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Photophysics Of Organic Probes And Their Applications In Bioimaging & Photodynamic Therapy, Bosung Kim Jan 2015

Photophysics Of Organic Probes And Their Applications In Bioimaging & Photodynamic Therapy, Bosung Kim

Electronic Theses and Dissertations

Over the past several decades the phenomenon of luminescence (divided into fluorescence and phosphorescence) has received great attention in the field of biological science. This quest has motivated scientists for a variety of applications, including fluorescence imaging. Fluorescence microscopy techniques that provide unique advantages, such as high spatial resolution and superior sensitivity, have been regarded as attractive tools in biophotonics. With the progress of ultrafast laser sources, two-photon absorption (2PA), in which a molecule absorbs two photons simultaneously, has opened possibilities of using it for various applications. Two-photon fluorescence microscopy (2PFM), which affords deeper tissue penetration and excellent three-dimensional (3D) …


Thermodynamic Analysis And Optimization Of Supercritical Carbon Dioxide Brayton Cycles, Mahmood Mohagheghi Jan 2015

Thermodynamic Analysis And Optimization Of Supercritical Carbon Dioxide Brayton Cycles, Mahmood Mohagheghi

Electronic Theses and Dissertations

The power generation industry is facing new challenging issues regarding accelerating growth of electricity demand, fuel cost and environmental pollution. These challenges accompanied by concerns of energy resources becoming scarce necessitate searching for sustainable and economically competitive solutions to supply the future electricity demand. To this end, supercritical carbon dioxide (S-CO2) Brayton cycles present great promise particularly in high temperature concentrated solar power (CSP) and waste heat recovery (WHR) applications. With this regard, this dissertation is intended to perform thorough thermodynamic analyses and optimization of S-CO2 Brayton cycles for both of these applications. A modeling tool has been developed, which …


Expansive Learning In Fyc: Using Linguistic Discourse Analysis To Measure The Effects Of Threshold Concepts In Facilitating Generalization, Allison Morrow Jan 2015

Expansive Learning In Fyc: Using Linguistic Discourse Analysis To Measure The Effects Of Threshold Concepts In Facilitating Generalization, Allison Morrow

Electronic Theses and Dissertations

This study examines how and if threshold concepts enable expansive learning and generalization. Expansive learning and generalization are part of the highly contested conceptions of transfer, and these specific conceptions offer a more complex conception of transfer that deals with knowledge transformation (Tuomi-Gr?hn and Engestr?m, Beach). One way that we can see expansive learning and generalization transform knowledge is through the teaching of threshold concepts. In the last decade, there has been a movement toward using threshold concepts in FYC*s that take up writing studies as their curricula (Wardle and Downs, Dew). Even though using threshold concepts seems to be …


The Effect Of Precipitation On The Spread Of Mosquito-Borne Diseases: A Case Study Of Florida Counties, Marvin Osbourne Jan 2015

The Effect Of Precipitation On The Spread Of Mosquito-Borne Diseases: A Case Study Of Florida Counties, Marvin Osbourne

Electronic Theses and Dissertations

The state of Florida is the third most populous state in the United States of America, with six (6) of its metropolitan areas dubbed as the fastest growing in the entire country. A mosquito bite may mean the transmission of a virus or disease which might be fatal. Hence, there is a need for the state to control mosquitoes through the various Departments of Mosquito Control in each of its sixty-seven (67) counties. Six locally acquired mosquito-borne viruses which affect humans and animals in the state of Florida were considered. This thesis used statistical methods to examine data for rainfall, …


An Investigation Of The Impacts Of Face-To-Face And Virtual Laboratories In An Introductory Biology Course On Students' Motivation To Learn Biology., Amber Reece Jan 2015

An Investigation Of The Impacts Of Face-To-Face And Virtual Laboratories In An Introductory Biology Course On Students' Motivation To Learn Biology., Amber Reece

Electronic Theses and Dissertations

The objective of this study was to evaluate and compare the effects of face-to-face and virtual laboratories in a large-enrollment introductory biology course on students* motivation to learn biology. The laboratory component of post-secondary science courses is where students have opportunities for frequent interactions with instructors and their peers (Seymour & Hewitt, 1997; Seymour, Melton, Wiese, & Pederson-Gallegos, 2005) and is often relied upon for promoting interest and motivation in science learning (Hofstein & Lunetta, 2003; Lunetta, Hofstein, & Clough, 2007). However, laboratory courses can be resource intensive (Jenkins, 2007), leading post-secondary science educators to seek alternative means of laboratory …


