Digital Commons Network^™

Breaking Granularity Barriers: Overcoming I/O Abstraction Limitations For High-Performance Storage Systems, Chen Zhong

Computer Science and Engineering Dissertations - Archive

Modern storage hierarchies exhibit performance differences spanning eight orders of magnitude. Each tier in the hierarchy presents fundamentally different optimal access sizes and patterns. Most systems read and write data in fixed-size units across different tiers, typically power-of-2 sizes. It simplifies data management but also suffers from large write amplification when handling small accesses in many real-world workloads. This fundamental disconnect between fixed-size I/O design assumption and real-world usage patterns represents the core challenge.

The storage community has recognized the limitations of fixed-size I/O abstractions and is exploring alternatives, like the new emerging NVMe-KV interface and object-based storage, which aim …

Environment And Intention Awareness For Navigation And Collaboration, Bhaskar Chandra Trivedi

Computer Science and Engineering Dissertations - Archive

Unmanned Aerial Systems (UAS) have become increasingly popular as versatile platforms for tasks such as surveillance, inspection, delivery, and maintenance. In many applications, UAS operate in environments frequented by people or containing sensitive infrastructure, which introduces physical risks in case of vehicle failure, as well as psychological and privacy concerns that may limit their acceptability. Ensuring safe and efficient operation thus requires that UAS consider these risks when planning navigation strategies. While prior information, such as city maps and building layouts, can partially inform risk assessment, such data is often incomplete, necessitating real-time augmentation of risk maps using sensor information. …

Scalable, Secure, And Adaptable Perception Systems Through Adversarial Analysis And Federated Fine-Tuning, Arkajyoti Mitra

Computer Science and Engineering Dissertations - Archive

Perception systems are fundamental to intelligent machines, enabling them to sense, understand, and interpret complex environments. However, as perception increasingly underpins critical applications such as autonomous vehicles, IoT healthcare devices, and smart trading platforms, challenges related to security, scalability, and environmental understanding have become more pressing. This work addresses three core research questions: (1) How can we identify, analyze, and mitigate adversarial vulnerabilities in perception systems to ensure reliable operation under adversarial conditions? (2.1) How can AVPS models be efficiently scaled and fine-tuned across decentralized and resource-constrained environments while preserving privacy and performance? (2.2) How can we scale generative models …

Complexity Machines: New Histories Of North American Automobile Production, 1900-1950s, Kevin A. Moskowitz

History Dissertations - Archive

This dissertation examines the design and manufacture of the mass-produced automobile in North America from its inception at the start of the twentieth century through the height of production in the late 1950s. This network of producers constituted the single largest industry in North America. The success of this market required producing a product that was desirable to consumers in design, affordable to purchase, and could be built in high enough quantities to justify the realignment of the rest of North American society to serve this new method of transportation. This dissertation is a shift away from demand studies concerned …

Coping Strategies As Predictors Of Acculturative Stress Among International College Students, Naba Khan

2025 Fall Honors Capstones Projects - Archive

This study examined how coping strategies influence acculturative stress among international and multicultural college students. A quantitative correlational design was used with 36 participants recruited through convenience sampling at the University of Texas at Arlington. Participants completed four standardized Likert-type scales measuring acculturative stress, general coping, and academic coping. Correlational analyses showed that age was negatively related to acculturative stress and positively related to coping. A mediation analysis using PROCESS Model 4 indicated that coping partially mediated the relationship between age and acculturative stress, accounting for 39% of the variance, R²=.39, F(2, 33) = 10.60, p < .001. Age significantly predicted coping (β=.06, p=.015), while coping marginally predicted acculturative stress (β= -.26, p = .068). Findings suggest that coping strategies play a modest but protective role in reducing acculturative stress, with older participants reporting slightly greater coping and lower stress.

