The Influence Of Sea-Level Rise On Salinity In The Lower St. Johns River And The Associated Physics, Teddy Mulamba

UNF Graduate Theses and Dissertations

The lower St Johns River is a low-gradient coastal river with tidal hydrodynamics that remain active from the Atlantic Ocean through to the upstream end of Lake George (river km 200). Salinity in the lower St Johns River is spatially and temporally variable, whereby the salinity distribution is driven primarily by the combination of ocean processes of tides and storm surges and hydrological processes of watershed runoff. This study examines the probability distributions and modes of behavior of salinity for present-day conditions using data, numerical modeling and eigen-analysis. The hypothesis is that long-term changes (decadal scale) in the ocean processes …

Vulnerabililty Analysis Of Multi-Factor Authentication Protocols, Keith Garrett

UNF Graduate Theses and Dissertations

In this thesis, the author hypothesizes that the use of computationally intensive mathematical operations in password authentication protocols can lead to security vulnerabilities in those protocols. In order to test this hypothesis: 1. A generalized algorithm for cryptanalysis was formulated to perform a clogging attack (a formof denial of service) on protocols that use computationally intensive modular exponentiation to guarantee security. 2. This technique was then applied to cryptanalyze four recent password authentication protocols, to determine their susceptibility to the clogging attack. The protocols analyzed in this thesis differ in their usage of factors (smart cards, memory drives, etc.) or …

Challenging The Efficient Market Hypothesis With Dynamically Trained Artificial Neural Networks, Kevin M. Harper

UNF Graduate Theses and Dissertations

A review of the literature applying Multilayer Perceptron (MLP) based Artificial Neural Networks (ANNs) to market forecasting leads to three observations: 1) It is clear that simple ANNs, like other nonlinear machine learning techniques, are capable of approximating general market trends 2) It is not clear to what extent such forecasted trends are reliably exploitable in terms of profits obtained via trading activity 3) Most research with ANNs reporting profitable trading activity relies on ANN models trained over one fixed interval which is then tested on a separate out-of-sample fixed interval, and it is not clear to what extent these …

An Examination Of The Perceptions Of Elementary School Principals, General Education Teachers, And Special Education Teachers About Supportive Inclusion Practices And Processes, Ahmed Afia Laroussi

UNF Graduate Theses and Dissertations

Abstract

This dissertation focuses on the perceptions of the school principals, general education teachers, and special education teachers about practices and processes that support the inclusion program. High stake holders in schools and parents of students with disabilities are advocating for the improvement of the quality of the inclusion as an academic service delivery model. This study is significant because the number of students with disabilities being placed in the general education classroom continues to increase, and the federal and the state mandates are holding school districts and schools accountable for all students’ academic performance, including students with disabilities. A …

Memory Traces: Analyzing Sacred Space At Five Mesoamerican Sites, Yumi Park Huntington

Art Inquiries

Book review of Memory Traces: Analyzing Sacred Space at Five Mesoamerican Sites, edited by Cynthia Kristan-Graham and Laura M. Amrhein.

Severity Of Spinal Cord Injury Influences Diffusion Tensor Imaging Of The Brain, Michael B. Jirjis, Aditya Vedantam, Matthew D. Budde, Benjamin Kalinosky, Shekar N. Kurpad

Biomedical Engineering Faculty Research and Publications

Background: The purpose of this study was to determine whether DTI changes in the brain induced by a thoracic spinal cord injury are sensitive to varying severity of spinal contusion in rats.

Methods: A control, mild, moderate, or severe contusion injury was administered over the eighth thoracic vertebral level in 32 Sprague-Dawley rats. At 11 weeks postinjury, ex vivo DTI of the brain was performed on a 9.4T Bruker scanner using a pulsed gradient spin-echo sequence.

