Digital Commons Network^™

The Design, Synthesis, And Characterization Of Copper-Based Metal-Organic Frameworks For Their Investigation Against Cancer And Their Effect As Anti-Microbial Agents, Sandy Elmehrath

Dissertations

A wide range of nanomaterials have been developed for biomedical applications, such as drug delivery, biomedical imaging, and sensors. Nanomaterials can include nanoparticles (NPs) and nanofibers with various dimensions that are both natural and synthetic. A successful nanomaterial, for use in biological applications, is characterized by its biocompatibility, biodegradability, intrinsic high surfaces area, high interconnected porosity, and functionality. These features were achieved with the development of metal-organic framework (MOF) nanostructures. MOFs are assemblies of metal ions and organic linkers that are built into different geometries and can exist in all dimensions (up to 3-D). The choice of linkers with well-defined …

Prevalence Of Lost Time Injuries And Fatalities Among Construction Workers In Al Ain, United Arab Emirates (Uae), Ghuwaya Humaid Alnuaimi

Dissertations

Migrants account for more than 80% of the total population of the United Arab Emirates (UAE). Few population-based data were available about the burden of lost time injuries (LTIs) and fatalities among migrant workers employed in the construction industry. The proposed study aimed to estimate the prevalence of LTIs and associated factors, and fatalities among construction workers in Al Ain, of Abu Dhabi Emirate in the UAE. A cross-sectional study design was used to estimate the prevalence of LTIs resulting in one or more than a day of sick leave in a random sample (n=1,626) of male construction workers in …

Utility Of The Motivation To Change Lifestyle And Health Behaviors For Dementia Risk Reduction Scale (Mclhb-Drr) Based On A North American Sample, Angelina E. Witbeck

Dissertations

As the population ages, the prevalence rates of dementia continue to increase. Without a cure or promising treatment for dementia, the best course of lowering the prevalence rates of dementia is through preventative measures. Through an electronic survey, the study utilized the MCLHB-DRR scale to determine whether (1) gender, age, educational background, and socioeconomic status will impact the motivational factors to change lifestyle and health behaviors to reduce the risk of developing dementia and (2) direct experiences with individuals that have a dementia diagnosis are likely to impact one's motivational factors to change lifestyle and health behaviors to reduce the …

The Life Story Analysis Of Those Suffering From Autoimmune Thyroiditis, Azalea Di Nardi

Dissertations

The purpose of this study was to understand the pervasive impacts of autoimmune thyroiditis, specifically Hashimoto’s and Graves’ disease. To accomplish this, the life story methodology was utilized to gather individual experiences from 11 participants diagnosed with Hashimoto’s or Graves’ disease. The participants completed a background and general health questionnaire and 45- to-100-minute virtual interview disclosing their journey from the onset of symptoms, through diagnosis, to their most recent state. Themes were compiled from the interviews, which allowed identification of the largest areas of impact, needs, and future implications for practitioners and providers. Major themes identified were decreased quality of …

Categorizing Reentry And Reintegration Efforts Across Five States, Modena Stinnette

Dissertations

An average of 12,500 individuals are released from correctional control institutions in America each week. The reentry and reintegration of formerly incarcerated individuals into communities has become a relevant concern. This collateral damage caused by mass incarceration continues to challenge correctional institutions and community-based service providers to create better pathways for individuals returning home. Ending the collateral damage caused by mass incarceration will require a change in the way reentry and reintegration are defined, policies are created, recidivism is defined, and services are provided to individuals affected by mass incarceration. This research explores reentry and reintegration practices across five states. …

Factors Influencing Community Responses To Hoarding: Evaluating Operational Culture Of Hoarding Task Forces, Stigma, And Successful Outcomes, Leslie Gail

Dissertations

Hoarding is generally recognized as a pervasive need to acquire and retain items past the point of maintaining safe living spaces. Ushered into popular culture through television shows highlighting conflict, awareness of hoarding has increased. Experts report this condition affects 2-5% of the adult population, but this figure does not include children, family, neighbors, and community members (Buscher et al., 2013; Minor and Youth Children of Hoarding Parents, 2021). A unique feature of hoarding is the myriad of ways it is discovered.” People who hoard may keep conditions a secret due to a lack of awareness, concerns about forced remediation, …

