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Developing And Validating The Secondary Literacy Professionals Needs Assessment Matrix, Analexis Kennedy Jan 2019

Developing And Validating The Secondary Literacy Professionals Needs Assessment Matrix, Analexis Kennedy

Electronic Theses and Dissertations

The purpose of this study was to develop and validate a needs assessment matrix for secondary specialized literacy professionals that identified the professional learning needs of literacy coaches. This tool was developed in order to inform school districts and secondary specialized literacy professionals about the types of professional learning support they will need for them to effectively meet the literacy needs of teachers in secondary schools. The Secondary Literacy Professionals Needs Assessment Matrix (SLPNAM) was created using a variety of methods. A synthesis of literature regarding school improvement, adolescent literacy, 21st century skills, adult learning, literacy coaching and the 2017 …

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Visual-Textual Video Synopsis Generation, Aidean Sharghi Karganroodi Jan 2019

Visual-Textual Video Synopsis Generation, Aidean Sharghi Karganroodi

Electronic Theses and Dissertations

In this dissertation we tackle the problem of automatic video summarization. Automatic summarization techniques enable faster browsing and indexing of large video databases. However, due to the inherent subjectivity of the task, no single video summarizer fits all users unless it adapts to individual user's needs. To address this issue, we introduce a fresh view on the task called "Query-focused'' extractive video summarization. We develop a supervised model that takes as input a video and user's preference in form of a query, and creates a summary video by selecting key shots from the original video. We model the problem as …

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Multi-Level Optimization With Pricing Strategy Under Boundedly Rationality User Equilibrium, Guanxiang Yun Jan 2019

Multi-Level Optimization With Pricing Strategy Under Boundedly Rationality User Equilibrium, Guanxiang Yun

Electronic Theses and Dissertations

We study multi-level optimization problem on energy system, transportation system and information network. We use the concept of boundedly rational user equilibrium (BRUE) to predict the behaviour of users in systems. By using multi-level optimization method with BRUE, we can help to operate the system work in a more efficient way. Based on the introducing of model with BRUE constraints, it will lead to the uncertainty to the optimization model. We generate the robust optimization as the multi-level optimization model to consider for the pessimistic condition with uncertainty. This dissertation mainly includes four projects. Three of them use the pricing …

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Solution Of Linear Ill-Posed Problems Using Overcomplete Dictionaries, Pawan Gupta Jan 2019

Solution Of Linear Ill-Posed Problems Using Overcomplete Dictionaries, Pawan Gupta

Electronic Theses and Dissertations

In this dissertation, we consider an application of overcomplete dictionaries to the solution of general ill-posed linear inverse problems. In the context of regression problems, there has been an enormous amount of effort to recover an unknown function using such dictionaries. While some research on the subject has been already carried out, there are still many gaps to address. In particular, one of the most popular methods, lasso, and its variants, is based on minimizing the empirical likelihood and unfortunately, requires stringent assumptions on the dictionary, the so-called, compatibility conditions. Though compatibility conditions are hard to satisfy, it is well …

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Catalytic Properties Of Defect-Laden 2d Material From First-Principles, Tao Jiang Jan 2019

Catalytic Properties Of Defect-Laden 2d Material From First-Principles, Tao Jiang

Electronic Theses and Dissertations

Two dimensional (2D) materials offer excellent opportunities for application as catalysts for energy needs. Their catalytic activity depends on the nature of defects, their geometry and their electronic structure. It thus important that the characteristics of defect-laden 2D materials be understood at the microscopic level. My dissertation focuses on theoretical and computational studies of several novel nanoscale materials using state-of-the-art techniques based on density functional theory (DFT) with the objective of understanding the microscopic factors that control material functionality. My work has helped establish defect-laden hexagonal boron nitride (dh-BN) as a promising metal-free catalyst for CO2 hydrogenation. Firstly, I showed …

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Sub-Terahertz Spin Pumping From An Insulating Antiferromagnet, Priyanka Vaidya Jan 2019

