Digital Commons Network^™

Cool Under Fire: Psychopathic Traits And Decision-Making In Law Enforcement-Oriented Populations, Sean J. Mckinley

USF Tampa Graduate Theses and Dissertations

Law enforcement is an occupation that is typically characterized by high stress, physical danger, and potential for use of excessive force to subdue suspects of criminal activity. Compared to other jobs, the law enforcement profession is considered a high-stakes occupation that has the potential to greatly impact public safety, and officers must face daily dangers not experienced in other professions. While much research has focused on traditional models of personality and police performance (i.e., Big Five traits; Schneider, 2002; Twersky-Glasner, 2005), there may be utility in examining police officer performance through the lens of the triarchic psychopathy domains (Patrick, Fowles, …

Testing The Congruence Of Espousals And Enactments Predicting Team Innovation, Rylan M. Charlton

USF Tampa Graduate Theses and Dissertations

This study employs a social identity perspective (Hogg, 2008) to test whether perceptions of both espoused and enacted values drive team innovation, and tests whether both their level and congruence determine their impact on innovation. This relationship is tested in a multilevel latent polynomial regression model (MLPM) framework (Zyphur, Zammuto, & Zhang, 2016). The study also leverages block variable procedures (e.g., Edwards & Cable, 2009) to model the combined effects of espoused and enacted values, and tests whether these combined effects mediate between leader behavior and team innovation. This represents the first test of Zohar and Hofmann’s (2012) proposition that …

Learning, Planning For, And Reflecting On Teaching Mathematics For Social Justice: A Case Study Investigation Of A High School Mathematics Methods Course, Queshonda J. Kudaisi

USF Tampa Graduate Theses and Dissertations

While much is known about learning to teach for social justice in other content areas, less is known about how mathematics education students learn to teach mathematics for social justice, specifically at the high school level. Hence, this mixed-methods convergent case study addresses this gap in the research literature by examining and describing the experiences of mathematics education students learning to teach mathematics for social justice within the context of a high school mathematics methods course at a large research university in the southeastern United States. The data sources accessed for this study include a survey measuring beliefs about teaching …

Online Perceptions Of Panamanian Prisons And Incarcerated Persons: An Analysis Of Youtube User Comments, Mahaleth J. Sotelo

USF Tampa Graduate Theses and Dissertations

The purpose of this study is to explore and understand the frameworks in which prisons and incarcerated persons are discussed amongst commenters under YouTube videos displaying media on Panamanian prisons. The study incorporates a mixed methods approach by conducting a general content analysis of YouTuber comments to address themes within the discussion. Additionally, these themes were quantified and modeled using predictive variables collected such as number of comment likes, number of comment dislikes, and number of comment replies, alias type (screen name or name-like), presence of profile picture, and profile picture type. The themes found were 1) punitive, 2) justifying …

Sanitation Marketing In Uganda: The Impact Of Gender On Participation And Outcomes, Elizabeth Vicario

USF Tampa Graduate Theses and Dissertations

Uganda aims to reach universal access to basic sanitation under Sustainable Development Goal #6, but achieving this target by 2030 would require doubling the annual rate of progress. Women are disproportionately affected by poor sanitation due to their health needs and risk of facing violence, but they have historically been excluded from sanitation planning. Low household demand and poor service delivery have stalled progress in Uganda. Market-based sanitation (MBS) is a novel method of developing a sanitation market through stimulating demand and supporting a competitive atmosphere for product and service providers. This research studies the sanitation marketing activities implemented by …

A Functional Characterization Of The Omega (Ω) Subunit Of Rna Polymerase In Staphylococcus Aureus, Shrushti B. Patil

USF Tampa Graduate Theses and Dissertations

In bacteria, RNA polymerase (RNAP) is a well-characterized and highly conserved multi-subunit enzyme complex responsible for transcription of DNA into RNA. The ω subunit (rpoZ/RpoZ), one of the smaller accessory subunits of RNAP, is often overlooked and under-studied, however, particularly in Gram-positive species. We have previously shown that deleting ω impacts the integrity of RNA polymerase in S. aureus, especially the β' subunit, and alters preference of the core enzyme for sigma factors, skewing heavily towards σB instead of the housekeeping σ factor. Consequently, this causes deregulation of myriad transcriptional processes, strongly rewiring gene expression circuits, and ultimately impairing the …

Three-Dimensional Intrusion Geometries In The Monogenetic San Rafael (Utah) Sub-Volcanic Field Revealed By Nonlinear Inversion Of Magnetic Anomaly Data, Troy A. Berkey