The Influence Of Social Support On The Stress Levels Of Pre-Nursing Students, Michelle Chinwendu Nicole Izuwah

2025 Fall Honors Capstones Projects - Archive

Introduction/Background: The nursing shortage in the United States continues to pose a significant challenge due to the widening gap between the supply of and demand for qualified nurses. The COVID-19 pandemic demonstrated the importance and vitality of nurses to society. Thus, it is important to support students throughout their nursing journey, even from the earliest stages. Pre-nursing students are college students who have not yet begun taking upper-division classes and are enrolled in nursing programs, and face a unique set of struggles due to the pressure of prerequisite classes, as well as fears of not being accepted into the nursing …

Impact Of Glufosinate On Soil Microbial Community Dynamics, Sarobi Das

Biology Dissertations - Archive

The increasing global regulations of glyphosate due to its possible carcinogenicity and environmental hazards have necessitated the search for alternative herbicides. Glufosinate-ammonium offers a sustainable attribute due to its low toxicity and limited reported herbicide resistance cases. Despite its increasing agricultural importance, very limited studies are done on its environmental impact, especially on the soil systems. This thesis examines the ecological behavior of glufosinate in soil, precisely focusing on its effect on the dynamics of soil microbiome and the potential use of Bradyrhizobium japonicum USDA110 for bioremediation by reversing the effect of microbial dysbiosis. A series of 30-day mesocosm studies …

How Individual Traits Predict Distribution Patterns And Community Convergence, Zachary K. Lange

Biology Dissertations - Archive

One of the fundamental questions in biology is whether natural conditions lead species and communities toward predictable outcomes. Answering this question requires understanding how traits of individual organisms are connected to species- and community-level patterns. In Chapter 2, I examined how thermal physiology and environmental temperatures interact to determine the distribution patterns of Anolis lizards on the Greater Antilles. I combined lab-measured thermal traits (critical thermal minimum: CT_min, critical thermal maximum: CT_max, thermal preference: T_pref) with occurrence and abundance data from 21 species of Anolis lizards collected from extensive mark-resight surveys of communities across …

Parsimony, Parallelism, And Presentation: The Impact Of Presentation On Evaluation, Peter Mclemore

Psychology Theses - Archive

In professional and academic settings, support for creative ideas often hinges on how effectively those ideas are communicated in writing. This study examined how two sentence-level rhetorical features—parsimony and parallelism—influence the evaluation, support, and recall of written proposals featuring creative restaurant concepts. Using a 2×2 within-subjects design, 211 undergraduates reviewed proposals manipulated to vary in parsimony (high vs. low) and parallelism (high vs. low). Participants rated each proposal on quality, originality, elegance, support, and completed a recall task. Contrary to expectations, proposals with low parsimony and low parallelism received the highest evaluations across all three creative indicators (i.e., quality, originality, …

Developing The Rural Older Adult Dementia Prevention-Health Behaviors (Road-Hb) Questionnaire: A Mixed Methods Approach To Instrument Development, Jessica Cassidy

Social Work Dissertations - Archive

Older adults living in rural communities are at heightened risk of dementia; however, preventative strategies can reduce these risks. To facilitate dementia prevention efforts in rural communities, this methodological study developed the Rural Older Adults Dementia prevention–Health Behaviors questionnaire (ROAD-HB) by applying a lifespan approach to the Health Belief Model (HBM). The questionnaire contained three embedded instruments and was constructed following a stage development design involving item pool processes with community and expert review panels. Convergent mixed methods were used to assess the ROAD-HB’s validity, including a pretest in 36 older adults from two rural Northeast Texas counties and cognitive …

Understanding The Sociodemographic Correlates Of Early Social Security Retirement, Erica D. Robinson

Social Work Dissertations - Archive

Using data from the Health and Retirement Study (HRS), a nationally representative sample of Americans aged 50 and older, this study employed logistic regression analysis guided by intersectionality theory and the Intersectionality-Based Policy Analysis (IBPA) framework to examine the influence of marital status, ever having children, educational attainment, self-reported health, and race/ethnicity on receiving Social Security retirement benefits early (before reaching the Social Security Administration’s full retirement age (FRA)) among women. Individuals’ monthly and total lifetime Social Security retirement amounts, as well as longevity, are influenced by when they begin receiving Social Security retirement payments. Findings revealed that reporting excellent/ …

Burnout Among Nurses In The United States, Faheem Ohri

Social Work Dissertations - Archive

Burnout is an exhausted state of the body, mind, and emotions, characterized by feelings of “depersonalization and reduced personal accomplishment” resulting from prolonged and continuous occupational stress. Burnout among nurses in the United States (U.S.) is a growing concern with significant implications for healthcare professionals and patient outcomes. Nurse burnout compromises patient safety and workforce stability, but pre-pandemic national correlates remain understudied. This dissertation examined employment settings and demographic correlates of burnout among U.S. nurses using the National Sample Survey of Registered Nurses (NSSRN) secondary datasets. Compared inpatient burnout odds pre-/post-pandemic using national twin surveys. Jackknife complex survey logistic regression …

