Digital Commons Network^™

The Alzheimer's Biomarker Consortium–Down Syndrome (Abc-Ds), Benjamin L. Handen, Mark Mapstone, Sigan Hartley, Howard Andrews, Brad Christian, Joseph H. Lee, Dana Tudorascu, Christy Hom, Beau M. Ances, Shahid Zaman, Sharon Krinsky-Mchale, Adam M. Brickman, H. Diana Rosas, Annie Cohen, Melissa Petersen, Sid O'Bryant, Jordan P. Harp, Frederick Schmitt, Lauren Ptomey, Jeffrey Burns, Ira T. Lott, Florence Lai, Wayne Silverman, Charles Laymon, Elizabeth Head

Psychology Faculty Publications

INTRODUCTION: Virtually all adults with Down syndrome (DS) will accumulate the neuropathologies associated with Alzheimer's disease (AD) by age 40, with the majority having a clinical dementia diagnosis by their middle 50s. METHODS: This paper complements a 2020 publication describing the Alzheimer's Biomarker Consortium–Down Syndrome (ABC-DS) methodology by highlighting protocol changes since initial funding in 2015. It describes available clinical, neuropsychological, neuroimaging, and biofluid data and bio-specimen repository. Ten years of accomplishments are summarized. RESULTS: Over 500 adults with DS and 59 sibling controls have been enrolled since 2015 with nearly 800 follow-up visits. More than 900 magnetic resonance imaging …

The Lived Experience Of New Graduate Nurses Implementing Evidence-Based Practice In A Clinical Setting, Kimberly A. Mcfarland

Electronic Theses and Dissertations

The purpose of this qualitative interpretive phenomenological analysis study was to explore the perceptions and lived experiences of new graduate nurses (NGNs) as they implemented evidence-based practice (EBP) in clinical settings. This study addressed the problem that NGNs often lack the skills and confidence to effectively apply EBP, despite its critical role in improving patient outcomes. The research aimed to provide insight into the challenges, support systems, and strategies that influence EBP integration during the transition from student to practicing nurse. The study utilized the interpretive phenomenological analysis methodology to analyze data collected through semistructured interviews conducted via the Teams …

Gothic Monstrosity And The Historical Context Of Colonial Violence In The Borderlands In Isabel Cañas’ Vampires Of El Norte, Paulina Longoria

Theses and Dissertations

The speculative genre has become a venue for Chicanx cultural producers to narrate their own histories, preserve their cultural identities, and reaffirm their rightful place in the United States. This thesis explores the redefinition of gothic monstrosity in Isabel Cañas’ Vampires of El Norte (2023), a contemporary novel within the Latinx speculative fiction genre. The novel blurs the boundaries between the supernatural threat posed by the vampires and the human threat embodied by the Anglo American settlers as both endanger Mexicans living in the Borderlands during the Texas Revolution and the U.S.-Mexico War. Drawing from L. Heidenreich’s theoretical framework, this …

The Impact Of Politics On Romantic Relationships: Longevity, Quality, And Political Beliefs Or Candidate Choice?, Jadelyn Lopez

Theses and Dissertations

This project aimed to understand how polarization in the United States affects romantic relationships. Other studies in this area have only gauged samples that were either couples in relationships or singles. This work compared the responses of individuals based on their relationship status (in a relationship or not), to note the differences, if any, between samples. This research was conducted through surveys on The University of Texas Rio Grande Valley student population.

In understanding how political opinions affect relationship longevity, satisfaction, and whether candidate choice or opinions matter more, there were interesting findings. Regarding relationship longevity, there was a significance …

Emotional Outbursts In Latinx Autistic Youth With Intact Or Non-Intact Families; Frequency, Severity, And Socio-Demographic Correlates, Sandra Lucia Masso Hernandez

Theses and Dissertations

Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder characterized by impaired social interaction, communication, and restricted repetitive behaviors. One of the core difficulties in individuals with ASD is related to emotional outbursts. Emotional outbursts (EO) are behavioral episodes in response to situations, environmental and physiological stimuli that occur in an extreme, unpleasant, sometimes aggressive way, often disproportionate to the context. Considering the impacts that EO’s can cause in populations with neurodevelopmental disorders and on the well-being and mental health of parents/caregivers, the need arises to evaluate these populations. Due to the core characteristics of ASD (such as a rigid mentality, …

Exploring The Relationship Between Suicidal Behavior And Obesity Among Young Hispanic Adults In The United States, Nadeen Salhadar

