Digital Commons Network^™

Irreducible Representations From Group Actions On Trees, Charlie Liou

Master's Theses

We study the representations of the symmetric group $S_n$ found by acting on

labeled graphs and trees with $n$ vertices. Our main results provide

combinatorial interpretations that give the number of times the irreducible

representations associated with the integer partitions $(n)$ and $(1^n)$ appear

in the representations. We describe a new sign

reversing involution with fixed points that provide a combinatorial

interpretation for the number of times the irreducible associated with the

integer partition $(n-1, 1)$ appears in the representations.

Examining The Moderating Effects Of Adult Social Support On The Relationship Between Adverse Experiences And Psychosocial Adjustment, Zachary Wilde

Master's Theses

Exposure to adverse experiences during childhood place adolescents at a disproportionately high risk of developing physical and mental health problems later in life (Anthony et al., 2019; Basto-Pereira et al., 2016; Brown & Shillington, 2016; Felitti et al., 1998). Further, at-risk adolescents, conceptualized as children and adolescents who lack resources for upward mobility, are more likely to be exposed to adverse experiences and thus are at greater risk for these negative outcomes when compared to adolescents who are not considered at-risk (Fernandes-Alcantara, 2018). To obtain better specificity of what outcomes adverse childhood experiences (ACEs) predict in a sample of vulnerable …

Hypoxic Incubation Chamber, Simone Lisette Helfrich, Makenzie Nicole Jones

Master's Theses

This paper describes the design, manufacturing, and testing of a novel controllable hypoxic incubator with fully functional oxygen gas control and temperature control in a humid environment. On the current market, a majority of the few hypoxic incubators use pre-mixed gas that does not offer precise control over gas concentration. The objective for this project was to create a chamber that allows the user to set the O2 concentration to varying set points of % O2 while maintaining the chamber at a constant body temperature, CO2 level, humidity, and sterility. To start the project, multiple concepts were developed for the …

Quantifying Pain: A Ratio Of Cortisol, Substance P, And Pituitary Adenylate Cyclase-Activating Polypeptide As Biomarkers For Pain In Animal Cruelty And Neglect, Danielle Sherer

Master's Theses

Understanding the relationship between cortisol, Substance P, and PACAP during experienced pain and recovery, as well as the contrast between expression levels and serum levels, will provide an objective measure of pain and suffering to aid in the prosecution of animal cruelty and neglect cases.

There is no consensus at this time as to a recognized biomarker for pain experienced by an animal. Cortisol, Substance P, and Pituitary Adenylate Cyclase-Activating Peptide (PACAP) have been investigated separately in various animal and human studies with regard to stress, pain, and injury. Cortisol is a steroid hormone in the glucocorticoid class that has …

Fabrication Of Thin-Film Composite, Reverse-Osmosis Membranes With Polyethylenimine Modifications For Enhancing Membrane Fouling Resistance, Stephanie N. Hamilton

Master's Theses

Increasing water reuse opportunities for communities has become increasingly important as access to clean water is becoming more scarce. Reverse Osmosis (RO) is an advanced treatment technology used in water recycling wastewater for potable reuse applications. RO is a promising technology; however, the membranes have limitations including their high energy demand and their susceptibility to membrane fouling. The main objective of this study was to develop a reproducible method for the fabrication of RO membranes with enhanced flux and reduced susceptibility to fouling. Literature contains numerous publications on fabrication of thin film composite (TFC) RO membranes with high performance. However, …

Testing And Verification For The Open Source Release Of The Horizon Simulation Framewortesting And Verification For The Open Source Release Of The Horizon Simulation Framework, William J. Balfour

Master's Theses

Modeling and simulation tools are exceptionally useful for designing aerospace systems because they allow engineers to test and iterate designs before committing the massive resources required for system realization. The Horizon Simulation Framework (HSF) is a time-driven modeling and simulation tool which attempts to optimize how a modeled system could perform a mission profile. After 15 years of development, the HSF team aims to achieve a wider user and developer base by releasing the software open source. To ensure a successful release, the software required extensive testing, and the main scheduling algorithm required protections against new code breaking old functionality. …

