Digital Commons Network^™

Hide-And-Sweep: Detecting Concealed Cameras Via Led Illumination Sweeps, Jonghyuk Yun, Jaeyoung Moon, Yunseo Park, Sean Rui Xiang Tan, Byunghyun Kim, Rajesh Krishna Balan, Jun Han

Research Collection School Of Computing and Information Systems

Hidden cameras have increasingly infiltrated hotel and Airbnb rooms, posing serious privacy risks. Detecting such cameras is challenging because they are visually inconspicuous and often embedded inside everyday objects. Even worse, existing handheld detectors are manual and also rely on single-angle illumination and hence suffer from high false-positive rates. We present SweepLED (pronounced "sweepled")1, a practical hidden camera detection system that operates on a commodity smartphone augmented with an unobtrusive LED-embedded case. SweepLED performs LED sweeping - a controlled sequence of multi-angle illumination - while the user simply holds the phone still by hand, enabling the camera to capture how …

Heat Transfer And Micropolar Characteristic Analysis For Fluid Flow Over A Contracting Permeable Infinite-Length Cylinder: A Fractional Derivative Study, Khalid Al Homran

Theses

This study presents a comprehensive analysis of heat transfer and micropolar fluid characteristics for flow over a contracting permeable infinite-length cylinder using fractional derivative modeling. The micropolar fluid model accounts for microstructure effects that are prevalent in many practical applications, such as polymeric fluids, colloidal suspensions, and biological fluids. The inclusion of fractional derivatives allows the analysis to incorporate memory effects, which provide a more accurate depiction of the physical phenomena compared to classical integer-order models. The governing partial differential equations, representing the momentum, micropolar momentum and energy transport processes, are transformed into a set of nonlinear ordinary differential equations …

Ai-Powered Student Support And Development Platform, Wadha Rashed Alyammahi

Theses

Over the past few years, academic stress and student mental well-being have become critical concerns in educational settings, significantly affecting academic performance and overall quality of life. Students increasingly rely on digital platforms for academic support; however, many existing solutions lack the ability to adapt to users’ emotional states or provide personalized, context-aware assistance. In response to this challenge, this study presents the design and development of an intelligent, stress-aware conversational support system for students based on advanced natural language processing techniques and large language models.

The main goal of this study is to explore the effectiveness of an LLM-based …

Draft Final Bpsou Unreclaimed Sites: Ur-46 Remedial Action Work Plan (Rawp), Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Co●Lab: Co-Creating Student Formation For Social Justice Leadership, Iliana Molina Estrada

Social Justice in Educational Leadership EdD Dissertations

Higher education institutions face a persistent challenge: efforts to promote social justice, while meaningful, often lack a shared language and intentional connections to student formation. Compounding this fragmentation, students and community partners are frequently absent from the decision-making processes that shape their own learning and development. This mixed-methods study, grounded in Design-Based Research (DBR), sought to collaboratively design a student formation model that connects fragmented efforts, positions students and community partners as co-creators, and strengthens students' capacity to contribute meaningfully to their communities.

Data were collected through questionnaires completed by 45 students and semi-structured interviews with 13 participants, including administrators, …

Erosion And Accretion: Mobilities Of Sand, People, And Memory At Queer Riis Beach, Jah Elyse Sayers

Dissertations, Theses, and Capstone Projects

The People’s Beach at Jacob Riis Park on the Rockaway Peninsula of Queens, New York, is a vibrant place of queer and trans public-space placemaking—and especially Black and working class queer and trans placemaking. A distinct queer ecology emerges in the interplay of the dynamic movement of the barrier island, queer and trans—especially queer and trans Afro-diasporic—mobilities. This queer ecology, while articulated with, also defies and exceeds logics and workings of private property. In response to a convergence of pressures on Black, queer, trans, and working-class placemaking on the beach site in the 2020s, beachgoers have mobilized longstanding provisional socialities …

Ldm-Morph: Latent Diffusion Model Guided Deformable Image Registration, Jiong Wu, Tinsu Pan, Kuang Gong

Faculty, Staff and Student Publications

Deformable image registration plays an essential role in various medical image tasks. Existing deep learning-based deformable registration frameworks primarily utilize convolutional neural networks (CNNs) or Transformers to learn features to predict the deformations. However, the lack of semantic information in the learned features limits the registration performance. Furthermore, the similarity metric of the loss function is often evaluated only in the pixel space, which ignores the matching of high-level anatomical features and can lead to deformation folding. To address these issues, in this work, we proposed LDM-Morph, an unsupervised deformable registration algorithm for medical image registration. LDM-Morph integrated features extracted …

Parenting Styles And Experiences Of Parents Of Children With Down Syndrome Displaying Aggressive Behaviors, Melanie Ray

Walden Dissertations and Doctoral Studies

No abstract provided.

