Digital Commons Network^™

Alien Encounters And The Alien/Human Dichotomy In Stanley Kubrick‘S 2001: A Space Odyssey And Andrei Tarkovsky‘S Solaris, Keith Cavedo

USF Tampa Graduate Theses and Dissertations

The alien encounter has long been a defining and popular subject of science fiction cinema. However, Stanley Kubrick's 2001: A Space Odyssey (1968) and Andrei Tarkovsky's Solaris (1972) are interrogative, complex, and distinct artistic accomplishments that stand apart from and above the conventional science fiction film. 2001 and Solaris not only represent but complicate the alien/human dichotomy; in the end, they destabilize the dichotomy and even suggest a radical synthesis of the dichotomous elements. 2001 and Solaris further emphasize epistemological and specifically anthropocentric limitations when it comes to understanding the alien or attempting to make sense of the alien encounter. …

Influence Of Crosslink Density On Swelling And Conformation Of Surface-Constrained Poly(N-Isopropylacrylamide) Hydrogels, Ryan S. Cates

USF Tampa Graduate Theses and Dissertations

A stimuli-responsive microgel is a three-dimensional polymer network that is able to absorb and expel a solvent (commonly water). These materials are unique in the fact that their sponge-like behavior can be actuated by environmental cues, like temperature, ion concentration, pH, and light. Because of the dynamic properties of these materials they have found applications in drug-delivery systems, micro-assays, selective filtration, artificial muscle, and non-fouling surfaces. The most well-known stimuli-responsive polymer is Poly(N-isopropylacrylamide) or PNIPAAm and it experiences a switchable swelling or deswelling over a critical temperature ( T_c=~32°C). Below the critical temperature, the gel begins mixing with …

Optimization Of A Ball-Milled Photocatalyst For Wastewater Treatment Through Use Of An Orthogonal-Array Experimental Design, Bradley J. Ridder

USF Tampa Graduate Theses and Dissertations

The effects of various catalyst synthesis parameters on the photocatalytic degradation kinetics of aqueous methyl orange dye are presented. The four factors investigated were: i) InVO₄ concentration, ii) nickel concentration, iii) InVO₄ calcination temperature, and iv) ballmilling time. Three levels were used for each factor. Due to the large number of possible experiments in a full factorial experiment, an orthogonal-array experimental design was used. UV-vis spectrophotometry was used to measure the dye concentration. The results show that nickel concentration was a significant parameter, with 90% confidence. The relative ranking of importance of the parameters was nickel concentration > InVO …

Low Documented Risk Cesarean Sections And Late-Preterm Births: The Florida Experience, Heather Breeze Clayton

USF Tampa Graduate Theses and Dissertations

There are increasing concerns about the excessive use of cesarean delivery in the United States, as cesarean deliveries have been associated with adverse maternal and infant health outcomes. Currently, the cesarean section (C/S) rate for Florida is the second highest in the nation. Furthermore, preliminary reports from the Florida Department of Health (FDOH) have implicated the increasing rate of cesarean delivery to an increase in the rate of late preterm births (PTB) in Florida (births at 34 to 36 weeks gestational age). Information on the impact of late PTB associated with cesarean delivery on the rate of maternal and infant …

Total Internal Reflection Holographic Microscopy (Tirhm) For Quantitative Phase Characterization Of Cell-Substrate Adhesion, William Mason Ash Iii

USF Tampa Graduate Theses and Dissertations

Total Internal Reflection Holographic Microscopy (TIRHM) combines near-field microscopy with digital holography to produce a new form of near-field phase microscopy. Using a prism in TIR as a near-field imager, the presence of microscopic organisms, cell-substrate interfaces, and adhesions, causes relative refractive index (RRI) and frustrated TIR (f-TIR) to modulate the object beam's evanescent wave phase front. Quantitative phase images of test specimens such as Amoeba proteus, Dictyostelium Discoideum and cells such as SKOV-3 ovarian cancer and 3T3 fibroblasts are produced without the need to introduce stains or fluorophores. The angular spectrum method of digital holography to compensate for …

School Psychologists Involvement And Perceived Preparedness In The Provision Of Suicide-Related Services: A Comparison Of Practitioners Serving Different School Levels, Jennifer M. Cunningham

USF Tampa Graduate Theses and Dissertations

While the manifestation of suicidal thoughts and/or behavior is more common among adolescents, children are capable of, and do experience, suicidal ideation as well as demonstrate suicidal behaviors. Suicide is the sixth leading cause of death among children aged 5-14 years (Center for Disease Control [CDC], 2008). However, children may not always be referred or brought to the attention of the school psychologist, as their threats may be considered immature and unfounded. The purpose of this study is to provide data that clarifies the need for the provision of suicide-related services for children in elementary school. An archival dataset of …

