Digital Commons Network^™

Fixed Bottom Wind Turbine Wave-Wake Interaction, Ondrej Fercak

Dissertations and Theses

The interest and benefits of offshore wind energy has also brought along legitimate design challenges for engineers. Most notably, the complex interaction between wind and turbine is further complicated by the addition of dynamic ocean waves. This dynamic coupling between wind, wave, and turbine is not fully understood. Even small improvements in wind turbine performance are welcome, so characterizing a fundamental dynamic in offshore energy is necessary to optimize design. Experimentation and simulation have been used to characterize inflow and turbine wakes and separately, wind-wave interactions. But only simulations have just begun to look at the wind, wave, and turbine …

Temperature-Induced Activation Of The Reproductive Axis Through Melatonin-Mediated Changes In Thyrotropin, Treven J. Winters

Dissertations and Theses

An animal's ability to synchronize life-history events or stages with optimal environmental conditions is paramount to successfully reproducing and maximizing fitness. Additional events including migration, foraging, rearing of young, and emergence from hibernation are all examples of processes under environmental control in one species or another. An exciting new mechanism involving neural thyroid hormone metabolism has been elucidated that links environmental control to the neuroendocrine reproductive axis. In birds and mammals with seasonal breeding cycles, this neuroendocrine pathway is activated by photoperiod-induced changes in thyroid stimulating hormone (TSH, also known as thyrotropin) production within the pars tuberalis region of the …

Simulation Of Light Propagation Captured By Photoemission Electron Microscopy (Peem), Nabila Islam

Dissertations and Theses

The Photoemission electron microscopes (PEEM) is a powerful tool capable of synchronously imaging wave nature of light manifested by interference patterns as well as its particle nature through the energy exchange between the incident photons and the photoemitted imaging electrons. PEEM offers a non-invasive high-resolution approach for studying light propagation and interaction phenomena within a nanophotonic waveguide [7,8]. The electric field intensity variation of the interference pattern yielded by the interaction between the incident light and the guided mode coupled into the waveguide produces varying photoemission yields creating contrast in PEEM image. The guided modes cannot be excited simply by …

Women's Work: A Feminist Standpoint Theory Study Of Scholarship, Voice, And Resistance In The Academic Generation Of Knowledge, Linnea Angelica Spitzer

Dissertations and Theses

More women than ever are earning doctoral degrees and are taking research or teaching positions at universities. However, the number of tenured women in full professorships have not yet achieved parity with the number of men in similar positions. Of the many reasons proposed for the disproportionate representation of women in the higher ranks of academia, one of the most commonly cited is the lower rates of publication by women in scholarly journals, an important criterion for promotion and tenure. However, women faculty are not unproductive. As scholars, they produce research and publish their findings in mainstream academic journals. In …

Ancillary Data For Refining Computer Adaptive Algorithms For The Assessment Of Anomia, Emily Kathryn Tudorache

Dissertations and Theses

Computer adaptive testing formats, based in item response theory (IRT), are becoming an increasingly popular approach to testing in healthcare because they offer numerous psychometric and practical advantages to assessment when compared to static tests that rely on classical test theory. Fergadiotis and colleagues (2015) have developed computer adaptive versions of the Philadelphia Naming Test (PNT) short-forms, which have demonstrated acceptable precision and standard error of measurement when compared to the static short-forms and original full-length assessment. This study sought to use synthetic data simulations using the catIrt R package (Nydik, 2014) to investigate possible advantages of the use of …

Genesis At Work: Advancing Inclusive Innovation Through Manufacturing Extension, Nichola Lowe, Greg Schrock, Ranita Jain, Maureen Conway

Urban Studies and Planning Faculty Publications and Presentations

US manufacturing is struggling with both a productivity and job quality challenge. These challenges are interconnected, reinforcing the need for increased coordination of economic and workforce development efforts. This article outlines the evaluation findings of a novel business-facing initiative called the Genesis Movement, to understand its role in reshaping the workforce experience within small- and medium-sized manufacturing businesses in Chicago, Illinois. Spearheaded in 2014 by the Illinois Manufacturing Excellence Center (IMEC), Genesis starts with the premise that workforce practices are central to business operations, productivity, and competitiveness—and therefore, manufacturing extension services need to promote improvements to job quality in support …

