Digital Commons Network^™

Optimization Strategies To Enhance Performance In Matrix/Tensor Factorization And Multi-Source Data Integration, Mengyuan Zhang

All Dissertations

Optimization in the realm of machine learning constitutes a fundamental process aimed at refining the parameters of models to enhance their performance. It serves as the backbone of various machine learning techniques, encompassing diverse algorithms and methodologies tailored to address specific tasks and objectives.

In machine learning, datasets are commonly structured as matrices or tensors, making techniques like matrix factorization and tensor factorization indispensable for extracting meaningful representations from intricate data. Furthermore, datasets commonly comprise multiple sets of features, which has inspired our exploration of effective strategies for leveraging information from diverse sources during optimization. Additionally, the interconnected nature of …

Materials Data Science Ontology (Mds-Onto): Unifying Domain Knowledge In Materials And Applied Data Science, Van D. Tran, Jonathan E. Gordon, Alexander Harding Bradley, Balashanmuga Priyan Rajamohan, Quynh D. Tran, Gabriel Ponón, Yinghui Wu, Laura S. Bruckman, Erika I. Barcelos, Roger H. French

Student Scholarship

Ontologies have gained popularity in the scientific community as a means of standardizing concepts and terminology used in metadata across different institutions to facilitate data comprehension, sharing, and reuse. Despite the existence of frameworks and guidelines for building ontologies, the processes and standards used to develop ontologies still differ significantly, particularly in Materials Science. Our goal with the MDS-Onto Framework is to provide a unified and automated system for ontology development in the Materials and Data Sciences. This framework offers recommendations on where to publish ontologies online, how to best integrate them within the semantic web, and which formats to …

Nurturing Stability: Exploring The Relationship Between Child Welfare Workers’ Well-Being And The Impact It Has On Retention, Maritza Acosta-Gay

Education Doctoral

Child welfare workers are critical in ensuring the safety and well-being of vulnerable children and families. However, the demanding and emotionally taxing nature of their work has led to high turnover rates, impacting workforce stability and service quality. This study explored the complex relationship between child welfare workers’ well-being and job retention, seeking to uncover factors influencing their decision to remain in or leave the profession.

This qualitative phenomenological study employed one-to-one semi-structured interviews and thematic data analysis to gain an in-depth understanding of the firsthand experiences and insights of child welfare workers regarding their professional challenges and motivations. Participants …

A Few Good Techies: A Qualitative Exploration Of Black Computer Science Graduate Perceptions Of Persistence From A Community Cultural Wealth Perspective, Marissa Mcdaniel-Francis

Education Doctoral

In a rapidly digitizing economy, only 6% of computer scientists in the United States are identified as Black. This phenomenological research study focused on the personal attributes, academic experiences, and non-academic (support) experiences that Black computer science graduates perceive as contributing to their persistence in computing careers. Data were collected, transcribed, coded, and analyzed from semi-structured interviews of 11 Black computer science graduates. Community cultural wealth theory, critical race theory, and social capital theory framed this study's findings. The findings revealed that Black computer science graduates hold a strong science, technology, engineering, and math (STEM) identity and a positive social …

A Descriptive Qualitative Study Exploring Parent Involvement With Intervention Supports Provided To Children Receiving Early Childhood Special Education Services, Courtney A. Johnson

Education Doctoral

Parent involvement in a child’s education is proven to have positive effects on children’s academic careers (Eccles, 2005; Hara & Burke, 1998; Hill & Craft, 2003), with parent involvement in early childhood education programs playing an essential role in the life-long success rate and education of children (Jacobson, 2004). However, although New York City’s students are not meeting expected benchmarks, parent involvement in educational design and child development has not been leveraged to support student achievement. Epstein (1985) breaks parent involvement in a child’s life into six categories: (a) parenting, (b) communicating, (c) volunteering, (d) learning at home, (e) decision-making, …

Acculturation, Well-Being And Identity Of Oromo Immigrants, Hawi M. Wako

Dissertations

The purpose of this study was to examine the relationship between racial and ethnic identity, acculturative stress, and well-being for first generation Oromo immigrants. Studies regarding immigration, acculturative stress, identity, and well-being have primarily centered on Hispanics, Asians, and Caribbean individuals, but there has been a lack of attention toward Black African immigrants, including Oromo immigrants. The lack of inquiry into Black African immigrants, especially Oromo immigrants, creates a perception that all immigrants are the same, leading to a generic approach toward immigrant interventions and falls short of meeting the unique mental health needs of specific African communities.

