Digital Commons Network^™

Gender Differences In Social Presence In Gender-Segregated And Blended Learning Environments In Saudi Arabia, Abdullah Eid Alotaibi

Theses and Dissertations

The present study aimed to achieve one of the goals of the Saudi Arabia Vision 2030, which is the improvement of the quality of teaching approaches and learning outcomes. Additionally, the vision strives for equality among students in all educational institutions, including equality among men and women, who are mostly segregated in all aspects of life (e.g., education). One of the major issues in the online portion of blended learning environments is the lack of social presence. Therefore, the present study used a quantitative, cross-sectional survey design to investigate the influence of gender on the perception of social presence levels …

Development Of Image Processing Techniques For Core-Scale Characterization And Synthetic 3d-Printed Core Replicas, Ahmed Galal Alqassaby Almetwally

Theses and Dissertations

Fluid-flow physics in porous media has been continually simplified by assuming isotropic homogeneous media with minimal rock-fluid interactions. Such simplification did not reflect reality and retained the ability to understand the flow behavior essence in unconventional reservoirs. The developed physics should be reevaluated on ideal porous media, indeed, which has minimal geometrical and interaction uncertainties. Therefore, image processing techniques were utilized to processs the CT scans of core samples to construct ideal 3D-printed replicas for coreflooding experiments and simulation models. The results from both were then compared for vcalidation and cross check. Methods, Procedures, Process: Grayscale CT-scan of a Berea …

Perceived Social Status And Gender Role Beliefs Impact On Self-Efficacy And Quality Of Life Of Women Of Color, Dependent Visa Holders In The United States, Surjya Bajpayee

Theses and Dissertations

A large body of literature evaluates the impact of acculturation on immigrants in the U.S. but fails to capture the conditions of their spouses (F2/H4 visas). The gendered immigration policies restrict the spouses who are predominantly women from employment, higher education, and any privileges that come with it. To analyze what variable might impact their psychological health, this paper evaluates gender and class factors. The study also explored show much these women are involved in household decision making process. Independent t tests and correlational analysis is used to assess the impact of perceived social status and gender role beliefs on …

Perspectives Of Beginning Teachers From Generation Z: A Narrative Study, Troy Bartman

Theses and Dissertations

A wide range of ages in teachers exist in the field of education. New teachers from Generation Z is one specific category that has received little attention. Who are these new teachers? What experiences have they grown up with being from this generation? What might we learn about them that can help us offer better support, training, and guidance to ultimately create better learning environments for students? The purpose of this study was to gain a deeper understanding of the perspectives that new teachers from Generation Z have on teaching, learning, and teacher development. As the newest generation entering the …

Reflection And Transmission Of Electromagnetic Pulses At A Planar Dielectric Interface: Theory And Quantum Lattice Simulations, Abhay K. Ram, George Vahala, Linda Vahala, Min Soe

Electrical & Computer Engineering Faculty Publications

There is considerable interest in the application of quantum information science to advance computations in plasma physics. A particular point of curiosity is whether it is possible to take advantage of quantum computers to speed up numerical simulations relative to conventional computers. Many of the topics in fusion plasma physics are classical in nature. In order to implement them on quantum computers, it will require couching a classical problem in the language of quantum mechanics. Electromagnetic waves are routinely used in fusion experiments to heat a plasma or to generate currents in the plasma. The propagation of electromagnetic waves is …

Career Aspirations Of Collegiate Aviation Students, Shayne A. Daku

Theses and Dissertations

Three studies in this dissertation examined the career aspirations of collegiate aviation students: student motivation with respect to career aspirations, military aviation career aspirations, and student perceptions of career pathway programs. Findings from each of these studies are valuable to students pursuing careers in aviation and industry partners seeking to fill pilot positions. Each of these reports highlights the desire of current collegiate aviation students to have a career that supports their values of remaining close and connected to their family and friends. In the first research, aviation graduates report crew base and hourly pay as the most important factors …

