Digital Commons Network^™

Capstone Review: Filament Unit Multiplexing Engine, Gal Cohen

University Honors Theses

The Filament Unit Multiplexing Engine (FUME) is a Mechanical Engineering capstone project sponsored by Portland State University's Electronic Prototyping Lab (EPL). The project addresses the need for an automated system to manage 3D printing operations. The current manual process of selecting and routing a spool of filament to one of the available 3D printers is labor-intensive and limits the efficiency of the lab's 3D printing farm. FUME aims to create a custom solution tailored for a multi-user, multi-spool, and multi-printer environment. The designed system includes key components: a spool holder, an engine, a track and shuttle system, and a funnel. …

How Different Modes Of Photosynthesis Impact Stormwater Runoff And Weed Growth On Ecoroof Trays During Early Establishment?, Michelle Hesek

University Honors Theses

Ecoroofs remove of stormwater runoff from the combined sewer system in Portland, Oregon. Reducing runoff is essential in cities considering how impervious surfaces promote flooding. A limited number of studies focus on comparing stormwater retention of ecoroof plants during their establishment period within Portland's climate. Different photosynthetic pathways in plants may impact stormwater runoff based on their water use efficiency. This study undertook a one-year study to determine the effect of plant establishment on water retention for a C4 and CAM species in six ecoroof trays. Weeds were investigated as a factor in water retention, and whether plant type within …

Climate Justice Issues, Urban Heat Island Effect, And Trees As The Solution In Portland, Oregon, Cleo Needham

University Honors Theses

Portland, Oregon, is experiencing rising temperatures caused by climate change and urban heat island effect. High heat disproportionately impacts vulnerable communities in Portland, causing harm to physical and mental health. Trees are a solution that reduces temperatures in urban environments. A strategy called 3-30-300 helps create a structure for where to place trees to help people receive the benefits. There are challenges with trees, such as the space required, the significant cost, and the time it takes to mature. Using trees as a solution can support and protect vulnerable communities in Portland, Oregon.

Modern Trail Of Tears: The Commodification Of First Foods And Medicines In Relation To Food Apartheid And Genocide Of Indigenous Peoples, Darius Mani Yaw

University Honors Theses

I am asking you to share in a cultural conversation with me. I will use different fonts in order to express my autobiographical and ethnographic Indigenous story separate from traditional academic writing This will not be a traditional thesis by any means of academic writing; this will also be a living document in a format of a cited reflection in order to continue the conversation not only through my Indigenous Research but also through community, and ideally will create everlasting solutions. However, this will be an introduction into my Indigenous writing and Indigenous voice.

I will be discussing the next …

Coercion, Conversion, Control: Techniques Utilized To Recruit And Indoctrinate New Members Into Cult Organizations, Hailey Savanna Robertson

University Honors Theses

Religious belief of some form has long been a regular part of many people's lives, but when a person’s devotion to doctrine becomes so all-encompassing that they structure their entire life around it, they may be in a cult. While the dogma may vary across groups, a cult is characterized as having extremely devoted disciples who often follow a charismatic leader and espouse extreme beliefs or practices not widely accepted by society. Members of cults commit themselves wholly to their leaders. Proving their commitment by turning over financial assets, obeying commands without question, and even severing all social ties outside …

Prochlorococcus Death By A Ubiquitous Zooplankton Filter Feeder, Avery Harman

University Honors Theses

Prochlorococcus is a globally abundant cyanobacterium that can help reveal the ecology of microorganisms in the ocean. Specifically, mortality by zooplankton such as appendicularians is globally important and Prochlorococcus can help reveal some of the choices made around feeding for this ubiquitous filter feeder. Two ecotypes of Prochlorococcus were introduced to appendicularians to determine if appendicularian feed selectively between these ecotypes. Further, a single ecotype of Prochlorococcus was fed to appendicularians over a variety of life stages to determine if retention rate changed with appendicularian life stage. My results reveal that there is no significant selection between the two Prochlorococcus …

Effects Of Intimate Partner Violence And Machismo On Pregnant Women In Mexico: A Systematic Review, Amber Casarrubias-Enriquez