Enhancing Professional Development For Third Space Roles: Reflections On The Added Value Of Learning Circles, Linde Moriau, Réka Matolay, Emma Mckenna, Andrea Toarniczky, Judit Gáspár, Márta Frigyik, Catherine Bates

Articles

This paper explores how Learning Circles can support higher education staff in navigating the complexities of contemporary educational landscapes with greater confidence, creativity, and efficacy. It presents qualitative research rooted in the three-year Erasmus+ project CIRCLET, involving five European universities. Learning Circles were implemented as a core component of professional development programmes, aiming to foster quality integration of Community Engaged Research and Learning (CERL) in academic practice. Drawing on a collaborative autoethnographic research design, we reflected on our experiences as Learning Circle designers, facilitators, and participants to identify manifestations of professional growth emanating from our project activities. We build on …

Excitation And Polarization Of Isolated Neurons By High-Frequency Sine Waves For Temporal Interference Stimulation, Iurii Semenov, Vitalii Kim, Giedre Silkuniene, Andrei G. Pakhomov

Bioelectrics Publications

The capacity of temporal interference (TI) stimulation to target deep brain regions without affecting nearby surface electrodes remains uncertain. Using artifact-free optical recording, we compare excitation patterns and thresholds in hippocampal neurons stimulated by “pure” and amplitude-modulated sine waves, representing TI waveforms near electrodes and at the target, respectively. We show that pure 2- and 20-kHz sine waves induce repetitive firing at rates that increase up to 60–90 Hz with stronger electric fields. Beyond this limit, action potentials merge into sustained depolarization, resulting in an excitation block. Modulating the sine waves at 20 Hz aligns firing with amplitude “beats” and …

Graphene-Polymer Nanocomposite For Electromagnetic Interference Shielding, Ravi Venkata Surya Sai Mogilisetti

Mechanical and Aerospace Engineering Theses - Archive

Polymers have widespread usage in most industries, such as aerospace, automotive, telecommunications, and medicine, mainly because they have a positive lightweight nature and excellent mechanical properties. One significant advantage of polymeric materials is their ability to combine nano-fillers, greatly enhancing their mechanical, electrical, and thermal properties. In the category of polymer matrices, polypropylene (PP) is notable for its low cost, ease of processing, and balanced mechanical properties. However, its relatively lower modulus and strength limit their applications in high-performance engineering. This research explores the addition of graphene into polypropylene to improve its mechanical properties and establish a conductive network for …

Materials Reliability In Direct-To-Chip Cooling: A Systematic Study Of Aluminum Corrosion In Next-Generation Data Center Coolants, Fnu Harish Gangadhara

Mechanical and Aerospace Engineering Theses - Archive

Data centers are rapidly scaling to support artificial intelligence, cloud platforms, and other high-performance workloads, driving a sharp increase in chip and rack power densities that are now approaching, and in some cases surpassing, 50–100 kW per rack. In response, direct-to-chip liquid cooling has become a key enabling technology for managing these extreme thermal loads, yet the durability of materials in contact with the coolant remains a major reliability concern over system lifetimes. Copper has traditionally been used for cold plates and cooling-loop components, but its relatively high cost, mass, and supply-chain uncertainty are motivating a shift toward aluminum as …

Discrete Time Risk Processes With Stochastic Premiums And Dividends, Enoch J. Dangbe

Mathematics Dissertations - Archive

Risk processes typically emerge in insurance and finance and are concerned with stochastic representation of uncertainties of real-world events. Main objective amounts to quantifying the chances of both desirable and undesirable events and balancing their mutual impact for the purpose of developing models that in some sense optimize the outcome from the business perspective. Our research is concerned with studying the evolution of the surplus process in which time and assets are integer-valued. Initial capital, random premiums, random claims, dividend payments based on assets’ performance constitute the components of our model. Our findings established recursive formulas for the total expected …

Examining Student Understanding Of Series Convergence Using Script Writing, Eduardo Torres Manzanarez

Mathematics Dissertations - Archive

This exploratory study investigates second-semester calculus students’ understanding of series convergence using both nonscripting and scripting-based tasks. Researchers recognize that students encounter difficulties with learning series, including series convergence, and that there is a need for more meaningful tasks that aid students’ learning of series. Script writing, used mainly with prospective mathematics teachers, can be used to explore mathematical understandings. Thus, this study examines how script writing, in the form of a scripting task, elicits students’ understanding of series convergence in contrast to nonscripting-based tasks to determine the potential of script writing in assessing this student understanding. We examine students’ …