High Voltage Design And Evaluation Of Wien Filters For The Cebaf 200 Kev Injector Upgrade, Gabriel Palacios-Serrano, Helmut Baumgart, C. Hernández-García, P. Adderley, J. Benesch, D. Bullard, J. Grames, A. Hofler, D. Machie, M. Poelker, M. Stutzman, R. Suleiman

Electrical & Computer Engineering Faculty Publications

High-energy nuclear physics experiments at the Jefferson Lab Continuous Electron Beam Accelerator Facility (CEBAF) require highly spin-polarization electron beams, produced from strained super-lattice GaAs photocathodes, activated to negative electron affinity in a photogun operating at 130 kV dc. A pair of Wien filter spin rotators in the injector defines the orientation of the electron beam polarization at the end station target. An upgrade of the CEBAF injector to better support the upcoming MOLLER experiment requires increasing the electron beam energy to 200 keV, to reduce unwanted helicity correlated intensity and position systematics and provide precise control of the polarization orientation. …

Simulation Studies On The Interactions Of Electron Beam With Wastewater, X. Li, S. Wang, Helmut Baumgart, G. Ciovati, F. Hannon

Electrical & Computer Engineering Faculty Publications

The manufactured chemical pollutants, like 1,4 dioxane and PFAS (per- and polyfluroralkyl substances), found in the underground water and/or drinking water are challenging to be removed or biodegraded. Energetic electrons are capable of mediating and removing them. This paper utilizes FLUKA code to evaluate the beam-wastewater interaction effects with different energy, space and divergence distributions of the electron beam. With 8 MeV average energy, the electron beam exits from a 0.0127 cm thick titanium window, travels through a 4.3 cm distance air and a second 0.0127 cm thick stainless water container window with 2.43 cm radius, and finally is injected …

"The Last Major Front": Special Education's Transition To Adulthood And North Dakota, Matthew David Mccleary

Theses and Dissertations

The thesis examines the development and implementation of special education’s transition policy in the United States and North Dakota from the 1980s to the 1990s. Researchers have primarily sought to further evidence-based practices in preparing adolescents with disabilities for adulthood, but the history of this effort has rarely been discussed. In the late 20th century, policymakers, researchers, and educators attempted to turn around negative socio-economic outcomes for people with disabilities by helping youth with disabilities and their families plan for the future and get connected to post-school services and employment. Assumptions about people with disabilities influenced transition programming and the …

Validity Of A Culturally Sensitive Depression Scale For Native American Youth, Todd Phelps

Theses and Dissertations

This research investigated the validity of a Culturally Sensitive Depression Scale (CSDS). Data were collected on 30 Native American youth living throughout South Dakota. Participants underwent a condensed semi-structured clinical interview for Major Depressive Disorder to confirm diagnosed (n=16) or undiagnosed (n=14). Participants completed two depression scales: the Columbia Depression Scale (CDS) and the CSDS. Both scales were tested for criterion-related validity via concurrent validity which analyzed each scale’s accuracy in categorizing diagnosed and undiagnosed individuals. Construct validity was tested via convergent validity through the Pearson product-moment correlation between the CDS and CSDS. Area Under Curve (AUC) analysis tested each …

An Evaluation Of Ci Asteroid Regolith As A Plant Growth Medium For Space Crop Production, Steven Jon Russell

Theses and Dissertations

Asteroids are small, undifferentiated bodies that materialized during the formation epoch of the solar system. With a concerted effort to establish a long-term presence in space, crewed missions to asteroids should not be ignored. A critical aspect of human missions is self-sustainability, primarily growing crops via in-situ resource utilization. CI carbonaceous asteroids are a primitive type of asteroid that retain elements found during that early solar system formation. More importantly, the regolith on these asteroids contains soluble elemental nutrients, such as phosphorous and potassium, that crops can use for growth and development. This thesis focuses on the ability of CI …

The Impact Of Social Anxiety On Co-Witness Suggestibility, Susan Schober

Theses and Dissertations

Misleading post-event information, especially presented through co-witness discussion, has consistently shown to be a powerful way to alter a witness’s memory for an event. Less is known about how misleading co-witness information affects those with specific individual difference traits, however. The current study analyzed the impact of social anxiety on susceptibility to co-witness misinformation and memory conformity (i.e., co-witness suggestibility). Participants viewed a short film of a simulated home robbery and some discussed the film with a confederate posing as a co-witness. During the discussion, the confederate introduced either accurate or misleading information about events in the film. After the …

