Digital Commons Network^™

U.S. Army Corps Of Engineers Information Session At California Polytechnic State University, Jack Durham Abernathy

Construction Management

This paper presents a detailed analysis of an information session coordinated by Jack Abernathy with the United States Army Corps of Engineers (USACE) on May 14, 2026, at California Polytechnic State University San Luis Obispo. An Army Corps of Engineers info session creates a critical step for undergraduates where they have a professional environment to network with industry professionals and explore unique career paths that may have not been previously considered. The presentation exposed attendees to the history of the Corps of Engineers, employee occupations, and USACE’s varying mission sets. A representative from the USACE Sacramento District brought forward professional …

Self-Healing Concrete In Compression With Crystalline Admixtures, Nathaniel Paul Warfield

Construction Management

The construction industry is steadily pursuing sustainable and regenerative materials that extend service life and reduce maintenance requirements. Self-healing concrete containing crystalline admixtures represents one such technology. This study evaluated the compressive strength performance of a commercially available high-strength concrete with and without a crystalline self-healing admixture. Three 6-inch by 12-inch cylinders were cast using Quikrete High Strength Concrete. One cylinder served as the control specimen, while two cylinders contained Penetron Admix at approximately 1% of cement weight. One admixture cylinder was intentionally cracked after 14 days to allow time for healing before testing. All specimens were tested in compression …

Understanding Cmu Construction Sequencing Through Scheduling Application, Tristan J. Roberson

Construction Management

Concrete Masonry Unit (CMU) wall systems are used very often in all types of construction including commercial and residential. With this said, the scheduling logic behind their installation can often be unclear for students and people new to the industry. The purpose of this project is to analyze CMU construction sequencing and demonstrate how it integrates within an overall project schedule. This study was conducted using interviews with industry professionals, review of CMU manufacturing processes, and development of a simplified Critical Path Method schedule in Microsoft Project. Information from CMU professionals regarding manufacturing processes and lead times were incorporated based …

The Impact Of Religious Behaviors, Islamophobia, Gender Roles, Language Proficiency, And Education Levels On Mental Illness Stigma And Help-Seeking Behaviors Among Arab Women In The U.S., Rima Muhsen

Dissertations

The official U.S. census does not provide data on the number of Arab Americans in the United States, which hinders studies that focus on this population group to explore their needs and improve access to mental health services. Arab women in America represent a subgroup that has received insufficient attention from researchers, particularly regarding culturally sensitive topics such as mental health problems and their associated stigma. The influence of cultural, social, and religious factors on self-stigma associated with mental illness has not been adequately studied among this marginalized group. While previous research has suggested a relationship between self-stigma, social stigma …

Improving The California Boulevard Railroad Underpass: A Feasibility Study Of Persistent Barriers And Practical Improvement Strategies, Jacee D. Carpenter

Construction Management

The California Boulevard railroad underpass in San Luis Obispo has served as an informal pedestrian route for Cal Poly students since pedestrian access across the adjacent railroad tracks was restricted in 2009. Despite its frequent use, the underpass presents challenges related to lighting, drainage, surface conditions, and seasonal flooding that affect safety and accessibility. Previous studies documented these concerns and proposed improvement concepts; however, no significant physical improvements have been implemented. This project evaluates the factors contributing to the lack of improvements and examines practical strategies for enhancing the underpass within existing regulatory, environmental, and jurisdictional constraints. Methods included a …

Developing A Preparation Manual For The Asc Region 6 & 7 Reno Competition, Addyson Mae Demasters

Construction Management

The Associated Schools of Construction (ASC) Region 6 & 7 Competition is one of the most prestigious student construction management competitions in the United States. Success in the competition requires technical knowledge, effective communication, time management, and strategic preparation. The purpose of this senior project was to develop a comprehensive Competition Preparation Manual for future Cal Poly Construction Management students competing in the ASC Reno Competition. The manual was created through the collection and analysis of information from previous competitors, team captains, competition retrospectives, and the author's personal experience participating in ASC Reno competitions. Surveys were sent to students in …

Small-Scale Rainwater Harvesting: A Sustainable Practice For Single-Family Homes In Southern California, Azzah R. Bensrhir