Immigrants must …

Enzyme-Enhanced Ecf Bleaching: Improving Pulp Bleachability And Reducing Its Environmental Footprint, Bingyao Zhou

Dissertations

Enzymes have emerged as effective biocatalysts and environmentally friendly agents in pulp bleaching processes. Despite their potential, the fundamental chemistry underlying enzyme action on pulp fibers during bleaching remains poorly understood, limiting their widespread industrial application. This dissertation aims to investigate how enzymes interact with the chemical components of pulp fibers and their impact on elemental chlorine-free (ECF) bleaching in terms of pulp brightness, chemical consumption, and AOX generation.

Enzymatic pretreatment prior to ECF bleaching sequences was conducted on hardwood and softwood kraft pulp. Xylanase pretreatment significantly reduced chlorine dioxide consumption and enhanced pulp brightness in hardwood kraft pulp. Optimal …

How Local Interactions Give Rise To Large-Scale Conformational Changes In Proteins: A Molecular Dynamics Study, Shadi A. Badiee

Graduate Theses and Dissertations

Proteins are dynamic entities that undergo conformational changes essential for their biological functions. These structural changes often correspond with chemical events such as lipid interactions or environmental changes like protonation or acidification. Understanding the complex relationship between these chemical perturbations and the resultant mechanical responses is crucial for elucidating protein mechanisms. This dissertation investigates the chemo-mechanical coupling in the conformational dynamics of the bacterial ABC transporter Sav1866 and the impact of protonation on the Influenza virus hemagglutinin HA0. Using molecular dynamics simulations, we explore the conformational landscapes of Sav1866 and HA0. Our study examines how varying lipid compositions affect the …

Analyzing The Accuracy And Trading Strategy Potential Of Private Analyst Projections Of Usda Wasde Reports, Emmie Noyes

Graduate Theses and Dissertations

This thesis investigates the economic impact of private analyst forecasts on trading strategies in agricultural commodities markets. The primary objective is to assess whether private forecasts of world ending stocks contained in the USDA’s WASDE report provide valuable information for forming profitable trading strategies. The study utilizes panel regression models to analyze the relationship between private forecast accuracy and strategic returns derived from trading strategies based on these forecasts. The research employs unbalanced panel data spanning from January 2011 to April 2021, integrating monthly and yearly indicators to capture temporal patterns. The dataset includes observations from multiple firms, allowing for …

To Each Their Own: The Relationship Among Regret, Habits, And Academic Performance In College Students, Chandler Ann Findley

Graduate Theses and Dissertations

The extant literature on regret as motivation for behavior presents inconclusive results, collectively. While it has often been agreed that regret motivates reparative action, most studies from the past 14 years indicate that regret may motivate either detrimental actions or, more commonly, no action at all. There also appears to be no published research about college students’ academic regrets or how these regrets affect their classroom behaviors and performance. Therefore, this dissertation seeks to understand if college students regret their academic habits, what those habits are, and how their regrets and habits contribute to their academic performance over the course …

Examining Ethnic-Racial Socialization As A Predictor Of Resilience And Ethnic-Racial Stress In Hispanic/Latine Young Adults, Adrian Josue Hernandez

Dissertations

Multiple scholars have emphasized the importance of elucidating how Hispanic/Latine individuals are socialized to navigate issues pertaining to ethnic-racial identity, such as ethnicracial stress from racism and discrimination (Ayón et al., 2020; Umaña-Taylor & Rivas-Drake, 2021). Ethnic-racial stress has been linked to numerous adverse physical and mental health outcomes among Hispanic/Latine people, including poor health-related quality of life and increased depressive symptoms (Alamilla et al., 2010; Andrade et al., 2021).