USF Tampa Graduate Theses and Dissertations

Distributed volcanic fields are common on Earth and nearby planetary bodies. Unlike their central-vent counterparts, these volcanic centers are comprised of many individual basaltic magmatic dikes, which are often only expressed at the surface in the form of vents, domes, and lava flows. In situ imaging of the shallow (<1 km) subsurface can reveal important details about the 3D geometry of fissure systems that feed distributed eruptive centers, with implications for the nature of these eruptions: their mass flow rates, explosivity, durations, and volcanotectonic interaction. Luckily, dikes, sills, conduits and related near-surface structures tend to carry high remnant magnetizations, creating magnetic anomalies at the surface where sufficient magnetic contrast exists with the host rocks they intrude. In the San Rafael Sub-volcanic field (SRSVF), basaltic dikes intrude fractured and horizontally bedded Jurassic sandstones, now eroded to a depth of about 800 m beneath the paleo-surface. Detailed mapping and profiles with a Cs-vapor magnetometer reveal far more complex anomalies than can be attributed to simple planar dikes, including: sills, buds, and domes. We image these geometries using MagCube-parallel, an open-source nonlinear inversion code we developed that models complex geometry with multiple (<= 1,000) vertical-sided prisms. I show one normally polarized fissure system to include along strike: An ~3-14 m thick, ~50 m wide dome-like feature or laccolith at depths of ~9-20 m, a roughly vertical conduit ~15 m thick, ~36-50 m wide, at ~1-16 m depth near the center of the mapped fissure-like system, and a ~8-48 m. wide dike at ~2-17 m depth that is <1-6 m thick, with reducing magnitude northward. While model depth and thickness vary with magnetization contrast, the main geometric relationships do not. Magnetic mapping of a nearby fissure reveals the same types of structures. The implication of these structures is that the small-volume fissure eruptions were likely pulsatory, with episodes of horizontal intrusion of sills, and sufficient time to develop gravitational instabilities.

The Use Of Video Games In Teaching Efl Students To Write Arguments, Dalal Boland

USF Tampa Graduate Theses and Dissertations

This study aims to investigate how playing an online digital video game, Quandary, during a university writing course affect the quality of argumentative writing produced by adult EFL students in Kuwait and how playing the same video game is different between male and female adult EFL students when learning how to write argumentative essays. The sample of the study consisted of 42 students who were enrolled in English composition 2 at Gulf University for Science and Technology, Kuwait. The students were divided to control and experimental group and were part of the study for 3 weeks. Students in the control …

Investigation Of An Alternative Protocol For The Production Of Sars-Cov-2 Antigenic Proteins, Nichole Ninaltowski

USF Tampa Graduate Theses and Dissertations

With the COVID-19 pandemic showing no signs of slowing down, large-scale antigenic protein production is still needed for surveillance using serologic assays. From screening to vaccines to biotherapeutics, being able to produce the proteins for these assays is essential; however, the current gold standard method for producing SARS-CoV-2 spike proteins is prohibitively expensive for most research groups.

Alternative methods of transfecting mammalian cells to produce recombinant proteins that are relatively inexpensive have been used for years. Unlike the expensive, commercially available lipid-based methods, other established methods such as polyethyleneimine (PEI), are considerably easier, and cheaper to meet the needs of …

Online And Adjusted Human Activities Recognition With Statistical Learning, Yanjia Zhang

USF Tampa Graduate Theses and Dissertations

Wearable human activity recognition (HAR) is a widely application system for our daily life. It hasbeen built in many devices, such as smartphone, smartwatch, activity tracker, and health monitor. Many researchers try to develop a system which requires less memory space and power, but has fast and accurate classification results. Moreover, the objective of adjusting the classifier by the system self is also a study direction. In the present study, we introduced the machine learning methods to both smartphone data and smartwatch data and an adjusted model with the continuous generating data. Further, we also proposed a new HAR system …

Development Of Small-Scale Power Supplies For Wearable Medical Diagnostic Devices, Donny Stiner

USF Tampa Graduate Theses and Dissertations

As devices continue the trend of becoming increasingly smaller in scale to allowfor wearability, the power supply modules driving these technologies will in turn become reduced in size as well. This progression will call for advanced techniques to fabricate power supplies on wearable device platforms which still permit the circuit to operate effectively. One such crucial technique, which is discussed in this thesis, is the implementation of power saving measures to increase battery lifespan on wearable devices.