Results: Mean water diffusion in the internal capsule regions of the brain and pyramid locations of the brainstem were correlated with motor function (r …

Automated Selection Of The Optimal Cardiac Phase For Single-Beat Coronary Ct Angiography Reconstruction, Daniel Stassi, S. Dutta, H. Ma, A. Soderman, D. Pazzani, E. Gros, D. Okerlund, Taly Gilat-Schmidt

Biomedical Engineering Faculty Research and Publications

Purpose: Reconstructing a low-motion cardiac phase is expected to improve coronary artery visualization in coronary computed tomography angiography (CCTA) exams. This study developed an automated algorithm for selecting the optimal cardiac phase for CCTA reconstruction. The algorithm uses prospectively gated, single-beat, multiphase data made possible by wide cone-beam imaging. The proposed algorithm differs from previous approaches because the optimal phase is identified based on vessel image quality (IQ) directly, compared to previous approaches that included motion estimation and interphase processing. Because there is no processing of interphase information, the algorithm can be applied to any sampling of image phases, …

Assessing The Spatial Relationship Between Fixation And Foveal Specializations, Melissa A. Wilk, Adam M. Dubis, Robert F. Cooper, Phyllis Summerfelt, Alfredo Dubra, Joseph Carroll

Biomedical Engineering Faculty Research and Publications

Increased cone photoreceptor density, an avascular zone (FAZ), and the displacement of inner retinal neurons to form a pit are distinct features of the human fovea. As the fovea provides the majority of our vision, appreciating how these anatomical specializations are related is important for understanding foveal development, normal visual function, and retinal disease. Here we evaluated the relationship between these specializations and their location relative to the preferred retinal locus of fixation (PRL). We measured foveal pit volume, FAZ area, peak cone density, and location of the PRL in 22 subjects with normal vision using optical coherence tomography and …

Motor Output Variability Impairs Driving Ability In Older Adults, Neha Lodha, Hwasil Moon, Changki Kim, Tanya Onushko, Evangelos A. Christou

Biomedical Engineering Faculty Research and Publications

Background: The functional declines with aging relate to deficits in motor control and strength. In this study, we determine whether older adults exhibit impaired driving as a consequence of declines in motor control or strength.

Methods: Young and older adults performed the following tasks: (i) maximum voluntary contractions of ankle dorsiflexion and plantarflexion; (ii) sinusoidal tracking with isolated ankle dorsiflexion; and (iii) a reactive driving task that required responding to unexpected brake lights of the car ahead. We quantified motor control with ankle force variability, gas position variability, and brake force variability. We quantified reactive driving performance with a combination …

The Cultural And Rhetorical Elements Of American Picaresque, Cory James Dahlstrom

Dissertations and Theses @ UNI

The picaresque is a literary genre with a long and rich history. Although protean in nature, it is essentially the fictional autobiography of a likeable delinquent or rogue, who survives a series of adventures and a life of hardships by his or her wits and affinity for trickery. Stemming from a long line of tropes dating back to Greek mythology, the picaresque comes into its own fruition towards the end of the Spanish Golden Age with the anonymous publication of Lazarillo de Tormes (1554). Since then, the antihero of the picaresque, the picaro, has become a literary figure across a …

Using One-To-One Computing For Differentiated Instruction In Iowa: An Investigation Of The Impact Of Teachers' Perceptions Of Teaching And Learning, Jodi A. Bermel

Dissertations and Theses @ UNI

The 1983 seminal work entitled A Nation at Risk recommended that all high school graduates be proficient in the Five New Basics: English, mathematics, science, social studies, and computer science. To address the No Child Left Behind mandates, educators and administrators are evaluating the theory and practice of Differentiated Instruction (DI). One-to-one computer initiatives became an element of DI strategy due to the well-documented advantages in the use of technology to address individual learning needs. The purpose of this qualitative case study was to examine administrators’ and teachers’ perceptions of using one-to-one computing to differentiate instruction and to identify potential …

A Follow-Up Of Patient Reported Outcomes In Chronic Plantar Heel Pain Participants Treated With Graston Technique: A Mixed Methods Approach, Troy Richard Garrett

Dissertations and Theses @ UNI

Chronic Plantar Heel Pain (CPHP), commonly known as “plantar fasciitis,” is a condition that is estimated to affect 10% of the American population. A treatment for CPHP and other soft tissue overuse conditions that is increasing in popularity is the use of metal instruments for deep tissue massage for 10 minutes, twice a week for six weeks, called the Graston Technique.

