Digital Commons Network^™

Digging For Information: Investigating The Efficacy Of Tracking And Augmenting Lacunicambarus Nebrascensis For Endangered Dragonfly Conservation, Danielle Elaine Tesar

Dissertations and Theses

Restoration and preservation of habitat for threatened and endangered species can proceed in many ways. Augmentation strategies can be used to supplement threatened and endangered populations or the species and resources on which those imperiled species depend. Comprehensive knowledge of species movement and home range is necessary to formulate effective augmentation plans. For freshwater burrowing crayfish, this type of information is generally lacking. The studies reported here were designed to acquire detailed information that is essential for augmentation of the plains devil crayfish, Lacunicambarus nebrascensis (formerly, Cambarus diogenes). Although L. nebrascensis populations are not considered threatened, this crayfish provides vital …

Anhedonia And Impulsivity In College Alcohol Use: A Path Analysis, Sydney N. Stamatovich

Dissertations and Theses

This study tested a path model to explore whether different types of anhedonia are associated with alcohol use and problems via different types of impulsivity in 640 college students (ages 18-25). This study parsed anhedonia into four specific facets: consummatory and anticipatory anhedonia, and “recreational” and social anhedonia. Consummatory anhedonia (i.e., the “liking” of a reward) was hypothesized to be associated with alcohol use and problems via sensation seeking, a component of impulsivity where individuals tend to seek out rewarding, yet sometimes risky stimuli. Further, anticipatory anhedonia (i.e., the process of “looking forward to” or “wanting” a reward) was hypothesized …

The Bad Place And The Not Place, Andrew Maudal

Dissertations and Theses

Do we, as an audience, gravitate toward apocalyptic settings to connect with outlying characters that defy the odds to survive the impossible? Or is it instead to fantasize about what we would do without societal norms, without rules, and without anything to hold us back. In my writing, I endeavor to walk the line of absolute bleakness and hopeful change while focusing on the compassion forged through friendship. Literary critics have long argued that society oppresses the lower class through laws, social upbringing, and cultural institutes. In youth a struggle forms within us between how we want our true selves …

Federated Learning For Lung Sound Analysis, Afia Farjana

Dissertations and Theses

Despite the general success of employing artificial intelligence (AI) to help radiologists perform computer-aided patient diagnosis, building machine learning models with limited datasets at different sites is not trivial. In addition, medical imaging is no exception. In medical imaging informatics, precise detection of lung disease helps clinicians treat patients effectively while averting possible fatalities. To effectively build machine learning models, we propose to study federated learning mechanisms, so we can use/learn datasets from different sources/regions/sites. . Individual sites may jointly train a global model using this approach, referred to as federated learning. In other words, without explicitly sharing datasets, federated …

Perfectionism And Academic Burnout In Honors, High-Achieving Non-Honors, And Typical Undergraduate Students, Hannah Belle Faiman

Dissertations and Theses

Perfectionism and academic burnout are two multidimensional constructs that have been found to be associated with factors such as academic achievement and personal well-being, and several researchers have posited that these constructs may be more prevalent in particular student populations, such as high-achieving students. There is little research, however, that distinguishes between unique groups of high-achieving college students. To address this gap and further explore group differences in factors affecting student success in higher education, the Almost Perfect Scale – Revised (APS-R) and the student version of the Oldenburg Burnout Inventory (OLBI-S) were used to measure perfectionism and academic burnout …

Representations Of Native Americans In Contemporary Media: Dances With Wolves, Diane Sawyer, And Reservation Dogs, Jacqueline Hendry

Dissertations and Theses

Thirty years after Dances with Wolves won the Academy Award for Best Picture, and ten years after the 20/20 special “Hidden America: Children of the Plains” recycled ‘90’s Hollywood tropes to report on poverty on the Pine Ridge Reservation, the 2021 comedy series Reservation Dogs marks a watershed moment in Native representation. Led by an Indigenous cast and Indigenous creative team, it features contemporary aspects of Native life through a particular niche humor that doesn’t explain itself to audiences not in the know. The as-yet unique series has been well-received by Native and non-Native audiences, but in order to appreciate …

