Digital Commons Network^™

Evolution Of Agricultural Emissions Calculations In Australia: Methodological And Calculator Refinements And Their Impact On Western Australia’S Agricultural Carbon Footprint, Christophe D'Abbadie

Climate Science Published Reports

Greenhouse gas (GHG) emissions accounting is fundamental to positioning Australian agricultural products competitively in global markets, enabling supply chain stakeholders to make informed decisions, and understanding the trade-offs between market demands, policy requirements, consumer expectations, and intergenerational responsibilities.

Recent methodological refinements to emissions methodologies have enhanced the accuracy of GHG accounting in Western Australian (WA) agriculture. The Department of Primary Industries and Regional Development (DPIRD) has collaborated in these improvements through collaborative research with universities and federal agencies and advocacy for Western Australia-specific emission factors.

Methodological refinements have improved the accuracy of WA agricultural emissions estimates by 6% overall, providing …

Ecology Of Eupatorium Altissimum Galls: Extrapolating Timing Of Oviposition Using Plant Growth Curves, Tomofumi Inoue, Dana Dudle, James Benedix

Annual Student Research Poster Session

This study aims to investigate the timing of oviposition by the gall fly Neolassioptera perfoliata on tall boneset (Eupatorium altissimum) populations throughout the DePauw University Nature Park. I initially measured the heights of 176 plants total in 5 different locations, out of which I randomly selected 12-17 plants per location to measure height on a weekly basis. When galls were spotted, their heights were recorded so that they could be compared to the plant heights to produce an estimate for when the egg was laid by the gall fly. I also collected galls from plants that were excluded in the …

K847a Mutation And Anionic Lipid-Presence Modify Opa1 Enzyme Kinetics And Function, J. Rafael Tolentino, Kate Walsh, Andrew D. Kehr

Annual Student Research Poster Session

Opa1 is a dynamin superfamily protein that is responsible for the fusion of the mitochondrial membrane. However, nobody knows the specific chemical mechanisms of how it interacts with lipids. Our research focuses on investigating how Opa1 interacts with lipids. In other words, we want to figure out which amino acids are crucial for Opa1's ability to bind with lipids. In hopes of understanding how Opa1 mutations affect neurodegenerative diseases, such as dominant optic atrophy.

The Loyalty Trap: How Loyalty Programs Hook Us With Deals, Hack Our Brains, And Hike Our Prices, Samuel A.A. Levine, Stephanie T. Nguyen

Center for Law and the Economy

This paper examines the devolution of loyalty programs — from simple coupon programs to major lines of business transforming the retail experience. This devolution is happening in three stages. In the first stage — the hook — companies entice consumers by promising generous upfront benefits if consumers enroll. In the second stage — the hack — companies use loyalty programs to extract deep insights into our spending habits and willingness to pay, effectively hacking our brains. And in the third stage — the hike — companies make these programs worse for consumers — raising fees, devaluing points, limiting redemption options, …

Getting To The Root Of The Problem: A Comparison Of Rhizome Extracts For The Control Of Cogongrass (Imperata Cylindrica), Mia Martin-Fuller, Elizabeth Esser, Ashley Schulz

Annual Student Research Poster Session

Cogongrass is a perennial grass that was introduced to the southeastern United States in 1912 and has since spread aggressively throughout the region. It is very resilient to disturbances as it can propagate through seed and rhizome, which makes it extremely difficult to control. Most efforts to control cogongrass populations have used synthetic herbicides, though burning and tilling have also been explored. A new method applies autotoxic leachates produced by the target plant to the plant for control. Although this method of control has been demonstrated in giant salvinia (Salvinia molesta), researchers have not yet identified the methods to control …

The Role Of Temporal Predictability In Sustained Attention, Miho Kato, Harun Yörük, Thomas S. Redick

Annual Student Research Poster Session

Attention requires sustaining focus on information and goals over time. Sustained attention performance is affected by time and temporal predictability. Specifically, previous research showed that performance in sustained attention tasks decreases when the focus of attention is required to be sustained over a longer period of time, and performance increases when the duration to sustain attention is predictable (known as temporal predictability). The current research examines the relationship between the duration of sustained attention and temporal predictability with two cognitive tasks. In the Sustained Attention to Cue Task (SACT), participants were required to sustain their focus of attention on a …