The purpose of this study is to longitudinally examine the foot pain and function of participants who received Graston Technique treatment approximately two years before this study. A mixed methods design where quantitatively, three self-reported survey instruments were utilized, …

An Examination Of The Perceptions Of The Iep Process As A Team Plans For The Potential Reintegration Of A Student From An Alternative Setting To The Resident District, Sarah J. Knudsen

Dissertations and Theses @ UNI

The Individuals with Disabilities Education Act (IDEA) of 1990 determined that students with disabilities are to learn in the least restrictive environment (LRE). The IEP team has the responsibility to determine placement that is as non-restrictive as possible and yet appropriate. For students with Emotional Disturbances (ED) the concept of LRE is contentious. The purpose of this research was to investigate the perceptions of IEP team members as to the factors on which decisions are made throughout the IEP process for students with ED as the team planned for reintegration from an alternative setting into the student’s home district. This …

Virtue, Freedom, And The First Amendment, Marc O. Degirolami

Scholarly Articles

The modern First Amendment embodies the idea of freedom as a fundamental good of con- temporary American society. The First Amendment protects and promotes everybody's freedom of thought, belief speech, and religious exercise as basic goods-as given ends of American political and moral life. It does not protect these freedoms for the sake of promoting any particular vision of the virtuous society. It is neutral on that score, setting limits only in those rare cases when the exercise of a First Amendment freedom exacts an intolerable social cost.

Something like this collection of views constitutes the conventional account of the …

Democratizing Startups, Seth C. Oranburg

Scholarly Articles

President Obama signed the Jumpstart Our Business Startups (“JOBS Act”) of 2012 into law to “help entrepreneurs raise the capital they need to put Americans back to work and create an economy that’s built to last.” The goal is to “democratize startups” by making capital available to diverse entrepreneurs in new geographies. Yet the net effect of securities regulations and market conditions is the opposite. Startup companies are encouraged to stay private so capital is consolidating in large, mature firms instead of recycling into new startups. Evidence of consolidation is that once-rare “Unicorns” (billion-dollar startups) now number at least 170. …

A Legal Definition Of Leadership: Understanding §3b1.1 Of The Federal Sentencing Guidelines, Marin Roger Scordato

Scholarly Articles

This Article offers a formal legal definition of “leadership” drawn from an unusual quarter: criminal sentencing. Sentencing guidelines that include adjustments based on the extent to which a defendant was a “leader” have spawned hundreds of appellate court cases attempting to develop a thoughtful, workable definition of the term. Reviewing these cases, this Article offers 25 separate characteristics courts have found material to a legal judgment as to whether an individual has been a leader within a criminal enterprise.

Eleven of these characteristics can be organized into three categories, which operate on the boundaries of the leadership concept. The first …

Laudato Si’ And Care For Our Common Home: What Does It Mean For The Legal Profession?, Lucia A. Silecchia

Scholarly Articles

Pope Francis’s recent encyclical, Laudato Si’ (“Praised Be You”), has been one of the most widely anticipated papal documents in recent memory. It has also received far more popular commentary than would be expected of a papal encyclical. Yet, while Laudato Si’ has been widely dubbed “the climate change” encyclical, it is far broader than that. It is also a far-reaching analysis of a number of political, economic, social and legal issues, in addition to being an extensive exposition on human duties toward creation.

In the text of this encyclical, there are also some important lessons to be gleaned for …

Public Enforcement Of Patent Law, Megan M. La Belle

Scholarly Articles

Law enforcement in the modern regulatory state is largely a joint enterprise. In areas such as securities, antitrust, civil rights, and environmental law, enforcement responsibilities are allocated between public and private actors. Patent law, on the other hand, is enforced almost exclusively through private lawsuits. Considering patent law's constitutionally mandated public purpose--“to promote the Progress of Science and useful Arts”-- this privatization of patent enforcement is troubling.