Manifestations Of Hidden Curriculum In A Community College Online Opticianry Program: An Ecological Approach, Barry Hubbard

USF Tampa Graduate Theses and Dissertations

Understanding the influential factors at work within an online learning environment is a growing area of interest. Hidden or implicit expectations, skill sets, knowledge, and social process can help or hinder student achievement, belief systems, and persistence. This qualitative study investigated how hidden curricular issues transpired in an online learning environment's institutional and organization systems using an ecological paradigm. A phenomenological approach rooted in a case study context was used to explore the experiences and perceptions of a group of students, faculty, and administrators involved with an online academic program (opticianry) at a community college. Interviews, non-participant observation, and a …

An Interpretive Policy Analysis Of Bullying Law And The Development Of Bullying Policy In A Central Florida School District, Scott D. Richman

USF Tampa Graduate Theses and Dissertations

Bullying has been an issue in schools and became a major concern for school leaders over the past two decades. Olweus (1993) defined three characteristics of bullying behavior: intent to harm another, repeated offenses, and a perceived or real power imbalance. This study examined the law's provisions concerning bullying in schools; specifically examining the Florida Jeffrey Johnston Stand Up for All Student Act (2008), and the required policy implemented in Hillsborough County Public Schools (HCPS). Discourse theory framed the study, as defined by Habermas (1996) and the derivative Interpretive Policy Analysis was used to analyze the district policy, as defined …

Writing To (Re)New Orleans: The Post-Hurricane Katrina Blogosphere And Its Ability To Inspire Recovery, Daisy Pignetti

USF Tampa Graduate Theses and Dissertations

Nearly every website or software application these days features a feed to subscribe to, a network to join, or a social timeline to track—all of which do their part to influence public opinion, promote products, and bring people closer together. Being a blogger since 2003 exposed me to these user-generated trends, but never did I expect my blog space, or any others, to play such an important role in my emotional well-being; not until Hurricane Katrina hit. Sharing my story as a transplanted New Orleanian watching the disaster unfold from afar in a public forum quickly linked me to other …

Exploring Colorectal Cancer Diagnosis Disclosure To First-Degree Relatives: An African American Family Case Series, Kamilah B. Thomas

USF Tampa Graduate Theses and Dissertations

Colorectal cancer (CRC) is the second leading cancer killer in the United States and the third most common cancer in African American men and women. Though the overall death rates have declined, this reduction in mortality is smaller for African Americans than for Whites. Factors that are protective against colorectal cancer include occupational or recreational physical activity, a diet high in fruits and vegetables, and colorectal cancer screening with removal of polyps (polypectomy) before they progress to cancer. Compliance with CRC screening recommendations requires people to know if a first-degree relative (parent, sibling, and child) or second-degree relative (aunt, uncle, …

Play: A Process-Driven Study Of Design Discovery, Kuebler Wilson Perry

USF Tampa Graduate Theses and Dissertations

Frequently, in architecture and in other professions, a results-oriented approach to design truncates the creative process. Architecture is a man-made intervention, ultimately involving a fair bit of destruction in order to eventually arrive in a state of hopefully coherent grace in the lives of its users and the built or natural context (Clark 2000, 10). It is unacceptable to proceed hastily into such complex territory-without a degree of rigor and process-driven creativity commensurate with the gravity of creating large scale, reality-altering, life-affecting structures.

A process-driven inquiry requires many hours of experiment, revision, and meandering about that may initially have no …

Application Of Luminescence Sensors In Oxygen Diffusion Measurement And Study Of Luminescence Enhancement/Quenching By Metallic Nanoparticles, Sanchari Chowdhury

USF Tampa Graduate Theses and Dissertations

The first part of this dissertation deals with the application of a luminescence quenching method to measure diffusion and permeation coefficients of oxygen in polymers. Most luminescence oxygen sensors do not follow linearity of the Stern-Volmer (SV) equation due to heterogeneity of luminophore in the polymer matrix, thus the complexity of data analysis is increased. To circumvent this limitation, inverted fluorescence microscopy is utilized in this work to investigate the SV response of the sensors at the micron-scale. In these diffusion experiments, oxygen concentration is measured by luminescence changes in regions with high SV constants and good linearity. Thus, we …

(Im•Print) A Material Investigation To Encourage A Haptic Dialog, Julie Marie Vo

USF Tampa Graduate Theses and Dissertations

The word impression encompasses a dual meaning which desires to be more fully explored in the built realm. An (im-print) has a powerful impact because the message becomes an indelible mark embedded within the material. Physically, an impression is made by the pressure of one object on or into another, leaving behind a trace of this interaction on the surface. This process has the potential to create a vivid memory within the participant who comes into contact with it.