Attention to the role of ethnic-racial stress in exacerbating health disparities within Hispanic/Latine communities has also stimulated increased interest in understanding Hispanic/Latine resilience (Arce et al., 2020; Bosma et al., …

Counselor Education Doctoral Student Supervisors’ Preparedness To Address Indirect Trauma: Compassion Fatigue, Secondary Traumatic Stress, And Vicarious Trauma, Dynetta Clark

Dissertations

Hearing the painful stories of clients (indirect trauma) has been described as an occupational hazard for professionals working with trauma survivors and is becoming more common among mental health professionals. This might include counselors struggling with intrusive thoughts and having flashbacks of victimization, counselors viewing the world as an unsafe and unpredictable place, and/or counselors experiencing a loss of ability to empathize with clients. Clinical supervision is documented as an effective strategy to reduce the adverse effects of indirect trauma symptomology. A signature component of most counselor education and supervision doctoral programs is the training and preparation of students to …

Black Women’S Instagram Usage And Body Dissatisfaction, Shirlee Buchanan Moore Jr.

Dissertations

Within U.S. culture, girls and women of all ages are subject to experiencing body dissatisfaction. This dissatisfaction often results from direct comparison of one’s body to others, often via media depictions. Viewing these images prompts women of all cultures to engage in social comparison and learn to view themselves through an observer’s perspective. The advent of contemporary social media has increased the accessibility of images of others and, subsequently, social comparison of one’s body to others. Research has noted that women of all racial backgrounds utilize social media and experience varying degrees of satisfaction and dissatisfaction with their bodies. Despite …

Relationship Enhancement With New College Dating Couples: An Examination Of Self-Report And Observational Data, Kyra Katte

Dissertations

The present dissertation project investigated relationship enhancement following a brief self-disclosure task (i.e., the Fast Friends Procedure; FFP) via self-report and observational data. Thirty-three undergraduate couples dating for less than six months asked and answered questions that required increasingly higher levels of self-disclosure for 45 minutes. Interactions were recorded and coded for fondness/admiration, experiential avoidance, interdependence, reciprocity, and relationship satisfaction. Relationship outcomes were assessed pre-FFP, post- FFP, and at a six-month follow-up timepoint. Variables measured via observation demonstrated correlations with and predicted relationship outcomes, though most findings were nonsignificant. Nonsignificant findings may be attributed to the virtual administration of the …

A Comparison Of Training Approaches On Skill Acquisition Among Direct Care Staff At An Adult Day Program, Sandra Wagner

Dissertations

Adults with intellectual and developmental disabilities (IDD) are often dependent on direct care staff to engage in daily activities, such as personal care, eating, and engaging in leisure activities. One way direct care staff can support adults with IDD to become more independent is by using prompting strategies. Often times, however, direct care staff have not been trained on how to use prompts to encourage independence. Current studies have demonstrated success in teaching direct care staff prompting strategies in personal care tasks (e.g., Engelman et al., 2002; Parsons et al., 1993) through behavioral skills training. Although the trainings produced an …

2024 August 1; Faculty Senate Minutes, State University Of New York At Cortland

Minutes

Faculty Senate Minutes, 2024 August 1

SUNY Cortland Teacher Education Program  Case Study of Program Completers

Promoting Cultural Humility, Belonging, And Inclusion To Improve Well-Being Among Direct Care Staff In Oregon Assisted Living, Residential Care, And Memory Care Communities, 2024, Jacklyn Kohon, Dani Himes, Laura Rodriguez, Sarah Dys, Paula Carder, Diana Jacoby, Madeline Fox

Institute on Aging Publications

The voices and experiences of those working and living in assisted living, residential care, and memory care (AL/RC) settings in Oregon are highlighted in this study to understand cultural humility, belonging, inclusion, and intersectional experiences related to sustaining the workforce and promoting quality care. This qualitative study collected data through individual and focus group interviews with a total of 68 people, including 25 direct care staff, voice memos or interviews with 9 former direct care staff, interviews with 9 administrators, interviews with 7 management representatives (owner/operators, human resources specialists, directors of operations, among other titles), and interviews with 18 current …

Himmelfarb Library Liaison Letter - August 2024, The George Washington University, Himmelfarb Health Sciences Library

Himmelfarb Library Liaison Letters

No abstract provided.