Theses and Dissertations

The rates of obesity and suicidal behavior have continued to increase over the years among young adults in the United States. Previous research has indicated a relationship between obesity and suicidal behavior, primarily among women, yet minimal research has been done to examine factors that explain this relationship (i.e., mediators). This study investigated the role of depression, body dissatisfaction, body shame and guilt, insomnia, physical health, and social anxiety on obesity and suicidal ideation among 209 college-aged Latina women. The researcher hypothesized that there would be an indirect relationship between obesity and suicidal behavior through multiple variables. Mediation analyses via …

The Benefits Of Fantasy Book When Used As A Coping Measure Against Interpersonal Conflict In Hispanic College Women, Ruby Kaitlynn Tijerina

Theses and Dissertations

High mental health disparities among Hispanic individuals have been well-documented. One potential contributing factor to mental health challenges is interpersonal conflict, which is prevalent among Hispanic young adults. Effective interventions are needed to treat psychological symptoms associated with interpersonal conflict, and one possible approach is bibliotherapy via fantasy fiction reading. This study examined the therapeutic benefits of fantasy fiction reading compared to self-help and scholarly reading materials among 109 Hispanic college women. Participants attended two lab sessions scheduled one week apart. In Session 1, self-report measures and a reading assignment were administered to participants, while in Session …

El Cuerpo Puede Curar, Crear Y Cocinar: Analyzing Chicana Embodied Knowledge In The U.S-Mexico Borderlands, Kimberly Monserrat Grimaldo

Theses and Dissertations

The U.S.–Mexico borderlands, specifically the Rio Grande Valley, is a culturally rich site yet deeply affected by coloniality where Indigenous cultures have been erased and suppressed. The Mexican American War devastated Indigenous communities as their knowledge of healing was dismissed by Western science and predominantly buried. This history of oppression and colonization in the borderlands rendered the region with “una herida abierta,” in the words of Chicana scholar Gloria Anzaldúa. However, despite an open wound, there is potential healing that can be incited through colonial resistance within the home. Texts that convey culinary and healing epistemologies include cultural productions such …

Linguistic (In) Security And Persistence In Doctoral Studies: A Mixed-Methods Study Of The Impact Of Metapragmatic Discourses On The Persistence Of Multilingual Doctoral Students, Germaine Tondji

Theses and Dissertations

Linguistic beliefs and practices in doctoral studies have often been overlooked, partly due to the assumption that advanced students face fewer language-related challenges. However, research on multilingualism in hypernormative academic contexts suggests that linguistic concerns persist even among the most educated. Multilingual doctoral students (MDSs) operate at the intersection of multiple linguistic and epistemic systems. In English-dominant, monoglossic environments, they must not only navigate the complexities of doctoral study but also reconcile competing linguistic and epistemic identities. This study explores the role of linguistic insecurity (LI) in MDSs' doctoral persistence through a mixed-methods design. The quantitative phase draws on survey …

Plansyncc - A Construction Document Translation Software, Easton Richard Abreo, Ashton Lee Gandrup, Javier Solis

Construction Management

PlanSyncc was born from shared construction internship experiences, where the team observed significant language barriers between supervisors and tradesmen, leading to miscommunication, inefficiencies, and safety risk. Motivated by this problem, PlanSyncc developed an AI-powered translation software to bridge the gap by translating construction documents in real-time. To bring PlanSyncc to life, the team divided the project into three key deliverables: a Minimum Viable Product (MVP), a business plan, and a pitch deck. The MVP involved creating two Python-based translation codes, one for specifications and another for complex construction plans using tools like PyMuPDF, Tesseract, mtranslate, and others. The business plan …

Optimizing Low-Level Light Therapy For Skin Rejuvenation: Efficacy Of Wavelengths And Treatment Parameters In Collagen Synthesis And Aging Signs, Alejandra Sataray-Rodriguez, Zoee Castro Ojeda, Alexis Moreno Montes, Kaylahn Jones, Amal Umerani, Luna Sataray Arriaga, Zubin Mehta, Kelly Frasier

Student Publications

Low-level light therapy (LLLT), particularly using light-emitting diode (LED) devices, has been an effective and non-surgical option for skin rejuvenation, treating signs of aging such as wrinkles, collagen loss, and pigmentation. Despite promising clinical outcomes, variability in treatment parameters such as wavelength, power density, fluence, and treatment regimens remains a challenge in optimizing the therapy for optimal results. Recent studies, including a prospective, randomized, placebo-controlled, double-blinded, and split-face clinical trial by Lee et al. (2007), have demonstrated significant improvements in wrinkle reduction and skin elasticity using 830 nm and 633 nm LED wavelengths. These findings highlight the importance of wavelength …

