Digital Commons Network^™

Developing An In-Season Predictor Of Commercial Landings For Quota Monitoring In The U.S. Virgin Islands, Mary Janine Vara

USF Tampa Graduate Theses and Dissertations

The lack of timely reporting of commercial fisheries landings interferes with effective management of fisheries in United States Virgin Islands (USVI). Federal law requires that landings be limited to prevent annual catch limits (ACLs) from being exceeded. Previous attempts to predict total landings have used historic data from prior fishing seasons to predict future landings rather than leveraging available in-season data to provide a more real-time prediction of landings. This study presents an in-season model that predicts total landings using partial reports from the current fishing year. This estimate of total landings, including error bounds around that estimate, can then …

Hermes, Technical Communicator Of The Gods: The Theory, Design, And Creation Of A Persuasive Game For Technical Communication, Eric Walsh

USF Tampa Graduate Theses and Dissertations

For my thesis, I have undertaken the creation of a persuasive game to advance a particular argument of the way that work is performed in the field of technical communication. Designed using procedural rhetoric, with an attention to aesthetics, fun, and the qualities that make games viable pedagogical tools, my game has been programmed using HTML5 and JavaScript, and made freely available online at RhetoricalGamer.com. This written document is meant to serve as a supplement to the game, providing a rationale for the use of games in education and in technical communication; a definition of procedural rhetoric and the necessary …

Leges, Plebiscita, Et Rogationes: Democratization And Legislative Action, 494 - 88 Bc, Eric Wolters

USF Tampa Graduate Theses and Dissertations

This study intends to analyze the importance of institutional trust in the process of democratization. In this particular case, the period from 494 to 88 BC in the Roman republic is examined. The theories of Charles Tilly and Robert Putnam are utilized to more deeply examine the concepts and manifestations of trust and democratization. Using the ideas and theories of these authors together provides a unique insight into the means by which a population comes to trust that government is responsive, and further comes to expect increased responsiveness in the future. Institutional trust as an element of mutually binding consultation …

An Examination Of Motives, Experiences, And Behaviors Of Mmorpg Players, Theresa Lynn Woods

USF Tampa Graduate Theses and Dissertations

Massively multiplayer online role-playing games (MMORPGs) are growing in popularity and use worldwide. This study seeks to explore the motivations and experiences of MMORPG players through an extensive online survey with more than a thousand participants (n=1,422). The findings support a complex relationship between the variables, including the direct effects of motivations and flow on the time invested by players in MMORPG play, as well as the mediated effects of motivation via flow. Causal relationships are examined in addition to the significance of direct and indirect effects on frequency of play, yielding several significant results, including (1) the overwhelming importance …

Troubled Waters: Georgia, Florida And Alabama's Conflict Over The Waters Of The Acf River Basin, Johnny King Alaziz Wong

USF Tampa Graduate Theses and Dissertations

Since 1989, the co-riparian States of Georgia, Florida and Alabama have been locked in an overt and institutionalized conflict to secure access to the waters of the Apalachicola-Chattahoochee-Flint (ACF) River Basin. In 1997, in an effort to end this interstate conflict which had earned the reputation as the longest water conflict in U.S. history, public officials at the federal and state scales agreed to suspend all pending litigation against one another and concurrently deployed a dispute resolution mechanism, known as `compact negotiations,' in the hope of equitably allocating the waters of the ACF Basin. Despite proclamations by public officials, exclaiming …

Asymmetric Unilateral Transfemoral Prosthetic Simulator, Tyagi Ramakrishnan

USF Tampa Graduate Theses and Dissertations

amputation, which includes reduced force generation at the knee and ankle, reduced control of the leg, and different mass properties relative to their intact leg. The physical change in the prosthetic leg leads to gait asymmetries that include spatial, temporal, or force differences. This altered gait can lead to an increase in energy consumption and pain due to compensating forces and torques. The asymmetric prosthesis demonstrated in this research aims to find a balance between the different types of asymmetries to provide a gait that is more symmetric and to make it overall easier for an amputee to walk.

