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Articles 331 - 360 of 40054
Full-Text Articles in Entire DC Network
Skip The Grid: Bringing Solar Energy To The Navajo Nation, Makaela L. Zavala
Skip The Grid: Bringing Solar Energy To The Navajo Nation, Makaela L. Zavala
Construction Management
Skip the Grid is an interdisciplinary service project in which California Polytechnic State University (Cal Poly) students partner with Heart of America and SOLV Energy to install off-grid solar systems for families in the Navajo Nation and Hopi Reservation. The project aims to address energy inequity by providing reliable electricity for lighting, refrigeration, and essential daily needs. This paper focuses on the communications and logistics planning required to support a large-scale service project involving over twenty students and multiple partner organizations. The methodology included coordinating travel, organizing team assignments, managing documentation, and maintaining communication throughout the trip. The project resulted …
Skip The Grid: Bringing Power To Navajo Nation Through Off-Grid Solar Systems, Maggie Papaharisi
Skip The Grid: Bringing Power To Navajo Nation Through Off-Grid Solar Systems, Maggie Papaharisi
Construction Management
Skip the Grid is an interdisciplinary service-learning project where California Polytechnic State University (Cal Poly) students partner with Heart of America and SOLV Energy to install off-grid solar systems for families in the Navajo Nation who do not have reliable access to electricity. Due to the remote location and high cost of infrastructure, a significant portion of households lack basic utilities, making access to lighting, refrigeration, and power difficult. During the 2026 project, a team of students from multiple disciplines spent several months preparing before traveling to Arizona, where installation teams completed solar systems in 50 homes over three days. …
Modular Student Housing At California Polytechnic State University, San Luis Obispo: A Case Study On Efficiency And Implementation, Michelle Lara
Modular Student Housing At California Polytechnic State University, San Luis Obispo: A Case Study On Efficiency And Implementation, Michelle Lara
Construction Management
As universities continue searching for ways to deliver student housing more efficiently, volumetric modular construction has emerged as a potential alternative to traditional construction methods. However, there is limited documentation on how modular student housing projects are implemented on active California State University campuses. This study examines the implementation of volumetric modular construction on the California Polytechnic State University Student Housing Project through a qualitative case study approach. Data was collected through interviews with project personnel involved in construction management, project engineering, and fire and life safety compliance, along with a review of existing literature. While the project demonstrated several …
Can Generative Ai Make Farming Decisions? Current Status And Future Pathways: A Case Study In Row Crop Production With Chatgpt, Nipuna Chamara, Yufeng Ge, Joe Luck, Yu Pan, Saleh Taghvaeian, Cory Walters, Christopher Proctor, Daran Rudnick, Daren Redfearn
Can Generative Ai Make Farming Decisions? Current Status And Future Pathways: A Case Study In Row Crop Production With Chatgpt, Nipuna Chamara, Yufeng Ge, Joe Luck, Yu Pan, Saleh Taghvaeian, Cory Walters, Christopher Proctor, Daran Rudnick, Daren Redfearn
Department of Agricultural and Biological Systems Engineering: Faculty Publications
The agricultural decision-making process is experience-based, knowledge-dependent, time-sensitive, complex, and driven by historical data. Planting, fertilization, irrigation, and chemigation are key categories in farm decision-making, and currently there is no one-shot decision-support tool that covers all these activities. Generative Artificial Intelligence (AI) models are more advanced than traditional machine learning and deep learning models. These models have been trained on vast amounts of data from the internet, allowing them to accept unstructured data in various forms and generate human-like text, solutions to problems, and scenario predictions. Given this capability, we became interested in exploring the potential of generative AI in …
An Exploratory Latent Segmentation Approach To Account For Temporally Shifting Parameters In Driver Injury-Severity Models, Tanmoy Bhowmik, Shahrior Pervaz, Fred Mannering, Naveen Eluru
An Exploratory Latent Segmentation Approach To Account For Temporally Shifting Parameters In Driver Injury-Severity Models, Tanmoy Bhowmik, Shahrior Pervaz, Fred Mannering, Naveen Eluru
Civil and Environmental Engineering Faculty Publications and Presentations
Temporally shifting parameters in crash severity modeling is a well-documented phenomenon, with growing evidence suggesting that the influence of explanatory variables changes over time due to shifts in driver behavior, vehicle technology, and roadway conditions. Many studies have examined this issue by comparing the temporal stability of adjacent-year data using a variety of modeling frameworks that have often assumed a homogenous effect of explanatory variables across the entire crash population. The current research effort departs from past work in two ways. First, it compares data separated by multiple years (instead of comparing adjacent years), and second, it tests the homogeneous …
Characterization Of The Thermally Driven Red Hue Effect In Coated And Uncoated Concrete Systems: Implications For Post-Fire Assessment In Wildland Urban Interface Communities, Juan C. Palominos Jr
Characterization Of The Thermally Driven Red Hue Effect In Coated And Uncoated Concrete Systems: Implications For Post-Fire Assessment In Wildland Urban Interface Communities, Juan C. Palominos Jr
Master's Theses
The increasing frequency and intensity of Wildland-Urban Interface (WUI) wildfires, such as the destructive 2025 Pacific Palisades Fire that destroyed over 6,000 structures, have underscored the urgent need for rapid post-fire safety assessment methodologies. This study sought to quantitatively characterize the Thermally Driven Red Hue Effect (TRHE), a unique, irreversible color shift observed in architectural coatings and concrete substrates, to determine its reliability as a permanent visual record of thermal exposure. Concrete substrates were formulated with three distinct coarse aggregates: gold granite (14.7% Fe), red cinder (22.4% Fe), and green rock (33.6% Fe) and coated with a 20 PVC waterborne …
Analysis And Design Of Auger Cast Piles With Isolation Casing, Zachary Lindsay
Analysis And Design Of Auger Cast Piles With Isolation Casing, Zachary Lindsay
Master's Theses
