Digital Commons Network^™

The Tesla Brake Failure Protestor Scandal: A Case Study Of Situational Crisis Communication Theory On Chinese Media, Jiajun Liu

USF Tampa Graduate Theses and Dissertations

The aim of this thesis is to test how Tesla handles a protestor in Tesla’s booth in Shanghai. This thesis evaluated the effectiveness and acceptance of Tesla’s public relations and crisis communication through analyzing domestic Chinese official news articles and consumers’ attitude on China’s most used social media platform, Weibo. The electric vehicle industry is relatively a newer industry than traditional automobile manufacturing industries. Therefore, the immaturity of the industry could bring different types of crises, and traditional vehicle problems could also be the problems of electric vehicles, such as engine failure, brake failure, safety concerns and security threats, and …

Comparing Brood Care Behaviors Across Five Fertility Castes In The Invasive Fire Ant,Solenopsis Invicta,And The Expression Of Inotocin, Alexis Masnjak

USF Tampa Graduate Theses and Dissertations

The fire ant, Solenopsis invicta, is one of the most successful of the invasive eusocial invertebrates. The fire ant’s prolific reproductive capacity and its division of labor among five fertility castes are key factors to its successful invasion and global colonization across all continents except Antarctica. Although the rate of self-care and brood care by sterile S. invicta workers is well known, little is known about the rate of self-care and brood care by the other four fertility castes. In this study, I quantified the frequency and duration of behaviors by alate males, alate queens, newly mated queens, older mature …

“Even If You Have Food In Your House, It Will Not Taste Sweet”: Central African Refugees’ Experiences Of Cultural Food Insecurity And Other Overlapping Insecurities In Tampa, Florida, Shaye Soifoine

USF Tampa Graduate Theses and Dissertations

In the United States, resettled African refugee populations experience food insecurity at rates up to seven times higher than those of the general population. In Tampa, Florida, anthropologists have documented high levels of food insecurity among Central African refugee households since members of this population began to be resettled in the area in 2016. Utilizing an intersectional lens and drawing upon theoretical concepts such as cultural food security, navigational capital, and social reproduction, this thesis examines how Central African refugees, particularly women, experience food (in)security and other overlapping forms of (in)security as they integrate into US systems of structural inequality …

The Use Of Social Media By Leaders In Times Of Crisis: 2020–21 United States Election Protests, Cagdas Yuksel

USF Tampa Graduate Theses and Dissertations

This study investigated the Facebook posts made by presidential candidates Donald J. Trump and Joe Biden during the crisis that emerged after 2020 presidential election. The purpose of the study is to gain a better understanding of how crisis response is enacted via social media. This study's conceptual basis is the Social Crisis Communication Theory. The crisis, which is the focus of the study, was limited to the post-election process, which started with the allegations of Donald Trump alleged fraud in the election, after the 3 November 2020 US presidential elections, and especially to the process that resulted in the …

Improved Performance Of Silica-Supported La0.5Ba0.5Feo3 In The Reverse Water Gas Shift - Chemical Looping Process For Carbon Dioxide Reduction – A Density Functional Theory Study, Jiawei Guo

USF Tampa Graduate Theses and Dissertations

Global warming is increasingly obvious, and the reduction of greenhouse gases is an effective way to heal. Increasing the efficiency of catalysts that is applied in the industry can significantly reduce the emission of greenhouse gases. Reverse water gas shift chemical looping (RWGS-CL) is a promising reaction to convert CO2 to CO. La0.5Ba0.5FeO3 (LBF) is a good candidate for RWGS-CL, which shows increased conversion yield when supported on silica. This research focuses on identifying the mechanism of RWGS-CL via silica-supported LBF by exploring the oxygen vacancy formation energy (EO-vac). Density Functional Theory (DFT) is a powerful computational method to solve …

Using A Multicomponent Intervention To Increase Appropriate Transitions To School, Laura Catalina Dimas Agudelo

USF Tampa Graduate Theses and Dissertations

School attendance is important for the social and academic development of children. Therefore, appropriate transitions to school are a necessary skill for students. Differential reinforcement of other behaviors (DRO) is a non-intrusive procedure used to decrease undesired behaviors. Likewise, differential reinforcement of alternative behaviors (DRA) is a widely used procedure to increase appropriate alternative behaviors while reducing inappropriate behaviors. This procedure has been assessed throughout behavior analytic literature alongside other behavioral components. The use of DRA without extinction has been shown to be an effective procedure to increase appropriate behaviors and decrease disruptive behaviors without completely withholding reinforcement for behaviors …

