Digital Commons Network^™

Analysis Of Bfsa Based Anti-Collision Protocol In Lf, Hf, And Uhf Rfid Environments, Varun Bhogal

UNF Graduate Theses and Dissertations

Over the years, RFID (radio frequency identification) technology has gained popularity in a number of applications. The decreased cost of hardware components along with the recognition and implementation of international RFID standards have led to the rise of this technology.

One of the major factors associated with the implementation of RFID infrastructure is the cost of tags. Low frequency (LF) RFID tags are widely used because they are the least expensive. The drawbacks of LF RFID tags include low data rate and low range. Most studies that have been carried out focus on one frequency band only. This thesis presents …

Effects Of Elevated Salinity And Oxidative Stress On The Physiology Of The Toxigenic Cyanobacterium Microcystis Aeruginosa, Billy Christopher Warhurst

UNF Graduate Theses and Dissertations

Harmful algal blooms (HABs) are found worldwide, particularly in places where warm, well-lit, and stagnant waters are common. HABs can have negative effects on aquatic plants and wildlife due to the reduction in light availability associated with turbidity, decrease in O₂ availability, and the production of secondary metabolites that can harm or even prove lethal. Aquatic ecosystems are regularly being affected by elevated salinity because of recent water management strategies, episodes of drought, and salt water intrusion. This research focused on how salinity levels ranging from 0-10ppt affected physiological attributes such as cellular growth and abundance, cell mortality, toxin …

A Hybrid Approach Using Rup And Scrum As A Software Development Strategy, Dalila Castilla

UNF Graduate Theses and Dissertations

According to some researchers, a hybrid approach can help optimize the software development lifecycle by combining two or more methodologies. RUP and Scrum are two methodologies that successfully complement each other to improve the software development process. However, the literature has shown only few case studies on exactly how organizations are successfully applying this hybrid methodology and the benefits and issues found during the process. To help fill this literature gap, the main purpose of this thesis is to describe the development of the Lobbyist Registration and Tracking System for the City of Jacksonville case study where a hybrid approach, …

Due To A Bone Marrow Transplant, Is Loneliness From Hospital Isolation A Predictor Of Health Outcomes, Megan E. Curtis

UNF Graduate Theses and Dissertations

Previous research indicates loneliness affects physiological and quality of life outcomes in oncology populations. However, minimal research has been conducted specifically on bone and blood marrow transplant (BMT) patients (Knight et al., 2013). To further explore this issue, we conducted a preliminary study to examine the relationship of loneliness with quality of life, immunological functioning, and other health indicators at six months post-transplant in BMT patients. The Functional Assessment of Cancer Therapies–BMT (FACT-BMT) was used to measure QOL and the UCLA Loneliness Scale Version 3 was used to assess general loneliness and loneliness experienced during hospitalization. We found that experiencing …

When Thoughts Clash: Self-Compassion And Self-Monitoring As Moderators Of Cognitive Dissonance, Jessica Lyn Sastre

UNF Graduate Theses and Dissertations

Cognitive dissonance occurs when someone engages in a counter-attitudinal behavior that has negative consequences. In the present study whether moderators such as self-monitoring and self-compassion impact the experience of dissonance. Specifically, high self-monitors should experience less dissonance than low self-monitors because of their propensity to alter their opinions based on the social cues around them and not be as attached to their opinions as low self-monitors. Self-compassion may also moderate the dissonance effect in that more self-compassionate individuals may handle the experience of dissonance with more self-kindness and subsequently experience less dissonance than participants with low self-compassion. Participants (N …

The Importance Of Collaboration Between Parents And School In Special Education: Perceptions From The Field, Heather Renee Griffin

UNF Graduate Theses and Dissertations

Each student receiving special education services in the public school system, roughly 6.4 million students, has an Individualized Education Program (IEP) that is mandated by the Individuals with Disabilities Education Improvement Act of 2004 (IDEA). IDEA dictates that a team of people familiar with the student, including the parents, should create the IEP. Unfortunately, research indicates that many parents believe their participation is not welcome. While only a small percentage of parents may actually be dissatisfied with the IEP process, the cost of dissatisfaction is high, further stretching already limited resources that could be better used in the classroom.

