Social and Behavioral Sciences Commons^™

Exploring Nitrogen Fixation In Methanosarcina Acetivorans, Rylee Cook

Biological Sciences Undergraduate Honors Theses

As of 2016, the genomes of over sixty species of methanogenic archaea have been sequenced.4 Research on the genomes of methanogens such as M. acetivorans led to the characterization of numerous genes with unknown functions. Genes similar to those of nitrogenase have been shown to possess functions unrelated to nitrogen fixation, such as F430 biosynthesis genes. 5,6,7 My research focused on the uncharacterized gene clusters ma2032-33 and ma1631-33 (Figure 1). These genes have conserved nitrogenase domains: ma2032 has fused nifH and nifD domains, while ma2033 has a nifD domain. The ma1631-33 gene cluster contains two nitrogenase homologs and one iron …

Elevated Levels Of External Cysteine Inhibit Nitrogen Fixation By The Methanogenic Archaeon Methanosarcina Acetivorans, Regan Massey

Biological Sciences Undergraduate Honors Theses

Methanogens are nitrogen fixing and methane producing archaea that play a key role in the cycling of carbon and nitrogen on earth. The global carbon and nitrogen cycle is vital to all life which makes the methanogen a primary organism of study. Methanogens are the only archaea capable of fixing nitrogen, and in order to do so, methanogens use a vital enzyme called the nitrogenase which fixes dinitrogen (N2) to ammonia (NH3). Expanding our understanding on metabolic processes of methanogens allows us to understand their environmental impact and advance their use in biotechnological applications. Methanosarcina acetivorans is the model used …

Structural Formation And Functionality Of The Spoiie Protein In Clostridium Difficile, Rachel Siebenmorgen

Biological Sciences Undergraduate Honors Theses

My research efforts were directed toward the structure and functionality of a protein, designated SpoIIE [11], which previously has been shown to regulate C. difficile peptide utilization in addition to sporulation and toxin release. The SpoIIE protein is found in all spore-forming gram-positive bacteria and is a crucial component in activation of transcription factors and septum formation thus affecting the regulation and timing of spore development [11,12]. A truncated form of the SpoIIE protein named SpoIIE∆TM was used in an effort to determine the structure of an important but uncharacterized linker domain of the protein. If the structure and specific …

Examining Difference In Social Perceptions Between Women Using Hormonal Contraceptives And Naturally Cycling Women, Caroline B. Johnson

Biological Sciences Undergraduate Honors Theses

The term “stress” refers to a person’s psychological and physiological response to the demands and pressures of the world around them (Farlex, 2021). Past research has shown that stress can have negative side effects on a person’s well-being (Aneshensel et al., 1991; Wunsch et al., 2017; Michie, 2002). Although people experience stress, some people perceive more stress than others. Perceptions are important because the way one understands certain conditions can elicit distinct emotional and physiological responses (Kemeny, 2003). An important factor that has not received a lot of attention is women’s use of hormonal contraceptives. In the United States, 24.4% …

The Influence Of Temperature And Body Size On Food Consumption In Prairie Lizards (Sceloporus Consobrinus), Morgan Pelley

Biological Sciences Undergraduate Honors Theses

Understanding the effect of temperature on physiological and digestive processes, such as voluntary consumption rate, is critical for assessing the impact of climate change. Food consumption is required for lizard survival and reproduction and its rate is dependent on temperature. For ectotherms, as temperatures increase, the amount of food consumed to meet the energy requirements related to survival and reproduction must also increase. Information on the amount of food voluntarily consumed may aid in determining if lizards can meet energy requirements. Such information could also aid in predicting survival of lizard populations, through construction of predictive climate change models. In …

Spike Protein Structural Dynamics Of Sars-Cov-2 Coronaviruses Studied Using Molecular Dynamics, William Strickland

Biological Sciences Undergraduate Honors Theses

Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has overwhelmingly impacted the global population, accounting for millions of confirmed infections and deaths over the last year. The virus’s influence on the health and safety of individuals, the economy, and daily life has been disruptive and devastating. While SARS-CoV-2 and SARS-CoV-1, two closely related members of the SARS coronaviruses, have shown the ability to cross the species barrier and infect humans, SARS-CoV-2 has predominantly been the virus responsible for the number of infections presently known. SARS-CoV-2 has also proven to be volatile, as many variants have …

