Digital Commons Network^™

Protecting The Caed Shop Equipment Yard, Chloe K. Stevens

Construction Management

Anytime a construction project is considered, there is a lengthy process that happens before breaking ground. It is important to consider the environment around the project, the intended purpose and use of the space, and the materials, time, and budget needed to develop it. If you do not take these things into consideration correctly, it will negatively impact the functionality and the efficiency of both the use and the construction process. This project consists of creating a pre-construction plan for building out a weather protective and space efficient enclosure at the College of Architectural and Environmental Design Shop Yard. The …

Summer Construction Bootcamp Building Activities, Ashley Leeann Isla

Construction Management

This paper outlines the trade-specific building activities that will take place at Cal Poly’s Summer Construction Bootcamp in Summer, 2022. The four construction trades that will be highlighted at the camp are concrete, carpentry, sheet metal, and plumbing. During each day, campers will build a small project that aligns with each highlighted construction trade. During the concrete day, campers will create stepping stones and perform a cylinder break test; during carpentry, campers will compete in a wall framing exercise; for sheet metal, campers will construct sheet metal roses; and for plumbing, they will make copper pipe “CPs.” This paper describes …

Campus Improvement Cm460 Manual To Improve Project Based Success, John C. Palmer

Construction Management

This Senior project research will critically assess the process for campus improvement on the Cal Poly Campus. The purpose of this research is providing a final deliverable that is a usable document for future students with the intention of creating a campus improvement project. The project includes the necessary resources such as campus facility contacts, permitting process explanation, the documentation process for preconstruction, funding opportunities and the expected delays to create a realistic plan. The document is created as a manual for Construction Management undergraduates in hopes of encouraging future students to create a project-based campus-improvement plan that is more …

Development Of A Conceptual Design, Estimate, & Schedule For Cal Poly Track & Field Hurdle Shed, Jonathan Chagnon

Construction Management

This paper details the processes completed to produce the conceptual design, estimate, and schedule for a track and field hurdle shed at the Cal Poly Track facility. The main objective for this project was to create a conceptual idea for the track team that would make use of the current open space at the facility and create more storage space for current and future equipment obtained by the program. By completing this project, the track team would be able to receive a design that would allow them to push the concept forward as possible, an estimate that would give the …

Punnett Squares Or Protein Production? The Expert–Novice Divide For Conceptions Of Genes And Gene Expression, Dina L. Newman, Aeowynn Coakley, Aidan Link, Korinne Mills, L. Kate Wright

Faculty Research, Scholarly, and Creative Activity

Concepts of molecular biology and genetics are difficult for many biology undergraduate students to master yet are crucial for deep understanding of how life works. By asking students to draw their ideas, we attempted to uncover the mental models about genes and gene expression held by biology students (n = 23) and experts (n = 18) using semistructured interviews. A large divide was identified between novice and expert conceptions. While experts typically drew box-and-line representations and thought about genes as regions of DNA that were used to encode products, students typically drew whole chromosomes rather than focusing on gene structure …

Robo-Ump: A Study Of The Prospective Impact Of Automated Strike Zone Use In Major League Baseball Games From The Perspective Of Broadcasters And Media, Bob Greene

College of Journalism and Mass Communications: Theses

A qualitative analysis of the Major League Baseball industry’s perspective on the use of technology within the game, specifically the incorporation of an automated strike zone in place of traditional umpires, through targeted survey results from current MLB broadcasters and journalists or media members. Evidence from the research suggests that though those who are in favor of umpires being replaced by technology within the game, at least in some fashion, there are concerns that the technology in place is currently ready to provide the type of experience desired for MLB play when it comes ruling on balls and strikes with …

Reflections On Teaching Against White Supremacy During A Time Of Social Rupture And Transformation, Erica Fonesca, Stéphanie Wahab

School of Social Work Faculty Publications and Presentations

Social Justice and Social Work is a foundational course required for all social work students in the master’s of social work program at Portland State University. Although the course has long focused on interrupting oppressions including White supremacy, teaching the course during the fall of 2020 required a nimble dance between our familiar modes of teaching and the need for spontaneous adaptation and creativity. The unique landscape for this course included teaching the course remotely (Zoom), inside a university embattled around the arming of its security force (that killed a Black man in 2018), in a city targeted by an …