Impact Of Ionizable Lipid Variation On The Immunogenicity Of Lipid Nanoparticles, Chloe M. Krueger, Abbey L. Stokes, Shilpi Agrawl, Christopher E. Nelson

Annual Student Research Poster Session

Lipid nanoparticles (LNPs) are a leading nonviral delivery system for nucleic acid therapeutics due to their scalability and efficiency. However, certain formulations may trigger undesired immune responses. This study aimed to assess the inflammatory potential of LNPs formulated with different ionizable lipids using a murine macrophage reporter cell line (RAW-IRCs). RAW-IRCs express GFP upon successful mRNA delivery and mRFP1 upon activation of inflammatory pathways. A library of LNPs was synthesized via vortex mixing and characterized for hydrodynamic diameter, polydispersity index, and encapsulation efficiency. Treated RAW-IRCs were analyzed by flow cytometry to evaluate GFP and mRFP1 expression. Our results highlight seven …

3d Visualization For Teaching And Learning In Organic Chemistry: Orbital Hybridization And Bonding, Bao Le, Jeffrey Hansen

Annual Student Research Poster Session

This research focuses on developing techniques to create 3D visualizations for use in an electronic textbook. In this age of technology, traditional textbooks have become less appealing to the new generation compared to phones or tablets. Student learning can be enhanced by not only bringing the textbook online but also elevating the comprehensive experience for the students with 3D animations. We will show how animations of orbital hybridization and chemical bonding are made in Blender using Signed Distance Field (SDF) modeling. The orbitals’ models are mathematically combined allowing for smooth animation. We have used this technique to animate the transformation …

Longitudinal Monitoring Of Particle Counts In The Pfotzer Maximum (2017-2025), Scott Anderson, Jason Benyousky, Walae Dahmany, Tri Duong

Annual Student Research Poster Session

The Balloon Assisted Stratospheric Experiments (BASE) measures atmospheric muons using an array of instruments carried by weather balloons. We seek to spend extended time in the region of highest intensity, the Regener-Pfotzer Maximum (Pfotzer Maximum). The effects of the cosmic ray- induced ionization that comprises the Pfotzer Maximum are relatively unknown and may include cloud formation, precipitation, cyclogenesis, aerosol formation, atmospheric transparency, and more. With Geiger counters, we can measure the secondary particles produced by atmospheric cascades in order to better understand the Pfotzer Maximum and how it changes over time.

Birth Outcomes In The Hispanic Population In The United States: Trends, Variation, And Determinants (2011–2021), Yanchao Yang, Thinh Nguyen, Sota Fuji

Annual Student Research Poster Session

Infants born to mothers who self-identify as Hispanic account for a substantial and growing share of births in the United States, yet limited research has examined disparities in birth outcomes across Hispanic origin subgroups. This study aims to document trends and identify important factors associated with Cesarean section (C-section), low birthweight, and prematurity within the Hispanic population. We use data from the National Vital Statistics System (2011–2021), covering nearly all U.S. births. We compare outcomes across Hispanic, non-Hispanic White, and non-Hispanic Black mothers and further disaggregate by Hispanic origin (Mexican, Puerto Rican, Cuban, Central/South American, and Other/Unknown). We use logistic …

Low Vitamin D Diet Effects On Rna Expression In Kidney And Mammary Tissue Of Mus Musculus (Mice), Ibilola Fasogbon, Graham Read, Adriana Duraki, Larisa Nonn

Annual Student Research Poster Session

Vitamin D is a steroid hormone whose active form binds to Vitamin D Receptors (VDR), triggering cancer-associated pathways involved in inducing apoptosis, inhibiting inflammation, improving immunity, and regulating cell proliferation. Ongoing studies have shown a significant correlation between Vitamin D deficiency and the development of aggressive prostate cancer. African American men are more likely to experience vitamin D deficiency, develop prostate cancer at a high rate, and have a higher mortality rate than their non-Hispanic white counterparts. African American women are also disproportionately burdened with aggressive breast cancer and have higher rates of vitamin D deficiency. Understanding how a low …

