Digital Commons Network^™

Latine Dual Language Bilingual Education Teachers' Work Experiences, Nelly Noemi Patiño Cabrera

Dissertations and Theses

Given the increasing concern about the scarcity of Dual Language Bilingual Education (DLBE) teachers, it is crucial to understand the trends in teacher retention and attrition from the perspective of DLBE teachers themselves. DLBE teachers departing from their jobs imposes a significant burden on schools and students and affects the implementation of DLBE programs. To delve into this issue, this critical qualitative study focused on the work experiences of Latine K-5 Spanish/English DLBE teachers. Specifically, this study involved six participants divided into two groups of DLBE teachers in the teaching trajectory: three Latine K-5 Spanish/English DLBE teachers currently teaching in …

The Arab Spring Uprisings In Geopolitical Context, Jake Alan Rutledge

Dissertations and Theses

The question of why revolts, civil wars, and social unrest occur is central in the field of political science. This paper asks that question in the specific context of the 2011 Arab Spring uprisings as a revolutionary wave. Many theories of revolution and social unrest locate their causes in the internal characteristics of the country where they take place, such as the country's demographics or level of economic development. This paper examines the external situation of a country: its relationships with other states and the international community. This paper examines eighteen Arab countries in the Middle East and North Africa …

Mmwave Rat Optimization: Mac Layer Initial Access Design And Transport Layer Integration, Suresh Srinivasan

Dissertations and Theses

MmWave Radio Access Technology (RAT) is a promising technology for wireless communication due its large bandwidth and is already being deployed in 5G cellular and emerging WiFi technologies. MmWave systems use highly directional beams with narrow beamwidths to overcome the high path loss associated with their frequency bands. A mmWave radio can be used either in a standalone mode (where all radios use the same technology) or simultaneously with other technologies such as LTE and low frequency WiFi in a communication mode commonly referred to as integrated mode. This thesis proposes two methods to optimize mmWave RAT performance in both …

Understanding Quadrature Modulation By Designing A 7mhz Iq Test Bench To Encode The Polybius Square, William Lee Bradley

Dissertations and Theses

This thesis outlines the design of an IQ Test Bench that allows for experimentation of quadrature modulation techniques. Quadrature modulation utilizes two signals I and Q, 90° out of phase from each other, to greatly increase communication data rates. Using Desmos, a thorough mathematical analysis of waveform mixing is presented, and constellation diagrams are plotted from the results. From this an ancient fire signaling technique known as the Polybius Square is encoded into the system. The IQ Test Bench is built from fundamental components that would be contained within an RFFE: a local oscillator and two frequency mixers. The LO …

2020 Racial Justice Protests In Portland, Or: An Analysis Of Radical Place-Making And Police Tactics In A Neighborhood Context, Claire Brumbaugh-Smith

Dissertations and Theses

During the George Floyd protests, police used tactics infrequently seen until now, including the use of tear gas and sonic weapons in contested spaces. Police tactics are presumably sanctioned by policing directives, but little is known about how these tactics may vary across space at a granular spatial level, or how they might be normalized over time. To address this knowledge gap, I used the concept of repertoires of protest control to characterize and quantify the tactics of the Portland Police Bureau (PPB) deployed on racial justice protesters during the 2020 racial justice protests and describe the role of these …

Individual And Structural Contributors To Implicit And Explicit Anti-Muslim Bias In The United States, Aeleah M. Granger

Dissertations and Theses

This dissertation consists of two manuscripts addressing the multifaceted nature of Islamophobia in the United States by examining explicit and implicit anti-Muslim bias on individual and structural levels. The first manuscript tests an ideology-threat-attitude-behavior model by estimating the simultaneous mediating effects of threat perceptions on the relationships between individual differences in ideology, Islamophobia (fear of Muslims), and support for an anti-Muslim police surveillance policy. This study (N = 603) finds that individuals who are higher in Social Dominance Orientation (SDO), Right-wing Authoritarianism (RWA), and Nationalism are more likely to perceive Muslims as realistic (power), symbolic (value), and terroristic (safety) …

Pcl And Dmso2 Composites As Biomaterials For Additive Manufacturing, Jae-Won Jang

Dissertations and Theses

Tissue engineering provides a viable solution to address the shortage of organ donors for allograft transplants. Its primary objective is the replacement or regeneration of damaged tissues which is developed by combining living cells, a scaffold, and a bioreactor. Among these components, the scaffold serves as an artificial extracellular matrix (ECM), which plays a pivotal role in supporting cell adhesion, proliferation, differentiation, and overall tissue development. Additive manufacturing (AM), commonly referred to as three-dimensional (3D) printing, emerges as a promising method for scaffold fabrication due to its capability to create complex and repeatable geometries.

