Digital Commons Network^™

Methods And Algorithms To Enhance The Security, Increase The Throughput, And Decrease The Synchronization Delay In 5g Networks, Asim Mazin

USF Tampa Graduate Theses and Dissertations

This dissertation presents several novel approaches to enhance security, and increase the throughput, and decrease the delay synchronization in 5G networks.

First, a new physical layer paradigm was proposed for secure key exchange between the legitimate communication parties in the presence of a passive eavesdropper was presented. The proposed method ensures secrecy via pre-equalization and guarantees reliable communications using Low-Density Parity Check (LDPC) codes. One of the main findings of this research is to demonstrate through simulations that the diversity order of the eavesdropper will be zero unless the main and eavesdropping channels are almost correlated, while the probability of …

Are Transfer Pricing Disclosures Related To Tax Reporting Transparency? The Impact Of Auditor-Provided Transfer Pricing Services, Stephanie Y. Walton

USF Tampa Graduate Theses and Dissertations

In this study I investigate whether managers’ voluntary disclosure of transfer pricing information in the 10-K is related to firms’ tax reporting transparency. Transfer pricing disclosures could be used to convey managers’ private information about risks and uncertainties underlying firms’ transfer pricing activities or alternatively be used to discount or disclaim these risks. Using several common proxies for tax reporting transparency, I find evidence that transfer pricing disclosures are generally associated with lower tax transparency, suggesting that these disclosures may be primarily opportunistic. However, when firms use their auditor for transfer pricing services, I find that these transfer pricing disclosures …

Women’S Orgasm Gap As A Function Of Precarious Manhood, Jessica A. Jordan

USF Tampa Graduate Theses and Dissertations

The disparity in frequency of orgasms between men and heterosexual women has been linked qualitatively to women purposefully not communicating their sexual needs in order to preserve their partner’s masculinity. In two studies I experimentally evaluated this relationship, sampling heterosexual undergraduate women. In study 1 (N = 246) I demonstrated that women who imagined not having an orgasm rated an imaginary partner as more insecure in his manhood, relative to women who imagined having an orgasm or going on a dinner date. These perceptions of insecurity mediated the relationship between not having an orgasm and reporting anxiety about hurting their …

Language Of Carnival: How Language And The Carnivalesque Challenge Hegemony, Yulia O. Nekrashevich

USF Tampa Graduate Theses and Dissertations

Does the phenomenon of carnivalesque challenge hegemony and inspire social change? Mikhail Bakhtin coined the term “carnivalesque” to describe the concept of Carnival. During Carnival, social norms were overturned and ignored in favor of a chaotic atmosphere, briefly breaking down the boundaries between class, gender, and other hegemonic perspectives. Modern Carnivals, such as the Rio Carnival, still contain a semblance of the carnivalesque, as well as other holidays that celebrate the grotesque and macabre, like that of the Day of the Dead. The LGBT Pride Parade can also be seen as a modern Carnival, for it focuses heavily on sexual …

Making Sense At The Margins: Describing Narratives On Food Insecurity Through Hip-Hop, Lemuel Scott

USF Tampa Graduate Theses and Dissertations

Neoliberalism is the contemporary political and economic thought that promotes ideas of private property, individualism, and market logic as key to advancing humanity. Scholars generally link neoliberalism to poverty from a broad perspective, but few have explored how it specifically impacts food insecurity. Globally, many people impacted by poverty also experience food insecurity. Hip-hop is important to resistance and fostering my critical worldview. Existing literature primarily describes hip-hop as a critical tool giving expression to people living at the margins. However, there is a need for hip-hop to be used more often as resistance by artists doing research. First, this …

Translational Evaluation Of History Effects On Resurgence, Paige L. Talhelm

USF Tampa Graduate Theses and Dissertations

Resurgence is the reappearance of an extinguished operant response when an alternative behavior is subsequently treated with extinction (Podlesnik & Shahan, 2009). A potential solution to this problem is training serial alternative responses. During the present study, undergraduate students were trained to engage in an arbitrary response analogous to problem behavior and two alternative responses. Each response was reinforced for a distinct duration to establish different reinforcement histories and then tested under conditions of resurgence. The purpose of the present study was to evaluate the effects of duration of reinforcement on behavior subsequently exposed to resurgence contingencies. Three subjects engaged …

