Digital Commons Network^™

4-Band Personal Eq Device, Carson Kellerman

Electrical Engineering

The device is a 4-band EQ with 3.5mm audio input and output jacks. The device has 4 adjustable EQ bands. Each of the 4 bands are adjustable via knob potentiometers, and are able to boost or cut their respective center frequencies of 150Hz, 400Hz, 2500Hz, and 10kHz from -15dB to +15dB. The device is battery powered off of 1 9V battery and is able to function for 10 hours before needing to replace the batteries. The device has a Total Harmonic Distortion of less than 1% and a Signal to Noise Ratio greater than 60dB. Overall, this device allows music …

Compressive And Flexural Tensile Strength Impacts Of Aluminum Shavings In Concrete, Ian Smith

Construction Management

Concrete is one of the most utilized construction materials around the world, but new and cutting-edge methods are constantly pushing the envelope for concrete’s applications and feasibility as a construction material. Unfortunately, concrete has a general lack of resistance to bending and stretching. Studies have shown several successful attempts to enhance the mechanical properties of concrete through implementation of various admixtures and methods. Steel is widely considered the primary material capable of reinforcing concrete. This paper evaluates concrete’s change in strength of flexural tension and compression as a result of implementing aluminum as a reinforcing agent. To determine the full …

United States Army Corps Of Engineers Info Session At California Polytechnic State University San Luis Obispo, Gabriel L. Vesneski

Construction Management

Gabriel Vesneski facilitated an Info Session on Thursday, November 2, at California Polytechnic State University, San Luis Obispo for the United States Army Corps of Engineers Sacramento District Civil Works. Three guest speakers from the Sacramento District Civil Works office presented their educational background, experience as employees for the Corps of Engineers, occupational benefits, and finally opened a question-and-answer forum for the students attending the Info Session. Upon completion of the Info Session, a survey was provided for attendees, in order to track interest in employment or internship opportunities provided by the United States Army Corps of Engineers. Finally, there …

2nd Annual Girls Build Summer Academy: Logistics And Scheduling, Matteo Cade Cuccaro

Construction Management

This paper discusses the logistics and scheduling involved for Cal Poly construction management department’s second annual Girls Build Summer Academy. The week-long academy was hosted to introduce construction related activities to 19 high school-aged girls so they could learn more about the careers available within the architecture, engineering, and construction industry, while learning skills to build individual and team projects. To achieve this goal, a full schedule was developed for each day of the camp, allowing for a variety of activities, including listening to guest speakers, completing building projects, and training to safely use tools. There were many challenges that …

San Luis Obispo Railroad Museum Accessibility Ramp, Noah Atticus Callahan

Construction Management

The San Luis Obispo’s Railroad Museum is a local organization that aims to preserve the history of the Southern Pacific Railroad and educate the community. The mission of this organization is to collect and display various historic artifacts for the public to see. This project serves to aid in the development of a 1923 boxcar into a future exhibit for the museum by creating a ramp that bridges the platform of the station to the boxcar. The ramp was constructed out of pressure treated lumber, angle iron to bind the lumber together, and hinges to allow it to fold. Both …

Artificial Intelligence Integration In Construction: A Cal Poly Curriculum Assessment, Carter James Hahn

Construction Management

In a rapidly evolving industry where AI enhances efficiency and safety, questions are being raised on whether it should be introduced in the classroom. This research project is with the intention of understanding if and how artificial intelligence should be incorporated into Cal Poly’s construction management curriculum. The research combines a literature review establishing AI's relevance in construction project management with a survey-based methodology to gauge industry perspectives. Today, the global construction market witnesses a surge in AI adoption in its planning, construction, and O&M phases. In turn, the industry has benefited from its application in mitigation of risks, improved …

The Impact Of Language And Culture On Productivity: A Recommendation To Implement An Innovative Spanish Language Track, Jordan J. Price

Construction Management

Productivity is a popular focus of construction research because of its efforts to overcome a multitude of project related challenges. This research explores the intersection of language barriers, cultural differences, and productivity in the construction industry with a focus on the impact of bilingual management. It evaluates the impact of these factors on productivity and its beneficial relationship to multilingual management on diverse construction crews. The impending retirement of 40% of the construction labor force calls for proactive initiatives to manage the demographic shift shown by the growing composition of Hispanics in the workforce. The influence of language barriers on …