Les Temps Roulent: An Analysis Of Emergency Medical And Police Response Times To Shootings And Lethality In New Orleans, Sarah Sacra Jan 2015

Les Temps Roulent: An Analysis Of Emergency Medical And Police Response Times To Shootings And Lethality In New Orleans, Sarah Sacra

Electronic Theses and Dissertations

Lethality of aggravated assaults has long been discussed in terms of weapons used, location of assault, demographics of victims, and regions of the US in which the assault occurred. However, dating back to the 1950s, medical response times have been discussed as a mediating factor, but minimally explored in analyses. The current study assesses the lethality of shootings with a primary focus on emergency medical and police response times in New Orleans, LA. Along with routine activities and social disorganization indicators, 102 shootings that occurred in 3 months are analyzed to establish response time patterns of lethality. Results indicate that …


A High-Content Multiplexed Screening Platform For The Evaluation And Manipulation Of Force And Fatigue Of Adult Derived Skeletal Muscle Myotubes In Defined Serum-Free Medium, Christopher Mcaleer Jan 2015

A High-Content Multiplexed Screening Platform For The Evaluation And Manipulation Of Force And Fatigue Of Adult Derived Skeletal Muscle Myotubes In Defined Serum-Free Medium, Christopher Mcaleer

Electronic Theses and Dissertations

The overall focus of this project has two parts: First, was to develop a protocol utilizing serum-free media formulations and defined plating and culture techniques to create functional in vitro myotubes derived from adult skeletal muscle satellite cells. The second was to manipulate the inherent muscle parameters such as force output and fatigue of these myotubes by employing exercise regimes or by small molecule application. The importance of serum-free medium use for in vitro cultures is becoming increasingly important in creating functional systems that can be validated for drug testing by the Food and Drug Administration (FDA). Also, the study …


Characterization Of Gold Black And Its Application In Un-Cooled Infrared Detectors, Deep Panjwani Jan 2015

Characterization Of Gold Black And Its Application In Un-Cooled Infrared Detectors, Deep Panjwani

Electronic Theses and Dissertations

Gold black porous coatings were thermally evaporated in the chamber backfilled with inert gas pressure and their optical properties were studied in near-far-IR wavelengths. The porosities of coatings were found to be extremely high around ~ 99%. Different approaches of effective medium theories such as Maxwell-Garnett, Bruggeman, Landau-Lifshitz-Looyenga and Bergman Formalism were utilized to calculate refractive index (n) and extinction coefficient (k). The aging induced changes on electrical and optical properties were studied in regular laboratory conditions using transmission electron microscopy, Fourier transform infrared spectroscopy, and fore-probe electrical measurements. A significant decrease in electrical resistance in as deposited coating was …


The Subjective Gameplay Experience: An Examination Of The Revised Game Engagement Model, Katelyn Procci Jan 2015

The Subjective Gameplay Experience: An Examination Of The Revised Game Engagement Model, Katelyn Procci

Electronic Theses and Dissertations

The study of the subjective gameplay experience spans multiple disciplines, from teachers who want to harness the power of gameplay to enhance instruction to game developers hoping to create the next big hit. Despite decades of interest, little agreement has been found regarding the way constructs—such as immersion, involvement, presence, and flow—are used to describe the subjective gameplay experience. Without the consistent usage of well-defined constructs, it becomes impossible to further scientific understanding of this domain. This dissertation examined the theoretical evolution of the key subjective gameplay experience constructs. From this, definitions for immersion, involvement, presence, and flow were extracted. …


Integral Representations Of Positive Linear Functionals, Angela Siple Jan 2015

Integral Representations Of Positive Linear Functionals, Angela Siple

Electronic Theses and Dissertations

In this dissertation we obtain integral representations for positive linear functionals on commutative algebras with involution and semigroups with involution. We prove Bochner and Plancherel type theorems for representations of positive functionals and show that, under some conditions, the Bochner and Plancherel representations are equivalent. We also consider the extension of positive linear functionals on a Banach algebra into a space of pseudoquotients and give under conditions in which the space of pseudoquotients can be identified with all Radon measures on the structure space. In the final chapter we consider a system of integrated Cauchy functional equations on a semigroup, …


