Digital Commons Network^™

Evaluation And Modeling Of Internal Water Storage Zone Performance In Denitrifying Bioretention Systems, Thomas Joseph Lynn

USF Tampa Graduate Theses and Dissertations

Nitrate (NO3) loadings from stormwater runoff promote eutrophication in surface waters. Low Impact Development (LID) is a type of best management practice aimed at restoring the hydrologic function of watersheds and removing contaminants before they are discharged into ground and surface waters. Also known as rain gardens, a bioretention system is a LID technology that is capable of increasing infliltration, reducing runoff rates and removing pollutants. They can be planted with visually appealing vegetation, which plays a role in nutrient uptake. A modified bioretention system incorporates a submerged internal water storage zone (IWSZ) that includes an electron donor to support …

Development Of A New Guidewire Torque Device, Erika Rigaud

USF Tampa Graduate Theses and Dissertations

Guidewires have been used in many operating rooms by vascular surgeons to assist them in positioning and maneuvering through a tortuous stenosis or lesion to a desired location, and to be used as a guide for the implantation of a catheter. Surgeons are tasked with having to insert a guidewire inside a small cavity, which requires a high level of skill and patience. The insertion of the guide wire is controlled by a torque device, which allows a surgeon to advance, rotate and grip the wet hydrophilic coating of the guidewire. Despite its many advantages, the torque device does, in …

The Problems And Potentials In Haunted Maternal Horror Narratives, Sarah Laura Novak

USF Tampa Graduate Theses and Dissertations

This thesis will examine the representation of motherhood in horror cinema in order to discuss the problems and potentials of repeated domestic traditions. While maternal horror narratives impose gender roles based on heterosexual hegemonic biases, some of these films also examine the feminine experience and criticize the patriarchal institutional structures that affect domesticity and femininity. If we discuss these promising features, we can build on the implied trajectories, and engender more representation of marginalized experience in order to seek out new methods of cultural stabilization and unity. This proposal relies on Jacques Derrida's theory of hauntology, which addresses past and …

Inter-Organizational Social Network Information Systems: Diagnosing And Design, Matthew T. Mullarkey

USF Tampa Graduate Theses and Dissertations

While IS research into on-line Inter-Personal (IP) Social Networks (SN) is highly visible, there has been surprisingly little focus on the use of on-line social networks for Inter-Organizational (IO) communications, interactions, and goal achievement. We explore the issues and challenges facing organizations in their design and use of inter-organizational social network information systems (IO SNIS). Artifact design principles are drawn from a new and insightful model that contrasts the advantages of existing innovative inter-personal (IP) SNIS artifacts with Social Network Theory on differences between IP and IO Social Networks. This research extends the existing streams of IS social networking research …

Biomaterial Testing Methodology For Long-Term In Vivo Applications: Silicon Carbide Corrosion Resistance, Biocompatibility And Hemocompatibility, Maysam Nezafati

USF Tampa Graduate Theses and Dissertations

Biomedical devices that function in-vivo offer a tremendous promise to improve the quality of life for many who suffer from disease and trauma. The most important consideration for these devices is that they interact with the physiological environment as designed without initiating a deleterious inflammatory response. ISO 10993 outlines the current international guideline for investigating the biocompatibility of such devices. Numerous groups report the use of ISO 10993 as the basis for their experimental evaluation of candidate materials for neuroprosthetics, as well as other biomedical devices, however most of these reports fail to completely comply with the standard. This leads …

Paradise Always Already Lost: Myth, Memory, And Matter In English Literature, Elizabeth Stuart Angello

USF Tampa Graduate Theses and Dissertations

This dissertation follows a collection of agentive objects around and through the networks of humans and nonhumans in four disparate works of English literature: the Anglo-Saxon poem The Dream of the Rood, William Shakespeare's narrative poem The Rape of Lucrece, Thomas Hardy's novel The Woodlanders, and Philip Pullman's trilogy His Dark Materials. Applying the emergent discourses of object-oriented analyses, I posit the need for a critique that considers literary objects not as textual versions of real-world objects but as constructs of human imagination. What happens when we treat nonhuman or inanimate objects in literature as full …

Manipulating The Tumor Microenvironment For Therapeutic Benefit, Kate M. Bailey

USF Tampa Graduate Theses and Dissertations

The physical tumor microenvironment contributes significantly to carcinogenesis, cancer progression and metastatic dissemination. Two main components of the tumor microenvironment, hypoxia and acidosis, are present in nearly every solid tumor and act as powerful selection forces against the tumor. Hypoxia and acidosis promote tumor heterogeneity and contribute to chemotherapy and radiotherapy resistance. This dissertation interrogates methods to target the tumor microenvironment including two novel studies describing mechanisms of buffer therapy resistance and targeting tumor hypoxia with vasodilators to enhance the efficacy of a hypoxia activated prodrug, TH-302.