The Latino Higher Education Landscape In Massachusetts, Fatema B. Ahad, Fabián Torres-Ardila, Elisa Castillo, Lorna Rivera, Joseph B. Berger

Gastón Institute Publications

This white paper provides a statistical overview of HSIs in Massachusetts within the state’s evolving demographics and postsecondary education context. It presents historical trends on student enrollment, student outcomes, and faculty and staff composition, highlighting the state of Latino students in the Commonwealth. The analysis offers descriptive data to inform policymakers, practitioners, and institutional leaders. It does not evaluate causal relationships or institutional effectiveness. The institutions included in this report were identified as HSIs and emerging HSIs through full-time equivalent (FTE) analysis for fall 2024 data. This is not an official or comprehensive list of schools eligible for, or that …

Bacterial Adaptation To Radiofrequency Electromagnetic Fields Based On Experiences From Ionizing Radiation, Ilham Said-Salman, Seyed Mohammad Javad Mortazavi, Sami El Khatib, Seyed Alireza Mortazavi, Lembit Sihver

Informatics and Engineering Systems Faculty Publications

Bacteria, part of the three domains of life (Eukarya, Archaea, and Bacteria), are constantly exposed to man-made electromagnetic fields, which often exceed the intensity of natural electromagnetic sources. In response to this exposure, bacteria have developed various defensive and resistant traits. This article presents an overview of both historical and recent research on how bacteria adapt to common sources of Radiofrequency Electromagnetic Fields (RF-EMF). The widespread use of mobile phones and Wi-Fi, both utilizing Radiofrequency (RF) radiation, raises potential public health concerns, which have been addressed by international organizations like the World Health Organization (WHO). Understanding how bacteria adapt to …

Recycling Aged Crumb Rubber-Modified Asphalt Pavements: A Review, Kwadwo Ampadu Boateng, Meng Wu, Dongzhao Jin, Zhanping You

Michigan Tech Publications

This study provides a comprehensive review of current progress and challenges in recycling crumb rubber-modified asphalt (CRMA) pavements. It examines key aspects, including mechanical performance, rejuvenation methods, chemical characterization, practical case studies, and environmental implications. Particular emphasis is given to the technical barriers that influence recyclability, such as the mix design for recycled mix, accounting for the combined aging of both the asphalt binder and the crumb rubber particles, and optimizing the rubber content alongside chemical interaction of rejuvenating agents. Existing research indicates that several traditional recycling practices, especially full-depth reclamation and hot central plant recycling, are generally suitable for …

A Near-Field Communication (Nfc) Multi-Sensor Node With Optimized Read Range And Adaptive Power Management For Remote Monitoring, Rishin Patra, Hilary Scott Nkimbeng Cho, Jin W. Choi

Michigan Tech Publications

This paper presents the design of a batteryless near-field communication (NFC) multi-sensor node with an integrated adaptive power-management system for sensing applications. The work focuses on harvesting energy from a 13.56 MHz NFC field to power an ultra-low power sensing platform. The design consists of the TI RF430FRL152H, an integrated NFC transponder with an embedded MSP430 microcontroller core and ferroelectric random-access memory (FRAM) non-volatile memory. The system combines an ISO/IEC 15693 NFC front end, a tuned loop antenna for optimized power harvesting, and multiple analog and digital sensor interfaces, and a firmware architecture for intermittent harvested energy operation. The aforementioned …

Well-Being, Resilience, And Trauma During Migration: A Mixed Methods Study Of Venezuelan Migrants In Transit, Margaret S. Port

Dissertations

A substantial body of research has examined the psychological impact of experiences preceding and following migration, yet comparatively little attention has been given to the psychological toll of the migration journey itself. Moreover, due to the relative novelty of the Venezuelan migrant crisis and the community’s arrival in the United States, the psychological impact of Venezuelan migrants’ unique migration experience has been underexamined. This study utilized an explanatory sequential mixed methods design to investigate the relationships between well-being, resilience, and trauma among Venezuelan migrants in Chicago, Illinois, while also exploring their lived experiences of the migration journey. Study participants (n …

What To Expect When You’Re Expecting Passenger Rail: How Central Valley Communities Are Preparing For High-Speed Rail, Josephine K. Hazelton-Bpyle, Naomi Bick