Sub-Terahertz Spin Pumping From An Insulating Antiferromagnet, Priyanka Vaidya

Electronic Theses and Dissertations

The combination of the spin transfer torque and spin Hall effects, or their reciprocal dynamical spin pumping and inverse spin Hall effects, respectively, enable reading and controlling the magnetization state in spintronics devices which are at the verge of mass commercialization as the next generation of energy-efficient and fast magnetic random-access memory applications with the use of ferromagnetic elements, e.g., the spin valve. However, these effects have remained elusive in antiferromagnetic-based devices up to date, despite the fascinating advantages offered by the absence of stray fields (zero net magnetization), Terahertz spin dynamics, and the widespread availability of metallic, insulating and …

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A Grounded Theory Survey Study Of Teachers Perception Perpetuating The Deficit Narrative About Marginalized Students Of Color, Cavel Austin Jan 2019

A Grounded Theory Survey Study Of Teachers Perception Perpetuating The Deficit Narrative About Marginalized Students Of Color, Cavel Austin

Electronic Theses and Dissertations

The deficit narrative about marginalized students of color attributes their failure in school to some nature of innate cognitive deficiency, cultural, social, and familial dysfunctions among other schools of thoughts. The purpose of this grounded theory study is to provide a rich description about this phenomenon and to propose theoretical pedagogical adjustments in the classroom as it relates to educating students of color. The study applies Charmaz (2014) Constructivist approach to grounded theory methods to examine the following research questions: (RQ1) How do teachers' narratives about students of color depict their teaching experiences and (RQ2) How do teachers' narratives about …

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Warrants For Right-Turn Flashing Yellow Arrow Signal Phases, Mohammed Alfawzan Jan 2019

Warrants For Right-Turn Flashing Yellow Arrow Signal Phases, Mohammed Alfawzan

Electronic Theses and Dissertations

The right-turn flashing yellow arrow (FYA) signal phasing is a new signal practice in the United States. The Manual on Uniform Traffic Control Devices MUTCD (2009) allocates a signal phasing section for the right-turn FYA, which requires a four-section head FYA signal. It supports multiple phases' indications that guide the motorist through permissive, protected, and/or permissive/protected phases. For this dissertation, I investigated three permissive right-turn FYA signal phases in various traffic conditions and signal timing circumstances. The first permissive right-turn FYA signal phase is the tight-turn on impeding through (RTOIT) taking place during the cross-street through traffic movement. The second …

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Nanoplasmonics In Two-Dimensional Dirac And Three-Dimensional Metallic Nanostructure Systems, Alireza Safaei Jan 2019

Nanoplasmonics In Two-Dimensional Dirac And Three-Dimensional Metallic Nanostructure Systems, Alireza Safaei

Electronic Theses and Dissertations

Surface plasmons are collective oscillation of electrons which are coupled to the incident electric field. Excitation of surface plasmon is a route to engineer the behavior of light in nanometer length scale and amplifying the light-matter interaction. This interaction is an outcome of near-field enhancement close to the metal surface which leads to plasmon damping through radiative decay to outgoing photons and nonradiative decay inside and on the surface of the material to create an electron-hole pair via interband or intraband Landau damping. Plasmonics in Dirac systems such as graphene show novel features due to massless electrons and holes around …

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Novel Solid State Lasers Based On Volume Bragg Gratings, Evan Hale Jan 2019

Novel Solid State Lasers Based On Volume Bragg Gratings, Evan Hale

Electronic Theses and Dissertations

Since their invention in 1960, lasers have revolutionized modern technology, and tremendous amounts of innovation and development has gone into advancing their properties and efficiencies. This dissertation reports on further innovations by presenting novel solid state laser systems based on the volume Bragg gratings (VBGs) and the newly developed holographic phase mask (HPMs) for brightness enhancement, dual wavelength operation, and mode conversion. First, a new optical element was created by pairing the HPM with two surface gratings creating an achromatic holographic phase mask. This new optical device successfully performed transverse mode conversion of multiple narrow line laser sources operating from …

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Development Of Multiport Single Stage Bidirectional Converter For Photovoltaic And Energy Storage Integration, Amit Bhattacharjee Jan 2019

Development Of Multiport Single Stage Bidirectional Converter For Photovoltaic And Energy Storage Integration, Amit Bhattacharjee