In the first study, mechanisms of buffer therapy resistance were identified and detailed. …

Applying Modeled Hemi-Ellipsoids To The Study Of Pressure Distribution In Normal And Paraplegic Seated Subjects, Alicia Billington

USF Tampa Graduate Theses and Dissertations

The three goals of this research were to investigate how normal subjects move while seated, how paraplegic patients move while seated, and whether seated movements can be modeled using a hemi-ellipsoid shape. Pressure readings were recorded at 11 Hz using a 36 by 36 sensor pressure map by XSENSOR. Subjects were instructed to move or perform pressure relief as they normally would while seated. Analysis was performed using Microsoft Excel with Solver and Matrix.xla add-ins and automated with VBA code. Major movements and time intervals between movements were calculated by locating the area of maximum pressure on each hemi-buttock for …

Early Developmental Impacts On Male Traits And Female Preference In Zebra Finches (Taeniopygia Guttata), Martyna Boruta

USF Tampa Graduate Theses and Dissertations

Some male sexually selected traits are sensitive to stressors early in life and provide females with information to discriminate among males with different developmental experiences. Moreover, female early life experiences could also impact which males they choose. Females might either choose honest traits indicative of male quality, no matter their own experiences, or they might choose mates to match or compensate for their own experiences. To determine how developmental stressors alter male sexually-selected traits and female preference thereof, I exposed zebra finches (Taeniopygia guttata, ZEFI) to i) lipopolysaccharide (LPS), an immunogenic, Gram-negative bacterial component, ii) corticosterone (CORT), an avian stress …

Can The Usa National Weather Service Heat Index Substitute For Wet Bulb Globe Temperature For Heat Stress Exposure Assessment?, Ivory Iheanacho

USF Tampa Graduate Theses and Dissertations

Heat stress occurs when the body cannot adequately cool itself due to the combined contributions of metabolic heat, environmental factors and clothing. Heat stress found in the workplace puts employees at risk of developing heat-related illnesses, disorders and could be fatal. The wet bulb globe temperature (WBGT) index is the current method used to assess environmental contributions to heat stress in an occupational setting. The purpose of this thesis was to explore whether the National Weather Service's Heat Index (HI) could substitute for the WBGT Index during occupational heat stress exposure assessment. The possibility of using the HI for heat …

The Use And Effectiveness Of Online Social Media In Volunteer Organizations, Amy J. Connolly

USF Tampa Graduate Theses and Dissertations

Volunteer organizations face two challenges not found in non-volunteer organizations: recruiting and retaining volunteers. While social media use is increasing amongst individuals, its use and effectiveness for volunteer recruitment and retention by volunteer organizations is unknown. The dissertation reports the results of three studies to investigate this important question. Using a mixed-methods approach, it addressed the dual nature of social media and its effectiveness by including volunteer organizations and social media users.

This dissertation found that although volunteer organizations are not using social media effectively, they could virtualize requirements of the recruitment process by focusing on relatable events instead of …

Characterization Of Waste Anesthetic Gas Exposures To Veterinary Workers In The Tampa Bay Area, Kyle Vogel

USF Tampa Graduate Theses and Dissertations

Veterinarians routinely conduct surgical operations on animals while veterinary technicians administer anesthetic gas to sedate the animal prior to an operation. One commonly used anesthetic agent in veterinary clinics is isoflurane. Veterinary workers have the potential to be exposed to this gas during surgical operations. The Occupational Safety and Health Administration (OSHA) does not have a specific Permissible Exposure Limit (PEL) for isoflurane, however The National Institutes for Health (NIH) does advise that workers should not be exposed to isoflurane in concentrations exceeding 2 parts per million (ppm) for an 8 hour Time Weighted Average (TWA).