Mineta Transportation Institute

Approved by California voters in 2008, the California High-Speed Rail (CAHSR) project is a planned 800-mile rail corridor across California aimed at delivering intercity passenger rail service to the state’s largest metropolitan areas. This was the first voter-approved high-speed rail project in the United States and remains one of its most contentious. The first phase of the project’s construction is currently underway in California’s Central Valley, including many communities that initially opposed CAHSR. While supporters champion increased connectivity and the provision of environmentally sustainable transportation alternatives, critics contend the project’s benefits will not outweigh its environmental costs and economic disruptions. …

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. …

Creating A Framework For Quantifying Wildland Urban Interface (Wui) Fire Vulnerability Factors, Ryan L. Delalio

Construction Management

Wildfires have been the focus of geospatial research for decades. Climate change and increased suburban development in California are leading to an increase of Wildland Urban Interface (WUI). These zones are at higher wildfire risk, and a metric is needed to determine the most vulnerable communities to help them assess their personal wildfire risk. By analyzing current WUI wildfire vulnerability literature, the main contributing factors behind the impact of wildfires in California emerge. These factors are then paired with datasets that contain geospatial information about the factors to help us find the locations of highest vulnerability. This paper serves as …

Skip The Grid: Bringing Photovoltaic Energy To The Navajo And Hopi Nations, Emily Edmondson

Construction Management

Skip the Grid is an interdisciplinary service-learning initiative that provides off-grid solar energy systems to households within the Navajo and Hopi Nations that lack access to electricity. In March 2026, students from five academic disciplines at California Polytechnic State University partnered with industry professionals and community organizations to complete the fifth annual installation trip. The project's purpose was to improve quality of life by providing reliable access to lighting, refrigeration, and small-scale electrical power in underserved communities where traditional grid expansion is extremely costly. Preparation for the project included fundraising, procurement, technical training, and coordination among multiple stakeholders. Participants were …

Skip The Grid: Bringing Renewable Energy To Off-Grid Navajo Homes, Zion Hall

Construction Management

Skip the Grid is an interdisciplinary service-learning project that provides sustainable energy solutions to families with school-aged children living in the Navajo and Hopi Nations. In March 2026, a team of 23 students from five academic disciplines at California Polytechnic State University (Cal Poly) partnered with Heart of America, SOLV Energy, and NextPower to complete the fifth year of the program. The project's purpose was to improve quality of life and support educational success by providing reliable access to electricity, lighting, and refrigeration in underserved communities. Participants were organized into five installation teams consisting of Cal Poly students, faculty, industry …

How Modular Construction Techniques Can Be Beneficial To The Nuclear Construction Industry, Samuel Lawrence Maurer

Construction Management

Nuclear energy will soon be needed to supply sustainable and clean power to companies that work with Artificial Intelligence and Quantum Computing. Across the world, lots of large-scale nuclear power plants that have been recently constructed have had many issues, such as cost overruns, schedule delays, permitting issues, and more. The purpose of this project is to examine how modular construction, specifically in the form of Small Modular Reactors (SMRs), can positively impact the nuclear construction industry and potentially reduce some of the common issues that these large-scale nuclear power plant projects typically face. The findings suggest that the use …

International Construction In El Salvador, Daniel Roberts

Construction Management

My senior project focused on participating in international construction operations in El Salvador through hands-on involvement in the construction of a steel warehouse facility and a small residential home. The project emphasized structural concrete placement, field coordination, construction sequencing, and adaptation to regional construction practices. Work included assisting with concrete foundations, slab preparation, reinforcing steel placement, masonry work, and general site coordination activities. The experience provided practical exposure to labor productivity, material availability, scheduling challenges, and construction methods commonly used in developing regions. The project also highlighted the importance of communication, problem-solving, and flexibility when working in an international construction …

Economic Feasibility Of 3d-Printed Concrete Walls Vs. Traditional Framing Systems, David Hawk

Construction Management

The construction industry faces mounting pressure to adopt more efficient building technologies. 3D-printed concrete (3DCP) has emerged as a promising alternative to wood-frame wall systems, offering reduced labor costs, shorter schedules, and lower long-term maintenance expenses. This study evaluates the economic feasibility of 3DCP versus traditional framing across three project scales — single-family (2K SF), multifamily (20K SF), and large development (100K SF) — using mixed-methods combining quantitative cost data with qualitative industry interviews. Results indicate 3DCP becomes cost-competitive at approximately 20,000 SF of wall area, with a decisive advantage at 100K+ SF ($26–$34/SF vs. $29–$45/SF traditional). Equipment mobilization ($8–$18/SF) …