The …

No Teacher Left Behind: An Exploration Of The Current Teacher Performance Evaluation System In Florida, Tara C. Haley

UNF Graduate Theses and Dissertations

The use of standardized test scores to hold schools, students, and teachers accountable for their performance has been at the heart of education reform efforts throughout the United States for years. Recent reform efforts have been especially focused on including the standardized testing performance of students into the overall evaluation of teacher effectiveness. In several states throughout the country, including Florida, results from teacher performance evaluations are being used to inform professional development, tenure, retention, termination, and compensation decisions.

The purpose of this study was to explore the teacher performance evaluation system initiated in Florida in 2011 as perceived by …

The Plausibility Of A Slippery Slope: Guantanamo Bay As An Example Of Direct/Indirect Participation In Torture And The Corruption Of Societal Morality, Dominique T N Greene-Sanders

UNF Graduate Theses and Dissertations

Although torture is considered universally reprehensible by law, including international law and human convention, it occurs routinely as an acceptable and efficient method for interrogation and intimidation. The questions that follow are: What kind of person engages in/commits acts of torture? If legalized, how would torture affect morality when an individual can be instrumentally utilized as a mere means-to-an-end? How does torture affect the victim, the torturer, and society as a whole? In order to answer these questions, I will use events at the Guantanamo Bay Detention Center to argue in favor of the plausibility for the concept of a …

Trustworthiness Of Web Services, Britto N. Arockiasamy

UNF Graduate Theses and Dissertations

Workflow systems orchestrate various business tasks to attain an objective. Web services can be leveraged to handle individual tasks. Before anyone intends to leverage service components, it is imperative and essential to evaluate the trustworthiness of these services. Therefore, choosing a trustworthy service has become an important decision while designing a workflow system. Trustworthiness can be defined as the likelihood of a service functioning as it is intended.

Selection of a service that satisfies business goals involves collecting relevant information such as security mechanisms, reliability, performance and availability. It is important to arrive at total trustworthiness, which incorporates all of …

Comparative Study Of C, Java, C# And Jython, Poonam Goyal

UNF Graduate Theses and Dissertations

Comparing programming languages is a common topic among programmers and software developers. With the recent changes in programming standards and continual upgrades in hardware design, many new programming languages are being developed, while existing ones are currently going through several enhancements in terms of design and implementation. In this research, we present a comparative study of four programming languages, C, Java, C#, and Jython, with respect to the following criteria: memory consumption, CPU utilization, and execution time. Each test was performed in a distributed system using TCP sockets with 1, 2, 4 and 8 clients, and on a symmetric multiprocessing …

The Impact Of Student Support Services On Academic Success At A Select Historically Black College And University, Andrea Marie Cummings

UNF Graduate Theses and Dissertations

The purpose of this study was to determine and examine the impact of student support services (SSS) on academic success at a historically black college. The study was grounded in the theoretical framework of Astin’s Input-Environment-Outcome Model (IEO), Scholssberg’s theory of marginality, holistic theory , facilitation theory, and the theory of sensory simulation (Dunn, 2002; Anderson et. al., 2011; Dennick, 2014 and Pritchard, 2013)

A mixed method approach was used to quantify and explicate triangulated data, which included the N-LSSI survey, archival data, and focus group interviews. The N-LSSI survey used a 7-point Likert Scale, and students from The College …

A Hybrid Approach To Music Recommendation: Exploiting Collaborative Music Tags And Acoustic Features, Jaime C. Kaufman

UNF Graduate Theses and Dissertations

Recommendation systems make it easier for an individual to navigate through large datasets by recommending information relevant to the user. Companies such as Facebook, LinkedIn, Twitter, Netflix, Amazon, Pandora, and others utilize these types of systems in order to increase revenue by providing personalized recommendations. Recommendation systems generally use one of the two techniques: collaborative filtering (i.e., collective intelligence) and content-based filtering.