Riparian Vegetation Changes Along The Red River Of The North: 1997-2018, Laura Akindo

Theses and Dissertations

Riparian zones are areas along waterways that are typically covered by woody vegetation, herbaceous plants, and grasses. Flooding is an important process in riparian habitats as it continuously causes net gains and losses of substrates in riparian communities that determine the productivity of the riparian area. Most notably by providing new areas on the floodplain to be colonized by riparian plant species. Sometimes extreme flooding events can temporarily devastate riparian communities, as in most cases the area recovers quickly. This study evaluated the effects of the 1997 Red River flood on the woody cover in the riparian area cover along …

Exploring The Reality Of Media Relations In Governmental Organizations In Saudi Arabia, Turki Ali Alrashid

Theses and Dissertations

Media relations in Saudi governmental organizations play an important role in transmittingnews and messages of organizations to the publics. Although the field of media relations in Saudi Arabia is important, there is a lack of scientific studies in this area. Therefore, this dissertation studied the reality of media relations in Saudi governmental organizations. The goal of this study was to understand the strengths, weaknesses, and opportunities that could positively impact the development of media relations in Saudi governmental organizations. This dissertation used a quantitative research method through the use of a Qualtrics survey in order to ask Saudi government organizations' …

Understanding Decision-Making Styles Of Part 135 Pilots In Remote Settings And Their Impact On Aviation Safety: A Qualitative Enquiry Of Alaskan Operational Environments, Dana Atkins

Theses and Dissertations

Aviation is a vital component of the State of Alaska’s transportation system. Air transportation is frequently the only means to move goods, services, and people across the state. Historically, air taxi and non-scheduled/charter air operators (14 C.F.R. Part 135) form the bulk of service providers in Alaska and have poor operational safety records through high rates of accidents. The problem is still prevalent despite numerous initiatives by the Federal Aviation Administration to reduce adverse safety events. Accident investigation reports have nominally attributed causal factors of these accidents to pilot error and at-risk behaviors such as violations. Extant research in aviation …

Enzymatic Approach To Improve Tensile, Freeness And Brightness, Yao Ntifafa

Theses and Dissertations

Weak tensile strength is usually source of web breaks on paper machines and converting machines. Web break, in general, is due to poor hydrogen bonding between the fibers. Web break which is ultimately a downtime and a waste can be reduced through enzymatic approach. In order to increase the tensile strength of the paper, it necessary to determine the amount and the conditions in which the enzymes yield a better sheet strength.A central composite design approach, using dosage, time and temperature as factors, was used to study the effects of the enzymes on the sheet strength; the pulp used is …

An Exploratory Factor Analysis Of The Collectivist Coping Styles Inventory Using An Adult American Indian Sample, Micah Louis Prairie Chicken

Theses and Dissertations

The present study examined the factors that emerged from the Collectivist Coping Styles (CCS) inventory using an exploratory factor analysis with an adult American Indian sample. The CCS inventory was originally developed using a sample of Taiwanese college students by an American-led research team and published in 2006. The CCS consists of 30 collectivist culture-specific coping items, among other indices (e.g., trauma resolution index). Coping has largely been theorized, and subsequently measured, from a White American individualist perspective. In response, a number of researchers with interests in non-White ways of being have begun broadening this area by examining coping from …

Participatory Action Research: Managing Smartphones In The Secondary Classroom, Andrea Simon

Theses and Dissertations

This research explores potential benefits and challenges associated with smartphone use amongst students in the high school classroom and policy considerations for the management of these devices. Managing student usage of smartphones in the classroom can be a complex challenge. Outside influences have infiltrated the learning space like never before, and student access to resources and distractions multiplies daily. Students need support and guidance in learning how to effectively manage their devices as they face life in the age of technology. Likewise, teachers need support in creating and applying effective policies and strategies to manage these devices in the classroom. …