Skip The Grid: Installing Solar Systems In The Navajo Nation, Joey Massey

Construction Management

Skip the Grid is a student led interdisciplinary project that aims to bring sustainable solar energy to families in the Navajo Nation who lack reliable power at home. The 2026 Skip the Grid trip was the fifth consecutive year of the joint effort between California Polytechnic State University (Cal Poly) students across multiple departments, Heart of America (HOA), SOLV Energy, and Nextpower. Over the three working days the 5 teams installed Goal Zero Solar Systems in 50 homes on both the Navajo Nation and Hopi Reservation. These systems brough power, light, and refrigeration to families, enhancing their quality of life …

Greek Row At Cal Poly: Addressing Student Housing, Neighborhood Conflict, And Town-Gown Relations, Christopher Linn Green

Construction Management

This study evaluates whether centralized Greek housing near Cal Poly could serve as a long-term planning solution for reducing neighborhood conflict, improving student housing opportunities, and creating a more organized environment for fraternity and sorority life. The research was developed in response to ongoing concerns in San Luis Obispo involving student housing pressure, fraternity activity in residential neighborhoods, and code enforcement challenges. Two surveys were used to gather stakeholder perspectives. One survey of Cal Poly students and one survey of individuals who work in San Luis Obispo. Student responses showed strong support for a centralized Greek Row, with most respondents …

Skip The Grid: Providing Solar Energy To Navajo And Hopi Families, Derrick Huang

Construction Management

In Spring 2026, the Skip the Grid program sent its 5^th consecutive service project team to the Navajo Nation. Consisting of 4 faculty and 23 interdisciplinary students from various majors such as Construction Management, Mechanical Engineering, Environmental Management, and more, the California Polytechnic State University, San Luis Obispo (Cal Poly) team partnered with non-profit Heart of America, SOLV Energy, and NextPower to install Two 200-watt PV panels, a Yeti 1500X battery, a refrigerator, and two LED lights to families in the Navajo and Hopi Nations in Northeastern Arizona. Within 3 installation days, the Skip the Grid team was able …

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 …

Skip The Grid 2026: Off-Grid Power For Hopi And Navajo Families, Xanthus Aurelius Poole Silverstein

Construction Management

Skip the Grid is an interdisciplinary service-learning project that provides sustainable energy solutions to families with school-aged children living in the Navajo and Hopi Nations. In March 2026, a team of 23 students from five academic disciplines at California Polytechnic State University (Cal Poly) partnered with Heart of America, SOLV Energy, and NextPower to complete the fifth year of the program. The project's purpose was to improve quality of life and support educational success by providing reliable access to electricity, lighting, and refrigeration in underserved communities. Participants were organized into five installation teams consisting of Cal Poly students, faculty, industry …

Sheep Pen Improvements At City Farm Slo, Diego Eliseo Romero

Construction Management

City Farm SLO is a non-profit educational farm that focuses on creating clean produce and educational farm work environments in San Luis Obispo, California. The farm can provide its community with learning programs for the youth, hands-on experience in farming practices, and livestock care. The work was set out for this project across two quarters where we improved the existing sheep pen so that the volunteers and livestock who use the pen can enjoy the area much more comfortably and safely. The overall project scope included several improvements which all required initial designs, coordination with the farm and its volunteers, …

City Farm Slo Sheep Pen Improvements, Oscar Rocha

Construction Management

City Farm SLO is a non-profit that focuses on educating under-served and at-risk youth on health, success, and environmental responsibilities. The organization’s mission is accomplished while connecting many people from different backgrounds, which include diverse ethnic, racial, and socio-economic backgrounds. City Farm SLO promotes hands-on learning, providing opportunities for Cal Poly Construction Management students to build on the farm. This senior project consists of the construction of a 50 cubic yards sheep hill, vehicle access gates, side entry gate, front catch pen, and back corral fencing. Outside of the field construction, there was extensive planning to coordinate with the farm’s …

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 …

The Effect Of Music On Construction Labor Productivity, Ayush Khare

Construction Management

Every day the construction industry is looking for ways to improve labor productivity, jobsite morale, and overall project efficiency. Contractors often focus on larger strategies such as scheduling, manpower planning, equipment selection, and material coordination to help projects stay on time and within budget. However, smaller jobsite conditions can also affect how workers perform throughout the day. Music is one of these conditions. On many construction sites, music is already used informally by laborers while they complete physical and repetitive tasks. Even though music is common in construction culture, its effect on productivity and morale is not often measured or …