Animal clinics vary in …

Negotiating Muslim Womanhood: The Adaptation Strategies Of International Students At Two American Public Colleges, Amber Michelle Gregory

USF Tampa Graduate Theses and Dissertations

From a Western perspective, North Americans and Western Europeans perceive Muslim women as being oppressed (Andrea 2009; Lutz 1997, 96; Ozyurt 2013). Led by this assumption, some view studying abroad as an international student as an experience that allows Muslim women the opportunity to "escape" this supposed oppression and to know "freedom" in the U.S. However, Muslim women's experiences are more dynamic and complex than this dualism suggests. In this thesis, I explore adaptation strategies of Muslim women international students, and how gender, race, and religion affect their experiences while abroad. Furthermore, I explore the women's use of emotion management …

Novel Cell Cycle Proteins In Apicomplexan Parasites, Carrie Butler

USF Tampa Graduate Theses and Dissertations

Apicomplexans are responsible for major human diseases such as toxoplasmosis caused by Toxoplasma gondii (T. gondii) and the deadliest form of malaria caused by Plasmodium falciparum (P. falciparum). The genomes of these pathogens are now sequenced ushering in a new era of drug development. A major hurdle to exploiting this genome resource is that a large number of the encoded genes are "hypotheticals" and have yet to be characterized. Hypothetical proteins comprise roughly half of the predicted gene complement of T. gondii and P. falciparum and represent the largest class of uniquely functioning proteins in these parasites.

Following the idea …

Age-Associated Increases In Fkbp51 Facilitate Tau Neurotoxicity, Laura J. Blair

USF Tampa Graduate Theses and Dissertations

Tau is a protein which regulates microtubule stability and is heavily involved in axonal transport. This stability is dynamically controlled in part by over 40 phosphorylation sites across the tau protein which allows for binding and release from the microtubules. However, if abnormal hyperphosphorylation occurs, tau dissociates from the microtubules. Once released, the microtubules become unstable and the aberrant tau mislocalizes from the axon to the somatodendric compartment, where it aggregates. These aggregates are made of many pathological forms of tau including oligomeric species, paired helical filaments, and neurofibrillary tangles, all of which have associated toxicities. Tau pathology is a …

Diffuse Nutrient Pollution From Residential Catchments, Melissa Rachelle Butcher

USF Tampa Graduate Theses and Dissertations

Nonpoint source nutrient pollution is diffuse pollution lacking discrete origin and conveyance. This thesis synthesizes and critically reviews research on residential nitrogen and phosphorus loss to stormwater runoff and leaching. The evaluation pulls from research covering influential socio-demographic indicators, such as use of lawn maintenance services and homeowner fertilizer practices. The extent to which such social and economic factors may influence the prevalence and fate of diffuse nutrients in stormwater runoff from residential areas has not been adequately established. Understanding the source and influencing factors of diffuse nutrient pollution is important in order to effectively protect surface and groundwater resources. …

Using Video Feedback To Increase Eye Contact During Mock Job Interviews For Transition Age Adults With Autism Spectrum Disorders, Alexia Barnes

USF Tampa Graduate Theses and Dissertations

Abstract

Autism Spectrum Disorders (ASD) are characterized by impairments in social and communicative behaviors. These impairments can impact an individual's ability to obtain employment. The rates of unemployment for individuals with ASD are much higher than those of their peers without ASD. This study used a multiple baseline design across three participants diagnosed with ASD to determine the effectiveness of video feedback in improving eye contact duration during mock job interviews. After video feedback sessions, eye contact duration increased across all participants. On average, participant's eye contact duration was at 30.2% during baseline. These percentages increased to an average of …

"Is That What You Dream About? Being A Monster?": Bella Swan And The Construction Of The Monstrous-Feminine In The Twilight Saga, Amanda Jayne Firestone

USF Tampa Graduate Theses and Dissertations

ABSTRACT

This dissertation argues that Bella Swan is a representation of Barbara Creed's monstrous-feminine which serves to reinforce ideologies that insist women are abject, inherently dangerous to men, and threatening to a patriarchal status quo. Through close-textual analysis of The Twilight Saga, I demonstrate how the monstrous-feminine frames the hysterical teenage body, hypersexuality, and eternal motherhood as simultaneously unacceptable and unavoidable. These negative women's stereotypes continue to persist in dominant popular culture, and this doublebind is overcome only by the impossible perfection of vampirism. The monstrous-feminine invites constructions of teenage bodies as unstable and unreliable, women's sexuality as dangerous and …