University Honors Theses

This thesis aims to understand the effects of machismo and its link to intimate partner violence against pregnant women in Mexico. Machismo is a common underlying social norm in Latin America with Mexico being my target of interest. The term is defined as extreme masculinity that often contributes to gender inequalities and can have violent characteristics. Intimate partner violence is categorized as violent threats or acts against a partner and affects nearly 44% of women in Mexico (Carney et al., 2022). Barriers to help stem from shame, family expectations, and the overall violence against women in Mexico. Sadly, abuse persists …

Evaluation Of Sleep Outcomes After Traumatic Brain Injury In Children Using Questionnaires And Actigraphy, Connie Tran

University Honors Theses

Traumatic brain injuries are the result of a sudden external blunt force to the brain and can result in long-term complications or death. In pediatrics, it is the leading cause of acute and chronic sleep-wake disturbances, as well as cognitive deficits, which can lead to a reduction in the quality of life for these children. These impairments can later result in lowered performance in work and school settings or decreased psychosocial function. Currently, there is a need to determine the relationship between traumatic brain injury (TBI) and sleep. There is a need for more research on whether or not sleep-wake …

Removal As A Control Method For Trachemys Scripta Elegans And The Response Of Chrysemys Picta Bellii, Jacob Swanson

University Honors Theses

The red-eared slider is considered one of the most ubiquitous freshwater turtles globally. Several key ecological advantages and life history traits of this species jointly impact growth rates and survivorship of native freshwater turtles where sympatry occurs. Evaluation of current management actions for red-eared slider turtles is limited, resulting in a paucity of information to guide management for the species and conservation of declining native freshwater turtles. We used previously collected mark-recapture and removal sampling data from sites with sympatric populations of red-eared slider and western painted turtles. We examined the effects of control (trapping and removal) of red-eared sliders …

The Cost Of Healthy Eating, Diana Prychyna

University Honors Theses

Background: Each year in the United States, 15-20% of 1 million visits to the Emergency Department for Acute Heart Failure result in home discharge, with patients often experiencing adverse health outcomes within 30 days. The study, Get With the Guidelines in Emergency Department Patients With Heart Failure, utilized 'Self-Care Coaches' who meet participants via telehealth calls to discuss self-care maintenance after discharge as a strategy to mitigate adverse health outcomes; and offer provisions of resources, including a cookbook by the American Association for Heart Failure Nurses (AAHFN).

During telehealth calls, we observed gaps in self-care for retired older adults (62+), …

State-Sanctioned Slavery: The Political Economy Of Prison Labor, Avneet Sidhu

University Honors Theses

This thesis explores the interconnected relationship between the political institution of government and economic development with a particular focus on the United States Constitution’s role in explicitly legalizing coerced carceral labor and the direct impact this has on various economic aspects. The Thirteenth Amendment of the Constitution has long been hailed as a guiding light of freedom and justice, and yet, still to this day, it contains a paradoxical loophole that explicitly permits involuntary servitude as punishment for crime. This exemption has long been exploited in order to perpetuate a system of state-sanctioned slavery, in which incarcerated laborers are exploited …

Flattening Morrison's Beloved: The Limits Of Psychoanalysis In Literary Criticism, A Literature Review, Isaac Vanhook

University Honors Theses

Toni Morrison's Beloved was first published in 1987 and has amassed a wide range of scholarship throughout the years; with some literary scholars using psychoanalysis to suggest a reading of Beloved. Because of the volume of scholarship and Beloved's plot--dealing with a mother who represses the memory of killing her daughter, Beloved--I found it to be perfect for the scope of this project. This literature review focuses on the sometimes reductive qualities of psychoanalyzing Beloved (such as the Freudian universal psychoanalytic subject, and the 'drawbacks' of object relations theory), while also discussing some revelatory qualities via the same …

Microplastic Pollution In Stormwater: Preliminary Findings From The Oregon Coast, Jazmine Compton

University Honors Theses

Microplastics have become ubiquitous in marine environments and pose a risk to ecosystem, organismal, and human health. Stormwater runoff has been suggested to be a major contributor to marine microplastic pollution. This project aims to quantify the average concentration of microplastics in stormwater in a community on the Oregon Coast. To accomplish this, stormwater samples were collected from five sites in Cannon Beach, Oregon, and one sample was analyzed using a dissection microscope. Using this technique, the number, size, and composition of the microplastic particles were determined. The calculated concentration of microplastics in the stormwater sample was 12.21 MPs/L, and …

