Digital Commons Network^™

Design Of A Canine Inspired Quadruped Robot As A Platform For Synthetic Neural Network Control, Cody Warren Scharzenberger

Dissertations and Theses

Legged locomotion is a feat ubiquitous throughout the animal kingdom, but modern robots still fall far short of similar achievements. This paper presents the design of a canine-inspired quadruped robot named DoggyDeux as a platform for synthetic neural network (SNN) research that may be one avenue for robots to attain animal-like agility and adaptability. DoggyDeux features a fully 3D printed frame, 24 braided pneumatic actuators (BPAs) that drive four 3-DOF limbs in antagonistic extensor-flexor pairs, and an electrical system that allows it to respond to commands from a SNN comprised of central pattern generators (CPGs). Compared to the previous version …

An Examination Of Non-Waged Labor And Local Food Movement Growth In The Southern Appalachians, Amy Kathryn Marion

Dissertations and Theses

Farmers have traditionally depended on their families or paid employees to cover their extensive labor needs. Today, non-waged labor models are gaining popularity, especially among small, ecologically-oriented farms. Apprenticeships and internships can be a primary form of training for a population of new and beginning farmers, many of whom are entering the field without farming backgrounds. However, many question the sustainability and justness of these arrangements. As a new phenomenon, very little research examines the relationship between non-waged labor models like agricultural apprenticeships and alternative food movements. In this exploratory study, the author surveyed nearly 250 farmers growing for local …

Situational Context Of Police Use Of Deadly Force: A Comparison Of Black And White Subjects Of Fatal Police Shootings, Shana Lynn Meaney Ruess

Dissertations and Theses

Police use of deadly force is an understudied yet deeply important issue in our society. Recent years have seen a dramatic increase in public concern over use of deadly force, particularly when that force is used against people of color. Due to the relative low frequency of deadly force incidents, little is known about when such force is used, or who it is used on. Recent studies have found a racial disparity between white and black subjects of deadly force, with black subjects significantly over represented as a proportion of the population. This study further expands our understanding of police …

Design And Experimental Evaluation Of Deepmarket: An Edge Computing Marketplace With Distributed Tensorflow Execution Capability, Soyoung Kim

Dissertations and Theses

There is a rise in demand among machine learning researchers for powerful computational resources to train complex machine learning models, e.g., deep learning models. In order to train these models in a reasonable amount of time, the training is often distributed among multiple machines; yet paying for such machines (either through renting them on cloud data centers or building a local infrastructure) is costly. DeepMarket attempts to reduce these costs by creating a marketplace that integrates multiple computational resources over a distributed TensorFlow framework. Instead of requiring users to rent expensive GPU/CPUs from a third-party cloud provider, DeepMarket allows users …

Are We Providing Preferred Floral Resources For Bees In Our Neighborhoods? : Assessing The Relationship Between Small Scale Vegetation Metrics And Bee Presence In Se Portland, Hailey Wallace

Dissertations and Theses

Bee pollinators can thrive in highly urbanized environments if their preferred floral resources and habitat types are available. Enhanced pollinator habitats are being created globally, with a large local effort in Portland, Oregon. This project determined if we were providing the most preferred floral resources at enhanced pollinator sites for bees, if floral resources were available throughout the season, and if differences in dietary preferences between native and honey bees would allow for the identification of "native bee floral resources" in South East Portland. Bee pollinators were monitored from June to August at three enhanced pollinator sites in South East …

Closure Or Censure? Examining The Determinants Of Disclosure Of Sexual Assault Among College Students, Whitney Head-Burgess

Dissertations and Theses

Sexual assault is an ongoing problem on college campuses, with some projections indicating that one in four college women has experienced some sexual coercion or assault during her time at university. Recent national policy has strove to address the problem through legislation like the 2013 Campus Sexual Violence Elimination Act. Nonetheless, the crime remains the most underreported in the nation despite policy and law which explicitly defines what constitutes sexual assault. However, most victims of sexual assault will disclose what happened to someone else, even if they choose not to report.

