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Purdue University General Institutional Description, Purdue University Office Of Research

University General Facility Boilerplate Descriptions

Overview of Purdue University mission, statistics, and key cross-campus infrastructure.

Friends Of The Library Newsletter, Summer/Fall 2026, Hillary Richardson

Fant Library News and Reports

No abstract provided.

Shaping Writers, Shaping Pedagogy: Elementary Teachers’ Writing Identities And Instructional Change Within Literacy Coaching Contexts, Elizabeth T. Besch

All Dissertations

Despite the central role of writing in literacy development, many elementary teachers report limited preparation in writing instruction and uncertainty in how they understood themselves as writers. Increasingly, literacy coaching has been positioned as a form of job-embedded professional learning that supports instructional change; however, less is known about how coaching contexts shape teachers’ identities as writers and how those identities relate to instructional practice.

This qualitative multiple-case study examined how elementary teachers’ writer identities were constructed and enacted within a literacy coaching context. The study addressed the following research questions: (1) How do literacy coaching contexts, as figured worlds, …

Student Motivation In Social Studies Classes At The Public Museum High School: A Dissertation, Benjamin Kruid

All Dissertations

Students tend to behave differently in different classroom settings. Many factors contribute to the change in behavior, including motivation. Research suggests a tendency for student motivation to decrease as students move from elementary to middle to high school. However, motivation in students is not uniform and is dependent on factors like the subject, and time of day, for example. This dissertation examines student motivation in social studies classes at a public high school in Michigan using Situated Expectancy-Value Theory (SEVT) as a framework for understanding motivation, and student impulsiveness as understood through the lens of Delay Discounting (DD). This research …

Summaries Of Arkansas Cotton Research 2025, Fred M. Bourland

Arkansas Agricultural Experiment Station Research Series

Planted cotton acreage in Arkansas decreased in 2025 to 520,000 acres compared to 650,000 planted acres in 2024. Arkansas producers harvested 515,000 acres, which was a decrease of 125,000 acres from the 640,000 acres harvested in 2024 (https://www.nass.usda.gov/Quick_Stats/Ag_Overview/stateOverview.php?state=Arkansas&year=2025). The 515,000 harvested acres ranked Arkansas third nationally, trailing only Texas and Georgia in harvested acres (https://esmis.nal.usda.gov/sites/default/release-files/795725/cropan26.pdf). The average cotton yield, as reported by the USDA, was 1,239 lb lint/ac, which ranked fourth nationally, behind California, Louisiana, and Arizona. Arkansas farmers produced an estimated 1.329 million bales, which is a decrease from 1.788 million bales produced in 2024. This production still ranks …

Computable Phenotypes For Research Using Real-World Data: Experiences From The Nih Pragmatic Trials Collaboratory, Andrea L Cheville, Miriam O Ezenwa, Andrew D Boyd, Juanita E Darby, Nadine S Matthie, P Michael Ho, Alice Pressman, Morgan Justice, Carol Reynolds Geary, Keturah R Faurot, Alex Fist, Karen Staman, Hulin Wu, Rachel L Richesson

Faculty, Staff and Student Publications

Objectives: Embedded pragmatic clinical trials (ePCTs) are conducted as part of routine clinical care and therefore use data collected from real-world data sources, such as electronic health record systems and administrative claims. A common approach for using these types of data across all phases of trial conduct is to create a computable phenotype (an explicitly defined data query data, including specified data types, data codes, and logical parameters) to capture patients with a clinical condition, exposure, symptom, characteristic, treatment, or outcome of interest.

Materials and methods: The Electronic Health Record (EHR) Core Working Group of the NIH Pragmatic Trials Collaboratory …

Day-To-Day Ionospheric Variability In The Midlatitudes, Danielle Markowski

All Dissertations

Have you ever been driving down the road around noon, turned on the radio to an AM station and got mostly static breaking up your news, or only pick up stations close to you? Have you ever been driving down the same road around midnight, turned on the radio to the same station, and heard the music come in clearly, with no static at all, or been able to pick up stations 100s of miles away? Well, this is all due to the region of the Earth’s upper atmosphere, known as the ionosphere. Most of Earth’s atmosphere is considered neutral; …

The Past, Present, And Future Of Climate Adaptation In A Widespread Lizard Species, Matthew R. Mcternan