Incarceration And Suicide: Do The Risk Factors Differ For Civilians And Veterans?, Rheannon Gail Ramsey

Dissertations and Theses

Suicide is one of the leading causes of death in United States jails and prisons. Many researchers have looked at suicides in prisons and what can potentially cause suicidal ideation but there are conflicting findings among civilian incarcerated populations and United States military veteran incarcerated populations.

The intent of this study is to examine which risk factors are most prevalent among adults in custody, with a focus on mental health and substance use or abuse and how these risk factors differ between incarcerated civilians and incarcerated veterans. Using survey data from the 2002 Survey of Inmates in Local Jails conducted …

Transformative Health Care: Integrating The Perspectives And Lived Experiences Of Transgender And Gender Diverse Patients Into Health Care Education And Delivery, Shammarie Raquel Mathis

Dissertations and Theses

Prior research studies have found transgender and gender non-conforming (TGNC) patients at increased risk for poor physical and mental health as a result of disparities in health care access and treatment. Research has shown that perioperative patient education can improve patient outcomes, as well as promote increased knowledge, preparedness, and recovery post-surgery. For TGNC patients, gender affirming perioperative education classes are especially important for prospective patients as they not only provide comprehensive information about perioperative topics but also serve as a mechanism to promote personal empowerment through knowledge acquisition. The Oregon Health and Science University (OHSU) Transgender Health Program (THP) …

Spread Like Wildfire: Assessing The Utility Of Local Facebook Groups To Inspire Citizen Communication During A Disaster, Colby Riehl

Dissertations and Theses

As traditional sources of local news and information decline, community-oriented social media services (e.g. Nextdoor, Facebook groups) are expanding (Masden, Grevet, Grinter, Gilbert, and Edwards, 2014). Thus far, community-oriented social media use remains relatively understudied. Not only do we not understand how citizens utilize these resources, we are also generally unaware of the content that they create and access using them. A survey of residents of Oregon City, OR and its environs, which were impacted by the Oregon wildfires of 2020, was conducted to assess the differences among citizens who use a local Facebook group & those who do not. …

Testing Functional Variation In Thermal Properties For Antarctic Mosses, Andrew Forrest Clements

Dissertations and Theses

As the maritime Antarctic ecosystem continues to warm, glacial retreat will further expose subterranean permafrost to warmer conditions. One of the most visible changes in the ecosystem is the colonization of the new ice-free areas by bryophytes, particularly mosses. These bryophytes are having important effects on terrestrial thermal properties, but little is known about differences among Antarctic moss species in their thermal properties. Here, I measured the thermal conductivity, specific heat capacity, and the water content of moss species on King George Island to understand the insulation ability of Antarctic mosses, Polytrichastrum alpinum, Sanionia georgicouncinata, Chorisodontium aciphyllum, …

Rowing Concerns: Collaborative Governance And Stakeholder Determination In The Central Oregon's Deschutes Basin, Noel Vineyard

Dissertations and Theses

In 2019, a coalition of irrigation districts in central Oregon's Deschutes Basin submitted the Deschutes Basin Habitat Conservation Plan to the US Department of Fish and Wildlife. This Habitat Conservation Plan purported to have been constructed through a collaborative governance structure between the irrigation districts and various community stakeholders who all had interests in basin management, however segments of the Basin's river recreation community began to raise concerns that their voices were not included. The purpose of this research was to investigate how stakeholder status in the Deschutes Basin is created through collaborative water governance processes like development of the …