Construction Management

Southern California is prone to drought and struggles with low water supplies. Los Angeles and San Diego County have enacted outdoor water regulations that aim to reduce the overall reliance on municipal and groundwater supplies. Rainwater harvesting (RWH) is a feasible way for single-family homeowners in Southern California to contribute to water conservation efforts. To determine the feasibility of installing, maintaining, and understanding overall challenges and costs of small-scale rainwater harvesting systems, four interviews were conducted with residents of Los Angeles and San Diego County who have owned and operated a RWH system for more than five years. The results …

Redesign And Flow Characterization Of Microcapsules Through Hollow 3d-Printed Microneedles, Ryan Lang

Bioengineering Master's Theses

Traditional bulk cavity microneedles suffer from stagnant zones and internal wall collisions that damage suspended cell carriers. This research computationally optimized and experimentally validated a novel multi-planar, branched hollow microneedle chamber to minimize dead volume and protect sensitive payloads. By replacing the traditional bulk cavity with a symmetric six-peripheral nozzle architecture, COMSOL simulations confirmed the elimination of central stagnation zones. Low fluid velocities (0.05 m/s) maintained streamline alignment, while higher velocities (0.32 m/s) induced wall impacts, a drift completely mitigated by high-viscosity fluids.

Arrays fabricated via SLA 3D printing demonstrated consistent cross-unit nozzle diameters, despite a 27.8% average print shrinkage. …

Investigating Potential Bias In Public Acceptance Of Restorative Justice: The Influence Of Situational And Offender Characteristics, Kiara Haynes

Student Theses

Restorative Justice has been an emerging justice mechanism in the U.S. since the 1970s that advocates are working to expand more widely throughout the justice system. Due to victims and the broader community of the offender being an integral part of the Restorative Justice process, it is critical to consider the general public's support of this novel justice mechanism, as well as the influence that social biases among the public may have on the experience of defendants going through the system. The study conducted examined the effect that social biases toward an offender's personal characteristics have on attitudes and opinions …

The Security Of Llm-Generated Code, Christopher Brian Gonzalez Ayala

Student Theses

The rapid adoption of Large Language Models (LLMs) in software development has transformed coding practices by enabling automated code generation, completion, and optimization. Despite these advantages, concerns persist regarding the security and reliability of LLM-generated code. This study presents a comprehensive evaluation of both the functional correctness and security of code produced by three prominent LLMs as of early 2026. A total of 4,800 code snippets were generated using 100 security-focused programming prompts derived from the OWASP Top 10:2025, translated across eight natural languages and two phrasing styles (literal and natural developer-oriented prompts). To assess performance, a multi-stage experimental framework …

Forensic Analysis Of Temporary Tattoo Markers And Inks, Daniel J. G. Chasse Jr

Student Theses

As tattoos rise in popularity, some marker manufacturers have created temporary tattoo markers so that children and adults can experience tattoos without the permanence of a regular tattoo. These new products are marketed explicitly as ‘temporary tattoo markers’ and intended for direct application to the skin. This research aims to scientifically evaluate the inks from these temporary tattoo markers to elucidate their physical and chemical properties using wet chemistry, visual examination, ultraviolet-visible spectroscopy (UV/Vis), Fourier-transform infrared spectroscopy (FT-IR), attenuated total reflectance infrared spectroscopy (ATR-IR), thin layer chromatography (TLC), and diffuse reflectance infrared spectroscopy (DRIFTS) to analyze temporary tattoo markers and …

Adversarial Robustness Of Perceptual Hashing Systems: A Unified Security Evaluation Framework, Avijit Roy

Student Theses

Social network platforms, child safety organizations, and image provenance systems use perceptual hashing to identify known child sexual abuse material (CSAM), support content moderation and reverse image search, and verify image integrity. Perceptual hashing works by producing similar fingerprints for visually similar images, even after common transformations such as compression, resizing, or minor brightness changes. This useful similarity-preserving property also creates an adversarial attack surface, as attackers can use AI-assisted or conventional image manipulation techniques to move a hash across a matching threshold while maintaining visual similarity, often without access to specialized hardware.

