Digital Commons Network^™

The Simulation & Evaluation Of Surge Hazard Using A Response Surface Method In The New York Bight, Michael H. Bredesen

UNF Graduate Theses and Dissertations

Atmospheric features, such as tropical cyclones, act as a driving mechanism for many of the major hazards affecting coastal areas around the world. Accurate and efficient quantification of tropical cyclone surge hazard is essential to the development of resilient coastal communities, particularly given continued sea level trend concerns. Recent major tropical cyclones that have impacted the northeastern portion of the United States have resulted in devastating flooding in New York City, the most densely populated city in the US. As a part of national effort to re-evaluate coastal inundation hazards, the Federal Emergency Management Agency used the Joint Probability Method …

The Relationship Between Illness Representations, Avoidant Coping, And Health Outcomes In People With Ongoing Symptoms Of Chronic Illness, Emily A. Bell

UNF Graduate Theses and Dissertations

Illness representations play an important role in the way people with chronic illness manage symptoms and view their overall health. Those suffering from functional somatic syndromes as well as conventional diagnoses seek information and meaning about their health threats in order to make appraisals concerning health outcomes. The primary interest of this study was to determine whether illness representations predict coping strategies which in turn influence general health outcomes. Data was collected from a series of four online surveys that measured an individual’s illness representations (IPQ-R), coping responses (Brief COPE), and health outcomes (RAND-36). The sample included 204 participants (169 …

Multi-Cultural Model Of Relational Personhood And Implementing Philosophy For Children (P4c): A Refusal Of The Illusion Of Individualism In America, Aron J. Burnett

UNF Graduate Theses and Dissertations

The goal of this thesis is to influence a re-evaluation of self conceptions in America in order to influence an alternative relational understanding of one’s self and others. This thesis begins based on the premise that individualism is a prominent aspect of American societies meaning its member’s understandings of their selves are self-centered, often non-empathetic, and in general more concerned with their own lives than that of others. The first half of this thesis is dedicated analyzing the American situation through an analysis of the sources of individualism and proving that individualism is actually an illusion that individuals falsely believe …

Bottom Friction Assessment For Hydrodynamic Currents In The Lower St. Johns River, Henok Kefelegn Demissie

UNF Graduate Theses and Dissertations

A preexisting version of the 2D finite-element hydrodynamic model (code) ADCIRC was modified to enable assimilation of velocity data for calculation of longwave hydrodynamics of the lower St. Johns River. The data assimilation also enables model calibration and parameter estimation of directionally variant Manning’s n value using an anisotropic formulation of bottom roughness. This modified version of the ADCIRC code differs from the original ADCIRC model, as it introduces a module to provide evaluation of directional Manning’s roughness coefficient using observed velocity data for ebb and flood flow durations. The vector-based directional Manning’s n value is found by comparing the …

Sorting By Block Moves, Jici Huang

UNF Graduate Theses and Dissertations

The research in this thesis is focused on the problem of Block Sorting, which has applications in Computational Biology and in Optical Character Recognition (OCR). A block in a permutation is a maximal sequence of consecutive elements that are also consecutive in the identity permutation. BLOCK SORTING is the process of transforming an arbitrary permutation to the identity permutation through a sequence of block moves. Given an arbitrary permutation π and an integer m, the Block Sorting Problem, or the problem of deciding whether the transformation can be accomplished in at most m block moves has been shown to be …

Tapping Into The Social Capital Of African American Alumni Of Urban High Schools, Adrian Derrick Johnson

UNF Graduate Theses and Dissertations

The purpose of this study was to identify and understand how African American alumni of urban high schools perceived that they could best contribute to their former schools. Despite numerous improvement efforts for several decades, the academic performance of urban high school students has failed to keep pace with that of their suburban counterparts. This research was framed around the premise that the rich legacies and diverse cultural experiences of African American alumni of urban high schools could mitigate the outside factors that negatively impact student performance at urban schools. These funds of knowledge, as Moll and Amanti (2005) described …

Community Leaders' Perceptions Of Their Leadership Behaviors And Practices Used To Influence K-12 Public Education: A Q Methodology Study, Mai Dinh Keisling

