Service Learning Commons^™

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 …

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 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 …

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 …

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 …

Portfolio Optimization Using The Business Cycle Approach, Maxwell Kane

Finance Undergraduate Honors Theses

The purpose of the study is to investigate whether a portfolio manager could enhance his/her portfolio optimization strategy by periodically adjusting the equity sector weights to a diversified stock portfolio. The business cycle approach focuses on providing a framework for adjusting sector weightings to take advantage of recurring trends in economic growth that signal a phase transition soon. Once a shift in stages is detected, investors are advised to adjust their portfolio to overweight a specific sector that is projected to outperform in the next phase of the cycle and to offset exposure in sectors that tend to underperform during …

Free Convection Heat Transfer From Plates, Alexa Moreno

Chemical Engineering Undergraduate Honors Theses

The purpose of this honors thesis is to create an experiment for the CHEG Lab I course. This report explains the motivation for creating this heat convection experiment, the results of performing the experiment, and provides recommendations for future work on this experiment. Multiple experiments were performed to assess materials and parameters to be investigated. It was determined that a 0.5” plate has smaller percent error and accommodates for the desired timeframe for a Lab I experiment compared to the first plate used (1.5” thickness). Recommendations for expanding on this project include adding experiments using vertical geometry for heat convection …

Quantification Of Slit-Like Pores Through Using Liquid Crystals As A Template, Dominique Savage

Chemical Engineering Undergraduate Honors Theses

The purpose of this research is to manufacture a membrane with slit-like pores to achieve particle filtration. Slit-like pore membranes are preferred over conventional membranes with cylindrical pores since slit-like pores have two length scales that can be manipulated to better control cut off and flux through the membrane. This project focuses on manufacturing slit-like pore membranes through the use of two liquid crystals, 1,4-bis[4-(6-acryloyloxyhexyloxy)benzoyloxy]-2-methylbenzene (RM257) and 4-Cyano-4′-pentylbiphenyl (5CB). This method for making slit-like pores has not been widely investigated nor has the morphology of the membrane pores and mechanical properties of such a membrane been addressed. It was found …

Synthesis And Phase Transition Characterization Of Liquid Crystal Membranes With Slit-Like Pores, Isaac Hopwood

Chemical Engineering Undergraduate Honors Theses

Membranes with slit-like pores have been of interest for some time due to their ability to reject smaller particles than traditional cylindrical-pored membranes at the same fluid flux. However, using liquid crystals as a template for this sort of membrane has not been thoroughly investigated. In this study, the liquid crystal mixture of RM257 (2-Methyl-1,4-phenylene bis(4-(3-(acryloyloxy)propoxy)benzoate)) and 5CB (4-Cyano-4'-pentylbiphenyl) for the purpose of manufacturing membranes with slit-like pores, the phase transition behavior of this LC mixture at various mole fractions of RM257, and the impact of mole fraction of RM257 in the liquid crystal (LC) mixture and membrane manufacturing conditions …

Diffusion Of A Salt In An Aqueous Media, Aldaly Pineda Hernandez

Chemical Engineering Undergraduate Honors Theses

Diffusion is defined as the net transfer of a molecule from a high concentration region to a low concentration region. The concept of diffusion is used in a very important process called "desalination." Desalination is a separation process used to reduce the salt content dissolved in brackish water to make it suitable for human consumption, irrigation, and industrial use.

In desalination plants, it is important to monitor the constantly changing salt content of water, partly due to the diffusive effect. The main purpose of this experiment was to study the diffusion of NaCl in water at two NaCl concentrations. The …

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, …

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). …

Supply Chain Disruptions During The Pandemic And Ways Food And Beverage Companies Are Looking To Find Stability, Jacob Merz