The Effects Of Time Restricted Feeding On Markers Of Type 2 Diabetes, Brooke Martin

Biological Sciences Undergraduate Honors Theses

Type 2 diabetes is one of the fastest growing chronic diseases in the country, comprising 10% of the American population. Obesity rates are at an all-time high and greatly increase risk factors for developing diabetes. Insulin resistance is the main feature of type 2 diabetes and causes management of the disease to be extremely difficult. Currently there are different possible treatments for type 2 diabetes including medication and dieting. However, diets involving fasting, though high in popularity, do not have a lot of evidence regarding their ability to prevent the development of type 2 diabetes.

Time restricted feeding (TRF) is …

How Flow Regime Affects Predator-Prey Relationships Of Stream Darter And Shiner Species, Anna E. Richardson

Biological Sciences Undergraduate Honors Theses

Analysis of the interactions between abiotic and biotic factors of environments and ecosystems is a highly valued area of research. This study focuses on the interactions between the biotic component of predation and foraging of certain stream fish species and the abiotic component of the flow regime that those species reside in. Gut content analysis followed by statistical calculations in the form of t-tests and chi -quared tests were performed on two fish species who both inhabited a stream with a groundwater flashy flow regime as well as a stream with a runoff flashy flow regime. The research showed that …

Regulation Of The Reaction Between Cytochrome C And Cytochrome C Oxidase In The Mitochondria, Anders Nowell

Biological Sciences Undergraduate Honors Theses

Cytochrome c (Cc) is a multifunction protein that has important life and death functions in the cell. In the electron transport chain (ETC), Cc transfers electrons from cytochrome bc₁ to cytochrome c oxidase (CcO), which helps build the electrochemical gradient that drives ATP synthase. The reaction of Cc with CcO is very important in ETC regulatory processes. Previous research shows phosphorylation sites in Cc that affect the binding with CcO, with measurable effects on k_d, k_f, and K_D. These effects result in changes in mitochondrial membrane potentials, respiration, and reactive oxygen species (ROS) …

The Effects Of Hormonal Contraceptive Use On Perceptions Of Social Stress In Women, Ashton Jones

Biological Sciences Undergraduate Honors Theses

Hormonal contraceptives are widely used due to their efficiency in preventing pregnancy. Although women are often informed of the physical effects of hormonal contraceptives, there is little emphasis on mental effects, such as increased rates of depression and changes in social perception. The current study examined perceptions of social stress among women before beginning hormonal contraceptives, and two months after using hormonal contraceptives. I hypothesized that women would experience increased social stress after beginning hormonal contraceptives, compared to a control group of women who were also assessed twice. Results did not support this hypothesis; there was no difference in interpersonal …

Using Ai To Examine Nocturnal Moth Pollination, Conor Moriarty

Biological Sciences Undergraduate Honors Theses

The importance of insect-mediated agriculture cannot be understated especially in the wake of pollinator population declines. Most research of insect-mediated pollination is focused on diurnal pollinators like the honeybee (Apis mellifera). Deepening our understanding of how other pollinators, such as nocturnal pollinators, can benefit agriculture and ecosystems will be very important as honeybee populations decline. I explored nocturnal moth interactions with flowering apple flowers during their pollination season to better understand how these nocturnal pollinators interact with the plants. To accomplish this, I used a University of Arkansas farm area with a dedicated apple orchard. I gathered my raw data …

Side-Channel Analysis On Post-Quantum Cryptography Algorithms, Tristen Teague

Computer Science and Computer Engineering Undergraduate Honors Theses

The advancements of quantum computers brings us closer to the threat of our current asymmetric cryptography algorithms being broken by Shor's Algorithm. NIST proposed a standardization effort in creating a new class of asymmetric cryptography named Post-Quantum Cryptography (PQC). These new algorithms will be resistant against both classical computers and sufficiently powerful quantum computers. Although the new algorithms seem mathematically secure, they can possibly be broken by a class of attacks known as side-channels attacks (SCA). Side-channel attacks involve exploiting the hardware that the algorithm runs on to figure out secret values that could break the security of the system. …

