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 …

Reversal And Visualization Of Guitar Stomp Box Effects Using Digital Signal Processing Techniques, Zayaan Sharif Chowdhury

2025 Fall Honors Capstones Projects - Archive

This project presents an approach that develops a Digital Signal Processing (DSP) system that analyzes, and reverses audio effects produced by a custom-built multi-effect guitar stomp box. Using real-time input from the stomp box, the DSP system digitizes the audio signal through an analog-to-digital converter and processes it in Python using NumPy and SciPy libraries. It visualizes parameters such as frequency spectrum, modulation rate, depth, and total harmonic distortion (THD) to evaluate the quality of analog effects like tremolo, delay, vibrato, and reverb. Beyond visualization, the system explores reversing these effects through digital filtering and signal reconstruction, aiming to approximate …

The Alienated Self: A Solo Exhibtion, Kade Winterton

2025 Fall Honors Capstones Projects - Archive

Exhibiting works is an essential step for every artist; this capstone is a creative research project that explores feelings of alienation and otherness, as well as the multiple causes they stem from, resulting in a body of work ready for exhibition. First, research was conducted on exhibiting and curating works. Next, works by contemporary artists who also explored the same topic were examined. Completed works were curated, and an inventory of what was needed to create an exhibition-ready body of work was defined. After this was done, new works were uniquely created, each starting with an idea and a sketch. …

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 …

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 …

Modified Core-Line Techniques For Vortex Identification Using Liutex, Bassam Albalawi

Mathematics Dissertations - Archive

Vortex dynamics govern critical processes in turbulent flows, yet conventional identification methods struggle to resolve individual structures' morphology and evolutionary pathways. Detecting and extracting vortex structures by objective algorithms may lead to a better understanding of turbulence regeneration dynamics through the automated and quantitative assessment of the structures. Although there are many vortex-identification criteria available, they pinpoint only the spatial regions belonging to vortices, with no information on the specific identity, topology, and shape of individual vortices. In this dissertation, we develop a new scheme based on Vortex axis tracking by iterative propagation (VATIP), called modified VATIP algorithm, for three-dimensional …

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’ …

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, …

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 …

Exploring A Collective Grief Experience In The U.S.: Qualitative Findings From Older Parents Whose Only Child Has Died, Yongqiang Zheng, Leslie Wuest, Jeongah Kim, Rebecca Rodriguez

Faculty Publications - College of Social Work

Despite its profound physical and mental health impacts, research on the loss of an only child in later life among older U.S. adults remains scarce. This phenomenological qualitative study explores the lived experiences and meanings older bereaved parents attribute to their loss. Data from 24 participants were collected through written narratives guided by structured questions, and online focus groups. Inductive thematic analysis revealed 6 themes: the enduring intensity of grief, significant secondary losses, feelings of isolation and alienation, the role of social support in coping, and spirituality and religion’s influence on their journey. By amplifying these parents’ voices, the study …

From One Prison To Another: The Inordinate Criminalization Of Women Who Kill Abusive Partners And A Proposed U.N. Response, Annalie Buscarino

Case Western Reserve Journal of International Law

Paradoxically, criminal justice systems around the world punish women who kill abusive partners with inordinate sentences despite explicitly recognizing the victimization that led them to homicide. This Note examines how universally entrenched gender stereotypes lead to such overcriminalization and amount to a violation of women’s rights to equality before the law. This Note then proposes a U.N. resolution offering guidelines for criminal justice systems to craft appropriate judicial responses to women’s survival strategies.

Abundance And Other Food Fixations, Margot J. Pollans

Elisabeth Haub School of Law Faculty Publications

Although most people in the United States no longer devote the majority of their time to food production, processing, and distribution, food remains a daily fixation. This Article explores three driving food fixations--abundance, thinness, and health--and situates each against an inverse fear--scarcity, fatness, and illness, respectively. Mapping these threats onto U.S. food policy, this Article examines, among other policy arenas, food waste policy, nutrition and health claim labeling law, and food additive regulations. Across food policy, these fixations feed what this Article calls the “politics of abundance.” This politics helps to insulate the food industry from deeper systemic reform aimed …

A Supreme Sidestep: The Justices' Artful Dodge On Platform Immunity, Leslie Y. Garfield Tenzer

Elisabeth Haub School of Law Faculty Publications

The foiled ISIS plot to attack Taylor Swift concerts, coordinated by teens on social media platforms with a significant US presence, illustrates the dangerous consequences of unchecked online content. This incident, coupled with other tragic cases such as the sexual exploitation of a minor lured through Facebook and Tyler Clementi 's suicide following a privacy violation on Twitter highlights the urgent need to reassess 47 U.S.C. § 230 of the Communications Decency Act. Enacted in 1996, this law provides broad immunity to interactive computer services, including social media platforms, shielding them from liability for user generated content. While initially celebrated …

Electronic And Born-Digital Records: A Beginner's Guide, Archives Development Program

Digitization Resources

No abstract provided.

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. …

Resetting The Imposter Phenomenon Reality: A Mixed Methods Research Study Of An Immediate Cognitive Behavioral Intervention On Stem Practitioners, Peter D. Smith

Dissertations

Imposter Phenomenon (IP) remains an essential framework for understanding how professionals attribute success to chance or misconceptions rather than genuine abilities. IP is especially pertinent for individuals who feel like frauds when attaining higher positions, convinced the promotions resulted from luck rather than accomplishments and credibility. The misguided mindset cultivates feelings of inadequacy or deceit, even when accolades, experiences, and qualifications prove the contrary. The prevalence of IP is widespread, impacting numerous individuals who have faced or continue to endure episodes of varying intensity. The psychological state makes individuals vulnerable to feelings of inadequacy, leading to reduced productivity, increased procrastination, …

Analysis Of Brain Signals Using Machine Learning Algorithms, Maria Corzo

CURE Proceedings

No abstract provided.