They Don'y Expect You To Know Much: Black African International Students Encountering And Countering The Afropessimistic Attitude Within Academic Spaces, Margaret Sergon

Dissertations

Black African international students in the United States are vulnerable to increased microaggressions because of their minority statuses. In addition to being Black and speaking with non-native accents, African students must contend with Afropessimism which in this study refers to the Western world’s negative perception of Africa. The study is a mixed methods study that seeks to understand how the Afropessimistic attitude impacts the way Black African international students are perceived and interacted with, within the academic spaces. The findings indicate that African international students consistently encounter the Afropessimistic attitude, and it impacts their academic engagement. The findings also suggest …

Understanding The Voluntary Moderation Practices In Live Streaming Communities, Jie Cai

Dissertations

Harmful content, such as hate speech, online abuses, harassment, and cyberbullying, proliferates across various online communities. Live streaming as a novel online community provides ways for thousands of users (viewers) to entertain and engage with a broadcaster (streamer) in real-time in the chatroom. While the streamer has the camera on and the screen shared, tens of thousands of viewers are watching and messaging in real-time, resulting in concerns about harassment and cyberbullying. To regulate harmful content—toxic messages in the chatroom, streamers rely on a combination of automated tools and volunteer human moderators (mods) to block users or remove content, which …

Entrepreneurship And Heterogeneity Among Firms' Strategies: Three Essays, Xi Zhang

Dissertations

The first essay of this dissertation focuses on the entrepreneurship survival in the early stage, during which time an entrepreneur plays the game at the "edge of chaos" and improvises in real-time to learn the strategic playing field. It examines the social networks of entrepreneurs and the impact on new venture survival. Specifically, it explores how the entrepreneurs' social connections with other entrepreneurs and their types of employment differentially affect survival during the different stages of the entrepreneurial journey in the United States and India. Using the Global Entrepreneurship Monitor (GEM) dataset, this study documents not only how the social …

Effect Of Process Control Agents Used In Mechanochemical Synthesis On Properties Of The Prepared Composite Reactive Materials, Mehnaz Mursalat

Dissertations

The study explores synthesis and reactivity of new reactive materials prepared by ball milling. High-energy ball milling became a ubiquitous mechano-chemical tool to manufacture diverse powders, from pharmaceuticals or foods to alloys to new solid rocket propellants. It enabled a dramatic expansion of the range of chemical compositions obtainable; however, it did not so far, allowed one to fine-tune morphology or interfaces in the generated powders. It is shown in this work how different process control agents (PCAs) can serve to tune the powder morphology and reactivity. Commonly used as lubricants and cooling agents during milling, liquid PCAs can be …

Atmospheric Mercury Chemistry: Detection, Kinetics, And Mechanism, Na Mao

Dissertations

The presence of mercury in the environment is of global concern due to its toxicity. The atmosphere is an important transient reservoir for mercury released by human activities and natural sources. The knowledge of atmospheric mercury chemistry is critical for understanding the global biogeochemical cycle. In the atmosphere, mercury primarily exists in three forms: gaseous elemental mercury (GEM), gaseous oxidized mercury (GOM), and particulate-bound mercury (PBM). Over the last decade, the existing knowledge of mercury cycle has dramatically changed: (1) There has been increasing evidence that current detection methods do not accurately quantify gaseous oxidized mercury and a technique which …

Graph Enabled Cross-Domain Knowledge Transfer, Shibo Yao

Dissertations

The world has never been more connected, led by the information technology revolution in the past decades that has fundamentally changed the way people interact with each other using social networks. Consequently, enormous human activity data are collected from the business world and machine learning techniques are widely adopted to aid our decision processes. Despite of the success of machine learning in various application scenarios, there are still many questions that need to be well answered, such as optimizing machine learning outcomes when desired knowledge cannot be extracted from the available data. This naturally drives us to ponder if one …