Breaking Up Or Bound Together? Unraveling Us-China Economic Interdependence, Vinh Huynh, Guangjun Qu

Annual Student Research Poster Session

This study investigates the extent to which the U.S.-China trade war has altered bilateral trade flows and economic interdependence between the two largest economies in the world. The question at the heart of this research is whether the two countries have truly begun to “decouple” or whether they remain deeply interconnected despite political and economic tensions. Drawing on U.S. and Chinese trade data from multiple official sources, we examine both the scale and persistence of trade disruptions over time. Our analysis extends beyond the pre-pandemic years to include 2020 through 2024, allowing us to distinguish between the trade war’s temporary …

Preliminary Microbial Community Analysis Of Non-Native And Native Plants In The Depauw Nature Park Quarry Bottom, Madeleine Cruz, Dana Dudle

Annual Student Research Poster Session

The DePauw Nature Park Quarry Bottom is a former limestone quarry that was mined for decades and then lay dormant. Through the years, it has developed from being uninhabited to being populated by a diversity of organisms at every scale of life. All organisms in the Quarry Bottom must withstand the changing conditions of the quarry, including the proliferation of invasive plants that are well-adapted to stress. In particular, two invasive wetland grasses, Phragmites and Typha have observed competitive interactions, increased spatial distributions, and possible influence on native species. We have studied these species at our scale of life, but …

Analyzing The Evolving Digital Public Dialogue On Juneteenth, Ky Nguyen, Quan Nguyen, Khusi Singh, Annie Tran

Annual Student Research Poster Session

This research explores how public conversations surrounding Juneteenth have evolved over time by analyzing 10,000 tweets. Through annotation of sentiment, emotion, and topics, the project provides insight into how Juneteenth is celebrated, debated, and understood across diverse cultural and political contexts. The resulting dataset lays the groundwork for a machine learning model capable of identifying large-scale patterns in language, tone, and narrative.

The Heart Of The Crab: Analyzing The Vhe Emission From The Crab Pulsar, Adi Empie, Thao Nguyen, Avery Archer

Annual Student Research Poster Session

The Crab Nebula is one of the most studied astrophysical objects at very-high-energies (VHE) and is one of the brightest sources of VHE gamma-rays. The Crab Nebula is a pulsar wind nebula with the Crab pulsar providing the energy and particles to power the nebula. The gamma-ray emission from the nebula and pulsar are understood to come from relativistic particles but the processes that are responsible for accelerating these particles is not well understood. Studying the highest energy emission from the Crab Nebula can provide valuable insight into the underlying emission mechanisms at work. This project was intended to examine …

Light Stress And Leaf Characteristics In Prairie Fleabane In A Limestone Quarry, Guoqing Evelyn Tuohy

Annual Student Research Poster Session

DePauw’s nature park was an active limestone quarry for 60 years and has been going through primary succession since 1977. This harsh and disturbed environment can make it difficult for plants to survive. In this study, I aimed to investigate the Erigeron strigosus (Prairie Fleabane), a native plant commonly found in open, disturbed areas. I wanted to examine how the amount of light affected leaf traits in Erigeron strigosus because I had observed and hypothesized that in sunny areas, the leaf orientation changed, and the size of the leaves was smaller, and in shady areas, the leaves would be in …

Dimension Of Subalgebras Of Fomin-Kirillov Algebras, Taro Ikeda, Sirous Homayouni

Annual Student Research Poster Session

One of the central open problems concerning the Fomin-Kirillov algebras was whether their dimension is finite or infinite. This question was recently resolved in one research by C. Barligea, where it was shown that FK(n) is infinite-dimensional for all n ≥ 6. In our work, we investigate the dimension of a certain subalgebra of FK(6).