Central Florida Educational Leaders' Professional Perceptions Of Race To The Top Components Concerning Teacher Evaluation And Compensation, Orin Smith Jan 2015

Central Florida Educational Leaders' Professional Perceptions Of Race To The Top Components Concerning Teacher Evaluation And Compensation, Orin Smith

Electronic Theses and Dissertations

This mixed-methods replication study was conducted to develop further understanding of the professional perceptions of educational leaders as to the fairness and impact of Race to the Top reforms concerning teacher evaluation and compensation on student achievement and growth. Graduate students in education and educational leadership from a target university were selected to complete an electronic survey to collect quantitative and qualitative data for analysis. Quantitative results from the electronic survey revealed limited diversity in professional perceptions of the five identified components of RTTT based upon professional classification or percentage free and reduced lunch population at the school sites where …


Collegiate Concerted Cultivation: The Influence Of Class And Family On Higher Education, Meghan Weyant Jan 2015

Collegiate Concerted Cultivation: The Influence Of Class And Family On Higher Education, Meghan Weyant

Electronic Theses and Dissertations

The 1966 Coleman Report and subsequent research identifies social class as an important determinant of educational outcomes, but after decades of research it is still unclear exactly why. This study purports to explore one possible explanation, collegiate concerted cultivation. The focus of this study was to explore the existence of collegiate concerted cultivation as a sociological concept. Collegiate concerted cultivation provides a theoretical framework to more deeply explore the relationships between social class, family factors, and familial support of education in order to better understand differential outcomes in achievement in higher education. Using a mixed method approach, the study examined …


The Effect Of Pre-Service Teaching On Student Achievement Using A Co-Teaching Model At An Elementary School In A Large, Urban School District In Central Florida, Walton Mchale Jan 2015

The Effect Of Pre-Service Teaching On Student Achievement Using A Co-Teaching Model At An Elementary School In A Large, Urban School District In Central Florida, Walton Mchale

Electronic Theses and Dissertations

This study was focused on the effect of pre-service teaching utilizing a co-teaching model on student achievement at an elementary school in a large, urban school district in central Florida. The contribution of university student teachers (i.e., interns) to elementary school achievement was investigated. Specifically explored was the difference between student achievement scores in classes with interns who participated in a co-teaching model and interns in classes that did not employ any structured approach to intern teaching. The researcher compared seven classes that employed co-teaching, where the university intern teacher and master teacher remained in the class conducting instruction, to …


Settlement History And Interaction In The Manialtepec Basin Of Oaxaca's Central Coast, Victoria Menchaca Jan 2015

Settlement History And Interaction In The Manialtepec Basin Of Oaxaca's Central Coast, Victoria Menchaca

Electronic Theses and Dissertations

As the focus of over 70 years* of archaeological research, Oaxaca, Mexico, is one of Mesoamerica*s best understood regions. Yet, despite the volume of work in Oaxaca, information about one of its key resource areas, the central Pacific coast, remains limited. Specifically, the ambiguous role of Oaxaca*s Central Coast in interregional relationships during pre-Hispanic times to the sites of Monte Alban and Tututepec has been a chronic problem and major source of debate for decades. The purpose of this thesis is to begin clarifying the role of Oaxaca*s Central Coast in interregional networks and its pre-Hispanic history. Analysis utilized surface …


A Case Study Of The Percieved Effectiveness Of The Two-Semester, Job-Embedded Internship, Stephanie Osmond Jan 2015

A Case Study Of The Percieved Effectiveness Of The Two-Semester, Job-Embedded Internship, Stephanie Osmond

Electronic Theses and Dissertations

The purpose of the study was to examine the perceived effectiveness of the two-semester, job-embedded internship for the development of effective Science, Technology, Engineering, and Mathematics (STEM) teachers. Students who were enrolled in the Resident Teacher Professional Preparation Program (RTP3) were able to earn a Master*s in the Art of Teaching (MAT), which included a two-semester, job-embedded internship. This study was designed to analyze the perceived effectiveness of the two-semester, job-embedded internship model at one urban high school from not only the resident teachers*, but also designees and stakeholders of the RTP3. Resident teachers participated in the two-semester, job-embedded internship …