Systems using collaborative filtering recommend items based on a community of users, their preferences, and their browsing or shopping behavior. Examples include Netflix, Amazon shopping, and Last.fm. This approach has been proven effective due to increased popularity, and …

Organizational Development Consulting: A Study Of Expert Consultants' Key Strategies, Mona Vosoughi

UNF Graduate Theses and Dissertations

The present study was conducted to capture the collective voice of expert organizational development consultants. Until now, very few studies have been conducted that take into account the collective voices of organizational development consultants. More specifically, the purpose of the present study is to explore and gain a deeper understanding of the approaches expert organizational development consultants use throughout their engagement with their clients in an attempt to add value to and enhance organizational capacity. To understand the process used by this distinct group of leaders, phenomenological qualitative inquiry was the methodology used to conduct this study. Data were collected …

Predicting Pressure Distribution Between Transfemoral Prosthetic Socket And Residual Limb Using Finite Element Analysis, Rajesh Surapureddy

UNF Graduate Theses and Dissertations

In this study, a non-linear Finite Element (FE) model was created and analyzed to determine the pressure distribution between the residual limb and the prosthetic socket of a transfemoral amputee. This analysis was performed in an attempt to develop a process allowing healthcare providers and engineers to simulate the fit and comfort of transfemoral prosthetics to reduce the number of re-fittings needed for the amputees. The analysis considered the effects of interference due to insertion of the limb into the prosthesis, referred to as donning, and also the effects due to the body weight of the amputee. A non-linear finite …

Shear Strength Parameters Of Sand Fly Ash Cement Mixtures, Oksana Nikolayevna Spears

UNF Graduate Theses and Dissertations

According to a 2012 American Coal Ash Association Coal production Survey Report, US coal fired power plants produced more than 109 million tons of waste that year. Approximately half of this waste is the valuable by-product fly ash. There are three classes of fly ash: cementitious class C and non-cementitious classes F and N. Over half of the fly ash produced is used in the geotechnical/construction industries. Most geotechnical soil stabilization studies using fly ash are focused on controlling shrink-swell potential of clays. This study utilized the less desirable class F fly ash to assess the improvement of shear strength …

Sexual Violence, Law, And Qualities Of Affiliation, Sameena A. Mulla

Social and Cultural Sciences Faculty Research and Publications

No abstract provided.

Evaluation Of Upper Extremity Movement Characteristics During Standardized Pediatric Functional Assessment With A Kinect®-Based Markerless Motion Analysis System, Jacob R. Rammer, Joseph J. Krzak, Susan A. Riedel, Gerald F. Harris

Biomedical Engineering Faculty Research and Publications

A recently developed and evaluated upper extremity (UE) markerless motion analysis system based on the Microsoft® Kinect® has potential for improving functional assessment of patients with hemiplegic cerebral palsy. 12 typically-developing adolescents ages 12-17 were evaluated using both the Kinect-based system and the Shriners Hospitals for Children Upper Extremity Evaluation (SHUEE), a validated measure of UE motion. The study established population means of UE kinematic parameters for each activity. Statistical correlation analysis was used to identify key kinematic metrics used to develop automatic scoring algorithms. The Kinect motion analysis platform is technically sound and can be applied to standardized task-based …

A North American Consortium On Rehabilitation Engineering And Technology For The Individual, Barbara Silver-Thorn, Jessica Lothman, Terence Miller

Biomedical Engineering Faculty Research and Publications

The availability and accessibility of appropriate rehabilitative healthcare, medical technology and treatment is an important national and international issue of particular relevance due to recent national healthcare reform initiatives. The focus of this project was to increase global competencies and awareness among biomedical engineers of the differing rehabilitative healthcare needs in North America via student exchange with consortium institutions in the U.S., Canada and Mexico. The aim was to increase understanding of alternative healthcare delivery systems with respect to technology and interaction with diverse client populations in a clinical setting and to enhance the development and technology transfer of new …

Development Of Leaf Shape And Vein Homologies In Five Species Of The Genus Ipomoea (Convolvulaceae), Austin William Jones

