Digital Commons Network^™

Assessing A Possible Effect Of Males' Pheromones In The Phonotaxis Of Female Acheta Domesticus, Addy Rodriguez Velasco

Honors Theses

Acoustic communication in crickets is crucial for reproduction. Females respond phonotactically to the male's call. Prior research evaluating the selectivity of phonotaxis in these females, has focused on females that have been isolated from males from day 1 after metamorphosis. However, assessing phonotaxis in females raised in the presence of males, remains to be done. This study aims to investigate the phonotactic response of female Acheta domesticus that were housed with males prior to testing.

Results indicate that on average, male-exposed females respond phonotactically to a wider range of calls that those females in the control group. These results rule …

Constructing And Confirming The Viability Of Nested Helmholtz Coils As An Education Model For Clinical Mri Systems, Yoel Kim

Honors Theses

Our goal was to construct a viable laboratory model utilizing oscillating compasses as a visual and manipulable analogue for magnetically resonant proton procession in a clinical magnetic resonance (MR) system for students without a strong background in nuclear physics. The constructed model -- which utilized concentric perpendicular helmholtz coils -- was tested for its ability to replicate the 3 central components in the clinical MR system: the main coils, the RF coils and the gradient coils. Experiments were conducted to demonstrate that each portion of the apparatus was successfully able to model its analogue in the clinical MR system, as …

Tracing Pharmaceuticals In Produce: Their Presence, Effects, And Consumer Perspectives, Savanna N. Crooks

Honors Theses

As prescription pharmaceuticals increasingly infiltrate agricultural systems, their unmonitored presence in produce products raises critical concerns about environmental contamination and human health risks. Using a mixed methods approach, combining a literature review and anonymous survey, the presence, fate, and transport of PCs in produce products, potential health effects, and consumer knowledge and perspectives were evaluated. It was found that the presence of PCs spanned across all classes of PCs and were present in locations among all types of environmental media, especially those used for agricultural production. Water contamination was shown as the primary source of transport that led to the …

Fantasy Orientation Of Media Consumption In Childhood And Creativity In Adulthood, Jordyn Martin

Honors Theses

The purpose of this research is to examine the relationship between the fantasy orientation of media consumption during childhood and creativity in adulthood. Creativity is a valuable skill to nurture in children because of how it influences creative problem-solving and supports well-being throughout their lives. Previous research has shown that fantasy play can be beneficial to the development of creativity, and as media-based activities become increasingly prevalent in modern play, it is important to investigate whether this has similar benefits to typical pretend play. It was hypothesized that higher fantasy orientation of media during childhood would predict higher levels of …

Visual Storytelling In Video Games, Michael P. Mclaughlin

Honors Theses

Every year, new top-hit video games are developed. Some are highly praised by critics, while others receive more mixed reviews. Among the factors that lead to these ratings is the plot/story elements. As more video games are published their focus on story elements has faded, overshadowed even, by newer graphics and jaw dropping mechanics. My Thesis and Project aim to show how games are a phenomenal medium that conveys complex stories with more engagement than most other mediums and resurface the importance of story development in games in the future.

The Weight Of Feeding The World: Stress In Kentucky Farmers, Natalie Tolle

Honors Theses

Agriculture work (farming, fishing, and forestry) is one of the most stressful jobs, with one of the highest suicide rates among all major job occupation groups. The stress that farmers face is often out of their control, stemming mainly from weather and financial concerns. This topic has been researched extensively in many countries around the world, however, research and literature are lacking in the United States, and specifically in the state of Kentucky. This study aimed to investigate the stress that Kentucky farmers face, how they cope with that stress, if it impacts their mental health, and how social support …

The Prillwitz Mammoth: Taxonomy, Sex, Age, & Delayed Skeletal Maturation Of A Geologically Young Mammoth, Anna Rybachek

Honors Theses

The Prillwitz mammoth, a nearly complete mammoth skeleton found in Southwest Michigan in 1962, is one of the geologically youngest mammoths from North America (AMS C-14 date: 11,300 ± 100 BP). Bones are well preserved; some long bones show post-mortem flaking, scratches, or grooves of unknown origin. All long-bone epiphyses remain unfused except the distal humerus, suggesting it was < 28 years old at death. In contrast, the skull and mandible preserve M3s and m3s, respectively, that are in mid-wear, indicating an Asian Elephant Year dental age of ~45-50 years. Long bone size and inferred shoulder height are consistent with the size of a large woolly mammoth (Mammuthus primigenius) or small to mid-sized Columbian mammoth (Mammuthus columbi), but dental evidence is most consistent with M. columbi.

