Digital Commons Network^™

Securing The Internet Of Things At Scale, Steven L. Willoughby

Student Research Symposium

The world of the connected “Internet of Things” (IoT), including the "Industrial Internet of Things" (IIoT) is expanding to include more devices which observe and influence our daily lives, routines, locations, and even our state of health. But have the underlying protocols by which they communicate this data kept pace with the need to protect our privacy and security?

My talk will introduce my research into an approach to better secure this information flow using appropriate access controls without sacrificing performance. I will assess the historical challenges and simple access controls applied to IoT networking protocols and how they can …

Expressive And Instrumental Social Capital Facilitates Network Connections For Community College Transfer Students In Stem, Makenna R. Stone

Student Research Symposium

Students that transfer from a community college (CC) to a university often experience social and academic barriers that can lead to feelings of isolation and challenge their persistence. One way to alleviate these barriers is to develop capital. We aimed to understand how a cohort of CC STEM transfer students may have developed and exhibited social capital, or “assets accessed through social connections”. We leveraged the Network Theory of Social Capital to examine the instrumental (i.e., concrete advice and support) and expressive (i.e., emotional support and encouragement) actions that led to feelings of connection and persistence. We conducted semi-structured interviews …

Impact Of Testosterone Therapy On Voices In Trans-Masculine People: A Scoping Review, Samuel E. Hedine, Jeff Conn, Deanna Britton

Student Research Symposium

Treatment of trans people by speech-language pathologists (SLPs) dates back to at least the 1980s. However, the majority of early research on the voices of trans people focused on trans-women. More recently, the field of speech-language pathology has garnered more interest in the effects of testosterone therapy in trans-masculine individuals. The goal of this project is to review current research, and compile the known effects of testosterone therapy in the trans-masculine population on common acoustic indices of voice production, including fundamental frequency (pitch), decibels/sound pressure level (dB SPL; loudness) and cepstral peak prominence (voice quality). A scoping literature search was …

Cultivating Connections: Future Approaches To Tourism Esl Pedagogy, Kelly Abrams

Student Research Symposium

My poster will display my research that investigates the pivotal role of English for Specific Purposes (ESP) in Cuba's tourism sector and its broader implications for global tourism contexts. Through qualitative methods including written questionnaires and oral interviews with people working in the tourism industry in Cuba, I examined the significance of language proficiency, particularly English, in various industry roles within Cuba's tourism and hospitality sector. Findings highlight how ESP facilitates effective communication, elevates service standards, and fosters career progression for individuals working in the sector. Furthermore, my research underscores the interconnectedness of language and tourism, emphasizing the importance of …

Manga In Bookstores, Claire L. Curry

Student Research Symposium

In recent years, manga has seen a surge in popularity. This research seeks to provide insights into the role of manga in U.S. bookstores and its implications for reader discovery. Through observations at bookstores in the Portland area, including Books with Pictures, Kinokuniya, Powell’s, and Barnes and Noble, it was examined how manga is presented to readers. Factors considered include manga’s physical placement in the store and surrounding sections as well as shelving methods and categorizations like genre labels, particularly for manhwa, manhua, and light novels. Display tables, end caps, and shelf talkers also demonstrate an unique way for bookstores …

Impact Of Mindfulness-Oriented Recovery Enhancement On Pain And Disability In Patients With Chronic Lumbosacral Radiculopathy: Results From An Rct, Danielle Zuzero

Student Research Symposium

Lumbosacral Radiculopathy (LR), also known as sciatica, is a common type of radiating neurologic pain in the lower extremities with an estimated lifetime prevalence as high as 43%. The goal of this randomized control trial was to determine the impact of virtually delivered Mindfulness-Oriented Recovery Enhancement (MORE) on patients with LR. Participants were randomized to MORE sessions or treatment-as-usual (TAU) for 8 consecutive weeks, pain intensity was collected daily via email. At baseline and follow-up visits, participants completed questionnaires of disability, quality of life, depression, mindful interpretation of pain, and train mindfulness. Patients undergoing MORE sessions had greater improvement in …