Polycaprolactone (PCL) has been one of …

Sustainable Leadership During Turbulent Times, Paul Marietta

Dissertations and Theses

Teachers, administrators, and staff in schools are leaving the profession at unprecedented rates. The principal pipeline has significantly decreased in the past years and our public school system is at a breaking point. Now more than ever, we need to focus on sustainable leadership during turbulent times and helping the organization, students, families, teachers-and also their leaders-thrive. This dissertation proposal follows the Portland State University (PSU) multi-paper format which comprises a compilation of three papers in a journal article style format, with sole or multiple authors, and although PSU policy does not require it, the topic of the papers in …

Critical Thinking Skills In Pre-Service Teachers And Their Coursework: Investigating The Preparation Of Teachers In The Rural Midwest With Humans, Ai, And Cyborg Researchers, Tiffany Ellen Rose Shonerd

Dissertations and Theses

Despite the plethora of research and literature regarding the relationship of critical thinking and its key role in promoting learning, little research investigated the teaching of critical thinking to pre-service teachers in their coursework along with how they facilitate it in their students. As future teachers worked towards completing their teaching degrees, student teaching permitted them to work in live classroom settings with veteran teachers as mentors. Markedly, scholars argued that future teacher programs needed to understand the importance of critical thinking and utilize facilitation strategies in classroom settings. In this way, the live classroom setting could then create students …

Critical Thinking Skills In Pre-Service Teachers And Their Coursework: Investigating The Preparation Of Teachers In The Rural Midwest With Humans, Ai, And Cyborg Researchers, Tiffany Shonerd

Dissertations and Theses

Despite the plethora of research and literature regarding the relationship of critical thinking and its key role in promoting learning, little research investigated the teaching of critical thinking to pre-service teachers in their coursework along with how they facilitate it in their students. As future teachers worked towards completing their teaching degrees, student teaching permitted them to work in live classroom settings with veteran teachers as mentors. Markedly, scholars argued that future teacher programs needed to understand the importance of critical thinking and utilize facilitation strategies in classroom settings. In this way, the live classroom setting could then create students …

An Examination Of The Knowledge, Utilization, And Attitudes Of Curriculum Directors Of Large School Districts In The Upper Midwest Regarding Research And Evidence-Based Reading Programs, Jill Hansen

Dissertations and Theses

This study investigates the influence of knowledge, utilization, and attitudes of research on the choices made by K-5 curriculum directors in large Upper Midwest school districts when selecting reading programs and practices. A survey, sent to curriculum directors, addresses their knowledge, use, and attitudes towards research and evidence-based reading programs. The study explores demographic differences and reviews the historical context of educational policies. Findings reveal a mixed level of knowledge, positive trends in research use, and overall positive attitudes. Differences between master's and post-master's groups highlight the impact of advanced education. The study emphasizes the importance of ongoing professional development …

American Eyes, Heather Phillips

Dissertations and Theses

American Eyes, a memoir in essays in the vein of Elisabeth Eave’s Wanderlust: A Love Affair with Five Continents and Rebecca Solnit’s A Field Guide to Getting lost, examines how the desire to travel, quest, and be transformed is complicated by conventional notions of home, gender, success, and culture. In a collection that spans twenty-five years in Thailand, Indonesia, the United Arab Emirates, and the U.S., the author ponders the ramifications for women who eschew traditional notions of home and family to instead live life “on the road.” Exploring themes of travel, transformation, culture, identity, and (dis)embodiment as an American …