This research examines sexual assault disclosure practices on a …

Large-Scale Der Aggregations Of Electric Water Heaters And Battery Inverter Systems, Kevin Marnell

Dissertations and Theses

Distributed energy resources like residential electric water heaters and residential battery inverter systems offer a small amount of change to the grid individually. When aggregated however, these assets can cause major effects to the electric grid. Aggregating these resources allows them to take on generator-like functions with the ability to increment power and decrement power.

The Western Energy Imbalance Market is an energy market offering 15 minute and 5 minute markets for energy transactions between balancing areas. Generation assets make increment and decrement bids. Traditionally the only entrants to this market have been large scale generators and large scale assets …

Regional Modeling Of The Glaciers Of The North Cascades Mountains, Washington, Usa, Christina Eileen Gray

Dissertations and Theses

Glaciers in the North Cascades store winter snowfall as ice and release it in late summer as melt, providing an important regional source of water and hydroelectric energy. The future of glaciers in the North Cascades, Washington, were evaluated using a regional glaciation model driven by the Community Climate System Model 4 global climate model. The climate model was coupled with three Representative Concentration Pathways (RCPs), 2.6, 4.5, and 8.5. These RCPs provide a business-as-usual scenario (RCP 8.5), which assumes society makes little to no efforts to reduce greenhouse gas emissions, a best-case scenario (RCP 2.6) with strong attempts to …

Effects Of Regulation Intensity On Marijuana Black Market After Legalization, Sikang Song

Dissertations and Theses

Since 2012, many states and Canada have legalized the use and sale of recreational marijuana. One of the expected benefits of the legalization is that the establishment of a legal cannabis market would eliminate the black market which has been the main form of marijuana trade for decades. Even though legal options are available for marijuana producers and consumers, the black market is still thriving in states where recreational marijuana has been legalized. The reasons behind the persistence of the marijuana black market are complex. One of the main arguments is that the legalized states have failed to establish a …

Gender And The Voir Dire Process, Tasha Ann Lane

Dissertations and Theses

The jury selection process (also known as voir dire) has been examined previously in many ways, including racial impacts. Previous research suggests the need for more examination of how and if gender impacts the voir dire process. The lack of knowledge about how gender impacts voir dire might also have implications for public respect and trust in the court system. For example, theories of procedural justice suggest that individual experiences with the legal system affect whether they view the entire legal system as being legitimate. This is important because this perception then impacts how the public interact with the system. …

An Evaluation Of Clackamas County's Transition Center Using Propensity Score Modeling, Alicia De Jong Mckay

Dissertations and Theses

Part of the purpose of Justice Reinvestment Initiatives (JRIs) involve a focus of funds and effort toward implementing practices that increase the chances of successful reintegration of people recently released from incarceration. Similar to other jurisdictions, Oregon's JRI has taken a number of forms of reintegrative efforts. In 2016, JRI funding opened a services hub and reintegration/reentry center in a rural county. The Center offers a central location for reentry services, such as employment and housing assistance, but is not a requirement of an offender's supervision. Relying on the risk-need-responsivity framework, this program aims to reduce recidivism by mitigating barriers …

Nine Times Out Of Ten, You Don't Die, Patrick Ronald Wensink

Dissertations and Theses

My novel, "Nine Times Out of Ten, You Don't Die," is the story of Layla Wisnewski and her quest to write a book about her famous father. In the 1970s, "Big Dan" Wisnewski was a motorcycle stuntman who broke more bones than anyone living. He jumped cars and buses and rivers atop a white Harley Davidson. Big Dan was considered an American Hero.

Fast forward forty years, Big Dan has been dead for decades, and his daughter Layla is writing a book about his life. While researching the book, she learns she was kidnapped as a baby. This …

The Gouda, The Bad, And The Ugly: Prioritizing Intersections For Pedestrian Safety In Tillamook, Or With Different Risk Estimation Methods, Kelly M. White

Civil and Environmental Engineering Master's Project Reports

The following report explores five different pedestrian risk estimation methods at urban intersections. Six study intersections in Tillamook, Oregon were chosen as a case study to analyze each risk estimation method and apply the values to a project prioritization process. Ultimately, risk factors of both exposure and infrastructure contribute to the highest amount of risk for pedestrians. The Oregon Department of Transportation's State Planning and Research Report 779 was identified as the most comprehensive risk estimation method.