Student Perceptions: How Stem Students Value Belonging Interventions, Elizabeth Runkel Baez

University Honors Theses

With the prioritization of increasing Science, Technology, Engineering, and Mathematics (STEM) graduates in the United States, researchers have become increasingly interested in how to promote STEM students' sense of belonging. Sense of belonging is considered a marker of persistence in STEM. Facilitated 'belonging interventions' are one way to strengthen a sense of belonging amongst STEM students. How students respond to, value, and understand these belonging interventions is relatively understudied. In this study, focus groups were conducted with STEM students from a single university to investigate how they value an in-class belonging activity. Qualitative thematic coding of focus group responses revealed …

Health Equity In Stroke Prophylaxis For New Atrial Fibrillation In The Emergency Department, Mariam Anwar

University Honors Theses

Objective: Atrial fibrillation (AF) is the most common cardiac arrhythmia, and often, first diagnosed in the emergency department (ED). AF increases the risk of stroke, which can be decreased by 64% if the appropriate oral anticoagulation (OAC) is prescribed. However, many patients are not prescribed OAC for new AF. We investigate whether patient ethnicity, specifically Hispanic-Latino & Russian/Ukrainian, affects OAC prescription.

Method: This retrospective chart review study included patients at an academic tertiary care center and a community hospital >17 years old with a primary ED diagnosis of AF or paroxysmal AF from January 2020-2024. Patients with valvular heart disease …

Biofeedback Gaming For Substance Use Disorder, Rebecca L. Chevrel

University Honors Theses

Substance Use Disorder (SUD) and stress are often predictive of one another, bidirectionally causal, and mutually intensifying. This thesis describes the bi-directional connection between physiological stress-modulating systems and Substance Use Disorder, and explores some emerging biofeedback stress-reduction gaming technology as a potential adjunct to recovery treatments. Improving autonomic balance, often described by Heart Rate Variability, has been shown to be beneficial for physical and psychological recovery, as well as improving self-control. For this reason, regular biofeedback for stress relief could be helpful in augmenting SUD treatment and preventing relapse. This exploration found that presenting it through a gaming lens may …

Comprehensive Planning In Small Communities, Peter B. Lamont Jr.

Certified Public Manager® Applied Research

The comprehensive plan is a vital tool in any city’s toolbox. It serves first and foremost as the general guide for a city’s development. Consisting of multiple parts, history, demographics, land use planning, transportation planning, and goals and objectives, it is the plan that all other plans should relate back to. Any growth and development decisions should be reviewed through the lens of the comprehensive plan. Proper planning has many benefits, especially in small, developing communities. These benefits include promoting sustainability, fostering a sense of community, enhancing quality of life, promoting economic development and managing new growth and infill. However, …

Prevalence And Relevant Factors Of Nocturia And Its Impact On Sleep Quality In Chinese University Students, Pengchao Xu, Qifeng Dou, Cuiping Song, Huiqing Zhang, Israel Franco, Konstantinos Kamperis, Søren Rittig, Jianguo Wen

Faculty, Staff and Student Publications

The purpose of this study was to investigate the prevalence and relevant factors of nocturia and its impact on sleep quality in university students in Mainland China. A large-scale survey was conducted on 14,000 university students from 3 universities in Henan province, China by using an anonymous questionnaire. The questionnaire collected the information from the past six months. The relationships between the prevalence of nocturia and its relevant factors were evaluated. A total of 13,874 questionnaires were collected and 13,104 qualified for statistical analysis. A total of 659 students suffered from clinically relevant nocturia (CRN) (4.56% in male and 5.34% …

Evaluation Of Inner Products Of Implicitly Defined Finite Element Functions On Multiply Connected Planar Mesh Cells, Jeffrey S. Ovall, Samuel E. Reynolds