Previous …

Long-Term Mindfulness Meditation: Anxiety, Depression, Stress And Pain, Is There A Connection For Public Health?, Sara Spowart

USF Tampa Graduate Theses and Dissertations

Long-term mindfulness meditation for anxiety, depression, pain and stress has not been adequately investigated in academic literature. The majority of literature in relation to mindfulness meditation and these ailments concerns Kabat-Zinn's Mindfulness-Based Stress Reduction (MBSR) program. This is a short-term 6-8 week program that requires a licensed professional, is limited in availability, high cost, and combines other elements aside from mindfulness meditation, such as yoga, martial arts, group discussion, poetry and other teaching techniques meant to increase mindfulness concentration. Furthermore, efficacy studies, which have assessed the long-term impact of MBSR are inconclusive. Although these studies on long-term practice demonstrate a …

Exploring The Relationship Of Motivation, Anxiety, And Virtual Worlds In The Experiences Of Two Spanish Language Learners: A Case Study, Amy Katherine Wehner

USF Tampa Graduate Theses and Dissertations

Virtual Worlds (VWs) in foreign language education are slowly becoming more popular. Many studies have looked at the affordances of these worlds and how they affect some aspects of language acquisition. However, it is still unknown to what extent, if any, these virtual worlds can play a role in affecting motivation and anxiety. The purpose of this study was to investigate the relationship between motivation, anxiety and virtual worlds to see how participation in activities within these environments interacted in two individual language learners, Jessica and Melissa.

Using a case study approach, I observed and interviewed the two participants in …

Homochiral Metal-Organic Materials: Design, Synthetic And Enantioseletive Separation, Shi-Yuan Zhang

USF Tampa Graduate Theses and Dissertations

Owing to the growing demand for enantiopurity in biological and chemical processes, tremendous efforts have been devoted to the synthesis of homochiral metal-organic materials (MOMs) because of their potential applications in chiral separation and asymmetric catalysis. In this dissertation, the synthetic strategies for homochiral MOMs are discussed keeping the focus on their applications. Two distinct approaches have been taken to synthesize chiral structures with different topologies and accessible cavities. The chiral MOMs have been utilized in enantioselective separation of racemates.

Chiral variants of the prototypal metal-organic framework MOF-5, δ-CMOF-5 and [lambda]-CMOF-5, have been synthesized by preparing MOF-5 in the presence …

Study Of The Motility Of Biological Cells By Digital Holographic Microscopy, Xiao Yu

USF Tampa Graduate Theses and Dissertations

In this dissertation, I utilize digital holographic microscopy (DHM) to study the motility of biological cells. As an important feature of DHM, quantitative phase microscopy by digital holography (DH-QPM) is applied to study the cell-substrate interactions and migratory behavior of adhesive cells. The traction force exerted by biological cells is visualized as distortions in flexible substrata. Motile fibroblasts produce wrinkles when attached to a silicone rubber film. For the non-wrinkling elastic substrate polyacrylamide (PAA), surface deformation due to fibroblast adhesion and motility is visualized as tangential and vertical displacement. This surface deformation and the associated cellular traction forces are measured …

Essays On Consumer's Psychological And Behavioral Responses Toward Social Coupons, Chinintorn Nakhata

USF Tampa Graduate Theses and Dissertations

Traditional economic theory suggests that consumers are likely to prepay for a product/ service that appears to be heavily discounted. However, in reality, many consumers do not think and act to achieve that goal. This is evident in consumer's psychological and behavioral responses toward a new type of price promotion, namely social coupons (SCs) (i.e., online coupons that offer consumers a substantial discount with a long redemption period when they prepay for a retailer's products/services). Such responses generate vital impacts not only on consumers themselves in terms of saving maximization but also on service retailers (e.g., sit-down dining restaurants) and …

Computer Model Inversion And Uncertainty Quantification In The Geosciences, Jeremy White

USF Tampa Graduate Theses and Dissertations

The subject of this dissertation is use of computer models as data analysis tools in several different geoscience settings, including integrated surface water/groundwater modeling, tephra fallout modeling, geophysical inversion, and hydrothermal groundwater modeling. The dissertation is organized into three chapters, which correspond to three individual publication manuscripts.