Supply Chain Management Undergraduate Honors Theses

In March 2020, the world was impacted by the Covid-19 pandemic and is still dealing with its repercussions. This paper examines how the pandemic has had an impact on the food and beverage industry. In this study, there are three disruptions highlighted by industry professionals and online articles. The professionals within the supply chain industry cited in this research are Jane Gringer-Flinn, Director of Customer Solutions at Coca-Cola, Whit Calhoun, Senior Director of Logistics at The Fishin’ Company, Judy Thorne, Senior Director Distribution Services at Tyson Foods, and Bill Carver, Senior Director at J.B. Hunt Transport Services Inc. The three …

Colostrum Pill Supplement Business Plan, Jackson Scott

Supply Chain Management Undergraduate Honors Theses

The health benefits of supplementing bovine colostrum are plentiful and extremely under-marketed. Bovine colostrum provides an immense amount of immune system support which is a growing concern for consumers as a result of the pandemic. The other customer segment for bovine colostrum is people into fitness and putting on lean muscle mass. Natural growth hormones and bioactive proteins promote the growth of muscle mass. Finish First Nutraceuticals will be a subset of Finish First Equine, a well established horse supplement company which has supplemented the last two Kentucky Derby winners.

How The Financial Services Industry Is Utilizing Social Media To Expand Their Client Base, Kristen Stewart

Marketing Undergraduate Honors Theses

Social media is becoming an increasingly important aspect of all companies’ marketing strategies. It is almost imperative for companies to advertise through social media if they want to have a fair chance of reaching the younger generation. In fact, “the majority (97%) of Gen Z consumers say they now use social media as their top source of shopping inspiration; 65% say they use social media to find entertaining content; and 61% of them are specifically interested in watching more video content” (Kastenholz, 2021). This proves that social media can make a significant and lasting impact on a company’s success. Social …

Colgate-Palmolive Customer Development Year-Long Internship Project, Maggie Johnson

Marketing Undergraduate Honors Theses

From June 2021 to May 2022, I had the privilege of being the Customer Development Intern in the home care department at Colgate-Palmolive. In this thesis I will unpack the experience of working with Colgate Palmolive, specifically as it pertains to my largest project for the company.

The genesis of the project was informed by observations of the company over the course of the internship. The company had a noticeable gap in the data collection tools it was utilizing. I, along with the manager and analyst of the home care team, identified a solution by using Walnut in Google Data …

Tiny Tusks Internship: Barriers To Breastfeeding Surrounding Neonatal Intensive Care Units, Brianna Purser, Quinn Owen

The Eleanor Mann School of Nursing Undergraduate Honors Theses

It is known that breastfeeding is beneficial to mothers and their children, and it is recommended that mothers exclusively breastfeed for the first six months of their infant's life. Despite this, in the United States only 1 in 4 infants is exclusively breastfed for the first six months. After being an intern for Tiny Tusks Breastfeeding and Infant Support, a program designed to facilitate and educate about breastfeeding, we have seen firsthand the barriers to breastfeeding. The goal of this literature review was to investigate barriers to breastfeeding specifically surrounding neonatal intensive care units (NICU) and how to address those …

Effects Of The Covid-19 Pandemic On The Health Behaviors And Feelings Of Career Preparedness Of Baccalaureate Nursing Students, Mary Haggard

The Eleanor Mann School of Nursing Undergraduate Honors Theses

The aim of this study was to determine if the COVID-19 pandemic affected the health behaviors and feelings of career preparedness of undergraduate nursing students. Participants were recruited from the pre-licensure program at the Eleanor Mann School of Nursing, at the University of Arkansas, Fayetteville during the Fall 2021 semester. The final sample consisted of 92 participants. This study used a cross-sectional design, retrospectively measuring behaviors and attitudes pre-pandemic and during the lockdown period. Two-tailed paired t-tests were run on the health behavior sections and feelings of career preparedness sections independently. Results were deemed significant with an alpha value set …

Willow Creek Internship: The Effects Of Delayed Bathing On The Health Of Mothers And Newborns Post-Birth, Cara Yates

The Eleanor Mann School of Nursing Undergraduate Honors Theses

The implications of newborn bathing have become a rising topic in couplet care. The practice of bathing after birth can be linked to many things such as glucose control, temperature stability and exclusive breastfeeding. The timing of the initial bath also has effects on immediate skin to skin time between newborn and mother and therefore effects the initial bonding period post birth. This paper explores the current research on this practice.