Numerical Investigation Of The Wall Temperature Effects On Shock-Wave Turbulent Boundary Layer Interactions, Eli Durant

Masters Theses and Doctoral Dissertations

The shock-wave turbulent boundary layer interaction (STBLI) is an important phenomenon in many practically relevant high-speed flow applications such as re-entry vehicles, air-breathing engines, rocket nozzles, etc. STBLI occurs in supersonic flow near solid surfaces where a shock wave is generated or reflected. The complex interaction is typically characterized by boundary layer thickening, shock-induced separation, thermo-mechanical loading, and low-frequency unsteadiness. In high-speed aerospace applications, the effects of STBLI can lead to catastrophic failure during flight. For this reason, the accurate prediction of STBLI is crucial for the design of such applications. Although previous investigations have led to an improved understanding …

Observational Uncertainty For Global Drought-Pluvial Volatility, Yichan Li, Linyin Cheng, Chiyuan Miao, Zhiyong Liu

Geosciences Faculty Publications and Presentations

Droughts and pluvials have occurred in most regions in the past. However, what calls growing attention is the additive effects of these two opposite extreme events occurring in spatial-temporal proximity to one another, sometimes beyond either of the hazards individually. This study examines the likelihood of global drought-pluvial volatility which involves both meteorological drought-to-pluvial (DTP) and pluvial-to-meteorological drought transitions; meanwhile, identifies discrepancies and agreements among the widely used observations for such events, an aspect that remains currently overlooked. Globally, we find that the observation-based data sets including Global Precipitation Climatology Center (GPCC), Climate Research Unit (CRU) and ERA5 reach a …

Band Motor Crankshaft For Hydrogen Combustion Engine, Lincoln Hofer, Jacqueline Mendoza Cortes, Austin Rhee, Roze Raymond

Mechanical Engineering

This report outlines the steps in which a group of four mechanical engineers at California Polytechnic State University California, San Luis Obispo, addressed an issue brought up by Professor Roger Benham from the Materials Department. The task included developing an automated and modular testing platform for a revolutionary concept crankshaft prototype – meant for a hydrogen combustion engine - developed and produced by the sponsor: Roger Benham. A testing platform is necessary to measure the performance of the shaft design created to eventually implement this subsystem into a complete hydrogen engine design. Values being tested include geometric validation, maximum static …

Tumor Treating Fields: Narrative Review Of A Promising Treatment Modality For Cancer, Tugce Kutuk, Alonso La Rosa De Los Rios, Rupesh Kotecha, Minesh Mehta, Michael Chuong

All Publications

Background and objective: Tumor treating fields (TTFields) therapy have emerged as a potentially effective treatment for various malignancies by delivering low-intensity, intermediate-frequency electrical fields that disrupt many processes inside cells, resulting in the interruption of cell division in cancer cells. Additionally, TTFields therapy has been found to be synergistic with existing therapeutic approaches. In this review, we provide an introduction and background to the primary mechanisms of TTFields and discuss the emerging preclinical and clinical outcomes of this novel cancer treatment technology.

Methods: We performed a literature search on PubMed, ClinicalTrials.Gov, and Google Scholar using the terms 'TTFields' and 'cancer'. …

Language As The Catalyst Between The Relationship Of Subordinates' Communicative Competence And Supervisors' Communicative Behavior: A Canonical Correlation Analysis, Lindsey N. Tan

Journal of English and Applied Linguistics

Communicative competence could be understood as the ability to effectively use language in different contexts, and one of these contexts is the intricate framework of the supervisor-subordinate relationship (SSR). However, studies on SSR are mostly based on supervisors’ communicative behavior (SCB), and there is a scarcity of studies that investigate the role of subordinates’ organizational communication competence (SOCC) on SSR. Consequently, this study aims to investigate the relationship between SOCC and SCB in the SSR framework. Using the canonical correlation analysis, two sets of facets were used to analyze the relationship. The first set is the SOCC, which includes communicative …

