Digital Commons Network^™

Design And Implementation Of A Ferrocement Improved Cookstove In Rural Panama, Josh Donegan

USF Tampa Graduate Theses and Dissertations

Household air pollution contributes to the premature death of more than 4 million people annually. Improved cookstoves are one technological intervention that can potentially reduce exposure to household air pollution. However, improved cookstove implementation programs need to consider measures to increase sustainability and promote long-term adoption. The objectives of this research were 1) to develop and implement a new ferrocement cookstove for Peña Blanca, a rural indigenous community in the Ngäbe-Bugle region of Panama, 2) to evaluate its potential sustainability in comparison to the most common cooking technologies observed in the community, 3) to prepare a construction manual for the …

Design Of Micro-Scale Energy Harvesting Systems For Low Power Applications Using Enhanced Power Management System, Majdi M. Ababneh

USF Tampa Graduate Theses and Dissertations

The great innovations of the last century have ushered continuous progress in many areas of technology, especially in the form of miniaturization of electronic circuits. This progress shows a trend towards consistent decreases in power requirements due to miniaturization. According to the ITRS and industry leaders, such as Intel, the challenge of managing and providing power efficiency still persist as scaling down of devices continues. A variety of power sources can be used in order to provide power to low power applications. Few of these sources have favorable characteristics and can be designed to deliver maximum power such as the …

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., …

Angiostrongylus Cantonensis: Epidemiologic Review, Location-Specific Habitat Modelling, And Surveillance In Hillsborough County, Florida, U.S.A., Brad Christian Perich

USF Tampa Graduate Theses and Dissertations

Angiostrongylus cantonensis is a parasitic nematode endemic to tropical and subtropical regions and is the leading cause of human eosinophilic meningitis. The parasite is commonly known as rat lungworm because the primary host in its lifecycle is the rat. A clinical overview of rat lungworm infection is presented, followed by a literature review of rat lungworm epidemiology, risk factors, and surveillance projects. Data collected from previous snail surveys in Florida was considered alongside elevation, population per square kilometer, median household income by zip code territory, and normalized difference vegetation index specific to the geographic coordinates from which the snail samples …

Prevention Of Post Intensive Care Syndrome-Family With Sensation Awareness Focused Training Intervention: A Randomized Controlled Trial Pilot Study, Paula L. Cairns

USF Tampa Graduate Theses and Dissertations

Post Intensive Care Syndrome-Family (PICS-F) refers to acute and chronic psychological effects of critical illness on family members of patients in intensive care units (ICU). Evidence about the increase and persistence of PICS-F warrants the need for prevention interventions. This study evaluated the feasibility of providing Sensation Awareness Focused Training (SĀF-T) during the ICU stay for spouses of mechanically ventilated patients. Methods: A randomized controlled trial of SĀF-T versus a control group was conducted (n=10) to assess safety, acceptability, feasibility, and effect size of the intervention on PICS-F symptoms. Symptoms assessed as outcome measures included stress, anxiety, depression, posttraumatic stress …

"Ain't I A Woman?": Black Women Negotiate And Resist Systemic Oppression In Undergraduate Engineering And Mathematics Disciplines, Jessica Alyce Wilson

USF Tampa Graduate Theses and Dissertations

In this inquiry I used Black Feminist Thought as the interpretive lens to investigate the characterizations and experiences of high achieving Black women undergraduate engineering and mathematics majors at a predominantly white institution. The qualitative inquiry considered intersecting oppressions to evaluate the experiences of this population. In particular, Black women operate in the intersection of race and gender, thus for a thorough analysis of their engineering and mathematics experiences to occur, the historical context of the United States and its oppressive structures must be considered. Stereotypes and systemic oppression follow this socially constructed identity as the participants enter the fields …

Novel Role Of Histone Deacetylase 11 (Hdac11) In Regulating Normal And Malignant Hematopoiesis, Jie Chen

USF Tampa Graduate Theses and Dissertations

During hematopoiesis, multilineage progenitor cells and the precursors are committed to individual hematopoietic lineages. In normal myelopoiesis, the immature myeloid cells (IMCs) differentiate into macrophages, neutrophils or dendritic cells. However, under tumor burden, these IMCs differentiate into myeloid derived suppressor cells (MDSCs) result in an up-regulation of immune suppressive factors and pro-tumor effect. The development of normal or malignant is tightly controlled by endogenous signals such as transcription factors and epigenetic regulations. HDAC11 is the newest identified members of the histone deacetylase (HDAC) family. Previous study in our group had identified HDAC11 as a negative regulator of interleukin 10 (IL-10) …

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’ …

Perceptual And Physiologic Analysis Of Dystussia In Amyotrophic Lateral Sclerosis, Stephanie Anne Watts