Community-Based Programs As Spaces For Critical Consciousness, Not Containment : Exploring The Perspectives Of Black Youth, Carrie Bergeson

Theses, Dissertations and Culminating Projects

Historically Black youth have been labeled as needing to be “saved” and “fixed” because they are “at-risk,” “broken,” and more likely to subscribe to deviant behavior. This deficit rhetoric frames community-based education programs (CBEPs) that serve Black youth as vital spaces that must prevent and save Black youth from subscribing to undesirable behaviors. Therefore, this study builds on the paucity of literature regarding CBEPs as spaces that view Black youth as valuable and worthy and encourage youth to critically examine the world around them, often withholding opportunities and resources. With critical consciousness (Freire, 1968) as the framework, this qualitative study …

Impact Of Family Expectations On The Marital Practices Of Haitian-American Couples, Kencia Mele

Theses, Dissertations and Culminating Projects

This paper analyzes how family expectations from the Haitian culture manifest in the marriages of middle-aged Haitian-American couples. This study emphasizes that the evolution to biculturalism is a major factor in the adjustments of cultural expectations. Four middle-aged Haitian-American couples were interviewed via Zoom individually. They were asked to describe how they believed Haitian culture and family expectations influenced their family and marriage life. The results indicate that the middle-aged Haitian-American couples adhere to explicit and implicit family expectations set out by their families of origin; these expectations were influenced by Haitian culture. The major themes from the study were: …

Sustainability, A Competitive Advantage In The Corporate World, Samantha Kennelly

Economics Undergraduate Honors Theses

Abstract: Over the years, society has become more aware of the impact they leave on the environment. For this reason, many are wondering what can be done to curb their footprint, and research has shown that customers now more than ever are demanding more sustainable goods. The aim of this paper is to provide an in-depth analysis of the relationship between corporate social responsibility, consumer desires, and sustainability as a competitive advantage. I will first discuss the history and present factors surrounding environmental problems, in particular marine plastic pollution, we face today. I will define microplastics and marine plastics and …

Economic Viability Of Weed Management Strategies In High-Tunnel Tomato, Gracie Morrison

Crop, Soil and Environmental Sciences Undergraduate Honors Theses

Cost-effective weed suppression is an important consideration for tomato growers. Growers often choose methods which minimize hand labor, as hand weeding can be prohibitively expensive. This project determined economic viability of high tunnel tomatoes treated with several methods of weed control, both organic and chemical. These methods included: 2-week hand weeding, 1-week hand weeding, preemergent, straw, landscape fabric, and untreated weedy control plots. These treatments were applied to randomized blocks in a high-tunnel. Weeding, planting, and harvest were all timed to determine labor and material costs of weed management strategy implementation. After harvest, marketable yield was weighed to determine revenue. …

Determining Earthquake Impacts On Arkansas' Roadway Network: An Application Of Hazus., Simon Rothwell

Civil Engineering Undergraduate Honors Theses

Natural hazards are a dangerous and unpredictable aspect of life on earth. They can cause devastating damage to our surroundings that makes movement of people, goods, and emergency services difficult. There is a need to plan for these disasters to ensure that damages to our infrastructure and people are minimized. It can be difficult for planners to determine which parts of a roadway network are most vulnerable to a specific disaster and what their impact on the rest of the network may be. This thesis uses a nationally available natural disaster estimation tool developed by FEMA called “Hazus” (FEMA, 2020). …

Design Of A Freight Transportation Outreach Curriculum, Breanna Stoesz

Civil Engineering Undergraduate Honors Theses

This project is centered around finding a solution to the shortage of truck drivers within the freight industry. Specifically, this project aims to lessen this shortage by ensuring potential future drivers are aware of the benefits of the industry and are encouraged to consider this career path for themselves. By producing an engaging and educational freight transportation curriculum for middle and high school students to go through in outreach programs, these students would have an increased likelihood of joining the trucking profession and encourage others to become informed about the profession as well. In addition to the direct driving role, …