Accurate Threshold Estimation For Electronic Control Unit (Ecu) Signatures In Vehicular Environments, Niroop Sugunaraj

Theses and Dissertations

Rapid digitization of modern vehicles using electronic control units (ECUs) has made the modern automobile to realize autonomous operations. ECUs within a vehicle are capable of handling multiple functions within the vehicle pertaining to vehicular control, infotainment system, or electronic control of mirrors, wipers, and seats. Such data are relayed through various communication buses within a vehicle that allows for wired communication between multiple ECUs when referring to in-vehicle communication or wireless communication between a vehicle's ECUs and other vehicles and/or roadside infrastructure. Though network traffic can be intercepted from these communication buses, identifying an ECU responsible for a particular …

An Assessment Of Remotely Piloted Aircraft Training Methods And Measures, Zachary Waller

Theses and Dissertations

The collegiate aviation programs of higher education are seeking to adapt their capabilities and expertise toward educating a generation of airmen who will operate Remotely Piloted Aircraft (RPA). The collection of studies presented in this dissertation address this interest as higher education programs investigate the value of modalities and pedagogies, tune the application of instructional aids, and assess novel measurements for how students interact with their training. Three studies were completed in building this program of research. Study I, Waller et al. (2016), was published in a peer-reviewed journal and is adapted for reprint with permission. Study I established the …

Characteristics Of School Success As Identified By School Leaders, Dave Wheeler

Theses and Dissertations

The purpose of this study was to examine how school leaders in the state of North Dakota define success in their schools or districts without using test scores as a measurement. The information shared by these school leaders will be shared with other school leaders in North Dakota with the intent that test data becomes less of a driving force in schools and student engagement, while positive climate and culture become more emphasized for school and district leadership.

This study’s purpose was to diminish the emphasis on state assessment as a singular resource that defines success in schools. Communities, staff …

Latinx Immigrant Health And Well-Being In The United States: Examining Legal Status As A Social Determinant Of Health, Ayli Carrero Pinedo

Theses and Dissertations

Introduction: Much of the body of research on Latinx immigrant health has focused on border states or coastal shoreline regions and less is known about the health experiences of Latinx immigrants in the Midwest. Objective: Using a social determinants of health framework, the first aim of the study was to examine a model of Latinx immigrant health and to determine whether the relations from acculturation and enculturation to subjective health and well-being are partially or fully mediated by perceived discrimination and acculturative stress. The second aim was to investigate if and how legal status moderates the relations within the retained …

Saudi Arabia’S Reputation From The Point Of View Of The American People In The United States Compared To That Of The Islamic Republic Of Iran And Turkey, Hamed Ateeq Alghamdi

Theses and Dissertations

Background: The reputation of a country has a significant influence on competitiveness, public diplomacy, international perception, and international relations. The aim of this research was to investigate Saudi Arabia's reputation from the point of view of the American people in The United States, compared with American perception of the Islamic Republic of Iran and Turkey. Method: A sample of 378 participants completed the 33-item questionnaire using a 7-point Likert scale. Descriptive and inferential statistics utilizing SPSS Version 26 were used to analyze the data. Results: Repeated measures ANOVA and paired t-tests revealed significant differences in the perception of Saudi Arabia …

Educators’ Perceptions Of Youth Behavioral Health Training In Schools Across North Dakota, Elisa Laura Diederich

Theses and Dissertations

During the 2019 North Dakota legislative session (the 66th Legislative Assembly), Senate Bill 2149 was introduced to amend the North Dakota Century Code (NDCC) at Title 15.1 Elementary and Secondary Education, Chapter 07 School Districts, Section 34, which addresses behavioral health (including mental health) in an educational setting. This bill was enacted.The purpose of this flexible design qualitative study was to investigate experiences teachers, principals, and school counselors have had related to their students’ mental and behavioral health. Furthermore, this study investigated the perceptions North Dakota educators have had related to professional development on student behavioral health. Finally, this study …

Narratological Limitations Of Telling Trauma: A Case Study Of Lorena Bobbitt And Sexual Assault, Brittney Christy