USF Tampa Graduate Theses and Dissertations

Swallowing and cough are two vital functions that are reflexive in nature and are related to each other in terms of shared neural and anatomical space. When a disorder impacts normal and effective swallowing and/or cough, the consequences can be life-threatening. Evaluation and treatment of swallowing and cough disorders can fall under the scope of practice of the speech-language pathologist and speech-language pathologists often are leading professionals. Furthermore, much of the current research on swallowing and cough is spearheaded by speech-language pathologists often working with a multi-disciplinary team. The focus of this dissertation is on the clinical evaluation of cough …

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 …

Spatial-Temporal Distribution Of Mosquito Larval Hot Spots In Papoli, Uganda: A Community-Based Approach To Mosquito Control, Ryan E. Tokarz

USF Tampa Graduate Theses and Dissertations

Mosquito species of the Anopheles gambaie complex are the predominant vectors of malaria transmission throughout sub-Saharan Africa. These mosquitoes tend to be endophilic, as well as anthropophilic, making them prime candidates for disease transmission. Within the same region, related mosquito vectors play a significant role in the transmission of additional human and zoonotic diseases. Furthermore, mosquito nuisance biting is an immense issue that cannot be ignored in terms of its impact on African communities. Depending on the respective factors involved, mosquito control programs throughout the continent have attempted to tackle these issues in a multitude of ways. This research approached …

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 …

Understanding The Linkages Between Urban Transportation Design And Population Exposure To Traffic-Related Air Pollution: Application Of An Integrated Transportation And Air Pollution Modeling Framework To Tampa, Fl, Sashikanth Gurram

USF Tampa Graduate Theses and Dissertations

Rapid and unplanned urbanization has ushered in a variety of public health challenges, including exposure to traffic pollution and greater dependence on automobiles. Moreover, vulnerable population groups often bear the brunt of negative outcomes and are subject to disproportionate exposure and health effects. This makes it imperative for urban transportation engineers, land use planners, and public health professionals to work synergistically to understand both the relationship between urban design and population exposure to traffic pollution, and its social distribution. Researchers have started to pay close attention to this connection, mainly by conducting observational studies on the relationship between transportation, urban …

Investigations Into The Non-Mevalonate Isoprenoid Biosynthesis Pathway's First Two Enzymes Utilizing Hybrid Qm/Mm Techniques, Justin K. White

USF Tampa Graduate Theses and Dissertations

Molecular drug design begins with the identication of a problem to solve. This work identies the growing resistance among human pathogens to current treatments. Once the problem is identied and understood, solutions must be proposed. This one is straight forward, we need new antimicrobial drugs. More specically, we need to identify novel targets to inhibit. A large portion of antibiotics focus on disruption of macromolecular production while only a few target metabolic systems. Finally, you need to propose solutions based on the information gathered. In order to avoid existing resistance, it is important to avoid the macromolecular route and focus …

Sleep And Alzheimer’S Disease: A Critical Examination Of The Risk That Sleep Problems Or Disorders Particularly Obstructive Sleep Apnea Pose Towards Developing Alzheimer’S Disease, Omonigho A. Michael Bubu

USF Tampa Graduate Theses and Dissertations

This dissertation is a critical examination of the relationship between sleep problems and/or disorders, particularly Obstructive Sleep Apnea (OSA) and Alzheimer Disease (AD). First, I conducted an exhaustive systematic review of existing literature, and identified gaps in research that led to specific research aims. For the first aim, I conducted the first ever-published meta-analysis examining sleep, cognitive decline and AD, providing an aggregate effect of sleep on AD. Second, focusing on OSA, I conducted a study examining OSA’s effect on longitudinal changes on AD biomarkers in cognitive normal, MCI and AD subjects, using data from the Alzheimer Disease Neuroimaging Initiative …

Cost-Effectiveness Analysis Of Targeted Herpes Zoster Vaccination In Adults 50-59 At Increased Cardiovascular Risk, Kathleen M. Glassner

USF Tampa Graduate Theses and Dissertations

Background: Over the last twenty years the incidence of herpes zoster (HZ) infection, also known as shingles, has been increasing among adults for unknown reasons. The economic burden of HZ is currently estimated at over $1 billion per year in the United States (U.S.) and is expected to increase as the susceptible adult population ages. HZ is caused by a re-activation of the varicella zoster virus (VZV), chicken pox, and more than 95% of adults living today carry the virus with a lifetime risk of 1 in 3 for developing HZ. In 2006 the FDA approved a vaccine for the …

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 …

Music Ensemble Participation: Personality Traits And Music Experience, Tracy A. Torrance