In recent years, there has been some movement away from this purely private enforcement scheme for patent law. The Department of Justice and the Federal Trade Commission, for example, have involved themselves in …

Contributions Of Glacier Melting To The Upper Watershed Of The Pita River, Ecuador, Teresa Munoz Martinez

Dissertations, Master's Theses and Master's Reports

Evidence suggests that a changing global climate is accelerating glacial retreat around the world. However, there are not many studies that help to understand the influence of climate change on glaciers in the tropical Andes. In many Andean countries, populations use the water that come from the high altitude mountains, especially mountains that are ice covered. Glacial reduction minimizes water resource availability. This report focuses on better understanding the relationship between glacier meltwater, surface water runoff, and the groundwater flowing into and under the Pita River upper watershed, which crosses the base of the northeast foothills of the Cotopaxi volcano. …

Learning To Notice And Use Student Thinking In Undergraduate Mathematics Courses, Anna Pascoe

Dissertations, Master's Theses and Master's Reports

The goal of this study was to evaluate the outcomes of an intervention focused on developing mathematics graduate teaching assistants’ skills of noticing and effectively responding to instances of student mathematical thinking that have significant potential to further students’ learning. Four mathematics graduate teaching assistants participated in a semester-long intervention in which video of undergraduate mathematics lessons was individually analyzed and then discussed collectively with the researcher on a weekly basis. The MOST Analytic Framework (Leatham, Peterson, Stockero, & Van Zoest, 2015; Stockero, Peterson, Leatham, & Van Zoest, 2014) was introduced as a tool to aid in the analysis and …

Two Problems Of Gerhard Ringel, Adrian Pastine

Dissertations, Master's Theses and Master's Reports

Gerhard Ringel was an Austrian Mathematician, and is regarded as one of the most influential graph theorists of the twentieth century. This work deals with two problems that arose from Ringel's research: the Hamilton-Waterloo Problem, and the problem of R-Sequences.

The Hamilton-Waterloo Problem (HWP) in the case of C_m-factors and C_n-factors asks whether K_v, where v is odd (or K_v-F, where F is a 1-factor and v is even), can be decomposed into r copies of a 2-factor made entirely of m-cycles and s copies of a 2-factor made entirely of …

Comparison Of Different Seismic Filtering Techniques On Prestack Inversion For Penobscot Area-Nova Scotia, Omer Emre Uygun

Dissertations, Master's Theses and Master's Reports

The goal of this study is to compare three different type of seismic filtering according to their inversion results and their quality of data improvements. To do this bandpass filter, Inverse Q, and Radon transform are applied to the original NMO corrected pre-stack data from Nova-Scotia offshore Canada.

The seismic data used was provided as pre-stack data of generally good quality. The test for quality of data improvement comes from the results of inversion based on different types of filtering performed on the pre-stack gathers.

Bandpass filter, Inverse Q, and Radon transform are applied to the migrated prestack data, over …

Modeling Spring Catchment Discharge: A Case Study Of Candela, Panama, Central America, Jordan P. Van Sickle

Dissertations, Master's Theses and Master's Reports

Where the proper geological and hydrological conditions exist, natural springs have provided a reliable source of clean water to mankind for eons. Changing climates and land development can negatively impact spring source replenishment and threaten their reliability as a source of water. In the face of prospects of diminishing supplies and increasing population demands, community leaders question whether and how to invest in development for enhancing sustainability and protecting water quality, causing water managers to dispute their reliability given decreasing flows. Springs located in the rugged jungle of western Panama serve as the primary water supply for many indigenous communities, …

Reservoir Estimation In The Penobscot 3d Seismic Volume Using Constrained Sparse Spike Inversion, Offshore Nova Scotia, Canada, Mengchu Xiao

