Digital Commons Network^™

Synergistic Effects Of Salinization And Artificial Root Exudates On Soil Phosphatase Activity In Coastal Soil, Nicolina Lentine, Sarah E. Krisak, Dirk W. Vanderklein, Matthew S. Schuler, Nina M. Goodey

Department of Biology Faculty Scholarship and Creative Works

Coastal soil salinization from rising seawater levels has adverse impacts on soil function, seed germination, and plant growth. Root exudates play a key role in supporting microbial activity, nutrient cycling, and plant health, yet little is known about the combined effects of salinization and the addition of artificial root exudates (AREs) on soils. We investigated the impacts of sodium chloride (NaCl) and AREs, alone and in combination, on soil microbial function and the growth and survival of Chamaecyparis thyoides saplings. In a three-by-three fully factorial matrix, the combined NaCl and AREs treatment increased soil phosphatase activity more than the additive …

Captive Model Test For Hydrodynamic Derivatives Of Ship Maneuvering In Regular Head Waves, Pin-Yuan Huang, Zih-Yao Lin, Tsung-Yueh Lin, Fu-En Lee, Yan-Wei Lai

Journal of Marine Science and Technology–Taiwan

The motion of ship in wave can be discussed in seakeeping and maneuvering. In model tests, the former is found by the motion response of waves while the latter requires captive model test to acquire hydrodynamic derivatives. The hydrodynamic derivatives in waves are discovered to be different from those in calm water. To understand better the behavior of maneuverability in waves, maneuvering tests in a wide range of waves are performed in this study. This study presents an experimental investigation into the maneuvering behavior of a container ship in regular waves, covering a wide range of wavelengths from half to …

Grant-O-Thon: A Designathon-Informed Grant Writing Program To Enhance Research Grant Writing Skills In Low- And Middle-Income Countries, Yusha Tao, Gifty Marley, Lauren Fidelak, Bin Yu, Yusuf Babatunde, Anita N. Walker, Anthony A. Attama, Andrea L. Conroy, Esther K. Afolabi, Dimitrios N. Vatakis, Iheanyi Omezuruike Okonko, Shyngle K. Balogun, Hongyun Fu, Xin Peng, Ijeoma M. Ifeorah, Patience Kukundakwe, Alexandra Cossio, Ifeoma M. Obionu, Ángela Patricia Beltrán López, Matthew Idowu Olatubi, Ucheoma C. Nwaozuru, Yuanyi Chen, Huachun Zou, Eneyi E. Kpokiri, Daniil Wu, Oliver Ezechi, Juliet Iwelunmor, Meredith Labarda, Jason J. Ong, Weiming Tang, Joseph D. Tucker

Department of Pediatrics Faculty Publications

Problem

Early career researchers in low- and middle-income countries (LMICs) face substantial barriers when writing research grants and have limited writing support. A designathon approach was applied to organize a grant writing workshop (grant-o-thon) tailored for early-career LMIC researchers. This study describes the planning, implementation, and participant-reported outcomes of the grant-o-thon as a participatory training approach.

Approach

Grant-o-thons were organized in 2023, 2024, and 2025. Consistent with the designathon model, the grant-o-thon was structured in three stages: preparation using co-creation with end-users, intensive collaborative teamwork supported by mentor feedback and weekly writing deliverables, and structured follow-up. Each grant-o-thon consisted of …

Mitigating Data Privacy Risks In Political Micro-Targeting Through Gdpr-Compliant Federated Learning: Lessons From The Cambridge Analytica Controversy, Jingfan (Serena) Xiao

Marquette Intellectual Property & Innovation Law Review

Political micro-targeting employs granular data analytics to deliver hyper- personalized political messaging, raising fundamental tensions between electoral strategy, data privacy, and democratic accountability. The Facebook- Cambridge Analytica scandal exposed significant gaps in pre-GDPR data protection laws, highlighting the risks of unchecked algorithmic profiling in shaping voter behavior. However, as micro-targeting evolves under more sophisticated AI-driven systems, a pressing question emerges: should AI- generated political messaging qualify for First Amendment protection? This Article introduces the concept of speech certainty, arguing that speech must be intentional and cognitively understood by the speaker at the moment of articulation to warrant constitutional protection. Under …

