Digital Commons Network^™

Land-Atmosphere Interactions Over Cities : Urban Effects On Tree Canopy Temperature And Local Cloud Patterns, Thuy Trang Vo

Dissertations

Understanding land-atmosphere (L-A) interactions is critical for predicting Earth’s system and its functionality. This dissertation advances knowledge in three aspects involving L-A interactions at different scales. The first study asks how city-wide tree canopy temperatures vary diurnally, and what environmental factors and to what extent they contribute to its spatiotemporal variation. Despite the importance of urban trees’ surface temperature in assess-ing micro-climate interactions between trees and the surrounding environment, their diurnal evolution has been largely understudied at a city-wide scale. The research highlights the more important role of the greenspace coverage in controlling the daytime canopy temperature, while, surrounding buildings …

A Fully Automated Global Post-Hoc Method Based On Abstract Argumentation For Explainable Artificial Intelligence And Its Application On Fully Connected Dense Deep Neural Networks, Giulia Vilone

Dissertations

Explainable Artificial Intelligence (XAI) has rapidly grown in the past decade due to the prevalence of machine learning, especially deep learning, in fields like healthcare and finance. While these models excel in accuracy, their complexity hampers transparency and interpretability. Ensuring understandable explanations for AI predictions fosters trust, prevents errors, complies with regulations, and enhances model refinement. The research project outlined in this thesis unfolds in phases. It commences with a comprehensive review of existing XAI studies, contributing to the field’s knowledge by proposing a taxonomy that organises theories and notions related to explainability, the evaluation approaches for XAI methods, and …

Maternal Involvement, Parenting Styles And Socioeconomic Status As Predictors Of Academic Achievement Of Standard 5 Students In Trinidad And Tobago, Edison Greenaway

Dissertations

The Problem

Underachievement remains a long-standing issue for the Ministry of Education in Trinidad and Tobago. This has been exacerbated by the COVID-19 pandemic, which deleteriously impacted the education system. School closures became mandatory, and online learning was implemented throughout the education system. The results of the 2022 sitting of the Secondary Entrance Assessment (SEA) exams emphasized the issue of underachievement, with a significant decline in performance. Only 37.06% of students scored above the 50% mark. Familial factors such as parenting styles and parental involvement have been noted in the literature to positively impact students’ academic achievement (Borup et al., …

Rocketship Education: An Exploratory Public Policy Case Study, Vladimir Gresham Ivanovic

Dissertations

This dissertation is an exploratory case study of the finances of the Rocketship charter school chain, especially those related to real estate. Rocketship is a not-for-profit charter management organization, one of the first in Santa Clara County, California. This study seeks to determine if the financial transactions related to Rocketship charter schools yield profits for investors, despite Rocketship itself being a non-profit entity, and if they do, how and where do they do so. In order to characterize fairly and completely the profits of Rocketship Education itself and Rocketship-related entities, this study uses publicly available documents to track money flowing …

In Their Words: Voices Of High School Graduates Who Were Labeled English Learners, Yolanda K. Jimenez

Dissertations

This research captures the experiences of high school graduates who were labeled English Learners while they were enrolled in a public high school in the greater Sacramento area of California. The study examined what these bilingual high school graduates report as beneficial and detrimental experiences faced while completing the course requirements for high school graduation. This study builds on research that includes secondary classroom teachers and their perceptions of English Learners, classroom teaching and learning, and experiences of emergent bilingual students. The study expands the body of research and informs praxis pertaining to supporting emergent bilingual students as they attempt …

"Who The Hell Am I? What Am I Bringing In Here?": A Phenomenographic Exploration Of Antiracist Mentor Development, Kelly Lynn Mack

Dissertations

Teacher attitudes toward racial diversity profoundly impact students, especially when compounded by teacher and student demographic disparities. Despite the purported goal of addressing biases and deficit thinking that limit teachers' ability to support all learners, antiracist pedagogy in teacher credentialing is poorly understood. Also included in the credentialing process, newly qualified teachers (NQTs) in California engage in a two-year induction program, collaborating closely with an induction mentor to attain their clear credential. Employing a qualitative, phenomenographic approach, this study explored how mentors within a longstanding induction program understood and implemented antiracist pedagogy. The research uncovered significant insights into (a) dimensions …

