Digital Commons Network^™

Synthesis And Anti-Mrsa Activity Of Hydrophilic C3-Acylated N-Thiolated Β-Lactams And N-Acyl Ciprofloxacin-N-Thiolated Β-Lactam Hybrids, Biplob Bhattacharya

USF Tampa Graduate Theses and Dissertations

The Turos laboratory has been working with N-thiolated β-lactams for years trying to understand the mode of action and structural features it needs to have biological activity. Over the years new data has shown promising inhibitory activity against various microbes.

In this dissertation, a review of the vast amount of work carried out on N-thiolated β-lactams in Turos laboratory has been done and their novelty, in terms of structure and mechanism has been discussed. A complete outline of our work in the discovery and ongoing development of these compounds, starting from our initial, unexpected finding of antimicrobial activity for one …

Perceptions Of Hispanic Female Esl Students Toward First-Year College Writing Courses: A Phenomenological Examination Of Cultural Influences, Barbara B. Booker

USF Tampa Graduate Theses and Dissertations

The role of culture as a phenomenon guided this qualitative study, which examined the influence of diverse Hispanic cultures on the attitudes and perceptions towards college writing courses of female Hispanic students who are non-native speakers of English. With the increasing number of Hispanic immigrants coming to the U.S., the minority student population at our nation's colleges and universities has also risen. Community colleges have become the means through which many of these Hispanic immigrants obtain a college education.

The eight women who participated in this study self-identified as Hispanic. All were first generation college students who had been born …

Strategizing Relationships 2.0: An Analysis Of International Companies' Use Of Social Media, Jessica Marie Brightman

USF Tampa Graduate Theses and Dissertations

Because of technological advances and the blurring of boundaries, the world is becoming a global community. Global communications have made it essential for multinational corporations to develop and maintain a consistent worldwide identity and brand image. It is no longer possible to classify people into simple and stable segments of customers; the world is evolving and so is the population. The purpose of this research is to bridge the gap between the academic and professional world of international public relations by expanding the stream of literature and incorporating a global aspect. Within the last few years, social media has seen …

Aggregation Of Sediment And Bacteria With Mucilage From The Opuntia Ficus-Indica Cactus, Audrey Lynn Buttice

USF Tampa Graduate Theses and Dissertations

Flocculants are commonly used in industrial settings where solid-liquid separations are desired including industrial and municipal wastewater management and potable water production facilities. Conventional flocculants include inorganic metal salts and synthetic organic polymers. The cost, availability, and harmful effects of the non-biodegradable nature of these flocculants have led to the widespread study of natural flocculants. Current natural flocculants being studied include polysaccharides cultivated from microbial extracellular matrix products and plant based materials. In this study, the mucilage of Opuntia ficus-indica cactus was evaluated as a natural flocculant for sediments and bacteria. The O. ficus-indica cactus is also known as the …

Digital Holographic Measurement Of Nanometric Optical Excitation On Soft Matter By Optical Pressure And Photothermal Interactions, David C. Clark

USF Tampa Graduate Theses and Dissertations

In this dissertation we use digital holographic quantitative phase microscopy to observe and measure phase-only structures due to induced photothermal interactions and nanoscopic structures produced by photomechanical interactions. Our use of the angular spectrum method combined with off-axis digital holography allows for the successful hologram acquisition and processing necessary to view these phenomena with nanometric and, in many cases, subnanometric precision. We show through applications that this has significance in metrology of bulk fluid and interfacial properties.

Our accurate quantitative phase mapping of the optically induced thermal lens in media leads to improved measurement of the absorption coefficient over existing …

Modernization From Above: Social Mobilization, Political Institutionalization And Instability: A Case Study Of Iran (1953-1979), Jeffrey Robert Cobb

USF Tampa Graduate Theses and Dissertations

This case study is in an effort to demonstrate the disastrous effects of modernization via social mobilization and economic development when initiated from above and through foreign intrusion. Initially, this research will examine previous theoretical literature regarding the political phenomenon of modernization and social mobilization. My primary focus will center on the problems that occur when rapid modernization, based on an exogenous model, is forced onto a traditional society by elites and social mobilization outpaces political institutionalization. My case study will focus on the country of Iran, as the political and societal factors of interest seem to be highly illustrative …