Work And Psychological Recovery Experiences Of Asian American And Pacific Island Workers In Higher Education, Christine M. Beceril

Student Research Symposium

Individuals from Asian, Asian American, and Pacific Islander (AAPI) backgrounds constitute the largest and fastest-growing minority group in the U.S. job market - comprising 6.7% of the U.S. population and expected to reach 15% by 2065 (United States Census Bureau, 2022). Despite their rapid growth, there has been a scarcity of literature in industrial-organizational psychology, with limited research on how AAPI workers engage in psychological recovery after work. This is a critical, yet unexplored area as previous research on psychological recovery from work has been investigated with homogenous White samples. Additionally, AAPI workers play integral roles in the U.S. higher …

Self-Balancing Robot Leg, Ben Bolen

Student Research Symposium

Research in the Agile and Adaptive Robotics Lab involves the creation of biomimetic robots. To this end, we developed a self-balancing robot leg actuated with braided pneumatic actuators (BPAs)—a type of pneumatic artificial muscle. These BPAs, akin to human muscles, exhibit properties such as high strength-to-weight ratio and tunable passive stiffness. An Inertial Measurement Unit (IMU) was placed on top of the tibia for feedback and the tibia and foot were connected with a hinge joint. The orientation of the ankle joint was controlled with an Arduino microcontroller sending commands to the proportional pressure valves supplying the BPAs. Leg balance …

Evaluating Equitable Success In Literary Spaces: A Portland Book Festival Case Study, Tia-Theo I. Thompson

Student Research Symposium

In 2015, data expressing the lack of diversity in literary institutions was made publicly available, yet equitable change remains slow. How do literary institutions achieve and evaluate successes in equity? Do certain factors expedite this transition?

In a three year Diversity and Inclusion plan (2019-2022), the Portland nonprofit, Literary Arts, drastically altered their internal and external practices to accommodate/introduce BIPoC writers, presenters, and employees. The equitability of this plan is assessed at the Portland Book Festival (PBF), 2023. Data concerning the identities, placement, and publications of Writers and Presenters at PBF is analyzed within the context of the goals set …

Online Or In-Person: What Mode Of Conversation Makes People Feel The Most Socially Connected?, Nathan P. Gheorghita, Cynthia D. Mohr, Maryann Samson, Sheila Mccabe, Julia Lynch

Student Research Symposium

Since the onset of the COVID-19 pandemic, people have been spending significantly more time online. Today, people spend an average of 6 hours and 58 minutes online every day, and much of this time is spent socializing via various platforms. Many studies have examined the benefits and risks of socializing online, but few studies have examined online conversations specifically. In this study I aim to uncover the differences in perceived social connection based on the medium of conversation. To do this, I will administer the Connectedness During Conversations Scale (CDCS) to a sample of Portland State University students (N=80). The …

Exploring Speech Experiences, Cpib Scores, And Aac Assessment Experiences Of Autistic Aac Users With Intermittent, Unreliable, Insufficient, And/Or Expensive Speech, Karina Rayl, Pang Lee Herr, Brandon Eddy, Amy Donaldson, Stephanie Fuller, Alyssa Zisk

Student Research Symposium

There is growing evidence from the perspectives of speaking autistic people that augmentative and alternative communication (AAC) supports their self-expression and communicative agency. Despite the evidence supporting the communication effectiveness of AAC, autistic adults have reported that professionals often prioritized speech as the ideal communicative method rather than offering AAC as a communication option. This study will investigate autistic adults’ AAC assessment experiences and explore whether a modified version of the Communication Participation Item Bank (CPIB) self-rating questionnaire could be an effective tool to document the internal states of intermittent, unreliable, insufficient, and/or expensive speech. Surveys will be distributed to …

Exploring Attrition And Linguistic Shifts: The Impact Of Covid-19 And Anti-Asian Discrimination On The East And Southeast Asian Diaspora, Sam Mutschler-Aldine, Amy Wan-Ling Lin, Natalie Robison, Milntra Raksachat, Carolyn Quam