Voltage Controlled Néel Vector Rotation In Zero Magnetic Field, Ather Mahmood, Will Echtenkamp, Mike Street, Jun Lei Wang, Shi Cao, Takashi Komesu, Peter Dowben, Pratyush Buragohain, Haidong Lu, Alexei Gruverman, Arun Parthasarathy, Shaloo Rakheja, Christian Binek

Peter Dowben Publications

Multi-functional thin films of boron (B) doped Cr₂O₃ exhibit voltage-controlled and nonvolatile Néel vector reorientation in the absence of an applied magnetic field, H. Toggling of antiferromagnetic states is demonstrated in prototype device structures at CMOS compatible temperatures between 300 and 400 K. The boundary magnetization associated with the Néel vector orientation serves as state variable which is read via magnetoresistive detection in a Pt Hall bar adjacent to the B:Cr₂O₃ film. Switching of the Hall voltage between zero and non-zero values implies Néel vector rotation by 90 degrees. Combined magnetometry, spin resolved inverse …

Agent Based Modeling Of The Spread Of Social Unrest Based On Infectious Disease Spread Model, Anup Adhikari

School of Computing: Dissertations, Theses, and Student Research

Social unrest activities are the tools for people to show dissatisfaction, and often people are motivated by similar unrest activities in another region. This causes a spread of unrest activities across space and time. In this thesis, we model the spread of social unrest across time and space. The underlying novel methodology is to model the regions as agents that transition from one state to another based on changes in their environment. The methodology involves (1) creating a region vector for each agent based on socio-demographic, cultural, economic, infrastructural, geographic, and environmental (SCEIGE) factors, (2) formulating neighborhood distance function to …

Effect Of 3 Days Of Oral Azithromycin On Young Children With Acute Diarrhea In Low-Resource Settings: A Randomized Clinical Trial, Antibiotics For Children With Diarrhea (Abcd) Study Group, Tahmeed Ahmed, Farah Naz Qamar, Mohammad Tahir Yousafzai, Shahida Qureshi, Sadia Shakoor, Rozina Thobani, Aneeta Hotwani, Furqan Kabir, Jan Mohammed

Department of Paediatrics and Child Health

Importance: World Health Organization (WHO) guidelines do not recommend routine antibiotic use for children with acute watery diarrhea. However, recent studies suggest that a significant proportion of such episodes have a bacterial cause and are associated with mortality and growth impairment, especially among children at high risk of diarrhea-associated mortality. Expanding antibiotic use among dehydrated or undernourished children may reduce diarrhea-associated mortality and improve growth.
Objective: To determine whether the addition of azithromycin to standard case management of acute nonbloody watery diarrhea for children aged 2 to 23 months who are dehydrated or undernourished could reduce mortality and improve linear …

Trump, Bolsonaro, And The Framing Of The Covid-19 Crisis: How Political Institutions Shaped Presidential Strategies, Daniel Beland, Philip Rocco, Catarina Ianni Segatto, Alex Waddan

Political Science Faculty Research and Publications

Background and Purpose:

Asymmetry during walking may be explained by impaired interlimb coordination. We examined these associations: (1) propulsive symmetry with interlimb coordination during walking, (2) work symmetry with interlimb coordination during pedaling, and (3) work symmetry and interlimb coordination with clinical impairment.

Methods:

Nineteen individuals with chronic stroke and 15 controls performed bilateral, lower limb pedaling with a conventional device and a device with a bisected crank and upstroke assistance. Individuals with stroke walked on a split-belt treadmill. Measures of symmetry (%Propulsion_walk, %Work_ped) and interlimb phase coordination index (PCI_walk, PCI_ped) were …

Better Safe Than Sorry? Examining The Effectiveness Of Defensive Impression Management And Supplication Techniques In Attracting Minority Applicants To Public Safety Careers, Temitayo Opeyemi Lawal

Theses and Dissertations

The recent media coverage of fatal interactions between police officers and unarmed Black citizens has led to increased calls for law enforcement agencies to diversify their departments. However, many agencies struggle to attract qualified minority candidates due to the negative history between law enforcement and minority communities. This study examined whether the use targeted defensive impression management techniques, such as apologizing for past transgressions, and supplicative recruiting messages can influence attraction and job pursuit intentions for minority applicants. This study also explored whether applicant perceptions of an organization’s sincerity and value of diversity mediates the relationship between diversity recruiting messages …

Reflections On The Phoenician Alphabet: Property And Its Defense In The Origin And Order Of The Letters (Draft #3), Gerald Leonard Cohen

Arts, Languages and Philosophy Faculty Research & Creative Works

No abstract provided.