A Pilot Study Exploring The Effectiveness And Feasibilty Of The Peers® Intervention In A Rural/Non-Metropolitan Setting, Blake Elvrum Warner

Dissertations and Theses

Autism Spectrum Disorder (ASD) is classified as a neurodevelopmental disorder characterized by deficits in social communication and restricted and repetitive patterns of behavior. Autistic adolescents often experience a myriad of mental health difficulties which are worsened by lower overall levels of social support. Higher rates of mental health difficulties are reported in rural and non-metropolitan areas where resources are less readily available. Interventions aimed at increasing social skills in autistic adolescents have proven to be an effective way to increase levels of social interaction and support. The Program for the Education and Enrichment of Relational Skills (PEERS®) intervention was developed …

Implementing The Science Of Reading Concepts: A Case Study On Perceptions Of Pre-Service Preparations And Readiness Levels At Midwest Universities, Jerri L. Birger

Dissertations and Theses

In 2000, the National Reading Panel published a report stating that reading instruction should include phonemic awareness, phonics, fluency, vocabulary, and comprehension instruction that is explicit and systematic. Despite this recommendation, more than half of fourth graders in the US continue to lack proficiency in reading each year. Further, studies showed that pre-service teachers lacked the training and preparation to demonstrate mastery of the concepts and provide effective literacy instruction. This study employed a case study design to explore the programming surrounding pre-service teacher preparation over the last ten years, their relationships with cooperating teachers, and how that affects perceived …

Utopia And Dystopia In Shakespeare’S Plays, Wenhui Duan

Dissertations and Theses

Writers and literary scholars’ interest in utopian fiction has increased in the recent decades, although the term originates from Sir Thomas More’s 1516 Utopia. Many Shakespeare scholars show interest in studying Utopia in Shakespeare’s comedy The Tempest, but not many scholars study Utopia in other Shakespeare’s plays. The contrary to Utopia is Dystopia, which appears as a term in 1952, however, More has set out elements of Dystopia in his 1516 Utopia. Few scholars study Dystopia in Shakespeare’s plays. In three chapters, this thesis compares Utopia in two of Shakespeare’s comedies and Dystopia in two of Shakespeare’s tragedies from the …

Impacts Of State Needs-Based Aid On Residency (In-State) Enrollments, Scott Pohlson

Dissertations and Theses

The debate over the effectiveness of various methods of financial aid dates to the 1960s with continued uncertainty on the impacts it has on college enrollment (Hansen 1983). Previous studies noted that states are adopting various financial aid programs with some focused on the merit-based aid program which traditionally has benefited higher-academic achieving students who come from higher income families (McLendon, Tandberg, & Hillman 2014). Then there are other states that have focused more on increasing their state funding on lower-income families via needs-based aid programs (McLendon, Tandberg, & Hillman 2014). However, these studies have not focused on the relationship …

Finding The Dream Job Or Finding Another Dream: Work Volition And Goal Reengagement As Predictors Of Work-Fulfillment, Wellbeing And Calling, Julia Price-Lee

Dissertations and Theses

Work is prominent in adults’ lives, and their opportunity to choose the work they prefer predicts key work and wellbeing outcomes (WWO), especially their sense of meaning in work and wellbeing. Work choice opportunities also influence a sense of calling. However, finding and keeping preferred work is often difficult when adults are also navigating finances, marginalizing systems, and non-work priorities. Work volition (WV) measures perceived freedom regarding work options and predicts the quality of work that people find and their wellbeing within and beyond work. Foundational theoretical models suggested that having safe and reliable work, known as decent work (DW), …

Teacher's Perception Of Emotional Intelligence In Administrators And How It Impacts Teacher Job Satisfaction In Rural Nebraska, Thomas Lee Schneider

Dissertations and Theses

This qualitative comparative case study explored teachers’ perceptions of emotional intelligence in administrators and its impact on job satisfaction. The research addressed whether teachers perceive administrators as meeting their emotional needs and how administration influences job satisfaction. Participants from two comparable rural school districts were purposefully selected and assigned pseudonyms. Data collection methods included small focus groups and journaling. Thematic analysis revealed three key themes: (a) administrative support, (b) fostering a positive culture and relationships, and (c) managing feelings of being overwhelmed or burnout. These interconnected themes underscore the importance of emotionally intelligent leadership in enhancing teacher support and overall …