Student Research Symposium

This study investigates language and identity among speakers of East Asian and Southeast Asian languages in the United States, within the context of the COVID-19 pandemic and the concurrent rise in anti-Asian hate. We adopt a mixed-methods approach guided by three research questions exploring: (1) changes in language use since pandemic onset, (2) changes in perspectives on language identity since pandemic onset, and (3) effects of geopolitical climate, specifically the rise in anti-Asian hate, on language use and perspectives on language identity. Qualitative methodologies allowed us to capture a diverse range of language experiences. Many (but not all) participants indicated …

Feesability Of Laryngeal Endoscopy Simulation Labs In Student Training: A Scoping Review, Anna Thut

Student Research Symposium

Fiberoptic Endoscopic Evaluation of Swallowing (FEES) involves passing a flexible endoscope through the nose and down the throat to provide a detailed view of the throat, airway, and vocal folds. With the scope in place, people can eat and drink, allowing the clinician to evaluate for safe swallowing. Speech-Language Pathologists (SLP) use FEES for diagnostic evaluation and to gauge therapy progress and effectiveness. Simulation training on a low or high-fidelity model may provide a bridge for SLP graduate students to gain competency before being introduced to FEES in a clinical setting. This review aims to gather evidence on the use …

Plasma Ion Source, Nathan K. Davis

Student Research Symposium

It is well known that a plasma can be created with both high input power and ultra low pressure. The challenge is in creating these same plasma characteristics with both lower power while maintaining a higher pressure. We have developed an ion beam by careful manipulation of magnetic and electric fields. Magnetic fields are used to accelerate ambient electrons to ionize the low pressure gas into a plasma. Electric fields are used to extract the ions into a focused beam. To achieve these initial ionizations, an artificial vacuum is created to reach low enough pressures to ionize the gas. A …

Talking About Weight: Weight Stigma And Information Seeking, Alexandra N. Henrici, Lillian H. Mantel

Student Research Symposium

Guided by the Risk Information Seeking and Processing (RISP) model, this study explores the relationship between fear of discussing weight-related topics, or weight-related communication apprehension and weight bias internalization and tests the inconsistent RISP relationship between risk perception and information insufficiency. It investigates differences in weight-related communication apprehension in those who previously sought weight-related information from interpersonal or mediated sources. Using a survey of 64 undergraduate communication students, the study found that high levels of weight bias internalization correlated with high levels of weight-related communication apprehension. The study did not find a significant difference in weight-related communication apprehension based on …

Respiratory-Swallowing Coordination In Motor Neuron Disease: A Scoping Review, Mariam Z. Mansoor

Student Research Symposium

Respiratory-swallowing coordination (RSC) is essential for providing efficient breathing and optimal swallowing function. Most commonly used methods of measuring RSC include nasal thermistry, and respiratory inductance plethysmography (RIP) to determine direction and durations of airflow. Outcome measures include swallow apnea duration (SAD) and respiratory phase pattern (RPP), i.e., direction of airflow pre- and post-SAD. The goal of the current project was to conduct a scoping literature review of RSC, focusing on the motor neuron disease (MND) population, including people with amyotrophic lateral sclerosis (ALS). A multi-engine literature search was conducted in 2023-24 via PubMed and Google Scholar. No limitations were …

Second Language Impacts On First Language Processing, Natalie Robison, Sarah C. Creel, Sarah Elkington, Judith Kelholt, Amy Lin, Carolyn Quam

Student Research Symposium

This line of research investigates attrition (loss of fluency) of native Mandarin language (L1) proficiency with increasing proficiency in English. English uses pitch to denote intonation (e.g., “it’s there?” versus “it’s there!”), while Mandarin uses pitch to indicate word meanings; e.g., /he/ means “drink” with a high, level tone, or “river” with a rising tone. The present study delineates between two alternative explanations for the prior finding (Quam & Creel, 2017) that English proficiency correlates with attrition of Mandarin tones, but not vowels. This pattern could be explained by 1) language assimilability (L1-L2 Assimilability Hypothesis), or 2) by tone being …