Can You Believe She Did That?!:Breaking The Codes Of "Good" Mothering In 1970s Horror Films, Jessica Michelle Collard

USF Tampa Graduate Theses and Dissertations

The threats found in horror films change with time, each decade consisting of threats that were most frightening for the time period. Horror film scholars, such as Andrew Tudor, determined that in 1970s horror films the threat has migrated from external forces into the home and the family. Invading aliens and monsters were thrown replaced by psychosis and evil children. This notion of making the familiar unfamiliar and threatening is paralleled in concerns addressed during the second-wave of feminism; women were making the normative and familiar idea of mother unfamiliar as they migrated from the private and into the public …

The Effects Of Food Insecurity On Mental Wellbeing In Monteverde Costa Rica, Robert Eugene Cowherd

USF Tampa Graduate Theses and Dissertations

The rapid expansion of ecotourism in the Monteverde zone of Costa Rica has increased the incidence in food insecurity in the area. Changes in food preferences and availability have led to a more homogenized diet that is increasingly delocalized and reliant on processed foods. Additionally, there has been a rapid economic shift away from agricultural and dairy farming to an economy more reliant on tourism. This NSF supported study builds upon data from a longitudinal investigation (#BNS 0753017) examining the nutritional effects of this rapid economic transition. Using a mixed methods approach, a culturally appropriate scale of stress was developed …

The Relationship Between The Social Construction Of Race And The Black/White Test Score Gap In, Toriano M. Dempsey

USF Tampa Graduate Theses and Dissertations

ABSTRACT

This research is an investigation into the relationship between the resegregation of American

public schools and the social creation of race. This research is based on the popular notion that

American public schools are failing to produce students capable of competing in today's global society.

The proof most often used to assert the failure of American public schools is the Black/White Test Score

Gap. For the purposes of this research the Black/White Test Score Gap is defined as the gap between

the scores on academic standardized tests between Black public school students and White public school

students regardless of …

Tagline: Information Extraction For Semi-Structured Text Elements In Medical Progress Notes, Dezon K. Finch

USF Tampa Graduate Theses and Dissertations

Text analysis has become an important research activity in the Department of Veterans Affairs (VA). Statistical text mining and natural language processing have been shown to be very effective for extracting useful information from medical documents. However, neither of these techniques is effective at extracting the information stored in semi-structure text elements. A prototype system (TagLine) was developed as a method for extracting information from the semi-structured portions of text using machine learning. Features for the learning machine were suggested by prior work, as well as by examining the text, and selecting those attributes that help distinguish the various classes …

"People...Do Not Come With Standardized Circumstances": Toward A Model For An Anthropology Of E-Government, Marc K. Hebert

USF Tampa Graduate Theses and Dissertations

Many Americans appreciate the availability and ease of using government websites to conduct their business with the state. What then of the most vulnerable in society? How do they access and use a standardized application process for government assistance, considering their potential resource, educational and physical constraints? Many go to public libraries and non-governmental organizations (NGOs), which shifts the responsibility to help applicants from the government agency administering the program to local actors whose primary duties lie elsewhere.

The aim of this research is to document the experiences of three groups of people, primarily located in a central Florida, urban …

Comparative Outcomes Assessment Of The C-Leg And X2 Knee Prosthesis, Michael Jason Highsmith

USF Tampa Graduate Theses and Dissertations

Background

There are more than 300,000 persons in the U.S. living with transfemoral amputation (TFA). Persons with TFA use a knee prosthesis for gait and mobility. Presently, the C-Leg microprocessor knee prosthesis is the standard of care. C-Leg has significantly improved safety and cost efficacy and has created modest gains in gait efficiency. Recently, a new prosthesis has introduced a new sensor array and processor that reportedly improves knee motion, stair function and standing stability. Early claims of the reported functional benefits of the new Genium knee (formerly X2) have not been validated in a rigorous clinical trial. Therefore, the …