The Global Classroom: A Phenomenological Study Of International Student Experiences In A Reimagined Intercultural Communication Course, Crystal Bock Thiessen

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

This dissertation examines the experiences of multilingual international student participants who took part in a semester-long intercultural communication course that was purposefully designed and implemented with half enrollment each of domestic and international students at a Midwestern American university. Despite university efforts towards internationalization, they often fall short of the meaningful engagement needed truly promote intercultural and mutual understanding. International and domestic students share classroom and other spaces on campus, yet they remain overwhelmingly disconnected from one another. Using phenomenology and Baker’s (2011) model of Intercultural Awareness, this study analyzed the international students’ experience in this course to learn more …

Kansas City, Kansas, Vida Davidović

Department of English: Dissertations, Theses, and Student Research

KANSAS CITY, KANSAS is a thesis that operates in the tradition of expressionist dramaturgy and playwriting, taking up themes of abuse, imperialism, war, trauma, womanhood, Balkan identities, history of the Balkans, as well as the discourses of psychoanalysis and postcolonial theory. The use of different theoretical frameworks related to both international and personal politics, which are shown to be intertwined, suggests a strong relationship between political processes in the Second World Countries that had experienced many occupations throughout their history and the way women in those countries relate to the questions of body, authority, feminity, and interpersonal relationships. The play …

Intelligent Crowdsourcing Based On Online Social Networks, Adedamola Adesokan

Electrical and Computer Engineering ETDs

The prevalence of Online Social Networks has completely changed how individuals communicate and cooperate. This dissertation explores the integration of intelligent crowdsourcing mechanisms into OSNs, focusing on game theory, reinforcement learn- ing, and social network dynamics to enhance the allocation of tasks, participation by users, and distribution of rewards. It proposes several models that utilize trust- based models, hedonic coalition games, and influencer dynamics for optimization of crowdsourcing. The major challenges to be addressed include task selection, reward distribution, and incentivizing participation, taking into consideration aspects re- lated to social influence, trust, and user engagement. The models so proposed have …

How A Garden Hoe Changed My Literacy Life: A Story Of Teaching, Coaching, And Becoming, Kelsey J. Walker

Department of Teaching, Learning, and Teacher Education: Theses and Other Student Research

In this dissertation, I explore how personal practical experiences teaching reading intervention impacted my own understanding of the role of a secondary literacy coach. Drawing on the concepts of dialogism and adult learning theory, I leveraged learning conversations to grow my own body of knowledge. The methodology of this study was done using narrative inquiry and autoethnography. This methodological blend allowed me to closely study myself as the primary participant with a unique positionality as a scholarly practitioner. I unpack the complexities, contradictions, and tensions of my lived experience through stories and vignettes set in a rural midwestern public school …

Maternal Drinking, Stress And Use Of Aggressive Parenting Over The Course Of The Covid-19 Pandemic, Jennifer Price Wolf, Bridget Freisthler

Faculty Research, Scholarly, and Creative Activity

Aims: The COVID-19 pandemic had a demonstrated impact on parenting but little is known about how parental drinking, stress, and use of aggressive discipline (a parenting behavior associated with abusive parenting and negative outcomes for children) have changed over time. We examine rates of alcohol use, stress, and aggressive discipline at three time points during the COVID-19 pandemic and investigate what maternal, child, and time-varying factors predict weekly use of aggressive parenting. Methods: We use longitudinal data from the Central Ohio Family Study (COFLS), including women (n = 234) with a child between the ages of 0–12 and recruited via …

Applying Dynamic Dyadic Systems To Explore Features Of Relationship-Centered Care Among Spanish And Non-Spanish Speaking Patients, Marie C. Haverfield, Yuwei Li, Rachyl Pines, Tyler Kyte, Daria Titova, Jennifer A. Theiss

Faculty Research, Scholarly, and Creative Activity

Objective: Relationship-centered care (RCC) positions the exchange between patient and provider as central to patient care. Due to limitations in analytical approach, how the relational exchange develops throughout the clinical visit remains unclear. Dynamic dyadic systems (DDS) perspectives overcome these limitations to reveal interdependencies and evolving patterns in turn-taking sequences within dyads. We applied DDS analyses to examine how features of RCC manifest during clinical visits with Spanish-speaking Latinx and English-speaking non-Latinx patients. Methods: We analyzed transcripts from 13 primary care visits (5 with Latinx patients, 8 with non-Latinx patients). Interaction turns totaled N = 2394 units of analysis. Dyadic …

A Framework For Quantifying The Benefits Of Electric Vehicle Infrastructure Development, Donya Negahbani