Electronic Theses and Dissertations

The energy market is on the verge of a paradigm shift as the emergence of renewable energy sources over traditional fossil fuel based energy supply has started to become cost competitive and viable. Unfortunately, most of the attractive renewable sources come with inherent challenges such as: intermittency and unreliability. This is problematic for today's stable, day ahead market based power system. Fortunately, it is well established that energy storage devices can compensate for renewable sources shortcomings. This makes the integration of energy storage with the renewable energy sources, one of the biggest challenges of modern distributed generation solution. This work …

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High-Dynamic-Range Foveated Near-Eye Display System, Guanjun Tan Jan 2019

High-Dynamic-Range Foveated Near-Eye Display System, Guanjun Tan

Electronic Theses and Dissertations

Wearable near-eye display has found widespread applications in education, gaming, entertainment, engineering, military training, and healthcare, just to name a few. However, the visual experience provided by current near-eye displays still falls short to what we can perceive in the real world. Three major challenges remain to be overcome: 1) limited dynamic range in display brightness and contrast, 2) inadequate angular resolution, and 3) vergence-accommodation conflict (VAC) issue. This dissertation is devoted to addressing these three critical issues from both display panel development and optical system design viewpoints. A high-dynamic-range (HDR) display requires both high peak brightness and excellent dark …

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Room Temperature Vox Air-Bridge Bolometer Integrated With Metal-Insulator-Metal Resonant Absorbers, Seth Calhoun Jan 2019

Room Temperature Vox Air-Bridge Bolometer Integrated With Metal-Insulator-Metal Resonant Absorbers, Seth Calhoun

Electronic Theses and Dissertations

Spectrally-selective un-cooled micro-bolometers have many military and industrial applications for infrared sensing and imaging, e.g. target acquisition and chemical analysis. In this work, a micro-bolometer was fabricated with integrated wavelength-selective absorber based on subwavelength metal-insulator-metal (MIM) resonators. The fabricated air-bridge structure used a vanadium oxide thin film as the bolometric element. A novel aqueous deposition method of depositing vanadium oxide was investigated and compared to traditional sputtered vanadium oxide to determine achievable temperature coefficient of resistance. The MIM absorber itself was investigated as a function of the dielectric used, and the strong dependence of the resonance spectrum on dispersion was …

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Role Of Tnfα Antagonists And Genetic Polymorphisms In Modulating Susceptibility To Mycobacterial Infection Among Patients With Crohn's Disease, Ahmad Qasem Jan 2019

Role Of Tnfα Antagonists And Genetic Polymorphisms In Modulating Susceptibility To Mycobacterial Infection Among Patients With Crohn's Disease, Ahmad Qasem

Electronic Theses and Dissertations

Tumor Necrosis Factor alpha antagonists (anti-TNFα) have been extensively used for Crohn's disease (CD) treatment. Even though they may control CD symptoms initially, treatment response varies among patients, which seems to depend on single nucleotide polymorphisms (SNPs) in TNFα receptors superfamily 1A and 1B (TNFRSF1A/B). Most importantly, M. tuberculosis infection has been strongly associated with these medications, but no studies have elucidated the effects of anti-TNFα on CD associated with MAP (Mycobacterium avium subspecies paratuberculosis; a possible causative agent of CD, and closely related to M. tuberculosis). Here, we investigated the effects of recombinant inflammatory cytokines and anti-TNFα therapeutics on …

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The Evaluation Of Classifier Performance On The Forensic Analysis Of Fire Debris And The Expansion Of The Substrate Database, Alyssa Allen Jan 2019

The Evaluation Of Classifier Performance On The Forensic Analysis Of Fire Debris And The Expansion Of The Substrate Database, Alyssa Allen

Electronic Theses and Dissertations

The current protocols in fire debris analysis rely on ignitable liquid pattern recognition and the identification of target compounds. These practices allow fire debris analysts to determine whether a sample contains or is absent of ignitable liquid residue and to classify that type of ignitable liquid based upon subjective thresholds. A statistical approach using computationally mixed datasets was devised in this research to generate an objective approach to the classification of fire debris samples and to determine error rates. Quadratic, linear, and partial least squares linear discriminant analysis (QDA, LDA, and PLS-DA) models were developed and evaluated to determine the …

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An Exploration Of Florida Public School Districts' Language Development Programs For Children Before They Enter Kindergarten, Sharon Ochotorena Jan 2019

An Exploration Of Florida Public School Districts' Language Development Programs For Children Before They Enter Kindergarten, Sharon Ochotorena