Effects Of One-Pass Microwave Drying On Rice’S Utilization In The Brewing Process., Christopher Stuckey

Food Science Undergraduate Honors Theses

Rice is utilized as an adjunct grain by the beer manufacturing industry. Before utilization, the rice has to be dried to a desired moisture content. The drying process employed may have an impact on the rice’s physicochemical properties which influence the rice’s performance in the brewing process. This study focused on investigating the impact of microwave drying on rice’s physicochemical properties and utilization in the brewing process. Rough rice samples at an initial moisture content of 19.7% wet basis were exposed to microwave dryer set to deliver 525 kJ/kg of energy in a single drying pass. The effects of the …

Using Community Science To Assess The Effect Of Wing Pattern And Weather On Butterfly Behavior, Abbigail Merrill

Animal Science Undergraduate Honors Theses

Signaling in insects is used as communication and for attraction of mates. The physical appearance of the insect as well as conditions such as weather can play a role in visual signaling, by influencing the wavelengths of light available, and subsequent signal detection. We do not know, however, whether signals butterflies present broadly correlate with how they behave. In this study, we looked at the wing patterns and behavior of butterflies in Northwest Arkansas over a 3.5-year period to assess the relationship between wing pattern, weather, and behavior. We used observational data collected by hundreds of University of Arkansas students …

Effects Of Retail Case Environment And Led Lighting Temperature On Color And Oxidation Of Previously Frozen Ground Beef Patties, Devin Elaine Whiteside

Animal Science Undergraduate Honors Theses

The purpose of this study was to investigate different environments of retail cases and LED lighting temperatures to observe how these conditions affect oxidation of previously frozen ground beef patties. Coarse ground beef (85% lean) was purchased from a commercial beef processor, fine ground through a 10 mm grinder plate, and then formed into 1/3-pound patties with an automatic patty forming machine. Patties were then randomly assigned to four different treatments: open-front display cases with 3000 K lighting (OPEN3000), open-front cases 3500 K lighting (OPEN3500), reach-in door display with 3000 K lighting (CLOSED3000), and reach-in door display at 3500 K …

Pandemics And Animal Welfare: A Quantitative Inquiry Into How The Covid-19 Pandemic Has Affected The Companion Animal Industry In Northwest Arkansas, Kayla N. Desmet

Animal Science Undergraduate Honors Theses

Since the emergence of the COVID-19 pandemic in late 2019, industries have been impacted globally. The companion animal care industry has not received much recognition in mainstream news, and though multiple grants have been allocated (Nolen, 2020), limited resources were available to individual facilities such as animal shelters, animal day cares, and boarding facilities. Little is known about the long-term effects of the pandemic on these facilities and how companion animal care may have changed. The purpose of this study was to explore the day-to-day impacts and long-term effects of COVID-19 on the companion animal industry in Northwest Arkansas from …

The Future Of Urban Technology: Exploring Smart Cities And Transportation Through Game Theory And Scenario Planning, Matthew Wilson

Architecture Undergraduate Honors Theses

Technological innovation is occurring at a rapid pace in the world of personal devices. This trend of change has not been able to occur as fast in the city infrastructure. Consumers are curious about the next generation of technology and the integration of artificially intelligent technology in transportation and the urban fabric. In this project, I study the motivations and values of a set of characters involved in the integration and innovation of Smart City Technology. These characters create potential future scenarios of the city from their actions and reactions to specific decisions.