Educational Attainment: American Indians/Alaska Natives Phenomenological Study Of A Northeast Nebraska Indian Reservation, Stacy Brasch

Dissertations and Theses

This phenomenological study explored the perspectives of American Indian/Alaska Native students who had all graduated from the same Northeast-Nebraska public school located on a federally recognized Indian reservation and completed at least a four-year degree. To that end, the central research question addressed by this dissertation is, “Why were these individuals successful in their educational attainment pursuits when so many of their contemporaries were not?” The two sub-research questions were (1) What supports do American Indian/Alaska Native graduates perceive as having helped to ensure their resilience and successful educational attainment? And (2) What challenges do American Indian/Alaska Native students identify …

An Uncanny Perspective: Sculptures By Martin Puryear, Jake B. Demartini

Dissertations and Theses

An Uncanny Perspective: Sculptures by Martin Puryear will demonstrate how Puryear (b.1941) both aesthetically and conceptually evokes narratives found in Sigmund Freud’s (1856-1939) theories of the uncanny, specifically signifiers of darkness, unfamiliarity and secrecy. This employment of the uncanny in sculpture aids Puryear’s ability to address a range of aesthetics and provides a striking lens through which he addresses the collective history of violence and servitude within the African American experience. In applying Freud’s theories to several works by Puryear, this thesis will reveal how elements of the uncanny activate a questioning of narratives around terror and fear. Using methods …

Fascismo Al Bivio: The Arditi Del Popolo And Civil War At The Advent Of Fascist Power, Thomas R. Discepola

Dissertations and Theses

Focused on the years immediately following World War I in Italy, the dopoguerra, this thesis revisits the entire period from 1919 to 1922 with special attention given to the largest organized, armed antifascist group, the Arditi del popolo (AdP). It argues that it was the AdP, not the Italian Communist Party (PCI), that preoccupied Prime Minister Ivanoe Bonomi and led the Socialists (PSI) to work with Benito Mussolini and other members of the Fasci di combattimento (FdC), their erstwhile nemeses, in creating a pacification agreement in the summer of 1921.

Resilience And Resistance: Culture, Conversion, And Survival Among The Stockbridge Mohicans, Mariah N. Ramdeen

Dissertations and Theses

This thesis investigates the history of conversion among the Mohican band in Stockbridge, Massachusetts from the 1730s to the 1740s. Focusing on the praying town under the ministry of Reverend John Sergeant at Stockbridge in 1736, I seek to reconstruct the resistance and survivance at the heart of the Stockbridge Mohicans’ experience. My research will explore why the Mohicans chose to establish the Stockbridge praying town and why they chose to convert to Christianity, the religion of the Puritan colonizers. I will also explore how they used their conversion to promote their own community goals. While praying towns were designed …

Experimental Investigation And Performance Analysis Of The Transformational Challenge Reactor (Tcr) System Under Various Temperature And Pressure Conditions, Ahmed Mohamed Ali Soliman

Dissertations and Theses

The Transformational Challenge Reactor (TCR) represents a significant advancement in nuclear reactor technology, taking into consideration modularity, efficiency, and safety. This study explores the coupling between thermal behavior and the coolant gas flow behavior of the TCR’s 3D-printed ceramic core under various operating conditions. Using nitrogen as a coolant, experiments were performed at pressures ranging from 20.4 bar to 40.8 bar (300 to 600 psi) and temperatures from 100°C to 300°C. The main parameters including gas inlet and outlet temperatures, the TCR wall temperature at the inlet and outlet, and flow rates, were analyzed to evaluate heat transfer efficiency and …

An Optical Aptamer-Based Carbon Nanosensor For Cortisol Detection, Jessica Kretli Zanetti