Effects Of Pier Shading On Salt Marsh Plants In Mississippi, Daniel Taylor

Master's Theses

Saltmarshes are important environments that are valuable to both humans and wildlife. As saltmarshes are under threat from erosion, sea level rise, and human development, efforts should be made to conserve them. The vegetation that occupies these environments are vital to the continued preservation of saltmarshes. This study focuses on one potential threat, the effect that pier shading has on prominent saltmarsh plants of Mississippi, Sporobolus alterniflorus and Juncus roemarianus. Sample piers were selected in the three coastal counties of Mississippi and visited at two time periods (2006 and 2021). I focused on the use of irradiance measurements at …

How Chicago Public Schools Engaged African American Parents In The Closing Of Austin Career Academy High School, Shani Blackwell

Master's Theses

The role of African American parents in education reform initiatives in Chicago is not clearly defined. Local School Councils (LSC) allow parents to make school related decisions in Chicago. But LSCs are removed from decisions about whether or not to place school on or off probation, and whether or not to close schools based on performance or building utilization. In 2013, African American and Latinx parents expressed outrage over the decision by Chicago Public Schools (CPS) to close 49 schools with protests, including a hunger strike by a group of parents, and pleas to the Chicago Board of Education (BOE). …

To Be Fair: Colorism And Online Dating Among Young South Asians, Kajal S. Patel

Master's Theses

Online dating is rooted in first impressions through images. Because of this, users of these apps tend to alter their profile pictures to fit a certain criteria that they believe will attract more matches. For people of color, this benchmark is based upon fair skin and European facial features. This has led me to ask, how is colorism reinforced in online dating apps for Indian Americans, and more specifically though, how are the users of these apps portraying themselves in their own profiles as it relates to colorism? Due to various factors Indians with darker skin tend to feel pressure …

Institutionalism, Peer Culture, And Cultural Reproduction In Active Shooter Drills, Lillian Wynne Platten

Master's Theses

Columbine, Sandy Hook, Parkland: these are words that represent moments in history where schools should have become unprecedented sites of tragedy and isolated events. Except Columbine occurred in 1999, Sandy Hook in 2012, and Parkland in 2016, making them almost commonplace alongside hundreds of other mass shootings in the US. In place of gun regulation, schools are mandated to conduct active shooter drills, which mimic actual shootings through simulated events including the use of rubber bullets and masked actors to produce visceral reactions. Research has shown that these drills have produced trauma and desensitization among teachers, administrators, and counselors; but …

Constructing Planetary Citizens Through Ecopedagogy In U.S. Social Studies Standards, Madeline Anne Rainey

Master's Theses

The world is in the age of the Anthropocene, where humans are impacting the environment to disastrous effects. The capitalist economy, promoting neoliberal policies of mass consumption, has exacerbated the world's environmental deterioration and social inequity. The rights and responsibilities people hold have been rapidly changing with the fourth industrial revolution. Globalization and Information and Communications Technology (ICT) have further expanded notions of citizenship. While there have been numerous attempts to bring the environment into schools, it has not emphasized what this crisis deserves. Ecopedagogy, as a critical theory, explicitly examines the interplay between environmental and social problems and challenges …

Taking It Too Far? Examining Derogation In Sexism Confrontations, Bayleigh Smith

Master's Theses

Sexism continues to be prevalent within today’s society (Bates, 2012; Crandall et al., 2018; World Health Organization, 2021), creating the need for methods to respond to such bias. Confrontation is one method that allows targets of sexism to stand up for themselves (Haslett & Lipman, 1997; Hyers, 2007; Kaiser & Miller, 2004), but often comes with social costs (e.g., being disliked, Czopp & Monteith, 2003; Dodd et al., 2001; Gulker et al., 2013; Kaiser & Miller, 2001). However, researchers have not dissected the factors that affect the social costs associated with confrontation (i.e., being labeled as a “sexist”, humor, or …

Cataloging And Engineering Temperate Coliphages Of The Human Urinary Microbiome, Elias Crum