The security failures produced by adversarial attacks …

The Comparative Chemical Analysis Of Colored Henna, Vani D. Bhagwandeen

Student Theses

Henna, a natural dye derived from Lawsonia inermis, is widely used for temporary body art, hair coloring, and cultural decorative practices such as Mehendi. Traditional henna produces a reddish-brown stain through lawsone, a naphthoquinone chromophore that binds to keratin in skin, hair, and nails (Badoni Semwal et al., 2014; de Groot, 2013; Kumar Singh et al., 2015). Commercial henna products have increasingly incorporated synthetic dyes, pigments, and glitter additives to produce a broader range of colors and effects (Blair et al., 2004; Manso et al., 2017; Blackledge & Jones, 2007). Despite their prevalence, limited forensic research has examined the …

Investigating The Detection Ability Of Presumptive Bloodstain Testing Through Concealment Obstacles, Skye E. Lehr

Student Theses

Bloodstain detection can provide valuable information on the ability of presumptive tests. When perpetrators seek to alter the scene of violent crimes to interfere with investigations or flee from justice, crime scene investigation becomes more complex. In this analysis, scenarios where bloodstain evidence is attempted to be removed by household cleaners and covered up by acrylic or oil-based paint, are tested using luminol and Kastle-Meyer direct testing. These bloodstains have been altered by bleach, dish soap or all-purpose cleaner and covered under multiple layers of acrylic or oil-based paint. Evidence is documented both photographically and visually to simulate crime scene …

A Qualitative And Quantitative Comparative Analysis Of Ballistic Bone Trauma From Frangible And Full Metal Jacket Projectiles, Hajar S. Hassan

Student Theses

Ballistic bone research is essential as 90% of homicides with the use of a firearm include injuries to bone. Forensic anthropologists use ballistic bone trauma to gather details and reconstruct an event, but ballistic bone trauma depends on many intrinsic and extrinsic factors. These factors include the type of bone, the type of firearm, and the type of ammunition. As new ammunition and firearms emerge, the literature on ballistic bone trauma remains limited. This novel study compares the bone trauma from the most common projectile, the full metal jacket, to a frangible projectile which is made to break upon impact. …

Walking The Path Of Conocimiento: Understanding And Navigating Workplace Conflict Through A Chicana Feminist Lens, Elisa A. Ortega-Schultz

Dissertations

The growing presence of Latinas in the U.S. workforce underscores the need for deeper understanding of their workplace experiences. Latinas represent one of the fastest growing segments of the labor force; however, research consistently shows that this growth is not matched by equitable access to leadership, compensation, or culturally responsive workplace environments. Latinas continue to experience persistent barriers related to pay inequity, career advancement, cultural belonging, and overall well-being.

Conflict frameworks that account for the unique experiences of Latinas are needed, as dominant approaches rooted in neutrality, procedural efficiency, and Western individualism often fail to account for the embodied, relational, …

Quantum And Conventional Informatics Studies Of Synthesis Energetics And Defect Formation In Nitride Crystal Epitaxy, Andrew Steven Messecar

Dissertations

Machine learning is a valuable approach for the processing and analysis of complex information. By estimating relationships from recorded data, machine learning methodologies can be effective strategies for pattern recognition, enabling investigations and technological applications based thereon. The potential for improved understanding of high-dimensional data has drawn interest towards machine learning from across the sciences, including the research and development of new and improved material systems. In the context of experimental materials research, much of the reported efforts to incorporate machine learning into conventional practice have been primarily focused on either the enhanced analysis of characterization experiment data or the …

Trace: Temporal Rhetorical Analysis And Consistency Evaluation For Legislative Speech, David Hernandez

Master's Theses

Legislators frequently discuss the same policy issues across multiple hearings and legislative sessions, sometimes maintaining consistent positions and other times modifying or reframing their stance over time. Understanding how these positions evolve is important for analyzing political discourse and democratic accountability, yet identifying such shifts at scale remains difficult.