Private Information Retrieval And Function Computation For Noncolluding Coded Databases, Sarah A. Obead

Dissertations

The rapid development of information and communication technologies has motivated many data-centric paradigms such as big data and cloud computing. The resulting paradigmatic shift to cloud/network-centric applications and the accessibility of information over public networking platforms has brought information privacy to the focal point of current research challenges. Motivated by the emerging privacy concerns, the problem of private information retrieval (PIR), a standard problem of information privacy that originated in theoretical computer science, has recently attracted much attention in the information theory and coding communities. The goal of PIR is to allow a user to download a message from a …

Unconscious Bias In United States Marine Corps Leadership Doctrine: Examining Microaggressions Through Document Analysis, Patrick Butler

Dissertations

This dissertation employed a document analysis format to examine Marine Corps leadership education doctrine for microaggressions. The United States Marine Corps (Marine Corps or USMC) is the military service with the least diverse officer cadre in terms of sex, gender identity, and race. The study results show a pattern of repeating unconscious bias-related content within the Marine Corps’ documents. Such patterns can negatively affect minority members in terms of their health, acceptance, and performance within the organization. The results also document an overriding bias-culture which puts Marine Corps leadership in a dilemma of trying to encourage conformity to traditional organizational …

Correlates Of Health Literacy And Perceptions Of Burden Among Caregivers Of Persons Diagnosed With Chronic Illnesses, Mubarak Aldawsare

Dissertations

Background/Rationale: Greater attention is needed on factors effectively supporting caregivers because poor well-being of caregivers can hamper overall patient outcomes. Lack of awareness of caregiver burden has implications for healthcare systems globally. Caregivers may encounter various levels of burden as a result of providing long-term care to individuals diagnosed with one or more chronic illnesses. Caregivers with inadequate health literacy are more likely to experience feelings of uncertainty, and as a result, caregiver burden. Little is known about the impact of the health literacy of caregivers on the level of burden when providing care to individuals with complex care …

A Bioactive Composite Scaffold Containing Zinc For Bone Tissue Engineering, Jennifer W. Moy

Dissertations

Non-union bone fractures occur during 5-10% of all bone fractures where the fracture is incapable of healing despite current surgical interventions with the use of bone grafts and graft substitutes. As an alternative, studies utilize growth factors and other biomolecules to differentiate mesenchymal stem cells into osteoblasts to aid in bone formation in vitro and in vivo studies. Zinc has known insulin-mimetic properties and are incorporated into multiple tissue engineering approaches to aid in osteogenesis, bone formation, and vascularization. In this work, mesenchymal stem cells (MSCs) were evaluated for the effect of zinc on osteogenesis. The supplementation of zinc in …

Constitutive Modeling And Numerical Simulations Related To Dual And Triple Shape Memory Polymers, Aayush Prasad

Dissertations

Shape memory polymers (SMPs) are a class of soft active materials that have the ability to retain one or multiple temporary shapes and exhibit deformation as a response to stimuli. The temporary shapes involved can be very complex, but SMPs can recover large amounts of strains compared to other smart materials. They have a wide range of applications, and their mechanism can be easily altered. Hence, there is an increasing need to model their behavior.

This study discusses the behavior of a thermally activated subclass of SMPs in which the temporary shape is fixed by a crystalline phase and the …

Integration Of Customer Preference To Smart Locker Location Planning For Last Mile Delivery Optimization, Colette Malyack

Dissertations

Understanding customer preference associated with delivery solutions, such as the use of smart lockers, is an area of increasing interest for package delivery companies. Applications of this data could result in cost savings through vehicle route decisions, cross-docking and fleet size optimization, and increased placement of smart locker technology for stop reduction. However, there has been little effort applied to gathering information related to public preference solutions to last mile package delivery. Therefore, preference data is gathered and analyzed related to smart lockers, and apply the results to delivery route and cross-docking optimization through package locker location planning within the …

An Exploratory Study On How Math Stories Engage Young Learners In Mathematical Sense-Making, Maria Gigi Carunungan