In the first chapter, a linear framework is developed to identify and estimate the potential predictive consequences of using a simple computer model as a data analysis tool. The framework is applied to a complex integrated surface-water/groundwater numerical model with thousands of parameters. Several types of predictions are evaluated, including particle travel time …

Small Group Interactions In Wiki-Based Collaborative Writing In The Eap Context, Mimi Li

USF Tampa Graduate Theses and Dissertations

Due to recent developments in Web 2.0 technologies, computer-mediated collaborative writing has captured the growing attention of second language researchers and instructors. The affordance of wikis for collaborative writing has been hailed, but few studies have explored the nature of wiki collaboration and interaction during small group writing using wikis. This dissertation investigated dynamic group interactions in wiki-based collaborative writing tasks in an English for Academic Purposes (EAP) course at a southeastern public research university in the U.S. A total of twenty-nine English as a Second Language graduate students collaboratively worked on two writing tasks within small groups in Wikispaces …

Response Of Benthic Foraminifera To Ocean Acidification And Impact On Florida's Carbonate Sediment Production, Paul O. Knorr

USF Tampa Graduate Theses and Dissertations

Increasing concentrations of atmospheric CO2 are in dynamic equilibrium with the oceans. The absorption of CO2 by seawater causes a decrease in seawater pH and calcite saturation state (SS). This process, termed ocean acidification, exerts deleterious effects on marine calcifiers. Studies of symbiont-bearing large benthic foraminifera (LBF) have reported a generally unfavorable response to increased concentrations of carbon dioxide ([CO2]).

Experiments and analyses were undertaken to examine the effect of increased [CO2] on the growth rate, ultrastructure, stable isotopes of carbon and oxygen, as well as Mg/Ca of the high-Mg miliolid Archaias angulatus and the low-Mg rotalid Amphistegina gibbosa. A …

Combination Of The Computational Methods: Molecular Dynamics, Homology Modeling And Docking To Design Novel Inhibitors And Study Structural Changes In Target Proteins For Current Diseases, Katherine Cristina Parra

USF Tampa Graduate Theses and Dissertations

In this thesis, molecular dynamics simulations, molecular docking, and homology modeling methods have been used in combination to design possible inhibitors as well as to study the structural changes and function of target proteins related to diseases that today are in the spotlight of drug discovery. The inwardly rectifying potassium (Kir) channels constitute the first target in this study; they are involved in cardiac problems. On the other hand, tensin, a promising target in cancer research, is the second target studied here.

The first chapter includes a brief update on computational methods and the current proposal of the combination of …

Balanced Artistry: Describing And Explaining Expert Teacher Practice As Adaptive Expertise, Nina Graham

USF Tampa Graduate Theses and Dissertations

This work was possible through the support of my personal and professional families. Personally, my husband Brad was my continual encourager through each phase of this journey. This accomplishment is as much his as mine. Also, through this process I feel I have matured at the hands of the Lord through His careful, peaceful leading within the many nuanced steps of completing the doctoral program. Professionally, the ladies forming my doctoral committee have been more than advisors, but mentors. Their thoughtful counsel helped me feel capable throughout the many phases of becoming a researcher and scholar, yet they offered insight …

Subversive Beauty - Victorian Bodies Of Expression, Lisa Michelle Hoffman-Reyes

USF Tampa Graduate Theses and Dissertations

Abstract

My dissertation seeks to bring aesthetics into conversation with the epistemological concerns of three Victorian texts, in response to the prevalence of beautiful feminine faces and bodies in Victorian texts, their presence amplified through the use of copious description. I examines the ways that Thomas Hardy, Oscar Wilde, and Robert Browning complicate traditional contemporary assumptions regarding behaviors and moralities through their constructions of feminine beauty. These writers challenge and dispute a variety of Victorian social norms imposed upon both men and women, most notably the mandate to adhere to prescribed behaviors that codify in order to regulate gender normativity. …

Interregional Interaction And Dilmun Power In The Bronze Age: A Characterization Study Of Ceramics From Bronze Age Sites In Kuwait, Hasan Ashkanani

USF Tampa Graduate Theses and Dissertations

The Dilmun civilization appeared in the Mesopotamian sources as a land of Eden and a supplier of ivory, copper, pearls and dates whose boats reached Ur ports. After the collapse of the Akkadian power in the second half of the third millennium BC, Dilmun underwent some notable changes in different aspects of life. The presence of planned residential settlements with notable architectural features and numerous burial complexes and `Royal Mounds' in Bahrain marked great economic growth and socio-political development in the early second millennium BC, suggesting the emergence of a stratified social hierarchy.