All Dissertations

Climate, as a selective force, shapes patterns of biodiversity globally. However, how species adapt to climate remains a central question of biology. The need to understand climate adaptation is paramount, as global climate change threatens a large portion of global diversity. Climate can impose selection on life by either controlling rates of energy intake and expenditure through effects on body temperature and activity, or by exposing organisms to conditions beyond their physiological limits. Studies of climate adaptation have identified a wide-range of putatively adaptive phenotypic patterns, but genomic evidence is increasingly being used to investigate these patterns and better understand …

Exploring Public Perceptions Of Genetic Risk In Substance Use Disorders, Brooke A. Goodenow

All Dissertations

This dissertation examines genetic risk perception, with specific emphasis on substance use disorders (SUDs), through a collection of three manuscripts. The dissertation examines genetic risk perception for hereditary diseases in existing literature, describes a methodological framework for capturing genetic risk perception across social media discourse, and identifies themes and emotional tone associated with genetic risk perception for SUDs across two major social media platforms (X and Reddit).

Combined, these three manuscripts expand and support previous findings about genetic risk perception and its role in shaping health beliefs and associated behaviors. The dissertation findings reveal numerous similarities in genetic risk perception …

Efficient And Scalable Visual Computing For Nanoscale Imaging, Hao Wang

All Dissertations

Nanoscale analysis often relies on instrument-mediated scientific imaging methods to capture visual signals that are difficult to observe, interpret, or quantify through ordinary perception alone. These domains are often characterized by low signal quality, limited annotations, complex morphology, non-natural visual statistics, and strong dependence on physical acquisition processes. This dissertation focuses on efficient visual computing for nanoscale imaging, with an emphasis on the representation, reconstruction, and analysis of high-resolution scientific visual data. In our early work, we relied on rule-based algorithms and conventional machine learning methods for feature extraction. However, these approaches struggle to scale with the increasing complexity and …

Silviculture For Coastal Forest Resilience: Promoting Forest Regeneration And Managing Invasive Plant Species, Ryan Bohannon

All Dissertations

Coastal forests of the southern United States and the ecosystem services they provide are threatened by an intensifying and interacting suite of disturbances associated with global change. Silvicultural strategies such as enrichment planting, invasive plant management, and browse mitigation treatments can enhance the resilience and adaptive capacity of forests to these threats by promoting sustainable regeneration and recruitment dynamics. To improve our understanding of coastal forest disturbance regimes and their impacts on forest stand dynamics, I conducted a systematic literature review of maritime forest disturbance ecology and identified coastal storms, ungulate browsing pressure, and invasive plants as primary disturbances shaping …

Health In Her Hands: Indigenous-Led Women’S Health Organizations In Guatemala, Alexandra Diliberti

Theses & ETDs

Indigenous women in Guatemala face disproportionate rates of maternal mortality, malnutrition, and reproductive health disparities compared to non-indigenous women. These disparities persist, even after the signing of the 1996 Peace Accords formally committed the government to indigenous rights and improved healthcare. This thesis argues that this is the result of coloniality, neoliberal privatization, and the epistemological exclusion of Maya health knowledge from the official health system. The theoretical framework is based on coloniality of power and knowledge (Quijano 2000), abyssal thinking and ecology of knowledges (Santos 2014), coloniality of gender (Lugones 2008), structural violence (Farmer 1996), and decolonizing methodologies (Tuhiwai …

Engineering Materials Function With Reconfigurable Colloids, Laura Galeano Tirado

Theses

The function of a material is defined not only by its chemical composition, but also by the structural organization of its constituents across multiple length scales, from the architecture of individual building blocks to their collective arrangement. Developing strategies to access, engineer, and reconfigure that structure on demand represents a central opportunity in the design of adaptive materials. Here, we present a thermoresponsive polymer-colloid platform that enables high-precision tuning of colloidal structures using only thermal stimuli. Rather than adsorbing to the surface, our polymers diffuse inside organosilica colloids to reshape them from within, allowing continuous modulation of their size, shape, …

A Qualitative Case Study Of Leadership Development In A Graduate Medical Laboratory Science Program, Demetra Castillo

EVMS School of Health Professions Theses & Dissertations

Leadership development is increasingly recognized as an essential component of healthcare education, particularly as medical laboratory professionals assume expanded responsibilities involving collaboration, decision-making, systems thinking, and organizational leadership. Despite this need, limited research has explored how leadership develops within graduate medical laboratory science (MLS) programs. This qualitative case study examined leadership development through the lens of Experiential Learning Theory (ELT). Two research questions explored how the program fostered leadership development through students’ professional biographies, leadership questionnaires, final reflection papers, and leadership credos and how leadership reflections demonstrated growth over time. Secondary data from five student cases were analyzed using deductive …