Pelvic dimensions suggest it is a male. The ≥ 17-year mismatch between age inferred from tooth progression and wear (~45 Asian Elephant Years) and age inferred from epiphyseal fusion (< ~28 Asian EY if male) may indicate either substantially accelerated dental progression or delayed skeletal maturation for this mammoth; we deem the latter more likely. Based on modern analogs, delayed maturation could have been due to severe malnutrition, hormonal imbalance, illness, or genetic factors. Given the geologically young age of the Prillwitz mammoth (likely near the time of mammoth extinction), we speculate that delayed skeletal maturation may have been attributed to environmental stressors near the end of the Pleistocene. Further work is warranted on very late mammoths.

Immersive Mixed-Reality Anatomy Lab, Cassidy Norkett

Honors Theses

The Mixed Reality Heart Anatomy Lesson was created to address the WMU Homer Stryker M.D. School of Medicine’s need for an interactive and dynamic laboratory lesson. The application allows for a more efficient way for medical students to learn and comprehend the material. The design and development of a mixed reality application running on smart glasses provides students with a situation aware, fully engaged, and immersive learning experience. The Apple Vision Pro device allows medical students to complete their labs by merging physiology and anatomy concepts through 3D models, object detection, self-assessments, and an artificial intelligence chatbot. There can be …

Sweet Lies: Influence Of Food Marketing On Childrens’ Health And The Need For Reform, Mollie M. Warrington

Honors Theses

Markedly, there is heavy marketing of unhealthy food to children. This has become a significant public health concern because of escalating rates of child obesity, which have long-term consequences for physical health and severe mental health repercussions, such as body image concerns and low self-esteem. This thesis explores how food marketing strategies, historically rooted in television ads and evolving through digital platforms, are linked to children's dietary choices and broader public health implications. It analyzes various manipulative tactics, such as digital advertising, influencer endorsement, and gamification, showing how companies take advantage of the cognitive vulnerabilities of children to propagate unhealthy …

Predicting Human Steering From Optic Flow Using Deep Convolutional Neural Networks, Katie E. Bernard

Honors Theses

Human driving is a complex visuomotor task and the specific visual clues that guide it remain under investigation. While prior research has emphasized gaze-based strategies such as the Tangent Point and Future Path hypotheses, recent evidence highlights the potential role of optic flow, the visual motion pattern perceived during self-movement, as critical to steering ability. This thesis explores whether raw optic flow alone can support accurate predictions of human steering behavior. We trained a convolutional neural network to map optic flow vector fields to steering angles in a virtual reality driving simulation. The dataset, collected by Giguere et al., included …

Tracing The Lines In Comics And Life: Genealogies And My Place Within Them, Audrey M. Loo

Honors Theses

My thesis is a hybrid English Lit/Creative Writing project on comics. The English Lit half is an Artist’s Statement comprised of scholarly research and both analytical and personal writing, and this work will necessarily inform and be informed by the Creative Writing half, in which I create my own comics.

Characterization Of A Highly Arsenic-Resistant Microbe, Eleanor E. Windholz

Honors Theses

Heavy metal pollution in our terrestrial and aquatic ecosystems is a major global concern, as chronic exposure to heavy metals such as arsenic and chromium has dire effects on mammalian health. In these polluted, arsenic-rich environments, microorganisms resistant to heavy metals have been isolated. The microbe isolated in this paper was resistant to As(V) up to 1100 mM, which is significantly higher than most published strains, and resistant to Cr(VI) at concentrations up to 5 mM. The microbe was tentatively identified as Micrococcus luteus, but its high arsenic resistance suggests it may be a novel strain. The ability of the …