An Evaluation Of A New Course Modality: A Pilot Study Of Cross-Listed Courses At Devry University, Karol Sapijaszko Jan 2015

An Evaluation Of A New Course Modality: A Pilot Study Of Cross-Listed Courses At Devry University, Karol Sapijaszko

Electronic Theses and Dissertations

Devry University, a private for-profit higher education institution, generates its revenue exclusively by students* tuition. In addition, DeVry University offers courses via two modalities: blended and online. Unfortunately, Devry University has seen its student enrollments decline over the last few years. Because of lower student enrollment levels, DeVry University has had to limit its course offerings. The problem of practice addressed in this dissertation is an insufficient number of blended course offerings for current DeVry students. To remedy this problem, an initiative was started at DeVry University to address the insufficient number of blended course offerings and to pilot a …


Inverse-Consistent Determination Of Young's Modulus Of Human Lung, Behnaz Seyfi Noferest Jan 2015

Inverse-Consistent Determination Of Young's Modulus Of Human Lung, Behnaz Seyfi Noferest

Electronic Theses and Dissertations

Human lung undergoes respiration-induced deformation due to sequential inhalation and exhalation. Accurate determination of lung deformation is crucial for tumor localization and targeted radiotherapy in patients with lung cancer. Numerical modeling of human lung dynamics based on underlying physics and physiology enables simulation and virtual visualization of lung deformation. Dynamical modeling is numerically complicated by the lack of information on lung elastic behavior, structural heterogeneity as well as boundary constrains. This study integrates physics-based modeling and image-based data acquisition to develop the patient-specific biomechanical model and consequently establish the first consistent Young's modulus (YM) of human lung. This dissertation has …


Theoretical And Computational Studies Of The Electronic, Structural, Vibrational, And Thermodynamic Properties Of Transition Metal Nanoparticles, Ghazal Shafai Erfani Jan 2015

Theoretical And Computational Studies Of The Electronic, Structural, Vibrational, And Thermodynamic Properties Of Transition Metal Nanoparticles, Ghazal Shafai Erfani

Electronic Theses and Dissertations

The main objective of this dissertation is to provide better understanding of the atomic configurations, electronic structure, vibrational properties, and thermodynamics of transition metal nanoparticles and evaluate the intrinsic (i.e. size and shape) and extrinsic (i.e. ligands, adsorbates, and support) effects on the aforementioned properties through a simulational approach. The presented research provides insight into better understanding of the morphological changes of the nanoparticles that are brought about by the intrinsic factors as well as the extrinsic ones. The preference of certain ligands to stabilize specific sizes of nanoparticles is investigated. The intrinsic and extrinsic effects on the electronic structure …


Attosecond Transient Absorption Spectroscopy Of Atoms And Molecules, Yan Cheng Jan 2015

Attosecond Transient Absorption Spectroscopy Of Atoms And Molecules, Yan Cheng

Electronic Theses and Dissertations

One of the most fundamental goals of attosecond science is to observe and to control the dynamic evolutions of electrons in matter. The attosecond transient absorption spectroscopy is a powerful tool to utilize attosecond pulse to measure electron dynamics in quantum systems directly. In this work, isolated single attosecond pulses are used to probe electron dynamics in atoms and to study dynamics in hydrogen molecules using the attosecond transient absorption spectroscopy technique. The target atom/molecule is first pumped to excited states and then probed by a subsequent attosecond extreme ultraviolet (XUV) pulse or by a near infrared (NIR) laser pulse. …


Agent-Based And System Dynamics Hybrid Modeling And Simulation Approach Using Systems Modeling Language, Asli Soyler Akbas Jan 2015

Agent-Based And System Dynamics Hybrid Modeling And Simulation Approach Using Systems Modeling Language, Asli Soyler Akbas