Impact Of Pank1 Deletion On Mitochondrial Acetylation And Cardiac Function During Pressure Overload., Timothy N. Audam

Electronic Theses and Dissertations

Recent studies have associated elevated protein acetylation levels with heart failure in humans. Although mechanisms promoting elevated acetylation levels are not fully known, excess acetyl-CoA may drive enzyme-independent acetylation of cardiac proteins. Accumulation of acetyl-CoA depends on the availability of sufficient CoA, whose production is regulated by pantothenate kinases in the CoA biosynthetic pathway. We show that cardiac proteins are hyperacetylated during heart failure in humans and tested in mice whether limiting CoA abundance would improve ventricular remodeling during pressure overload-induced hypertrophy. We limited cardiac CoA levels by deleting the rate-limiting enzyme in CoA biosynthesis, Pank1 (one of three PANK-encoding …

Investigations Of Potential Mechanisms Underlying Spinal Cord Injury-Induced Polyuria., Jason H. Gumbel

Electronic Theses and Dissertations

Spinal cord injury (SCI) results in neurological impairments including motor, sensory, and autonomic dysfunction. These neurological deficits result in a litany of complications apart from muscular paralysis, including bladder, bowel, cardiovascular, and sexual function. SCI-induced polyuria (the overproduction/passage of urine) remains understudied, and therefore mechanisms behind it are largely unknown and require extensive investigation for potential targeted therapies to improve quality of life. The objective of this dissertation was to investigate potential mechanisms of SCI-induced polyuria and explore potential therapies to improve quality of life in the SCI population. Metabolic cages, Western blot, enzyme-linked immunoassay, and immunostaining were first used …

Towards Long Term Colloid Suspension In A Vertically Rotated System., Md Mahmudur Rahman

Electronic Theses and Dissertations

Within a colloidal suspension gravity may compromise the observation of governing physical interactions, especially those that are weak and/or take significant time to develop. Conducting the experiment in a long-term microgravity environment is a viable option to negate gravitational effects, though significant resources are required to do so. While it may not be possible to simulate long-term microgravity terrestrially, particles can resist quick sedimentation in a confined suspension system rotating vertically with appropriate rotation speed. The goal of the investigation is to demonstrate the existence of long-term particle suspension regime for a certain colloidal suspension while characterizing colloidal behavior due …

The Role Of Sphingolipids In Aki And The Progression To Ckd: Potential Therapuetic Targets., Nicholas A. Hoffman

Electronic Theses and Dissertations

Acute Kidney Injury (AKI) is most simply defined as a rapid decline in kidney function over a period of hours to days. There is currently a lack of effective treatment options for patients with AKI, highlighting the need to identify new therapeutic targets. Sphingolipids play a number of roles in different models of AKI, suggesting they could be promising future targets for treating kidney injury. Specifically, sphingosine-1-phosphate (S1P) and its receptors (S1PRs) have been implicated in numerous inflammatory disorders and models of AKI. The purpose of this review is to better characterize the role of S1P receptors in models of …

Local Feature Selection For Multiple Instance Learning With Applications., Aliasghar Shahrjooihaghighi

Electronic Theses and Dissertations

Feature selection is a data processing approach that has been successfully and effectively used in developing machine learning algorithms for various applications. It has been proven to effectively reduce the dimensionality of the data and increase the accuracy and interpretability of machine learning algorithms. Conventional feature selection algorithms assume that there is an optimal global subset of features for the whole sample space. Thus, only one global subset of relevant features is learned. An alternative approach is based on the concept of Local Feature Selection (LFS), where each training sample can have its own subset of relevant features. Multiple Instance …

An Analysis Of Taste Neuron Morphological Variability: Influences Of Neuron Type And Plasticity., Lisa Christina Ohman