Equipment found in the medical field today can be quite bulky and requireinconvenient means of transportation and take up an excessive amount of …

Trilateration-Based Localization In Known Environments With Object Detection, Valeria M. Salas Pacheco

USF Tampa Graduate Theses and Dissertations

Many strategies for localization have been proposed, the majority of which rely on distance calculations and estimates. The proposed approach is a method that combines image-based single-camera localization techniques and the principle of trilateration to perform localization in a known indoor environment. By using a camera, the proposed system can detect custom objects using object detection in an indoor environment and calculate an approximation of the camera’s position. To recognize the location, previous information such as the size of the environment and the coordinates and sizes of the objects in the environment are given as input to the system together …

The Media Reproduction Of Racial Violence: A Content Analysis Of News Coverage Following The Death Of George Floyd Jr., Keylon Lovett

USF Tampa Graduate Theses and Dissertations

The media has played a critical role in reproducing anti-Black violence in the United States, which has often harmed African American communities. Historically, the white press has depicted graphic imagery and descriptions of Black people being brutalized, with little ethical regard to their harmful effects. The Black press has historically challenged negative portrayals in the white media and shown more nuance, to protect the Black audience it represents. This dynamic underpins media depictions of racial violence still seen today. Darnella Frazier’s video capture of George Floyd’s death by Minneapolis police, was widely shared in the weeks following the incident, across …

Multi-Material Hybrid Additive And Subtractive Manufacturing Of Photonic Devices, Roger Brandon Tipton

USF Tampa Graduate Theses and Dissertations

Optoelectronics focuses on the application of electronic devices that utilize forms of electromagnetic radiation including visible light and other wavelengths including ultraviolet and infrared. Optoelectronics typically include devices that emit light and detect light. Devices created using this technology include light-emitting diodes, laser diodes, photoresistors, photodiodes, solar cells, phototransistors, and fiber optics. Fiber optic interconnects are interesting devices in that they are used in conjunction with optoelectronic devices to transmit information between individual optoelectronic components.

Optoelectronics are typically produced by traditional lithography methods including etching, writing, and printing on rigid silicon substrates for fabricating devices. Other techniques like glass or …

Design Of Acoustic Wave Sensor System For Detection Of Btex In Gas Phase, Veselinka Mitevska

USF Tampa Graduate Theses and Dissertations

Benzene, toluene, ethylbenzene, and xylene are classified as volatile organic compounds (VOC), which if present at higher concentrations can cause acute and/or chronic health effects. To protect people from VOCs, the occupational safety and health agency (OSHA) established short term and eight-hour workday exposure limits. The short time levels of exposure for BTEX materials are 5 ppm, 150 ppm, 125 ppm, and 150 ppm, for benzene, toluene, ethylbenzene, and xylene respectively. The eight-hour workday exposure for these same materials are 1 ppm for benzene, 200 ppm for toluene, 100 ppm for ethylbenzene and 100 ppm for xylene. Although there are …

The Importance Of Lithologic Variability And Stratigraphic Architecture In The Development Of Eogenetic Karst Systems, Nicholas J. Soto-Kerans

USF Tampa Graduate Theses and Dissertations

Integrative characterizations of karst systems on low-lying eogenetic carbonate platforms are rare and often limited to areas of direct observation where caves can be entered and explored. Because hydraulic properties of eogenetic limestones have been implicitly assumed to be homogeneous, classical models of carbonate island karst development stressed the importance of geochemical interfaces in controlling cave and vug development. These studies have explained the largest cavern systems as results of either 1) mixing dissolution at platform margins or 2) microbially-mediated dissolution processes at water tables.

New data from core descriptions and wireline logs obtained in 18 boreholes drilled in the …

Expansion-Contraction: Spatial And Temporal Variability In Connectivity In A Stream-Wetland Flow Network, Savannah Fransbergen

USF Tampa Graduate Theses and Dissertations

The seasonal expansion and contraction in a stream-wetland flow network is often difficult to characterize due to a lack of accurate mapping products, but proper characterization is important for the management of these resources. A new approach to mapping hydrography, resulting in a Regional Hydrography Dataset (RHD), may offer additional insights not provided by the national standard, the National Hydrography Dataset (NHD). The RHD can be customized to provide seasonal or monthly hydrograph, whereas the NHD is static. We conducted field validation (241 sites) and geospatial analyses to assess the accuracy of these products in the northern Tampa Bay Area. …

Criminalizing Lgbtq+ Jamaicans: Social, Legal, And Colonial Influences On Homophobic Policy, Zoe C. Knowles