Electronic Theses and Dissertations

The purpose of the study was to determine the extent to which preschool programs and the 10 research-based components that develop language are present in Florida public school districts. Based on qualitative methods of analysis, the study utilized two primary sources of data collection to answer the two research questions that follow: 1. Of the 67 traditional public school districts in Florida, which have language development programs for children under the age of 5, excluding those subsidized by Part B of the IDEA? 2. How do components of the programs in the sample of school districts that have language development …

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Towards More Reliable Neural Network Learning Models, Navid Kardan Jan 2019

Towards More Reliable Neural Network Learning Models, Navid Kardan

Electronic Theses and Dissertations

Ideally, when a neural network makes a wrong decision or encounters an out-of-distribution example, its predictive confidence should be as low as possible. Three primary contributions in this dissertation address this challenge. The first two contributions are new approaches to mitigate overconfident predictions in modern neural networks. In the first (1), called competitive overcomplete output layer neural networks, several classifiers, as part of the same output layer, are trained simultaneously and later their consensus produces more reliable predictions. The second approach (2) reformulates the original classification problem into several new versions by combining classes together and training a classifier on …

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Hybrid Multi-Objective Optimization Of Left Ventricular Assist Device Outflow Graft Anastomosis Orientation To Minimize Stroke Rate, Blake Lozinski Jan 2019

Hybrid Multi-Objective Optimization Of Left Ventricular Assist Device Outflow Graft Anastomosis Orientation To Minimize Stroke Rate, Blake Lozinski

Electronic Theses and Dissertations

A Left Ventricular Assist Device (LVAD) is a mechanical pump that is utilized as a bridge to transplantation for patients with a Heart Failure (HF) condition. More recently, LVADs have been also used as destination therapy and have provided an increase in the quality of life for patients with HF. However, despite improvements in VAD design and anticoagulation treatment, there remains a significant problem with VAD therapy, namely drive line infection and thromboembolic events leading to stroke. This thesis focuses on a surgical maneuver to address the second of these issues, guided by previous steady flow hemodynamic studies that have …

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Theoretical And Experimental Study For Tailoring The Electromagnetic Properties Of Conductive Materials, Jeffrey Jennings Jan 2019

Theoretical And Experimental Study For Tailoring The Electromagnetic Properties Of Conductive Materials, Jeffrey Jennings

Electronic Theses and Dissertations

Induction in leaded, implanted medical devices exposed to radio frequency (RF) magnetic fields during magnetic resonance imaging (MRI) produce Joule heating in adjacent tissues causing various issues, including death. Given the importance of MRI as a diagnostic tool and the growth in leaded device-related treatments, identification of a solution ensuring their compatibility is of great interest. Electromagnetic (EM) surface property tailoring in lead materials to change their inductive response by adding functionally-graded, heterogeneous surface layers is a possible solution. However, non-uniform EM properties introduce two challenges: the added complexity of analyses and characterization of the graded region. This dissertation addresses …

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Investigation Of Flow Field Structures In A Rectangular Channel With A Pin Fin Array, Patrick Tran Jan 2019

Investigation Of Flow Field Structures In A Rectangular Channel With A Pin Fin Array, Patrick Tran

Electronic Theses and Dissertations

Pin fin arrays are commonly found in heat exchangers, turbine blades, and electronic heat sinks. Fin arrays are extended surfaces that are used as turbulence promoters by inducing horseshoe vortex (HSV) and von Karman vortex (KV) structures. The horseshoe vortex are primarily studied in the leading edge of the blunt body, whereas the KV are formed in the trailing side. This study presents an experimental investigation of flow field structures and pressure loss on staggered pin fin array in the wake region, where KV are dominate. These flow structures increase the local levels turbulence and generate eddies that promote flow …

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Gan Power Devices: Discerning Application-Specific Challenges And Limitations In Hemts, Andrew Binder Jan 2019

Gan Power Devices: Discerning Application-Specific Challenges And Limitations In Hemts, Andrew Binder