A Novel Small Molecule Inhibitor Of P38⍺ Map Kinase Augments Cardiomyocyte Cell Cycle Entry In Response To Direct Cell Cycle Stimulation, Riham R E Abouleisa, Jessica M Miller, Ahmad Gebreil, Abou Bakr M Salama, Marc Dwenger, Hania Abdelhafez, Reham M Wahid, Adeniyi T Adewumi, Mahmoud E S Soliman, Nader E Abo-Dya, Tamer M A Mohamed

Faculty, Staff and Students Publications

Background and purpose: Myocardial infarction (MI) is the leading cause of mortality globally due in part to the limited ability of cardiomyocytes (CMs) to regenerate. Recently, we demonstrated that overexpression of four-cell cycle factors, CDK1, CDK4, cyclin B1 and cyclin D1 (4F), induced cell division in ~20% of the post-mitotic CMs overexpressed 4F. The current study aims to identify a small molecule that augments 4F-induced CM cycle induction.

Experimental approach, key results: Screening of small molecules with a potential to augment 4F-induced cell-cycle induction in 60-day-old mature human induced pluripotent cardiomyocytes (hiPS-CMs) revealed N-(4,6-Dimethylpyridin-2-yl)-4-(pyridine-4-yl)piperazine-1-carbothioamide (NDPPC), which activates cell cycle progression …

A New Method To Evaluate Pressure Distribution Using A 3d-Printed C2-C3 Cervical Spine Model With An Embedded Sensor Array, Frank Vrionis

All Publications

Cervical degenerative disc diseases such as myelopathy and radiculopathy often require conventional treatments like artificial cervical disc replacement or anterior cervical discectomy and fusion (ACDF). When designing a medical device, like the stand-alone cage, there are many design inputs to consider. However, the precise biomechanics of the force between the vertebrae and implanted devices under certain conditions require further investigation. In this study, a new method was developed to evaluate the pressure between the vertebrae and implanted devices by embedding a sensor array into a 3D-printed C2-C3 cervical spine. The 3D-printed cervical spine model was subjected to a range of …

Supporting A More Equitable Learning Environment: Implications Of Person-Centered Practices On Teacher Self-Efficacy, Angela Menchaca

Masters Theses (Archived)

No abstract provided.

Perception Of Bias In Chatgpt: Analysis Of Social Media Data, Abdullah Wahbeh, Mohammad A. Al-Ramahi, Omar El-Gayar, Ahmed El Noshokaty, Tareq Nasralah

Computer Information Systems Faculty Publications (Archived)

In this study, we aim to analyze the public perception of Twitter users with respect to the use of ChatGPT and the potential bias in its responses. Sentiment and emotion analysis were also analyzed. Analysis of 5,962 English tweets showed that Twitter users were concerned about six main types of biases, namely: political, ideological, data & algorithmic, gender, racial, cultural, and confirmation biases. Sentiment analysis showed that most of the users reflected a neutral sentiment, followed by negative and positive sentiment. Emotion analysis mainly reflected anger, disgust, and sadness with respect to bias concerns with ChatGPT use.

Static Binary Rewriting For Rop Gadget Removal, Hans Verhoeven

Masters Theses & Doctoral Dissertations

Return-Oriented Programming (ROP) is an exploitation technique that is commonly used by malicious users. It works by leveraging return statements in binaries to gain control over the execution of programs. Some mitigations for ROP include changing the binary during compilation time, rewriting the binary after compilation, and adding runtime checks to the binary. The focus of this study was rewriting the binary after compilation. Rewriting during compilation time requires end users to have access to source code, which, in most cases, they will not. Adding runtime checks adds additional overhead to the target binary.