Dissertations, Master's Theses and Master's Reports

The Penobscot study area is located offshore Nova Scotia, Canada. There are two wells, which penetrate the highest potentially commercial bodies in the Abenaki Formation. In order to investigate the potential for locating additional hydrocarbon reservoirs, well log data was used and the Penobscot 3D seismic dataset was analyzed using Constrained Sparse Spike Inversion. From the well log data, low GR and SP values are an indication of a permeable sand layer, which provides the target zone in this study. Impedance – porosity crossplots gave the relationship between impedance and porosity, where a low impedance sand layer is correlated with …

An Analysis Of Stakeholders Communication In Collaborative Software Development Projects, Wei Zhang

Dissertations, Master's Theses and Master's Reports

Software development is a multidisciplinary collaboration involving many stakeholders. However, existing software development processes exhibit many issues related to that collaboration. Because prior research on stakeholder analysis and teamwork revealed the importance of communication, this study analyzed stakeholder communication with reference to team activities as a social and cognitive process. The study’s goal was to understand the collaboration process during software development and to delineate factors that influence this process. We focused on communication between the software developers and their clients during the requirements gathering phase, the team process, and the inter-team and interdisciplinary collaboration, in particular between software engineers …

Ethnobotany, Economics, And Cultural Significance Of Traditional Hat Making In Two Districts Of Central Panama, Sam Clair

Dissertations, Master's Theses and Master's Reports

Panamanian sombreros are made from a palm-like tropical grass called Carludovica palmata. In Panama, there are two distinct styles of sombreros: Pintado and Capireño. While several other plants are used in the traditional Pintado, the Capireño is made entirely from the dried fiber of C. palmata. Both sombrero styles are woven by rural people, who are for the most part subsistence farmers. Formal employment is scarce in rural Panama, and so are incomes for rural inhabitants. Sombrero weaving is one small industry that can earn money for both men and women.

The purpose of this study was to document …

Wireless Implantable Magnetoelastic Sensors And Actuators For Biomedical Applications, Andrew Derouin

Dissertations, Master's Theses and Master's Reports

Magnetoelastic sensors represent a low-cost wireless and battery-less method for monitoring parameters in embedded or implanted applications; however, some limitations still exist preventing their commercial implementation. Presented in this work are a variety of studies that are aimed at improving the feasibility of magnetoelastic materials for sensing and actuating applications. Magnetoelastic resonant sensors of non-standard geometries were investigated to determine if geometry could play a role on the sensitivity of the sensor response to mass loading. It was shown that a significant increase in sensitivity could be achieved by using triangular sensors rather than standard rectangular strips. A method for …

Evaluation Of Social License For The Forest Products Industry In Houghton County, Michigan, Will Lytle

Dissertations, Master's Theses and Master's Reports

This research investigates how the local community grants social license to the forest products industry in Houghton County, Michigan. Interviews were conducted with industry and community stakeholders using a snowball sampling method to understand perspectives on the social license continuum. The viability of supply chains and individual industry sectors associated with forest resources in the county are largely governed by macroeconomics. However, there is a very local component that allows individual corporations to operate within the community. The data analysis, based on the interviews, focuses on understanding local perceptions of natural resource management and community relations. The results reflect social …

Energy Justice And U.S. Energy Policy: Case Study Applications Exploring U.S. Energy Policy Through An Energy Justice Framework, Emily Prehoda

Dissertations, Master's Theses and Master's Reports

This thesis presents three examples of U.S. energy policy and demonstrates how these policies violate the principles of energy justice. First, requiring only Federal agencies to obtain a percentage of energy production from renewables violates the distributive energy justice principle through a lack of a federal renewable energy policy which distributes the potential for unequal electrical grid failure to populations. Second, U.S. energy policy violates the procedural energy justice principle through inequitable participation and poor knowledge dissemination that, in some cases, contributes to stagnant renewable targets during the decision-making process and inequitable distribution of the benefits associated with renewable energy …

Usft 2016-2017 Usf Libraries Annual Report, Usf Libraries

Library Annual Reports

No abstract provided.