Dissertations and Theses

Cortisol is a hormone related to numerous biological functions. This hormone is primarily associated with regulating the body’s stress response, including its effects on metabolism, immune function, and energy balance. Additionally, it plays a critical role in maintaining physiological homeostasis during periods of physical or psychological stress. Consequently, it is critical to monitor levels of this hormone to understand different vital processes it can impact. This work presents the development of an optical aptamer-based carbon nanosensor for the detection of cortisol. The sensor utilizes single-walled carbon nanotubes (SWCNTs) functionalized with a specific DNA aptamer to achieve high specificity and sensitivity. …

Change Of Metal Oxidation State At High Temperature, Impact Of Temperature And Reactive Gases, Yegor Nikitin

Dissertations and Theses

The fundamental understanding of gas-solid reactions enables a wide range of applications to be developed and improved. Specifically, the use of metal-based materials is critical to ensuring robust, safe, and long-term operations. For example, in power systems where boilers are used to generate steam for heat or electricity generation the use of stainless metal alloys is critical to allow high quality steam to be produced in a very harsh environment. Alternatively, in catalysis, the use of metal doped heterogeneous catalysts are essential in achieving selectivity and conversion performance for chemical synthesis to emissions abatement. Typically, these metal alloys must withstand …

Blockchain Based Framework For Secure And Decentralized Energy Trading - Transforming Local Energy Markets For Sustainable Communities, Saurabh Sachdeva

Dissertations and Theses

The emergence of prosumers provides an opportunity for the setup of a local energy market (LEM) where individual households with distributed energy resources (DERs) can produce, store, and trade energy. Peer-to-peer(P2P) and decentralized energy trading (ET) can be implemented between the participants within or across microgrids. Several solutions based on the existing technologies have been proposed worldwide for the integration of prosumers in the existing energy setup and to enable and support ET, but these solutions present the issues of centralization, data integrity, and confidentiality, user and anonymity, and transparency. The applications of blockchain technology have recently become fascinating for …

Using Mechanical Interventions To Enhance Drug Transport To Bone Tumors, Michelle Gelbs

Dissertations and Theses

Bone metastasis occurs when cancer cells spread from a primary site to a secondary location in bone. Current treatments for metastatic bone tumors typically involve systemic chemotherapy, bisphosphonates, radiotherapy, or surgery; however, due to morphological changes in the tumor microenvironment and elevated interstitial fluid pressure, tissue penetration of therapeutic agents is often more limited in cancerous tumors compared to normal tissue. Weight-bearing mechanical loading applied to bone, as well as other mechanical stimulations such as vibration, have been shown to cause loading-induced bone deformations that increase convective transport via interstitial fluid flow. We hypothesize that mechanical loading can increase the …

Optimizing Transcranial Focused Ultrasound: Calibration, Neuro Navigation, And Bold Fmri Evidence Of Neuromodulation, Amilcar J. Malave

Dissertations and Theses

This thesis presents the development, calibration, and initial implementation of transcranial focused ultrasound (tFUS) for neuromodulation in a human study. The primary objectives were to design a system capable of delivering precise and safe ultrasound stimulation to targeted brain regions and to conduct preliminary trials to assess its effects on brain activity. A custom calibration device was developed to ensure accurate measurement of acoustic pressure, addressing challenges such as voltage alterations caused by changes in system impedance. Additionally, a neuro-navigation tool was created to facilitate precise targeting of the right subgenual anterior cingulate cortex (right sgACC), enabling accurate placement of …

Nanoparticle Stabilized Interfaces And Their Effect On Foam Stability, Nicole T. Donovan

Dissertations and Theses

No abstract provided.

On The Understanding Of The Coastal-Urban Nexus Of Weather, Air Quality And Energy, Harold Gamarro

Dissertations and Theses

Urban environments exhibit complex interactions between atmospheric processes, building energy consumption, and air quality, particularly during periods of seasonal extremes such as summer ozone peaks and winter heating. Accurate representation of these interactions in urban modeling is crucial for understanding and addressing air pollution and energy management challenges in cities. This research presents a comprehensive study that advances urban atmosphere simulations by integrating building energy dynamics, air quality, and robust multi-source observational evaluation. Leveraging the Weather Research and Forecasting (WRF) model, coupled with a multilayer building environment parameterization (BEP) and a building energy model (BEM), with an improved boundary layer …