Comparative Life Cycle Assessment Of Conventional Open-Cut Pipeline Replacement With Trenchless Cured-In-Place Pipe Renewal Method For Wastewater Applications Using Midpoint Approach, Eesha Nilesh Karkhanis

Civil Engineering Theses - Archive

Underground infrastructure development has a significant impact on society, leading to continuous technological advancements. With the rising environmental concerns, novel technology is leaning towards adapting to sustainable practices for pipeline rehabilitation. Conducting a comparative study of environmental impacts produced by pipe renewal and replacement processes is a vital step towards sustainable development of underground infrastructure. Open-cut Pipeline Replacement (OCPR) is the conventional method used for pipeline rehabilitation, which involves the excavation of the ground surface to place a new pipe underground or replace an existing one. This process includes the trenching of ground, followed by surface reinstatement through backfill. The …

Assessment Of Long Term Durability Of Prefabricated Frp Strip Systems For The Rehabilitation Of Concrete, Karunya Kanagavel

Civil Engineering Theses - Archive

Fiber Reinforced Polymer (FRP) composites provide an extremely effective means of rehabilitating deteriorating and understrength concrete elements due to their characteristics of high specific strength and stiffness, corrosion resistance, and potential long-term durability, lightweight nature, and ease of placement in the field. Despite significant use of these materials, there is still a lack of long-term durability data. With this in mind, the current study investigates the impact of environmental exposure and aging on 3 commercially available prefabricated carbon fiber reinforced composite strips and their recommended adhesives used in externally bonded rehabilitation with the aim of providing a comprehensive set of …

Personality And Victimization: The Relationship Between The Big Five Personality Traits And Victimization In Adulthood, Cameron Kan

Criminology & Criminal Justice Theses - Archive

Myriad risk factors have been found to predict victimization. Research, however, has yet to examine the impact of personality—if any—in the likelihood of victimization in adulthood. The current study attempts to fill this gap in the literature by being the first to examine the effects of the Big Five personality traits, also known as the Five Factor Model, on adult victimization in a nationally representative sample (Add Health). Results reveal that scoring high in extraversion is related to a 12 percent increase the in rate of victimization controlling for a host of temperamental and criminological covariates. Depressive symptoms, criminal behavior, …

Legal Expertise And The Litigation Risk From Carbon Emissions, Mahmud Rahman

Accounting Dissertations - Archive

The increasing frequency of climate-related litigation presents significant risks for high-emitting firms, leading many to adopt strategies that reduce legal exposure and associated costs. General Counsel (GC), due to their legal expertise, are increasingly integrated into top management to help firms navigate this complex regulatory environment. Using an ordered logit model, this study finds that firms with higher greenhouse gas (GHG) emissions are more likely to have a GC to their executive team. The presence of a GC in top management leads to a lower likelihood of the firm being fined for violations as well as lower penalties of federal …

Case Study Examining The Effects Of Mentorship On The Attrition Of Novice Principals In Urban School Districts, Nikia Barnett

Educational Leadership & Policy Studies Dissertations - Archive

The evolving role of school principals has undergone a significant transformation, shifting from traditional teacher management to a multifaceted leadership position that balances managerial and instructional responsibilities with a primary focus on enhancing student achievement. As principals now face increasingly complex challenges, including heightened school accountability, widening student achievement gaps, diminished community support, and fluctuating parent engagement, state programs and school districts struggle to provide adequate support to ensure the retention and longevity of these pivotal educational leaders in their roles.

This study examined how eight novice principals (with 0–5 years of experience) in urban school districts perceived mentorship influenced …

The Commuter Student Experience: Challenges And Impacts On Student Success, Seth A. Ressl

Educational Leadership & Policy Studies Dissertations - Archive

Commuter students at large public universities often face barriers to engaging in campus co-curricular activities, primarily due to off-campus commitments, which can affect their academic success and retention. Drawing on student engagement theory, this qualitative narrative study explores commuter students’ experiences with co-curricular involvement and its perceived impact on their academic performance, skill development, social connections, and persistence at a large public four-year university. Data collected through in-depth interviews with commuter undergraduates were analyzed to identify common themes regarding students' perspectives, challenges, and impact related to co-curricular activities. The findings suggest that active involvement in student organizations and campus events …