The areas this study aimed to …

Should State Land In Southern California Be Allocated To Warehousing Goods Or Housing People? Analyzing Transportation, Climate, And Unintended Consequences Of Supply Chain Solutions, Tianjun Lu, Jian-Yu Ke, Azure Fisher, Mahmoud Salari, Patricia Valladolid, Fynnwin Prager

Mineta Transportation Institute

In response to COVID-19 pandemic supply chain issues, the State of California issued Executive Order (EO) N-19-21 to use state land to increase warehousing capacity. This highlights a land-use paradox between economic and environmental goals: adding warehouse capacity increases climate pollution and traffic congestion around the ports and warehouses, while there is a deficit of affordable housing and high homeless rates in port-adjacent underserved communities. This study aims to inform regional policymakers and community stakeholders about these trade-offs by identifying current and future supply of and demand for warehousing and housing in Southern California through 2040. The study uses statistical …

Influence Of Pavement Conditions On Commercial Motor Vehicle Crashes, Stephen Arhin, Babin Manandhar, Adam Gatiba

Mineta Transportation Institute

Commercial motor vehicle (CMV) safety is a major concern in the United States, including the District of Columbia (DC), where CMVs make up 15% of traffic. This research uses a comprehensive approach, combining statistical analysis and machine learning techniques, to investigate the impact of road pavement conditions on CMV accidents. The study integrates traffic crash data from the Traffic Accident Reporting and Analysis Systems Version 2.0 (TARAS2) database with pavement condition data provided by the District Department of Transportation (DDOT). Data spanning from 2016 to 2020 was collected and analyzed, focusing on CMV routes in DC. The analysis employs binary …

Understanding The Effect Of Pervasive Events On Vehicle Travel Time Patterns, Chirag Akbari, Ninad Gore, Srinivas S. Pulugurtha

Mineta Transportation Institute

The COVID-19 pandemic has disrupted daily activities and travel patterns, affecting personal and commercial trips. This study investigates the effect of different stages of the pandemic on travel time patterns. Eighty-six geographically distributed links (sections of road) in Mecklenburg County and Buncombe County, North Carolina, were selected for analysis. The selected links accounted for the variation in road geometry, land use, and speed limit. Travel time data for three years (i.e., 2019, 2020, and 2021) were extracted from a private data source at 5-min intervals. Travel time reliability (TTR) and travel time variability (TTV) are estimated for different phases of …

Cycling Past 50: A Closer Look Into The World Of Older Cyclists, Year 4 Survey, Carol Kachadoorian

Mineta Transportation Institute

This document reports on approximately 5,000 responses to a North American survey of older adults who cycle. The survey, open from August 2021 through March 2022, included questions that captured a person’s cycling over their life course, as well as their current cycling styles, habits, and preferences. Responses reflect the impact of various factors on an older adult’s cycling habits with respect to their ability and agility and their expectation to continue cycling. The survey asked about falls and near misses in the past-year coding fall descriptions into six categories and sorting them by the respondent’s gender and age. The …

A Control Study Analysis Application Of Unoccupied Aerial Systems (Drones) To Monitor Eutrophication, Chrystal Mata

Water Resources Science and Technology Theses and Graduate Research Reports (Archived)

Unmanned Aircraft systems (UAS) can offer a valuable perspective for detecting and monitoring for eutrophication in bodies of water by providing high-resolution images and data assignments for algal blooms and nutrient levels. Eutrophication, the process by which water bodies become enriched with nutrients, has emerged as a critical factor in evaluating and maintaining water quality. In this study, we use DJI Inspire Pro 1 equipped with a Zenmuse X3 camera, attached with a Parrot Sequoia multispectral sensor was used to in conjunction with algorithms to retrieve Chlorophyll parameters for monitoring eutrophication. Although water quality parameters such as pH, nitrate, phosphate, …

Qasm-To-Hls: A Framework For Accelerating Quantum Circuit Emulation On High-Performance Reconfigurable Computers, Anshul Maurya

Theses and Dissertations

High-performance reconfigurable computers (HPRCs) make use of Field-Programmable Gate Arrays (FPGAs) for efficient emulation of quantum algorithms. Generally, algorithm-specific architectures are implemented on the FPGAs and there is very little flexibility. Moreover, mapping a quantum algorithm onto its equivalent FPGA emulation architecture is challenging. In this work, we present an automation framework for converting quantum circuits to their equivalent FPGA emulation architectures. The framework processes quantum circuits represented in Quantum Assembly Language (QASM) and derives high-level descriptions of the hardware emulation architectures for High-Level Synthesis (HLS) on HPRCs. The framework generates the code for a heterogeneous architecture consisting of a …