Engage & Empower Vol. 2, Elhanan Marvit

Open Touro Created

2026

Engage & Empower, Volume 2 is the second installment in the “Engage & Empower” OER series by Elhanan Marvit LCSW. It serves as the logical next step following Volume 1 (Spring 2025). While the first volume introduced foundational concepts in social work practice, ethics, and generalist skills This volume guides students and readers deeper into the applied, interpersonal, and reflective dimensions of becoming a competent practitioner.

Students begin their reading journey as they strengthen their understanding of professional competence. They achieve this by learning how to navigate field placements, engage in supervision, manage boundaries, and integrate feedback. The text …

Optimizing Efficiency In Joint Injections In An Outpatient Orthopedic Oncology Clinic Using Lean Six Sigma, William Alexander Byrd

Doctor of Nursing Practice (DNP) Scholarly Projects - Archive

Prolonged in-room wait time in an outpatient orthopedic oncology clinic was identified as an important driver of dissatisfaction and operational inefficiency. Baseline in-room times in this setting were reported as M=96.2 minutes for patients receiving injections and M=92.9 minutes for those not receiving injections. This quality improvement project used Lean Six Sigma (LSS) DMAIC (Define, Measure, Analyze, Improve, Control) framework to streamline clinic workflow for the joint injection process. Over an eight-week period, four key interventions were introduced: a standardized order set for medications, pre-bundled supplies and portable supply toolbox, telephone pre-consenting of patients, and optimized scheduling of …

Advancing Menstrual Health And Hygiene In Rural Kenya: A Guideline Based Approach, Tessia R. Winnfield

Doctor of Nursing Practice (DNP) Scholarly Projects - Archive

Objective: To develop an evidence-based clinical practice guideline for menstrual health management addressing menstrual education, teacher training, menstrual school absenteeism, male student engagement, pain management, and provision of menstrual kits with product options.

Design: This evidence-based practice guideline development project used the Agency of Healthcare Research and Quality (AHRQ) Framework and the Johns Hopkins Nursing Evidence-Based Practice Model (JHNEBP). I conducted a systematic literature review and a critical appraisal to identify best practices for menstrual hygiene interventions in rural communities.

Setting: The guideline development occurred within an academic Doctor of Nursing Practice program focused on rural communities.

Participants: Seven stakeholders …

Histopathology And Applications Of Event-Based Cameras, Jace Sung, Kelly Lao, Quinton Qu, Adithya Pediredla

Wetterhahn Science Symposium Posters

Capturing and analyzing visual phenomena at their natural time scale is critical in both science and engineering. For instance, in industrial manufacturing, high-speed capture of defects and crack propagation ensures quality control. In sports, capturing high-impact collisions in football or rugby helps in better understanding injury mechanisms and developing more effective prevention strategies. In autonomous robotics, drones, and cars, high-speed cameras enable split-second decisions, even during fast maneuvers. However, high-speed cameras are expensive, costing upwards of $100,000, and are bulky, limiting their widespread adoption. Recently, event cameras have emerged as an affordable, small-form-factor alternative, but they only capture binary temporal …

Exploring Mesoproterozoic Marine Redox States In A Young Banded Iron Formation From The Needle Mountains, Jaya Sharma, Brenhin Keller

Wetterhahn Science Symposium Posters

Banded iron formations (BIF), as redox-dependent chemical sedimentary rocks, have served as proxies for marine and atmospheric oxygen and iron conditions throughout Earth history. While abundant in the Archean and early Proterozoic, the widespread deposition of BIFs declined following the Great Oxidation Event, as oxygenated surface waters prevented the accumulation of ferrous iron. However, the Needle Mountains, located in southwestern Colorado, houses an anomalously young BIFs deposited between 1.786±10 - 1.801±6 Ga given existing geochronology. Here, we use rare earth element (REE) systematics, bulk chemistry, and petrographic analysis to determine the depositional conditions under which this BIF was formed. We …

Probing Feni Alloys With Atomic Precision, Scipio Han, Kaushik Rajkumar Jayaprabha, Xin Qi

Wetterhahn Science Symposium Posters

We compared EAM and MEAM atomic potentials for modeling FeNi (tetrataenite), a rare 50/50 alloy found in meteorites. Picking 4 potentials, we calculated minimum lattice constants and order-disorder transition temperatures. MEAM potentials accurately predicted the experimental transition temperature, confirming that MEAM better captures FeNi's directional bonding.