UNF Graduate Theses and Dissertations

This Q methodology study focused on the perspectives of diverse community leaders concerning how their perceptions of leadership behaviors and practices were used to influence K-12 public education. The leaders’ perspectives were identified, described, analyzed, and compared with others who shared similar views through the use of Q methodology. Through purposeful and snowball sampling, a diverse group of community leader participants first responded to an open-ended questionnaire, inviting them to provide the leadership behaviors and practices they use to influence K-12 public education. This process of concourse development resulted in a total of 263 statements. These statements were then systematically …

An Empirical Performance Analysis Of Iaas Clouds With Cloudstone Web 2.0 Benchmarking Tool, Neha Soni

UNF Graduate Theses and Dissertations

Web 2.0 applications have become ubiquitous over the past few years because they provide useful features such as a rich, responsive graphical user interface that supports interactive and dynamic content. Social networking websites, blogs, auctions, online banking, online shopping and video sharing websites are noteworthy examples of Web 2.0 applications. The market for public cloud service providers is growing rapidly, and cloud providers offer an ever-growing list of services. As a result, developers and researchers find it challenging when deciding which public cloud service to use for deploying, experimenting or testing Web 2.0 applications. This study compares the scalability and …

Comparison Of Hydrologic Model Performance Statistics Using Thiessen Polygon Rain Gauge And Nexrad Precipitation Input Methods At Different Watershed Spatial Scales And Rainfall Return Frequencies, Amanda E. Tancreto

UNF Graduate Theses and Dissertations

As hydrological computer modeling software continues to increase in complexity, the need for further understanding of the value of different model input datasets becomes apparent. Frequently used precipitation model input include rain gauge data and next-generation radar–based (NEXRAD) rainfall data. Rain gauge data are usually interpolated across a model domain using various methods including the Thiessen Polygon methodology, which may be data-sparse in some areas and overly data-dense in others. However, rain gauge data are generally very easy to use in hydrologic model development, often requiring little to no data processing. NEXRAD data have the potential to improve hydrologic runoff …

Camp, Combat, And Campaign: North Carolina's Confederate Experience, Peter R. Thomas Jr.

UNF Graduate Theses and Dissertations

This research examines a sample of North Carolina Confederates as they transitioned from citizen to soldier between 1861 and 1863 during the American Civil War, and it questions how levels of commitment and devotion emerged during this transformation. North Carolina Confederates not only faced physical and emotional challenges as they transitioned from citizen to soldier, but also encountered social obstacles due to the strict social order of the Old South. Orthodoxy maintains this social dissent hindered any form of solidarity among North Carolina Confederates. The question remains, though, why did so many North Carolinians remain committed to the Confederacy until …

Effect Of Lateral Stiffness On Bridge Deck Performance, Andrea Del Pilar Toro

UNF Graduate Theses and Dissertations

The use of the empirical deck design method has increased its acceptance due to the economic advantages that it presents when compared to its counterpart, the traditional method. This can be attributed to the fact that the empirical method provides an appropriate design where the deck withstands stress not only due to the steel reinforcement but to an implicit arching membrane stress set-up as an effect of the lateral restraint surrounding the deck slab known as Compressive Membrane Action (CMA).

It has been proved through research that most design codes underestimate the strength of laterally restrained slabs. However, there is …

The Role Of Neurotensin Receptors On Visceral Pain And Activity Levels In Mice., Christopher J. Walker

UNF Graduate Theses and Dissertations

This study examines the effects of neurotensin (NT) receptor sites on the sensation of visceral pain. Previous work by researchers has found, through the use of NT analogs, that visceral pain is closely associated with NT receptor 2 (NTSR2). This study tested 70 genetically modified mice. The mice were either missing NTSR1, NTSR2, or were wild-type (WT) mice that were not missing any NT receptors. The mice were injected intraperitoneally with either saline or acetic acid then observed for a 60 minute period and writhing behavior was recorded. Twenty four hours later activity levels were recorded in the open field …

Habitat Value Of Restored Intertidal Shoreline For Fish And Macrobenthic Communities In Northeast Florida, Shannon K. Dunnigan