The Bridge Newsletter Winter 2023, Missouri University Of Science And Technology

The Bridge Newsletter

-Gary White’s work on world water crisis

-Yan teams up for renewable infrastructure grant

-Sustainable futures: New life for unusable waste

-‘Engineering our Future’ by ASCE president, alumna

Investigating Programmer Bias Transfer To Computer Tasks Among Hispanic Csci/Cmpe Students In A Minority-Serving Institution, Ana Cecilia Sánchez Ramos

Theses and Dissertations

Algorithm-driven systems are increasingly being used across a variety of settings (Center for Democracy and Technology, 2020; O’Neil, 2017; Sauppé and Mutlu, 2015). However, many everyday technologies are imbued with racial biases that unfairly discriminate against racially marginalized groups (Hankerson et al, 2016; Crawford, 2016; O’Neil, 2017). While sources of bias like the unintended overrepresentation of elements in an algorithm’s dataset have been well researched (Hankerson et. al, 2016; Lee, 2015), the transfer of personal prejudices onto a system remains understudied. Here I address this issue and draw from Sociological literature on organizational theory, assimilation, and colorblind ideology to develop …

Perspectives On Educational Technology Integration From District And School Leaders Before, During, And After The Lifting Of The Covid-19 Pandemic Restrictions, Alma Delia Cardenas-Rubio

Theses and Dissertations

The integration of educational technology is pivotal in enhancing classroom instruction. School administrators must possess a clear vision and the necessary skills to leverage emerging technologies effectively (Yu & Prince, 2016). This mixed methods research study explores trends, challenges, and experiences related to educational technology leadership throughout the COVID-19 pandemic. Employing an autoethnographic approach and survey data, the study aligns with the Future Ready Framework's seven interconnected components: curriculum, instruction, and assessment; personalized professional learning; budget and resources; use of space and time; robust infrastructures; data and privacy; and community partnerships. The narrative provides insights into a …

2nd Annual Girls Build Summer Academy: Apprentice Ii Service Project, Angeline Witt

Construction Management

Cal Poly’s construction management department hosted the second annual Girls Build Summer Academy in July 2023. This paper highlights the service work project that the three returning academy participants completed during the week-long day camp. The academy’s goal was to provide high school-aged girls the opportunity to learn about the various career paths in the construction industry while emphasizing skilled trade opportunities including concrete, framing, drywall, electrical, and equipment operators. The girls worked to enrich their construction knowledge and grow their skills with hands-on building activities. By the end of the week, each girl had gained the skills and confidence …

Vegetation And Its Effectiveness In Replacing Traditional Cooling Systems, Bryce Isaiah Trump

Construction Management

This project aimed to analyze if vegetation is effective in replacing traditional cooling systems, when utilized as green roofs and walls. It serves to provide information to the construction industry, designers, architects, and homeowners. Information gathered through a field experiment will be used to give quantitative data on if vegetation is effective and practical in replacing traditional cooling systems in buildings and homes. The basis for the idea of this project stems from two main courses in the Construction Management program, those courses being Principles of Environmental Design, and Sustainability and the Built Environment. The stated courses introduce the idea …

Highlighting The Key Differences In Project Management When Using Mass Timber: Case Study, Kevin Krueger

Construction Management

Mass Timber or Cross Laminated Timber (CLT) is structurally engineered wood designed to be used as the structural components of a building. As the Construction Industry shifts toward using more renewable materials, mass timber becomes more relevant. This paper presents a comprehensive case study focusing on the construction process innovations implemented in a recent mass timber project located in San Francisco. The project involves the construction of a secure facility for a prominent biotechnology company. This research aims to learn the innovative techniques and strategies that contributed to the successful completion of this unique project. Key stakeholders, including the project …

Paso Robles Police Department Shooting Range Stairs, Emily Ann Andres

Construction Management

The Paso Robles Police Department has a shooting range located just outside the Paso Robles Airport. The range is a newer facility that is used for training by the Paso Robles Police, as well as departments from surrounding cities. The flagpole for the range, located at the top of the hill, was inaccessible due to the brush overgrowth, gopher holes, and uneven terrain. Thus, the department needed a new staircase to improve accessibility to the flagpole so the red flag can be flown while the shooting range is in use. With many neighboring facilities, such as the remote-control plane club, …