Digital Commons Network^™

Play Behaviors In Latino Dual Language Learners: The Relationship Between Maternal Characteristics And Classroom Peer Play, Olivia Hernandez Gonzalez

USF Tampa Graduate Theses and Dissertations

In Head Start, 28.8% of the children enrolled are Dual Language Learners (DLLs), and 84.4% of those speak Spanish as their home language. However, there are limited studies involving DLLs. Using the Ecological Model of Human Development framework with current revisions with culture as part of the microsystem (Bronfenbrenner, 1994; Vélez-Agosto et al., 2017), the current study aimed to identify maternal level factors that may relate to Latinos' classroom peer play while controlling for classroom quality. Forty-five Latino DLL children attending Head Start, their mothers, and their teachers participated in the study. Head Start administrators provided their most recent vocabulary …

Rethinking Map Literacy And An Analysis Of Quantitative Map Literacy, Ming Xie

USF Tampa Graduate Theses and Dissertations

Maps are increasingly being used in traditional and virtual media, and civic discourse on political, social, and environmental issues, among others, is more and more becoming influenced by them. The often-used expression of a “picture tells a 1000 words” has never been so apt in our progressively more visual world. Despite this increased role and importance of maps, map literacy, as a field of research, remains rather underdeveloped. This is especially so for thematic maps, the very type of map that is finding increasing currency in discourse. As part of this under-developed nature of map literacy, the quantitative skills used …

On Distributed Control Of Multiagent Systems Under Adverse Conditions, Emre Yildirim

USF Tampa Graduate Theses and Dissertations

The objective of this thesis is (1) to show the experimental validation of recently proposed distributed adaptive control architecture for a class of heterogeneous uncertain multiagent systems as well as (2) to theoretically propose a proportional integral controller for multiagent systems having limited resources in the presence of a disturbance with stability analyses.

With regard to (1), the distributed adaptive control architecture used in the experiment utilizes a control input having a nominal part and an adaptive augmentation part for each agent to suppress the effect of uncertainties and disturbances effectively. This architecture is capable to provide uniform ultimate boundedness …

Three Theorists On Religious Violence In An Islamic Context: Karen Armstrong, Mark Juergensmeyer, And William T. Cavanaugh, Ayse Camur

USF Tampa Graduate Theses and Dissertations

Religion is often invoked as a driving force behind violence, disentangled from political, social, and economic reasons. In this thesis, we will be exploring the viewpoints of three prominent religious thinkers in investigating the principal causes behind what is called religious violence. The works of Karen Armstrong, Mark Juergensmeyer, and William T. Cavanaugh are considered as theoretical frameworks for understanding violence in an Islamic context. While Armstrong argues that the root cause of violence can be traced back to economic, political, and cultural reasons, Juergensmeyer contests that religion is the most important cause underlying all violence. In their analyses, both …

An Examination Of The Roles Of Classroom Quality And Approaches To Learning On The Early Academic Skills Of Latino Dual Language Learners Enrolled In Head Start, Marcela A. Galicia

USF Tampa Graduate Theses and Dissertations

This thesis examined the relationship between classroom quality, approaches-to-learning, and early academic skills among 384 Latino dual language learners (DLLs) enrolled in Florida Head Start programs. The children were living in low-income homes where Spanish was the primary language spoken by at least one parent. The study analyzed the extent to which approaches-to-learning behaviors moderate early literacy and numeracy skills in Head Start classrooms of varying quality. During the spring of their prek-4 year, the children were administered the English and Spanish Letter-Word Identification and Applied Problems subtests of the WJ-III (Woodcock, McGrew, & Mather, 2001) and the Batería III …

Exploring Preservice Teachers’ Perspectives On Dual Language Education, Kylie Ross

USF Tampa Graduate Theses and Dissertations

This dissertation investigates preservice teachers’ perspectives towards dual language education (DLE) through a mixed methods approach. This study investigates preservice teachers enrolled in an English for Speakers of Other Languages (ESOL) certification course concerning the following research questions: 1. What impact does taking an ESOL course have on preservice teachers’ attitudes and perspectives towards DLE? 2. Is there a significant difference in change in attitude between students taking the course online versus face to face (F2F)? 3. How are preservice teachers informed about what schools have dual language programs in their area? 4.What relationship may exist between attitudes, perspectives, and …