Water And Health In The Nandamojo Watershed Of Costa Rica: Community Perceptions Towards Water, Sanitation, And The Environment, James Mcknight

USF Tampa Graduate Theses and Dissertations

Understanding the relationships between human health, water, sanitation, and environmental health is a requirement to understanding the challenges that face researchers when it comes to addressing global health relating to water and sanitation. Access to improved water and sanitation is not only a precondition to health, but to all aspects of daily living. Target 7.C of the Millennium Development Goals (MDGs) addresses worldwide disparities in access to improved water and sanitation by calling for the reduction in "half of the proportion of people without sustainable access to safe drinking water and sanitation by 2015". Over 90% of the population of …

Evaluating The Efficacy Of Shaping With A Percentile Schedule To Increase The Duration Of Sustained Interaction Following A Bid For Joint Attention In Children With Autism, Therese Gutbrod

USF Tampa Graduate Theses and Dissertations

This study examined the use of shaping with a percentile schedule to increase the duration of the interaction following a bid for joint attention in children with autism. Specifically, the therapist initiated a bid for joint attention and reinforced longer successive approximations in seconds of sustained interaction with the therapist and activity. A percentile schedule ranked the most recent 10 observations and reinforcement was provided if the current observation equaled the sixth ranking. Most-to-least prompting was used if the child failed to meet the calculated criterion. Shaping with a percentile schedule of reinforcement was effective at increasing the duration of …

Targeting Cancer Metabolism With Ketosis And Hyperbaric Oxygen, Angela M. Poff

USF Tampa Graduate Theses and Dissertations

Cancer cells exhibit an abnormal metabolic phenotype characterized by glycolysis and lactate fermentation in the presence of oxygen, a phenomenon known as the Warburg effect. This dysregulated metabolism plays an important role in every aspect of cancer progression, from tumorigenesis to invasion and metastasis. The Warburg effect is a common phenotype shared by most, if not all, cancer types. It is especially prominent in metastatic tumors, which are notoriously resistant to treatment and responsible for the majority of cancer-related deaths. Thus, metabolic therapies which target the Warburg effect could offer novel therapeutic options for most cancer patients, including those with …

Using Otolith Elemental Composition To Track The Habitat Use, Movements, And Life History Patterns Of Common Snook (Centropomus Undecimalis) And Red Drum (Sciaenops Ocellatus) In The Tampa Bay Estuary, Holly Jacqueline Rolls

USF Tampa Graduate Theses and Dissertations

Knowledge of fish habitat use and connectivity is critical for understanding the structure and dynamics of fish populations and, therefore, necessary for the implementation of successful fisheries management strategies. Tagging is an effective means of providing such information, and the elemental composition contained within fish otoliths is increasingly being used as a natural tag. The chemical composition of otoliths reflects the incorporation of elements from different water bodies and can thus be used to understand the habitat use, movements, and life history patterns of fishes. To assess the applicability of otolith elemental composition as a tagging technique within the Tampa …

Rtemis: Real-Time Tumoroid And Environment Monitoring Using Impedance Spectroscopy And Ph Sensing, Frank Alexander

USF Tampa Graduate Theses and Dissertations

This research utilizes Electrical Impedance Spectroscopy, a technique classically used for electrochemical analysis and material characterization, as the basis for a non-destructive, label-free assay platform for three dimensional (3D) cellular spheroids. In this work, a linear array of microelectrodes is optimized to rapidly respond to changes located within a 3D multicellular model. In addition, this technique is coupled with an on chip micro-pH sensor for monitoring the environment around the cells. Finally, the responses of both impedance and pH are correlated with physical changes within the cellular model. The impedance analysis system realized through this work provides a foundation for …

In Search Of The Artist: The Influences Of Commercial Interest On An Art School - A Narrative Analysis, Michael Leonard Sette

USF Tampa Graduate Theses and Dissertations

The current study will investigate how identities and roles of the artist converge with competing identities and roles fostered at the institutional level within an art college as revealed through the marketing literature that they produce to attract students and business partnerships. The sociological focus for this proposal is the tension between art as a creative expressive endeavor and art as a commodity that has entered into social transactions unintended by the original expression of the artist. The researcher documents and describes (via narrative analysis) how an art school negotiates competing relationships between the pressures to teach and promote art …