An Analysis Of The Suspect: The Impact Of Economic Conditions On Crime, Ryan Perez

Economics Undergraduate Honors Theses

Every place in the world experiences a level of crime within its borders, but there is much contention as to which factors lead to crime. Economic conditions, due to their association with poverty, are frequently discussed as a possible contributors to crime rates. This analysis examines four macroeconomic variables (GDP per capita, unemployment rate, inflation rate, and interest rate) and their effect on crime rates (violent, property, and total). After thoroughly reviewing the philosophical nature of crime, the current economic conditions through the lens of the selected macroeconomic variables, and the present criminal landscape throughout the United States and the …

Evaluation Of Essential Oil Products On Performance, Intestinal Permeability, Bone Mineralization, And Oxidative Stress Parameters On Broiler Chickens Under Heat Stress Conditions, Jared Ruff

Poultry Science Undergraduate Honors Theses

The goal of this study was to show how dietary supplementation of three different formulations of essential oils (EO) affected the performance of broiler chickens during heat stress (HS). Day-of-hatch Cobb 500 chicks (n = 500) were randomly divided into four groups: 1. HS control + control diets; 2. HS + control meals supplemented with 37 ppm EO of Lippia origanoides (LO); 3. HS + control diets supplemented with 45 ppm LO + 45 ppm EO of Rosmarinus officinalis (RO) + 300 ppm red beetroot; 4. HS + 45 ppm LO + 45 ppm RO + 300 ppm natural betaine. …

Implementing 2nd Milk’S Use Of The World Health Organization Standardized Growth Charts To Better Track The Growth And Development Of The Malnourished And Orphaned Infants In Their Supplemental Nutrition Program In Malawi, Allie Wycoff

The Eleanor Mann School of Nursing Undergraduate Honors Theses

This article considers the history and implications of the World Health Organization (WHO) standardized growth charts as well as the significant impact that growth chart utilization may have on 2^ndMilk’s ability to understand and track the nutritional status of the malnourished orphaned infants in their formula program. Specifically, this literature review examines whether or not the WHO growth charts are a meaningful tool for 2^ndMilk to adopt into their monthly baby assessments. The WHO growth charts are calibrated to express an accepted international “norm” for what an adequately nourished child looks like. In a recent service-learning …

Semi-Supervised Spatial-Temporal Feature Learning On Anomaly-Based Network Intrusion Detection, Huy Mai

Computer Science and Computer Engineering Undergraduate Honors Theses

Due to a rapid increase in network traffic, it is growing more imperative to have systems that detect attacks that are both known and unknown to networks. Anomaly-based detection methods utilize deep learning techniques, including semi-supervised learning, in order to effectively detect these attacks. Semi-supervision is advantageous as it doesn't fully depend on the labelling of network traffic data points, which may be a daunting task especially considering the amount of traffic data collected. Even though deep learning models such as the convolutional neural network have been integrated into a number of proposed network intrusion detection systems in recent years, …

Malicious Hardware & Its Effects On Industry, Gustavo Perez

Computer Science and Computer Engineering Undergraduate Honors Theses

In recent years advancements have been made in computer hardware security to circumnavigate the threat of malicious hardware. Threats come in several forms during the development and overall life cycle of computer hardware and I aim to highlight those key points. I will illustrate the various ways in which attackers exploit flaws in a chip design, or how malicious parties take advantage of the many steps required to design and fabricate hardware. Due to these exploits, the industry and consumers have suffered damages in the form of financial loss, physical harm, breaches of personal data, and a multitude of other …

Evaluating Silicon Foliar Sprays As A Strategy To Improve Postproduction Performance Of Potted Basil (Ocimum Basilicum L.), Joshua Tebow