Evolutionary Dynamics Of Influenza Type B In The Presence Of Vaccination: An Ecological Study, Lindsey J. Fiedler

USF Tampa Graduate Theses and Dissertations

Understanding the evolutionary dynamics of influenza type B in human hosts is a public health concern as we strive to minimize the disease burden in seasonal epidemics. Vaccination is considered the best defense against contracting influenza, and everyone over the age of 6 months is advised to get vaccinated before each season. The effect that vaccine-acquired immunity has on the evolution of influenza B remains unclear. In the U.S., vaccine-uptake is irregular across the states, and the differing coverages present an opportunity to study how vaccination influences viral evolution. This thesis analyzes the evolutionary patterns of influenza B in the …

Measuring Influence Across Social Media Platforms: Empirical Analysis Using Symbolic Transfer Entropy, Abhishek Bhattacharjee

USF Tampa Graduate Theses and Dissertations

Social media platforms are interconnected environments that influence each other. Information from one social media platform spreads to another. This thesis proposes a platform-independent framework to analyze information transfer across social media platforms. This thesis uses Symbolic Transfer Entropy and Statistical Significance Test to measure influence and optimize the time window of influence between different platforms. To validate the framework, the thesis analyses the temporal activity dynamics and the information transfer across three different platforms, Reddit, Twitter and GitHub.

Two data driven studies are described in this thesis. The first study finds the optimum time windows of influence between the …

Threats To Teaching: An Investigation Into The Constructs Of Compassion Fatigue In The Classroom, April M. Steen

USF Tampa Graduate Theses and Dissertations

A group of suburban/rural general and special education teachers (n = 260) responded to an electronic survey. The survey was designed to measure the prevalence of an under researched area of compassion fatigue and compassion satisfaction among teachers working in suburban/rural public schools. The current study hypothesized that the relationship among compassion fatigue, compassion satisfaction, demographic variables, and teacher stress factors (time management, discipline, motivation, professional distress, and professional investment) would correlate with an increase in compassion fatigue (burnout and secondary traumatic stress) for general and special education teachers working in suburban/rural public schools; furthermore, it predicted a positive correlation …

Cubesat Constellation Design For Intersatellite Linking, Michael T. White

USF Tampa Graduate Theses and Dissertations

This thesis investigates the concept of controlling a CubeSat constellation in low-Earth orbit. Low-Earth orbits are considered because the torque used for satellite control is supplied with magnetorquers, and the closer the satellite is to Earth’s magnetic field the more control gain can be supplied. Also, this is the expected orbit altitude of future CubeSat constellations to enable communications.

Controlling a CubeSat relies on attitude determination. This means being able to estimate its attitude relative to a given reference frame. To determine the attitude, we propose to use a star tracker and a Kalman filter. A star tracker scans the …

Quantifying The Friedreich Ataxia Rating Scale And The Functional Performance Measures, Chelsea Rene Davis

USF Tampa Graduate Theses and Dissertations

Friedreich Ataxia (FA) is a debilitating autosomal-recessive neurodegenerative disorder which is characterized by ataxia of all four limbs, difficulty walking, areflexia, and dysarthria. Further complications of FA include diabetes, scoliosis, and hypertrophic cardiomyopathy. Approximately three-quarters of people with FA have onset before the age of 25 and in most instances, affected individuals will require the use of a wheelchair within ten years after symptoms emerge.

The current advancements in clinical trials have escalated the developmental demand for a scale which validates adjustments in FA. The Friedreich Ataxia Rating Scale (FARS) is a disease-specific semi-qualitative assessment which includes three subscales (functional …

Statistical Anomaly Detection And Mitigation Of Cyber Attacks For Intelligent Transportation Systems, Ammar Haydari

USF Tampa Graduate Theses and Dissertations

Secure vehicular communication is a critical factor for secure traffic management. Perfect security in intelligent transportation systems (ITS) has solid and efficient intrusion detection systems (IDS). In this paper, we consider false data injection attacks and distributed denial-ofservice attacks (DDoS), especially the stealth low-rate DDoS attacks, targeting the integrity and availability, respectively, in vehicular ad-hoc networks (VANET). Novel statistical intrusion detection and mitigation techniques are proposed for the considered attacks. The performance of the proposed methods are evaluated using a traffic simulator and a real traffic dataset. Comparisons with the state-of-the-art solutions clearly demonstrate the superior performance of the proposed …