We introduce TRACE (Temporal Rhetorical Analysis and Consistency Evaluation), a system built on the Digital Democracy Database (DDDB) for detecting rhetorical inconsistency in California legislative hearing testimony. TRACE organizes utterances into speaker-anchored timelines indexed by bill and session, then applies hybrid semantic retrieval — combining dense BGE embeddings with BM25 lexical …

The Educational Disconnect: How Much Do Parents Understand About The Special Education Process?, Marisa Anne Aiello Michalowski

Theses & Dissertations

People with disabilities constitute the largest minority group in the United States. Yet, they face significant barriers that often lead to lowered academic outcomes. Federal and state K-12 educational policies emphasize family engagement as a core component of student success. The problem is that parents are not always fully informed of the special education process or their role on the Committee on Special Education (CSE), which in New York State is a team of educators, specialists, and parents that help determine appropriate special education services and placements. The purpose of this phenomenological research study was to explore the knowledge that …

"What Is That Data Really Telling You?": How Central Office Leaders Use Equity-Focused Data Practices To Rethink District Improvement, Nadine Sánchez

Theses & Dissertations

Public school districts face growing expectations to advance educational equity while operating within accountability systems that often prioritize measurable performance outcomes. Despite these expectations, less is understood about how central office leaders use data to support equity-focused systems change across schools. This critical exploratory case study examined how central office leaders in one public school district with an explicit commitment to equity used data to advance equity-focused improvement efforts. Guided by culturally responsive school leadership, coherence, and infrastructure of accountability frameworks, the study explored how leaders established a districtwide vision for equity, built capacity for data use, and used data …

Temporal Integration In Music And Aesthetic Judgments: Assessing Musical Taste Through A Transformer-Based Approach, Sophia M. Senderak

Dissertations, Theses, and Capstone Projects

Music unfolds over time, requiring listeners to integrate information moment by moment to make aesthetic judgments. Although we know that music is likely processed on multiple timescales, it is not known which musical features contribute to short versus long timeframes. This study examined whether a computational measure of temporal integration could help explain aesthetic responses to music. Participants (N = 28) listened to 32 sixty-second clips of classical and electronic music, and continuously rated their enjoyment with a dial. After listening, they then gave an overall liking judgment for each clip. To quantify temporal integration, we derived an integration measure …

Identifying Helium Emission-Line Stars With The Condor Array Telescope, Julia Stewart

Dissertations, Theses, and Capstone Projects

Helium emission-line stars, including cataclysmic variables (CVs), AM Canum Venaticorum (AM CVn) binaries, symbiotic stars, and X-ray binaries, are tracers of compact object binary populations in the Milky Way, and may be viable progenitor systems of Type Ia supernovae. Their space densities are not well constrained - just over 100 AM CVn stars are known out of a Galactic population that may be closer to 100,000. Identifying such systems in large numbers requires wide-field, narrow-band photometric surveys capable of detecting faint emission-line sources across significant sky areas.

In this thesis, I present a narrow-band photometric search for helium emission-line stars …

Neural Correlates Of Recognition Memory And Metamemory In Breast Cancer Survivors: An Event-Related Potential Study, Dishari Zaman Azad

Dissertations, Theses, and Capstone Projects

Breast cancer survivors (BCS) often report noticeable cognitive difficulties despite showing limited impairment on standardized neuropsychological tests. Some have theorized that this is simply an insensitivity of standardized testing to subtle cognitive changes (test-insensitivity hypothesis), whereas others have suggested there are early neural changes that are detected by patients but precede detection by these tests (early signal hypothesis) or that when they achieve normal performance, it is through saliently effortful compensatory processes (compensation hypothesis). The present study tested these theories by assessing metamemory and recognition memory retrieval in BCS and non-cancer controls (NCC) using both behavioral and event-related potential (ERP) …

Exploring The Effect Of Babble Background Noise On Learning New Patterns In An Artificial Accent Of English In Monolingual And Bilingual Young Adults, Mariana Vasilita

Dissertations, Theses, and Capstone Projects

The current study examined how background noise affects the learning of novel phonetic and phonological patterns in speech. While prior research has shown that bilingual participants may learn new phonetic patterns more successfully than monolingual participants under quiet conditions, it remains unclear whether this advantage persists in more ecologically valid listening environments.