Dissertations and Theses @ UNI

Angiosperm leaves are extremely variable in form while predominantly maintaining the function of the primary photosynthetic organ of the plant. Changes in leaf form can result from myriad physiological processes which may be influenced by ecology, physical stimuli, phylogeny, or other factors. In studying the development of divergent leaf forms among closely related species, conserved morphological elements may be identified that are not apparent in the mature form. The genus Ipomoea (Convolvulaceae) contains over 600 species and a wide range in leaf shapes. Five species, I. purpurea, I. coccinea, I. sloteri, I. quamoclit, and I. cairica show a range in …

Attention-Deficit/Hyperactivity Disorder (Adhd) And Borderline Personality Disorder (Bpd): Examining The Overlapping Features, Co-Occurrence, And Sex Differences, Brittany Lewno

Dissertations and Theses @ UNI

Research connecting Attention Deficit/Hyperactivity Disorder (ADHD) and Borderline Personality Disorder (BPD) is growing. The disorders share several overlapping characteristics, neurological deficits, and similar comorbid disorders. Although these disorders are typically sex-specific, the presence of externalizing and internalizing characteristics may link these disorders. These commonalities have resulted in a developing theory suggesting that a childhood ADHD diagnosis may predict adult BPD symptoms. The current study aimed to test this developing theory. The sample included 175 emerging adults (64.6% female). A demographics measure, the Barkley Adult-ADHD Rating Scale—IV (BAARS-IV), and the Personality Assessment Inventory Borderline Personality Features Subscale (PAI-BOR) were administered in …

An Enhanced Pulse Position Modulation (Ppm) In Ultra-Wideband (Uwb) Systems, Lingxiu Chen

Dissertations and Theses @ UNI

Simplicity, transmission rate, and bit error rate (BER) performance are three major concerns for ultra-wideband (UWB) systems. The main advantage of existing pulse-position modulation (PPM) schemes is simplicity, but their BER performance is poorer than that of an on-off-keying (OOK) modulation scheme, and their transmission rate is lower than that of an OOK scheme. In this research project, I will explore a novel PPM scheme, which can maintain the simplicity of the PPM schemes as well as achieve a BER performance and a transmission rate similar to the OOK scheme. During the research, I will thoroughly investigate the relationship between …

D-Spaces In Infinite Products Of Ordinals, Duncan Wright

Dissertations and Theses @ UNI

William Fleissner and Adrienne Stanley showed that, in finite products of ordinals, the following are equivalent: 1. X is a D-space. 2. X is metacompact. 3. X is metalindel¨of. 4. X does not contain a closed subset which is homeomorphic to a stationary subset of a regular, uncountable cardinal. In this paper we construct a counterexample that shows that this equivalence does not extend to infinite products of ordinals. We also introduce a new property, club-separable, which we show implies D for subsets of ωω1. We hope that club-separable will be able to replace property (4) above in order to …

Understanding The Long-Term Spatiotemporal Dynamics Of The Taimyr Reindeer Herd During The Summer Concentration Period, Matthew D. Cooney

Dissertations and Theses @ UNI

This study was part of a larger research effort devoted to investigation of spatiotemporal patterns and dynamics of the Taimyr Reindeer Herd (TRH) migration under changing climate and environmental conditions. The research aimed to systematize and analyze available historical (archival) data on wild reindeer (Rangifer tarandus L.) migration and ecosystems change in the Taimyr Peninsula, Russia. The summer concentration patterns of the TRH as observed from 1969-2009 were investigated through the utilization of existing and innovative spatioanalytic methods and advanced GIS technologies not previously used to examine R. tarandus migration in the Russian Arctic. The project applied and tested the …

Understanding The Impact Of Vegetation On Surface Roughness Length For Enhancing Wind Resource Characterization In Iowa, Andrei Vladimirovich Kushkin

Dissertations and Theses @ UNI

Wind energy development shows a rapid growth in the United States. This renewable energy source not only mitigates environmental concerns by reducing greenhouse gas emission, but also provides energy independence. Wind is clean and abundant, and is one of the most promising sources of alternative energy. Iowa is among the top wind energy producers in the nation, it is third by installed capacity and first in per capita production. In order to utilize wind resource potential most efficiently, accurate wind resource assessments are required. Changes in the aerodynamic characteristics of a site can have a major influence on the wind …

Depression In Children And Adolescents: The Role Of School Professionals, Emily Dawn Hoerman

Dissertations and Theses @ UNI

Depression in children and adolescents is a significant issue for schools. Research has indicated that most students who see mental health professionals do so within the school setting, indicating a need for effective school-based programs to address mental health issues in the schools. The symptoms of depression and short and long term effects are reviewed. The need for, and necessary components of, a comprehensive mental health system in the school setting is discussed.