Conquistas And Chronicles: A Social History Of The Fernando De Soto Expedition Of Conquest, 1538-1543, Morgan Norman Greig

USF Tampa Graduate Theses and Dissertations

Over the course of the last century, Fernando de Soto’s conquest of Florida has been a central topic of debate among scholars of the United States. In particular, the written sources generated by expedition members during and after their time in Florida have been used primarily by archaeologists and anthropologists for ethnohistoric data on Native American societies in the early-sixteenth century southeast. However, there are two central problems in the historiography that have plagued the field of Soto studies, both of which are the central focuses of this study. First, there has never been a full-length historical study conducted on …

A Theoretical Framework For Understanding Breast Cancer Survivor's Post-Treatment Lived Experiences In An Educational Program: A Qualitative Data Analysis, Katherine Jinghua Lin

USF Tampa Graduate Theses and Dissertations

Breast cancer (BC) is the most prevalent type of cancer among women and the most common cancer diagnosis for all the population in the United States. Early screening and treatment for BC have improved the prognosis for breast cancer survivors (BCSs) and increased survival rate. Current evidence showed insufficient data related to BCSs’ post-treatment symptoms, coping issues, and availability and impact of educational and support programs associated with breast cancer survivorship.

The overall purpose of this qualitative data analysis research project is to explore and identify BCSs’ perceptions (post-treatment) of physical, cognitive, and psychological symptoms experienced, as well as perceptions …

Degradation Performance Modeling And Optimal Maintenance Planning Of Deteriorating Critical Infrastructures, Hung Q. Nguyen

USF Tampa Graduate Theses and Dissertations

Serving as the backbone of the nation’s economy, a large and growing number of deteriorating critical infrastructures, such as transportation and water infrastructures, are underperforming, aging, becoming structurally deficient, and must be repaired or replaced. Due to the influence of a variety of factors (e.g., material structure, design, operation, and environmental conditions) at different phases of lifecycle and the costly data acquisition process, field degradation of deteriorating infrastructures is highly uncertain with limited degradation data. The co-location and spatial proximity between many infrastructures, such as road and water infrastructures, further makes them physically and operationally interdependent. The sheer deterioration of …

Nonparametric Estimation Of Transition Probabilities In Illness-Death Model Based On Ranked Set Sampling, Ying Ma

USF Tampa Graduate Theses and Dissertations

The ranked set sampling (RSS) design is applied widely in agriculture, environmental science, and medical research where the exact measurements of sampling units is costly, but sampling units can be ranked by a correlated concomitant variable. RSS is usually a cost-efficient alternate to simple random sampling (SRS) for selecting more representative samples. This study presents a novel methodology to investigate the nonparametric estimation of transition probabilities in illness-death model using the RSS design. We study the Aalen–Johansen estimator of transition probabilities in illness-death Markov model based on RSS design under random right censoring time and propose nonparametric estimators of the …

“Sometimes I Do This Thing”: Exploring Preservice Teachers’ Knowledge And Beliefs About Reading Instruction, Sherridon Leigh Sweeney

USF Tampa Graduate Theses and Dissertations

Prior research has established preservice literacy teachers’ beliefs about teaching and learning are often misguided and/or overly-simplistic, yet limited work has examined in what ways their in-the-moment teaching decisions align or misalign with what they believe. This qualitative study used deductive analysis methods to: (1) Identify three preservice teachers’ knowledge/beliefs about reading, reading instruction, and learning, as evidenced by their planning, reflecting, and in-the-moment teaching decisions, and (2) investigate if/how participants’ knowledge/beliefs manifested across multiple teaching experiences. Findings indicate that while participants made attempts to act on professional ideas they explored/practiced with the support of a university-based mentor, they taught …

Exploration Of Energy Efficient Computing For Data-Intensive Applications, Md Adnan Zaman