Politeness Strategies Used In Invitations In Japanese, Natsuko Llewellyn

Dissertations and Theses

This study explored how Japanese as Foreign Language (JFL) utilize politeness strategies compared to native speakers of Japanese (J1) in invitation discourses within the framework of Interlanguage Pragmatics (ILP). Invitation is one of the speech acts that requires careful consideration when conveying speakers' intentions through speech. It is assumed that JFL will struggle with appropriately inviting friends in different cultures while utilizing the politeness strategies in their invitation discourse in Japanese. Szatrowski (1993) revealed that there are thoughtful utterances to each other, the discernment utterance by the inviter and considerate utterance by the invitee, in the Japanese invitation discourse. Native …

Racialized Space: Historical, Economic, And Social Factors Contributing To The Gentrification Of North & Northeast Portland's Albina Neighborhoods, Red Burkett

University Honors Theses

Portland, Oregon has long held the reputation of being a quirky, artistic, mid-size American city for the ecologically friendly and progressively minded. What is less well-known is that Portland has a long history of segregation, racial violence, and public policy that is often viewed as hostile by the Black residents, especially the Albina neighborhoods of North and inner-Northeast Portland. Since Dr. Gibson published Bleeding Albina: A History of Community Disinvestment in 2007, terms such as gentrification, redlining and restrictive racial covenants have become more common in academic and social parlance concerning Portland. In this thesis, we will explore how gentrification …

The Effective Opening: Nonviolent Movements And How They Can Help To Enforce International Law Pertaining To Human Rights, Emmalyn A. Dewing

University Honors Theses

This thesis paper will examine the following question: How can nonviolent movements create enough pressure on human rights-abusing powers so that the enforcement of international law pertaining to human rights is more viable? Through the lens of this question, the paper will argue that one of the most effective ways to fully enforce international law pertaining to human rights is through the success of nonviolent movements whose goals align with it. This paper will further briefly argue that these movements can be helped by the international community through external support in the form of training and advice. To support this …

Comparing Instruments For Measuring Runoff From Experimental Ecoroof Platforms: A Case Study On Test Plots At Portland State University, Chance F. Hodges

University Honors Theses

Stormwater management is a primary ecological benefit ecoroofs provide to ecosystems. Quantification of runoff from large scale ecoroofs is difficult to replicate, so researchers often utilize smaller experimental ecoroof platforms. This approach is becoming increasingly common, so it is useful to compare and contrast approaches for runoff measurement at the platform scale. This paper uses the four 17.86 m² ecoroof platforms located on the Science Research and Teaching Center (SRTC) at Portland State University (PSU) in Portland, OR as a case study. A unique condition of these platforms is that they are installed at grade on the roof with …

Navigating Services & Supports In South Central Oregon: Community Uplift Family Voice Journey Maps, Callie H. Lambarth, Kate Normand, Ron Joseph

Center for Improvement of Child and Family Services Publications

The Home Visiting Systems Coordination (HVSC) project aims to create coordinated home visiting systems that strengthen and benefit all home visiting models as part of regional birth-to-5 early childhood systems in southern Oregon and northern California.

The project’s long-term goal is to improve outcomes for families and expand each region’s capacity to serve more families through homebased early childhood supports.

The Relationship Between Regulation And Care Access In The Doula Industry, Charissa Billings

University Honors Theses

Birth doulas are unregulated service providers in the United States, who provide informational, emotional, and physical support before, during, and after birth. Currently, the United States has the highest maternal mortality rate amongst the most developed nations, as well as a serious racial gap, with Black women being twice as likely to die due to pregnancy-related complications when compared to White women. Birth doulas can help close the gaps with trained support and advocacy. Since over 40% of the births in the US are covered by Medicaid, providing birth doula services to Medicaid recipients could result in improved birth outcomes. …

The Diminishing Power And Democracy Of Hong Kong: An Analysis Of Hong Kong's Umbrella Movement And The Anti-Extradition Law Amendment Bill Movement, Xiao Lin Kuang