The idea of imprint can become a part of the process of design both physically and conceptually. As polished concrete can …

Architecture As Canvas, Monika Blazenovic

USF Tampa Graduate Theses and Dissertations

Cities are increasingly becoming vessels of consumption, while various opportunities for production of space and public expression are taken away from the city's inhabitants. New architectural interventions often disregard a site's previously developed character and further aid in wiping away memories closely related to a city's cultural past. Banja Luka, the second largest city of Bosnia and Herzegovina, has been an important cultural center, even through years of unrest. Within the city's main plaza stands an unfinished concrete structure (Fig. 3), built with pre-war conceptions of a hotel. The structure's location within the city of Banja Luka has provided for …

Theoretical And Experimental Simulation Of Passive Vacuum Solar Flash Desalination, Mohammad Abutayeh

USF Tampa Graduate Theses and Dissertations

Experimental and theoretical simulations of a novel sustainable desalination process have been carried out. The simulated process consists of pumping seawater through a solar heater before flashing it under vacuum in an elevated chamber. The vacuum is passively created and then maintained by the hydrostatic balance between pressure inside the elevated flash chamber and outdoor atmospheric pressure.

The experimental simulations were carried out using a pilot unit built to depict the proposed desalination system. Theoretical simulations were performed using a detailed computer code employing fundamental physical and thermodynamic laws to describe the separation process, complimented by experimentally based correlations to …

Feral Cats And The People Who Care For Them, Loretta Sue Humphrey

USF Tampa Graduate Theses and Dissertations

Sociologists have described the characteristics of individuals who become involved in social movements, their motivations for becoming involved, and the methods used to recruit participants. One group that has been underrepresented in the existing literature is feral cat caretakers. The purpose of this study is to examine the traits of this group, information which would be valuable to groups dedicated to educating the public about the plight of feral cats, groups which offer information and resources to caretakers, individuals wishing to network with other feral cat caretakers, and policy makers in need of knowing what options exist to deal with …

Fabrication And Characterization Of Surfactant-Free Pbse Quantum Dot Films And Pbse-Polymer Hybrid Structures, Gayan S. Dedigamuwa

USF Tampa Graduate Theses and Dissertations

This work describes an experimental investigation of methods of synthesis, determination of structural and physical properties, and analysis and correlation of the properties to the structures of semiconductor quantum dots and quantum dot-polymer hybrid structures. These structures are investigated for applications in flexible solar cell devices. The main synthesis process used in the work was a Laser-Assisted Spray (LAS) process that was developed in our laboratory to deposit surfactant-free PbSe quantum dot (QD) films directly on a substrate. The QD films formed by this technique are in close contact with each other forming a percolation path for charge transport. Analytical …

Improving Ground Penetrating Radar Resolution Of Features Of Active Sinkholes, Bradley Tyler Gooch

USF Tampa Graduate Theses and Dissertations

Ground penetrating radar (GPR) is widely used to identify locations of sinkholes in covered karst terrain in Florida. Some sinkholes serve as hydraulic conduits between the surficial and underlying aquifers. Their role is critical in determining the surficial aquifer response to pumping in deeper aquifers. Improved methods for discriminating between hydraulically active sinkholes and plugged sinkholes could help regional water management. In the covered karst of west-central Florida a clay-rich weathering horizon forms over the limestone. The clay-rich layer is in turn overlain by surficial sands. Ground penetrating radar profiles typically show a strong reflector from the top of clay-rich …

Tango Panopticon: Developing A Platform For Supporting Live Synchronous Art Events Based In Relational Aesthetics, Michael Edward Stillo

USF Tampa Graduate Theses and Dissertations

The Tango Panopticon project merges art with technology to create a live and synchronous art experience which is just as much about the participants as it is about the observers. The goal of this project is to create a dialogue between observers of the event in the hopes of creating new social connections where there were none before. This goal is achieved by allowing observers to view the event from anywhere around the world on a computer via the internet and participate in a dialogue with other users on the website.

The other objective of this project is to create …

Gatekeeping And Citizen Journalism: A Qualitative Examination Of Participatory Newsgathering, Amani Channel

USF Tampa Graduate Theses and Dissertations

For nearly sixty years, scholars have studied how information is selected, vetted, and shared by news organizations. The process, known as gatekeeping, is an enduring mass communications theory that describes the process by which news is gathered and filtered to audiences. It has been suggested, however, that in the wake of online communications the traditional function of media gatekeeping is changing.