Selling Masculinity And Profiting From Marginality: Sex Work And Tourism In A Jamaican Resort Town, Lauren C. Johnson

USF Tampa Graduate Theses and Dissertations

This ethnography explores the practice of sex tourism in Negril, Jamaica, and its sociocultural, economic, and health impacts on the popular tourist destination. Transactional sex with female tourists has become a popular income generator for some young Caribbean males who are excluded from formal employment in the region's leading industry. Like other resort locales, Negril draws both men and women from various parts of the country who choose to engage in sex work in order to benefit from the tourist dollars spent in Jamaica's third most popular resort area. Through the analysis of observations, interviews with residents, tourists, government officials, …

Development And Optimization Of Kinetic Target-Guided Synthesis Approaches Targeting Protein-Protein Interactions Of The Bcl-2 Family, Sameer Shamrao Kulkarni

USF Tampa Graduate Theses and Dissertations

Kinetic target-guided synthesis (TGS) and in situ click chemistry are among unconventional discovery strategies having the potential to streamline the development of protein-protein interaction modulators (PPIMs). In kinetic TGS and in situ click chemistry, the target is directly involved in the assembly of its own potent, bidentate ligand from a pool of reactive fragments. Herein, we report the use and validation of kinetic TGS based on the sulfo-click reaction between thio acids and sulfonyl azides as a screening and synthesis platform for the identification of high-quality PPIMs. Starting from a randomly designed library consisting of nine thio acids and nine …

Precarious Manhood And Men's Attributional Biases In Partner Conflict, Joshua Guy Lenes

USF Tampa Graduate Theses and Dissertations

A study investigated men and women's attributions of criticism, rejection, and threats to gender status in a fictitious partner conflict scenario in which the victim was either a man or a woman. The results indicated that in the context of a partner conflict scenario that ends in violence, greater perceived threats to gender status are attributed to a female victim who criticizes a man's manhood more than a male victim who criticizes a woman's womanhood. The results also revealed that women attribute greater amounts of criticism/rejection and gender status threat in a victim's statements toward an abuser than men do, …

Precipitation Of Phosphate Minerals From Effluent Of Anaerobically Digested Swine Manure, Alex Y. Lin

USF Tampa Graduate Theses and Dissertations

Swine production represents approximately 40% of the world's meat production, and its wastes contain high concentrations of organic carbon, nitrogen (N), and phosphorus (P). Anaerobic digestion is an increasingly popular technology for treating animal wastes while simultaneously generating energy. Its propagation and ability to solubilize organic N and P make adding a struvite recovery process attractive. Recovering struvite (MgNH4PO4) from anaerobically digested swine waste can address global P shortages, meet P discharge guidelines, and produce slow-release fertilizer, which can be sold for revenue.

Anaerobic digesters were operated with at organic loading rates of 3.4-3.9 g volatile solids per liter per …

Schooling, Community, And Identity: The Perspectives Of Muslim Girls Attending An Islamic School In Florida, Vanessa Martinez

USF Tampa Graduate Theses and Dissertations

As the number of Islamic institutions increases in America, the need for greater understanding of the Muslim community, and the challenges faced by this minority, increases as well. This project seeks to provide such knowledge by exploring one of these rapidly growing institutions founded and funded by Muslims, private Islamic schools. Absent from media and literature is an understanding of Islamic schools and the experiences of youth as their attendees. This project addresses this gap through an ethnographic focus on female students at one Islamic school. Data was collected via interviews, focus groups, observation, and participant observation. This student-centered approach …

Wrecking Recreation Center Relationships: How Policy Affects Urban Youth In Tampa, Florida, Brett A. Mervis

USF Tampa Graduate Theses and Dissertations

This dissertation explores the impact of housing and recreation policy on Tampa's urban youth. Deconcentration policy suggests that public housing youth have improved life chances when relocated to mixed-income neighborhoods. In 2007, Tampa's Central Park Village (CPV) public housing complex was demolished and all families were relocated to new neighborhoods. Similarly, neoliberal policy advocates for the government's reduced role in poverty-alleviating mechanisms to include housing the poor and the funding of afterschool programs. To offset a smaller city budget due to state property tax rollbacks in the mid-2000's, Tampa Parks and Recreation instituted increased afterschool and youth sports participation fees. …