'We Will Be Here': Modeling Hunting Community Narratives In Avanersuaq, Greenland, Talor Stone

Graduate Program in International Studies Theses & Dissertations

The Inughuit, a small Indigenous population in Northwest Greenland with a rich history of subsistence hunting in one of Earth’s harshest environments, have long been portrayed in Western media and academic literature as symbols of vulnerability and resilience, often depicted more as icons of climate change and a culture under threat than as actual people with hopes and aspirations. Indigenous voices are strikingly absent from these Western accounts.

As the Arctic gains prominence amid rapid growth in climate discourse, regional geopolitics, and tourism, the implications of these representations become increasingly significant. When Western crisis narratives dominate discourse and shape regulatory …

The Association Between Prenatal Nicotine Exposure And Postpartum Depression, Reem Ali Sharaf-Alddin

Health Services Research Dissertations

Postpartum Depression (PPD) is the most common mental health complication of childbirth with 17% of women globally and 13% in the US experience PPD. The pathophysiology of PPD is not yet fully understood, with psycho-social, biological, and environmental factors, interplaying together and predisposing to PPD. One key modifiable risk factor is prenatal exposure to nicotine (PEN) including Active Tobacco Smoking (ATS), Secondhand Smoking (SHS), and Electronic Nicotine Products (ENPs). Several studies investigated the association between prenatal ATS or SHS and PPD, however the findings were inconclusive. There is a lack of studies that assessed the overall PEN, and none of …

Visual Cues Attract Adult Tunga Penetrans (Siphonaptera: Tungidae), Ayako Hyuga, Paul Ouma, Lynne Elson, Kazuchiyo Miyamichi, Satoshi Kaneko, Kensuke Goto, Tullu Bukhari, Jürgen Krücken, Ulrike Fillinger

All Peer-Reviewed Publications

Tunga penetrans (Linnaeus, 1758) (Siphonaptera: Tungidae) is an ectoparasitic flea whose adult females cause tungiasis by embedding into the host’s skin. Environmental, social and financial challenges in tungiasis endemic areas have left this disease neglected and lacking locally available control measures. One possible approach for controlling T. penetrans targets its off-host stages; however, surveillance tools for adult fleas are still lacking. Moreover, host-seeking cues and behaviour of adult T. penetrans remain largely unknown. In this study, we show that visual cues are attractive to adult T. penetrans. Newly emerged T.penetrans responded to light stimuli across a broad spectrum, ranging from …

Machine Learning In Flow Cytometry For Acute Myeloid Leukemia Diagnosis: A Scoping Review, Katrina Jezzela M. Dela Pena Md, Mls (Ascp)

Other Specialties

Manuscript version:

Introduction: Flow cytometry is essential for the diagnosis of acute myeloid leukemia (AML), but conventional analysis is labor-intensive, operator-dependent, and increasingly complex. Machine learning (ML) may support automated analysis; however, its readiness for clinical implementation remains unclear. This scoping review mapped ML approaches applied to flow cytometry for AML-related diagnosis.

Methods: PubMed was searched for English-language primary studies applying artificial intelligence, ML, or deep learning to human flow cytometry data for AML diagnosis or classification. Eligible studies reported diagnostic performance metrics. Study characteristics, preprocessing, data representation, model architecture, validation strategy, performance metrics, interpretability, and implementation considerations were descriptively …

Recompression Improves Release Success In Pollack (Pollachius Pollachius): A Step Towards Assessing Post Release Mortality In A Recreational Fishery, T. Stamp, R. Mawer, R. Conlon, A. E. Hall, P. Davies, R. Nesbit, D. Uren, T. Morris, S. Sullivan, S. Thomas, B. D. Stewart, H. Rudd, K. Hyder, T. Osmond, S. Reynell, E. V. Sheehan

School of Biological and Marine Sciences

The recreational fishery for pollack (Pollachius pollachius) in the northeast Atlantic is impacted by the species' high sensitivity to barotrauma. When captured at depth and brought to the surface, gas expansion within the peritoneal cavity can cause a variety of injuries and hinder release. Via an experimental weighted cage, this study evaluated the efficacy of releasing Pollack at depth as a barotrauma mitigation strategy. We found that depth-release significantly increased the probability of released Pollack displaying an active escape response to 83%, compared to 56% for surface-released fish; however, increased capture depth and fish size negatively affected success. Camera observations …