Dissertations

This is an exploratory study of how pedagogy in the form of math stories, shapes young learners’ perceptions, motivations, and sense-making of math concepts. The research is presented in an exploratory documentary, with audio-video data collected through the iPhone. The pilot test of story-driven math learning solutions was conducted by two teachers with eight first grade children from diverse backgrounds in an afterschool program. This study also includes interviews of the teachers, educational leaders and specialists in primary school curricula, children’s literature, and math education. The results of the pilot validated the efficacy of story-driven math learning solutions for mathematical …

The Role Of School Counselors In Advocating For Social Justice For All Students During The Covid-19 Pandemic, Amna Jaffer

Dissertations

The field of K–12 school counseling has evolved to embrace social–emotional and mental wellness aspects of students in addition to academic and career/college readiness. Social justice advocacy has been added to the role of school counselor by professional and educational entities. What is less clear is how well-versed school counselors are in social justice advocacy competencies, whether they are equipped to lead and advocate for social justice, barriers and accomplishments in doing so, and ways in which this role may be further developed and integrated into the field of school counseling, particularly in the context of the COVID-19 pandemic. As …

Factors That Contribute To Lower Enrollments Of Underrepresented Minority And Female Graduate Students In Computer Science And Engineering (Cse) At Bay Area California State University Campuses And Mitigating Factors From Student Perspectives, Noah G. Price

Dissertations

Over the last decade the Bay Area region has witnessed a lack of diversity in Silicon Valley technology professions, a subject of current political and popular discourse. The California State University (CSU) system provides accessible higher education; the CSU system approach to accessible higher education affirms the distinctness of regions, prepares graduates for professions in these distinct regions, and affirms the diversity in the state and the world. The CSU fall 2019 - 2021 enrollment dashboard data indicated there was a decrease in enrollment of underrepresented minority (URM) in graduate programs across three Bay Area campuses. Public fall 20119 - …

Student Engagement And Universal Design For Learning (Udl): A Community College Case Study, Candice R. Nance

Dissertations

Community colleges have a significant impact on education. The community college population includes some of the most vulnerable students who have the most to gain from educational attainment. The objective of this mixed-methods case study was to investigate the practical implications and impact of Universal Design for Learning (UDL) on student learning, engagement, and sense of belonging. Forty-nine students participated in this study from seven sections of an asynchronous introduction to business course at a California community college during the COVID-19 pandemic. Findings suggested that the UDL intervention increased students’ final grade percentages, exam scores, and group project scores while …

The Hustler Award Program, Julia N. Biayi

Dissertations

Problem: Hospitalized adults are at increased risk of falling due to multiple aspects, including but not limited to changes in health status, the environment, pain, weakness, confusion, and prolonged immobility. This project focused on the question: How will the utilization of the Hustler Award Program decrease fall rates in an adult inpatient medical-surgical unit?

Method: A prospective quality improvement pilot study focused on a 24-bed medical-surgical unit in a Midwest, 487-bed metropolitan-based facility.

Results: The results captured are for the evaluation period occurring from September through November 2021. The staff responded to 52-bed exit alarms, which yielded a response rate …

An Investigation On The Impact Of Intestinal Oxygen Availability On Survival And Regulation Of Virulence In Listeria Monocytogenes, Damayanti Chakravarty

Dissertations

The deadly foodborne pathogen Listeria monocytogenes is a gram positive facultative anaerobic bacterium. It is the third leading cause of death from food-borne illnesses. Once ingested, it encounters various stressors in the gastrointestinal (GI) tract, including acidic pH, bile, and alterations in oxygen availability. Various studies have been done regarding the pathogen’s survival mechanism against acid and bile. Since the lower parts of the GI tract are anaerobic, it is imperative to investigate how physiologically relevant anaerobic conditions impact L. monocytogenes’s survival. Transcriptomic analysis of L. monocytogenes under conditions mimicking the GI tract was performed. A large number of genes …

Learning To Fly: The Impact Of Project-Based Learning On Development Of The 4cs In The Elementary Grades, Deborah Francois

Dissertations

Purpose: The purpose of this qualitative phenomenological study was to investigate the impact of project-based learning on K-5 students’ development of the 4Cs (Critical Thinking, Communication, Creativity, Collaboration) as perceived by elementary charter school teachers.