University Honors Theses

The future of Hong Kong -- one of the most valuable economic port cities in the world -- has been a key political issue since the Opium Wars (1839-1860). After eighty five years of being a British colony, Hong Kong was returned to mainland China in 1997 under a special arrangement that was intended to preserve Hong Kong’s special political and administrative status until 2047. As Hong Kong is a special administered zone, it utilizes a democratic governing system and enjoys freedoms that mainlander citizens of China do not experience. Many scholars have warned Hong Kong of its dire position …

Beaver Reintroduction And Its Potential As An Ecological Conservation Measure For At-Risk Amphibian Species In The Pacific Northwest, Danielle Schwantes

University Honors Theses

Amphibian decline is a major concern in the Pacific Northwest (PNW), with many amphibian species listed as sensitive, threatened or endangered throughout the region. Some of the predicted main causes of amphibian decline are climate change and loss of habitat. The reintroduction of beavers into ecoregions of the PNW could be an important step in the conservation of this region’s amphibians, due to the beaver’s ability to engineer and structurally manipulate forest ecosystems. Beavers are able to restore wetland quality, productivity and biodiversity, creating vital amphibian habitat. This work explored the linkage between beaver presence and wetland hydrology, geomorphology, landscape …

The Effects Of Mental Illness On Capital Sentencing In The State Of Oregon, Mirtill E. Csikos

University Honors Theses

There is emerging awareness on the potential arbitrariness and unconstitutionality of executing persons with mental illness. Most states with current death penalty laws have little to no protection for severely mentally ill defendants during capital trials. The present paper looked at the effectiveness of sentencing statutes serving the purpose of protecting defendants with severe mental illness in the state of Oregon. Through a careful meta-analysis this research focused on determining how mental illness plays into death penalty decisions and if Oregon’s Guilty Except for Insanity defense provides sufficient protection. Furthermore, the question of mental illness as a mitigating factor was …

Optimization Of 3d Printed Mold Performance For Injection Molding Via Hollow Infill Patterns, Alan Fong

University Honors Theses

The applicability of hollow infill patterns has been explored for its applications in making 3D printed polymer-based injection molds in the additive manufacturing industry. Hollow infill patterns offer a significant reduction in material costs as well as the opportunity for reducing the cooling times via pumping a coolant fluid through the hollow cavity in a similar fashion to traditional conformal cooling channels. A 3D Jacks Support Hollow mold model was determined to be the best performing design. FEA analysis was conducted to determine the maximum reduction in internal volume (percentage of material saved) that could be achieved without exceeding the …

Linguistic Discrimination In Higher Education In Vietnam, Y Dang Nhu Tran

University Honors Theses

Prof. John Baugh has remarked that "this greater linguistic unity will help us all as we move toward the future" (Baugh, 2019). This qualitative research paper addresses the causes of linguistic discrimination and the impacts on current college students in Vietnam via three students from different regions (North, Central, and South) at one university. The paper examines linguistic discrimination and how political and linguistic identity have shaped behavior and social interaction on the part of three young Vietnamese intellectuals. The literature examines a brief history of Vietnamese language and culture, research paradigms in linguistic discrimination, and learning culture.

The Current Language Crisis In Siberia, Emma L. Vandehey

University Honors Theses

In the early years of the Soviet Union, state leaders were hesitant to create laws that would establish a national language. The USSR prided itself on multiculturalism and its ability to unify people from a variety of cultural backgrounds. As the Soviet Union became more established, ideations shifted from unity to uniformity. Indigenous languages from all over the country and various states were phased out, and the Russian language was implemented for children starting in primary school. Policies regarding heritage languages in primary and secondary schools stayed in place after the collapse of the Soviet Union. Now indigenous peoples living …

Witches As Queer(Ed) Comrades: How Patriarchy, Sexism And Religious Fanaticism Fueled The Early Modern European Witch Hunts, Iris S. De Lis

University Honors Theses

Patriarchy, sexism, and religious fanaticism each played a complementary and compounding role in creating the conditions for the brutal campaign of violent terror, torture, and mass murder that we now refer to as the early modern European witch hunts. In this paper I explore, by way of a cross-discipline literature review through a feminist and queer theoretical lens, the ways in which those who were accused of being witches in early modern Europe were rendered queer subjects by dominant organized religion, the state and society--regardless of whether they ever actually identified as witches or practiced witchcraft. The term queer subject …