Electronic Theses and Dissertations

Taste neurons are functionally and molecularly diverse, but their morphological diversity was, until recently, completely unexplored. Taste neurons were considered relay cells, communicating information from taste-transducing cells to the brain without variation in morphology. Instead, individual taste neurons are tremendously morphologically variable. To determine how differences in branching relate to the number and types of taste-transducing cells providing neuronal input, I combined sparse cell genetic labeling with a whole-mount immunohistochemistry and analysis workflow. I found that the maximum number of taste-transducing cells capable of providing convergent input onto individual gustatory neurons varied with a range of 1-22 taste-transducing cells. Consistently, …

Literacy Abilities Of Children And Adolescents With Williams Syndrome., Caroline Greiner De Magalhaes

Electronic Theses and Dissertations

In this dissertation I report findings from two studies of the literacy abilities of children with Williams syndrome (WS), a genetic disorder associated with intellectual disability. I had two overarching goals: 1) evaluate the applicability of theories of reading and spelling acquisition developed based on typically developing children to children with WS; and 2) provide results that would inform the development of targeted assessments and interventions. In Study 1, individual differences in phonological awareness, visual spatial perception, vocabulary, overall intellectual abilities, and reading instruction approach (systematic phonics vs. other approaches) for sixty-nine 6 – 7-year-olds (most of whom were in …

The Impact Of Statin Use On Outcomes Of Diabetic Adult Patients Hospitalized For Community Acquired Pneumonia., Joel Lanceta

Electronic Theses and Dissertations

BACKGROUND: Statins, a class of drugs that treat hyperlipidemia, may have an immunosuppressive effect for patients with community acquired pneumonia (CAP). Retrospective and in vitro studies have suggested an immunomodulatory, antioxidative and anticoagulant effects from statin use in patients with Type 2 Diabetes Mellitus (T2DM) hospitalized for CAP. Prospective studies that have tested any effect of statin therapy on patients with T2DM and CAP have not been found literature. To date, prospective studies showing of the effects statin therapy may have on T2DM patients hospitalized for CAP are not available. METHODS: This dissertation is a secondary analysis using deidentified data …

Collaborative Human-Machine Interfaces For Mobile Manipulators., Shamsudeen Olawale Abubakar

Electronic Theses and Dissertations

The use of mobile manipulators in service industries as both agents in physical Human Robot Interaction (pHRI) and for social interactions has been on the increase in recent times due to necessities like compensating for workforce shortages and enabling safer and more efficient operations amongst other reasons. Collaborative robots, or co-bots, are robots that are developed for use with human interaction through direct contact or close proximity in a shared space with the human users. The work presented in this dissertation focuses on the design, implementation and analysis of components for the next-generation collaborative human machine interfaces (CHMI) needed for …

Visualizing Anhydrobiosis: Liquid-Liquid Phase Separation, Membraneless Organelles, And Cellular Reorganization., Clinton J. Belott

Electronic Theses and Dissertations

Water is an integral and necessary component of life. It is then, exceedingly remarkable that some species are capable of surviving virtually complete water loss for extended periods of time. Several decades of intense research into anhydrobiosis, or life without water, have given significant insights into the molecular mechanisms governing this phenomenon. Anhydrobiosis-related intrinsically disordered (ARID) proteins have been demonstrated to be critically important for desiccation tolerance in many anhydrobiotic species and exhibit a considerably wide range of protective properties that include membrane stabilization, reinforcing bioglass formation, and protein stabilization. This dissertation begins with cellular dielectrophoresis suggesting that two ARID …

First Principle Studies Of The Effects Of Alkali-Metal Intercalation On Structural Transition From Black To Blue Phosphorene And The Adsorption Of N2h4 On Ws2 Layers., Md Rajib Khan Musa

Electronic Theses and Dissertations

A comprehensive density functional theory calculation has been conducted to seek a potential structural transition from black to blue phosphorene layers, with a focus on the roles played by alkali-metal intercalation in black phosphorene/phosphorus. This study reveals that at sufficiently high Li concentration and specific, well-defined configurations, a phase transition from black to blue phosphorene can take place. The Li atoms intercalated in black phosphorene could act as a “catalyst” in the“reactive region” of the lone pair of P atoms, leading to a P-P bond breaking and, subsequently, a local structural transformation from an orthorhombic lattice to an assembly of …