Autonomous Monocular Obstacle Detection For Avoidance In Quadrotor Uavs, Panos Valavanis

USF Tampa Graduate Theses and Dissertations

Unmanned Aircraft Systems (UAS) research and development and applications have witnessed unprecedented levels of growth in the past two decades. Although military applications have dominated the market, it is anticipated and expected that civilian and public domain applications will be dominant in the future. Consequently, gradual and timely integration of unmanned aviation into the National Airspace System (NAS) is a real challenge, and roadmaps towards achieving full integration are already in place in the US, Canada, Australia, South Africa and European Union (EU). However, before com- plete integration of manned-unmanned aviation, additional challenging problems need to be addressed and solved, …

Training Staff's Experiences, Perceived Needs, And Suggestions For Professional Development In A Military Training Organization, George R. Young Ii

USF Tampa Graduate Theses and Dissertations

The purpose of this exploratory case study was to understand the individual and organizational training needs of a military training organization (MTO), which trains battle staffs to inform professional development program design. The study findings might lead to an improved trainer professional development program design, which fully supports the organization’s and trainers’ efforts to deliver effective adult training. The exploratory questions used in this study were: (a) in what ways do participants in MTO perceive trainer and professional development experiences throughout their military and professional careers; (b) what are participants’ perceptions of training needs in MTO; (c) what are participants’ …

Personality And Process: The Role Of Dyadic Homophily, Christina N. Falcon

USF Tampa Graduate Theses and Dissertations

This paper focuses on understanding the development of quality of intra-team processes. Utilizing semester-long project teams, social networks were used to measure the information sharing and coordination between all pairs of members with the teams. Dyadic-level homophily on the personality traits of agreeableness, extraversion, and openness to experience were used to predict the quality of these dyadic processes. Additionally, data from 11 weeks were used to examine whether the personality-process relationships change during the life cycle of the team.

Supervision In Every Breath: Enacting Zen In An Elementary Education Teacher Program, Steven R. Haberlin

USF Tampa Graduate Theses and Dissertations

The field of teacher education is in tumultuous times. Criticisms and questions about teacher preparation have led to calls for reform, including grounding teacher preparation programs in clinically rich experiences. Responsible for preparing these teachers, university- based supervisors are under added pressure to provide opportunities that connects theoretical knowledge with field experience. Complicating matters, views of supervision continue to evolve and remain divided, creating uncertainty over how to best approach the role. In light of these challenges, I argue in this study that current conceptions of supervision need to be reevaluated and expanded by entertaining new views, namely those from …

Authentication And Sql-Injection Prevention Techniques In Web Applications, Cagri Cetin

USF Tampa Graduate Theses and Dissertations

This dissertation addresses the top two “most critical web-application security risks” by combining two high-level contributions.

The first high-level contribution introduces and evaluates collaborative authentication, or coauthentication, a single-factor technique in which multiple registered devices work together to authenticate a user. Coauthentication provides security benefits similar to those of multi-factor techniques, such as mitigating theft of any one authentication secret, without some of the inconveniences of multi-factor techniques, such as having to enter passwords or biometrics. Coauthentication provides additional security benefits, including: preventing phishing, replay, and man-in-the-middle attacks; basing authentications on high-entropy secrets that can be generated and updated automatically; …

Project-Based Learning: Implementation And Reflections Of An Advanced Placement American Government Class, Arren M. Swift

USF Tampa Graduate Theses and Dissertations

The aim of this qualitative case study was to investigate the process of the enactment of a project-based learning method in an Advanced Placement American Government and Politics course and the effects of contextual factors, the beliefs of the teacher, and environmental factors had on the planning and implementation of PBL-aligned tasks. This study also investigates the experiences and perceptions of students in an Advanced Placement American Government and Politics course that enacted project-based learning.