The Effects Of An Acute Dose Of Cannabidiol On Health And Two-Mile Time Trial Performance, Elyssa Bell

Master's Theses

As more studies exploring the therapeutic effects of cannabidiol (CBD) in both clinical and non-clinical populations continue to increase, there is a renewed interest in the ability of CBD to affect performance. In fact, many anecdotal reports in the media and online suggest that CBD may improve performance. Unfortunately, very few studies support these claims and research in the area is limited. Purpose: The purpose of this study is to explore the effects of an acute dose of CBD on anxiety symptoms, GI distress, heart rate variability (HRV), heart rate (HR), blood pressure (BP), blood lactate (BL) rate of perceived …

Contrast As A Governing Principle: Topic Deployment In Selected Sonatas Of Johann Christian Bach, Morgan Hall

Master's Theses

Between the end of the Baroque era and the end of the Classical era, there was a shift in the way music was composed. This shift allowed composers to employ multiple topics in one work as opposed to the single-affect-per-movement that was standard under the Doctrine of Affections. Despite plenty of scholarship about both of the eras, the transition from one to the other has been relatively unexplored. Early musicologist Charles Burney noted in a volume of his General History of Music that there was a composer who was the first to employ “contrast as a governing principle”, and this …

Determining Spatiotemporal Regulation Of Actin Dynamics In Choroid Fissure Closure, Cristal Gonzalez

Master's Theses

There are several stages of development necessary for proper vision. During vertebrate eye development, early eye morphology progresses in three stages: optic cup morphogenesis, basement membrane breakdown, and tissue fusion. Eye development is an intricate collaboration between many cells and requires tissues to migrate and bridge together. The following research investigates the Danio Rerio eye development to understand the molecular regulation of choroid fissure closure (CFC). It is hypothesized that CFC requires temporal and spatial regulation of actin dynamics. We investigate this question using chemical inhibitors, cytochalasin D, an actin treadmilling inhibitor, and NSC23766, a Rac-GEF inhibitor of the actin …

Fabrication And Characterization Of Lignin–Pva Hydrogels With Tunable Network Structures, Keturah Bethel

All Dissertations

The ability to directly tune the crosslinked network structure of hydrogels is crucial for their functional applications in various fields, such as water filtration, protein separation, and tissue engineering. By controlling the crosslink density of the hydrogel, one can directly alter the mesh size – i.e., the end-to-end distance between crosslink junctions – and, subsequently, directly alter the hydrogel performance. This work discusses the fabrication and characterization of soft composites containing the biopolymer, lignin, are discussed. Precisely, physically-crosslinked composite lignin–Poly(vinyl alcohol) (PVA) hydrogels were fabricated via the freeze-thaw (F/T) pathway, whereby solutions containing specified amounts of PVA and lignin were …

Understanding The Variability Of Circulation And Water Quality At Experimental Oyster Leases In The Mississippi Sound Using A High-Resolution Nested Modeling Approach, Shihab Hossain Saran

Master's Theses

Four 50-acre experimental oyster leases; two near Saint Louis Bay (StLB) and two near Pascagoula Bay (PB) were recommended to provide science-based guidance for oyster reef restoration efforts in response to continued limited productivity of oysters in the Mississippi Sound (MSS). Two-way nested simulations using ROMS within COAWST modeling framework have been run with improved forcings to analyze circulation, salinity and temperature variability within and around the lease areas under the extreme freshwater inflow from Bonnet Carré Spillway (BCS) openings and local rivers in 2019. High-resolution atmospheric forcing data is crucial because diurnal sea-land breeze affects salinity variability by increasing …

Exploring Overbank Sediment Deposition Variation In Heavily Modified Floodplains Of The Lower Mississippi River: A Sedimentological And Geophysical Analysis, Seth Fradella