The Grape Cries Out!: Revising And Updating An Anthology Of Contemporary Wine Poetry, Sarah Cecil, David Alvarez, Elly Mccausland

Annual Student Research Poster Session

This project aimed to update an anthology of poetry about wine to make “winespeak” more accessible to the general public. While professional wine critics have a nuanced palette and experience with wine, casual readers of wine poetry can unlock the sensations of wine that may escape them otherwise. In total, over 140 contemporary poetry books were read, primarily focusing on a list of 56 contemporary poets. This project was advised by DePauw Professor of English David Alvarez, as well as Elly McCausland, a professor of English Literature at the University of Ghent and published author of books on Taylor Swift.

Human Transferrin Receptor Bispecific Trem2 Antibody Creation And Its Insightful Use In Alzheimer's Disease, Amelia Mclaren, June Javens-Wolfe

Annual Student Research Poster Session

Alzheimer’s disease (AD) is the leading cause of dementia, affecting an estimated 7.2 million seniors in the United States. AD can develop in the brain for twenty years or more before symptoms appear, such as memory loss, which could enable a diagnostic window for intervention. AD causes neurons to be damaged or destroyed due to the accumulation of amyloid-beta protein fragments and an abnormal form of tau protein. The protein Transmembrane Receptor Expressed by Myeloid Cells, TREM2, is essential in regulating the microglial response to amyloid-beta and tau accumulation in the AD brain. Microglia, the brain’s resident immune cell, has …

Entrepreneurship Over The Business Cycle, Ryan Rudderham, Miyu Aoki

Annual Student Research Poster Session

During economic recessions, individuals face a challenging decision: whether to seek traditional employment or start their own business. While recessions are a poor time for entrepreneurship due to reduced consumer spending and business productivity, these periods also feature high unemployment, which makes finding wage work difficult. This project developed a theoretical framework to study entrepreneurship over the business cycle by introducing labor market frictions, creating a tractable yet realistic structure for occupational choice. Traditional macroeconomic models struggle to capture entrepreneurial decision-making across business cycles. As such, this project looked at labor market frictions in building a theoretical framework. Over the …

Underrecognized Classics In Philosophy: Expanding The Depauw Philosophy Curriculum, Ian Smith, Jeremy Anderson, Rich Cameron, Erik Wielenberg, Jen Everett

Annual Student Research Poster Session

The Philosophy Department spent the summer developing a reading list for a future Phil. 200 course that would focus on classics not currently represented in the curriculum. One way we framed our goal was through the question, “what works should students have read by the time they reach their 300 and 400 level philosophy courses?” To this end, a work’s potential to broaden the scope of how I—as a current undergraduate philosophy major—understand my discipline, provided the department with an evaluative perspective to complement that of the faculty.

Navigating Permitting Reform: A Comparative U.S. Analysis With Illustrative Evidence From Indiana, Toan Minh Bui

Annual Student Research Poster Session

This study examines the effects of permitting reform on infrastructure performance in the United States, highlighting the trade-offs between regulatory efficiency and environmental oversight. Using a comparative multi-case design, we analyze twelve transportation, energy, and public facility projects across six states—two each representing high, moderate, and low reform intensities. The analysis combines quantitative performance indicators (cost overruns, schedule delays, environmental oversight scores) with qualitative assessments of legal frameworks, administrative capacity, and political context. Findings show that moderate-intensity reforms—those that streamline procedural steps while retaining environmental safeguards—deliver the most consistent balance of timely delivery, cost control, and regulatory integrity. High-intensity reforms …

Energetic Particle Detection In The Pfotzer Maximum Methods And Equipments, Scott Anderson, Jason Benyousky, Walae Dahmany, Tri Duong, Minh Mai

Annual Student Research Poster Session

The Balloon Assisted Stratospheric Experiments (BASE) measures atmospheric muons using an array of instruments carried by weather balloons. We seek to spend extended time in the region of highest intensity, the Regener-Pfotzer Maximum (Pfotzer Maximum) at 20 kilometers high. Using a set of Geiger Counters attached to a balloon, we can measure the secondary particles produced by atmospheric cascades at high altitudes. With risk of losing the balloon and the need to collect more data, we improved our payload with data-collecting components and experimented with a long-range data sender and receiver.