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

Under the Biden Administration’s Justice40 Initiative, a significant portion of benefits derived from federal clean transportation investments is required to be directed to disadvantaged communities. Meeting this mandate necessitates a transparent and reproducible approach that quantifies various dimensions of value and allocates them equitably. This dissertation presents a flexible framework specifically tailored for the deployment of electric vehicle charging infrastructure in Nebraska, effectively translating equity goals into rigorous spatial and economic analyses. The framework first identifies multiple distinct categories of benefit that reflect the societal value of charging access: energy savings, economic opportunities, environmental quality enhancements, and public health improvements. …

Neural Patterns Reflect Semantic Representation In Novice Sign Language Learners, Megan E. Hillis

Dartmouth College Ph.D Dissertations

How do novice language learners represent semantic information in their new language? The extent to which languages are supported by distinct or overlapping neural representations in bilinguals has been the topic of much research, but less is known about how new knowledge is integrated into established representational networks, especially at the earliest stages of language acquisition. Furthermore, most investigations have compared languages which share a modality (spoken). Signed languages can provide insight into language unconfounded by perceptual qualities that spoken languages share. Chapter 1 presents an initial study in which hearing English-speaking non-signers learned a set of nouns in American …

Computation-Driven Design And Synthesis Of Molecular Sensors For Surface-Enhanced Raman Spectroscopy In Liquids, Junhu Zhou

Dartmouth College Ph.D Dissertations

The reliable detection of molecules in liquid environments is a continuing challenge in chemical sensing and biological diagnostics. While surface-enhanced Raman spectroscopy (SERS) is well-recognized for its high sensitivity and molecular specificity, conventional platforms – based on colloidal nanoparticles or patterned substrates – have shortcomings. These conventional configurations struggle with signal reproducibility, non-uniform hotspot distribution, and, critically, restricted accessibility for large targets such as proteins and exosomes.

This thesis develops a computation-guided approach to developing next-generation SERS sensors capable of overcoming these persistent obstacles. At the heart of the study is the design and fabrication of metal-insulator-metal (MIM) nanoparticles, where …

The Impact Of Visually Presented Distractor Taboo Words During A Bilateral Attention Task, Chloe Taylor

All Graduate Theses and Dissertations, Fall 2023 to Present

Attention is a limited resource. Some events are able to capture one’s attention more efficiently than others, such as swear or sexual words. These events have preferential access to attentional resources and increase our arousal levels due to the activity of a neurotransmitter called norepinephrine. We investigate how well swear/sexual words capture peoples’ attention and interpret these effects in terms of norepinephrine activity.

Participants performed a visual task where they responded to different shapes presented while ignoring neutral or swear/sexual words presented on opposing sides of the computer screen.

Participants were significantly more inaccurate in identifying the shape present when …

Investigating The Influence Of Modern And Traditional Instructional Practices On Creating Lifelong Habits Of Music Engagement In The Prospect Mountain Schools System, Thomas D. Stevens Jr.

Doctoral Dissertations and Projects

The purpose of this study was to investigate the impact of modern and traditional pedagogical approaches on student development of music engagement and learning in the Prospect Mountain Schools system during and after high school. Student retention is critical to maintaining music programs; therefore, educators must discover ways to motivate students to continue participating in general music and ensemble courses. Combining modern and traditional pedagogical approaches creates learning experiences that inspire students to continue playing music throughout their lives, both during and after high school. One of these pedagogical practices is incorporating popular music into the classroom, which can enhance …

The Rise Of The Soviet Economy: How American Capitalist Corporations Helped Build The Soviet Communist Economic System, Craig A. Helf

Doctoral Dissertations and Projects

The aim of this dissertation is to examine the depth and scope of the relationship between American capitalism and Soviet socialism during the period of Soviet industrialization in the timeframe around the First Five-Year Plan. The research focuses on the significance of American involvement and how American corporations, personnel, and methods of innovation provided the Soviet Union a comprehensive and robust foundation to build a competitive economy not only to Europe, but to the U.S. as well. An important question of the research examines how two diametrically opposed economic concepts embodied by these respective nations partnered to achieve the goals …

Effects Of Domestic Violence On Third-Grade Students' Academic And Behavioral Performance, Leah N. Gordone

Doctoral Dissertations and Projects

The purpose of this quantitative, causal-comparative study was to investigate the relationship between witnessing domestic violence and third-grade students' academic performance and behavioral conduct, with a focus on gender differences. Additionally, the study explored the connection between exposure to domestic violence and English Language Arts achievement. The research involved 280 third-grade students and parents at the Boys & Girls Clubs of America in southwestern Georgia. Participants were part of social-emotional learning programs. Data collection included parent observation surveys, end-of-grade test scores (using the Georgia Milestones End-of-Grade assessment), and a child survey (the Violence Exposure Scale for Children – Revised). The …