Mortal Rivers: A Case Study Analysis Of Indigenous Water Sovereignty Within The Penobscot And Lakota Nations, 19th Century To Present, Moya S. Stringer

Honors Theses

Indigenous water sovereignty has long been a contested problem within the continent of Turtle Island. In 2016, the Lakota Nation globalized the message Water is Life through their movement against the Dakota Access Pipeline, an oil infrastructure that would put one of the continent’s largest watersheds at risk. The revolutionary fervor of the Water is Life movement travelled all the way to the Penobscot Nation in the Dawnland, a place we now call Maine. In an adjacent vein to the Lakota, the Penobscot people have spent the 21st century addressing damming projects and rampant pollution from the 1900s in a …

Wave Reflections In A Biophysically Detailed Model Of Cardiac Tissue, Grace Moberg

Honors Theses

Regular heart rhythms are governed by the coordinated spread of action potentials through cardiac tissue. The interaction of an action potential with a tissue heterogeneity may lead to a reflection, where both a retrograde and an anterograde wave propagate off of the initial impulse. Reflections have been experimentally linked to cardiac arrhythmias, but their mechanisms of generation are not well-understood. Mathematically, reflections in phenomenological models of cardiac tissue have been linked to an unstable periodic orbit. These models typically sacrifice detail about the variety of ionic currents and processes involved in action potential propagation in favor of mathematical simplicity. Biophysically …

From Living With The Land To Vacation Timeshares: The Impact Of Outdoor Recreation On The United States’S Recognition Of Shoshone, Timpanogos, And Havasupai Ancestral Homelands, Harry T. Robison

Honors Theses

The romantic view of the Western United States from the perspective of a US resident is fueled by the thought of adventure and expansion. The phenomena of the "Wild West," frontier ideology, and manifest destiny have kindled a love of being outside and pursuing new and "unexplored" territory. Long before those ideologies came into play, people already inhabited these landscapes. As colonists moved West, many of those inhabitants were forcefully moved onto reservations. Those people include the Shoshone people of Wyoming, the Timpanogos people of Utah, and the Havasupai people of Arizona. Alongside this history of displacement, the United States …

Identifying The Spread Of Invasive Jumping Worms Across Maine’S Forests Using Soil Edna, Rebecca Wanger

Honors Theses

Jumping worms of the Megascolecidae family are invasive earthworms from East Asia that have been spreading across the United States since the late 1800s (Chang et al., 2021). Recently, the earthworms have gained more attention for their expansion into northeastern states, as they are believed to have negative impacts on the soil biogeochemistry, flora, and fauna of these forest ecosystems that have had no native earthworms given the recent nature of the Last Glacial Maximum (~11,000 yrs ago; Bohlen et al. 2004; McCay et al. 2020). The earthworms are distinguished by their thrashing behaviors, milky-white smooth clitellum, and evenly spaced …

Effects Of Direct And Indirect Predator Cue Intensity On Foraging Decisions In A Deer Mouse, Peromyscus, Nicholas G. Levinson

Honors Theses

Ecologists developed optimal foraging theory as a framework to understand how an animal may spend minimal time to maximize resource intake. A giving-up density (GUD) is a metric of the density of remaining food in a food patch at which an animal decides foraging is no longer economical. This study aims to test how the intensity of direct and indirect predator cues alter foraging patterns of deer mice. To measure GUD, I used depletable food patches deployed in the “upper woods” on the periphery of Colby College. To simulate direct predator cues, 1 mL of fox urine was applied on …

Mucking Up Public Health: A Geospatial Analysis Of Agricultural Sludge Application And Cancer Prevalence In Maine, Sarah A. Bassett

Honors Theses

This study investigates the impact of per- and polyfluoroalkyl substances (PFAS) on cancer prevalence throughout Maine. The main contribution of this project is the database constructed to examine cancer rates at a novel aggregation area: watersheds. By using a watershed as the aggregation area, this study gains insight into the threat that spreading sludge as fertilizer on agricultural fields poses to human health through groundwater pathways. Using geospatial analysis and an ordinary least squares regression model, this study estimates the effect of the presence of PFAS in a watershed from 2017 to 2021, in addition to estimating the impact of …