Methodology: A phenomenological design was selected to address the research questions for this study. Through purposeful sampling, 12 charter elementary teachers who met a pre-determined set of criteria (including the routine integration of project-based learning within their instructional programs) were selected to participate in virtual, semi-structured interviews. All teachers were employed by charter schools located in six counties within California. The interviews were conducted using …

Understanding Food Waste Behavior And Ways To Influence Positive Change And Waste Reduction, David Hubinger

Dissertations

Environmental problems such as pollution, climate change, and food waste can be influenced by social attitudes and human behavior. Solutions to address environmental problems involve a series of actions by society and individuals, which can prove difficult to implement because changes induced by pro-environmental behavior often cannot be seen immediately by individuals or may not generate appreciable, direct benefits. The purposes of the quantitative correlational study are threefold: first, examine environmental attitudes, subjective norms, perceived behavioral control, and overall behavioral intent to reduce household consumer food waste among a sample of consumers; second, to examine the extent to which select …

Black Beyond Measure: An Antideficit Exploration Of Cultural Capital Within A National Society Of Black Engineers (Nsbe) Chapter At A Predominantly White Institution (Pwi), Rhonda Harley

Dissertations

Historically, Black students have been excluded from Predominately White institutions (PWI) longer than welcomed to attend and matriculate (Harper et al., 2009). Due to this lack of inclusion, African American students' educational experiences often center on academic disparities, inequality of opportunity, and under-preparedness in career planning within the American education system. While there has been a fair amount of research on the lack of representation of Black students in the engineering disciplines, the heavy focus on quantitative data offers little insight into the unique ways students succeed and overcome institutional and systemic barriers in pursuit of their degree. Undergraduate experiences, …

Improving The Retention Of United States (U.S.) Government Science, Technology, Engineering, And Mathematics (Stem) Employees, Jeffrey Myers

Dissertations

The U.S. government workforce has been consistently shrinking since a peak in the 1990s. At the same time, the need for technologically-savvy government workers has dramatically risen in this same period. This divergence in the demand for science, technology, engineering, and mathematics (STEM) employees challenges government leaders to retain these highly demanded workers in the public sector.

Decades of psychological research across many industries has investigated what motivates workers and how best to incentivize them to increase productivity. Maslow and Herzberg, among others, theorized that adult workers have both intrinsic and extrinsic needs that drive their behaviors and resultant productivity. …

Helmets Off: An Exploratory Investigation Into The Philanthropic Activity Of Black Nfl Players, Eugena Anderson

Dissertations

The term philanthropist typically conjures up images of older, wealthy White males. When taking account of a more diverse population, the term generosity provides a more inclusive framework to understanding the experiences of those marginalized from the study and practice of philanthropy. Using an interpretative phenomenological analysis (IPA) approach, this qualitative investigation explored one of several groups of individuals engaging in acts of generosity and brought the Black athlete experience into academic and philanthropic conversations. This research provided knowledge from real-life experiences of current and former Black NFL Players (BNPs) to inform various stakeholders who seek to support their activities. …

Gatekeeping Experiences Latina Superintendents Encountered As They Attained Their Superintendent Position, Julie Corona

Dissertations

Purpose: The purpose of this qualitative multicase study was to describe the career path progression and the gatekeeping experiences as Latinas advanced to a superintendent position. The second purpose of this study was to describe the gatekeeping experiences of Latina superintendents’ application and interview process of their superintendency. Additionally, this study described Latina superintendents’ gatekeeping experiences of gender and ethnicity. Last, this study examined the strategies that Latina superintendents used as they ascended to their superintendent positions. Methodology: This phenomenological multicase study was conducted through interviews of five Latina superintendents of California public schools. The researcher selected a qualitative method …