USF Tampa Graduate Theses and Dissertations

Based on colonial and neocolonial models of oppression, Jamaica has adopted many laws, policies, and systems mandated by the British monarchy. Many of these laws contain anti-LGBTQ+ policies which remain in effect today. To address the criminalization of LGBTQ+ identities, I used queer theory and queer criminology to analyse the ways Jamaica constructs LGBTQ+ people as criminals and how they are treated in the legal and criminal justice systems from a postcolonial standpoint. Using a qualitative text-based feminist and queer policy analysis, I investigated social, legal, and colonial influences on current anti-LGBTQ+ policy by looking at the Offences Against the …

An Assessment Of Nutrient Improvement In Surface Water Due To The Conversion Of Onsite Sewage Treatment And Disposal Systems To Sewerage, Jenelle A. Mohammed

USF Tampa Graduate Theses and Dissertations

Florida represents approximately 12% of all onsite sewage treatment and disposal systems (OSTDS) in the United States. Properly designed, constructed and maintained OSTDS are effective eco- friendly alternatives for the treatment of domestic wastewater from households not serviced by public sewer systems. However, conventional OSTDS are not designed to effectively remove nitrogen. If installed and improperly used, they may contribute other pollutants. OSTDS have also been linked to degraded water quality in some regions. However, it has been difficult to quantify OSTDS impacts on water quality because of various confounding factors such as point and non-point sources of nutrient input. …

Multi-Object Localization In Robotic Hand, Tsing Tsow

USF Tampa Graduate Theses and Dissertations

We have developed a machine learning approach to localized objects inside a robotic hand using only images from 2D cameras. Specifically, we used deep learning method (You Only Look Once, YOLO) and Iterative closest Point (ICP) to estimate the 3D coordinates of the objects in a robotic hand. This method will also output the number of objects inside the robotic hand in addition to the coordinates of the objects. We have demonstrated the performance with simulation and obtained typical accuracy within a few pixels (couple mm) and counting accuracy of about 76%. We have also applied it to real images, …

Slow Slip Events And The Earthquake Cycle, Nicholas K. Voss

USF Tampa Graduate Theses and Dissertations

Slow Slip Events (SSEs) represent a new type of strain release along faults, which have onlybeen recognized as a global phenomena with the growth of precision space-borne geodetic techniques. These events represent an important part of the strain budget on faults, sometimes bounding the area of co-seismic release and perhaps limiting the amount of seismic energy release. SSEs have also been suggested to proceed large megathrust earthquakes including the great 2011 Tohoku and 2015 Iquique earthquakes. I document a series of SSE along the Nicoya Peninsula in Costa Rica. These events take place both before and after the 2012 M7.6 …

Residential Curbside Recycle Context Analysis, Ntchanang Mpafe

USF Tampa Graduate Theses and Dissertations

Curbside recycling as a preferred mode of residential and municipal sustainability goals seems to have an overwhelming acceptance and adoption in the US. About 69.8 million out of 97.3 million (72%) single-family households in the United States have access to curbside recycling services (State of Curbside Recycling Report, 2020). Collectively, the programs divert about nine million tons of recyclables from landfill disposal each year (Cottom, 2019).

For a design that started in the 1980s in the US, its rapid universal adoption seems to have precluded a concerted effort in examining the coproduced nature (Households: service receptors and Municipalities: service providers) …

Texturing In Bi2Te3 Alloy Thermoelectric Materials: An Applied Physics Investigation, Oluwagbemiga P. Ojo

USF Tampa Graduate Theses and Dissertations

Thermoelectric devices provide the means for direct conversion between heat and electricity. The device conversion efficiency, or performance, is directly related to the thermoelectric figure of merit, ZT, of the working materials. Bismuth telluride alloys are the materials currently in use in most thermoelectric devices for near room temperature solid-state refrigeration and power conversion applications. The vast majority of publications in the literature on thermoelectricity report on investigations towards developing new materials with enhanced thermoelectric properties, however Bi₂Te₃ alloys have been used in thermoelectric devices for decades.