Automated Chest X-Ray Analysis: Biomedical/Non-Biomedical Foreign Object Detection, Shotabdi Roy

Dissertations and Theses

The presence of non-biomedical foreign objects (NBFO) such as coins, buttons, jewelry, etc. and biomedical foreign objects (BFO) such as medical tubes, and devices in Chest X-Rays (CXRs) make accurate interpretation difficult as they do not indicate known biological abnormalities like excess fluids, Tuberculosis (TB) or cysts. Accurate diagnosis and screening, require these NBFO and BFO to be detected, categorized as either NBFO or BFO, and removed from CXR or highlighted in CXR for effective abnormality analysis. During an automated CXR screening process, NBFOs can adversely impact the process as typical machine learning algorithms would consider these objects to be …

Childhood Interpersonal Trauma And Disordered Eating; The Mediating Role Of Social Information Processing Deficits, Deviated Pubertal Timing, And Emotion, Cazzie Es Steinzor

Dissertations and Theses

Childhood maltreatment has been identified as a risk factor for psychopathology, including disordered eating. The current study tested a transdiagnostic theoretical model, posited by McLaughlin and colleagues (2020), that integrates difficulties with emotions, perceived deviation in pubertal timing, and social information processing deficits to explain the relationship between childhood maltreatment exposure and the development of a range of psychopathology. Specifically, the current study incorporated the aforementioned mechanisms to explain the relationship of child maltreatment with disordered eating. While research supports associations between the aforementioned variables, it is unclear if these three mechanisms better explain the relationship between exposure to childhood …

Electron Deficient Fluoroarenes: Bridging Deoxyfluorination And Anion-Π Interactions To Produce New Fluorination Reagents, Jordan Houston Kramer

Dissertations and Theses

Fluorination is a ubiquitous in modern materials and pharmaceuticals due to organofluorine compounds possessing unique physicochemical properties. However, this process is a demanding task due to difficulty in handling key reagents for selective fluorination. One strategy is the usage of deoxyfluorination reagents due to the wide availability of oxygen in many functional moieties. These reagents have allowed to production of new fluorinated materials and pharmaceuticals, yet the costs of several reagents and instabilities for others lead to restricted conditions, functional group tolerance, and safety risks for both users and the environment. Reported here is the culmination of a new hypothesis …

Emergency Preparedness And Response Protocol In South Dakota Public Schools, George A. Seiler

Dissertations and Theses

Providing a safe and secure learning environment is one of the most important components of being a superintendent. This quantitative study examined school superintendent perceptions of safety and the importance of four emergency crisis components, prevention, preparedness, response, and recovery in the state of South Dakota. The study was included 147 school public school districts in South Dakota and two school districts were excluded because they were only K-8 school districts. The study also investigated the relationship of school size and its affect on school safety based on superintendent perceptions of the four components of emergency crisis plans. The results …

Initial Implementation Of Culturally Responsive Social-Emotional Systems Of Support For Anishinaabe Kindergarteners: Student Outcomes And Teacher Perceptions, Dustin Everett Hinckley

Dissertations and Theses

This study examined the academic and social-emotional outcomes and teacher perceptions of the initial implementation of a culturally responsive social-emotional learning Multi-Tiered System of Support (MTSS) within a culturally homogenous rural Kindergarten Center. For this study, academic and behavioral student outcomes and teacher perceptions of both the implementation process and the outcomes of the implementation were explored. A quantitative ex post facto study based on students’ academic achievement scores and behavioral data, along with survey research to determine teacher perceptions, compared a cohort of students who participated in the culturally responsive social-emotional learning MTSS with a cohort that didn’t. Overall, …

Novice Teacher Recruitment And Retention In South Dakota: An Exploration Of Contextual Factors, Nicole Schutter

Dissertations and Theses

Teacher recruitment and retention consistently emerge as problematic in research and practice. This is particularly true in difficult to staff areas, such as rural school districts in the United States. As the teacher pipeline continues to decrease and various challenges continue to plague the field, this problem will quickly turn into a crisis. The present study aimed to lift voices of novice teachers in rural and remote rural areas of South Dakota to better understand individuals’ experiences in a rural setting and contribute to the current knowledge base of rural teacher recruitment and retention. This qualitative phenomenological study interviewed 11 …