Risky Decision-Making Under Uncertainty, Suyoung Yoo, Jae Hyung Woo

Wetterhahn Science Symposium Posters

This research project aims to discover how a person’s brain continuously learns about its changing environment and how those memories dynamically alter their subsequent willingness to take risks. By testing 73 participants on a two-stage computer module, the study evaluates whether humans evaluate risk absolutely or relatively to their historical surroundings. In Stage 1, participants use reinforcement learning to track a hidden, shifting "lucky room" context. In contrast, in Stage 2, they face explicit two-option gamble cards in which they must weigh different point amounts and win percentages. Computational maximum likelihood estimation proved that a Subjective Utility (SU) model, which …

Measuring The Impact Of 3d Printers On The Health Of Youth, Alexis Kostin, Olla Obeid, Oz Trost

Wetterhahn Science Symposium Posters

3D printers are used more widely than ever before; they can be found in factories, hospitals, and even schools. However, the health effects of the VOCs and UFPs that these machines emit have yet to be fully understood. In collaboration with the University of Nevada, Las Vegas, this study utilizes an Air Gradient One sensor at the Diamond Lab to monitor VOC and UFP emissions before, during, and after 3D printing sessions. By comparing these levels to EPA and CDC safety standards, we aim to quantify the respiratory risks posed to youth.

Carbon Storage In Headwaters Can Respond Rapidly To Climate Change, Maddie Benello, Carl Renshaw, Joshua Landis

Wetterhahn Science Symposium Posters

Headwater streams play a critical role in the global carbon cycle, serving as significant sites of carbon storage. While there have been recent efforts to quantify carbon storage in headwater streams in the western United States, there remains limited understanding of both the volume and timescale of carbon storage in northeastern forests which often have extensive logging and agricultural histories. Here, we quantify the carbon stock, residence time, and flux of a zero-to-first order headwater stream in Charles Downer State Forest (DF), VT using novel fallout radionuclide (FRN) chronometry. We find DF headwaters have a carbon stock of 66.2 Mg …

Cell Surface Expansion And Tension Regulation: How Cellular Forces Shape Embryonic Development, Samantha A. Pressman, Sophia M. Micale, Bing He

Wetterhahn Science Symposium Posters

Congenital birth deformities often arise during epithelial morphogenesis, displaying the need to understand the mechanisms underlying this process. Cell shape changes that mediate morphogenesis often require cell surface expansion to accommodate shifts in 3D tissue geometry. Our lab has identified Four Wheel Drive (Fwd), a Golgi-localized phosphatidylinositol 4-kinase (PI4K) IIIβ ortholog, as a regulator for cell surface expansion during Drosophila ventral furrow formation, a well-characterized model for epithelial folding. We hypothesize that Fwd and Rab11, a regulator of exocytosis and endocytic recycling, coordinate the trans-Golgi network and recycling endosomes to promote vesicle trafficking. Using live imaging of fluorescently tagged Fwd …

Magnetic Anisotropy Engineering In Rare-Earth-Free Iron-Based Magnetic Materials, Pramanand Joshi

Physics Dissertations - Archive

The development of high-performance, rare-earth-free hard magnetic materials is critical for next-generation energy, information, and spin-based technologies. This dissertation investigates structure-property relationships in iron-based magnetic systems, including iron carbides, Fe-Co-B boride alloys, hexaferrites, and FeCo nanostructures, synthesized via chemical and metallurgical routes. Through controlled synthesis and comprehensive structural and magnetic characterization, this work demonstrates that magnetic anisotropy, coercivity, and thermal stability can be systematically controlled through morphology design, compositional tuning, microstructural refinement, and interparticle interaction modulation.