Activism And Stress, Ashanti Laine T. Peredo, Taylor Gayton, Lalaine Sevillano

Student Research Symposium

Black women often shoulder a heavier burden of financial, social, and physical responsibilities within their families compared to non-Black individuals who do not identify as women. This increased load contributes significantly to mental health disorders and psychological distress and well as physical disparities. When compounded with experiences of racism and sexism, these responsibilities can lead to a sense of social invisibility and foster a tendency towards stoicism. This study is a mixed method study as it aims to quantitatively examine the relationship between activism, physical wellbeing measured by the Conserved Transcriptional Response to Adversity (CTRA), and psychological wellbeing among Black …

Gangism: An 'Elementary Form Of Religious Life', Robert Northman

Student Research Symposium

This study is intended to examine the question: could gangs be a form of religion? The study will examine Steven Cureton's ethnographic case study of a street gang as found in his work titled Hoover Crips (2008), where I will then analyze the findings within the sociological framework of Emile Durkheim’s theory of religion as set forth in his classic book titled Elementary Forms of Religious Life (1912).

This exploration faces challenges as the terms “gang” and “religion” are both hotly contested, and discussions on each have largely occurred independently, leaving a significant gap for this research to address. This …

My Father's Story: An Ethnography About Language Loss, Ariel Wilsey-Gopp

Student Research Symposium

War disrupts everything, including a child’s developing language and cultural identity. My father grew up in both Serbia and Germany during the post-WWII political upheaval. By the time he was an adult, he knew five languages, yet lacked his own language and languaculture (Agar, 1994).

It benefits us to understand more completely the effects of language loss as political borders continue to shift and human migration increases. Research in social sciences, psychology, and biology all examine the effects of trauma, the brain, and child development. Applied linguistics examines language loss in relation to Second Language Acquisition (Altarriba & Heredia, …

Community Resilience In Portland Parkland Soils, Jason W. Triefenbach

Student Research Symposium

Proposing soil nutrient testing as a model for community research and ecology education, this presentation considers pathways to raising public engagement with sustainability issues while enhancing community resilience and social capital. "Community Resilience in Portland Parkland Soils" represents my research thus far on the conjoined topics of urban soils and community efficacy, in which I have attempted to synthesize biogeophysical processes in city parklands with strategies for raising public awareness about urban ecosystems.

I measured and compared soil nitrogen levels at 8 iconic Portland area parks using commercially- available garden test kits, while concurrently researching the historical and contemporary land …

Community Responses To Us Regional Clean Hydrogen Hubs, Bethani Turley

Student Research Symposium

In 2023, the Bipartisan Infrastructure Law designated 7 billion dollars to fund regional hydrogen hubs across the US with the goal of kickstarting a utility scale hydrogen economy for the US electric grid. A promising technology in the renewable energy transition, hydrogen can be made from a multitude of energy sources, often designated by colors: green hydrogen is made from solar and wind, pink hydrogen from nuclear, and blue hydrogen from natural gas. This presentation examines this new hydrogen economy through the case study of the Appalachian Regional Clean Hydrogen Hub (ARCH2). ARCH2 is a blue hydrogen hub proposal by …

“Fruit From A Poisonous Tree”? Constituting Logics Of Law Enforcement Phlebotomy, Anne Johnson

Student Research Symposium

In at least 17 states in the United States, police are drawing blood from drivers they suspect of impairment. Despite concerns about civil rights, ethics of consent in custody, and use of force, law enforcement phlebotomy (LEP) remains critically understudied. Through 27 in-depth, semi-structured interviews with police phlebotomists and LEP program officials from 10 states, this study begins to fill that gap, asking: What are the logics of law enforcement phlebotomy? Constituting these logics–as articulated by police–are beliefs about both policing and phlebotomy, and officers’ motivations in the fight against impaired driving. This article assesses how the logics of law …

Power & Planning: A Critical Comparison Of Tribal And Non-Tribal Wildfire Protection Plans, Christian J. Heisler

Student Research Symposium

In 2003, the US government passed the Healthy Forest Restoration Act, which urged wildfire-prone communities to develop Community Wildfire Protection Plans (CWPPs). These plans allow local groups to contextualize risk, practice social learning, and develop social capital while addressing wildfire risk. Within planning realms, however, decision-making power is usually concentrated unequally between social groups which can limit the influence of marginalized communities. Tribal nations, specifically, have been excluded from wildfire planning since European contact, signaling that CWPPs may not reflect Indigenous worldviews and priorities. Given the recent push from the federal government to increase land management collaboration with tribes, it …