Theses and Dissertations

There are many barriers that women face when they tell their stories of sexual assault, namely—that they will not be believed. A number of factors hinder believability, many of them related to the broader relationship that narrative plays in our lives. Narrative expectation, cultivated by the texts we consume, shapes what we find believable or “tellable” in the words of scholar Amy Shuman. Difficult narratives are often rendered “untellable” because they contain unfamiliar patterns or because they fall outside recognizable frameworks of understanding. Sexual assault narratives are rendered untellable for many reasons, including social misunderstanding of the problem and the …

North Dakota's New Frontier: Unmanned Aircraft, Matthew D. Dunlevy

Theses and Dissertations

Unmanned Aircraft, or drones, represent a modern-day frontier, one that is, as yet, neither fully explored nor fully developed. The state of North Dakota has moved into the frontier and is deeply involved in its exploration and development. The state has invested tens of millions of dollars in the Unmanned Aircraft Systems (UAS) industry, an investment that has helped to attract tens of millions of additional dollars from military sources and from private business firms. The University of North Dakota’s John D. Odegard School of Aerospace Sciences, long-recognized as among the leading aviation schools in the nation, is at the …

Eating Disorder Symptoms On Female Collegiate-Level Athletes And Non-Athletes, Kennedy Victoria Kidd

Theses and Dissertations

In previous research, it found that the risk of developing an eating disorder (ED) is much higher in females compared to males (Dunca, Ziobrowski & Nicol, 2017; Raevuori, Keski-Rahkonen, & Hoek, 2014; Lewinsohn, Seeley, Moerk, & Striegel-Moore, 2002). Similarly, research has shown that the prevalence of EDs is much higher in female athletes compared to male athletes (Johnson, Powers, & Dick, 1999). Despite the risk of developing an ED being higher in females, research has not provided a strong understanding of the prevalence of EDs comparing female student-athletes and female student non-athletes. There is research that shows that athletes may …

Teacher Demoralization, Mental Health, And The Moderating Effect Of Shame Resilience, Chelsie Terez Hultz

Theses and Dissertations

The first purpose of this study was to extend the literature on teacher demoralization (Santoro, 2011) by providing the second attempt to measure the phenomenon done by Carlson-Jaquez (2016). Exploratory factor analysis was used to analyze construct validity of an original self-report instrument for the assessment of teacher demoralization analyzed as three sub-scale constructs: shame, lack of autonomy, and uncertainty. Data was collected from a population of K-12 educators in one mid-western public-school district. Participants completed a self-assessment survey shared via email and rated their level of agreement on twenty-one questions. Five demographic questions began the survey’s 26 questions. Data …

Effects Of Hiv-1 Gp120 On Intracellular Levels Of Iron And Reactive Oxygen Species: Implications For Lysosomal Stress, Koffi L. Lakpa

Theses and Dissertations

Approximately 1.2 million people in the U.S.A are living with HIV-1. The development of antiretroviral therapeutics has increased the life expectancy of people living with HIV-1 (PLWH). Yet, there is a growing concern for aging HIV-positive individuals because about 50% of PLWH develop neurological impairments, termed HIV-associated neurocognitive disorders (HAND). There are no treatments for HAND and the mechanisms underlying its pathogenesis remain unclear. Several factors are implicated in HAND pathogenesis, such as HIV-1 coat protein gp120, endolysosome and mitochondrial dysfunction, and elevated levels of reactive oxygen species (ROS). Endolysosomes are acidic organelles that contain readily releasable stores of cations, …

Girls In Stem, Carrie Leopold

Theses and Dissertations

The recruitment and retention of women in STEM have historically been a struggle. Several causes, such as social factors, stereotypes, and classroom environments, all play a role (Blackburn, 2017). Recruitment efforts are often focused on middle school students. Nevertheless, research shows that children as young as kindergarten already have a preconceived notion about math (Ceci et al., 2014), such as it is too difficult or girls are not 'smart enough' to be successful. By the time some of these girls enter middle school, it can be challenging to change their mindset. Therefore, we need to focus not only on the …