Our Lady of Charity and Refuge. This thesis will discuss the history of the group, what led to the excommunication of them, and examining how gender and politics both play a role in how the group was handled.

An Exploration Of Factors That Impact Uptake Of Human Papillomavirus Vaccines, David Samuel Redd

Theses and Dissertations

Introduction The discovery and continued development of vaccines is arguably one of the most important innovations in human history. Vaccination greatly reduces the worldwide incidence and transmission of diseases, preventing permanent injury and premature death. Mass vaccination campaigns have led to the eradication or partial eradication of severe infectious such as smallpox and polio, have reduced childhood mortality, and has led to an overall increase in average health in the human population globally. Despite the documented benefits of vaccination, vaccine hesitancy is increasing, and the uptake of some vaccines is low. Vaccines have been so successful at preventing disease that …

Travel Behavior And Subjective Well-Being: Effects Of Travel, Activity, And Personal Factors, Jacquelyn O. Erinne

Theses and Dissertations

The overarching goal of this dissertation is to examine the complex trip-, activity-, and personal-level factors impacting individuals’ well-being. This is achieved through fulfilling three research objectives. The first objective examines the fluctuation of happiness induced by the influences of daily trip and activity factors. The second objective examines the sensitivity of affective well-being to trip and activity duration. The third objective evaluates the gender differences in trip- and activity-induced well-being. Three notable findings are discerned using trip and activity episodes as well as self-reported well-being of 357 participants collected by the Daynamica smartphone application in Minneapolis-St. Paul metropolitan area …

(Re)Constructing Homescapes: “Archaeological Remote Sensing” And Ground-Truthing Of The Walker Place Homestead At Spirit Hill Farm, Tate County, Mississippi, Gabriel Griffin

Theses and Dissertations

This thesis focuses on an early nineteenth-century homestead known as the Walker Place homestead at Spirit Hill Farm in northern Mississippi. The goal of this thesis is to conduct a ground-penetrating radar (GPR) and shovel test survey to explore how changing landscapes simultaneously (re)create and destroy senses of place or Homescapes. Homescapes have received little attention in the field of archaeology and have not been applied to Euro-American Homescapes. I apply this theoretical construct in a novel way as a venture to further develop an avenue in archaeology to be collaborative and understand the past in a way that accurately …

The Level Of Burnout And Job Satisfaction Among Mississippi Agriculture Educators And The Potential Level Of Impact From The Covid-19 Pandemic, Anna Hollis

Theses and Dissertations

Many states across the country have felt the impact of a nationwide teacher shortage. Specifically, the state of Mississippi has experienced a shortage of certified agricultural education teachers. Unfortunately, during a time, a novel virus (Coronavirus or COVID-19) swept the entire world and shook the academic world to its core. Like the majority, educators were encouraged to adopt a variety of approaches to better flow with the changes in their “normal” routines. Many researchers have suggested that teachers are leaving education due to little resources, recognition, and high job demands, which correlates to poor job satisfaction and symptoms of burnout. …

Using Stimulus Equivalence To Improve Portion Size Estimates In Emerging Adults With Developmental Disabilities, Laura M. Quintero

Theses and Dissertations

The purpose of this current study was to evaluate the use of a stimulus equivalence paradigm to teach emerging adults with developmental disabilities to accurately estimate portion sizes. This study also aimed to integrate nutritionally recommended foods to incorporate a socially significant component to promote health related behaviors. Three emerging adults with various developmental disabilities participated in this study. A pre/post-test embedded in a multiple baseline design across food was used to demonstrate experimental control. Results of this study indicated that all participants exhibited accurate portion size estimations following stimulus equivalence direct training trials and test of untrained relations. When …

U.S. Financial Literacy: Does Urban-Rural Residency Matter?, Mckenzie Leanne Carvalho

Theses and Dissertations

Financial illiteracy broadly affects people’s financial and economic well-being. The purpose of this thesis is to identify how the magnitudes of financial literacy determinants change under different residency settings. A county-level calculation of financial literacy is created, and logit and negative binomial regressions are employed to compare the relationship between demographic variables and financial literacy in metro/non-metro and urban/rural counties. Data on individual’s financial knowledge and personal characteristics is obtained from the FINRA National Financial Capability Study. Urban and rural residency is determined using USDA ERS Rural-Urban Continuum Codes and the Index of Relative Rurality. These results provide an improved …

Towards A Model Of Support: Redefining The Focus Of Early Parenting, Keancelar E. Birge

Theses and Dissertations

This qualitative study examines the meanings and perceptions of social support and analyzes support received during and after pregnancy among Black women early parents in Mississippi. Ten online and ten in person, in-depth interviews were conducted with Black early parents in Mississippi who either had support from outside organizations like Baby University or who had not. These interviews questioned the participants' understanding and ideas about support and how they perceived their own support to evaluate how having support impacts the livelihood of Black early mothers in Mississippi and their children. Findings demonstrated that there are not real differences in outcomes …

Utilization Of A Boosted Regression Tree Framework For Prediction Of Dissolved Phosphorus Concentrations Throughout The High Plains Aquifer Region, Jeffrey M. Temple

Theses and Dissertations

Groundwater-derived phosphorus has often been dismissed as a significant contributor towards surface water eutrophication, however, this dismissal is unwarranted, making the quantification of phosphorus concentrations in groundwater systems immensely important. Machine learning models have been employed to quantify the concentrations of various contaminants in groundwater, but to our best knowledge have never been used for the quantification of groundwater phosphorus. The goal of this research was to use a boosted regression tree framework to produce the first believed machine learning model of phosphorus variability in groundwater, with the High Plains aquifer serving as the study area. Results display a boosted …