Tracking Above- And Below- Ground Seed Persistence And Mortality In A Native Tallgrass Prairie Restoration, Carmen Pellish

Dissertations and Theses @ UNI

The large cost of seed and low seedling establishment rates make restoring native tallgrass prairies expensive and difficult. Tallgrass prairie restorations typically achieve seedling emergence rates of only 10%. This begs the question of what happens to the remaining 90% of seeds that do not emerge as seedlings. This thesis sought to assess or quantify the importance of seed predators and death by microorganisms or to senescence on seed survival and seedling establishment within a newly planted native tallgrass prairie restoration under typical restoration conditions. I hypothesized that small vertebrate seed predators would play be detrimental to overall seedling emergence …

The Environmental Performance Of Biobased Resin Within Phenolic-Urethane Nobake Binders: A Feasibility Study, Ian David Morgan Williams

Dissertations and Theses @ UNI

The objectives of this research were to investigate the discovery and development of a biobased nobake binder resin for use within the foundry industry toward improved energy efficiency and environmental performance. The performance of polysaccharides within biobased resins was evaluated using industry-accepted methods and standards such as cure rate, tensile-strength development, and casting performance based upon step cone core results. Biobased nobake resins comprised of polysaccharide raw materials cure at a rate that is comparable to conventional nobake sand binders. Upon reaching stripping time, the development of biobased resin reveals a rapid increase in tensile strength, reaching 80% of its …

Developing Rating Curves In A Small Iowa Watershed To Evaluate Nutrient Loading In Streams, Jennifer Mary Shepeck

Dissertations and Theses @ UNI

Dry Run Creek, a tributary to the Cedar River in northeast Iowa, is a watershed under high pressure from the surrounding region. With its headwaters located in farm fields and urban drainage ditches, it is subject to flash flooding and erosion and is on the DNR’s list of impaired waters. Dry Run Creek is similar to other small watersheds across eastern Iowa. As tributaries to the larger rivers that eventually flow into the Mississippi River and then to the Gulf of Mexico, they are significant contributors to the nutrient loading causing the hypoxia in the Gulf. The purpose of this …

The Effect Of Soft Tissue Oscillation Therapy On The Management Of Pain Associated With Delayed Onset Muscle Soreness, Jenifer Ann Shoultz

Dissertations and Theses @ UNI

Context: Soft tissue oscillation therapy is utilized in the medical profession with limited research to support its use. This study evaluates the effectiveness of soft tissue oscillation therapy on musculoskeletal pain associated with DOMS, among a healthy, physically active population. Objective: Evaluate the efficacy of soft tissue oscillation therapy compared to a placebo in the management of pain associated with musculoskeletal injury. Design: Experimental Crossover, Repeated Measure Design. Participants: Thirty physically active volunteers with a mean age 21.30 ± 1.47. Methods: Participants were induced with delayed onset muscle soreness to their elbow flexors of the non-dominant arm. Participants were randomly …

Intraindividual Personality Change: Situational Influences, Patterns Of Change, And Frequency-Based Measurement, Carol Tweten

Dissertations and Theses @ UNI

A large amount of research supports the idea that little change in personality occurs over time (e.g., Caspi & Roberts, 2001). However, changes in an individual’s personality across different situations, known as intraindividual, or within-person, variability, has not received nearly as much empirical attention, in part due to the difficulties inherent in measuring personality across situations. The present study evaluated a measure of within-person variability called frequency-based measurement by comparing it with situational personality expression. The study involved two phases: a one-time measure of trait personality using frequency-based measurement and a five day experience sampling (ESM) study involving repeated measures …