Electronic Theses and Dissertations

GaN power devices are typically used in the 600 V market, for high efficiency, high power-density systems. For these devices, the lateral optimization of gate-to-drain, gate, and gate-to-source lengths, as well as gate field-plate length are critical for optimizing breakdown voltage and performance. This work presents a systematic study of lateral scaling optimization for high voltage devices to minimize figure of merit and maximize breakdown voltage. In addition, this optimization is extended for low voltage devices ( < 100 V), presenting results to optimize both lateral features and vertical features. For low voltage design, simulation work suggests that breakdown is more reliant on punch-through as the primary breakdown mechanism rather than on vertical leakage current as is the case with high-voltage devices. A fabrication process flow has been developed for fabricating Schottky-gate, and MIS-HEMT structures at UCF in the CREOL cleanroom. The fabricated devices were designed to validate the simulation work for low voltage GaN devices. The UCF fabrication process is done with a four layer mask, and consists of mesa isolation, ohmic recess etch, an optional gate insulator layer, ohmic metallization, and gate metallization. Following this work, the fabrication process was transferred to the National Nano Device Laboratories (NDL) in Hsinchu, Taiwan, to take advantage of the more advanced facilities there. Following fabrication, a study has been performed on defect induced performance degradation, leading to the observation of a new phenomenon: trap induced negative differential conductance (NDC). Typically NDC is caused by self-heating, however by implementing a substrate bias test in conjunction with pulsed I-V testing, the NDC seen in our fabricated devices has been confirmed to be from buffer traps that are a result of poor channel carrier confinement during the dc operating condition.

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Training Neural Networks Through The Integration Of Evolution And Gradient Descent, Gregory Morse Jan 2019

Training Neural Networks Through The Integration Of Evolution And Gradient Descent, Gregory Morse

Electronic Theses and Dissertations

Neural networks have achieved widespread adoption due to both their applicability to a wide range of problems and their success relative to other machine learning algorithms. The training of neural networks is achieved through any of several paradigms, most prominently gradient-based approaches (including deep learning), but also through up-and-coming approaches like neuroevolution. However, while both of these neural network training paradigms have seen major improvements over the past decade, little work has been invested in developing algorithms that incorporate the advances from both deep learning and neuroevolution. This dissertation introduces two new algorithms that are steps towards the integration of …

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Task Focused Robotic Imitation Learning, Pooya Abolghasemi Jan 2019

Task Focused Robotic Imitation Learning, Pooya Abolghasemi

Electronic Theses and Dissertations

For many years, successful applications of robotics were the domain of controlled environments, such as industrial assembly lines. Such environments are custom designed for the convenience of the robot and separated from human operators. In recent years, advances in artificial intelligence, in particular, deep learning and computer vision, allowed researchers to successfully demonstrate robots that operate in unstructured environments and directly interact with humans. One of the major applications of such robots is in assistive robotics. For instance, a wheelchair mounted robotic arm can help disabled users in the performance of activities of daily living (ADLs) such as feeding and …

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Assessment Of A Surface Water Supply For Source And Treated Distribution System Quality, Angela Rodriguez Jan 2019

Assessment Of A Surface Water Supply For Source And Treated Distribution System Quality, Angela Rodriguez

Electronic Theses and Dissertations

This study focused on providing a source to tap assessment of surface water systems with respect to (i) the use of alternative biomonitoring tools, (ii) disinfection byproduct (DBP) formation and control, and (iii) corrosion control. In the first study component, two water systems were microbiologically evaluated using adenosine triphosphate (ATP) bioluminescence technology. It was determined that microbial ATP was useful as a surrogate for biomonitoring within a surface water system when paired with traditional methods. Although microbial activity differed between distribution systems that used either chloramine or chlorine disinfectant, in both cases flowrate and season affected microbial ATP values. In …

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Interactive Perception In Robotics, Masoud Baghbahari Baghdadabad Jan 2019

Interactive Perception In Robotics, Masoud Baghbahari Baghdadabad

Electronic Theses and Dissertations

Interactive perception is a significant and unique characteristic of embodied agents. An agent can discover plenty of knowledge through active interaction with its surrounding environment. Recently, deep learning structures introduced new possibilities to interactive perception in robotics. The advantage of deep learning is in acquiring self-organizing features from gathered data; however, it is computationally impractical to implement in real-time interaction applications. Moreover, it can be difficult to attach a physical interpretation. An alternative suggested framework in such cases is integrated perception-action. In this dissertation, we propose two integrated interactive perception-action algorithms for real-time automated grasping of novel objects using pure …