We investigated phonetic learning skills in monolingual English speakers (n = 13) and early bilingual speakers (n = 13). Participants were trained and tested on an artificial English accent presented in the presence of 12-talker babble noise (+10 dB SNR). A digit span task was also administered to …

Monsters In The Gutter: Queerness And Family In Graphic Novels, Maren Beriss

Dissertations, Theses, and Capstone Projects

In this thesis I read two graphic novels together: My Favorite Thing is Monsters by Emil Ferris and Black Hole by Charles Burns. Although the stories are quite different, they mirror each other quite closely: Burns’ story takes place in a homogenous suburb; Ferris’ is set in a diverse part of Chicago. Both deal with what it means to be a monster, but in different ways. Ferris has a clear framework of the different kinds of monsters – good, bad, and villager – which is at times helpful but often too narrow. Yet reading Burns with this lens in mind …

Urban Sacred Grove: A Visioning For Collective Care, Preservation, Environmental Justice, And Resilience, Oluwadara A. Ojugbele

Dissertations, Theses, and Capstone Projects

My capstone explores how the concept of sacred groves—a community-based practice of conserving forest areas for cultural, spiritual, or religious purposes—can be reimagined as a framework for urban environmental stewardship and community care. Sacred groves have historically varied across time and place but consistently serve as protected spaces that honor divine forces, ancestors, and community values. In the Yoruba context, groves demarcate lush forests as abodes for oriṣas (divine forces) and spiritual beings, often containing shrines and artifacts that embody cultural beliefs. My capstone draws on the sacred grove concept and aims to illustrate how urban communities might adopt sacred …

Turning Boycott Into A Sustainable Opportunity: Leveraging Boycott To Boost Local Production And Enhance Local Market Competitiveness In Egypt, Alaa Maher

Theses and Dissertations

While existing literature largely concentrates on the consumer behavior dimensions of boycotts, limited attention has been paid to their structural economic implications for FDI and local production. This paper frames the 2023 boycott campaign as a demand shock in Egypt’s food and beverages sector. Dependency theory is applied to assess the pre-boycott stage, where MNCs’ market power created structural dependencies within the sector. Dynamic capabilities theory is employed to explain the heterogeneity in firm responses during the boycott and their attempts to acquire sustainable market share. Using a multi-case study design, qualitative in-depth interviews were conducted across 16 firms in …

Spatiospectral Lobes And Radiation Modeling Of Partially Coherent Supersonic Jet Noise, Tyce Wayne Olaveson

Theses and Dissertations

Noise fields generated by high-performance military jets are known to contain acoustic structures that differ from their simulated and lab-scale counterparts. These differences may limit current noise control efforts, which are designed and tested at scale before being considered for full-scale aircraft. One such noise structure is the presence of spatiospectral lobes, which appear as multiple spectral peaks at single microphone locations and multiple radiation lobes in field reconstructions. This dissertation uses data collected from the T-7A jet noise measurement to characterize the spatial behavior of the spatiospectral lobes as well as their first time-domain description. A multiple wavepacket decomposition …

Daily Rainfall Forecasting Over West Bengal With Spatio-Temporal Graph Networks, Risheek Ghosh

Master’s Dissertations

Daily rainfall is hard to forecast where most days are dry, a few days are very wet, and almost all of the rain arrives in one season. This dissertation studies day-ahead rainfall forecasting over West Bengal, India, using models that learn from both the temporal and the spatial layout of measuring stations. We first build up a forecasting model in stages, from simple models that look at one station’s past to a graph-based model that links nearby stations, and we identify the strongest deterministic forecaster among them. We then ask whether the choice of input data changes the story, by …

Enhancing Postsecondary Outcomes For Students With Emotional And Behavioral Disorders: A Design-Based Mixed Methods Approach To Transition Planning, Kate M. Schrum

Dissertations

Students with emotional and behavioral disorders (EBD) experienced significantly lower postsecondary outcomes when compared to same-aged peers. These outcomes included lower graduation rates, higher unemployment rates, and difficulty establishing independent living arrangements (Wagner & Newman, 2015). Following a human-centered, design-based approach, the scholar-practitioner found a lack of consistent and meaningful transition support specifically designed for students with EBD. Working with a stakeholder team of educational professionals directly involved in supporting transition for students with EBD at an alternative special education program, the scholar-practitioner developed a "Transition Toolkit". The toolkit contained scaffolded grade-level checklists (for grades 6–12) with self-advocacy and goal-setting …