Digital Commons Network^™

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 …

Mercury In The Environment: Field Studies From Tampa, Bolivia, And Guyana, Joniqua A'Ja Howard

USF Tampa Graduate Theses and Dissertations

Tampa (US), Guyana (SA), and Bolivia (SA), are geographically, socially, economically, and politically unique which make them ideal sites to study issues of mercury and sustainability. Mercury’s innate ability to bioaccumulate and biomagnify in aquatic and terrestrial ecosystems poses a severe threat to both human and environmental health. The most vulnerable populations affected by mercury consumption include coastal communities, children, women of child-bearing age, the indigenous poor and persons with high environmental/occupational exposure factors. Communities in the regions of Florida, Bolivia, and Guyana whose diets are high in fish and are environmentally/occupationally exposed to mercury may be at a higher …

I Know I Shouldn’T Generalize, But…: A Rhetorical Critique Of Ethnography In Composition Studies, Micheal W. Taber Jr.

USF Tampa Graduate Theses and Dissertations

This thesis looks at Stephen North's 1987 claim of the limits of ethnography in composition research and looks at modern, published research studies to see how they have heeded North's warnings.

In 1987 Stephen North claimed that the future of ethnographic methodology in composition research was doomed unless those who would adopt this qualitative technique understood its limitations. North argued that each ethnography is only valuable as an individual study, that individual studies are not cumulative towards some absolute and discoverable positivistic model of knowledge. This warning of the problem and limitations of modern qualitative ethnography was issued over 2 …

Perceptions Of Teachers In Their First Year Of School Restructuring: Failure To Make Adequate Yearly Progress, Sharon Moser

USF Tampa Graduate Theses and Dissertations

The 2007-2008 school year marked the first year Florida's Title I schools that did not made Adequate Yearly Progress (AYP) for five consecutive years entered into restructuring as mandated by the No Child Left Behind Act of 2001. My study examines the perceptions of teachers entering into their first year of school restructuring due to failure to achieve AYP. Four research questions guided my inquiry: What are the perceptions of teachers regarding their school's failure to make Adequate Yearly Progress? What are the understandings of teachers regarding the restructuring process? What are the perceptions of teachers regarding the restructuring process? …

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 …

University And Community College Administrators’ Perceptions Of The Transfer Process For Underrepresented Students: Analysis Of Policy And Practice, Ruth C. Slotnick

USF Tampa Graduate Theses and Dissertations

This study describes and explains purposefully selected university and community college administrators' perceptions of the Florida statewide articulation agreement and the resulting institutional practices as they pertain to underrepresented transfer students. The theoretical framework that undergirds this dissertation is three-fold: social constructivism, philosophical hermeneutics, and interpretive policy analysis (Yanow, 2000). In particular, the local level knowledge consisting of six university and six community college administrators (also referred to as policy implementers), was assessed through face-to-face interviews, document analysis, and field notes. The researcher reflective journal (Janesick, 2004) is asserted as a crucial link to analyzing the three frames as way …

Passive Acoustic Studies Of Estuarine Fish Populations Of Southwest Florida, James Vincent Locascio

USF Tampa Graduate Theses and Dissertations

Recordings of fish sound production were made in Charlotte Harbor, Florida using Long Term Acoustic Recording Systems (LARS) programmed to record 10 seconds of sound every 10 minutes. Results demonstrated a strong circadian pattern in fish sound production that occurred within a few hours of dusk each evening. Sound production lasted on average 8.7 hrs each evening during the peak spawning season. LARS were deployed when Hurricane Charley crossed Charlotte Harbor in August, 2004. The hurricane did not inhibit nightly chorusing events of spawning fish. Rather, sound levels produced by spawning fish on the night of and 3 days after …

The Distribution And Population Dynamics Of The Golden Mouse (Ochrotomys Nuttalli) At Its Southern Range Periphery, Sarah A. Smiley

USF Tampa Graduate Theses and Dissertations

This research assesses the status of the golden mouse (Ochrotomys nuttalli) in Florida by taking a multi-pronged approach. Geographic Information Systems (GIS) was used to understand the distribution of habitats and occurrence records for this species within the state. Presence-absence trapping occurred at 13 study sites to determine if historic southern periphery populations were still occupied, gauge if more central populations were being maintained, and document golden mice in previously unrecorded areas. In addition, surveys for O. nuttalli took place at regular intervals at the USF Ecological Research Area to understand how populations of this species fluctuate over …

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 …

Principal Investigator And Department Administrator Perceptions Of Services Provided By Offices Of Research Administration At Research Universities, Kimberley W. Cole

USF Tampa Graduate Theses and Dissertations

The purpose of this research study was to determine what service attributes were perceived as important factors for a successful Office of Research Administration (ORA) to provide to principal investigators and department administrators. Initially established more than 50 years ago, The Office of Research Administration (ORA) has evolved into an integral component for the fiscal sustainability of many institutions of higher education. Existing performance metrics based on financial measures do not sufficiently capture the quality of the level of service demands placed on the ORA by the two internal user groups. The conceptual basis of the Balanced Scorecard modified for …