Addressing Equity Gaps In Stem: A Self-Study, Prabhjeet Kaur Brar

Dissertations

The Hispanic/Latinx population is increasing nationwide and in the state of California; however, the Hispanic/Latinx population remains underrepresented in STEM professions contributing to a lack of diversity in STEM. To increase the academic success of the Hispanic/Latinx student population in STEM majors, high leverage research-based teaching strategies through the lens of historically responsive literacy were applied and examined throughout this research. The purpose of this mixed-methods self-study was to examine the impact of research-based effective strategies/high leverage practices on Latinx students’ success rates in my introductory biology classrooms. The study focused on two biology course sections with a laboratory. Each …

How Can We Do Better? Understanding Student Experiences And Support Needs During And After The Covid-19 Pandemic, Kevina M. Brown

Dissertations

This dissertation study aimed to provide opportunities for students at San José State University (SJSU), to share about their experiences during the Covid-19 pandemic and to provide feedback and recommendations regarding resources and culturally engaging supports on campus. The research inquiry involved survey and interview methodology to gain insights into student experiences pertaining to financial and mental health challenges and academic disruption and social isolation during the beginning, middle and end of the pandemic, as well as their engagement with resources and supports provided on campus. Recruitment was done by flyer distribution throughout campus and via email distribution to students …

Queer A.F.: Queer Educators In Affinity Family Personal-Professional Development, James Egisto Aguirre

Dissertations

Scholarship shows that affinity groups are spaces of support, learning, and healthy career development that are responsive to the needs of a particular marginalized community. The concept of heteroprofessionalism– the implicit or explicit pressure/s queer educators feel to fit within the proverbial cisgender/heterosexual (cishet) box–is but one of a myriad issues and pressures affect queer educators across the nation. This study brings queer educators from one school district together to unpack their experiences through the lens of heteroprofessionalism. Via queer theory, qualitative, written response data was collected and subsequently analyzed in three, half-day sessions offered in spring 2024. Thirty participants …

Doing The Dishes: A Comprehensive Analysis Of The Late Bronze Age Ceramics Excavated From Hut 12 At Mokarta, Sicily, Justin Lee Singleton

Dissertations

Problem

This dissertation is presented as a fulfillment of the work that Sebastiano Tusa, the site director of Mokarta, had requested before his passing, that is, a complete catalogue of all Hut 12 ceramics, their functions, and how these may have fit into the site as a whole. The site itself, Mokarta, is a Late Bronze Age site in western Sicily that was destroyed by fire ca. 950 B.C. The site has not yet been fully excavated, and only a fraction of information that has been gathered has been published. The research for this dissertation is the first comprehensive analysis …

Spiritual Experiences Of Young People With Cognitive Impairments Within Christian Communities Of Faith, Lea Danihelova

Dissertations

This study was initiated with the primary objective of delving deep into the spiritual experiences of individuals living with cognitive impairments. The research was centered on seven young adults with cognitive impairment who were members of the Christian communities of faith and resided in Bratislava, the capital of Slovakia. The study focused on giving voice to these young people since there were no studies about the spirituality of people with cognitive impairment done in central Europe. The hermeneutic phenomenological approach was chosen as the research method due to its capacity for facilitating personal interactions, thus enabling a comprehensive understanding of …

Embracing Mindfulness-Based Professional Development In Early Childhood Education, Drew Giles

Dissertations

There is a growing need for school districts to identify additional strategies to support the work-related stress and emotional labor ingrained in an early educator’s career. By orienting early childhood education (ECE) staff to mindfulness practices, education leaders may identify new approaches to assist early childhood educators’ well-being, building healthy work atmospheres, and activities to shift the culture in early childhood settings. This study employs a qualitative exploratory research design, specifically video documentary methodology to better understand how early childhood educators experience a mindfulness-based professional development (MBPD) program designed for ECE staff, explore what they say education leaders should know …

(Miss)Educated Latino Males: Academic Preparedness, Navigation, And Retention At 2-Year Colleges, Nannette Stephanie Regua