Diversity And Network Coded 5g Wireless Network Infrastructure For Ultra-Reliable Communications, Nabeel Ibrahim Sulieman

USF Tampa Graduate Theses and Dissertations

This dissertation is directed towards improving the performance of 5G Wireless Fronthaul Networks and Wireless Sensor Networks, as measured by reliability, fault recovery time, energy consumption, efficiency, and security of transmissions, beyond what is achievable with conventional error control technology. To achieve these ambitious goals, the research is focused on novel applications of networking techniques, such as Diversity Coding, where a feedforward network design uses forward error control across spatially diverse paths to enable reliable wireless networking with minimal delay, in a wide variety of application scenarios. These applications include Cloud-Radio Access Networks (C-RANs), which is an emerging 5G wireless …

A Historical Approach To Understanding Explanatory Proofs Based On Mathematical Practices, Erika Oshiro

USF Tampa Graduate Theses and Dissertations

My dissertation focuses on mathematical explanation found in proofs looked at from a historical point of view, while stressing the importance of mathematical practices. Current philosophical theories on explanatory proofs emphasize the structure and content of proofs without any regard to external factors that influence a proof’s explanatory power. As a result, the major philosophical views have been shown to be inadequate in capturing general aspects of explanation. I argue that, in addition to form and content, a proof’s explanatory power depends on its targeted audience. History is useful here, because from it, we are able to follow the transition …

A Family Histories Study Of Parents Engaging Issues Of Race And Racism, Omar J. Salaam

USF Tampa Graduate Theses and Dissertations

This family histories research study uses life history methods to explore narratives of parents’ lives regarding ways in which they socialize their children and engage school staff around issues of race and racism. The information gathered is from interviews with the two primary participants, two focus groups; one with each primary participant and the adults with whom they are raising their elementary school (Pre-K to Grade-5) children, and follow-up interviews with both primary participants. The first finding in this study is that the family life stories in both families play a direct role in socializing their children, in that the …

Detecting Rtl Trojans Using Artificial Immune Systems And High Level Behavior Classification, Farhath Zareen

USF Tampa Graduate Theses and Dissertations

Security assurance in a computer system can be viewed as distinguishing between self and non-self. Artificial Immune Systems (AIS) are a class of machine learning (ML) techniques inspired by the behavior of innate biological immune systems, which have evolved to accurately classify self-behavior from non-self-behavior. This work aims to leverage AIS-based ML techniques for identifying certain behavioral traits in high level hardware descriptions, including unsafe or undesirable behaviors, whether such behavior exists due to human error during development or due to intentional, malicious circuit modifications, known as hardware Trojans, without the need fora golden reference model. We explore the use …

Soviet Nationality Policy: Impact On Ethnic Conflict In Abkhazia And South Ossetia, Nevzat Torun

USF Tampa Graduate Theses and Dissertations

This study aims to answer two interlinked questions with respect to ethnic conflict in Georgia: Why and how two ethnic groups (Abkhazians and Ossetians) in Georgia sought secession in 1990s rather than accepting unity under a common Georgian roof, and what explains the occurrence of ethnic conflicts between the Abkhazians and Georgians and between the South Ossetians and Georgians?

The central argument of this thesis is that Soviet nationality policy was a foremost driving force in shaping consciousness of being ethnic groups in Georgia and set the stage for the inter-ethnic conflicts of the post-Soviet era. A number of factors …

Online Mmorpg Games In China: Player Motivations And The Mediating Role Of Flow, Jiaxin Liu

USF Tampa Graduate Theses and Dissertations

Massively Multiplayer Online Role-Playing Games (MMORPGs) are gaining popularity and are being used widely in China. The aim of this study is to explore the relationship between the motivation and the experience of MMORPG players, and the effects of playing MMORPG through an extensive online survey of more than 300 Chinese participants (n = 305). Specifically, the findings support the complex relationship between variables, including the direct effects on motivation and flow, on the time the players invest in MMORPG games, and the mediated effects on motivations through flow. In addition to the importance of direct and indirect effects on …