USF Tampa Graduate Theses and Dissertations

The personality of musicians, artists, and other creative persons is of considerable interest to researchers and educators who seek to identify traits associated with musical behaviors. Personality traits can influence music behaviors such as instrument choice, ensemble choice, practice habits, and musical experience, which may contribute to continued music participation. The purpose of this study is to explore the relationships between personality type, music ensemble section, instrument choice (vocal or instrumental), and musical experience in college students and individuals who choose to continue participation after college. Few studies have concentrated on personality characteristics of ensemble members at the collegiate level …

Compact And Wideband Mmic Phase Shifters Using Tunable Active Inductor Loaded All-Pass Networks, David M. Zaiden

USF Tampa Graduate Theses and Dissertations

This dissertation addresses the design of monolithically integrated phase shifters at S- and L- frequency bands using a commercially available GaAs process from Triquint. The focus of the design is to operate over a wide bandwidth with full 360° phase shift capability, 50 Ω input/output impedance match and low RMS phase and gain errors. The first version of the design is based on passive all-pass phase shifters integrated with wideband amplifiers to compensate for insertion loss. This design uses a 4-bit system to achieve the required phase shift and each bit consists of 3 sections of all-pass filters designed at …

Evaluation Of A Microsphere-Based Immunoassay (Mia) In Measuring Diagnostic And Prognostic Markers Of Dengue Virus Infection, Jason H. Ambrose

USF Tampa Graduate Theses and Dissertations

Infections with dengue viruses (DENV) constitute both a global problem as well as locally in Florida. DENV comprise four distinct serotypes of single-stranded RNA viruses and belong to the family Flaviviridae. DENV are among the most medically important arboviruses in the world and cases may currently exceed 400 million per annum. Additionally, dengue established its first recorded endemic transmission cycle in the state of Florida in over a half century, first within the Florida Keys during 2009-10 followed by an unrelated outbreak in Martin County in 2013. The clinical profile of DENV infections ranges from a mild febrile illness …

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 …

Generalized D-Kaup-Newell Integrable Systems And Their Integrable Couplings And Darboux Transformations, Morgan Ashley Mcanally

USF Tampa Graduate Theses and Dissertations

We present a new spectral problem, a generalization of the D-Kaup-Newell spectral problem, associated with the Lie algebra sl(2,R). Zero curvature equations furnish the soliton hierarchy. The trace identity produces the Hamiltonian structure for the hierarchy. Lastly, a reduction of the spectral problem is shown to have a different soliton hierarchy with a bi-Hamiltonian structure. The first major motivation of this dissertation is to present spectral problems that generate two soliton hierarchies with infinitely many commuting conservation laws and high-order symmetries, i.e., they are Liouville integrable.

We use the soliton hierarchies and a non-seimisimple matrix loop Lie algebra in order …

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 …

Second-Generation Bruja: Transforming Ancestral Shadows Into Spiritual Activism, Lorraine E. Monteagut

USF Tampa Graduate Theses and Dissertations

The aim of this dissertation is to develop and illustrate a spiritually centered narrative method for transforming disorder into agency and action. I use my own position as a second-generation Hispanic female immigrant to show how training in a spiritual practice that mirrors my ancestral traditions helped me productively move through a sense of displacement, illness, and lack of purpose. My research includes travel to Havana, Cuba, and immersion in a five-week shamanic counseling training program in Tampa, Florida, during which I learned how to narrate my experiences as I engaged in shamanic journeying. As I reflect on these …

Physical Layer Algorithms For Reliability And Spectral Efficiency In Wireless Communications, Zekeriyya Esat Ankarali

USF Tampa Graduate Theses and Dissertations

Support of many different services, approximately 1000x increase of current data rates, ultra-reliability, low latency and energy/cost efficiency are among the demands from upcoming 5G standard. In order to meet them, researchers investigate various potential technologies involving different network layers and discuss their trade-offs for possible 5G scenarios. Waveform design is a critical part of these efforts and various alternatives have been heavily discussed over the last few years. Besides that, wireless technology is expected to be deployed in many critical applications including the ones involving with daily life activities, health-care and vehicular traffic. Therefore, security of wireless systems is …

From Object To Other: Models Of Sociality After Idealism In Gadamer, Levinas, Rosenzweig, And Bonhoeffer, Christopher J. King

USF Tampa Graduate Theses and Dissertations

This dissertation offers an account of the different ways in which putatively idealist and transcendental models of sociality, which grounded the subject’s relation to other human beings in the subject’s own cognition, were rejected and replaced. Scrapping this account led to a variety of models of sociality which departed from the subject as the ground of sociality, positing grounds outside of the subject. Hans-Georg Gadamer, Emmanuel Levinas, Franz Rosenzweig, and Dietrich Bonhoeffer represent alternative positions along a spectrum of models of sociality which reject the idealist concept of sociality.

The central argument of this dissertation claims that the responses to …

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 …