Furthermore, these changes suggest that a centralized …

A 3-D Pseudo-Rigid-Body Model For Rectangular Cantilever Beams With An Arbitrary Force End-Load, Jairo Renato Chimento

USF Tampa Graduate Theses and Dissertations

This dissertation introduces a novel three-dimensional pseudo-rigid-body model (3-D PRBM) for straight cantilever beams with rectangular cross sections. The model is capable of capturing the behavior of the neutral axis of a beam loaded with an arbitrary force end-load. Numerical integration of a system of differential equations yields approximate displacement and orientation of the beam's neutral axis at the free end, and curvatures of the neutral axis at the fixed end. This data was used to develop the 3-D PRBM which consists of two torsional springs connecting two rigid links for a total of 2 degrees of freedom (DOF). The …

Generic Competition And Price Regulation In The European Union Pharmaceutical Market: The Case Of Cardiovascular Medicines, Berna Colak

USF Tampa Graduate Theses and Dissertations

The purpose of this dissertation is to examine the extent of competition between generic products and therapeutic substitutes under different regulatory regimes in the European Union

(EU) pharmaceutical industry. In particular, this study investigates generic competition among the five largest European pharmaceutical markets; the United Kingdom, Germany, France, Italy

and Spain, with comprehensive IMS data for 10 years (1994-2003), in order to estimate the effect of generic entry on drug prices at the product level. This analysis finds that generic entry

has a negative effect on prices in countries with free pricing originator market, whereas in EU countries with strict …

It's About Time: Dynamics Of Inflationary Cosmology As The Source Of The Asymmetry Of Time, Emre Keskin

USF Tampa Graduate Theses and Dissertations

This project is about the asymmetry of time. The main source of discontent for physicists and philosophers alike is that even though in every physical theory we developed and/or discovered for explaining how the universe functions, the laws are time reversal invariant; there seems to be a very genuine asymmetry between the past and the future. The aim of this project is to examine several attempts to solve this friction between the laws of physics and the asymmetry and provide a new proposal that makes use of modern cosmology. In the recent history of physics and in contemporary philosophy of …

An Examination Of Cooperating Teachers' Observations Of Their Student Teachers In The Areas Of Personal, Teaching, And Musical Skills In The Elementary Classroom, Mark Remsen Cole

USF Tampa Graduate Theses and Dissertations

The purpose of this descriptive study was to examine the observations of elementary school music teachers regarding the level of preparation of their most recent student teachers at the beginning of their student teaching experience. Twenty-seven elementary music teachers participated in a survey rating the preparedness of their student teacher in the areas of personal, teaching, and musical skills, and provided free-response feedback concerning the skills and abilities they observed as strong and weak. These responses were compared to the 1997 research completed by David Teachout, where preservice teachers and experienced teachers were asked to list what they felt were …

Improving Spectrophotometric Carbon System Measurements, Mark Patsavas

USF Tampa Graduate Theses and Dissertations

This work provides improved procedures for spectrophotometric carbon system measurements. Indicator dyes used for routine spectrophotometric pH measurements in seawater suffer from impurity issues, which introduce vendor-specific systematic errors in pH determinations. The magnitude of these errors for several vendors was investigated for meta Cresol Purple (mCP) and Cresol Red (CR). Flash chromatography procedures were developed to obtain purified mCP and CR on a bulk scale in order to supply the oceanographic research community with the indicators. Easy access to the purified indicators ensures global intercomparability of spectrophotometric pH determinations.