The Effect Of Color Congruency And Involvement On Non-Profit Organizational Messaging, Claire Selius

USF Tampa Graduate Theses and Dissertations

Color is a major factor in persuasive communication and messaging. This study examines the role of color and other variables in the communication of environmental causes. Many environmental organizations are starting to use color to generate awareness and create symbolic color associations. Based on the congruency theory and the elaboration likelihood model, this study tested specific research hypotheses pertaining to the effects of color-cause congruency and involvement with the cause on consumer reactions through a controlled experiment. Results reveal that involvement and the congruency between color and cause had an effect on attitude toward the organization and attitude toward the …

Livable Streets: Establishing Social Place Through A Walkable Intervention, Jeffrey T. Flositz

USF Tampa Graduate Theses and Dissertations

Some streets tend to lack a social sense of place. Since the invention of the automotive assembly line and post World War II development, street designs have shifted from centering around people and social situations to vehicular traffi c solutions. Streets are typically not thought of as social places, but rather as a means to effi ciently move automotive traffi c. The environment of these unlivable streets discourages social interaction. The majority of buildings are disconnected from the street with often nothing more than a parking lot.

A new model of streets is necessary, one that transforms streets into places …

Utilizing Contextualized Reading In Career And Technical Education To Enhance Reading Skills, Alan Duane Darr

USF Tampa Graduate Theses and Dissertations

The traditional education system in the United States developed a goal of sending a high number of students to post secondary schools. The expectation of going to college starts at elementary school and continues through high school and is pushed by the school district’s hierarchy. Schools annually publish numbers through the Department of Education at state and national levels of students moving to college. College progression has become such a priority that many students feel they have failed if not college bound.

Students not considered academic often move toward vocational education with the intent of post-secondary education to support a …

Refinement Of A Chemistry Attitude Measure For College Students, Xiaoying Xu

USF Tampa Graduate Theses and Dissertations

This work presents the evaluation and refinement of a chemistry attitude measure, Attitude toward the Subject of Chemistry Inventory (ASCI), for college students. The original 20-item and revised eight-item versions of ASCI (V1, V2, V3 and V3.1) were administered to different samples. The evaluation for ASCI had two main foci on the psychometric properties: reliability and validity. Both psychological theory and factor analysis techniques were applied to guide instrument refinement. Evidence for good reliability and validity was established for ASCI V2 score interpretation. The two-factor correlated structure was supported by confirmatory factor analysis. The two subscales, intellectual accessibility and emotional …

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 …

Workplace Nutrition And Exercise Climate: Scale Development And Preliminary Model, Joseph J. Mazzola

USF Tampa Graduate Theses and Dissertations

Obesity is a major concern in the United States and has a multitude of negative physical and mental health consequences. Proper nutrition and exercise are important elements to initiating and maintaining a healthy lifestyle. Since most people spend a large amount of their time working, it is important that organizations create an atmosphere that is conducive to employees being able to eat healthy diets and exercise regularly. The social and environmental climate in terms of health was examined through the construct of a Workplace Nutrition and Exercise Climate (WNEC), defined here as the situational, social, and environmental factors within an …

Serum Antibodies To Human Papillomavirus Type 6, 11, 16 And 18 And Their Role In The Natural History Of Hpv Infection In Men, Beibei Lu

USF Tampa Graduate Theses and Dissertations

Our understanding of humoral immune response to human papillomavirus (HPV) infection has been mainly derived from studies in women. Very little is known about humoral immune response to HPV in men. There is also a growing interest in understanding the burden of HPV exposure in the subgroups of the male population, including men who have sex with women (MSW), men who have sex with men (MSM) and men who have sex with both men and women (MSMW). This dissertation was undertaken to understand and characterize humoral immune response, measured by detectable serum antibody IgG, to HPV 6, 11, 16 and …

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 …

Magnetocaloric Effect In Thin Films And Heterostructures, Christopher Bauer

USF Tampa Graduate Theses and Dissertations

The goals of this work are the optimization of the magnetocaloric effect in Gadolinium thin film structures. We approach this issue from two directions, that of process optimization and of interface effects. Past results showed Gd₂O₃ in our Gadolinium thin films, and the presence of such oxide seemed to grow with the temperature at which the film was grown or annealed. Comparison of samples grown without chamber gettering to those that were gettered show differences in their structural and magnetic properties, and we conclude that gettering is an effective step in enhancing the quality of Gd thin …