Parental Leave: Policy And Practice, Amanda Parr

USF Tampa Graduate Theses and Dissertations

Parental leave is a broad term that encompasses maternity and/or paternity leave to care for an infant. Parental leave provides job protection for workers and may be paid or unpaid, with provisions varying throughout the world. Every industrialized nation offers some form of paid parental leave, with the exception of the United States, whose only federal policy regarding parental leave is the Family and Medical Leave Act (FMLA), a law that allows eligible workers to take up to twelve weeks of unpaid, job protected leave for the birth or adoption of a child.

This research project explored how parents understand …

Graphene Casimir Interactions And Some Possible Applications, Anh Duc Phan

USF Tampa Graduate Theses and Dissertations

Scientific development requires profound understandings of micromechanical and nanomechanical systems (MEMS/NEMS) due to their applications not only in the technological world, but also for scientific understanding. At the micro- or nano-scale, when two objects are brought close together, the existence of stiction or adhesion is inevitable and plays an important role in the behavior operation of these systems. Such effects are due to surface dispersion forces, such as the van der Waals or Casimir interactions. The scientific understanding of these forces is particularly important for low-dimensional materials. In addition, the discovery of materials, such as graphitic systems has provided opportunities …

Socioscientific Issues: A Path Towards Advanced Scientificliteracy And Improved Conceptual Understanding Of Socially Controversial Scientific Theories, Dean William Pinzino

USF Tampa Graduate Theses and Dissertations

Abstract

This thesis investigates the use of socioscientific issues (SSI) in the high school science classroom as an introduction to argumentation and socioscientific reasoning, with the goal of improving students' scientific literacy (SL). Current research is reviewed that supports the likelihood of students developing a greater conceptual understanding of scientific theories as well as a deeper understanding of the nature of science (NOS), through participation in informal and formal forms of argumentation in the context of SSI. Significant gains in such understanding may improve a student's ability to recognize the rigor, legitimacy, and veracity of scientific claims and better discern …

Responses To Chemical Exposure By Foraminifera: Distinguishing Dormancy From Mortality, Benjamin James Ross

USF Tampa Graduate Theses and Dissertations

The Deepwater Horizon blowout in 2010 released an estimated 4.9 million barrels of crude oil into the Gulf of Mexico in the 83 days between the initial explosion and the capping of the well. Response included extensive use of Corexit© oil dispersant. Although South Florida was spared exposure by currents, this event highlights the need for effective bioassay organisms for coral reefs. Amphistegina spp. are benthic foraminifers that host diatom symbionts in a relationship similar to that of coral and their zooxanthellae. Amphistegina spp. occur abundantly in reef communities nearly worldwide, are easily collected and maintained in culture, and are …

The Rhetoric Of Evidence In Recent Documentary Film And Video, Steven W. Schoen

USF Tampa Graduate Theses and Dissertations

Documentary is a genre of film that portrays "real" events using depictions that connote the objectivity and facticity implied by the processes of photorealism. Many contemporary documentary theorists and critics observe a constitutive problem in this ethos: despite the apparent constructions and agendas of documentary filmmaking, the framing and assumption of documentary as a window on the world tend to naturalize its own constructions as "real." Critics who engage documentary trace the multitude of ways this problem plays out in particular films. These projects yield many important insights, but they most often approach documentary as a form of inherently deficient …

Cyberwar And International Law: An English School Perspective, Anthony F. Sinopoli

USF Tampa Graduate Theses and Dissertations

Cyberwar challenges future endeavors of state security. As technological capability has improved, and access to information has become more widespread the importance of the issue in today's ever-globalizing world grows each day. A primary objective is to evaluate the place of cyber-warfare against nation-states and any repercussions under an international law paradigm. Utilizing an English School perspective, emphasis will be applied to the argument that disruptive circumstances could come to fruition if international conventions are not created to bring consensus and order among nation-states on this subject. This study hypothesizes that a future application could be an agreement under international …