Morphology-driven enhancement of magnetic properties, particularly coercivity and blocking temperature, is established in phase-pure Fe₅C₂ nanostructures. By precisely controlling particle geometry, …

Applications Of Doppler Broadening Spectroscopy For The Characterization Of The Surface And Near Surface Of Two-Dimensional Heterostructures, Hany M. Mahdy

Physics Dissertations

This dissertation describes experiments and the analysis of Doppler broadening spectroscopy applied to metal surfaces (Cu, Ag, Au), graphene/Cu heterostructures, and SiGe heterostructures, with particular emphasis on the development of new approaches for extracting quantitative information from annihilation spectra.

The first part establishes the capability of Doppler broadening spectroscopy, particularly coincidence Doppler broadening (CDB), as a surface-sensitive technique. Measurements on clean and adsorbate-covered Cu, Ag, and Au surfaces demonstrate that Doppler-broadened annihilation spectra retain element-specific signatures from the topmost atomic layer. New analysis methods based on ratio-curve modeling enable identification and quantification of sub-monolayer adsorbates, including sulfur, oxygen, selenium, and …

Status Anxiety And Public Support For Reactionary Political Movements, Timothy E. Randall

Political Science Theses

In this enquiry, I explore the conditions that make members of the public receptive to the appeals of reactionary political movements. I also explore the means by which reactionary movements leverage those conditions to gain support. I argue that crisis and status threat conditions prime members of the public to be receptive to the appeals of reactionary movements and that the strategic leveraging of these conditions in their narratives gives rise to status anxiety which, in turn, moves members of traditionally dominant groups to support these movements. I develop an explanatory theoretical framework for understanding status anxiety and its role …

Numerical And Machine Learning Based Recreation Of Damage Morphologies Of Barely Visible Impact Damage, Oscar A. Valdez

Mechanical and Aerospace Engineering Dissertations

Composite laminates are highly sought after in the aerospace industry as they provide strength without dramatically increasing the weight of manufactured structures. However, composite laminates are susceptible to barely visible impact damage caused by routine activities. This type of damage can easily go unnoticed while significantly reducing the load-carrying capability of the laminate. Current non-destructive evaluation techniques, such as ultrasonic scanning, can reveal the damage footprint but provide no insight into delamination through-the-thickness due to the shadowing effect. Micro-computed tomography offers ply-by-ply damage resolution but is unsuitable for field inspections and is constrained by specimen size. This study aims to …

Set-Theoretic Reachability-Informed Model Predictive Control For Mechanical And Aerospace Systems, Jinaykumar Nitinkumar Patel

Mechanical and Aerospace Engineering Dissertations

Modern mechanical and aerospace systems increasingly operate autonomously in environments characterized by nonlinear dynamics, uncertainty, and safety constraints. In these settings, estimation and control methods based on nominal models and single-point trajectory predictions are usually insufficient to ensure safe and reliable operation. This dissertation uses a set-theoretic perspective, in which the system state, uncertainty, and admissible behavior are described by sets instead of point estimates. The key question is not only what the state is, but what set of states remains consistent with the dynamics, disturbances, control limits, and available measurements. This provides bounded descriptions of uncertainty and supports control …

Organizational Support And Burnout In Occupational And Physical Therapists: A Quantitative Correlational Study In The Acute Care Setting, Brenda Ballou-Boyd Mrs.

Occupational Therapy Doctorate Capstone Projects

Background: The United States is positioned for an upcoming healthcare crisis with an estimated deficit of 100,000 healthcare professionals by 2028 (Mercer, 2024). Burnout is well documented among the healthcare community and is a major contributing factor to an ongoing shortage of healthcare professionals, including occupational and physical therapists. Most prior research has focused on burnout from a personal level, but addressing burnout from an organizational level may be more effective in reducing this phenomenon among occupational and physical therapy providers.