This body of work can provide a …

Racial And Ethnic Differences In Health Insurance Coverage Among Workers In Texas, Trenton P. Overstreet

Theses and Dissertations

The purpose of this paper is to analyze the effect of race and ethnicity on health insurance coverage for working age (18-61) adults in Texas. I focus on Texas for three reasons. First, Texas is the second largest state in the United States. Second, Texas is a majority-minority state where Hispanics are the largest ethnic group. Finally, Texas has not yet expanded Medicaid eligibility to individuals with family incomes under 138% of the federal poverty threshold. In this analysis, I use data from the Annual Social and Economic Supplement (ASEC) to the Current Population Survey (CPS). The CPS is a …

Anthropomorphism In Architecture: An Investigation Into Anthropomorphism Through Ancient Greco-Roman Religious Structures, Emily Wilcox

Architecture Undergraduate Honors Theses

This paper will outline and detail an investigation into religious Greco-Roman structures of antiquity through the lens of anthropomorphism. Through defining anthropomorphism, three lenses of thought have presented themselves as means of inquiry: metaphor, scale and proportion, and ergonomics. Previous research into these structures and cultures has shown that there was indeed consideration for the human body in designing in construction; this project hopes to solidify these claims and present new supporting information regarding specific relationships to the body using anthropomorphism. Many contemporary buildings approach the relationship to the human body as a mask or an afterthought, disregarding what reflecting …

Spaces Of The Tragic: Modern Dramatic Tragedy And Contemporary Memorial Design, Shiloh Bemis

Architecture Undergraduate Honors Theses

Humans use narrative to understand the world around us. At early ages we are exposed to storytelling with variable intent, from cautionary tales to the inspirational and everything in between. The dialectic strength of narrative mediums is well-known and well-studied. Theatre is one of the world’s oldest enduring forms of storytelling and has a strong ability to reflect and adapt with cultures as they develop, as a means of commentary and cultural reflection.

Architecture shares theatre’s ancient roots and has always been an important method of communication and expression. However, its tactics have historically been less narrative-centric than theatre and …

A Story Of The Social Life Of Yulupa Cohousing, Kayla Ho

Architecture Undergraduate Honors Theses

This capstone is a study of the lived social experience of one cohousing community. Cohousing communities are designed with the intention of fostering a community with a mixture of privately-owned units and publicly shared spaces and responsibilities. The study is conducted at a significant point in American history: these communities are a fast-growing phenomenon in the United States yet they remain unknown and/or unattainable to many Americans.

Qualitative information from the community’s current residents is gathered by using research tools of interviewing and photography. Interviews were completed virtually due to the COVID-19 pandemic. Photographs were created during a three-day visit …

Moral Distress, Burnout, And Moral Injury In Healthcare Professionals, Sophia Gibson

Anthropology Undergraduate Honors Theses

For doctors and other health care professionals, experiences of care too often involve burnout and moral distress. Making both visible to begin addressing them takes up the main concern of my thesis. Burnout and moral distress swallow a life. Suddenly you aren’t going on that shopping trip with friends, you can forget about going to that movie or play. You are too tired to drag yourself out of bed, instead getting caught in a cycle of sleep and work with no time for a break or even to process what happened last shift. Who’s going to have a nice relaxing …

Factors Affecting Graduation With Honors: A Case Study In Business, William Litzinger

Agricultural Economics and Agribusiness Undergraduate Honors Theses

Many first-year college students elect to enroll in their university’s honors program. These programs offer students many educational benefits not provided to non-honors students, such as smaller class sizes, priority registration, and added faculty interaction. However, of the students that enter the university as an honors student, many fail to complete their honors program. Researchers have documented completion rates as low as 18.45% (Campbell and Fuqua, 2008). So why are honors graduation rates so low? In this study, variables were examined that the literature suggests affects honors graduation rates (High School GPA, ACT/SAT scores, AP credits, GPA 1^st term …

The Effects Of Price And Brand On The Perceived Quality Of Ladies Leggings Between Competitive Retailers, Olivia Thornton

Apparel Merchandising and Product Development Undergraduate Honors Theses

The purpose of this study is to determine if brand or price affects the quality perception of the consumer. The research examined what consumers look for when evaluating quality of a garment. Previous studies have shown that consumer expectations of quality in a garment is inconclusive. Research objectives that guided the study were:

- Does brand contribute to the consumers perception of quality?

- Does price contribute to the consumers perception of quality?

This study is a quantitative study using a digital survey and questionnaire looking into fabric, construction, and aesthetics of the leggings. This study involved human subjects; therefore, …