Why Does Coaching Work? An Examination Of Inputs And Process Variables In An Employee Coaching Program, Sarah E. Frick

USF Tampa Graduate Theses and Dissertations

The efficacy of leadership coaching to improve leader and organizational outcomes cannot be overstated. However, a thorough understanding of some of the inputs and process variables involved in coaching has not been empirically established to date. To address this issue in the leader development and coaching literature, I examined the characteristics of the coaches and the coachees and their relationships with two relational variables potentially involved in coaching relationships (i.e., leader-member exchange and trust). The importance of leadership to work outcomes and leader development is highlighted, followed by a discussion of the specific leader development technique of coaching. The discussion …

An Emergent Theory Of Executive Leadership Selection: Leveraging Grounded Theory To Study The U.S. Military's Special Forces Assessment And Selection Process, Darryl J. Lavender

USF Tampa Graduate Theses and Dissertations

This research documents the assessment and selection process used by the U.S. Military’s Special Forces for over 70 years using Grounded Theory Methodology. Three independent studies were used to document the Special Forces process of selection. Through comparative reanalysis of each study’s data a model emerged explaining the Special Forces phenomena of assessment and selection.

Analysis was conducted in three phases using open, axial, and selective coding which allowed for the identification of a smaller set of themes which categorized the process of selection. The final step involved the development of two analytical matrices explaining the central theme of selection …

Online And Self-Directed Learningreadiness Among Hospitality And Tourism College Students And Industry Professionals, Muhittin Cavusoglu

USF Tampa Graduate Theses and Dissertations

The purpose of this quantitative study was to compare self-directed learning readiness and online learning readiness between hospitality and tourism college students and industry professionals. The Self-Directed Learning Readiness Scale (SDLRS) was used for measuring self-directed learning readiness. After examining the reliability and validity indices of the modified Online Learning Readiness Scale (OLRS), it was used in the context of hospitality and tourism for the measurement of online learning and training readiness. Two different study populations, hospitality and tourism college students and hospitality and tourism industry professionals, were identified for the purpose of this study. Data were obtained via online …

Essays In Applied Microeconomics, Lijuan Feng

USF Tampa Graduate Theses and Dissertations

Chapter 1 studies the effect of body weight on labor market outcomes. Using longitudinal data from the China Health and Nutrition Survey (CHNS) from 1989 to 2011, and both instrumental variable and fixed effects estimation to control for the endogeneity of body weight, I examine the wage effect of BMI by gender, type of residence area, and occupation. Results from linear OLS regression show a positive relationship between body weight and income for males in both rural and urban areas and females in rural areas, while a negative one for females in urban areas. After controlling for the unobserved individual …

A Culture/Climate Examination Of Autonomous Vehicle Technology In The United States, James J. Mennie

USF Tampa Graduate Theses and Dissertations

Autonomous Vehicle are coming. But mass adoption is at least ten years away according to consensus compiled from interviews conducted with industry thought lenders. Questions remain as to what technology those vehicles will contain as there is no universal platform for autonomous vehicle technology, since manufacturers, hardware and software companies are developing their own proprietary products. A/V technology is expected to improve productivity, and provide a plethora of societal benefits, but while we await the closure of the time gap the US will lose almost 40,000 citizens each year with traffic fatalities.