Effects Of Concurrent Neuropathologies With Alzheimer Disease Neuropathologic Change On Cognitive Decline: Minimal Impact Of Vascular Brain Injury Compared With Other Combinations, Sarah M Yasuda, Charles Mock, Kathryn Gauthreaux, Kwun C G Chan, C Dirk Keene, Jessica E Culhane, Yen-Chi Chen, Walter Kukull

2020-Current year OA Pubs

We examined cognitive changes associated with several neuropathologic entities, alone and in combination. We studied 808 participants from the National Alzheimer's Coordinating Center to assess associations between neuropathologic diagnoses (from autopsy) and neuropsychologic test scores (trajectories over time for 5 domains: overall cognition, episodic memory, attention, language, executive function). Neuropathologies included: Alzheimer disease neuropathologic change (ADNC), Lewy body disease (LBD), vascular brain injury (VBI), and limbic-predominant age-related TDP43 encephalopathy neuropathologic change (LATE-NC). Using linear mixed-effects models, we examined trajectories of cognitive decline for ADNC alone compared to ADNC plus LBD, VBI, or LATE-NC. We also examined differences between observed trajectories …

Molecular Basis For The Regulation Of Membrane Proteins Through Preferential Lipid Solvation, Nathan Bernhardt, Tugba N Ozturk, Shan Zhang, Noah Schwartz, Rahul Chadda, Alejandro Gil-Ley, Janice L Robertson, José D Faraldo-Gómez

2020-Current year OA Pubs

The mechanism by which lipids regulate membrane proteins remains an open question. While many protein structures reveal associated lipids, neither binding nor regulatory mechanisms can be gleaned from frozen static snapshots, as these processes occur in the context of a dynamic membrane at equilibrium. In this study, we combine single-molecule experiments with computational analyses of lipid dynamics and lipid-solvation energetics to understand how changes in the lipid composition of the membrane influence the dimerization of the CLC-ec1 chloride/proton antiporter. We find this influence does not result from long-lived lipid binding at specific sites, but instead from an inherently dynamic effect …

Bees In The Trap: Leveraging Bumble Bee (Hymenoptera: Apidae: Bombus) Bycatch For Ecological And Genetic Insights, Tori L. Strausser

All Graduate Theses and Dissertations, Fall 2023 to Present

Managers rely on insect monitoring traps to detect insect pests that harm crops and protect food and other agricultural production. However, these traps also capture non-target insects, including bumble bees, raising concerns about whether repeated trapping could harm pollinator populations. This thesis explores whether bees caught as non-targets, also called bycatch, in routine pest monitoring traps can be used to better understand bumble bee populations, and whether traps pose risks to their long-term persistence. Using bumble bees collected from pest surveillance traps placed in crop fields across Utah, this research examined seasonal patterns in body size, timing of capture, and …

An Examination Of Lifetime Traumatic Brain Injury And Anti-Inflammatory Medication Use In The Risk For Alzheimer's Disease, Mikaela A. Drewel

All Graduate Theses and Dissertations, Fall 2023 to Present

Alzheimer’s disease (AD) is the leading cause of dementia in individuals aged 65 years and older. There are a number of lifestyle and genetic factors that affect one’s risk for AD including traumatic brain injury (TBI), and genes such as those for Apolipoprotein E (APOE) and brain-derived neurotrophic factor (BDNF). This study examined sex differences in how TBI history influences risk for AD, exploring genetic variants suspected to play a role in TBI recovery. Additionally, in following an inflammatory mechanism in TBI, the study also determined if nonsteroidal anti-inflammatory drug (NSAID) use reduced subsequent risk for AD. The study analyzed …

Impact Of Chronic Stress And Nutrition On Functional Connectivity And Neural Networks In Young Kichwa Children From The Ecuadorian Amazon Rainforest, Matthew L. Cook

All Graduate Theses and Dissertations, Fall 2023 to Present

Early childhood is a critical period for brain development. Positive and negative experiences during this time can have lasting effects on learning, health, and well-being. However, most research on children’s brain development has been conducted in wealthy, industrialized nations, leaving important gaps in our understanding of how children develop in other cultural and environmental contexts.

