Digital Commons Network^™

Adult College Students' Perceptions About Learning Mathematics Via Developmental Mathematical Xmoocs, Pelagia Alesafis Kilgore

USF Tampa Graduate Theses and Dissertations

Debates over the promising change Massive Open Online Courses (MOOCs) might offer to traditional online learning now produce significant attention and discourse among the media and higher education. Ample articles discuss the potential benefits of MOOCs from the perspectives of faculty and administration. However, little is known about students’ perceptions of MOOCs. Given the lack of relevant literature and the reality that MOOCs are created to benefit students, it is important to elicit current college students’ perceptions of MOOCs since it is well documented learning mathematics online has its problems (Ashby, Sadera, & McNary, 2011; Frame, 2012; Ho et al., …

Concerning Virtual Reality And Corporealized Media: Exploring Video Game Aesthetics And Phenomenology, Matthew Morales

USF Tampa Graduate Theses and Dissertations

Since the birth of the New Hollywood blockbuster out of the Hollywood Renaissance in the 1970s, popular moving image media has continually exhibited an intense interest in play with Newtonian physics and tactile, immediate experience. As the entertainment industry has moved further away from analog and celluloid and deeper into a digital media space, we have begun to see new a new breed of media project that differently engages with our sensorium in order to newly use (and abuse) this interest. I term this digital media project “corporealized media.” Corporealized media, as I define it, refers to media that includes, …

Becoming Legitimate: How Pmscs Are Seeking Legitimacy In The International System, Sommer Mitchell

USF Tampa Graduate Theses and Dissertations

The use of private military and security companies (PMSC) by state governments has raised many questions regarding the role of the private security industry (PSI) in conflict. This use of PMSCs by states has resulted in much debate in the public and academic spheres (Avant 2005, Dunigan 2011, Kinsey 2006, Leander 2005, Singer 2008). The PSI and PMSCs are altering the international system of norms and redefining what it means to be secure and make war. States are no longer the only entity in the international system with security needs. Intergovernmental organizations (IGOs), non-governmental organizations (NGOs) and multinational corporations (MNCs) …

Perceptions Of Arab American Mothers Of Children With Autism Spectrum Disorder: An Exploratory Study, Haifa Alsayyari

USF Tampa Graduate Theses and Dissertations

A gap exists in the literature regarding the needs, concerns, and overall experiences of Arab American parents of children diagnosed with Autism Spectrum Disorder (ASD) (Al Khatib, 2017; Goforth, 2011; Haboush, 2007). This study explored the experiences of five Arab American mothers of children with ASD. A qualitative interview approach, utilizing in-depth interviews, was used in order to investigate Arab American parents’ experiences of caring for children with ASD, their cultural beliefs and understandings of their children’s ASD, and their concerns and needs regarding their children. Six themes emerged from the interview data, which offered insight into Arab American parents’ …

Distinguishing Patterns Of Utopia And Dystopia, East And West, Huai-Hsuan Huang

USF Tampa Graduate Theses and Dissertations

Before Sir Thomas More published Utopia and defined his ideal world with this fictional land, humans had been looking for their ideal society for centuries based on various religions and cultures. Yet, there are a few studies focusing on Utopia and Dystopia in cross-cultural contexts. This thesis will explore the two main questions: 1) can Utopia and Dystopia be separated? and 2) how does the utopian concept in the West involve in Eastern culture during the postwar period in postcolonial perspective?

Phoenix in Japan and THX 1138 in U.S. are two well-known works during the post-World War II period via …

A High Accuracy Microwave Radiometric Thermometer To Measure Internal Body Temperature, Michael D. Grady

USF Tampa Graduate Theses and Dissertations

The Center for Disease Control and Prevention (CDC) released heat illness data which highlighted that ~29 heat stress hospitalizations and ~3 heat-related deaths occurred every day during the summer months within the US from years 2000 to 2014. Heatstroke- the most severe form of heat illness which oftentimes lead to death- has been cited to be entirely preventable if a timely intervention is introduced. This dissertation uses microwave radiometric thermometry to perform wireless non-invasive internal body temperature monitoring which can enable intervention methods that help to prevent deaths associated with heat-illness.