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Simulation, Analysis, And Optimization Of Heterogeneous Cpu-Gpu Systems, Christopher Giles Jan 2019

Simulation, Analysis, And Optimization Of Heterogeneous Cpu-Gpu Systems, Christopher Giles

Electronic Theses and Dissertations

With the computing industry's recent adoption of the Heterogeneous System Architecture (HSA) standard, we have seen a rapid change in heterogeneous CPU-GPU processor designs. State-of-the-art heterogeneous CPU-GPU processors tightly integrate multicore CPUs and multi-compute unit GPUs together on a single die. This brings the MIMD processing capabilities of the CPU and the SIMD processing capabilities of the GPU together into a single cohesive package with new HSA features comprising better programmability, coherency between the CPU and GPU, shared Last Level Cache (LLC), and shared virtual memory address spaces. These advancements can potentially bring marked gains in heterogeneous processor performance and …

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Multi-Modal Interfaces For Sensemaking Of Graph-Connected Datasets, Anthony Wehrer Jan 2019

Multi-Modal Interfaces For Sensemaking Of Graph-Connected Datasets, Anthony Wehrer

Electronic Theses and Dissertations

The visualization of hypothesized evolutionary processes is often shown through phylogenetic trees. Given evolutionary data presented in one of several widely accepted formats, software exists to render these data into a tree diagram. However, software packages commonly in use by biologists today often do not provide means to dynamically adjust and customize these diagrams for studying new hypothetical relationships, and for illustration and publication purposes. Even where these options are available, there can be a lack of intuitiveness and ease-of-use. The goal of our research is, thus, to investigate more natural and effective means of sensemaking of the data with …

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Design, Synthesis And Characterization Of Biomimetic, Bioinspired And Bio-Related Functional Polymers For Atmospheric Water Recovery, Abdullah Alqassar Jan 2019

Design, Synthesis And Characterization Of Biomimetic, Bioinspired And Bio-Related Functional Polymers For Atmospheric Water Recovery, Abdullah Alqassar

Electronic Theses and Dissertations

Atmospheric water recovery in changing environments has received wide attention in environmental science and engineering communities due to rapid population growth and frequent droughts. This study is focused on the design, synthesis, and characterization of biomimetic, bioinspired, and bio-related functional polymers (b3p) to help resolve the water supply issue especially in arid or semi-arid regions. It is aimed to develop unique synthetic methods to access well-defined polymers with the aid of nanomaterials and metal to produce next generation polymer materials for better atmospheric water recovery. The design of such new b3p is bioinspired by some skin materials of biological species …

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Rethinking Routing And Peering In The Era Of Vertical Integration Of Network Functions, Prasun Kanti Dey Jan 2019

Rethinking Routing And Peering In The Era Of Vertical Integration Of Network Functions, Prasun Kanti Dey

Electronic Theses and Dissertations

Content providers typically control the digital content consumption services and are getting the most revenue by implementing an "all-you-can-eat" model via subscription or hyper-targeted advertisements. Revamping the existing Internet architecture and design, a vertical integration where a content provider and access ISP will act as unibody in a sugarcane form seems to be the recent trend. As this vertical integration trend is emerging in the ISP market, it is questionable if existing routing architecture will suffice in terms of sustainable economics, peering, and scalability. It is expected that the current routing will need careful modifications and smart innovations to ensure …

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Long-Term Carbon And Copper Impact On Nutrient Removal Via Green Sorption Media In Dynamic Linear Ditch Environments, Diana Ordonez Jan 2019

Long-Term Carbon And Copper Impact On Nutrient Removal Via Green Sorption Media In Dynamic Linear Ditch Environments, Diana Ordonez

Electronic Theses and Dissertations

Nutrient-laden stormwater runoff causes environmental and ecological impacts on receiving water bodies. Biosorption Activated Media (BAM) composed of the sand, tire crumb, and clay have been implemented in stormwater best management practices due to its ability to efficiently remove nutrients from stormwater runoff, such as in roadside linear ditches, via unique chemophysical and microbiological processes. In this study, a set of fixed-bed columns were set up to simulate some external forces in roadside linear ditches and examine how these external forces affect the performance of BAM. In our experiment, scenario 1 simulates the impact that animals such as tortoises, moles …

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