The study was conducted to add to the literature on project-based learning. Research on the steps a teacher takes to enact project-based learning can enhance …

Representations Of Indian Christians In Bollywood Movies, Ryan A. D'Souza

USF Tampa Graduate Theses and Dissertations

This dissertation uses discursive formation as the methodological approach to examine representations of Indian Christians in eleven Bollywood movies released during the 2004-2014 decade. The decade witnessed the exit and eventual re-entry of the Hindu Right, and the citizenry during that period experienced centrist, liberal, and secular governance. Since the present of Indian Christianity is inextricable from a colonial past, and Bollywood emerges in response to colonialism, a postcolonial intervention in methodology and theory is undertaken. A postcolonial perspective illuminates the discourses that enable the formation of the postcolonial nation, i.e., the ways a nation imagines its culture, people, traditions, …

Weaved Journeys: Life Writings Of Leading And Engagement In Science Education, Tara M. Nkrumah

USF Tampa Graduate Theses and Dissertations

This study’s purpose was to explore science engagement and in/equity through science educators’ narratives of servant leadership at both the K-12 and higher education levels in the United States. The research question was: How have participants become and led others to become engaged in science? I took an arts-based approach using drawings and autobiographical data to initiate and create metissages focused on becoming engaged in science education. The findings were that: (1) Participants helped marginalized students understand the culture of science through pedagogical strategies that connected self and science; (2) Participants recognized and countered systemic forms of oppression for students …

Neuro-Correlates Of Word Processing Among Four-And-Five-Year-Old Children From Homes Varying In Socio-Economic Status, Wendy Olsen

USF Tampa Graduate Theses and Dissertations

A large body of research relates families’ socioeconomic status (SES) to child language development (Hoff & Tian, 2005). Results from these studies indicate preschoolers from low SES backgrounds may have underdeveloped linguistic foundations required for future academic success (Sirin, 2005; Lacouri & Tissington, 2011). These differences have been said to create a 30 million word-gap between the language experiences of low and middle to high SES children by the age of 3 years. Thus, children who come from lower SES backgrounds often lack the vocabulary knowledge used in school and in textbooks (Hart & Risley, 1995). One index of SES …

New Gta’S And The Pre-Semester Orientation: The Need For Informed Refinement, Jessica L. Griffith

USF Tampa Graduate Theses and Dissertations

In a First Year Composition (FYC) setting, many courses are taught by graduate assistants, regardless of if these instructors are truly qualified to teach. Incoming instructors must balance their roles as students with that of brand-new teachers, with each of them attempting to incorporate their own pedagogical approach. Therefore, it would benefit FYC programs to have a solid training program in place, specifically with the pre-semester orientation, in order to smoothly transition these new instructors.

To clarify, this is not to suggest that many programs are not already strong. It does suggest that programs must adapt to the changing climate …

Malicious Manipulation In Service-Oriented Network, Software, And Mobile Systems: Threats And Defenses, Dakun Shen

USF Tampa Graduate Theses and Dissertations

This dissertation includes three approaches we have been designed to tackle threats and challenges in network, software, and mobile security. The first approach demonstrates a new class of content masking attacks against the Adobe PDF standard, causing documents to appear to humans dissimilar to the underlying content extracted by information-based services. The second work protects sensitive data in binaries from being corrupted by cyber attackers. The last work proposes a mechanism which utilizes the unique walking patterns inherent to humans and differentiate our work from other walking behavior studies by using it as first-order authentication and developing matching methods fast …

Relationship Management Communications By Nhl Teams On Twitter, Kelsey M. Baker

USF Tampa Graduate Theses and Dissertations

The sports industry is massive, bolstered by its relationship with media. A recent development in the sport industry is the advent of social media, which offers the potential for two-way communication between sports organizations and their relevant stakeholders. Relationship management theory helps cultivate an understanding of social media as a vehicle for value creation for an organization and its stakeholders. This thesis is a content analysis of relationship communications strategies on Twitter using the accounts of five National Hockey League teams.