Contraceptive Use And Sterilization Among People With Disabilities, Gabrielle Y. Defiebre

Dissertations and Theses

Background

Approximately 20% of individuals in the United States (US) have a disability, with 1 in 4 adult women above the age of 18 having a disability. People with disabilities include individuals who may experience difficulties with mobility, cognition, independent living, vision, hearing, and/or self-care. Disabled people face physical/environmental barriers, provider-level barriers, and system-level barriers in accessing health care, including sexual and reproductive health care, and are more likely than people without disabilities to have unmet medical needs. Four recent studies have indicated that those with disabilities are more likely to have received female sterilization as a family planning service …

Association Between Childhood Obesity, Family Meals, And Dietary Quality Among Us Children Aged 6 To 17 Years Residing In Snap-Eligible Households, Noemi Rodriguez

Dissertations and Theses

Background:

Between 20 and 21% of US children 6-19 have obesity. Children residing in households eligible for the Supplemental Nutrition Assistance Program (SNAP) are exposed to vulnerable socioeconomic conditions, often living in low-resourced households and communities. These children are at a high risk for obesity, and thus to obesity-related comorbidities as well as adulthood obesity. The US Department of Agriculture (USDA) recommends family meals as well as diets meeting the American Dietary Guidelines as an obesity prevention strategy. These are connected; the dominantly theorized pathway by which family meals protect against childhood obesity is through the diet quality of the …

Characterization Of Undoped Csi At Cryogenic Temperatures, Yongjin Yang

Dissertations and Theses

Doped CSI (Cesium iodide) is wildly used in many detectors. Pure cesium iodide can only perform well at low temperature due to its luminous properties. Its luminous efficiency at low temperature is even better than that of impurity-containing cesium iodide. So we want to measure its properties at low temperatures. In chapter 3, we measure the light yield of the pure CSI, which is the important property as a detector. We also introduce our experimental equipment and methods. In chapter 4, the quenching factor represents the efficiency of energy deposition. This value is a key point for our future detection …

Framework For The Evaluation Of Perturbations In The Systems Biology Landscape And Inter-Sample Similarity From Transcriptomic Datasets — A Digital Twin Perspective, Mariah Marie Hoffman

Dissertations and Theses

One approach to interrogating the complexities of human systems in their well-regulated and dysregulated states is through the use of digital twins. Digital twins are virtual representations of physical systems that are descriptive of an individual's state of health, an object fundamentally related to precision medicine. A key element for building a functional digital twin type for a disease or predicting the therapeutic efficacy of a potential treatment is harmonized, machine-parsable domain knowledge. Hypothesis-driven investigations are the gold standard for representing subsystems, but their results encompass a limited knowledge of the full biosystem. Multi-omics data is one rich source of …

A Study Of Greenhouse Gas Emissions And Performance Of An Internal Combustion Engine Operating On Landfill Gas Blends As Fuel, Lauren T. Creadore

Dissertations and Theses

Landfill gas (LFG) is an abundant resource naturally occurring from the decomposition of municipal solid waste. It can be generated in U.S. landfills at a rate of 24.2 to 59.1 GNm³ per year.¹ LFG presents both a problem and solution with respect to global warming. Composed of carbon dioxide (CO₂, 30-40%) and methane (CH₄, 45-55%), as well as nitrogen (N₂, 10-15%), oxygen (O₂, 0-5%), and other trace gasses¹, LFG that is permitted release into the atmosphere will contribute to the greenhouse gas effect due to the presence of …

Computational Study Of Quorum Quenching Of N-Acyl Homoserine Lactones By Ion Pairing To Cations, Ashen Anuradha Suduweli Kondage

Dissertations and Theses

Biofilms are the default state of microbial life and their formation on surfaces influences many processes. The coordinated behavior of microorganisms including their growth into biofilms occurs through a process termed quorum sensing during which they excrete specific signaling molecules called autoinducers. Recently it has been observed that Ag+ and Cu2+ ions interact with N-hexanoyl-L-homoserine autoinducers thereby inhibiting quorum sensing. Such inhibitors are called quorum quenchers. In this study, we have used density functional theory (DFT) calculations to study the ion pairing between select cations and short chained N-acyl-homoserine lactone (AHL) type autoinducers that are used by gram negative bacteria. …