Dissertations

This study centers Latino males, first generation, first year students at four 2-year colleges in the Silicon Valley by understanding their experiences in transferable English 1A Writing Composition course and looking at the acts of instilling a sense of belonging and mattering by institutional agents and support services that are invaluable to student retention and success. The purpose of this study is to determine Latino male students’ perceptions of academic preparation, navigation, and success in higher education after the implementation of California Assembly Bill 705. My findings revealed important themes that map onto conceptual frameworks, most notably the Community Cultural …

Evil, Ontology, And Scripture: A Diachronic Analysis Of Augustine Of Hippo's Privatio Boni Concept, Jamie G. Boucher

Dissertations

Augustine of Hippo’s Privatio Boni concept—the idea that evil is not a substance, but the privation of good in a substance—is the most influential early systematic theodical attempt within Christianity to exculpate a good God from responsibility for evil. By approaching Privatio Boni as the intricate interplay of Augustine’s views on evil, ontology, and Scripture, this dissertation aims to clarify misunderstandings surrounding the concept and determine if there is biblical warrant for it. Chapter 1 addresses issues of background, problem, purpose, and justification before introducing a delimited three-staged methodology of establishing context, engaging in diachronic analysis, and conducting a comparative …

Low Energy Availability, Disordered Eating, Exercise Dependence, Injury Prevalence, And Fueling Habits In Female Crossfit® Participants, Alyssum Reno-Smith

Dissertations

Disordered eating (DE) is primarily observed in endurance athletes and sports with aesthetics emphases. The prevalence of DE in resistance trained individuals, particularly CrossFit^®, is not well understood. CrossFit® promotes a culture encouraging strong, athletic, or muscular bodies, and both CrossFit® and endurance athletes aim to achieve a low body fat percentage to improve performance. This may lead to body dissatisfaction, exercise dependence (EXD), and/or DE behaviors, which may contribute to Relative Energy Deficiency in Sport (REDs). This cross-sectional study investigated DE prevalence and relationship with EXD risk, body dissatisfaction, and fueling habits in female CrossFit® only (CO) …

The Lived Experiences Of School Counselors And Ell Teachers Who Support Ell Students Who Exhibit A Symptom Of Mental Illness, Trenise Duckens

Dissertations

The current literature regarding the lived experiences of ELL teachers and school counselors who support ELL students who may exhibit a symptom of mental illness in high school is very limited. Research is available discussing school counselors and their role when supporting students who may exhibit a symptom of mental illness or may have mental health concerns. This study sought to add to the literature by exploring the lived experiences of ELL teachers and school counselors who support ELL students who may exhibit a symptom of mental illness. By adding to the literature, the researcher hopes to provide a better …

“A Real Man . . .”: Deconstructing Machismo Heteronormative Standards With K–12 Latino Male Educators Through Dialogic Spaces, Mario Echeverria

Dissertations

In a K–12 educational landscape where 75% of educators are white women, recruitment of Latino male educators is crucial for diversification, yet these educators represent just 2% of the teaching workforce in the United States (NCES, 2020). These educators grapple with a layered sense of identity as they navigate expectations of hegemonic masculinity and machismo norms that dictate their roles as disciplinarians and saviors, especially for young boys of color (Brockenbrough, 2018; Lara & Fránquiz, 2015; Martino & Kehler, 2006; Mills et al., 2004; Singh, 2021). Unfortunately, Latino male educators leave the profession at twice the rate of their Latina …

Examining Systemic And Dispositional Factors Impacting Historically Disenfranchised Schools Across North Carolina, Raketa Ouedraogo-Thomas

Dissertations

This mixed method sequential explanatory study provided analysis of North Carolina (NC) school leaders’ dispositions in eliminating opportunity gaps, outlined in NC’s strategic plan. The study’s quantitative phase used descriptive and correlation analysis of eight Likert subscales around four tenets of transformative leadership (Shields, 2011) and aspects of critical race theory (Bell, 1992; Ladson-Billings, 1998; Ladson-Billings & Tate, 2006) to understand systemic inequities and leadership attitudes.