This study builds upon existing literature by identifying stakeholder groups targeted on Twitter by NHL teams, defining subcategories in …

Evaluation Of The Psychometric Properties Of The Systems Coaching Survey, Sarah E. Thoman

USF Tampa Graduate Theses and Dissertations

This study aimed to provide evidence for the reliability and validity of the Systems Coaching Survey (SCS). Systems coaching is an approach to building capacity among groups of educators to drive educational reform efforts by employing seven interdependent sets of skills (interpersonal communication, data-based problem solving, team facilitation, content knowledge dissemination, leadership, professional learning, evaluation). The SCS was designed to measure educators’ skills to facilitate implementation of a multi-tiered system of supports (MTSS). The 41-item survey was piloted nationally in the spring of 2017 by 1,060 educators across 180 schools in six U.S. states who had responsibilities for facilitating MTSS …

Examining Efl Learners’ Reading Comprehension: The Impact Of Metacognitive Strategies Discussion And Collaborative Learning Within Multimedia E-Book Dialogic Environments, Abrar H. Alsofyani

USF Tampa Graduate Theses and Dissertations

For most English as a Foreign Language (EFL) learners, both reading and comprehension skills are challenging to acquire. EFL students find reading challenging due to their inability to comprehend and interpret text information, which may lead, at times, to demotivation and loss of interest. The current study intends to explore how Saudi EFL learners may better tackle reading comprehension challenges by examining the utilization of metacognitive reading strategies through discussion and extensive collaborative learning activities within a multimedia e-book dialogic environment. Accordingly, the study investigates the impact of teaching metacognitive strategy-based discussion and collaborative learning on students’ application of the …

The Use Of Assistive Technology With Students With Severe Intellectual And Developmental Disabilities In Saudi Arabia: Teachers’ Perspectives, Khalid Mohammed Abu Alghayth

USF Tampa Graduate Theses and Dissertations

This study explored teachers’ perspectives of AT use, effectiveness of AT, elements teachers’ take into consideration when selecting AT, barriers, and resources needed for effective use of AT with students with severe intellectual and developmental disabilities. In order to answer this study’s research questions, I employed a sequential explanatory mixed methods design. I conducted a self-administered online survey and online interviews to collect data from participants. This study consisted of two phases, quantitative followed by qualitative interviews. A total of 92 special education teachers from four special education institutes were surveyed, and five teachers in the second phase were interviewed …

Localization Of Five Target Proteins In Tachyzoites Of Toxoplasma Gondii, Abigail M. Kaiser

USF Tampa Graduate Theses and Dissertations

Five target genes were selected in Toxoplasma gondii tachyzoites for localization studies. These five genes, detected through proteomics studies, included TgME49_227450, TgME49_223080, TgME49_262390, TgME49_230940, and TgME49_269620. Localization of these five target proteins is a first step to confirm their interaction with TgCrk2 and understand their function and role in TgCrk2 regulation of the tachyzoite cell cycle. Gene models for the targets were analyzed using ToxoDB and ApE analysis tools. Endogenous tagging constructs were created for each target. Transgenic parasites were created. Finally, localization analysis of the target proteins in tachyzoites was completed using immunofluorescent microscopy following. One protein was found …

Cross Layer-Based Intrusion Detection System Using Machine Learning For Manets, Amar Amouri

USF Tampa Graduate Theses and Dissertations

Intrusion Detection systems plays a crucial role in detecting malicious activities that deteriorate the performance of the network. Mobile AdHoc Networks (MANETs) and Wireless Sensor Networks (WSNs) are a type of wireless networks that can deliver data without any need of infrastructure for their operation. The distributed nature of these networks and the limited resources available, pose a huge challenge for the security of a network. The need for an IDS that can adapt with such challenges is of utmost importance.

Two IDS schemes are presented in this dissertation; the first scheme is based on utilizing the promiscuous mode based …

Efl Student Collaborative Writing In Google Docs: A Multiple Case Study, Quang Nam Pham

USF Tampa Graduate Theses and Dissertations

The development of modern technology has presented new opportunities for language instruction. In recent years, technology-mediated collaborative writing has received great attention in research literature. The constraints and affordances of some tools, such as Wikispaces and Google Docs for collaborative writing have been explored. Although wiki-based collaborative writing have been conducted in a variety of contexts, studies in Google Docs-based collaborative writing in English as Foreign Language (EFL) contexts are underrepresented in research literature.

To contribute to research diversity, I conducted a dissertation study in an English for Specific Purposes class at a university in southern Vietnam. Sociocultural Theory and …