Master's Theses

In the US, around 60% of females will be diagnosed with a Urinary Tract Infection (UTI) in their lifetime, and Escherichia coli is the most implicated etiological agent in UTIs. Despite its frequent association with lower urinary tract symptoms, recent studies have found that the urinary microbiome (UMB), the viral, bacterial, and fungal resident members of the urinary tract, of healthy females can also consist of E. coli. While most research has focused on the bacterial constituents of the UMB, bacteriophages, viruses that infect bacteria, are far more abundant. Bacteriophages (phages) of other human microbiomes have been shown to play …

Bicycling To Level The Field: A Study Of Divvy In Chicago, Bushra Ghaniwala

Master's Theses

With the onset of COVID-19, norms across the world shifted, including the way people moved in major cities. In order to conduct a comparative analysis, understanding transportation habits before COVID-19 hit cities is important. In this paper, I have focused on Divvy bikes in the city of Chicago, which are touted as a means to achieving first- and last-mile transit especially in underserved communities. I am interested in initiating the line of inquiring into who Divvy bikes served during a time when there was major fear around high transmission of COVID-19 on trains and buses due to the close proximity. …

Phylogenetic Relationships Among Fishes In The Order Zeiformes Based On Molecular Data From Three Mitochondrial Loci, Lindsay Scarpitta

Master's Theses

The Zeiformes (dories) are mid-water or deep (to 1000 m) marine acanthomorph fishes with a global, circumtropical, and circumtemperate distribution. Some species have a near-worldwide distribution, while others appear to be regional endemics, e.g., near New Zealand. Six families, 16 genera, and 33 species are currently recognized as valid. Relationships among them, however, remain unsettled, especially in light of recent proposals concerning the phylogenetic placement of zeiforms within the Paracanthopterygii rather than allied with beryciforms or percomorphs. The present study uses mtDNA characters to investigate zeiform interrelationships given their revised phylogenetic placement and attendant changes to their close outgroups, carried …

Comparison Study Of Laboratory Testing Programs Exploring The Influence Of Initial Static Shear Stress On Liquefaction Triggering, Micaela Saqui

Master's Theses

Current state of practice for calculating liquefaction triggering and deformations is outlined in multiple published articles (Seed 1971, Youd et al. 2001, Idriss and Boulanger 2008, National Academies of Sciences 2016, etc.). These methods use a factor of safety analysis with the cyclic stress ratio (the cyclic stress caused by the earthquake normalized by the effective vertical stress in the soil) and the cyclic resistance ratio (the resistance of the soil normalized by the effective vertical stress in the soil). These cyclic ratios are calculated first for free-field sites (no external forces on the soil), then correction factors are used …

Connecting School Climate And Trust: A Content Analysis Of Elements Of Trust In Student And Staff School Climate Surveys, Katherine Thyen

Master's Theses

This study aims to make a concrete connection between trust in schools and school climate. Research indicates that both trust and school climate can positively impact school experiences and performance for teachers and students, but no formal connection has been made between these two elements of schools. In order to answer this study’s research questions of “What differences in frequency and context of trust dimensions exist between student surveys and teacher surveys?” and “How are survey items related to trust dispersed across school climate domains?”, a directed qualitative content analysis was performed. School climate surveys administered to students and teachers …

Interrogating Antagonistic Differences Among Pseudomonas Aeruginosa Cdia Alleles, Haotian Yang

Master's Theses

Bacteria are complex social organisms that live within mixed communities where microorganisms compete for limited resources. We studied Contact-Dependent Growth Inhibition (CDI), a particular type of competition mediated by a type 5b, or two-partner, secretion system that is widely spread among Gram-negative bacteria. CdiB and CdiA make up the two-partner secretion system that mediates CDI. CdiB translocates CdiA to the cell surface, and CdiA delivers its C-terminal toxin domain to the target cell. The C-terminal toxin (Tox) domain of CdiA is highly diverse. We studied Tox domains of various Pseudomonas aeruginosa clinical isolates. We found different strains that contain unique …

Removing Soluble Phosphorus From Tertiary Municipal Wastewater Using Phosphorus- Deprived, Filamentous Microalgae, Aloysia Ahern