Internal consistency of marine inorganic carbon system measurements was studied …

First-Principles Atomistic Simulations Of Energetic Materials, Aaron Christopher Landerville

USF Tampa Graduate Theses and Dissertations

This dissertation is concerned with the understanding of physico-chemical properties of energetic materials (EMs). Recently, a substantial amount of work has been directed towards calculations of equations of state and structural changes upon compression of existing EMs, as well as elucidating the underlying chemistry of initiation in detonating EMs. This work contributes to this effort by 1) predicting equations of state and thermo-physical properties of EMs, 2) predicting new phases of novel EMs, and 3) examining the initial stages of chemistry that result in detonation in EMs. The motivation for the first thrust, is to provide thermodynamic properties as input …

Exploring The Energy Link Between Emotion Regulation At Work And Health Behaviors, Ryan Christopher Johnson

USF Tampa Graduate Theses and Dissertations

The present study explores the process through which the regulation of emotions at work, also known as emotional labor, depletes self-regulatory resources, specifically energy, and distally impacts health behaviors in the form of less physical activity and more unhealthy eating. Differences in relationships between two forms of emotional labor, surface acting and deep acting, as well as differences between psychological and physical energy depletion, are explored. Additionally, the roles of trait mindfulness and future temporal focus are examined as between-individual differences moderating the proposed relationships.

Multi-level analysis of daily diary data collected from participants (N = 108 participants) over ten …

Neural Correlates Of Spectral, Temporal And Spectro-Temporal Modulation, Anusha Mohan

USF Tampa Graduate Theses and Dissertations

Natural sounds are characterized by the distribution of acoustic power over different frequency regions and/or time. This is termed spectral, temporal or spectro-temporal modulation. The auditory system is equipped with banks of filters tuned to different spectral, temporal and spectro-temporal modulation frequencies (SM, TM, STM). The sensitivity of the peripheral system to these modulations can be measured by undertaking a linear systems approach. In addition to understanding the psychophysical sensitivity, studying the neural patterns of their processing is also critical. The current study is an attempt to understand the relationship between the behavioral and neural correlates of spectral, temporal and …

The Hypertrophic Effects Of Practical Vascular Blood Flow Restriction Training, John Francis O'Halloran

USF Tampa Graduate Theses and Dissertations

Practical blood flow restriction training is a new training technique that has the potential to increase muscular hypertrophy and muscular strength while allowing practitioners to train with lighter loads (20-30% of 1-RM). Through the use of elastic knee wraps, the limbs can be restricted using a perceived pressure scale. The comparison of practical blood flow resistance training with traditional, non-blood flow restricted resistance training and its effects on muscular hypertrophy and strength has not been investigated.

Twenty-one resistance-trained males participated in a 4-week training program and were randomly assigned to one of two groups: Practical BFR training (BFR; n = …

The Effects Of Systematic Reinforcement On Academic Performance In Precision Teaching: An Investigation Of Acquisition, Retention, And Endurance, Victoria Ann Hoch

USF Tampa Graduate Theses and Dissertations

The use of positive reinforcement in acquisition programming is a hallmark of Applied Behavior Analysis; however, the Precision Teaching literature reveals a lack of reporting on the use of reinforcement. The present study utilized a groups design and single case analyses to investigate the effect of programming systematic tangible reinforcement on acquisition performance, retention and endurance of academic skills with 10 typically developing students ranging from 5-7 years of age. Results indicate that for both control and experimental participants, an increase in accuracy on both See/Say sight words and math problems occurred; however, the experimental group performed better on See/Say …

Using Contingency Mapping To Decrease Problem Behavior And Increase Social Communication Skills In Children With Autism, Diana Carolina Sanguino

USF Tampa Graduate Theses and Dissertations

Abstract

Social communication skills play a central role in the developmental outcomes for young children with autism. Due to deficits in social communication skills, many young children with autism develop problem behavior. Providing these children with the right tools to communicate properly may decrease their problem behavior. This study examines the impact of contingency mapping intervention on problem behavior and functional communication skills in three children with autism, using a multiple-baseline design. Before implementation of contingency mapping, verbal contingency was implemented in the first phase of intervention, which was associated with minimal increases in communication skills and decreases in problem …

Using Auditory Feedback To Improve The Performance Of Judokas During Uchi Komi, Taylor Easton Ferguson

USF Tampa Graduate Theses and Dissertations

Auditory feedback has been shown to be highly effective at teaching new skills to athletes in a variety of sports. This method consists of targeting a routine, breaking down the specific skills required to complete the routine, and training an individual on those skills using an auditory device to provide feedback on correct responses. This study evaluated the effectiveness of auditory feedback for improving a judo technique. One set of techniques taught in judo are standing throws, which require a partner to receive the technique (uke.) These throws require specific skills to successfully implement the technique. Auditory feedback was evaluated …