USF Tampa Graduate Theses and Dissertations

The recent surge of data-intensive applications has stretched the performance and energy limit of today’s traditional computing system. The massive amount of data generated by data-intensive applications is not processed at the same speed due to bandwidth mismatch between the faster processing unit and slower memory. Memory access and communication bandwidth can be identified as the primary bottlenecks. Consequently, these two bottlenecks make up most of the total energy consumption. In light of this, we explore energy-efficient computing for data-intensive applications. We examine different aspects of two computing systems, such as in-memory computing and AI-enabled edge computing, more popularly known …

Security And Privacy Enhancing Technologies In The Deep Learning Era, Gamage Dumindu Samaraweera

USF Tampa Graduate Theses and Dissertations

Our search queries, online purchase transactions, the videos we watch, and our movie preferences are a few types of information collected and stored daily. This private data collection happens within our mobile devices and computers, on the streets, and in our homes, most of the time even without our consent. Nevertheless, advances in artificial intelligence (AI) in the big data era have increased the capability to capitalize on and benefit from the collection of this private data. Such private data is being used for various machine learning (ML) applications in different domains, such as marketing, insurance, financial services, mobility, social …

Health And Friendships Of Lgbtqia+ College Students, Komal Asim Qidwai

USF Tampa Graduate Theses and Dissertations

Lesbian, Gay, Bisexual, Transgender, Queer, Intersex, Asexual and Others (LGBTQIA+) college students continue to face discrimination in seeking healthcare, having to navigate lack of access, heteronormative practices and protocols, and biased attitudes, even when accessing university health services. Moreover, LGBTQIA+ college students are unlikely to be able to rely on traditional sources of support such as family, and have a need to create a sense of home, by making friends. In this thesis, I explore friendships as an avenue through which these students seek health information and knowledge. I argue that health and friendship intersect in the lives of LGBTQIA+ …

Etiology Of Sterile Intra-Amniotic Inflammation: An Exploratory Study, Zoe M. Taylor

USF Tampa Graduate Theses and Dissertations

Preterm birth is the event of spontaneous birth prior to 37 weeks of gestation. In the United States, 1 in 10 babies are born prematurely. Low gestational age has been linked with increased morbidity and mortality. Preterm birth is multifactorial, where a myriad of contributors have been identified to include inflammation, chorioamnionitis, and inflammatory conditions to include hypertension and diabetes. To further explore the role inflammation plays in low gestational age, a literature review was done using PubMed. Two classes of inflammation quickly emerged: Pathogen born intra-amniotic inflammation and Sterile intra-amniotic inflammation. The latter form of inflammation has no identifiable …

The Effect Of Racial And Ethnic Identity Salience On Online Political Expression And Political Participation In The United States, Jonathon Smith

USF Tampa Graduate Theses and Dissertations

How close an individual identifies with their race or ethnicity can affect how individuals behave as political actors. Racial identity can affect how individuals express their political beliefs on social media sites or participate in political activities. However, does political expression on social media, particularly Facebook and Twitter, affect levels of political participation? The purpose of the project is to examine the relationship between racial and ethnic identity, online political expression, and political participation among the three largest racial and ethnic groups in the United States. Specifically, this project aims to answer whether online political expression mediates the relationship between …

Outcomes Of A Periodic Exposure Assessment Of Workers At A University Campus, Logan M. Armagast

USF Tampa Graduate Theses and Dissertations

Standards promulgated by the Occupational Safety and Health Administration (OSHA)are applicable to most businesses in the private sector, however, state and local government entities are not under OSHA’s jurisdiction. Universities that receive public funding fall under the category of state and local government entities and, unless an OSHA-approved State plan explicitly states otherwise, they are not required to demonstrate compliance with OSHA standards and are not subject to OSHA inspections. Without being constrained by federal regulation, those responsible for ensuring the health and safety of employees at publicly funded universities have some leeway in their methods for evaluating the conditions …

"Are We Done?": The Minimization Of Covid-19 And The Individualization Of Health In The United States, Cassidy R. Boe

USF Tampa Graduate Theses and Dissertations

As the death toll from Covid-19 in the United States exceeds 1 million in just over two years, more variants continue to emerge, threatening more waves of Covid-19 and ultimately, more deaths. Despite this, mask use continues to decline, and one third of Americans say that the pandemic is over. The Centers for Disease Control and Prevention (CDC) has been central in publicly disseminating biomedical knowledge using Twitter. The CDC’s Twitter account (@CDCgov) shares information related to the spread of Covid-19, including mitigation measures such as mask recommendations and vaccine information. I have conducted a narrative analysis of the replies …