Overall, this dissertation develops a comprehensive closed-form analytical radiometric …

A Discourse Analysis Of Nursing Handoffs: Exploring Nurse-To-Nurse Interactions In Two Hospitals In Saudi Arabia, Abeer Mohammad

USF Tampa Graduate Theses and Dissertations

A new realm of discourse research has started examining medical interactions in the crowded space – hospitals (Iedema, 2007). Beyond clinical settings and dyadic doctor-patient interactions, scholars have begun investigating doctors’ interactions in various hospital settings including Emergency Rooms and hospitals’ wards (e.g., Eggins & Slade, 2012; Slade & Eggins, 2016; Slade et al., 2015). Other investigations have expanded this scope of discourse research to include other health professionals, such as nurses (e.g., Staples, 2015). Drawing on discourse analytic approaches (Critical Discourse Analysis, Halliday’s Systemic Functional Grammar, and Interactional Sociolinguistics), this study examined nurse-to-nurse handoff interactions in two hospitals in …

Context-Based Human Activity Recognition Using Multimodal Wearable Sensors, Pratool Bharti

USF Tampa Graduate Theses and Dissertations

In the past decade, Human Activity Recognition (HAR) has been an important part of the regular day to day life of many people. Activity recognition has wide applications in the field of health care, remote monitoring of elders, sports, biometric authentication, e-commerce and more. Each HAR application needs a unique approach to provide solutions driven by the context of the problem. In this dissertation, we are primarily discussing two application of HAR in different contexts. First, we design a novel approach for in-home, fine-grained activity recognition using multimodal wearable sensors on multiple body positions, along with very small Bluetooth beacons …

Using Green Messages To Cue Recycling Tendencies, Danielle Quichocho

USF Tampa Graduate Theses and Dissertations

Recycling of common plastics is a practical way to limit the amount of waste that ends up in landfills, and eventually contributes to various forms of pollution. However, statistics indicate that it is not currently a normalized, prioritized behavior. A pilot study indicated that relying only on preexisting frameworks such as the Elaboration Likelihood Model to understand consumer perceptions simply does not encompass the scope of the topic. Consumer experiences with green messages, especially in the current climate of a saturated advertising market are incredibly complex. Understanding these experiences is also currently being impeded by inconsistencies in how researchers in …

Faculty Perceptions Of Core Components Perceived To Be Effective In Their Prominent Graduate Entrepreneurship Education Programs, James Grant Taylor

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to identify Core components perceived by faculty to be effective in their prominent graduate entrepreneurship education programs. The study sought to identify the best practices in graduate entrepreneurship education programs from the perceptions of faculty in the field.

Research questions guiding the study were: (1) What Core components related to the following Broad question areas are perceived by faculty to be effective in their prominent graduate entrepreneurship education programs: Activities and initiatives; Adult education principles and practices; Alumni and mentoring; Course offerings; Curriculum and degrees; Faculty data; Institutional characteristics; Instructional methods; Student companies; and …

Full-Time Teleworkers Sensemaking Process For Informal Communication, Sheila A. Gobes-Ryan

USF Tampa Graduate Theses and Dissertations

Organizations have traditionally accomplished connectivity among their workers by co-locating them in shared organizational workplaces. However, information and communication technologies (ICTs) are offering alternative ways to accomplish this kind of connection. This change raises important questions about what it is possible to accomplish through such mediated communicative connections, and if there are work activities that are best accomplished face-to-face. Practitioners and researchers have historically identified informal communication as a process essential to organizational success that is difficult or impossible to accomplish outside of shared physical environments. This study documents the ways full-time teleworkers are accomplishing informal communication without being in …

Metal-Organic Frameworks And Mof-Derived Carbon Materials For Fuel Cell Applications, Kia Williams

USF Tampa Graduate Theses and Dissertations

Rapid industrial globalization and technological development and energy consumption across the globe has significantly increased in response to mounting energy needs. The necessity for alternative and sustainable energy conversion devices has become apparent with the growth of energy utilization. In recent years, many research efforts have been made in the development of low-cost, efficient, environmentally friendly energy conversion devices. One type of energy conversion device, polymer electrolyte membrane fuel cells (PEMFCs), uses hydrogen oxidation at the anode and oxygen reduction at the cathode, with a solid-state proton conducting membrane between to generate energy with water as a by-product. PEMFCs use …

Community College Second Language Students’ Perspectives Of Online Learning: A Phenomenological Case Study, Li-Lee Tunceren