Behavioral Intention For Ai Usage In Higher Education, Isaac A. Odai, Elliot Wiley

Student Research Symposium

This study sought to further understand the cognitive factors that influence undergraduate students' behavioral intention to use generative AI. Generative AI's presence in academic spaces opens the door for ethical and pedagogical questions. This study surveyed 51 undergraduate communication students to measure their attitudes, subjective norms, self efficacy and their behavioral intention to use GenAI for school work. The results of this study showed behavioral intent had a positive relationship with attitudes and subjective norms. The implications of these findings show that personal beliefs and the perceived beliefs of others are correlated to undergraduate students’ intent to use GenAI for …

Queer Rural Youth Online: A Digital Ethnography, Joseph R. Burns

Student Research Symposium

This presentation is based on digital ethnographic fieldwork conducted in 2023 within Queer subcommunities on the social media sites Reddit and Twitter (now known as X) and data collected from interviews with Queer rural youth members of these communities. The data reveal that social media use directly influences the lives and actions of Queer rural youth, who use the space to build social connections, shape their personal identities, and seek advice pertaining to their in-person lives and decisions. By using these spaces, Queer rural youth build both bonding and bridging social capital, learn to subvert restrictions to their Internet access, …

Prosodic Analysis Of Wh-Indeterminate Questions In L2 Korean, Jung In Lee

Student Research Symposium

Wh-indeterminate questions, particularly wh-questions and yes-no questions, in Korean are ambiguous due to the limited morpho-syntactic markers in the sentence. The absence of these markers leaves two questions syntactically identical, leading to lexical ambiguity. The disambiguation of these two questions relies primarily on prosodic cues. Drawing from previous studies in the L1 Korean context, this study examines the intonation patterns of English learners of Korean in producing and perceiving wh-questions and yes-no questions and explores if there is any sign of L1 influence from English. Five English learners of Korean, who received formal instruction in Korean at a U.S. university, …

Say It With Flowers: The Semiotics Of A Not-So Secret Language, Cecilia Januszewski

Student Research Symposium

The Victorian flower language Is mythologized as a widely known communicatory practice Involving flowers with symbolic meanings and creative bouquet-making In order to convey personal and emotional messages. This Is not entirely accurate: floriography was a theoretical floral code based on the Turkish practice of selam, which the British and French upper class reinterpreted and edited to create their own version. This thesis examines how floriography functions semiotically, both as a mythologized language and as It was actually used, and traces the lineage of floral semiotics and greeting cards from Victorian Britain to contemporary America. I analyze floral semiotics, both …

Generative Artificial Intelligence, Co-Evolution, And Language Education, Steven L. Thorne

World Languages and Literatures Faculty Publications and Presentations

At this point in the history of applications of technology for language learning, there is nothing surprising about uses of video conferencing, social media, language tutorial websites and apps, online textbooks and grammars, translation tools, and video- and audio-based content (among others). As Internet theorist Clay Shirky has described it, “communications tools don't get socially interesting until they get technologically boring” (Shirky, 2008, p. 105), and indeed, there has been considerable interest in more deeply examining humans’ now quotidian uses of digital technologies and modalities as they potentially transform language use and trajectories of development. Examples of incisive research …

Feasibility Of Deploying Home-Based Digital Technology, Environmental Sensors, And Web-Based Surveys For Assessing Behavioral Symptoms And Identifying Their Precipitants In Older Adults: Longitudinal, Observational Study., Wan-Tai M. Au-Yeung, Yan Liu, Remonda Hanna, Sarah Gothard, Nathaniel Rodrigues, Cierra Leon Guerrero, Zachary Beattie, Jeffrey Kaye

Mathematics and Statistics Faculty Publications and Presentations

Apathy, depression, and anxiety are prevalent neuropsychiatric symptoms experienced by older adults. Early detection, prevention, and intervention may improve outcomes.