Electronic Theses and Dissertations

Agent-based (AB) and system dynamics (SD) modeling and simulation techniques have been studied and used by various research fields. After the new hybrid modeling field emerged, the combination of these techniques started getting attention in the late 1990's. Applications of using agent-based (AB) and system dynamics (SD) hybrid models for simulating systems have been demonstrated in the literature. However, majority of the work on the domain includes system specific approaches where the models from two techniques are integrated after being independently developed. Existing work on creating an implicit and universal approach is limited to conceptual modeling and structure design. This …


Structure-Property Relationship Of The Two-Photon Circular Dichroism Of Compounds With Axial And Helical Chirality, Carlos Diaz Jan 2015

Structure-Property Relationship Of The Two-Photon Circular Dichroism Of Compounds With Axial And Helical Chirality, Carlos Diaz

Electronic Theses and Dissertations

Back in 1894 Lord Kelvin coined the term "chiral" in order to refer to molecules whose mirror images were not superimposable with themselves. Over the years, research has demonstrated the important role that chiral molecules play in life, chemistry, and biology as well as their importance in the development of new drugs and technologies. The efforts to understand chiral systems have been mainly driven by spectroscopic methods that leverage on the opposite responses that enantiomers have to linear or circularly polarized light of both handedness. More specifically, Electronic Circular Dichroism (ECD) which measures the differences in linear absorption of left …


Examining The Perspectives Of Students With Learning Disabilities Through Their Lived Experiences, Hannah Ehrli Jan 2015

Examining The Perspectives Of Students With Learning Disabilities Through Their Lived Experiences, Hannah Ehrli

Electronic Theses and Dissertations

The purpose of this study was to examine the perspectives of college students with learning disabilities through their lived experiences. Specifically, as they related to their high school learning experiences, their transition to higher education, and their continued academic and social support in higher education. The researcher gathered qualitative data to gain insight into the world of students with learning disabilities. The study consisted of a survey, focus group, and in-depth interviews. The data were reviewed in order to achieve a holistic picture of what the students* perceptions illustrate and to understand thematic commonalities from their lived experiences. The researcher …


Catalytic Role Of Boron Nitride In The Thermal Decomposition Of Ammonium Perchlorate, Kevin Grossman Jan 2015

Catalytic Role Of Boron Nitride In The Thermal Decomposition Of Ammonium Perchlorate, Kevin Grossman

Electronic Theses and Dissertations

The decomposition of Ammonium Perchlorate (AP), a strong oxidizer used in solid rocket propellant, is widely studied in an attempt to increase the burn characteristics of propellants. Many materials have been shown to catalyze its decomposition, but little is known about the mechanism by which AP decomposition becomes catalyzed. In this study, Boron Nitride (BN) nanostructures, a material previously unknown to act as a catalyst, is studied. The decomposition reaction is studied by thermo-gravimetric analysis / differential scanning calorimetry, X-ray photoelectron spectroscopy, fourier transform infrared spectroscopy, transmission electron microscopy and scanning electron microscopy. The goal of this study is to …


"Build Your Own Adventure" Act Prep Manual: Beating The Odds Of High-Stakes Standardized Assessments, Natalie Holter Jan 2015

"Build Your Own Adventure" Act Prep Manual: Beating The Odds Of High-Stakes Standardized Assessments, Natalie Holter

Electronic Theses and Dissertations

Today's focus on high-stakes standardized tests has had a massive impact on education throughout America, and standardized test preparation is one of the ugly, open secrets of education. Ever since 2001 when President Bush signed into law No Child Left Behind (NCLB), a bipartisan reauthorization of Johnson's landmark Elementary and Secondary Education Act of 1965, students have been bombarded with standardized tests from the earliest grades. Politicians believe these measures are the only way to remedy the perceived weaknesses in the education system because "stringent accountability mandates… [provide] vital levers of change, inclusiveness, and transparency of results" (Education Week, 2011, …


Teaching Fractions Procedurally And Conceptually To Pre-Service Elementary Education Teachers, Deborah Edwards Jan 2015

Teaching Fractions Procedurally And Conceptually To Pre-Service Elementary Education Teachers, Deborah Edwards