USF Tampa Graduate Theses and Dissertations

In this phenomenological case study, I elicited the perspectives of first-year community college second language (L2) students enrolled in an online general education course, Studies in Applied Ethics. Four L2 participants narrated their lived experiences and impressions of distance learning via Skype interviews at early, mid, and end-of-semester junctures. The Distance Education instructional model Community of Inquiry (COI) served as the theoretical framework for the inquiry. The multilingual participants suggested the COI components Teaching Presence (design and facilitation of the course) and Learning Presence (self-regulated learning behaviors) led to Cognitive Presence (the understanding of and ability to demonstrate content …

Neural And Behavioral Mechanisms Of Clear Speech, Jenna Silver Luque

USF Tampa Graduate Theses and Dissertations

Clear speech is a speaking style that has been shown to improve intelligibility in adverse listening conditions, for various listener and talker populations. Clear-speech phonetic enhancements include a slowed speech rate, expanded vowel space, and expanded pitch range. Although clear-speech phonetic enhancements have been demonstrated across a variety of talkers, only a subset of these changes may be required for listeners to benefit perceptually from clear speech. Furthermore, while current literature has provided some understanding of the phonetic enhancements that are typical of clear speech and the improvements in intelligibility resulting from its use, less is understood regarding how listeners …

Manipulating Electromagnetic Waves With Enhanced Functionalities Using Nonlinear And Chiral Metamaterials, Sinhara Rishi Malinda Silva

USF Tampa Graduate Theses and Dissertations

Metamaterials are artificial structures, which periodically arranged to exhibit fascinating electromagnetic properties, not existing in nature. A great deal of research in the field of metamaterial was conducted in a linear regime, where the electromagnetic responses are independent of the external electric or magnetic fields. Unfortunately, in linear regime the desired properties of metamaterials have only been achieved within a narrow bandwidth, around a fixed frequency. Therefore, nonlinearity is introduced into metamaterials by merging meta-atoms with well-known nonlinear materials. Nonlinear metamaterials are exploited in this dissertation to introduce and develop applications in microwave frequency with broadband responses. The nonlinearity was …

Sol-Gel Niobia-Based Sorbents For The Enrichment Of Organophosphorus Compounds By Capillary Microextraction Online Coupled To High Performance Liquid Chromatography, Sheshanka Kesani

USF Tampa Graduate Theses and Dissertations

Sample preparation is a key step in chemical analysis, and includes isolation of target analytes, removal of interferences, preconcentration, and/or modification of target analytes (if needed). Sample preparation is also the most time-consuming and error-prone step in the whole analytical process. Traditional sample preparation techniques involve hazardous solvents. Considering the environmental and health safety, it is desirable to reduce or eliminate organic solvents in sample preparation. Solid phase microextraction (SPME) was introduced as a solvent free sample preparation technique. Capillary microextraction (CME) is one of the formats of SPME that can be easily coupled to high performance liquid chromatography (HPLC). …

Aphra Behn On The Contemporary Stage: Behn's Feminist Legacy And Woman-Directed Revivals Of The Rover, Nicole Elizabeth Stodard

USF Tampa Graduate Theses and Dissertations

This study theorizes the origins and history of the professional female playwright and director from the Restoration period to the present day through the stage history of Behn's most popular play, The Rover. Part one is comprised of two chapters: the first in this section argues the importance of appreciating Behn's proto-directorial function in the Restoration theatre and her significance to the history of feminism and women in professional theatre; the second chapter in this section examines the implications of casting practices and venue changes to eighteenth-century revivals of Behn's canon with a particular eye towards what a contemporary director …

The Role Of Sgs1 And Exo1 In The Maintenance Of Genome Stability., Lillian Campos-Doerfler

USF Tampa Graduate Theses and Dissertations

Genome instability is a hallmark of human cancers. Patients with Bloom’s syndrome, a rare chromosome breakage syndrome caused by inactivation of the RecQ helicase BLM, result in phenotypes associated with accelerated aging and develop cancer at a very young age. Patients with Bloom’s syndrome exhibit hyper-recombination, but the role of BLM and increased genomic instability is not fully characterized. Sgs1, the only member of the RecQ family of DNA helicases in Saccharomyces cerevisiae, is known to act both in early and late stages of homology-dependent repair of DNA damage. Exo1, a 5′–3′ exonuclease, first discovered to play a role …

Experimental Study Of High-Temperature Range Latent Heat Thermal Energy Storage, Chatura Wickramaratne