Digital Design And Thermomechanical Process Simulation For 3d Printing With Abs And Soyhull Fibers Reinforced Abs Composites., Saleh Khanjar

Electronic Theses and Dissertations

Recent demonstrations with fused filament fabrication (FFF) 3D printing have shown to produce prototypes as well as production components. Additionally, due to the FFF process platforms being low-cost and readily available there has been a high-demand to produce on-demand parts for various applications in automotive, in-space manufacturing and electronic industries. However, current limitations such as limited availability of advanced composites materials, and guidelines for design-for-manufacturing make the process prone to trial-and-error experiments both at the materials development, product design and manufacturing stage. In this work, new thermomechanical process simulations platform, Digimat-AM has been evaluated to address and demonstrate digital design …

Black Codes Re-Envisioned: The Dred Scott Majority Opinion As An Antiblack Performative Speech Act., Tiffany Dillard-Knox

Electronic Theses and Dissertations

This dissertation is a discursive analysis of the decision in the Dred Scott v Sandford, 1857 case written by Chief Justice Roger Taney. It begins with an overview of the literature on performative speech acts, focusing on the aspects of performatives that relate to Louis Miron and Jonathan Xavier Inda’s thesis that race is a performative speech act. Breaking from their use of race as the analytic, this analysis is situated within a black/nonblack paradigm. This provides a framework that focuses on the unique ways in which the discourse of the text enacts, accumulates and renders blackness fungible. The …

Lung Nodules Identification In Ct Scans Using Multiple Instance Learning., Wiem Safta

Electronic Theses and Dissertations

Computer Aided Diagnosis (CAD) systems for lung nodules diagnosis aim to classify nodules into benign or malignant based on images obtained from diverse imaging modalities such as Computer Tomography (CT). Automated CAD systems are important in medical domain applications as they assist radiologists in the time-consuming and labor-intensive diagnosis process. However, most available methods require a large collection of nodules that are segmented and annotated by radiologists. This process is labor-intensive and hard to scale to very large datasets. More recently, some CAD systems that are based on deep learning have emerged. These algorithms do not require the nodules to …

Additive Manufacturing Using Robotic Manipulators, Fdm, And Aerosol Jet Printers., Alexander Curry

Electronic Theses and Dissertations

Additive manufacturing has created countless new opportunities for fabrication of devices in the past few years. Advances in additive manufacturing continue to change the way that many devices are fabricated by simplifying processes and often lowering cost. Fused deposition modeling (FDM) is the most common form of 3D printing. It is a well-developed process that can print various plastic materials into three-dimensional structures. This technology is used in a lot of industries for rapid prototyping and sometimes small batch manufacturing. It is very inexpensive, and a prototype can be created in a few hours, rather than days. This is useful …

An Investigation Into Energy-Material Properties Interaction In Additive Manufacturing Of Polymers., Pu Han

Electronic Theses and Dissertations

Additive manufacturing (AM), known as three-dimensional (3D) printing, is a fabrication process to build 3D objects layer by layer based on computer aided design (CAD) model or digital 3D model. Fused filament fabrication (FFF) has become a preferred method for additive manufacturing due to its cost-effectiveness and flexibility. However, the parts built using FFF process suffer from lower mechanical strength compared to that fabricated using traditional method and rough surface finish. With this motivation, this dissertation aims to develop and implement a novel in-process laser assisted technique on FFF to heal the microstructure of FFF built objects by enhancing reptation …

Hybrid Structural Health Monitoring Using Data-Driven Modal Analysis And Model-Based Bayesian Inference., Jice Zeng

Electronic Theses and Dissertations

Civil infrastructures that are valuable assets for the public and owners must be adequately and periodically maintained to guarantee safety, continuous service, and avoid economic losses. Vibration-based structural health monitoring (VBSHM) has been a significant tool to assess the structural performance of civil infrastructures over the last decades. Challenges in VBSHM exist in two aspects: operational modal analysis (OMA) and Finite element model updating (FEMU). The former aims to extract natural frequency, damping ratio, and mode shapes using vibrational data under normal operation; the latter focuses on minimizing the discrepancies between measurements and model prediction. The main impediments to real-world …