Electronic Theses and Dissertations

The purpose of this Dissertation in Practice was to inform pre-service elementary education teachers of conceptual and procedural methods for teaching fractions. The problem of practice began when the researcher noticed a deficiency in fraction addition knowledge for a remedial mathematics program at a local private university. Further exposure of fraction knowledge for the 2014 third-grade Florida Comprehensive Assessment Test scores at a local elementary charter school ascertained slightly above 50% of those students making a 70% percentile or higher. Now that Florida State Standards are aligned with the Common Core Standards, pre-service elementary teachers need to know how to …


A Fifty State Legislative Review Of Charter School Funding, Governance And Accountability, Tionis Fordham Jan 2015

A Fifty State Legislative Review Of Charter School Funding, Governance And Accountability, Tionis Fordham

Electronic Theses and Dissertations

As waves of educational reform spread across the United States, charter schools continue to emerge as an alternative to the traditional public school. This study examined funding, governance, and accountability provisions of nationwide charter school legislation to ascertain similarities, differences, litigated challenges and funding issues throughout the United States of America. In order to study charter school legislation and litigation, all of the United States charter school legislation was collected along with American court cases related to charter schools and charter legislation. Legislation was reviewed to identify similarities and differences in funding, accountability and governance provisions throughout America. Court cases, …


Synthesis And Characterization Of Antimicrobial Non-Color Forming Silica-Silver Nanocomposite, Joshua Bazata Jan 2015

Synthesis And Characterization Of Antimicrobial Non-Color Forming Silica-Silver Nanocomposite, Joshua Bazata

Electronic Theses and Dissertations

Silver has been utilized for its antimicrobial properties for thousands of years in a variety of fields, extending the shelf life of food and water, rendering eating utensils sanitary, and more recently in biomedical applications such as silver based antiseptic creams. While effective as an antimicrobial agent at very low concentrations (µg/mL), silver imparts a strong color to objects it is incorporated into, due to its high plasmonic efficiency. The goal of this study was to determine if incorporating silver nanoparticles into a silica matrix could reduce or eliminate the plasmonic signal, while retaining the antimicrobial effects of the silver …


Low Absorption Liquid Crystal Materials For Midwave Infrared, Amy Creekmore Jan 2015

Low Absorption Liquid Crystal Materials For Midwave Infrared, Amy Creekmore

Electronic Theses and Dissertations

Liquid crystal is an amazing class of soft matters with applications spanning from visible, infrared, millimeter wave, to terahertz. In addition to direct-view displays and projection displays, liquid crystal is also widely used in adaptive optics, tunable-focus lens, and laser beam steering. Although the visible region has well developed materials and mixtures for the vast variety of applications, the midwave infrared (MWIR) region of the electromagnetic spectrum invites much development as only a few materials have been developed with these applications in mind. Unlike visible region, the major challenge for mid-wave infrared liquid crystal is inherently large absorption loss. To …


Finding Consensus Energy Folding Landscapes Between Rna Sequences, Joshua Burbridge Jan 2015

Finding Consensus Energy Folding Landscapes Between Rna Sequences, Joshua Burbridge

Electronic Theses and Dissertations

In molecular biology, the secondary structure of a ribonucleic acid (RNA) molecule is closely related to its biological function. One problem in structural bioinformatics is to determine the two- and three-dimensional structure of RNA using only sequencing information, which can be obtained at low cost. This entails designing sophisticated algorithms to simulate the process of RNA folding using detailed sets of thermodynamic parameters. The set of all chemically feasible structures an RNA molecule can assume, as well as the energy associated with each structure, is called its energy folding landscape. This research focuses on defining and solving the problem of …


Research On Improving Reliability, Energy Efficiency And Scalability In Distributed And Parallel File Systems, Junyao Zhang Jan 2015

Research On Improving Reliability, Energy Efficiency And Scalability In Distributed And Parallel File Systems, Junyao Zhang

Electronic Theses and Dissertations

With the increasing popularity of cloud computing and "Big data" applications, current data centers are often required to manage petabytes or exabytes of data. To store this huge amount of data, thousands or tens of thousands storage nodes are required at a single site. This imposes three major challenges for storage system designers: (1) Reliability---node failure in these datacenters is a normal occurrence rather than a rare situation. This makes data reliability a great concern. (2) Energy efficiency---a data center can consume up to 100 times more energy than a standard office building. More than 10% of this energy consumption …