USF Tampa Graduate Theses and Dissertations

Among all thermal energy storage (TES) systems, latent heat thermal energy storage (LHTES) attracts high interest due to its high energy density and high exergetic efficiency. Due to the high enthalpy of fusion and low cost, inorganic salts are becoming popular as phase change materials and are used as the storage media in LHTES systems. The main drawbacks for the inorganic salts are their low thermal conductivity and high reactivity above 500°C. Therefore, designing a cost-effective containment at these conditions with longevity is a challenge. Macro-encapsulation of the PCM is one way to solve both the PCM containment issue as …

The Common Core State Standards And The Elementary Social Studies Curriculum: A Case Study Of Teacher Perceptions In Florida, Kacie M. Nadeau

USF Tampa Graduate Theses and Dissertations

The most recent phase of curriculum reform in the era of accountability is the Common Core State Standards (CCSS) which have essentially reshaped the landscape of public education. Its objective of preparing K-12 students for college and career upon high school graduation have prioritized English language arts, mathematics, and science over social studies, which is not part of widespread high-stakes testing for elementary students. This qualitative case study investigated eleven intermediate elementary teachers’ perceptions of alignment between CCSS and the elementary social studies curriculum. Data gathering analysis included two semi-structured interviews and an archival analysis of the mandated curriculum. The …

Education And Health Impacts Of An Affirmative Action Policy On Minorities In India, Robin Dhakal

USF Tampa Graduate Theses and Dissertations

Article 334 of the Constitution of India (1950) stipulates that certain electoral districts in each state should be reserved for minority groups, namely the “Scheduled Caste”(SC) and the Scheduled Tribe”(ST), through the reservation of seats in the states' legislative assemblies. Even though the original article stated that the reservation policy would be in place for just twenty years, it has been amended several times and is still in effect. This dissertation examines the impact of the policy on the education and health outcomes of the SC population. Variations in seat quotas are generated by the timing of elections in different …

Understanding Gas Sorption Mechanisms In Metal–Organic Materials Via Computational Experimentation, Katherine A. Forrest

USF Tampa Graduate Theses and Dissertations

Metal–organic materials (MOMs), a type of porous crystalline structure composed of organic ligands jointed with metal ions, have captured the interest of scientists as potentially useful in gas sorption applications. Some of the most crucial avenues of investigation are in H2 storage (for use as a clean burning fuel source) and CO2 capture and sequestration (to remove the greenhouse gas from the environment).

A major advantage of MOMs for such applications is their high variability in terms of physical dimensions and chemical moieties, based on composition and synthesis conditions, making them potentially customizable for specific application if necessary structural characteristics …

Adverse Childhood Experiences And Its Association With Cognitive Impairment In Non- Patient Older Population, Mohini D. Dutt

USF Tampa Graduate Theses and Dissertations

This study explores cognitive impairment and its correlation to early- life adverse experiences in non-patient population between the ages of 50 to 65. This developmental approach and observational study design explores cognition in pre-clinical Alzheimer’s disease (AD). Using a standardized neuropsychological instrument, the Montreal Cognitive Assessment (MoCA) and clinically administered questionnaire, the ACE (Adverse Childhood Experiences), I hypothesized that participants with high ACE scores will inversely have low MoCA scores.

My goal was to use a multiple linear regression model with 3 covariates and 1 predictor of interest (ACEs). At 80% power, a sample size of 40 was calculated as …

Improving Reading Comprehension Of Children With Asd: Implication Of Anaphoric Reference Support With Computer Programming, Seda Karayazi Ozsayin

USF Tampa Graduate Theses and Dissertations

This study examined the effects of anaphoric pronouns presented via computer screen on the reading comprehension of four children with Autism Spectrum Disorder (ASD). Stories from the education.com website were used to collect data. The students’ responses to reading comprehension questions during baseline, treatment, and follow-up sessions were analyzed. The perceptions of students regarding anaphoric pronouns were also analyzed. Initially, reading levels, fluency and comprehension rate, of the students with ASD were identified via the Gray Oral Reading Test, Fifth edition (GORT-5), Test of Narrative Language (TNL), and Test of Narrative Language, Second edition (TNL-2). A randomized multiple baseline (MBL) …