Purpose: Despite the high levels of burnout reported, a substantial gap exists in research dedicated towards the …

A Coupled Thermo-Hydraulic Transfer Model For Soil Freezing, Antai Dong, Xiong Zhang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Frost heave is a common challenge in cold regions, threatening infrastructure stability. Despite decades of research, numerical simulation remains difficult due to the complex nature of coupled processes. This study presents a coupled thermo-hydraulic model for soil freezing, developed within the framework of unsaturated soil mechanics. The model uses suction and temperature as primary variables and incorporates a method to estimate ice content. It employs a soil freezing characteristic surface (SFCS), previously developed in related work, to calculate unfrozen water content as a function of both suction and temperature in partially frozen soils. The model is implemented in COMSOL for …

The Effect Of Reviewer Heterogeneity Between One-Time And Multi-Review Reviewers, Price Sentiment, And Pre-Purchase Information On Star Ratings For Amazon Subscription Boxes, Jikhan Jeong

Economics Faculty Research & Creative Works

This study examines the presence, prevalence, and negative polarity of one-time reviewers compared to those who have left multiple reviews across all categories, based on an analysis of 571,544,746 Amazon product reviews. Since sellers and consumers may be interested in specific products relevant to their business or purchasing interests within a category rather than across all categories, this research focuses on the Subscription Boxes category for econometric analysis. This category exhibits an unusual rating distribution, likely presents fewer incentives for promotional reviews, and faces fewer constraints. However, price data is unavailable in this category. Therefore, this study develops price sentiment …

Meta-Analysis Of Probiotic Yeast Factors And Methodologies, Mones J. Hajizadeh

Biology Theses

In recent years, there has been an expanding interest in ameliorating the gut microbiome through the use of yeast probiotics, in contrast to the general focus on bacterial probiotics. The goal of this paper is to determine trends and variations in the probiotic evaluation of the yeast species Kluyveromyces marxianus, Pichia kudriavzevii, and Saccharomyces cerevisiae var. boulardii across 48 studies, and determine probiotic gene homology amongst the three yeasts. Much of the literature on novel yeast strains employs various approaches to assess probiotic efficacy. In this study, the evolutionary divergence of these three species of interest was also evaluated. Furthermore, …

Timing, Orbital Pacing, And Provenance Of Late Paleogene Loess In The Western United States, Xiangwei Guo

Earth & Environmental Sciences Dissertations - Archive

This project examines the timing of loess emergence, the nature of the fluvial–eolian transition, orbital forcing on dust accumulation, and sediment recycling in the late Paleogene White River Formation (Group) of Wyoming and Nebraska, western United States. By integrating traditional sedimentology with machine learning–enhanced grain-size analysis, this research shows that loess accumulation at Flagstaff Rim in central Wyoming began during active fluvial deposition at approximately 35.8 Ma, indicating a gradual transition from fluvial to eolian conditions. Machine learning complements field sedimentology and granulometric interpretation while enabling the development of new, testable hypotheses. Extending this framework eastward to Toadstool Geologic Park …

Occurrence Of Microplastics In The Urban Air And Water Systems And Associated Exposure Risks, Jenny K. Nguyen

Earth & Environmental Sciences Theses - Archive

Microplastics (MP) pollution is an emerging health concern that affects humans and the environment. Urban areas are high exposure zones due to consistent anthropogenic and industrial activity. With air and water as important MP transport and exposure pathways, monitoring and estimating their human exposures are necessary. Air samples were collected from Dallas-Fort Worth (DFW) and Houston in Texas and Cusco, Peru and water samples were from Tarrant County (DFW), Texas. The samples were analyzed using the pyrolysis-gas chromatography/mass spectrometry (Pyr-GC/MS) and the EDI (estimated daily intake) of inhalation and ingestion (normal and high exposures) were calculated. PS, PP, PE, PVC, …

Mitochondria In Local Control Of Programmed Cell Killing & Resilience, Rashna Sharmin