School Counselors’ Lived Experiences During The Covid-19 Pandemic, Katie M. Guzman Dunn

Doctoral Dissertations and Projects

The purpose of this phenomenological study was to understand how school counselor perceptions of their roles may have been permanently impacted by the COVID-19 pandemic. Bronfenbrenner’s (1979) Ecological Systems Theory, which relates to the interactions of an individual and the environment around them, guided the study. The study’s central research was: What are public school counselors’ lived experiences regarding their role perception during the COVID-19 pandemic? Data was collected through virtual semi-structured interviews and photo elicitation with 10 school counselors who were members of the Kentucky School Counselor Association. The data collected from the interviews was analyzed using bracketing to …

The Intersectionality Of Latino/A Students With Disabilities In A Cacrep Counseling Program, Odalis Romero

Doctoral Dissertations and Projects

Diverse individuals are entering CACREP counseling programs, even so with multiple identities within their culture. The purpose of this transcendental phenomenological study was to explore the living experiences of Latino/a students with disabilities in a CACREP accredited counseling program. The participants had to be Latino/a with a disability who had attended or were attending a CACREP accredited program. Participants took part in an individual interview or a focus group, virtually via Zoom which was transcribed and analyzed ensuring trustworthiness. Moustaka (1992) data analysis was used to formulate themes based on the experiences of the participants. The four themes that arose …

Evaluating The Influence Of Self-Determination In Secondary Writing Instruction On Post-Secondary Academic Success, Mary A. Peach Partridge

Doctoral Dissertations and Projects

The purpose of this case study was to discover what components of secondary education writing instruction develop adequate self-determination for post-secondary academic writing success for first year university students at Central midwestern metropolitan area universities. The theory guiding this study was Ryan and Deci’s Self-Determination Theory as it connects the idea of developing adequate relatedness, competence, and autonomy with successful development of critical thinking and social cognitive skills for success beyond secondary education. The Central Research Question asked, “what methods of secondary writing instruction adequately develop self-determination for first year university students in the Central midwestern metropolitan area to enable …

Moral Injury And Spiritual Struggles Among Christian Adults With A History Of Substance Use And Perceived Problematic Behaviors: A Phenomenological Study, Diera Shaw-Mendez

Doctoral Dissertations and Projects

The purpose of this qualitative phenomenological study was to describe the experiences of moral injury and spiritual struggles among Christian adults from the Philadelphia tri-state area with a history of substance use or perceived problematic behaviors. Moral injury (MI) is newly studied in civilian populations. In a review of 253 studies on moral injury and substance use, only two qualitative studies explored exposure to morally injurious events amid substance use rather than as a pathway to substance use. Due to the religious characteristics of the target sample, the grounding theory for this study is Fowler’s Stages of Faith Development, which …

Setting Up Students For Success: Analysis Of Effectiveness For Mathematics Placement, Jeff Carvell, Jason N.E. Ho, Dave Klanderman, Sarah Klanderman

Faculty Work Comprehensive List

How do we effectively and equitably place students into math classes in a way that provides them the best chance of success? As many higher education institutions veer away from placement based on standardized testing, many departments are seeking placement alternatives that will properly support students. Additionally, math placement determines not only a student’s mathematics courses but also influences their progress in related fields, including physics, chemistry, engineering, and more. This paper will describe three different existing placement systems at each of our liberal arts institutions as well as the affordances and constraints of each approach. Further, we analyze data …

Breast Cancer Incidence After Hormonal Treatment For Infertility: A Meta-Analysis Of Population-Based Studies, Amal Y. Zaman, Lama S. Alrefai, Dorar F. Alharbi, Rahaf A. Khurmi, Leen M. Abuanq, Ajyal A. Aljohani, Ibrahim M. Dighriri, Nada Elnugomi

Saudi Medical Journal

ABSTRACT Objectives: To comprehensively understand the relationship between infertility medications and the risk of breast cancer (BC) in females. Methods: Relevant literature search using different databases (PubMed, The Cochrane Library, Embase, Scopus, and Web of Sciences) following preferred reporting items for systematic reviews and meta-analyses guidelines was carried out from 2003-2023. Population-based studies comparing the incidence of BC after hormonal fertility treatment and a control group were included. In addition, random and fixed effect models were used to carry out meta-analyses. Results: A total of 15 studies involving 92,555 women were included in this review. The pooled analysis using risk …