UNF Graduate Theses and Dissertations

Oyster reefs are declining worldwide, as well as the economic and ecological value of oysters to their respective systems. Numerous restoration efforts have been undertaken in hopes of re-establishing these shellfish populations. This study evaluated a restoration project within the Guana Tolomato Matanzas estuary in northeast Florida, U.S.A., to investigate community structure as well as seasonal patterns in species abundance and diversity of juvenile fish and benthic macrofauna within restored and unrestored intertidal habitats along the Guana Peninsula. The first objective was to determine whether the artificially created reefs provided similar quantity and diversity of benthic macrofauna as adjacent unrestored …

Self-Monitoring And Romantic Relationships: Individual Differences In Romantic Jealousy, Tiffany Lucille Andolina

UNF Graduate Theses and Dissertations

To extend the research on self-monitoring and romantic relationships, we explored the connection between self-monitoring and romantic jealousy using a between-subjects design. We hypothesized high self-monitors (like men) would find sexual infidelity more distressing than emotional infidelity, whereas low self-monitors (like women) would find emotional infidelity more distressing than sexual infidelity. Participants completed the 25-item Self-Monitoring Scale (Snyder, 1974) and 6 hypothetical infidelity scenarios (Buss et al., 1999). To statistically control for third variables, participants also completed the 11-item Sociosexual Orientation Inventory (Gangestad & Simpson, 1991). Although we found a main effect for self-monitoring in romantic jealousy, these results did …

Integrating Security Into The Undergraduate Software Engineering Curriculum, Robert Evans

UNF Graduate Theses and Dissertations

This research included a thorough examination of the existing software assurance or what is commonly called software security knowledge, methodologies and what information security technologies is currently being recommended by the information technology community. Finally it is demonstrated how this security knowledge could be incorporated into the curriculum for undergraduate software engineering.

An Exploration Of The Wheel-Induced Feeding-Suppression, Stephen Benjamin Peckham

Theses and Dissertations (Comprehensive)

Anorexia nervosa is an enigmatic human condition typified by food-restriction that is often accompanied by extensive exercise. This has been modeled in rats in the wheel-induced feeding-suppression (WIFS) model. In this model, animals are given access to a running-wheel, which induces a volitional drop in food-consumption. Short periods of wheel access have induced a feeding-suppression which is effectively reversed by chlorpromazine administration (Adams et al., 2009). Recent attempts at replicating Adams et al.’s (2009) feeding-suppression have, however, been unsuccessful (Peckham et al., 2013). These attempts raised questions as to whether or not the existing methodology is most effective at suppressing …

Use Of Ibm Collaborative Lifecycle Management Solution To Demonstrate Traceability For Small, Real-World Software Development Project, Lovelesh Chawla

UNF Graduate Theses and Dissertations

The Standish Group Study of 1994 showed that 53 percent of software projects failed outright and another 31 percent were challenged by extreme budget and/or time overrun. Since then different responses to the high rate of software project failures have been proposed. SEI’s CMMI, the ISO’s 9001:2000 for software development, and the IEEE’s JSTD-016 are some examples of such responses. Traceability is the one common feature that these software development standards impose.

Over the last decade, software and system engineering communities have been researching subjects such as developing more sophisticated tooling, applying information retrieval techniques capable of semi-automating the trace …

Molecular Identification And Functional Characteristics Of Peptide Transporter 1 (Pept1) In The Bonnethead Shark (Sphyrna Tiburo), Hannah Hart

UNF Graduate Theses and Dissertations

Many elasmobranchs are considered top predators with worldwide distribution, and in general these fish play an important role in the transfer of energy from the lower to the upper trophic levels within the marine ecosystem. Despite this, little research has been done regarding the rates of prey ingestion, digestion, and the processes of energy and nutrient absorption. Specifically understudied is enzymatic digestion within the intestinal brush border, which functions to break down macromolecules into smaller subunits for luminal absorption across the gastrointestinal epithelium. Given their carnivorous diet, the present study sought to expand knowledge on nutrient intake in elasmobranchs by …