Master's Theses

Harmful algal blooms (HABs) can be detrimental to ecosystems, human health, and economies. The low levels of phosphorus remaining in the effluent of municipal wastewater treatment plants can contribute to HAB formation. To achieve more complete phosphorus removal, an effluent treatment method has been proposed that uses phosphorus-deprived, filamentous microalgae to quickly assimilate soluble phosphorus to low concentrations. This study investigated two parameters that influence the feasibility of such a system: (1) the biomass growth productivity of algal cultures during the phosphorus deprivation period and (2) the correlation between the duration of this period and the phosphorus uptake rate by …

Cofermentation, Post-Alcoholic, And Post-Malolactic Fermentation Blending Of Malbec, Merlot And Petite Sirah Wines, Armando Arturo Vega-Osorno

Master's Theses

A two-year study was conducted to assess the effects of cofermentation on red wine varietals. During the winemaking process, wines can be made from two or more varieties by picking, crushing and fermenting them together, a practice known as cofermentation. They can also be blended either after the completion of alcoholic fermentation or after malolactic fermentation. In the first year of the study, two grape varieties, Merlot (Mer), and Malbec (Mal) were cofermented. On the second year, a third varietal, Petite Sirah (PS) was also studied. Cofermented wines containing every possible binomial combination of the varietals was made and one …

Hydrologic Response Of Little Creek To The 2020 Czu Lightning Complex Fire At The Swanton Pacific Ranch, Kylie E. Dupuis

Master's Theses

In this study, stage, streamflow, and precipitation data was collected from small watersheds in the Swanton Pacific Ranch for the first two hydrologic years following the 2020 CZU Lightning Complex. The Little Creek watershed was setup for high-resolution data collection with four separate stage gauge sites (Main Stem, North Fork, South Fork, and Upper North Fork) and four rain gauge sites (Al Smith House, Ridgeline, Upper North Fork, and Landing 23). Stage gauge sites were also established at Queseria, Archibald, and Mill creeks. Preliminary post-fire rating curves were developed for the four sites of Little Creek. The Main Stem (MS) …

Analysis Of Current And Future Flood Hazard In The Sacramento-San Joaquin Delta, Nicholas L. Mcguire

Master's Theses

The primary motivation of this study is to estimate the current and future flood hazard throughout the Sacramento-San Joaquin Delta in the context of sea-level rise. I also analyzed the effects of storm surge and river flow on extreme events to better understand how these events originate and vary spatially and in time. To address this goal, I combined digital water level records (primarily 1983-present) with archival data collected by the California Department of Water Resources (1929-1983) to reevaluate flood hazard in the Delta and investigate the possible sensitivity of the region different sea-level rise projections. Available archival records from …

Design And Analysis Of A Discrete, Pcb-Level Low-Power, Microwave Cross-Coupled Differential Lc Voltage-Controlled Oscillator, Pavin Singh Virdee

Master's Theses

Radio Frequency (RF) and Microwave devices are typically implemented in Integrated Circuit (IC) form to minimize parasitics, increase precision and tolerances, and minimize size. Although IC fabrication for students and independent engineers is cost-prohibitive, an abundance of low-cost, easily accessible printed circuit board (PCB) and electronic component manufacturers allows affordable PCB fabrication.

While nearly all microwave voltage-controlled oscillator (VCO) designs are IC-based, this study presents a discrete PCB-level cross-coupled, differential LC VCO to demonstrate this more affordable and accessible approach. This thesis presents a 65 mW, discrete component VCO PCB with industry-comparable RF performance. A phase noise of -103.7 dBc/Hz …

Mechanisms Of Substrate Selectivity And Transport By Escherichia Coli Atp- Binding Cassette (Abc) Transporter Metni, Yuchun Chen

Master's Theses

ABC transporters are central in many cellular functions including nutrient uptake, signal transduction membrane assembly, and cellular detoxification. Both structural and functional studies have revealed insights into the high-affinity uptake mechanism of the MetNI methionine ABC transporter. Using the energy from ATP binding and hydrolysis, the MetNI-Q system can import L-Met, D-Met, and other methionine derivatives against concentration gradients. Many mechanistic studies of ABC transporter propose a model in which cognate binding proteins sequester substrates in the periplasm and deliver them to the transporter. In contrast, recent in vivo and crystallographic studies of MetNI-Q suggest that some substrates may be …

