Digital Commons Network^™

Meta-Analysis Of United States Seabird Populations Based On Ocean Biodiversity Information System (Obis) Records (1965–2018), Savannah Hartman

USF Tampa Graduate Theses and Dissertations

Understanding the distribution of organisms is an important priority for society as we live through ecosystem transformations that threaten the well-being of all organisms. I have approached the dynamic and complex issue of studying biodiversity by using open-access seabird data collected along the Americas since the 1960s. I explained how these data have changed over time and space, how certain species populations could have shifted over time, and possible correlations between this potential geographic change and select environmental variables.

In Chapter 2 I evaluated the suitability of the open-access data archive Ocean Biodiversity Information System (OBIS) for supporting detailed inquiry …

Evaluating The Accuracy Of Inertial Measurment Units In Detecting Gait Parameters For Lower Limb Prosthesis And Orthosis Users, Bryce Fuller

USF Tampa Graduate Theses and Dissertations

A Gait Extraction System (GES) was developed to investigate the accuracy of wearable sensors by producing gait parameters, to be compared against a gold standard motion capture system. Two inertial measurement units (IMUs) were placed in the lower limb region, specifically in the shank region of each leg. The GES uses algorithms to extract the gait cycle from raw acceleration data to produce gait parameters such as stride length, stride time, step length, step time, stance time, swing time and cadence. There were three main trials that consisted solely of a flat road, a road with small hills and a …

Multimodal Assessment Of Human Behavior With Applications In Analysis Of Autism Spectrum Disorder, Sk Rahatul Jannat

USF Tampa Graduate Theses and Dissertations

Human behavior analysis is an important application area of artificial intelligence. Usingdata collected from sensors (e.g., cameras), human behavior including, but not limited to, emotions, expressions, body movement, and eye gaze are analyzed. This analysis is useful in applications in diverse fields ranging from healthcare, defense, education, and marketing. Considering this, in this dissertation, we have proposed new approaches to emotion and expression recognition, subject identification, and classification of autism spectrum disorder. More specifically, this dissertation has the following contributions: 1) A new approach for multimodal ubiquitous emotion recognition is proposed; 2) Investigation into the impact of large expression variations …

Secure Lightweight Cryptographic Hardware Constructions For Deeply Embedded Systems, Jasmin Kaur

USF Tampa Graduate Theses and Dissertations

Lightweight cryptography plays a vital role in securing resource-constrained deeply-embedded systems such as implantable and wearable medical devices, smart fabrics, smart homes, radio frequency identification tags, sensor networks, and privacy-constrained usage models. The National Institute of Standards and Technology (NIST) initiated a standardization process for lightweight cryptography, a relatively-long multi-year effort, which eventually concluded in February 2023. Side-channel attacks (SCAs) exploit the vulnerabilities of a system by observing and analyzing side-channel information leakages. Fault analysis attacks are a type of active SCAs, where an intelligent adversary injects bit/byte faults into the implementation of a cryptographic cipher to recover the secret …

Case Study And Fidelity Assessment Development For The Family Intervention Specialist (Fis) Program, Areana Cruz

USF Tampa Graduate Theses and Dissertations

This dissertation involved an in-depth analysis of the Family Intervention Specialist (FIS) program and the development of an FIS fidelity assessment. Three studies were conducted for this analysis. Study one analyzed FIS administrative data from one Managing Entity to determine the extent that the quality assurance measures align with the core program policies and procedures established by the Department of Children and Families. Study two included a content analysis of FIS policies and procedures manuals for alignment regarding implementation practices and qualitative interviews with FIS stakeholders regarding FIS implementation, strengths, challenges, and adherence to established policies and procedures. Study three …

Supervision Needs At 2 And 5 Years Post Traumatic Brain Injury: A Veterans Affairs Tbi Model Systems Study, Deveney M. K. Ching

USF Tampa Graduate Theses and Dissertations

The present study assessed the supervision needs, with the Supervision Rating Scale [SRS] (Boake, 1996) of Veterans and Service Members enrolled in the Veterans' Affairs (VA) Traumatic Brain Injury Model System (TBIMS) at 2- and 5-year follow-ups after moderate to severe traumatic brain injury (TBI). A cross sectional analysis was conducted at 2-year follow-up (N=428) where it was found that 35% of subjects still needed supervision. At 5-year follow-up (N=295) it was found that 32% of subjects needed supervision. Finally, a multilevel model of supervision (N=164) found that the relationship of supervision needs remains a constant linear line over the …