This research addresses the analysis and design of double cased piles. Bay Area Rapid Transit (BART) runs a large rail system both above and below ground that connects the entire Bay Area. BART requires that all new constructions avoid transmitting axial load to their tunnels from adjacent piles. If piles fall within the zone of influence, builders must install double cased piles. Double casing is where there is an extra casing around the pile, with an air gap between them. The air gap prevents load from transferring to the outer casing. The length of this casing is called the isolation …
Synthesis And Characterization Of A Graphene Oxide-Zif-8 Composite For Enhanced Post-Combustion Carbon Capture, Sydney Cooper
Synthesis And Characterization Of A Graphene Oxide-Zif-8 Composite For Enhanced Post-Combustion Carbon Capture, Sydney Cooper
Master's Theses
Carbon dioxide (CO₂) emissions from fossil fuel combustion are a major contributor to climate change and its associated environmental impacts. The current standard technology for post-combustion carbon capture, aqueous amine scrubbing, is effective but requires significant regeneration energy and has high operational costs. As a result, solid sorbents have been investigated as lower-energy alternatives. Metal-organic frameworks (MOFs) are a promising class of porous nanomaterials due to their high surface area, tunable pore structures, and adjustable surface chemistry. Among them, zeolitic imidazolate framework-8 (ZIF-8) has high thermal and chemical stability, hydrophobicity, and favorable adsorption properties. However, conventional synthesis methods often rely …
Contribution Of Slotted Web To The Cyclic Behavior Of Bare And Composite Beam-To-Hss Column Connections, Pablo Ulargui Ramos
Contribution Of Slotted Web To The Cyclic Behavior Of Bare And Composite Beam-To-Hss Column Connections, Pablo Ulargui Ramos
Master's Theses
Slotted web connections produce consistent and meaningful improvements in the cyclic behavior of bare and composite beam-to-HSS column connections. Across the eight connections investigated in this thesis, the introduction of a slotted web increased rotational capacity by approximately 7% to 37% and increased cumulative energy dissipation at the strength-degradation limit by approximately 37% to 81%. These improvements were accompanied by only a small reduction in ultimate flexural resistance on the order of 3% to 8%, attributable to the loss of web cross-section at the slot and, for the more flexible H/t = 16 columns, to increased out-of-plane deformation of the …
Recycling Aged Crumb Rubber-Modified Asphalt Pavements: A Review, Kwadwo Ampadu Boateng, Meng Wu, Dongzhao Jin, Zhanping You
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 Hybrid Mechano-Thermal Route To Synthesize Reactive Pozzolans From Clay Minerals: A Case Of Kaolinite, Oluwadamilare Charles Adesina, Bryan K. Aylas-Paredes, Brian R. Cherry, Luciano A. Gobbo, Aditya Kumar, Narayanan Neithalath
A Hybrid Mechano-Thermal Route To Synthesize Reactive Pozzolans From Clay Minerals: A Case Of Kaolinite, Oluwadamilare Charles Adesina, Bryan K. Aylas-Paredes, Brian R. Cherry, Luciano A. Gobbo, Aditya Kumar, Narayanan Neithalath
Materials Science and Engineering Faculty Research & Creative Works
Aluminosilicate resources from unconventional sources offer promising potential for developing low-carbon supplementary cementitious materials (SCMs), yet their activation typically requires energy-intensive thermal processing. Kaolinite is a geographically abundant and highly attractive precursor clay mineral to reduce the clinker factor in concrete. By integrating mechano- and thermo- chemistry sequentially in a novel hybrid mechano-thermal activation (MTA) strategy for clay mineral activation, the dehydroxylation of pure kaolinite polymorphs KGa-1b and KGa-2 for enhanced pozzolanic reactivity is unlocked at temperatures that are lower than those needed for conventional thermal activation (TA). The mechano-chemical activation (MCA) step that induces significant structural defects and disorder …
Creating A Framework For Quantifying Wildland Urban Interface (Wui) Fire Vulnerability Factors, Ryan L. Delalio
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
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
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
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
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
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
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
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
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 5th 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
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
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
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
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
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
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 …
Self-Healing Concrete In Compression With Crystalline Admixtures, Nathaniel Paul Warfield
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 …
Sheep Pen Improvements At City Farm Slo, Rylan Joseph Hickman
Sheep Pen Improvements At City Farm Slo, Rylan Joseph Hickman
Construction Management
This project took place on a non-profit community farming space called City Farm SLO which provides opportunities for local small scale independent farmers to farm and provide crops to the community. Our project provided improvements to the livestock pen that they have on the farm which is home to chickens and a flock of sheep. The main goal of this project was to provide a better living environment for the sheep including a 50 cubic yard sheep hill, a vehicle access gate, a side gate, a front catch pen, a back corral, and protective fencing for a guava tree. Within …
Hvac Ductwork Lab Series - New Curriculum, Dean Cavanna
Hvac Ductwork Lab Series - New Curriculum, Dean Cavanna
Construction Management
This senior project developed an HVAC Ductwork Lab Series to support Cal Poly Construction Management’s new mechanical coursework during the semester conversion. The main goal is to connect classroom instruction with practical fieldwork. The project addresses the need for applied learning materials that help students understand how duct design, fabrication, installation, and support affect system performance. The curriculum was created through a sequence of planning, model development, video-supported instruction, student handout design, and instructor guide preparation. The final lab series includes three activities: SimScale airflow modeling of a straight duct, direct 90-degree elbow, and curved 90-degree elbow; fabrication and connection …
Developing A Preparation Manual For The Asc Region 6 & 7 Reno Competition, Addyson Mae Demasters
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 …