The infusion of citizen-gathered media into news programming is resulting in what some call a paradigm shift. As mainstream news outlets adopt and encourage public participation, it is important that researchers have a greater understanding of the theoretical implications …

Filtration Efficiency Of Surgical Masks, Erin Sanchez

USF Tampa Graduate Theses and Dissertations

Surgical masks are intended to be used to prevent transmission of disease from a health care worker to a patient. Often times, they are relied upon by health care workers for their own protection. In light of recent developments regarding preparation for health care worker response to global infectious diseases such as H1N1 Influenza, health care workers may experience a false sense of security when wearing surgical masks. The goal of this study was to evaluate the filtration efficiency of a double strap tie-on surgical mask. The manufacturer asserts a >95% efficiency with a 0.1 um challenge aerosol under FDA …

Assessing The Effectiveness Of The Roaring Branch Bmp Retrofit Using Macroinvertebrate Bioassessment, James L. Banning

USF Tampa Graduate Theses and Dissertations

Using benthic macroinvertebrates to measure stream health has been widely used and accepted around the world. Macroinvertebrates are resident monitors of chronic impairment in a stream since they are relatively sessile and most commonly respond to disturbance by drift but can recolonize a restored stream reach very quickly. This study tested the effectiveness of macroinvertebrate metrics developed through the Rapid Bioassessment Protocol (RBP) to detect changes in stream integrity as the result of placement of a best management practice (BMP), installed on a tributary of Roaring Branch, located in Columbus, Georgia. The BMP was designed to attenuate flow to reduce …

Where Christ Dies Daily: Performances Of Faith At Orlando‘S Holy Land Experience, Sara B. Dykins Callahan

USF Tampa Graduate Theses and Dissertations

This manuscript focuses on performances of place and faith inside the Holy Land Experience (HLE), an edutainment complex nestled in the fantasy nexus of Orlando, Florida. A self-proclaimed living-history museum, the HLE includes animatronic Bible characters and musical dramas. The HLE enacts and embodies evangelical narratives of Christianity and Christian faith, and visitors to the park are asked to join the performances, blurring the distinctions between spectators and professional actors. I argue that visitors' performances of faith invest the space of the HLE with sacredness, while the location and design of the HLE infuses the space with elements of the …

Looking Good And Taking Care: Consumer Culture, Identity, And Poor, Minority, Urban Tweens, Elizabeth Edgecomb

USF Tampa Graduate Theses and Dissertations

Looking Good and Taking Care: Consumer Culture, Identity, and Poor, Minority, Urban Tweens is an ethnographic examination of how poor, minority, urban tweens (age 7-14) use consumer culture to create and perform their personal and social identities. Although portrayed in mass media as selfish and hedonistic, this work finds tweens creating profoundly social, giving, and caring identities and relationships through consumption. Their use of consumer culture is also a form of political resistance that subverts their place in the age, class, and race hierarchy. These tweens use “looking good” (attention to grooming, style, and behaving respectably), and not name brand …

School Choice At The Crossroads Of Race, Class, And Accountability: An Analysis Of The Effects Of Voluntary School Choice On Elementary Schools In A Large District In The Southeastern United States, Teresa Craig Evans

USF Tampa Graduate Theses and Dissertations

In recent years, the responsibility for the desegregation of American public schools has transitioned from federal court mandates to school board programs and policies. There is widespread belief that this has resulted in the resegregation of schools across the country. One popular policy that is purported to provide the opportunity for voluntary integration, along with accountability for academic quality, is school choice. The purpose of this study was to consider the implications of such a policy in one large school district. There is an extensive body of research exploring who participates in school choice, how they make their choices, and …

On The Involvement Of The Low-Density Lipoprotein Receptor In The Pathogenesis And Progression Of Alzheimer’S Disease, Jose Francisco Abisambra Socarras

USF Tampa Graduate Theses and Dissertations

Alzheimer's disease (AD) is the most prevalent form of age-associated dementia. Cholesterol dysregulation is linked with AD onset. Besides age, the most important risk factor associated with AD is the inheritance of the epsilon-4 allele of apolipoprotein E, a cholesterol transporter. In addition, while hypercholesterolemia has been shown to be an independent risk factor for AD, the nature of the cholesterol-AD link is still not clear. This gap in our understanding is partly due to a lack of knowledge about cholesterol metabolism in the central nervous system (CNS).

The low-density lipoprotein receptor (LDLR) is the main receptor of apoE and …

Saving Energy In Network Hosts With An Application Layer Proxy: Design And Evaluation Of New Methods That Utilize Improved Bloom Filters, Miguel Jimeno

USF Tampa Graduate Theses and Dissertations

One of the most urgent challenges of the 21st century is to investigate new technologies that can enable a transition towards a society with a reduced CO₂ footprint. Information Technology generates about 2% of the global CO₂, which is comparable to the aviation industry. Being connected to the Internet requires active participation in responding to protocol messages. Billions of dollars worth of electricity every year are used to keep network hosts fully powered-on at all times only for the purpose of maintaining network presence. Most network hosts are idle most of the time, thus presenting a huge …