Energetic Particle Detection In The Pfotzer Maximum, Scott Anderson, Jason Benyousky, Walae Dahmany, Tri Dong, Minh Mai

Annual Student Research Poster Session

The Balloon Assisted Stratospheric Experiments (BASE) is an ongoing project aiming to measure atmospheric muons using equipment supported by high-altitude balloons. The Regener-Pfotzer Maximum (Pfotzer Maximum), which spans altitudes of roughly 15-25 km, is characterized by being the atmospheric region with the highest intensity of secondary particles from cosmic ray showers. The effects of the cosmic ray induced ionization that comprises the Pfotzer Maximum are relatively unknown and may include cloud formation, precipitation, cyclogenesis, aerosol formation, atmospheric transparency, and more. Our experiments seek to use low-cost solutions to better understand the behavior of cosmic ray-induced particles in a region of …

Adipose Tissue Estrogen Receptor-Alpha Overexpression Ameliorates High-Fat Diet–Induced Adipose Tissue Inflammation, Marion C. Hope, Christian A. Unger, M. Chase Kettering, Cassidy E. Socia, Ahmed K. Aladhami, Barton C. Rice, Darya S. Niamira, Ben P. Wiznitzer, Diego Altomare Ph.D., William E. Cotham, Reilly T. Enos

Faculty Publications

Context

We created an innovative mouse model that enables inducible overexpression of estrogen receptor-alpha (ERα), specifically in adipose tissue (Adipo-ERα↑). Objective

We aimed to investigate how elevated Adipo-ERα↑ influences the development of high-fat diet (HFD)-induced obesity in both male and female mice. Methods

Male and female Adipo-ERα↑ mice and littermate controls were fed a low-fat diet (LFD) or HFD for 13 weeks. Adipo-ERα↑ was induced at the initiation of dietary treatment. Body morphology and composition, hepatic lipid accumulation, glucose tolerance, fasting insulin concentrations, and adipose tissue mRNA profiling were assessed. Liquid chromatography–mass spectrometry was used to determine circulating and adipose …

Role Of Growth Factors In The Pathogenesis Of Systemic-Sclerosis-Associated Fibrosis, Fabian A. Mendoza, Sonsoles Piera-Velazquez, Sergio A. Jimenez

Jefferson Institute of Molecular Medicine Papers and Presentations

Systemic Sclerosis (SSc) is a systemic autoimmune disease of unknown etiology characterized by a severe fibroproliferative vasculopathy and frequently progressive cutaneous and internal organ fibrosis. The small-vessel vasculopathy and the tissue fibrotic alterations are responsible for the most serious clinical and pathological manifestations of the disease and for its high mortality. Despite the high severity and frequent mortality, there are currently no optimal therapeutic approaches for SSc, and its complex pathogenesis has not been fully elucidated. Numerous studies have suggested that growth factors and related regulatory macromolecules released from inflammatory and other cells present in the affected tissues play a …

2025-10-01 Caudill Connection, Morehead State University. Caudill College Of Arts, Humanities And Social Sciences.

Caudill Connection

Caudill Connection newsletter for October of 2025.

Propelling Aging-Related Initiatives In A Next-Gen Cooperative Extension System: Editors’ Introduction To The Jhse Special Issue On Aging, Erin L. Martinez, James S. Bates

Journal of Human Sciences and Extension

No abstract provided.

Full Issue, Volume 13, Number 2, James S. Bates, Donna J. Peterson Dr., Scott Cummings, Erin L. Martinez

Journal of Human Sciences and Extension

No abstract provided.

Aging In America: Implications For Family Resource Management, Becky Smith, Portia Johnson, Brandan Wheeler, D E Kiss, Ann A. Berry

Journal of Human Sciences and Extension

The Stanford Center on Longevity reports life expectancy has surged over the last 120 years. Unfortunately, living longer may not equate to living with a higher quality of life without considering the amount, type, and uses of all resources available to individuals and families as they age. Family Resource Management (FRM) is the science and art of how individuals and families make decisions to develop and allocate resources, including money, time, energy, space, material, and health assets, and networks of support to meet their goals. Living longer means making more decisions and developing and allocating more resources to enhance the …