The qualitative phase comprised three analyses of education leadership dispositions and systemic factors in NC schools. The first analysis of State Board of Education meeting minutes from 2018–2023 quantified and analyzed utterances of racism …

The Impact Of Hybrid Working On Employee Way Of Life And The Need To Reshape The Employee Value Proposition, Kanishka Chandanamali Athalage

Dissertations

This dissertation details a post-pandemic qualitative investigation conducted to understand the impact of hybrid working solutions on reshaping the employee value proposition (EVP) in the health insurance industry of the UAE. The research aims to evaluate how the introduction of modern hybrid working solutions impacts employees in a post-pandemic environment and, in turn, whether this creates a demand for human resources to refocus drivers of the EVP. Traditionally, EVP is referred to as the overall give-and-get in an employment deal; however, the pandemic was an eye-opener for organizations to redefine what it entails. Since hybrid working has become the new …

Depressurization Characteristics Of Steam-Based Reciprocating Vacuum Pump, Hongling Deng

Dissertations

This dissertation introduces a novel vacuum technology that leverages low-pressure saturated steam and cooling-controlled condensation, offering an efficient way to utilize low-grade thermal energy sources like waste heat, steam, or solar energy. At the heart of this technology is a unique duo-chamber vacuum pump system, featuring a reciprocating piston and a heat-conductive wall, designed to generate a vacuum through steam-condensation and cooling processes.

The core of this research lies in developing and validating mechanistic models for the steam-condensation depressurization process, a complex phenomenon involving phase change and transport mechanisms. Prior to this work, these mechanisms were not sufficiently modeled or …

The Role Of Semaphorins In Response To Injury In C. Elegans Neurons, Maria Belen Harreguy Alfonso

Dissertations

When neural tissue is injured by trauma, delicate neuronal processes such as axons and dendrites are prone to lesion damage and often disconnect. The molecular, cellular, and circuit mechanisms that underlie the regrowth and reconnection of these processes and the recovery of behavior are major challenges in the fields of neuroscience, regeneration, and resilience. At the molecular and cellular levels, signaling pathways that mediate neuronal growth cone guidance during development can play a role in neuronal regeneration and recovery from injury. One family of signaling proteins involved in this process comprises the highly conserved semaphorins and their receptors, the plexins. …

5g New Radio Access And Core Network Slicing For Next-Generation Network Services And Management, Abdullah Ridwan Hossain

Dissertations

In recent years, fifth-generation New Radio (5G NR) has attracted much attention owing to its potential in enhancing mobile access networks and enabling better support for heterogeneous services and applications. Network slicing has garnered substantial focus as it promises to offer a higher degree of isolation between subscribers with diverse quality-of-service requirements. Integrating 5G NR technologies, specifically the mmWave waveform and numerology schemes, with network slicing can unlock unparalleled performance so crucial to meeting the demands of high throughput and sub-millisecond latency constraints.

While conceding that optimizing next-generation access network performance is extremely important, it needs to be acknowledged that …

Model-Based Deep Autoencoders For Clustering Single-Cell Rna Sequencing Data With Side Information, Xiang Lin

Dissertations

Clustering analysis has been conducted extensively in single-cell RNA sequencing (scRNA-seq) studies. scRNA-seq can profile tens of thousands of genes' activities within a single cell. Thousands or tens of thousands of cells can be captured simultaneously in a typical scRNA-seq experiment. Biologists would like to cluster these cells for exploring and elucidating cell types or subtypes. Numerous methods have been designed for clustering scRNA-seq data. Yet, single-cell technologies develop so fast in the past few years that those existing methods do not catch up with these rapid changes and fail to fully fulfil their potential. For instance, besides profiling transcription …

Novel Photobase Generators For Photoinduced Polymerization And Ph Regulation, Shupei Yu

Dissertations

Photochemistry encompasses the investigation of chemical processes instigated by light absorption. As important branches of photochemistry, photosensitive and optical materials have attracted extensive research interests in both academia and industry. Photosensitive and optical materials are composed of polymers / small molecules with photo-responsive properties. These materials not only can absorb light in the desired energy spectrum, but also exhibit chemical / physical reactions, which can be applied to different fields such as photoredox, photo-heat, phototherapy, solar cells, diodes, etc. Among them, photobase generators (PBGs) are a series of photosensitive compounds, which absorb the incident light, then release the basic species …

Assessing The Feasibility And Mechanism Of Destructive Removal Of Per- And Polyfluoroalkyl Substances (Pfas) From Water, Kaushik Vinaykumar Londhe

Dissertations

One of the most pertinent challenges faced by the drinking water community is the widespread contamination of per- and polyfluoroalkyl substances (PFAS). These anthropogenic chemicals have been ubiquitously used in everyday products such as carpets, stain repellents, dyes, shampoos, non-stick cookware as well as in aqueous firefighting foams. PFAS are linked with adverse health effects in humans such as thyroid disease, obesity, immunological and reproductive disorders and linked to cancer in adults and low birth weight and developmental defects in infants.