Mathematics and Statistics Faculty Publications and Presentations

In recent years, there has been significant interest in the development of finite element methods defined on meshes that include rather general polytopes and curvilinear polygons. In the present work, we provide tools necessary to employ multiply connected mesh cells in planar domains, i.e., cells with holes, in finite element computations. Our focus is efficient evaluation of the ��1��1 semi-inner product and ��2��2 inner product of implicitly defined finite element functions of the types arising in boundary element based finite element methods and virtual element methods. Such functions are defined as solutions of Poisson problems having a polynomial source term …

The Role Of Libraries In Mobilizing The Information Society Through Technology, Fedrick Olatunji Ajegbomogun Prof, Clement Ola Adekoya Mr

Library Philosophy and Practice (e-journal)

The emergence of an information society acknowledges the importance of technology as a tool for human advancement, and society is primarily driven by technology. The study employed a descriptive survey research approach. 173 librarians from university settings and public and state libraries participated in the study; samples were taken from each state in the South-west of Nigeria. The entire population was used as the sample size since the population was reasonable enough. A questionnaire was used to collect the data. This study discovered that, despite certain challenges. This study reveals that libraries actively participate in the information society by utilizing …

Mixed Uncertainty Analysis On Pumping By Peristaltic Hearts Using Dempster-Shafer Theory, Yanyan He, Nicholas A. Battista, Lindsay D. Waldrop

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

In this paper, we introduce the numerical strategy for mixed uncertainty propagation based on probability and Dempster–Shafer theories, and apply it to the computational model of peristalsis in a heart-pumping system. Specifically, the stochastic uncertainty in the system is represented with random variables while epistemic uncertainty is represented using non-probabilistic uncertain variables with belief functions. The mixed uncertainty is propagated through the system, resulting in the uncertainty in the chosen quantities of interest (QoI, such as flow volume, cost of transport and work). With the introduced numerical method, the uncertainty in the statistics of QoIs will be represented using belief …

The Forgotten Forests: Incorporating Temperate Peat-Forming Wet Woodlands As Nature-Based Solutions Into Policy And Practice, Alice M. Milner, Andy J. Baird, Scott J. Davidson, Emily R. Lines, Dan Abrahams, Crystal A.E. Ahiable, Nadia Barsoum, Marion Bryant, Emma Dear, Iain Diack, Emma Duley, Adam Noach, Thomas P. Roland, David Smedley

School of Geography, Earth and Environmental Sciences

Peat-forming wet woodlands (forested wetlands) are naturally occurring carbon-dense ecosystems that have considerable potential to form an important part of net zero woodland establishment and peatland strategies, as well as provide crucial co-benefits to restore biodiversity and regulate hydrological systems. Despite their potential, temperate peat-forming wet woodlands have been widely lost, are critically understudied and are being overlooked in land-use strategies. Unlike temperate ‘dry’ woodlands, some wet woodlands are peat forming and can store large amounts of carbon below-ground in peat in addition to the carbon in the tree biomass. The complex structure of these peat-forming wet woodlands creates high …

Inpatient Care: Why Ai Must Be Kept Out Of Hospitals, Tawfik Abedali

The University of Cincinnati Intellectual Property and Computer Law Journal

No abstract provided.

The Effect Of Family Structure On Student Achievement And Well-Being, Jonathan Schlecht

Graduate Teacher Education

The purpose of this research was to study the effect family structure has on both academic achievement and overall well-being of students. All students are affected by their family structure. Since the 1960s, there has been a continuous and significant shift away from the traditional, intact family structure of two biological parents. As of 2020, less than half of children in the United States will grow up with two continuously married parents, and single parent households have more than tripled. Family structure was split up into three different categories: two biological parents, one biological parent, and no biological parents. The …

A Blockchain-Based Reliable Federated Meta-Learning For Metaverse: A Dual Game Framework, Emna Baccour, Aiman Erbad, Amr Mohamed, Mounir Hamdi, Mohsen Guizani

Machine Learning Faculty Publications

The metaverse, envisioned as the next digital frontier for avatar-based virtual interaction, involves high-performance models. In this dynamic environment, users' tasks frequently shift, requiring fast model personalization despite limited data. This evolution consumes extensive resources and requires vast data volumes. To address this, meta-learning emerges as an invaluable tool for metaverse users, with federated meta-learning (FML), offering even more tailored solutions owing to its adaptive capabilities. However, the metaverse is characterized by users heterogeneity with diverse data structures, varied tasks, and uneven sample sizes, potentially undermining global training outcomes due to statistical difference. Given this, an urgent need arises for …