Using Differential Reinforcement To Reduce Diurnal Bruxism, Stephanie Brown

USF Tampa Graduate Theses and Dissertations

The field of Applied Behavior Analysis is often used to intervene in dangerous or harmful behaviors to the benefit of service recipients. Many children engage in diurnal bruxism which can cause damage to their teeth, gums, and jaws. Tooth gnashing, which is a movement of the jaw that results in high impact between the lower and upper teeth, is a specific and damaging behavior which is included under the label of diurnal bruxism. This study examined the impact of using differential reinforcement of alternative behaviors to decrease the percentage of words spoken while gnashing teeth to reduce the long-term damage …

Ceramide-1-Phosphate: A Novel Regulator Of Golgi Fragmentation, Golgi-Er Vesicle Trafficking, And Anaplasma Phagocytophilum Pathogenesis, Anika Nayar Ali

USF Tampa Graduate Theses and Dissertations

Anaplasma phagocytophilum, the etiologic agent of human granulocytic anaplasmosis (HGA), is a tick transmitted obligate intracellular bacterium that infects granulocytes, bone marrow progenitor cells and endothelial cells. HGA exhibits symptoms of febrile illness including fever, chills, headache, malaise, leukopenia and elevated liver enzymes which are treatable by antibiotics. However, elderly and immunocompromised patients are at a greater risk of developing fatal complications. Inside the host cell A.phagocytophilum resides in host cell derived vacuole called A.phagocytophilum occupied vacuole (ApV) where it undergoes its biphasic lifecycle. Being an intracellular pathogen, A.phagocytophilum relies heavily on nutrient acquisition from host cell and to obtain …

Addressing Intersectional Stigma: Lgbtq+ Individuals Living With A Mental Illness, Jennifer T. Tran

USF Tampa Graduate Theses and Dissertations

The stigma process (i.e., stereotyping, prejudice, and discrimination) has profound and lasting effects on individuals within marginalized identities. Research has indicated that lesbian, gay, bisexual, trans*, queer, or questioning (LGBTQ+) individuals’ experiences of stigma have contributed to the development of mental illness. Therefore, LGBTQ+ individuals living with mental illness experience a unique and challenging type of stigma, intersectional stigma, due to identification within multiple marginalized communities. Populations most vulnerable to stigma include individuals who identify with more than one stigmatized identity, such as LGBTQ+ individuals living with mental illness. Therefore, there is a need to explore strategies to address intersectional …

Using Behavioral Skills Training With Self-Monitoring To Increase Conversation Skills In Adolescents With Autism Spectrum Disorder, Laura De Zayas

USF Tampa Graduate Theses and Dissertations

One of the major skill deficits found in individuals with autism spectrum disorder (ASD) is a lack of social skills. These socials skills range from having conversations, interpreting nonverbal behavior, understanding emotions, and understanding the perspective of others. Behavior skills training (BST) and self-monitoring have generally been shown to be effective in improving social skills for individuals with ASD. However, there is limited research that used BST with self-monitoring as an intervention package to improve social skills, particularly communication skills of adolescents with ASD in the school setting. Therefore, the purpose of this study was to extend the current literature …

Assessing Required Hospitality Competencies Among Students, Industry Professionals, And Faculty, Angad Singh Dang

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to identify the competencies important for success in the hospitality industry, based on the perceptions of hospitality faculty, professionals, and students. To identify the competencies, the research employed the following steps: initial survey development, input from a focus group panel of experts, review by validation panel of experts on revised survey, pilot study of process for final survey and data collection using the revised questionnaire. The study targeted hospitality students who were enrolled in a 4-year undergraduate degree program, faculty who taught in a 4-year hospitality under-graduate or graduate program, and hospitality professionals who …

High School Teachers’ Perceptions Of Promoting Student Motivation And Creativity Through Career Education, Kyeonghyeon Park

USF Tampa Graduate Theses and Dissertations

This study aimed to investigate teachers’ perceptions and experiences of career education as to how career education shapes students’ intrinsic motivation and creativity in a high school in South Korea. Career education in South Korea aims to help students discover their interests, skills, aptitudes, and passions, and to help them understand what they need to achieve their goals in the future through the opportunities of various experiences. Career education can help students increase their intrinsic motivation and creativity as well as discover future occupations through various types of activities. This study was informed by two theoretical frameworks, Self-determination theory and …