The Control Of Water Contaminants Assisted By Natural Materials, Wen Zhao

USF Tampa Graduate Theses and Dissertations

Natural materials can be used to remove water contaminants by applying proper physical, chemical, and biological water treatment processes. This study involves using natural materials, as they are considered to be more environmentally benign and cost-effective than synthetic materials. This dissertation concentrates on monitoring five major water quality parameters—ammonia, fluoride, turbidity, pH, and fecal indicator bacteria (FIB) —in two major applications where clean water is needed. The focus is on meeting the water quality requirements for each contaminant. The overall objective of this study is to control the levels of ammonia in aquaculture wastewater, and adjust fluoride, turbidity, pH, and …

The Ecology Of Antibiotic Resistance: Sources And Persistence Of Vancomycin-Resistant Enterococci And Antibiotic Resistant Genes In Aquatic Environments, Suzanne M. Young

USF Tampa Graduate Theses and Dissertations

The growing crisis of antibiotic resistance is a major threat to ecosystems and human health. Infections caused by known and emerging antibiotic resistant pathogens are on the rise globally, with approximately 700,000 deaths per year caused by antibiotic resistant bacteria (1). In the United States, infections from antibiotic resistant bacteria cause more than 2 million illnesses and 23,000 deaths (2). Antibiotic resistant bacteria and antibiotic resistance genes are released into aquatic ecosystems through hospital waste, residential sewer lines and animal agricultural waste streams. Animal agriculture accounts for approximately 70% of antibiotic use in the United States (3). In agricultural ecosystems, …

Modeling, Simulation And Characterization Of Optoelectronic Properties Of 2d-3d Coo-Ato Nano Structures, Ridita Rahman Khan

USF Tampa Graduate Theses and Dissertations

Devices for converting solar energy to electrical energy are not considerably efficient, though there are abundant renewable solar energy sources. Therefore there is a continuous call for investigation of new devices that are efficient and eco-friendly thereby contributing to harvested energy technology.

This thesis characterizes the optical constant (refractive index) of a novel material, cobalt oxide-antimony doped tin oxide (CoO-ATO). Thin film of CoO-ATO is generated using spin coating of CoO-ATO solution having 76.33% chloroform, 13.47% polystyrene, 10% antimony doped tin oxide and 0.2% cobalt oxide by weight. The thin film is analyzed through ellipsometry to acquire the refractive index …

Household Food Waste Prevention In Malaysia: An Issue Processes Model Perspective, Syahirah Abd Razak

USF Tampa Graduate Theses and Dissertations

Food waste has been a worldwide concern for several decades but this problem is relatively new in the Malaysian context due to the increasing amount of food waste in recent years. Thus, the goal of the study is to provide the basic information of knowledge and involvement level, and their interaction in food waste prevention among households in Malaysia. This study seek to further mass communication research in the area of food waste. The Hallahan’s Issues Processes Model was used within this study in order to determine the relationship between knowledge, involvement, and food waste prevention behavior. The convenience sampling …

Psychopathic Traits, Gender, And Sexual Motivations: Paths To Sexual Coercion, Amy M. Hoffmann

USF Tampa Graduate Theses and Dissertations

Although evidence suggests that both men and women perpetrate sexual coercion, the majority of work has traditionally focused on men as perpetrators and women as victims. Psy-chological factors, including psychopathic traits and sexual motivations, have been proposed to characterize sexually coercive men. However, the sparse existing research using female samples suggests that these models may not adequately characterize female sexual coercers. In particular, although there is evidence that sexual motivations may mediate the relationship between psycho-pathic traits and coercion perpetration, there is a dearth of information regarding gender as a po-tential moderator of these mediating paths. To improve our understanding …

Bioleaching Potential Of Filamentous Fungi To Mobilize Lithium And Cobalt From Spent Rechargeable Li-Ion Batteries, Aldo Lobos

USF Tampa Graduate Theses and Dissertations

Demand for lithium (Li) and cobalt (Co) is on the rise, due in part to their increased use in rechargeable Li-ion batteries (RLIB). Current recycling processes that utilize chemical leaching efficiently recover in Li and Co from the cathode material in spent batteries; however, these processes are costly and emit hazardous waste into the environment. Therefore, a more sustainable process for recycling Li and Co is needed, and bioleaching may provide a solution. Fungal bioleaching has been shown in previous studies to effectively mobilize metals (Pb, Al, Mn, Cu, and Zn) from mine tailings, electronic scrap, and spent batteries with …