Design Of Tiny Contrastive Learning Network With Noise Tolerance For Unauthorized Device Identification In Internet Of Uavs, Tiantian Zhang, Dongyang Xu, Osama Alfarraj, Keping Yu, Mohsen Guizani, Joel J.P.C. Rodrigues

Machine Learning Faculty Publications

Artificial intelligence enhanced Internet of unmanned aerial vehicles (UAVs) is a promising network to achieve the complicated vehicular tasks and construct intelligent communication networks. One of the critical tasks is to guarantee a secure network access while achieving tradeoff between accuracy and latency through lightweight deployment on resource-limited and hardware-constrained UAVs. To address this issue, a novel noise-tolerant radio frequency fingerprinting (NT-RFF) based on tiny machine learning (TinyML) scheme is proposed, which amalgamates contrastive learning and data augmentation, aiming to improve the generalization ability of unauthorized device identification (UDI). Particularly, we first exploit the augmentation technique to enhance the legitimate …

Miradas Bioéticas: Antología De Reflexiones Para La Educación, Luisa Johana Lara Rodríguez

Ciencias Administrativas, Económicas y Contables

El libro "Miradas bioéticas: antología de reflexiones para la educación" es un proyecto de varios años que invita al lector a reflexionar sobre temas educativos desde la perspectiva de la bioética. Esta antología recopila ensayos y reflexiones que exploran cuestiones fundamentales como la vida, la salud y la dignidad humana en un contexto de avances científicos y tecnológicos. Cada contribución ofrece una ventana a debates que moldean nuestra comprensión de la bioética en un mundo complejo y tecnológicamente avanzado. El libro subraya el papel crucial de la educación para fomentar un pensamiento crítico y ético, esencial para abordar dilemas éticos …

Trust, Transparency, And Transport: The Impact Of Privacy Protection On The Acceptance Of Last-Mile Drone Delivery, Jurgen Heinz Famula

Electronic Theses and Dissertations

A common set of problems commercial delivery companies face is finding ways to increase the efficiency and reliability of the “last mile” of a package’s journey, all while reducing operating costs. This need for efficiency has driven many companies to explore using unmanned aerial vehicles (UAVs), or drones, to get packages to their final destination. Although UAVs have great potential to help increase efficiency in commercial package delivery, this comes at a potential cost to the privacy of people who intersect the flight paths of these unmanned vehicles. This thesis explores the effect of a mobile phone application for commercial …

Bridging Design And Perception: Novel Tools And Technologies For Creating Effective Human-Robot Interactions, Benjamin Dossett

Electronic Theses and Dissertations

This thesis explores human perception of robots through the use of novel tools and technologies. First, the impact of Augmented Reality (AR) data presentation on human perception of robots is investigated. A study conducted with the AR human-robot teaming system found that robot performance significantly influenced participants’ perceptions, overshadowing the impact of matching or mismatching robot confidence feedback. Second, the DU Want to Build-A-Bot platform is presented, which enables participatory robot design and opens the door for novel research of how robot design affects human perception. The Build-A-Bot platform enables the collection of diverse robot designs, facilitating machine learning analysis …

The Role Of Edc3 In Drosophila Melanogaster Neuronal Development, Keelan Zius

Electronic Theses and Dissertations

Enhancer of mRNA-decay 3 (Edc3) is a component of multiple decapping complexes that regulates the transcriptome by targeting a subset of transcripts for decapping for 5’-to-3’ messenger RNA (mRNA) decay. A missense mutation in the conserved Lsm domain of Edc3 has been reported in two siblings presenting with mild, non-syndromic intellectual disability (ID), however, the role of Edc3 is neuronal development has never been evaluated. Here, we use the Drosophila melanogaster model system to investigate the effects of Edc3 disruption on neuronal development. We found Edc3 reduction leads to significant hyperplasia at the larval neuromuscular junction (NMJ), providing the first …