In this thesis, an investigation of crystallographic texturing on large …

Teachers' Perspectives Of Implementing Restorative Justice, Antonio G. Smith

USF Tampa Graduate Theses and Dissertations

The use of restorative justice in the school system is an emerging philosophy for handling student discipline that seeks alternative methods for solving problematic behavior than traditional or retributive approaches that are detrimental to the education and well-being of students. Student discipline is a controversial topic in education circles, resulting in many school districts looking to implement restorative practice program initiatives. Responses that are restorative, largely decrease the chances of recidivism. Zero-tolerance policies that were originally enforced to keep schools safe, have proven to not have the desired effect as intended, most arguably making schools less safe. There is a …

Jane Anger Her Protection For Women And The Emergence Of A Radical Female Voice In Late Sixteenth Century England, Ashley M. Wessel

USF Tampa Graduate Theses and Dissertations

This thesis explores how women authors responded to masculine discourses of dominance in late sixteenth-century England. Directly, it concentrates on the pamphlet Jane Anger her Protection for Women, written in 1589 and published under the pseudonym Jane Anger. I argue Anger’s pamphlet was a radical voice within Elizabethan print culture which lends a view into gender politics of the time in which this piece was produced. I also argue that though Anger’s target audience was the gentlewomen of England, she crafted her pamphlet for a broad audience that included any literate man or woman across social station. The importance …

Automated Identification Of Stages In Gonotrophic Cycle Of Mosquitoes Using Computer Vision Techniques, Sherzod Kariev

USF Tampa Graduate Theses and Dissertations

In this paper, we design Computer Vision techniques to determine stages in the Gonotrophic cycle of mosquitoes. The dataset for our problem came from 125 adult female mosquitoes - each of which belonged to one of three species - Aedes aegypti, Culex quinquefasciatus, and Anopheles stephensi. The mosquitoes were raised in a lab and passed through all fourGonotrophic stages (Un-fed, Fully-fed, Semi-gravid, and Gravid). At each stage, their images were captured on a plain background via a Xiaomi smartphone, resulting in a dataset of 1784 images. The images were then augmented using standard techniques to generate a larger dataset of …

Assessing Morphological Response And Vulnerability Of Barrier Islands To Extreme Storms In Northwest Florida, Jacob Adam

USF Tampa Graduate Theses and Dissertations

Barrier islands shield the mainland coast from the effects of extreme storms such as increased wave energy and storm surge. During these events, however, barrier morphology can be altered by erosive forces. Thus, compromising the protection offered and leading to increased impact on the mainland. The St. Joseph Peninsula, located in the Northwest of the Gulf of Mexico, is one such barrier at threat from storm-induced erosion. Presented here is an assessment of morphology change induced by two major storms to impact the peninsula, Hurricanes Dennis 2005 and Michael 2018. These changes characterize the erosive/depositional patterns that can be expected …

Constructing Frameworks For Task-Optimized Visualizations, Ghulam Jilani Abdul Rahim Quadri

USF Tampa Graduate Theses and Dissertations

Visualization is crucial in today’s data-driven world to augment and enhance human understanding and decision-making. Effective visualizations must support accuracy in visual task performance and expressive data communication. Effective visualization design depends on the visual channels used, chart types, or visual tasks. However, design choices and visual judgment are co-related, and effectiveness is not one-dimensional, leading to a significant need to understand the intersection of these factors to create optimized visualizations. Hence, constructing frameworks that consider both design decisions and the task being performed enables optimizing visualization design to maximize efficacy. This dissertation describes experiments, techniques, and user studies to …

Dynamical System And Parameter Identification For Power Systems, Abdullah Abdulrahman Alassaf

USF Tampa Graduate Theses and Dissertations

The complexity of dynamical analysis has been growing to suffice the understanding and modeling of dynamical systems. Besides its nonlinearity and high-dimensionality, the dynamics of power systems contain uncertainty that complicates its analysis. Recently, dynamical modeling has been categorized into three types: white-box, black-box, and gray-box. White-box modeling has the accessibility of all system components. Black-box modeling has the observability of the system measurements without knowing the actual system. Gray-box modeling has the observability of the system measurements with the reachability to some of the system components. The scope of this dissertation focuses on black-box and gray-box models to achieve …

Who To Choose? Rating Broker Best Practices In The Medicare Advantage Industry, Darwin R. Hale

USF Tampa Graduate Theses and Dissertations

The purpose of this study is to help navigate the U.S. Healthcare system in a way that maximizes value and minimizes risk to Medicare Beneficiaries. We do this through the creation of a tool that will aid in the selection of an independent health broker. Brokers are the trusted resource who have the responsibility and expertise to optimize client value through needs analysis, education, and expectations setting. Beneficiaries need help with life impacting health and wellness decisions and ongoing support across the continuum of care. The qualitative research included interviews of industry experts with combined Medicare experience of more than …