Ncaa Di Assistant Coaches' Understanding Of Mental Performance And Mental Health Services, Heather Hill

Master's Theses

The National Collegiate Athletic Association (NCAA) has acknowledged the importance of providing student-athletes with psychological services throughout their athletic careers (NCAA, n.d.). Two vital services for student-athletes are mental performance services that are focused on sport-related issues and mental health services that are centered around personal issues (Sudano & Miles, 2017). Previous literature around mental performance and mental health services has not distinguished between them, making it difficult to understand key stakeholders’ perceptions and knowledge of both mental performance and mental health services. Assistant coaches play an important role in NCAA athletic departments and spend substantial amounts of time connecting …

Smart Spine Tape: Active Wearable Posture Monitoring For Prevention Of Low Back Pain And Injury, Samuel J. Borda

Master's Theses

Back pain and injury are a global health issue and are a leading cause of work and activity absence. Prevention would not only save those affected from the burden of pain and discomfort, but would also save people from loss of over 290 million workdays annually and save the healthcare system billions of dollars in expenses per year. Successful research and development of a wearable technology capable of comprehensively monitoring spinal postures that are leading causes of back pain and injury can result in prevention of mild to severe back pain and injury for high-risk people. To accomplish this, the …

Machine Learning And Software Solutions For Data Quality Assessment In Cern’S Atlas Experiment, Cary Randazzo

Master's Theses

The Large Hadron Collider (LHC) is home to multiple particle physics experiments designed to verify the standard model and push our understanding of the universe to its limits. The ATLAS detector is one of the large general-purpose experiments that make use of the LHC and generates a significant amount of data as part of its regular operations. Prior to physics analysis, this data is cleaned through a data assessment process which involves significant operator resources. With the evolution of the field of machine learning and anomaly detection, there is great opportunity to upgrade the ATLAS Data Quality Monitoring Framework to …

Age-Based Comparison Of The Motivations, Self-Efficacy, And Quality Of Life In Bariatric Surgery Candidates, Sheena K. Bling

Master's Theses

Overweight and obesity is a worldwide epidemic that is negatively impacting individuals’ health and quality of life. Much research has been conducted regarding the effects of diet and exercise for weight loss, with current research providing evidence in favor of bariatric surgery for severely obese adults and children. The purpose of this project is to understand participants motivating factors, anticipated post-surgery success and anticipated changes in physical, social and mental health. The objectives were to describe participants’ motivations for pursuing bariatric surgery, describe participants level of confidence with postsurgical diet implementation, and compare participants anticipated post-surgery changes in quality of …

Evaluating Traditional And Novel Modalities Of Self-Monitoring In Females With Low-Literacy & Obesity: A Feasibility Study, Anita H. Kelleher

Master's Theses

This study aimed to determine the feasibility of three distinct self-monitoring modalities employed as part of a weight-loss intervention among Spanish- and Mixtec-speaking women with low-no literacy who were overweight or obese (body mass index, BMI> 25). Primary outcomes assessed include self-monitoring adherence, weight, body composition, and diet quality. Participants (n=18) were recruited from the Cal Poly Women and Infants Mobile Health Unit, and contacted if they had a BMI> 25 and did not attend school beyond elementary level (6th grade). Upon enrollment, participants were asked to attend a weekly meeting at which the lifestyle intervention was delivered by a …

No Justice, No Peace: An Examination Of The Protestor Experience, Naya Russell-Coprich

Master's Theses

More than 95% of the protests that took place in the summer of 2020 were deemed peaceful. However, many of these protests ended with violent encounters with police officers (Major Cities Chiefs Association, 2020). The purpose of this research was to explore the experience of protestors in America. This study also sought to identify, if at all, the disparities present when deciding to use excessive force against protestors. The sample for this study included students from the University of Northern Colorado, who were 18 years of age or older, and have attended a protest in their lifetime. The final sample …