Master's Theses

Since the 1930s, the Lower Mississippi River (LMR) has experienced large-scale modifications to the channel profile and surrounding floodplains through dams, dikes, revetments, dredging, and channel cutoffs. Although these changes have improved navigation and reduced flood risk, unanticipated changes to the major flood return period, individual flood severity and duration, and sediment regime have become increasingly apparent and sometimes problematic, such as the 2011 and 2018-2020 floods. Flood control levees along the LMR have reduced the natural floodplain area by 70-90%, resulting in heavily restricted overbank storage capacity of water and sediment. For the same flood events in recent history, …

Promoting Preschool Teachers’ Maintenance And Generalization Of Behavior-Specific Praise Through Multitiered Consultation, Claudia Abril Ochoa

Master's Theses

Teachers struggle to provide behavior-specific praise (BSP), which is associated with appropriate classroom management and decreases in student’s problem behavior. The current study used a multiple-baseline design across three Head Start teachers to test the effectiveness of the multitiered consultation model in increasing teachers’ BSP. The Head Start center provided a universal training in classroom management strategies, including BSP. Three teachers who were not implementing this strategy consistently (i.e., less than five instances in a 10-min observation) received Tier 2 supports including goal setting paired with a simple prompt. Data about teachers’ use of BSP was collected class-wide at a …

Promoting Greater Granularity In Climate Research: A Case Study Analyzing Perceptions Of Anthropogenic Climate Change Among Students, Faculty, And Staff At The University Of Southern Mississippi, Kelly Wegmann

Master's Theses

Anthropogenic climate change is a global concern that has the possibility to become the next world-altering event. While there is a substantial amount of scientific evidence proving its existence and harmful repercussions, there is still a lack of belief in its occurrence within the United States. This research uses survey data obtained from the University of Southern Mississippi to provide an understanding at a local scale of how both physical and psychological aspects bridge a gap in perception research.

With the use of previous research done by the Yale Program on Climate Change Communication (YPCCC) and George Mason University Center …

Remembering, Forgetting, And Artifact Deposition In Late Prehistoric Florida, Andrew Bowen

Master's Theses

Material culture plays a fundamental role in memory processes. Artifacts are an important means of both connecting with and cutting ties with a real or imagined past. They can be reminders or symbols of connection to other people, places, things, powers, or memories, making them key components within networks and relations. The way materials are deposited or destroyed often follows specific customs or responds to environmental factors. Specific situations, like interactions with outside groups or socio-political changes, prompt particular depositional events. During the Mississippi period, such circumstances were prevalent throughout the Southeast. By treating artifacts in specific ways during deposition, …

Investigation Of The Microbiome Of A Recirculating Aquaculture System (Ras) For Crassostrea Virginica Larvae, Isabelle Townsend

Master's Theses

Recirculating Aquaculture Systems (RAS) offer control over physicochemical and biological factors impacting aquaculture success. One understudied facet of RASs is the water microbiome. Oyster larval microbiomes are shaped by their aquatic microbiomes. Understanding the dynamics of and the factors shaping RAS microbiome may provide insights to how the microbiome can be a tool for optimizing larval production. This study’s goals were to investigate the microbiome stability of a RAS rearing oyster larvae across time and space, determine impacts of larval presence on the microbiome, and examine connections between larvae production outcomes and microbiome stability. Water samples were collected weekly from …

A Model Of Information Visualization Interpretation, Michael Gene Hilgers

Business and Information Technology Faculty Research & Creative Works

Since the groundbreaking work by Cleveland and McGill in 1984, studies have revealed the difficulties humans have extracting quantitative data from visualizations as simple as bar graphs. As a first step toward understanding this situation, this paper proposes a mathematical model of the interpretation effort of a bar graph using concepts drawn from eye tracking. First, three key areas of interest (AOIs) are identified, and fixations are modeled as random point clouds within the AOIs. Stochastic geometry is introduced via random triangles connecting fixations within the adjacent key visual regions. The so-called landmark methodology provides the basis for the probabilistic …

Sex-Dependent Differences In Vulnerability To Early Risk Factors For Posttraumatic Stress Disorder: Results From The Aurora Study, Stephanie Haering, Antonia V. Seligowski, Sarah D. Linnstaedt, Vasiliki Michopoulos, Stacey L. House, Francesca L. Beaudoin, Xinming An, Thomas C. Neylan, Robert A. Swor

Articles

No abstract provided.