Connected vehicle technology, which is currently completing pilot …

The Role Of The Soldier In Civilian Life: Personal And Social Concerns That Influence Reintegration Processes, Matthew J. Ahlfs

USF Tampa Graduate Theses and Dissertations

The intent and direction of this thesis is to recognize personal and social concerns that influence soldiers’ reintegration process. The missing element in current literature is capturing the soldiers’ lived experiences, ideas, perspective and knowledge of what it truly means to be a soldier and having to reintegrate back into the civilian life after being submerged the military culture for an extended period of time. One of the vital concerns to the soldiers is how civilians, specifically the community, politicians, scholars and mental health providers, are not necessary fully aware nor do they recognize the influential impacts of the experiences …

High Expectations And Teacher Implicit Biases In A Culture Of Care, Jacqueline K. Haynes

USF Tampa Graduate Theses and Dissertations

This graduate project was part of a group project completed by five school and district administrators in Hillsborough County, Florida. The project began because of our passion for teachers who are able to establish a culture of care in their classrooms that support students academically but transform their learning through experiences that enable them to be more highly engaged and productive students, regardless of ethnicity, socioeconomic status, perceived academic abilities, and backgrounds.

My project component looked at research on teacher expectations and their effects on student success. Why does the color of a child's skin tone trigger lower expectations by …

Exploring Young Children’S Digital Composing Practices, Megan D. Cross

USF Tampa Graduate Theses and Dissertations

This study explored the many layers involved in young children’s meaning-making as they digitally compose. Utilizing a multimodal, social semiotics theoretical framework to analyze children’s digital compositions using a composing app, this study was designed around one research question: What is the nature of three and four-year-old children’s multimodal meaning making while using a composing app? The qualitative study involved four focal participants from a three- and four-year-old classroom, who attended an inquiry-based lab school in the southeastern United States.

The data were collected over a period of eight weeks, where the children were invited to tell their stories using …

Toward Improving Export Diversification And Economic Growth In Small Island Developing States, Marlo B. Murphy-Braynen

USF Tampa Graduate Theses and Dissertations

This dissertation seeks to address the following research question: How does export diversification impact economic growth in Small Island Developing States? More specifically, this dissertation sheds light on the strength and nature of the relationship between export diversification and economic growth with a focus on Small Island Developing States (SIDS). Informed by prior literature and the empirical analysis in this dissertation, I propose a conceptual industry development model that aims to stimulate and promote export development, diversification, and growth within the context of Small Island Developing States in general and with a specific focus on The Bahamas. In accordance with …

Dormancy In The Amphistegina Gibbosa Holobiont: Ecological And Evolutionary Implications For The Foraminifera, Benjamin J. Ross

USF Tampa Graduate Theses and Dissertations

Dormancy, a state of severely decreased or suspended metabolism, is a widespread survival strategy in nature. In the Foraminifera, one of the most studied groups of marine organisms, its presence had been suggested by circumstantial evidence, but rarely studied directly until recently. Despite the lack of research, stressor-induced dormancy can significantly alter the way in which foraminiferal ecology is understood, especially in marginal environments. In this dissertation, I reviewed the evidence for dormancy in the foraminiferal literature, concluding that evidence for dormancy is widespread across the Phylum. I then explored the role of dormancy in the survival of the diatom-bearing …

Improving Strategic It Investment Decisions By Reducing Information Asymmetry, Thomas P. Stablein

USF Tampa Graduate Theses and Dissertations

The unprecedented ubiquity with which technological advancements, such as blockchain, the Internet of things (IoT), big data, machine learning, and artificial intelligence (AI), are impacting the world has forced large organizations to rethink their information technology roadmaps. Their decisions about how they invest in technology have become more important. It is against this backdrop that companies must decide how much to invest in their aging technologies versus these new potentially transformational ones. A decision is only as good as the information available to the decision-makers when they make it. This research project seeks to understand the effects that information asymmetry …

Organizational Innovations That Stick: Best Practices In Sustainable Organizational Change, Abdoulie Jammeh

USF Tampa Graduate Theses and Dissertations

Organizational change is an essential ingredient of organizational growth/life and can be difficult to accomplish. Many researchers and practitioners have studied the challenges and opportunities surrounding effectuating change and innovation in organizations. However, there has been little practical analysis of the theoretical relationships among the key apparatuses that make change stick, institutionalizing innovation in big bureaucratic organizations. In order to develop practical insights that can inform best practices, this paper aims to provide a collection of successful organizational innovation examples based on responses to a critical incident analysis survey of 12 participants from a 2018 World Bank – USC Annenberg …