Detection Of Subsidence In West-Central Florida Using Persistent Scatterer Interferometry And Near-Surface Geophysics, Tonian R. Robinson

USF Tampa Graduate Theses and Dissertations

This dissertation consists of three studies that employ Persistent Scatterer Interferometry (PSI, also known as PSInSAR) to better understand how subsidence in west-central Florida relates to underlying geological processes. In the first study, near-surface geophysical methods (Ground Penetrating Radar (GPR) and Electrical Resistivity (ERT)), terrestrial remote sensing applications (Light Detection and Ranging (LiDAR) and Structure from Motion (SfM)), and PSI were used to monitor the spatial and temporal behaviors of a suspected growing sinkhole in the Sandhill Boyscout Reservation, Hernando County, Florida. The survey area was located within and around a topographic low assumed to be the surface of the …

Enhancing The Safety And Reliability Of Closed-Loop Medical Control Systems, Shakil Mahmud

USF Tampa Graduate Theses and Dissertations

The Internet of Medical Things (IoMT) is a rapidly advancing field that relies heavily on semi- or closed-loop Wearable and Implantable Medical Devices (WIMDs). In recent years, there has been renewed interest in clinical automation, with researchers looking for innovative solutions for Physiological Closed-Loop Control Systems (PCLCS). However, these devices can have various security issues, including vulnerabilities in software and firmware, physical attacks, weak encryption/authentication, and compromised system components. Government agencies, including the US Food and Drug Administration (FDA) and European Medicines Agency (EMA), emphasize the importance of ensuring the safety and reliability of PCLCS since malfunctioning medical devices can …

A Novel Jazz Music Curriculum For Young Children: Results Of A Pilot Study, Jazmin D. Ghent

USF Tampa Graduate Theses and Dissertations

Jazz improvisation is known as the highest-known art form concerning improvisation due to its frequency and development of creative ideas (Feldman 1964). Research shows that the art of spontaneous creation can contribute to children’s ability to problem-solve, social and emotional well-being, and academic success into adulthood (Biasutti, 2017; Heble & Laver, 2016; Kiehn, 2003; Kuzmich, 1980; Solis, 2009). Improvisation is crucial for developmentally comprehensive music programs; however, improvisation is scarce in elementary music classrooms and curricula. For this pilot study, a group of 31 children aged 5-8 and considered at-risk participated in a study where they were randomly assigned to …

Zinc-Mediated Reductive Acylation And Silylation Of Various P-Quinone Derivatives, Katrinah I. Tirado

USF Tampa Graduate Theses and Dissertations

Quinones are compounds containing cyclohexadiene diones and can be found in a variety of biological systems. Quinones participate in redox cycling to initiate the formation of free radicals which contributed to their overall biological activity. When quinones are reduced by either biological or chemical reductants, they can become unstable and undergo autoxidation back to their quinoidal form. One way to avoid autoxidation is the use of protected hydroquinones. Many protected hydroquinones in literature have been shown to be efficient in drug delivery as probes or molecular containers or they can act like prodrugs to be released into active forms to …

The Relationships Between L1, Writing Quality, And Complexity, Accuracy, And Fluency In L2 Writing, Tuc C. Chau

USF Tampa Graduate Theses and Dissertations

The purpose of the current dissertation is to map the relationships between first language (L1), writing quality, and syntactic complexity, accuracy, lexical complexity, and fluency (CALF) in second language (L2) writing. CALF are characteristics of language production that have been of significant interest in L2 writing research for the past few decades. Though they have been extensively studied as dependent variables that may vary as a function of other factors, they have been rarely studied together, much less in relation to L1 as an independent variable. Thus, this study explored the effects of L1 and writing quality, operationalized as score …

A Culturally Responsive And Sustaining Pre-School: Collaborative Approaches To Curriculum In An Underserved Florida Community, Dana R. Roberts

USF Tampa Graduate Theses and Dissertations

The early childhood education and childcare (ECE&C) sector in America “is a textbook example of a broken market” (Yellen, 2021) that operates as a “non-system” (Berlin, 2021). This manifests itself through the low-quality of its teaching cadre (Cassidy et al., 2019). This failure hits disadvantage families hardest (Chafouleas et al., 2016) - a reality that is particularly apparent in St. Petersburg, Florida’s Midtown neighborhoods where one out of every two children attending ECE programs are not meeting State school readiness standards (Florida OEL, 2020). In this study, I propose a culturally-responsive (Gay, 2018), culturally sustaining (Ladson-Billings, 2021c), and equity-based continuous …

From Other And From World: Expanding The Current Model Of Existential Isolation, Roger Young Jr.