The Genesis Of Constitutions: A Natural Language Processing Approach, Tejas Ramdas, Patrick Chung-Chia Huang, Nuno Garoupa, Martin T. Wells, Yun-Chien Chang, Tom Ginsburg

Public Law and Legal Theory Working Papers

The diffusion of constitutional ideas and models has been the subject of extensive scholarship. In this paper, we use natural language processing methods to examine the persistence of constitutional ideas and models, focusing on how 16 core and iconic constitutions influence 572 newer constitutions over a long period (1900–2020). Our findings indicate that “old” core constitutions (such as those of the U.S. of 1789, Spain of 1812, France of 1848, and to a lesser extent France of 1791) have maintained significant influence over those 121 years. Austria of 1920 and France of 1946 are the most influential among the 20th …

Denile On The Nile: Balancing Ethiopia's Equitable And Reasonable Utilization Of The Nile And Egypt's Desire To Maintain The Status Quo, Tyler Tipton

Case Western Reserve Journal of International Law

For nearly one hundred years, Egypt has maintained complete control and utilization of the Nile River under the 1929 Nile Agreement signed by Egypt and the United Kingdom. This agreement was amended in 1959, making Sudan a party but alienating the remaining Nile Basin States. Ethiopia has now posed the greatest challenge to the validity of these Agreements by constructing the Grand Ethiopian Renaissance Dam. This Note argues that the longstanding bilateral 1929 and 1959 Nile Agreements can no longer maintain their enforceability against the rest of the Nile Basin because they violate customary international water law and infringe on …

Perioperative Surgical Site Infection Reduction Bundle In Colorectal Patients, Flatasha A. Roland

Doctor of Nursing Practice (DNP) Scholarly Projects - Archive

Surgical site infections (SSIs) are a common and preventable complication after colorectal procedures, significantly impacting patient morbidity and increasing healthcare costs. This quality improvement (QI) project aimed to lower SSIs in adult colorectal surgery patients by implementing a perioperative SSI reduction bundle at a large acute care facility in North Texas. The intervention targeted three modifiable risk factors: perioperative hypothermia, hyperglycemia, and incorrect antibiotic timing. Despite established protocols, institutional data revealed subpar compliance with active warming (46%), blood glucose control (52%), and antibiotic stewardship (75%), all of which fell below national benchmarks. A gap analysis and literature review guided the …

Regionality In Heart Failure Self-Care Behaviors Using The Medical Expenditure Panel Survey, Gretchen K. Wendt

Nursing Dissertations - Archive

Heart failure (HF) risks increase as patients age, with most of the HF patients having at least one chronic condition and 40% having two or more. Further confounding the HF morbidity and chronic medical conditions are psychiatric conditions like depression and anxiety. For most Americans with HF, managing the diagnosis and chronic conditions can be overwhelming. To formalize the definitions of HF disease management, the concepts of self-care from the situation-specific theory of HF self-care (SST-HFSC) were applied.

The medical complexity of HF self-care during the pandemic was shown to vary based on the US region where the individual resided. …

No Longer Invisible: 2025 Massachusetts Asian And Pacific Islander American (Apia) Community Survey Report, Watanabe P. Dhaurali S.

Institute for Asian American Studies Publications

The first Massachusetts Asian Pacific Islander American (APIA) Community Survey gathered opinions from 1,414 APIAs across the state in March 2025 on issues such as economic stability, political engagement, safety and sense of belonging, healthcare access, as well as recent executive actions by the federal administration. The survey was offered in Chinese, Vietnamese, and Khmer languages in addition to English.The resulting data was disaggregated by the three largest APIA subgroups in MA: Chinese, Indian and Vietnamese Americans.
Key findings include that housing affordability and cost of living are the top economic concerns for APIAs across Massachusetts; both citizens and non-citizens …

Gardner-Webb, The Magazine 2025, Fall (Volume 30), Noel T. Manning

Gardner-Webb, The Magazine

Gardner-Webb, The Magazine, previously titled The Webb Magazine, focuses on alumni news and campus events from Gardner-Webb College; now Gardner-Webb University. This issue includes articles celebrating 60 years of the GWU Nursing program, updates from interim president Nate Evans, stories from GWU Alumni (Alana Dagenhart, Keon Williams Jr., and Caroline Leitten), and Dr. Steve Harmon's coverage of the installation of Pope Leo from Rome.