Duty-Cycle Based Physical Unclonable Functions (Pufs) For Hardware Security Applications, Mahmood Javed Azhar

USF Tampa Graduate Theses and Dissertations

Duty cycle and frequency are important characteristics of periodic signals that are exploited to develop a variety of application circuits in IC design. Controlling the duty cycle and frequency provides a method to develop adaptable circuits for a variety of applications. These applications range from stable on-chip clock generation circuits, on-chip voltage regulation circuits, and Physical unclonable functions for hardware security applications. Ring oscillator circuits that are developed with CMOS inverter circuits provide a simple, versatile flexible method to generated periodic signals on an IC chip. A digitally controlled ring oscillator circuit can be adapted to control its duty cycle …

Price Transparency In The United States Healthcare System, Gurlivleen (Minnie) Ahuja

USF Tampa Graduate Theses and Dissertations

The study explores price transparency in the healthcare system. With the increase in healthcare spending resulting in the advent of high deductible plans, consumers have been exposed to high healthcare cost. Despite being burdened with outrageous and extravagant bills, studies have shown that the consumers are not using price transparency tools to their benefit.

The literature review reveals that the major stakeholders in the healthcare industry have never been studied together to understand the research question on ‘Why is there lack of price transparency in the healthcare system?’ moreover, there is no theory to explains this phenomenon.

This study undertakes …

Fatty Acid Amides And Their Biosynthetic Enzymes Found In Insect Model Systems, Ryan L. Anderson

USF Tampa Graduate Theses and Dissertations

A fatty acid amide is precisely as the name suggests: A fatty acid (CHn-COOH), in which the hydroxyl group of the carboxylic acid is displaced by an amine functional group from a biogenic amine (R-NH2), ultimately forming an amide bond. Furthermore, these fatty acid amides can be composed of a variety of different acyl chain lengths donated by the fatty acid and a myriad of different biogenic amines. Thus, these molecules can be subdivided in a number of different ways including the separation of short chain (acetyl to heptanoyl) and long chain (palmitoyl to arachidonoyl) and also based off the …

Teacher Attitude And Self-Efficacy Differences Regarding English Language Learners And Disabled Learners., Miriam Carballo

USF Tampa Graduate Theses and Dissertations

There has been little research combining both groups of students who were English Language Learners (ELLs) and Exceptional Student Education (ESE) students in relation to teacher attitudes and self-efficacy. The purpose of this study was to compare teacher attitudes and self-efficacy related to instructing either ELLs with or without disabilities in elementary schools

Teachers from six elementary schools in the XYZ Excellence School District participated in a 52-item comprehensive survey. Two questionnaires and the demographic form were combined to create one comprehensive questionnaire totaling 52 questions for the purposes of this study. Teachers were solicited to participate in the study …

Pursuing Resilience Of Coastal Communities Through Sustainable And Integrated Urban Water Management, Pacia Díaz

USF Tampa Graduate Theses and Dissertations

Reliability of water supply in the urban setting has become essential for communities to function and thrive. It is needed for more than mere human consumption and well-being. Although modern cities have water treatment and distribution systems, pressures from urbanization, population growth and the anticipated pressures of climate change are affecting the quality of water supply and the reliability of treatment and distribution systems. There is therefore an urgent need to take appropriate measures to improve the resilience of water supply systems before the impacts are irreversible.

Improving the resilience of water supply systems can be a challenge. In the …

The Impact Of Digital Marketing Decisions On Market Outcomes In Residential Real Estate, Denise Hunter Gravatt

USF Tampa Graduate Theses and Dissertations

In the competitive and fast-paced industry of residential real estate, digital marketing strategies must effectively meet the information needs and demands of the industry’s three key stakeholders: buyers, sellers, and agents. Digital house hunting is the predominant search strategy for prospective homebuyers who scour the Internet looking for homes to purchase. Property sellers and real estate professionals, whose shared end-goal is to transact a successful sale, must discern which digital marketing choices are optimal for marketing for-sale properties online in the digital channels where buyers are searching.

A 2008 settlement agreement between the Department of Justice and the National Association …