USF Tampa Graduate Theses and Dissertations

Extant research investigating the nature of existential isolation (EI) has focused primarily on the experience of the gap between one’s mind and the minds of others (self-other EI). The general purpose of the current research was to begin exploring the experience of the gap between one’s mind and the world (self-world EI). This purpose was carried out across three studies. A pilot study confirms that self-world EI is a relatively common experience that usually involves meaning violation or dissociation, and results in psychological discomfort and self-doubt. Study 1 found that self-world existential isolation produces more “EI affect” (e.g., nervous, afraid, …

Characterization And Implementation Of An All-In-One Heating, Impedance, And Pulsing Device For Molecular Delivery Applications, Alex Otten

USF Tampa Graduate Theses and Dissertations

Cancer impacts millions of Americans every year, with an estimated 1.9 million new cases and 600,000 deaths predicted to occur in 2023 [1]. Medical professionals and scientists have developed several techniques and procedures to combat this disease including gene therapies, surgeries, and chemotherapies. Several of these techniques incorporate the use of pulsed electric fields to deliver molecular material to treat, or directly destroy, the cells of the tumor. These pulsed electric field techniques are known as gene electrotransfer, electrochemotherapy, and irreversible electroporation. All three techniques utilize different electrical parameters to achieve their target tumor reduction or expression goals. Efforts to …

“So, I Am Back”: Adjudicated Youths’ School Reentry Experiences, Inita S. Knox

USF Tampa Graduate Theses and Dissertations

Adjudicated youth face a multitude of barriers when reentering school following incarceration. School administrators and educational personnel know very little about how these students perceive their reentry experiences and what the students identify as needed supports, resources, and barriers throughout the process. This qualitative study used in-depth, semi-structured interviews with photo-elicitation to explore and describe how formerly incarcerated youth perceive their high school reentry experiences. Participants were male adolescents ages 16 to 18 years old. who provided rich and in-depth descriptions of their reentry experiences. Recommendations for policy, practice and future research are provided.

Exploring Novel Two Dimensional Diluted Magnetic Semiconductors And Heterostructures For Spintronics Applications, Thi Hai Yen Pham

USF Tampa Graduate Theses and Dissertations

Atomically thin transition metal dichalcogenide (TMD) semiconductors hold enormous potential for modern optoelectronic devices, magnetic sensing, and quantum communications. Long-range ferromagnetism can be induced in TMD monolayers by introducing a small amount of magnetic dopants to form diluted magnetic semiconductors (DMSs), making them promising candidates for applications in ultralow-power and ultracompact spintronic nanodevices. This dissertation research aims to address two contemporary challenges in the fields of nano-magnetism and spintronics: controllability of magnetic dopants in TMD monolayers in the form of MX2 (M = W, Mo; X = S, Se) and understanding the fundamental physical mechanisms that give rise to magnetism …

Applications In Opioid Analysis With Faims Through Control Of Vapor Phase Solvent Modifiers, Nathan Grimes

USF Tampa Graduate Theses and Dissertations

Field Asymmetric Ion Mobility Spectrometry (FAIMS), often coupled with mass spectrometry (MS), offers rapid analytical ion filtration, useful in reducing matrix interference and differentiating isomeric compounds. This study focuses on augmenting FAIMS-MS analyses through the incorporation of gas phase solvents, or "modifiers," inducing dynamic microsolvation, a particularly potent method of analysis enhancement.

Initially, the research utilized a bubbler-based system, incorporating a humidity sensor, improving modifier concentration control when using water. Our application in opioid detection and differentiation revealed considerable advancements. Notably, an increased peak capacity in an opioid mixture and successful separation of the isobaric opioid pair, alfentanil and ortho-isopropyl …

Utilization Of Detonation Nanodiamonds: Nanocarrier For Gene Therapy In Non-Small Cell Lung Cancer, Allan E. Gutierrez

USF Tampa Graduate Theses and Dissertations

Lung cancer is one of the most prevalent and high mortality cancers in the world. Two different categories of lung cancer are non-small cell lung cancer which makes up 85% of cases, and small cell lung cancer which makes up the remaining 15% of cases. A significant risk factor that can lead to lung cancer is cigarette smoking (CS) however non-smoking cases i.e., secondhand CS, exposure to certain toxins and family history are on the rise. Both the main types of lung cancer have different system of stages, different ranges of treatment, and consequently low survival rates. Unfortunately, detection and …