How Does Cocaine Exposure Affect Early Gene Expression Changes In The Prefrontal Cortex (Pfc) And Striatum?, Saathvika Diviti

Honors Theses

Cocaine use disorder (CUD) remains a significant public health concern, yet the molecular mechanisms underlying individual susceptibility are poorly understood. This study investigates early transcriptional responses to acute cocaine exposure in two key brain regions implicated in addiction, the prefrontal cortex (PFC) and striatum, using genetically diverse Diversity Outbred (DO) mice. Paired tissue samples were collected following a standardized sensitization protocol and analyzed via bulk RNA sequencing. Differential expression analysis revealed 37 significantly differentially expressed genes in the striatum. These genes overlapped with gene sets associated with substance use, neurodevelopmental disorders, and immune signaling, implicating shared pathways in central nervous …

Once Upon Another Time: Retelling Fairy Tales & Legends With Inclusive Identities For Modern Young Adult Audiences, Hailey Drapcho

Honors Theses

This thesis explores how modern young adult (YA) fairy tale retellings can act as interventionist works as part of the mythopoeic YA fantasy sub-genre, where they enfold traditionally excluded identities into the archetypal role of the fairy tale female protagonist who is expected to embody an idealized form of girlhood. Fairy tales have a profound impact on self-image and how individuals create expectations of their role in the world. By fracturing the archetypes maintaining restrictive and exclusionary expectations, mythopoeic YA fairy tale retellings affirm the young adult girl to embrace her own individual identity and determine her role in the …

Predictors Of Facultative Siblicide In Black-Legged Kittiwake (Rissa Tridactyla) Chicks, Maria Pisciotta

Honors Theses

In Black-legged kittiwakes (Rissa tridactyla), a seabird species, competition between siblings can arise when more than one chick is present in a nest. The first-hatched chick, known as the “A” chick, frequently establishes dominance over the second-hatched chick, known as the “B” chick. Many different factors can drive the presence and intensity of this competition, including the size discrepancies between chicks, and their physiological state. A likely factor is resource limitation, seen in many instances of sibling competition to be a prominent component because limited food must be allocated between both chicks by parents. In some cases, competition can escalate …

The Aussie Oddballs: Identifying The Existence Of Censer And Trample Burr Dispersal In Australian Bush Tomatoes, Abigail Motter

Honors Theses

Australian bush tomatoes in northern Western Australia likely have seed dispersal mechanisms that depend on processes outside of frugivory, which is unusual for this genus. Solanum tudununggae seeds are wind dispersed by the censer mechanism, meaning that seeds fall from holes in the top of the fruit when the branches move. In another species, piles of abscised and burr-like fruits have been found strewn around the bases of S. ossicruentum, possibly due to the extinction of animals that may have been a means of dispersal via epizoochory. In this study, we attempt to provide support for the theorized dispersal …

The Alien Language: Game The Developmental Trajectory Of Auditory And Visual Statistical Learning, Gwen Radecki

Honors Theses

Statistical learning (SL) extends across multiple stimulus domains and modalities, including vision, audition, and touch. However, it remains to be seen whether SL is supported by a modality-general or modality-specific mechanism(s). Prior work examined this by varying the rate of presentation across modalities, finding evidence of modality-specific constraints on learning (Emberson, Conway & Christiansen, 2011). In a prior experiment, I extended this work by testing the effect of presentation rate in standardized audio and visual SL tasks. The results of this project provided evidence against modality constraints to SL, suggesting instead that the mechanism is modality-general in nature. However, SL’s …

The Effects Of Conspecific Stress Cues Caused By Harassment In The Mummichog (Fundulus Heteroclitus), Megan Quinn

Honors Theses

Many organisms, especially fish, participate in herding or schooling behaviors for various benefits such as increased survival rates, better hydrodynamic efficiency, or for hunting tactics. Due to being in a tightly packed group, disturbances or predation in their environment can result in group behavioral changes. Fish release hormones into surrounding water through excretions like urine because of a disturbance which may affect their surrounding conspecifics. In this experiment a lone mummichog (Fundulus heteroclitus) was exposed to a water sample from other conspecifics who were stressed through harassment. Physical behavioral changes such as changes in swimming activity, respiration rates and position …