Test Setup Design And Cyclic Evaluation Of Rocking Clt Wall And Floor Restoring Force Lateral System, Aaron Davis Smith

Civil and Environmental Engineering Master's Project Reports

The introduction of the demand for mass timber buildings in areas with seismic hazards has called for new lateral systems. Lateral systems in mass timber building typically utilize a rocking shear wall with post-tensioned rods to provide system re-centering. These post-tensioned rods add axial load to the shear wall and potentially endure long term creep affects. Mass Timber buildings consist of cross laminated (clt) shear walls and floor slabs along with glulam beams. The flexural capacity of the CLT floor slabs along with dead load can provide an alternative source for the restoring force. This project developed a test setup …

Travel Behaviors Of Persons With Intellectual And Developmental Disabilities, Joseph C. Totten

Civil and Environmental Engineering Master's Project Reports

People with intellectual and developmental disabilities live different lives than the general population. Often prohibited from driving, persons with intellectual disabilities cite transportation as top concern, limiting their independence and freedom to live, work or recreate where and when they choose. Improving services for persons with developmental disabilities requires that engineers and planners understand how persons with intellectual disabilities travel, and what types of transportation are available to them. This report hopes to identify the availability of transportation options to persons with developmental disabilities such that planners, engineers and advocates can determine how altering the transportation system might affect persons’ …

National Scan Of Bike Share Equity Programs: Approaches And Best Practices For Promoting Equity In Bike Share, Nathan Mcneil, John Macarthur, Joseph Broach, Austin Cummings, Rae-Leigh Stark, Rebecca Sanders, Adrian Witte

TREC Final Reports

As bike share systems around the United States have grown in number and size in recent years, there has been an increasing effort to ensure that those systems are accessible to all residents, particularly those who have the fewest resources or have been underserved in the past. The mobility landscape in 2019 is rapidly changing, with scooter and e-bike systems along with ride-hailing and ride-sharing companies contributing to a new and uncharted urban transportation scene. Meanwhile, bike share is still relatively new and changing quickly. In order to compete and excel in this changing landscape, particularly with regard to providing …

Spatial Analysis Of Burglary And Robbery Crime Concentration Near Mass-Transit In Portland, Bryce Edward Barthuly

Dissertations and Theses

The relationship between mass-transit and the concentration of burglary and robbery crimes is inconsistent within the available literature in environmental criminology. A number of studies have provided evidence of crime concentration at and near mass transit locations where paths intersect, referred to as a node. These empirical studies bring in environmental criminology theory with the idea that crime is clustered, and the pattern of the concentrations is substantially influenced by how and why people travel and move in a city. It is suggested that public transit allows for a large proportion of the population to move around the community along …

Parasocial Relationships With Podcast Hosts, Mikhaela Nadora

University Honors Theses

This study is a deductive thematic analysis of podcast hosts' attributes that explores how parasocial relationships (PSR) might be cultivated with listeners. The author analyzes five episodes of a podcast, Stuff You Should Know, and use its transcriptions to code for themes of identification, conversation practices, and authenticity to suggest ways PSR is developed by the podcast's hosts.

Results found host behaviors suggest how listeners may react to them. The combination of the effect of social deixis while describing personal characteristics suggest listeners may feel physically and emotionally closer to the hosts. Listeners may also see them as more trustworthy …

Convivial Clothing: Engagement With Decommodified Fashion In Portland, Or, Sarah Guldenbrein

Dissertations and Theses

In a capitalist system demanding perpetual accumulation, producers invest significant resources into proving the superiority of new products over existing ones. When the normative concept is "better" rather than "good" consumers can never reach a sense of sufficiency. One countermovement is that of degrowth. Degrowth scholars advocate for a voluntary and democratic transition to a post-growth future. This thesis contributes to the emerging literature on degrowth by examining alternatives to "fast fashion," an industry with a huge environmental impact and notoriously high turnover. Drawing on participant observation and semi-structured interviews with participants in Portland, Oregon's clothing swaps and Repair …

2019 Commencement Program, Israel Bayer, Doreen Dodgen-Magee, Yasuhisa Iida, Rick Miller, Nanette Reid

Commencement Archives 2010-19

The program for the Portland State University 2019 Commencement ceremonies, held June 14, 15, and 16, 2019.