Conventional water treatment technologies have proven to be largely ineffective in PFAS remediation, due to their extreme stability and …

Distributed Intelligence: Exploring Federated Paradigms Across Computing And Networking On The Edge, Yang Deng

Dissertations

Computer Graphics (CG) revolves around virtual content creation using computational methods, spanning applications from games to visual effects. Typically, the creation of CG content is led by expert practitioners who guide computational algorithms towards satisfactory results. Thus, creating CG content often requires manual iterations encompassing algorithm design, parameter tuning, and aesthetic feedback. This work investigates how to leverage crowd-sourcing to streamline such creation processes, focusing on animation and simulation. In animation, a novel crowd-sourcing framework is proposed for combat animation, enabling users to analyze motion similarities, and retrieve matching motions using novel crowd-sourced motion features. Such features enable quantifying previously …

Development Of Novel Protein Digestion And Quantitation Methods For Mass Spectrometic Analysis, Yongling Ai

Dissertations

Proteins are the workhorses of biology, playing multifaceted roles in maintaining cellular function, signaling, and response to environmental cues. Understanding their abundance and dynamics is pivotal for unraveling the complexities of biological processes, which underpins the foundations of molecular and cellular biology. Accurate measurement of protein quantities provides insights into cellular homeostasis, facilitates the discovery of biomarkers, and sheds light on the molecular mechanisms of diseases, bridging the gap between the molecular intricacies of proteins and their functional consequences in health and disease. The evolution of protein quantitation methodologies, from classical colorimetric assays to sophisticated mass spectrometry-based approaches, has expanded …

Homeless Barriers: A Phenomenological Study Of Service Providers In Thurston County, Washington State, Michael Meredith

Dissertations

Purpose: This qualitative phenomenological study aims to describe the perceptions of homeless service providers in Thurston County, Washington State, and describe barriers to the homeless seeking assistance. This study interviewed ten Thurston County service providers about their perception of the barriers preventing the unsheltered homeless from using available services. Identifying barriers and developing strategies to reduce or remove them is expected to reduce or eliminate homelessness.

Methodology: This qualitative phenomenological study describes the homeless service providers' perceptions of the homeless and the barriers to the homeless seeking assistance. The researcher conducted interviews with a sample of ten service providers to …

Value And Impact Of Nurse Innovators Working In Academic, Industry, And Government Settings: A Qualitative Study, Olivia A. Lemberger

Dissertations

This dissertation explores the value and impact of nurse innovators working in academic, industry, and government settings. A qualitative descriptive study was chosen to understand the contributions of nurse innovators and the outcomes associated with their innovative endeavors. The purpose of this study is to better understand the contributions of nurse innovators by answering the following research questions: 1) How do nurses perceive that nursing innovation adds value to and/or impacts patients or the United States health care system? 2) What metrics/outcome measures do nurse innovators identify as relevant or useful to evaluate innovation success? And 3) What methods/resources do …

Supports And Barriers Of The Lived Experience Of Hmong Women K-12 Administrators Seeking Advancement In Leadership Positions, May Moua

Dissertations

Purpose: The purpose of this qualitative phenomenological study was to examine the supports of cultural, family, community, professional career, and mentorship Hmong women administrators experienced in their career path toward a high-ranking educational administrative position. Additionally, the purpose of this study was to examine the cultural, family, community, professional career, and mentorship barriers Hmong women administrators experienced as they ascended to high-ranking educational administrative positions.

Methodology: This study was conducted using qualitative research methods. The researcher utilized a group of highly educated Hmong female administrators in the Central Valley, California area. This group of individuals shared their experiences of supports …