This study examined brain development in Indigenous Kichwa children living in two rural communities in the Ecuadorian Amazon Rainforest. The goal was to better understand how chronic stress and nutrition may influence a child’s developing brain during early childhood. Children participated in noninvasive brain assessments …

'Fast' And 'Slow' Water Handling Strategies Explain Pinyon Pine Decline And Juniper Expansion, M. Faraz Rehman

All Graduate Theses and Dissertations, Fall 2023 to Present

Across the western United States, pinyon and juniper woodlands are changing with pinyon pine trees dying back while juniper becoming more abundant. Previous studies suggested that pinyon may lose more water during drier periods. But water loss is only part of the story. Water inputs, or how plants absorb water, are also likely to be important, but rarely well understood. To better understand this, we measured how pinyon and juniper absorb water from different soil depths and how actively they lose water through their leaves. Measurements were made over two years at three sites that ranged from more dry to …

Visualizing The Phase Space Of Two Interacting Spherical Magnets Via Lagrangian Descriptors, Matthew Pontius

All Graduate Theses and Dissertations, Fall 2023 to Present

This thesis studies the motion of one spherical magnet sliding on another fixed spherical magnet. Although the setup is simple, the resulting motion can range from regular and predictable to chaotic as the energy increases. To understand this behavior, mathematical tools are used to visualize how all possible motions are organized in phase space. These methods reveal patterns such as stable regions, repeating motions, and chaotic trajectories. The results show how order and chaos coexist in this system and provide insight into how small changes in the initial conditions can lead to very different outcomes.

A Social-Ecological Systems Approach To Integrating Outdoor Recreation And Black Bear Management: A Michigan Case Study, Megan Dorothy Stone

All Graduate Theses and Dissertations, Fall 2023 to Present

Outdoor recreation sits at the intersection of social and ecological systems, representing one of the primary ways in which humans directly interact with their natural environment. As a result, outdoor recreation management must balance providing high-quality outdoor recreation opportunities while simultaneously protecting natural resources in protected areas. Balancing these concurrent management goals has become more challenging in recent years as participation in outdoor recreation increases. This can lead to numerous negative impacts on the environment, such as wildlife disturbance. In this study, I explore the challenges and opportunities for collaboration between managers of outdoor recreation and black bears in the …

Black Protection: Black Social Media Competency And Urban, Black Adolescents On Social Media, Taylor A. Williams

Dissertations

While urban, Black adolescents interact with racial identity content on social media, their identity is primarily shaped through offline experiences and later reflected or reinforced online. Through the concept of Black social media competency (B-SMC), this study examined the relationships between Black urban adolescents’ social media use, exposure to race-related content, and experiences navigating the digital environment. The study used a qualitative design, grounded in the phenomenological and ecological frameworks, with 21 adolescents recruited from two urban, Midwestern schools and programs to participate in semi-structured interviews, and data were analyzed using thematic analysis to identify patterns in how the participants …

The Relationship Between Depression And Cognitive Proficiency Index Across Biological Sex, Angela N. Ferdinardo

Dissertations

Depression is a widely studied mood disorder, and understanding its effect on cognitive functioning has become an important area of research. While research has examined relationships among depression, working memory, and cognitive deficits, limited research has explored depressive symptoms and cognitive proficiency across biological sex. Depression manifests similarly in men and women, though men are more likely to experience irritability, impulsivity, and anger, while women tend to experience sadness, stress, and sleep disturbances (Johns Hopkins Medicine, 2023). Women are also more likely to seek treatment and cope differently than men. This study examined the relationship between depression and cognitive proficiency …

Association Between Stress Mindset, Psychological Symptoms, And Psychosocial Risk In Liver Transplant Patients, Sarah Kay Brill

Dissertations

Psychosocial functioning is a central component of liver transplant evaluation, yet less is known about how cognitive factors, such as stress mindset, relate to transplant readiness. The present study examined the association between stress mindset and psychosocial risk, as well as its relationship with depressive symptoms, anxiety, and perceived stress among patients undergoing liver transplant evaluation. Patients included 62 adults completing standard pre-transplant assessment measures, including the Stress Mindset Measure–Specific (SMM-S), Stanford Integrated Psychosocial Assessment for Transplantation (SIPAT), Patient Health Questionnaire-9 (PHQ-9), Generalized Anxiety Disorder-7 (GAD-7), and Perceived Stress Scale (PSS). Hierarchical logistic regression analyses indicated that stress mindset was …