The Perception Of Partner’S Pornography Use As A Betrayal: The Role Of Trust, Investment, Commitment, And Forgiveness, Vi Nguyen

Dissertations and Theses

The purpose of this study was to examine the roles of relationship factors (e.g., trust, investment, and commitment) and forgiveness in the perception of partner pornography use as a betrayal. It was hypothesized that relationship factors and forgiveness would be significantly related to pornography distress, betrayal intensity, and depression. Participants were recruited from three sources: students from an urban university in the Northeast through an online platform called SONA (N = 13), social media sites (i.e., Facebook and Reddit, N = 1105), and through the snowballing technique (N = 49). The final sample size after the data cleaning procedure was …

Satirical Dissent: The Subversive Messaging Of Ad Reinhardt’S 1946 And 1961 Art Comics How To Look At Modern Art In America, Julie A. Schumacher

Dissertations and Theses

Through a close analysis of Ad Reinhard's 1946 and 1961 art comics "How to Look at Modern Art in America,” examined in the context of their times, this paper will argue that Reinhardt’s idealist view and involvement with abstraction, as he saw it in its “purest” form, was intrinsically formed and shaped by his Marxist anticapitalistic perspectives in response to his concurrent time. When these works are examined through the lens of Reinhard’s socialist politics, a parallel narrative surfaces where “pictures artists” also signifies capitalism and its capacity to harmonize and contaminate.

Cherokee Abstract Artist Leon Polk Smith: A Convergence Of Traditions, Danielle Montanino

Dissertations and Theses

This paper analyzes how Leon Polk Smith's Indigenous roots and upbringing in Indian Country had a significant impact on his artistic practice in a time of discrimination and segregation in the United States. Through examination contextualizing his work within the history and political events of the Cherokee, Chickasaw, and Choctaw Nations it is revealed how Polk Smith developed a formal language that could navigate both worlds and be viewed through a pure abstraction lens or a lens embodying his Indigenous traditions. In addition to his Indigenous philosophies, Mesoamerican Inca Nation’s cultural motifs further ground Polk Smith’s Indigenous aesthetic, and avant-garde …

Flawed Judgment: The Prolonged Failure Of Handschu V. Special Services Division, 1971-2022, Henry A. Burby

Dissertations and Theses

This thesis explores Handschu v. Special Services Division, an ongoing federal class-action suit brought by New York activists in 1971 to challenge the NYPD's right to use covert tactics to monitor them and undermine their political projects. The Handschu plaintiffs originally hoped that the court would find the NYPD's covert activities unconstitutional and would intervene on behalf of all New Yorkers thus targeted. After the conservative Burger Court challenged the pro-activist decisions of the previous Warren Court, the plaintiffs abandoned their ambitious goals and settled with the defendants. The Handschu defendants easily sidelined this settlement in the wake of the …

World Of Water: Betsy Damon’S Ties To Ecofeminism, Colleen Sullivan

Dissertations and Theses

This thesis establishes a critical examination of the evolution of Betsy Damon’s artistic practice as overtime she engages with ecofeminist thought. As a whole, this work extends contemporary scholarship on ecofeminist engaged art to include Damon’s artistic production while amplifying social and critical ecofeminism as necessary ideologies to explore when analyzing art through an ecofeminist lens. Beginning with her first environmentally focused work in the United States the organization of the following chapters reveals Damon’s deepened understanding and exploration of ecofeminist principles and their application to her artistic practice. It goes on to further explore Damon’s pursuit of environmentally sustainable …

Analysis Of Blue Fountain Pen Ink By Uv-Vis Spectroscopy, Atr-Ftir Spectroscopy, And Thin Layer Chromatography Enhanced With Rgb Spot Evaluation To Construct A Database For Comparison And Identification., Elliot D. Quinteros