Microheater Stimulation Platform For Neural Cells, Haley Royce

USF Tampa Graduate Theses and Dissertations

Electrical stimulation is the basis of many biomedical devices like cochlear implants,pacemakers, and retinal implants. In these systems, current is applied to a desired tissue to effectively stimulate it. Unfortunately, this is not localized as the current will spread through the tissue, limiting the spatial resolution. Thus, alternative forms of stimulation are needed to improve device precision and resolution. This project explores microheaters as a stimulation platform that can be easily integrated with existing biomedical devices. Microheaters produce heat via the Joule heating effect wherein electrical current is run through high resistance materials to output thermal energy. They are highly …

Healthcare Profession Students Of Color Participating In International Service-Learning, Ellyn Katherine Couillard

USF Tampa Graduate Theses and Dissertations

This qualitative exploratory case study investigated the healthcare profession students’ of color experience and the perceived impact of completing international service-learning (ISL). Before this study, most of the research about healthcare profession students in ISL reported had mainly White participants or reported data and findings in the aggregate. To complete this research, I performed two semi-structured interviews with each of the five participants incorporating photo-elicitation techniques. Then I performed constant comparative methods and communicated with a peer debriefer about my findings. Five participants were selected using max maximum variation based on racial, ethnic, and cultural backgrounds, programs of study, and …

Do Auditors Respond To Changes In Clients’ Analyst Coverage? Evidence From A Natural Experiment, Mohammad Alkhamees

USF Tampa Graduate Theses and Dissertations

Prior research has established that analysts serve as an important monitor of managementand improve the quality of firms’ financial reporting. In this study, I utilize the natural experiment resulting from the mergers and closures of brokerage houses, to examine whether this exogenous change in firms’ information environment impacts the audit process. Specifically, I examine whether reductions in analyst coverage have an effect on auditor effort proxied by audit fees and audit report lag, as well as financial reporting quality, measured by future restatements. I find that client firms pay significantly higher audit fees following an exogenous reduction in analyst coverage …

Securing Critical Cyber Infrastructures And Functionalities Via Machine Learning Empowered Strategies, Tao Hou

USF Tampa Graduate Theses and Dissertations

Machine learning plays a vital role in understanding threats, vulnerabilities, and security policies. In this dissertation, two machine learning empowered approaches on improving the security of critical cyber infrastructures and functionalities will be discussed.

The first work focuses on preventing attacks that use adversarial, active end-to-end topology inference to obtain the topology information of a target network. The topology of a network is fundamental for building network infrastructure functionalities. In many scenarios, enterprise networks may have no desire to disclose their topology information. To this end, we propose a Proactive Topology Obfuscation (ProTO) system that adopts a detect-then-obfuscate framework: (i) …

Self-Perceptions Of Major Choice And Employability Skill Development In Sophomore Business Students, Melissa A. Kulp

USF Tampa Graduate Theses and Dissertations

Today’s college students expect that an outcome of a college education is to be prepared to secure a well-paying job within their field of study after graduation. Within career services offices, career preparation is typically focused on upperclassmen looking for internships and jobs, leaving sophomore students to make major and career decisions on their own. The purpose of the study is to understand what on-campus experiences sophomore business students had to aid them in their major and career path choices, how they define and interpret three employability skills, and which experiences helped them develop these three employability skills needed to …

Analysis Of Prescription Drug Brand Mentions In Music: Prevalence And Consumer Perceptions, Lisa A. Blake

USF Tampa Graduate Theses and Dissertations

Music is not only a lucrative mass reach media (Stassen, 2021) but also a deeply personal tool for self-expression (Hallam, 2019). Music listeners are exposed to a slew of branded messages within music promoting a variety of product types such as apparel, automotive, and alcohol (Craig, Flynn & Holody, 2017). Promotion in music has been proven to be an effective vehicle for building brand awareness when listeners are interested in the music (Delattre & Colovic, 2009, Hoyer & Brown, 1990; Macdonald & Sharp, 2000; Thoma & Williams, 2013). Brands promoted within music enjoy some of the benefits of promotional tactics …