Doreen Dodgen-Magee gave the commencement address to the Graduate School of Education ceremony on June 14, 2019.

Rick Miller, Yasuhisa "Yaz" Iida, and Nanette Reid delivered keynote addresses to the School of Business ceremonies on June 15, 2019.

Israel Bayer gave the commencement address and received an honorary doctorate during the Professional Schools ceremony on June 16, 2019.

Working Paper No. 04, Marx And Religion, Lauren Sweger-Hollingsworth

Working Papers in Economics

This inquiry seeks to establish that, in his writings, Karl Marx offers his perspectives on religion. The origins of Marx’s conception of religion can be traced to his family history, adolescence, and time at the University of Berlin. Marx’s criticism of contemporary philosophy offers a penetrating account of his views on religion, proving critical of the individualism and idealism implemented by his contemporaries. In Marx’s judgement, religion offers a false sense of solace in a world marked by abuse. Religion rationalizes domination, sows societal divisions, and preserves oppressive institutions. Marx’s materialist approach focuses on the real-life relations and activities within …

Working Paper No. 13, Friedrich List And National Development, Mitch B. Priestley

Working Papers in Economics

This inquiry seeks to establish that Friedrich List offers an approach to national economic development based upon implementing policies. List conceptualizes and describes a situation wherein the United States, along with Germany and some other Continental European countries, face challenges dissimilar to Britain. List emphasizes an alternate approach towards national development that flies in the face of Adam Smith’s laissez-faire, free-trade prescription, focusing instead upon the powers of production, that he suggests, offer a proper measure of a nation’s wealth. List is a limited protectionist who advocates for national policies suited to a nation based upon its history and level …

Working Paper No. 17, William Petty And Political Economy, Clarissa Allen

Working Papers in Economics

This inquiry seeks to establish that during the first part of the 1600s, William Petty generated original contributions to political economy. Subsequent to the Irish rebellion and in the wake of the English occupation of Ireland, Petty led a team of surveyors for measuring out areas of Ireland. The survey that he led mapped selected territories and detailed numerous characteristics, thus employing an early, rudimentary, but highly insightful census method. Petty sought to describe his world objectively and quantitatively through the use of numbers, weights, and measures – rather than subjectively. Petty developed a method of calculation still famously known …

Working Paper No. 25, On The Importance Of Contributions By Robert Torrens, Mitchell Veele

Working Papers in Economics

This inquiry seeks to establish that although hardly recognized, Robert Torrens’ contributions prove significant and also provided bases for advances later credited to David Ricardo. In his first published work, An Essay on the External Corn Trade [1815], Torrens discusses at length the negative consequences of Britain’s Corn Laws, based upon the practice of restricting foreign corn imports. Through this prescient work, Torrens should be considered as the first to advance several concepts and principles that prove foundational for classical economic thought. Though attributed to David Ricardo, the principle of comparative advantage was actually first described by Torrens and another …

Working Paper No. 31, Marx And Proudhon: Two Visions Of Socialism, Lillian Garcia

Working Papers in Economics

This inquiry seeks to establish that Karl Marx and Pierre-Joseph Proudhon espoused fundamentally different visions of socialism. Marx regarded Proudhon with initial enthusiasm and joined the left at large in celebrating his 1840 essay, What is Property? However, in 1846, when Proudhon attempted to solve the problems of capitalism in his work, System of Economic of Contradictions or The Philosophy of Poverty, Marx took to his pen for an unsparing attack, authoring his The Poverty of Philosophy. At the crux of their split were two analyses of the status of labor and two competing prescriptions for change. While …