Heat Stress Evaluation Of Protective Clothing Ensembles, Amanda Lee Pease

USF Tampa Graduate Theses and Dissertations

Clothing directly affects the level of heat stress exposure. Useful measures to express the thermal characteristics are WBGT (wet bulb globe temperature) clothing adjustment factor (CAF) or apparent total evaporative resistance (R_e,T,_a). The CAF is assigned through laboratory wear trials following a heat stress protocol in which the air temperature and humidity are progressively increased until the participant clearly loses the ability to maintain thermal equilibrium. The critical condition is the point of thermal transition and from these conditions both the CAF and Re,T,a are computed. The first objective of this study is to compare the …

An Exploratory Study Of The Intrapersonal, Socio-Cultural, And Behavioral Factors That Influence Hiv Risk Behaviors Among Ethnic Subgroups Of Black Heterosexual Men: The Intersection Of The Beliefs And Perceptions Of Black Women, Shalewa Noel-Thomas

USF Tampa Graduate Theses and Dissertations

Twenty five years after AIDS was first scientifically described, the disease continues to take its toll on the human population. HIV/AIDS disproportionately affects marginalized groups such as poor, underserved, minority populations. In the United States, Blacks become infected with and die from HIV/AIDS more than any other ethnic or racial group. Despite a vast body of literature on HIV/AIDS, little research has focused on black heterosexual men and even fewer studies have explored the context of risk among subgroups of black men.

Using qualitative research methods and a socio-ecological framework, this study explored the intrapersonal, socio-cultural, and behavioral factors that …

The Security And Foreign Policy Of The Islamic Republic Of Iran: An Offensive Realism Perspective, Bledar Prifti

USF Tampa Graduate Theses and Dissertations

This study argues that security and foreign policy of the Islamic Republic of Iran is mainly driven by the main principles of the Offensive Realism theory of international relations. While the Iranian political system is considered a theocratic system, based on the Islamic Shi'a ideology, its survival is defined as the ultimate ideology-an ideology that is paramount to any other ideology. Iran's security and foreign policy is determined and shaped by its need to survive in an anarchic international system. Iran's cooperation with "two Satans", Israel and the United States, during the Iran-Iraq war demonstrates that the ultimate ideology of …

Active Surveillance And Incidence Rate Of Dengue Infection In A Cohort Of High Risk Population In Maracay, Venezuela., Carlos Espino

USF Tampa Graduate Theses and Dissertations

In the absence of an effective vaccine, vector control and surveillance of dengue fever (DF) and dengue hemorrhagic fever (DHF) are the most important strategies currently used to reduce the impact of these diseases in affected population. The objectives of this study were to estimate the incidence of symptomatic and asymptomatic dengue cases, the prevalence of antidengue antibodies, and to evaluate the laboratory and clinical aspects related to an active surveillance of dengue cases. In this study, active surveillance was incorporated as a part of the study design. At total of 3,255 people from four high risk neighborhoods were followed …

The Effectiveness Of Prevent-Teach-Reinforce: Does The Presence Of Comorbid Internalizing Behavior Problems Moderate Outcomes For Children With Externalizing Behavior Problems?, Bonnie Saari

USF Tampa Graduate Theses and Dissertations

This study examined the effectiveness of a school-based intervention process known as Prevent-Teach-Reinforce for children with a combination of externalizing and internalizing behaviors compared to children with only externalizing behaviors. The dependent variables examined were social skills, problem behaviors, and academic engaged time. Data for the current study were taken from archival data collected by the Florida Mental Health Institute that included students in kindergarten through 8th grade. A series of repeated-measures analysis of variance (ANOVA) was used to identify differences in improvement on the dependent variables for the two groups of students.

Research questions focused on the main effects …

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 …

Filtration Performance Of A Niosh-Approved N95 Filtering Facepiece Respirator With Stapled Head Straps, Daniel E. Medina

USF Tampa Graduate Theses and Dissertations

Certain models of NIOSH-approved filtering facepiece air purifying respirators are manufactured with stapled head straps. Depending on the manufacturer, these head straps may be stapled to the filter media itself. This may cause leakage through the filter media of the respirator, potentially exposing the user to an unacceptable level of contaminant. In this study, monodisperse polystyrene latex (PSL) spheres were generated to challenge four replicates of a N95 single use respirator model made by the same manufacturer.

Nominal particle sizes of the PSL spheres used to challenge the respirators were 0.5, 1, and 2 micrometers in diameter. All respirators were …

A Program Evaluation Of A Literacy Initiative For Students With Moderate To Severe Disabilities, Carrie F. De La Cruz

USF Tampa Graduate Theses and Dissertations

Recently the National Reading Panel concluded that systematic and direct instruction in phonological awareness, phonics, fluency, vocabulary, and comprehension that is informed by ongoing assessments of student progress results in positive student achievement (NICHHD, 2002). For students with moderate to severe disabilities and students with autism, reading instruction has historically focused on functional sight words. Unfortunately, very little research exists that has examined how the literacy achievement of students with moderate to severe disabilities can be impacted by a more comprehensive, data-driven instructional model.

A special education program that serves students with moderate to severe disabilities and students with autism …