Biology Dissertations - Archive

Specialized cells are commonplace and defined by different compartments. Organelle transport across cell compartments is critical for cell function, as in morphologically complex neurons. Specialized cells can undergo programmed elimination, an essential facet of normal development. My central thesis question asks how intracellular transport of mitochondria, the cell’s energy producers, regulate fated elimination of complex cells. I explored this using the specialized tail-spike cell (TSC) of the roundworm C. elegans. The TSC dies embryonically through the novel ‘tripartite’ developmental killing program, Compartmentalized Cell Elimination (CCE).  In my study, I defined and characterized events at the CCE initiation compartment of the …

Quantification Of Illicit And Prescription Drug Residues In Pasteurized Donor Human Milk: A Comprehensive Analytical Approach, Michelle Brenner, Kaytlin Krutsch, Ashlynn Baker, Dhavalkumar Patel, Palika Datta

Department of Pediatrics Faculty Publications

Objective

To assess the risk of infant exposure to illicit and prescription drug residues, from infant-ready, pooled, pasteurized donor human milk (PDHM) provided by healthy, screened, voluntary non-remunerated donors to a not-for-profit milk bank.

Study Design

A total of 150 pooled samples, representing 742 donor contributions, were analyzed for 15 illicit and prescription drug analytes using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Detected concentrations were evaluated for clinical significance.

Result

All 150 PDHM samples tested negative for residues of marijuana, amphetamines, benzodiazepines, fentanyl, hydrocodone, and morphine. Three samples (2%) contained trace amounts of oxycodone (< 0.6 parts per billion), yielding exposures over 455 times lower than established standards for infant safety (Relative Infant Dose: < 0.022%; standard safety threshold 10%).

Conclusion

Comprehensive analysis detected no clinically …

Causal Effect Estimates Of Online E-Cigarette Marketing Exposure On Future E-Cigarette Harm Perception And Use, Paul T. Harrell, Nicholas T. Williams, Kara E. Rudolph, Rachel Ayala Guzman, Ateeqa Ijaz, Nicole Rychagov, Aaron Null, Silvia S. Martins

Department of Pediatrics Faculty Publications

Background

Globally, over 10 million youth use e-cigarettes; United States use, in particular, dramatically rose in the late 2010's, exceeding year-over-year increases from any other substance in over four decades. This rise has been partially attributed to youth online e-cigarette marketing exposure, but has not been appropriately studied.

Methods

We examined youth data from the Population Assessment of Tobacco and Health (PATH) spanning the dramatic increase period (Waves 4, 4.5, and 5; 2016-2019). We estimated average risk differences (RD) for Wave 5 e-cigarette harmfulness perception and use comparing all youth versus no youth reporting past-month online e-cigarette marketing exposure in …

Protecting Wetlands In The State Of Texas: Assessing Gaps In Regulations, Knowledge, And Professional Roles And Responsibilities, Grace A. Moy

Landscape Architecture Masters & Design Theses

Wetlands rank among earth's most productive ecosystems, providing crucial ecological services such as hydrological regulation, water purification, and habitat support (US EPA, 2015). In Texas, however, rapid urbanization, inconsistent policy enforcement, and the absence of statewide protection frameworks of hastened wetland degradation (Brody & Kang, 2011). Without a robust state regulatory framework (Environmental Law Institute [ELI], 2020), these ecosystems face increasing threats from development and hydrological disturbances.

This thesis aims to identify regulatory and knowledge deficiencies that influence Texas’ current wetland protection status and to offer targeted professional recommendations for landscape architecture professionals to address these shortcomings in future public …

Visual Word Recognition And The Role Of Diacritics: Evidence From Arabic Vowelization., Maram Alharbi

Linguistics & TESOL Dissertations

This dissertation investigates the role of vowelization diacritics in Arabic visual word recognition and their contribution to early stages of lexical processing. Across writing systems, diacritical marks differ in their functional role and in whether they are part of letter identity, raising fundamental questions about how such features are encoded during word recognition. Arabic provides a particularly informative testing ground for these questions: vowelization diacritics in this language carry rich phonological information yet are systematically absent from the texts that skilled readers encounter daily. This interaction between the linguistic value of vowelization and its near-total omission in naturalistic reading positions …