Measuring The Adaptation Of Military Response During The Second Seminole War Florida (1835-1842): Kocoa And The Role Of A West Point Military Academy Education, Michelle Diane Sivilich

USF Tampa Graduate Theses and Dissertations

Conflict archaeology is a fairly new discipline and is in the process of defining its methods and theories. Recently, the American Battlefield Protection Program has started requiring that grant applicants perform a KOCOA analysis. KOCOA is a modern military technique and stands for Key terrain, Obstacle, Cover and Concealment, Observation, and Avenues of Approach. However, this method was developed for modern warfare, and its adoption by the archaeological community has not yet been analyzed. I argue that this method needs a few modifications to make it more applicable to historical research and that it can be broadened to investigate more …

Statistical Analysis, Modeling, And Algorithms For Pharmaceutical And Cancer Systems, Bong-Jin Choi

USF Tampa Graduate Theses and Dissertations

The aim of the present study is to develop a statistical algorithm and model associ- ated with breast and lung cancer patients. In this study, we developed several statistical softwares, R packages, and models using our new statistical approach.

In the present study, we used the five parameters logistic model for determining the optimal doses of a pharmaceutical drugs, including dynamic initial points, an automatic process for outlier detection and an algorithm that develops a graphic user interface(GUI) program. The developed statistical procedure assists medical scientists by reducing their time in determining the optimal dose of new drugs, and can …

Self-Control Depletion And Nicotine Deprivation As Precipitants Of Smoking Cessation Failure: A Human Laboratory Model, Bryan Heckman

USF Tampa Graduate Theses and Dissertations

The need to understand the reinforcing properties of smoking and potential precipitants of relapse is exemplified by evidence that relapse rates exceed 95%. The Self-Control Strength model, which proposes that self-control is dependent upon limited resources and susceptible to fatigue, may offer insight into the relapse process. Indeed, there is empirical support that engaging in a task that requires self-control, relative to a comparable control, results in performance decrements on subsequent self-control tasks. The primary goal of the current study was to test whether self-control depletion (SCD) may serve as a novel antecedent for cessation failure, using a validated laboratory …

Presentation Of Civic Identity In Online High School Social Studies Discussion Forums, Holly Mcbride

USF Tampa Graduate Theses and Dissertations

Twenty-first century high school students' learning experience in an online setting is no longer limited by a time-constrained schedule, lack of resources, teachers' formalities, and restrictions affecting learning progressions. The list of benefits to the virtual learning experience is vast, however, there are substantial pitfalls and ambiguities that must be resolved. One of the pitfalls for social studies educators is their ability to properly measure whether or not students are gaining prudent civic competences, skills, and dispositions. The mission of social studies education is the acquisition of civic knowledge, but more importantly, the overall development of a lifelong caring, active, …

Implications Of Human Umbilical Cord Blood Cells: An Immunotherapeutic Strategy For Alzheimer's Disease, Donna Darlington

USF Tampa Graduate Theses and Dissertations

ABSTRACT

Alzheimer's disease (AD) is the most common progressive age related dementia and the fourth major cause of mortality in the elderly in the United States. AD is pathologically characterized by deposition of amyloid beta (Aβ) plaques in the brain parenchyma and neurofibrillary tangles (NFTs) within the neuronal soma. While pharmacological targets have been discovered, current strategies for the symptomatic or disease-modifying treatment of AD do not significantly slow or halt the underlying pathological progression of the disease. Consequently, more effective treatment is needed. One possibility for amelioration is using human umbilical cord blood cell (HUCBC) therapy. HUCBCs comprise a …

Using Multimedia Social Storiestm To Enhance Prosocial Behavior Of At-Risk Preschoolers, Daniella Suric

USF Tampa Graduate Theses and Dissertations

This study evaluated Social StoriesTM (SS) with three at-risk preschool children in a high- need public elementary school. Specifically, this study examined the use of a multimedia SS designed to decrease problem behavior and increase prosocial behavior. A multiple baseline design across participants with an ABC sequence was used to assess the impact of the standard SS and multimedia SS on the children's target behaviors. The results of the study indicated that the standard SS was successful in reducing problem behavior and increasing prosocial behavior for all three participating children. The results also indicated that the multimedia SS had positive …