Working Paper No. 24, Economic Thought During Japan’S Meiji Era, Karson M. Pence

Working Papers in Economics

This inquiry seeks to establish that it was Fukuzawa Yukichi who played a key roled in developing ideas that assisted the modernization of Japan, leading up to and especially after the Meiji Reformation of 1868. In An Outline of a Theory of Civilization [1875], Fukuzawa advances a clear understanding that Japan should make the shift from a producer nation to a manufacturer nation, and without having to bear the costs of importing vast sums of foreign capital. Under suspicion that the 250 year rule of the Bakufu left the Japanese economy stagnant and weak, Fukuzawa asserted that the only means …

Impulsivity In Science: Students' Beliefs In Their Science Abilities With And Without Adhd Symptomology, Deza'rae M. Collins, Lisa Marriott

University Honors Theses

Impulsivity has been negatively associated with students’ beliefs in their abilities in science (e.g., science self-efficacy). Impulsivity and risk tasking are known to be characteristics of Attention Deficit Hyperactivity Disorder (ADHD), but it is unknown whether science self-efficacy is altered in students exhibiting ADHD symptomology. STEM beliefs (i.e. science, technology, engineering, and math) were hypothesized to be more challenging for impulsive and risky students who exhibited symptoms of ADHD, since that the fields require the practice of repetitive tasks and coordinated attention to task performance. Impulsivity, ADHD symptomology, and risk taking behavior were assessed in a cross-sectional sample of 612 …

Use Of Connectotyping On Task Fmri Data Reveals Dynamic Network Level Cross Talking During Task Performance, Valeria Vazquez-Trejo, Binyam Nardos Phd, Bradley Schlaggar Md, Phd, Damien Fair Pa-C, Phd, Oscar Miranda-Dominguez Phd

University Honors Theses

Task functional MRI (fMRI) has greatly impacted our understanding of brain functioning, enabling the identification of brain areas associated with particular tasks. Current methods of fMRI analysis only display regional differences in activation. We propose that there are also dynamic functional connectivity changes occurring between systems which support the performance of a task.

A recently developed method, termed connectotyping, is able to efficiently model functional brain connectivity and has the potential to track changes in brain dynamics in individuals. Our work aims to use connectotyping to reveal the progression of temporal brain connectivity patterns in task fMRI.

Twenty-four participants (12 …

Interventions In Type 1 Diabetes: A Systematic Review And Meta-Analysis Examining Factors That Lead To Improved Glycemic Control, Christopher E. Larsen

University Honors Theses

Uncontrolled type 1 diabetes puts adolescents at an increased risk for cardiovascular disease, retinopathy, neuropathy, reduced brain mass, and reduced life expectancy among other symptoms. Clinically, behavioral interventions are staged for patients with uncontrolled type 1 diabetes. Meta-analyses of these interventions have yielded non-significant differences in overall glycemic control, and have yet to identify any significant moderators of outcomes. The goal of this study was to update and improve upon past meta-analyses, and evaluate potential moderators. 28 RCTs of behavioral interventions in type 1 diabetes evaluating glycemic control were identified. Variables within interventions were collected and reviewed systematically, separating interventions …

Stratigraphic Evidence Of Cascadia Earthquake Induced Relative Sea Level Change At Netarts Bay, Oregon, Jazzy M. Graham-Davis

University Honors Theses

I present new dendrochronologic age constraints from a buried tree slab collected below the marsh surface at Netarts Bay, Oregon. A ghost forest is apparent at low tide on the central-eastern margin of Netarts Bay. 120 meters inland from the bay front, incision into marsh exposures reveal buried trees protruding 1.43 meters below the marsh surface and extending from the 4th layer of buried marsh soils overlain by tsunami sands. I interpret this stratigraphic sequence as evidence for tectonic subsidence and abrupt paleotsunami inundation. Prior research at the southern marsh at Netarts Bay has correlated Cascadia Subduction Zone (CSZ) ruptures …