The Psychedelic Renaissance: A Convergence Of Indigenous Knowledge And Science, Ronan K. Peck

University Honors Theses

In recent times, psychedelics have come back into the public eye, mostly through scientific intrigue about their healing potential. In the past decade, hundreds of studies have been conducted to explore the possible benefits, or risks, that these substances could bring to people – and there is great potential being found. This is the psychedelic renaissance, and with this phenomenon in full swing, it is important to take a step back and look at the full picture of our history with these substances. By doing so, it starts to become clear that psychedelics have guided human perception and understanding of …

An Economic And Political Lens Into The Lives Of Undocumented Migrant Female-Headed Households, Fátima V. Preciado Mendoza

University Honors Theses

Mexican undocumented women are essential in migrating in many households; they are often at the center of sustaining immigrant networks (Caroline B. Brettell 2015). The purpose of this study is to document, analyze, and report on the sociopolitical climate concerning the federal immigration detention and deportation pursued by the Trump regime and its effect on the mental health and financial well-being of undocumented migrant mothers working in Oregon. Throughout the interviewed data analysis process, the study examines the critical role women play in building community and navigating through multiple state social services and programs as a means of self-empowerment. This …

Understanding The Taboo Of Incest In The American South Through Analysis Of Southern Gothic Literature, Grace Young

University Honors Theses

In this paper, I am exploring the topic of incest through the lens of the Southern Gothic literature genre. I am interested in why the American South has the stereotype of having more prevalence of individuals who engage in incest in mountain communities versus other parts of the communities in America. I explore the intersectionality of race, geographic isolation, religion, and the taboo of incest in a small community. I use the texts of William Faulkner, Cormac McCarthy, and Breece D'J Pancake to do in-depth analysis of Southern Gothic themes such as taboo, family secrets, Christianity, and the grotesque. By …

Examination Of Exhaustion In Larval Pacific Lamprey (Entosphenus Tridentatus) Through Variations Of Temperature, Flow, And Cover, Jessica Falcon

University Honors Theses

Pacific lampreys (Entosphenus tridentatus) are culturally and ecologically valuable throughout the western coast of North America. The larval (ammocoete) stage of the Pacific lamprey spends three to eight years burrowed in the sediment as a filter feeder, and is an essential contributor to many of the Northwest’s freshwater ecosystems. Larval lamprey may be vulnerable to warming waters caused by climate change as well as seasonal dredging and salvaging events that dislodge lamprey from sediment, as they prefer cooler water and are relatively poor swimmers in comparison to other fish such as salmon. In this study, we observed how …

A Tale Of Two Narratives: The Role Of Storytelling In Racial Dialogue, Lane Cooper

University Honors Theses

Storytelling is a tactic often used in intergroup dialogues as a means for highlighting the human aspect of intractable identity-based conflict. In the U.S., racial dialogues are a popular method for addressing racism and exposing the systems that enable its survival. However, stories told by People of Color during these dialogues are often met with denial, dismissiveness, and even complete silence by their White counterparts. This then leads to cognitive and emotional distress for the tellers and a lack of action from the listeners. Using a theoretical analysis, this paper reviews the narrative conflict around racism and applies psychological research …

All Changelings Have Autism: How To Make A Better Book For Autistic Children, Nadia L. Hitchcock

University Honors Theses

How should a content creator, whether they work in film, literature, or sequential art, approach portrayals of Autistic characters? More specifically, how should these altruistic ideas be translated into a better storybook for Autistic children? This is the challenge that I have addressed with my Graphic Design thesis, by writing and illustrating my own children's picture book. The story itself is a spiritual successor to Old World changeling folktales and All Cats Have Asperger's Syndrome (Kathy Hoopman 2006). Though many Autistic people loved Hoopman's book as children, its visual shortcomings and linguistic oversights have marred its intended inclusive, positive message. …