The Effect Of Dha On Myo-Inositol Levels In Lymphoblasts Derived From Patients With Bipolar Disorder, Katherine Pierre

Honors Theses

Bipolar disorder is a mood disorder that is characterized by recurring episodes of mania and depression. Bipolar I disorder is accompanied by severe episodes of mania and depression, while bipolar II disorder is characterized by a milder form of mania. It has been hypothesized that currently approved treatments for this disorder, lithium and valproic acid, exert their therapeutic effect by decreasing myo-inositol levels intracellularly. However, these treatments may lead to undesired side effects, creating a need for safer treatments. Omega-3 fatty acids are polyunsaturated fats that have been shown to be effective in relieving symptoms of bipolar disorder.

To investigate …

The Immune System Under Pressure: Understanding The Impact Of Stress On Immune Function And Health, Kaeshwinie Murugan

Honors Theses

Stress has a profound impact on the immune health of college students, exacerbated by challenges such as academic pressures, sleep deprivation, and inadequate coping strategies. This study investigates the relationship between stress and immune function among students at Western Michigan University, utilizing survey data and existing literature to explore mechanisms of stress-induced immune suppression and identify effective interventions. The survey, conducted with 100 participants, revealed that over 70% experienced stress that adversely affected their immune systems, with 60% reporting insufficient sleep and 20% sleeping less than five hours per night.

The survey further highlighted students' reliance on specific coping mechanisms, …

Natural Medicine Use In Costa Rica, Elizabeth Krol

Honors Theses

This study explores the role of natural medicine in Costa Rican culture, while focusing on its historical, cultural, and clinical significance. With a literature review, ethnobotanical research, and a study abroad experience, this paper highlights the integration of natural, herbal medicine into modern healthcare. Costa Rica’s rich biodiversity, with its varied microclimates and abundant medicinal plants, forms a strong foundation for traditional herbal medicine. Indigenous groups such as the BriBri and Cabécar contributed significantly to this legacy, which has evolved through interactions with European and Afro-Caribbean populations.

Research emphasizes the cultural importance of herbal medicine within the “Pura Vida” lifestyle, …

Perceptions And Attitudes Of Western Michigan University Students On Antibiotic Medications, Emily Boask

Honors Theses

On a global scale, antibiotic resistance is a threat to public health. The causes of antibiotic resistance are multifaceted, including healthcare providers overprescribing antibiotics, antibiotic overuse in farming and food production, and antibiotic misuse or malpractices. The public recognizes antibiotic resistance as a significant problem but there are serious knowledge gaps regarding antibiotic resistance and antibiotic stewardship.

University students are a particularly important subpopulation of the public to understand appropriate antibiotic use because many of these individuals are navigating their health concerns on their own for the first time. Many individuals believe that antibiotics can improve cold symptoms, upper respiratory …

Aerodynamic Noise Reduction Of Wind Turbine Blades, Steven Davenport

Honors Theses

This project is presented to meet Western Michigan University’s College of Engineering and Applied Sciences Senior Design requirements. With wind turbines becoming increasingly popular as a form of energy generation, the need to reduce the aerodynamic noise is needed. Most commercial wind farms use turbines with a NACA 0012 airfoil. Thus, that is the only profile shape considered in this research. Seven modifications were made to a NACA 0012 airfoil to reduce aerodynamic noise. The airfoils were designed in SolidWorks and 3D printed at the WMU College of Aviation. The airfoils were simulated in Ansys Fluent and experimentally tested in …

To Read Or Not To Read: How Book Censorship Affects Students And Undermines Different Worldviews, Jordyn L. Bailey

Honors Theses

The past five years have seen an unprecedented growth in book challenges across the nation. The American Library Association announced in March 2024 that 2023 saw a ninety-two percent increase in challenged titles, making it a record year for book bans and challenges (American Library Association 2024). States are seeing increased government inference into these issues. Namely, Florida remains a leader in book challenges with over forty percent of all book bans in the 2022-2023 school year (Meehan 2023). This project examines the effect of book challenges and bans on adolescent readers, with an emphasis on how frequently challenged books, …