Improvisational Music Performance: On-Stage Communication Of Power Relationships, David A. Steinweg

USF Tampa Graduate Theses and Dissertations

This project explores how musical improvisational processes come into being through interacting discursive power relationships that are embodied and enacted through performance. By utilizing the concepts of framing and performativity I am able to show how discursive power constitutes the performance of improvisational music. To exemplify this theory, the project presents a case study examining a Grateful Dead cover band named Uncle John's Band that performs at Skipper's Smokehouse in Tampa, FL. Using an ethnographic methodology, the project articulates the dominant discursive power relationships that constitute Uncle John's Band's improvisational performances. The dominant discursive power relationships revolve around the lived …

Changes In Attitudes And Behaviors Toward Physical Activity, Nutrition, And Social Support For Middle School Students Using The Afit App As A Suppliment To Instruction In A Physical Education Class, Thomas Andrew Watterson

USF Tampa Graduate Theses and Dissertations

ABSTRACT

Finding ways to improve nutritional and physical activity components with today's adolescents is a significant problem. The obesity epidemic is over 10 years old and little research has been done on successful interventions that motivate today's students using the latest technology. A total of 140 middle school students and four physical education teachers participated in a 4-week study using a newly created application (AFIT app) for supplemental teaching in and out of the classroom. Combining a theoretical framework of Self-Determination and motivating strategies implored in today's mobile technology, significance was found using the PACE (2001) instrument in fruits and …

The Homegrown Jihad: A Comparative Study Of Youth Radicalization In The United States And Europe, William Wolfberg

USF Tampa Graduate Theses and Dissertations

Western nations continue to face potential attacks from violent extremist organizations waging a campaign of violence in the name of political Islam. Though these attacks are traditionally labeled as originating from abroad, leaders of these extremist organizations are utilizing a new tactic of radicalizing native or naturalized citizens from within Western countries in an effort to bypass the massive defensive security apparatus Western governments have put in place since the September 11 attacks.

These undistinguishable citizens turned radical jihadists, better known as homegrown terrorists, represent a clear and present danger to the security of the United States. In an effort …

Gender Differences In Subtypes Of Workplace Aggression, Zhiqing Zhou

USF Tampa Graduate Theses and Dissertations

The purpose of the current study was to categorize workplace aggression into nine subtypes based on human aggression and workplace aggression literature, and to examine gender differences in engaging in these subtypes of workplace aggression. Data collected from 366 employed students showed that a significant gender difference was found only in direct workplace aggression and there were no gender differences in the other eight workplace aggression subtypes; verbal, direct, and passive workplace aggression was more frequently used than physical, indirect and active workplace aggression, respectively. Data collected from 83 employee-supervisor pairs showed that compared to supervisors' reports, female employees' self-reports …

"Are We Supposed To Be The Guy On The Horse?" A Case Study On The Use Of Political Cartoons In The American History Classroom, James Manuel Duran

USF Tampa Graduate Theses and Dissertations

Recent reports on the media saturation experienced by the twenty-first century student have brought about an increased interest in focusing attention on the issue of visual literacy in today's schools. Concepts such as instructional personalization, where approaches to curriculum design and instruction are created to concentrate on the individual strengths of the learner, have been promoted by some as a path to improving overall student performance. Many believe that the content of the Social Studies classroom easily lends itself to a visually stimulating approach and as such is an ideal laboratory to test hypotheses on such an approach. This study …

A Novel Device And Nanoparticle-Based Approach For Improving Diagnosis And Treatment Of Pelvic Inflammatory Disease, Natasha Faith Cover

USF Tampa Graduate Theses and Dissertations

Pelvic Inflammatory Disease (PID) is one of the most common causes of morbidity in women. PID is a polymicrobial infection of the female reproductive tract, and is associated with pelvic pain, abnormal uterine bleeding, and tubal damage that can lead to ectopic pregnancies and infertility. It is curable but the effects of PID can be permanent if not properly diagnosed and treated. PID presents as a spectrum of disease and is often missed at early stages; even acute PID can be difficult to diagnose, as there is no single conclusive diagnostic test. Currently, PID is identified and treated syndromically because …