Horticulture Undergraduate Honors Theses

The objective of the study was to evaluate foliar silicon (Si) applications for effects on the growth and performance of container-grown basil during production and resistance to postproduction wilt in retail. Basil (Ocimum basilicum ‘Genovese’ L.) seedling plugs were transplanted into 10-cm diameter plastic containers with peat-based substrate and grown for 42 d in a polycarbonate greenhouse. Plants were irrigated with fertilizer solution consisting of a 17.0 nitrogen (N)-1.3 phosphorus-14.1 potassium water-soluble fertilizer dissolved in tap water at 150 mg∙L-1 N. Foliar sprays containing sodium silicate at 0, 50, 100, 200, and 400 mg∙L-1 Si mixed with deionized water were …

What Were The Factors That Led To The Gamestop Short Squeeze?, Riley Burnette

Information Systems Undergraduate Honors Theses

The world of finance is rapidly evolving - for better or for worse. The introduction of social media in sentimental stock market trading, and new brokerage apps, combined with the new resurgence of retail investors, has led to some interesting results. These new factors in the stock market have challenged the status quo of the stock market. A group of retail investors has led this change on a Reddit forum known as /r/WallStreetBets

In early January 2021, a group of retail investors collaborated a short squeeze on GameStop stock, creating an attack against the hedge funds on a popular Reddit …

Noise Exposure And Hearing Protection In Marching Band Students, Emily Myers

Rehabilitation, Human Resources and Communication Disorders Undergraduate Honors Theses

The purpose of this research project was to investigate collegiate marching band members’ use of hearing protection during rehearsals and performances. A second purpose was to identify the concerns of marching band members about the use of hearing protection. Finally, the third purpose was to determine if the type of protection used, standard or custom, impacted wearing time. Hearing threshold sensitivity, tympanometry, and use of hearing protection were measured prior to the fitting of the custom earmolds and again at the end of the marching season.

Pre-season results indicated that the majority of band members reported they did not wear …

Expanding Image Datasets For Deep Learning By Evaluating Independence Through Coefficient Correlation And Mean-Squared Error, Ayman Yousef

Biomedical Engineering Undergraduate Honors Theses

With deep learning being leveraged more regularly in the field of image classification, particularly in medical imaging, network optimizations have become a field in and of itself. With open source, comprehensive medical image datasets few and far, computational dataset expansion has become a useful tool for researchers without the ability to further manually collect data. However, with the rich amount of data that imaging modalities like multi-photon microscopy collect at a time, there is potential to expand datasets through proper utilization of this data that often time goes unused. Previous deep learning studies have shown that improper expansion can conflate …

Evaluation Of Weight Gain, Feed Intake, Feed Conversion And Oocyst Shedding Of Eimeria Maxima And Eimeria Acervulina In Broiler Chickens, Lauren Laverty

Poultry Science Undergraduate Honors Theses

The purpose of the present study was to evaluate the day and the time of sample collection of an

experimental challenge with Eimeria maxima (EM) and Eimeria acervulina (EA) in broiler chickens. One day old male Cobb-Vantress broiler chickens were randomly allocated to one of three groups with ten replicates (n=8 chickens/replicate). Chickens were placed in battery cages with a controlled age-appropriate environment: Group 1) Negative control (no challenge or treatment); 2) Challenge control (Eimeria challenge only); 3) Challenge + Salinomycin. Challenged chickens were orally gavaged with the mixed culture of EM/EA (10,000 sporulated EM containing 4% wild-type EA) …

Fine Roman Dining At Affordable Pompeian Prices: A New Evaluation Of The Non-Domestic Gardens Of Pompeii, Claire Campbell

World Languages, Literatures and Cultures Undergraduate Honors Theses

Previous scholarship has designated Roman gardens into otium or negotium designations; however, this research on Roman gardens suggests that these concepts often exist in the spaces simultaneously. To address this issue, I compiled catalogs of garden spaces identified at Regio I and Regio VI of Pompeii. This methodology cuts across traditional public and private or productive and aesthetic designations, which will allow me to draw connections between the gardens found in different types of settings. This new catalog methodology of Roman gardens presented in this thesis allows for an integrative analysis of garden spaces, which reveals that these commercial gardens …