The Perceptions Of Black Teachers Regarding Their Decision To Teach And Satisfaction With Their Work Experiences In Predominantly White K-12 Schools, Stephen Richardson

UNF Graduate Theses and Dissertations

The purpose of this study was to examine the perceptions of Black teachers regarding their decision to teach and the satisfaction with their work experiences in predominantly White K-12 schools. A total of 118 teachers who were identified as Black and as employees of a predominantly White school were invited to complete a survey via email. A total of 56 did in fact respond. Of that 56, only 51 respondents provided enough usable data (which is defined as a survey completed in full). The data, which came from a Perceptions Survey, meant to report levels of job satisfaction as it …

Misinformation And Need For Cognition: How They Affect False Memories, Lilyeth Antonio

UNF Graduate Theses and Dissertations

The purpose of this study was to gain a better understanding of false memories and Need for Cognition (NFC). The relationship was examined using a typical misinformation paradigm where participants viewed a video clip which depicted a museum burglary and were later presented with an auditory narrative that contained misleading information about the video they previously saw. Half of the participants were exposed to warnings of misinformation. Additionally, the effect of question type (e.g., central, peripheral, and neutral) was taken into account. A main effect for NFC was found indicating that high NFC individuals had fewer false memories for the …

Sindbis Virus Entry Of Mosquito Midgut Epithelia...Is Nramp Involved?, Florence Yi Ting Chim

UNF Graduate Theses and Dissertations

Sindbis virus (SINV) is an arthropod-borne Alphavirus in the family Togaviridae. Sindbis virus has a broad host range that includes avian, mammalian, and human hosts; therefore, its receptor(s) is/are highly conserved. When the mosquito imbibes a viremic blood meal, the virus infects the midgut cells, disseminates into the hemolymph, and eventually infects the salivary glands. The midgut is an organ of transmission and the virus must overcome the midgut epithelia infection- and escape-barriers. Sindbis virus infection is determined by the chance collision of the glycoproteins with a compatible receptor. Research has supported the involvement of high-affinity laminin receptor and heparan …

Stepping Out Of The Dirt: A Case Study Of The Impact Of Reflective Expressive Writing On Male Teens Recently Released From A Closed Custody Facility, April D. King Ms.

Theses and Dissertations (Comprehensive)

When researching the topic of at-risk youth and reflective expressive writing there is little literature to be found. The limited literature that exists with regards to reflective expressive writing is not geared toward a population of at-risk teens (Burton & King, 2004). Although there is literature on alternative programming for at-risk youth (McKee & MacDonald, 2006), very little discusses reflective writing. The research question being addressed is: What is the impact of reflective expressive writing on male teens that have recently been released from a closed custody facility? The aim of this study is to present rich descriptive narratives that …

Stories Of Challenge And Resilience: The Impact Of Ecological Factors On The Lived Experiences Of Low Income, Urban Young Adults Living With Hiv/Aids, Kathleen Anne Thoma

UNF Graduate Theses and Dissertations

Transitioning to adulthood is a challenging experience for all young adults, but especially for those who are living with HIV/AIDS and residing in low income, urban areas. Young adults, particularly those who live in low income, urban areas, have the highest rate of new HIV cases among all age groups in the United States. The purpose of this study was to examine the lived experiences of a purposive sample of young adults living with HIV/AIDS who resided in a selected low income, urban area in order to better understand how ecological and health factors presented opportunities and challenges for resilience …

Family Stressors And Problem Behaviors Of At-Risk Elementary School Girls: A Latent Class Analysis, Cameron M. Perrine

UNF Graduate Theses and Dissertations

In order to obtain a closer look into the relationships between an at-risk populations’ family stressors and future school problem behaviors, a Latent Class Analysis (LCA) of family stressor variables was performed on at-risk elementary school girls from Health Zone 1. Participants were 308 girls with a mean age of 8.79 years. The dataset was inherited from the Delores Barr Weaver Policy Center and analyses were run to uncover latent classes of family stressors. Class membership was then utilized to predict future behavioral referrals and suspensions from school. A total of three classes emerged from the LCA: “Exposure to Trauma”; …