Synthesis, Characterization, And Separation Of Loaded Liposomes For Drug Delivery, Sandra Khalife

USF Tampa Graduate Theses and Dissertations

Liposomes are viable candidates for drug delivery vehicles due to their ability to protect loaded compounds, dampen side effects of drugs, and be delivered to target sites in the body. The amphipathic nature of these lipid vesicles makes them very customizable through careful selection of bilayer and aqueous core components as well as synthetic and downsizing methods. However, synthetic methods may result in unencapsulated compounds remaining present alongside loaded liposomes, which require removal before the liposome suspension can be used.

This work explores the use of model DOPC as well as DOPC and CHOL liposomes and the methods that were …

Environmental Chemical Analysis Method Optimization And Application To Northwest Cuban Marine Sediment, Thea R. Bartlett

USF Tampa Graduate Theses and Dissertations

A method for gas chromatography tandem mass spectrometry (GC-MS/MS) in selected reaction monitoring (SRM) mode has been optimized to quantify 250 compounds of a variety of compound classes such as polycyclic aromatic hydrocarbons (PAHs), oxidized PAHs, organochlorinated pesticides, polychlorinated biphenyls, biomarkers (hopanes, steranes, tri-aromatic steroids, and fecal sterols), aliphatic hydrocarbons, and plastic additives. This method was validated based on available QA/QC standards using several environmental samples, both sediment and biota, and standard reference materials. This contaminant-focused method can be used as a forensic geochemistry tool to evaluate oil contamination and other contaminant histories in future research studies. When applied to …

Gold-Catalyzed Diyne-Ene Cyclization: Synthesis Of Hetero Polyaromatic Hydrocarbons And 1,2-Dihydropyridines, Jingwen Wei

USF Tampa Graduate Theses and Dissertations

Homogeneous gold catalysts are known as a powerful tool for selectively activating alkynes and are well-developed in the construction of C-C, C-N, and C-O bonds to form complex compounds that are widely used in pharmaceuticals, industries, agriculture, etc. The investigation of gold(I) catalysis on conjugated diyne (compounds having two acetylene groups) enriches the complexity of the bond construction and allows the building of interesting skeletons in organic synthesis. One typical kind of substrate, diyne-ene, has both a conjugated diyne part and a 1,6- enyne part. We developed a new methodology to allow its divergent synthesis to heterocycles.

This dissertation mainly …

Improving The Subjective Well-Being Of Autistic Youth Utilizing A Positive Psychology Intervention, Nicolette Bauermeister

USF Tampa Graduate Theses and Dissertations

This study utilized a single-case multiple-baseline design to analyze the effects of a ten-week multi-component positive psychology intervention, the Well-Being Promotion Program, on the subjective well-being of Autistic youth. This thesis addressed a gap in the literature regarding the effectiveness of positive psychology interventions when administered to Autistic middle schoolers. Three Autistic middle schoolers participated in this single-case design study. Dynamic decision-making was used to stagger intervention implementation across the three participants. Life satisfaction and positive/negative affect data were collected via a Qualtrics survey that was administered twice per week. Through visual analysis and Baseline Corrected Tau calculations, it was …

Metachronal Locomotion: Swimming, Scaling, And Schooling, Kuvvat Garayev

USF Tampa Graduate Theses and Dissertations

This dissertation deals with one type of underwater locomotion called metachronal swimming in which the organism sequentially beats its multiple appendages allowing phase lag between adjacent neighbors. Metachronally swimming species are widespread and include copepods, shrimp, ctenophores, and tomopterid worms to name few. First, using the high-speed recording and planar particle image velocimetry (PIV) measurement, I report on kinematics of fast metachronal swimmer and constructive vortex interactions among its appendages and discuss its implications for improved performance regarding the swimming. Second, I show how hydrodynamic performance of all metachronal swimmers (paramecia, copepods, tomopterid worms, krill etc.) can be scaled by …

Applications Of Seismic And Geodetic Data To Earthquake Hazard Research, Mahsa Afra