Dissertations and Theses

Pen ink can be a crucial piece of physical evidence in the area of Forensic Science. For example, evidence such as notes, letters, printed documents, checks, currency, ransom notes, and books may contain ink. Analysis of ink is typically done for identification or differentiation purposes. To improve existing methods, it was proposed to create a database with many samples and experimental information. The methods used and evaluated were thin-layer chromatography (TLC) enhanced with RGB spot evaluation, UV-Vis spectroscopy, and ATR-FTIR spectroscopy. All three methods were used to analyze 89 fountain pen ink samples. All three methods were able to discriminate …

Sea Surface Temperatures And Vertical Wind Shear As Precursors To Tropical Cyclone Activity In The Caribbean And An Expanding Main Developing Region, Keneshia Hibbert

Dissertations and Theses

Sea surface temperatures and vertical wind shear are essential to tropical cyclone formation. TCs need warm SSTs and low shear for genesis. Increasing SSTs and VWS changes influence storm development. This work analyzes SST and VWS trends for the Caribbean, surrounding region, and the Atlantic hurricane main developing region from 1982 to 2020. Storm intensity increases significantly during this period. Annual and seasonal trends show regional SSTs in the MDR are warming annually (0.0219°C yr^-1) and per season (0.0280°C yr^-1). Simultaneously, VWS decreases during the late rainfall season at 0.0556m/s yr^-1 in the MDR and …

Poly(Β-Gal-Thr): A New Scalable Synthetic Mucin, Manuel A. Lema

Dissertations and Theses

A method for the preparation of glycosylated polypeptides via the nucleophilic ring-opening polymerization of a glycosylated N-carboxyanhydride (NCA) monomer is reported. The synthesis of 2,3,4,6-tetraacetyl-β-galactose-threonine N-carboxyanhydride (β-AcO-Gal-Thr-NCA) monomer in 5 steps with an 8 % overall yield is described, and the single-crystal X-ray structure is provided. The effect of a series of Ni⁰-based organometallic initiators, nucleophilic amine initiators, co-catalysts, and solvents on the polymerization were explored. The kinetics of the three most promising conditions were studied in greater detail. The conditions that provided the highest yield, low polydispersity (Ð), and …

A Temporal Examination Of The Connections Between Convective Available Potential Energy And Convective System Development, Chad A. Small

Dissertations and Theses

In 1983, the World Climate Research Programme launched its first project: the International Satellite Cloud Climatology Project (ISCCP). While the ISCCP has succeeded in many of its cataloging and analytical goals, one of its flagship products, the Convection Tracking (CT) Database does not contain certain environmental parameters that are essential in understanding how, and when, convection is initiated or intensified. The development of mesoscale convection – notably, convective systems (CS) – is also largely dependent on parameters like convective available potential energy (CAPE) which the ISCCP CT Database does not record. By tying information on CAPE to CS, discoveries in …

Looking At The Donor Character Through A Formalist Lens, Elena Rodriguez

Dissertations and Theses

No abstract provided.

The Strategic Use Of External Threat In The Shaping Of Russian Domestic And Foreign Policies, Roman Voytovych

Dissertations and Theses

The state of Russia has experienced multiple shifts during various phases of its development and, along with that, it has influenced the world of international diplomacy on a grand scale. From being the world`s second superpower with huge military and political capabilities to becoming a disintegrated regional power, there definitely has been a certain degree of change which has impacted both the Russian political establishment as well as ordinary people. The slow process of the degradation of the “big empire” actually had its roots during Soviet times when the Soviet Union faced the Chernobyl catastrophe, the war in Afghanistan, the …

China’S Foreign Aid Loans To Africa; Acts Of Extraction Or Development?, Francisca F. Ihekaire

Dissertations and Theses

The continent of Africa is considered a developing region due to the high rate of poverty and lack of infrastructure, and China has stepped up to offer loans to countries in need across the continent. The billions of dollars in loans that China has widely distributed among African countries raises serious concerns. Angola and Zambia are two countries in Africa considered as developing nations. The two countries, in dire need of infrastructure, have desperately sought loans from the Chinese government. Chinese loans have become common among nations even though respected international financial institutions warn against the hidden conditionalities that are …