Role Tension In The Academy: A Philosophical Inquiry Into Faculty Teaching And Research, Nicolas Michaud

UNF Graduate Theses and Dissertations

This dissertation seeks to understand the conjunction of faculty roles as teachers and as researchers. This understanding is pursued through philosophical analysis. Discourse ethics, in particular, is used as a framework by which to best understand the roles played by faculty and if the roles of teacher and researcher are, in fact, commensurable. The purpose of the work is two-fold: 1) to develop a construct that may be used by future researchers to better understand the roles played by faculty, and 2) to suggest a best-construct that enables future researchers to propose how actual lived roles should be instantiated in …

The Perspectives Of Preschool Teachers On Instructional Coaching, Melanie Smith Clough

UNF Graduate Theses and Dissertations

The purpose of this study was to examine how teachers describe instructional coaching. Instructional coaching has become a leading form of professional development in educational settings, yet there is a lack of empirical evidence that explains and clarifies it. One aspect of instructional coaching that is not known is how teachers perceive it. In order to gain understanding about instructional coaching, the perspectives of the teachers could provide valuable insight to benefit those involved in the practice. Instructional coaching and the schools where coaching takes place are complex in nature. Through the use of one-on-one interviews, an in-depth look at …

Gender Differences In Low Back Pain And Self-Reported Muscle Strengthening Activity Among U.S. Adults, Albatool H. Alnojeidi

UNF Graduate Theses and Dissertations

Objectives: We sought to examine the gender differences between low back pain (LBP) and muscle strengthening activity (MSA) in U.S. adults (≥20 years of age).

Background: Low back pain is a well-known medical condition that has been shown to impact quality of life and professional productivity. It also adds to the financial burden of our healthcare system by augmenting medical treatment costs. Muscle strengthening activity is a recognized method to prevent and treat LBP. Studies analyzing the relationship between MSA and LBP by gender have produced mixed results.

Methods: The sample (n=12,721) included participants in the 1999-2004 National …

Dune And Coastal Evolution In Isla Salamanca National Park, Colombia, Juan Felipe Gómez

Theses and Dissertations (Comprehensive)

This project analyzes natural variables influencing the coastal and dune evolution in Isla Salamanca National Park (ISNP), a biosphere reserve and Ramsar site located in Colombia, on the Caribbean coast. Since at least the early 1950s, the park has been affected by eroding trends along most of the shoreline. Particularly, most modern dunes are located close to the coastline, forming scarped dunes regularly affected by storm wave-action.

The trends through time of rain, bathymetry and coastline changes during the last six decades were studied through statistical analysis, mapping of landscape features, and satellite images and historical aerial photograph …

Examination Of Field Scale Hydrological Processes Under Three Different Tillage Methods In Southern Ontario: Conventional Till (Ct); Modified Till (Mt); And No Till (Nt), Ian Martin

Theses and Dissertations (Comprehensive)

In the wake of the severe algal blooms of 2011 and 2013 in the Great Lakes, international governing bodies such as the United Nations, are advocating for increased studies on nutrient dynamics within agricultural systems. Understanding farm contributions to nutrient loads entering the Great Lakes involves quantifying nutrient export from different tillage practices common in the Great Lakes basin, which include no-till (NT), conventional till (CT) and modified tillage (MT). Understanding differences in nutrient export from different tillage practices may well be related to structural differences in the upper portion of the vadose zone which impact infiltration, soil moisture and …

Influence Of Planning Resources On Gait Control In Parkinson’S Disease, Frederico P. Faria

Theses and Dissertations (Comprehensive)

Movement disturbances in individuals with Parkinson’s disease (PD) have been associated with difficulties to plan complex actions. Performance of simple and complex actions overloads resources for individuals with Parkinson’s disease (PD). However, it is unclear if central resources required to plan gait adjustments while walking exacerbate gait disturbances of patients with PD. More specifically, it is unclear how gait impairments, sensory processing, and the dopaminergic system influence the load on processing resources (e.g. cognitive load) during the planning of step modifications. In order to investigate the relative influence of these factors on cognitive load and its impact on gait control, …