USF Tampa Graduate Theses and Dissertations

Being a part of a seismically active zone, including large and crowded cities such asTehran, Qazvin and Semnan, Central Alborz experiences many local earthquakes. Knowl- edge of crustal velocity structure in this area is thus necessary considering its economical and political importance, a large concentration of population, and relatively poor construc- tion practice which increases the earthquake risks in this region. In second chapter of this thesis, we aim at obtaining the 3D crustal velocity structure of the Central Alborz region in northern Iran using local earthquake tomography. We also validate anomalies inferred from our velocity model using an independent …

An Analysis Of State Sex Education Policies To Explore The Inclusiveness Of School Based Sex Education, Amarah Scott

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to analyze state policies related to sex education proposed between 2018 and 2022 to determine the extent to which sex education needs of LGBTQ youth were being addressed. Previous research has shown that, on average, both abstinence-only and comprehensive sex education curricula do not include information that is relevant to LGBTQ youth. Much of the information included in sex education curricula such as pregnancy prevention and the benefits and disadvantages of condoms are most relevant to youth who identify as heterosexual. Not receiving relevant and accurate sex education puts LGBTQ youth at risk for …

The Transformative Impact Of A Semester-Long Us-Based Gelt Course On Pre-/In-Service Teachers' Cognition And Classroom Practices, Özge Güney

USF Tampa Graduate Theses and Dissertations

As English has become a global lingua franca used by a greater number of nonnative speakers than native speakers, a focus on native speaker norms in English language teaching (ELT) has become obsolete. There has been a call to incorporate different varieties of Englishes (native, nonnative, and nativized) and related cultures in both teacher education programs and the English classroom- an approach known as Global Englishes Teacher Education (GELT). This study investigates the influence of a GELT-informed teacher education course offered at a US state university on the cognition and (future) practices of pre-/in-service teachers, which aspects of the GELT …

Reading Suffering Between The Lines: Trauma And Witnessing In Old And Middle English Literature, Anca Olguta Giorgiana Garcia

USF Tampa Graduate Theses and Dissertations

Both literary trauma theorists and medieval literature scholars generally avoid analyzing Old and Middle English literature through the lens of trauma studies. There are multiple reasons for this reluctance, and perhaps the most elementary one is the misconception that medieval society was numb to pain because they experienced it more often than people today do. Another reason is the fact that trauma in general is seen as a product of the Industrial Revolution and of the interactions between humans and machines. Its terminology and diagnostic methods have only developed in the last two centuries, so applying modern concepts on medieval …

Initial Understanding Of Public Stigma Against Childhood Cancer Survivors, Nele Loecher

USF Tampa Graduate Theses and Dissertations

As childhood cancer survival rates climb to new records, it is increasingly important to focus on improving the psychological wellbeing of survivors living years beyond their diagnosis. One potential contributor to psychological distress for childhood cancer survivors (CCSs) is stigma. The fear of stigma can lead to CCSs concealing their identity as a CCS, which in turn can strain workplace and intimate relationships, creating a strain on CCSs’ social and work life. Additionally, the internalization of negative stereotypes or rejection of falsely positive stereotypes around cancer can exacerbate psychological distress. To establish what stereotypes and stigma CCS might be contending …

The Rise Of Text Analysis: Using Machine Learning To Explain The Variation In Going Concern Accuracy, Yimei Zhang

USF Tampa Graduate Theses and Dissertations

Auditors are required to issue modified audit opinions if they have sufficient doubts about the client’s ability to continue as a going concern. These going concern opinions represent an important information resource for financial statement users to evaluate client performance, and are associated with a number of negative capital market outcomes (e.g. negative returns, increased cost of capital, etc.). Despite being used by capital market participants, going concern opinions are commonly plagued with Type I errors (false positive) and Type II errors (false negative), making them a particularly noisy measure. The purpose of this study is to determine whether machine …

A Simple Synthetic Example Of The Benefits Of Coincident Ground Penetrating Radar And Seismic Data Acquisition For Shallow Lunar Exploration, John Coonan

USF Tampa Graduate Theses and Dissertations

Both seismic and ground penetrating radar (GPR) methods have been used separately to image geophysical wave velocities and layering in the shallow lunar subsurface. However, uncertainties in the interpretation of both types of data persist. Collection of both types of data at a given site could reduce uncertainties in both the positions and nature of contacts. We illustrate the potential benefits of coincident data acquisition through a hypothetical case study of a lunar “lava tube” represented by a half-cylindrical vacuum-filled void within a solid rock medium. Propagation of both active-source seismic and muti-offset ground-penetrating radar waves is numerically modelled through …