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2018

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Computational Modeling Of Heat Transport And Volatile Extraction From Asteroid Materials, Joel C. Sercel, Mark A. Crawford, Christopher Dreyer, Egboche Unobe, Robert Jedicke, Stanley Love, Leslie S. Gertsch Jan 2018

Computational Modeling Of Heat Transport And Volatile Extraction From Asteroid Materials, Joel C. Sercel, Mark A. Crawford, Christopher Dreyer, Egboche Unobe, Robert Jedicke, Stanley Love, Leslie S. Gertsch

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

This paper presents the results of a program of computational modeling focused on elucidating the physics and chemical processes associated with the extraction of volatile materials from asteroid feedstocks with an eye toward use of the extracted materials for propulsion, radiation shielding, and replenishment of mission consumables. We present a math model of conductive heat transport, chemical processes, and gas escape by Darcian diffusion. Chemical processes in the model include pyrolysis of organic chemical constituents and thermal dehydration and decarbonization of hydrates and carbonates. The model is implemented in a spherical finite difference computational engine that predicts time histories of …

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Geodesic Structure In Schwarzschild Geometry With Extensions In Higher Dimensional Spacetimes, Ian M. Newsome Jan 2018

Geodesic Structure In Schwarzschild Geometry With Extensions In Higher Dimensional Spacetimes, Ian M. Newsome

Theses and Dissertations

From Birkoff's theorem, the geometry in four spacetime dimensions outside a spherically symmetric and static, gravitating source must be given by the Schwarzschild metric. This metric therefore satisfies the Einstein vacuum equations. If the mass which gives rise to the Schwarzschild spacetime geometry is concentrated within a radius of r=2M, a black hole will form. Non-accelerating particles (freely falling) traveling through this geometry will do so along parametrized curves called geodesics, which are curved space generalizations of straight paths. These geodesics can be found by solving the geodesic equation. In this thesis, the geodesic structure in the Schwarzschild geometry …

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Modeling Fluid Motion Over Fibrous Surfaces, Delli Ganesh Venkateshan Jan 2018

Modeling Fluid Motion Over Fibrous Surfaces, Delli Ganesh Venkateshan

Theses and Dissertations

The ultimate goal of this project has been to develop a computational model for quantifying the interactions between of a body of fluid and a fibrous surface. To achieve this goal, one has to develop a model to create virtual structures that resemble the morphology of a fibrous surface (Objective-1) as well as a model that can simulate the flow of a fluid over these virtual surfaces (Objective-2). To achieve the first objective, we treated fibers as an array of beads interconnected through viscoelastic elements (springs and dampers). The uniqueness of our algorithm lies in its ability to simulate the …

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Experimental Evaluation Of Uranyl Transport Into Mesoporous Silica Gel Using Fluorescence, Brandon M. Dodd Jan 2018

Experimental Evaluation Of Uranyl Transport Into Mesoporous Silica Gel Using Fluorescence, Brandon M. Dodd

Theses and Dissertations

This research investigated parameters that can affect the use of nanoporous silica gel as a media for accumulating a detectable amount of uranium. The unique fluorescence of the Uranyl (UO22+) ion was used to evaluate the transport kinetics and accumulation within silica gel in a static fluid and under pressure driven flow. The addition of fluid flow decreased the time constant from on the order of an hour to approximately 2s with a very low fluid velocity of 0.36cm/s. The 0.36cm/s fluid velocity was found to be the critical velocity above which there was no gain in …

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Polyanthroponemia: A Pursuit Of Mystery, Magdolene Dykstra Jan 2018

Polyanthroponemia: A Pursuit Of Mystery, Magdolene Dykstra

Theses and Dissertations

I wish I could believe in something. Having grown up in a religious household, I have continually teetered between faith and doubt. Landscapes seen and unseen are my last source of awe; here my doubt is suspended – for a moment. Using unfired clay, I create alternate landscapes inspired by sublime philosophy. The sublime experience is born in a sense of amazement linked to fear of something beyond our understanding or control. The amazing intricacy of microbiology, a whole universe existing alongside and inside us, fascinates me. The abundance of unfamiliar life in my work triggers a cautious curiosity. My …

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Every English Learner Succeeds: The Need For Uniform Entry And Exit Requirements, Ana A. Núñez Cárdenas Jan 2018

Every English Learner Succeeds: The Need For Uniform Entry And Exit Requirements, Ana A. Núñez Cárdenas

Brooklyn Law Review

While the number of English Learners (ELs) continues to significantly grow in the United States, the focus on their education is still severely lacking. During the No Child Left Behind (NCLB) era, the federal role in education greatly expanded, holding states accountable for their practices and ensuring academic proficiency. Even with the federal government’s expanded role ELs’ academic achievements did not improve and were further frustrated under the NCLB. In 2005, the Every Student Succeeds Act (ESSA) was introduced to ameliorate the harmful stain the NCLB left on education. Under the ESSA, the states regained both their autonomy and flexibility …

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An Analysis Of Extended Strings Of Hits And Misses In A Mental Telepathy Task, Gregory R. Peck Jan 2018

An Analysis Of Extended Strings Of Hits And Misses In A Mental Telepathy Task, Gregory R. Peck

Masters Theses

The current study was designed to reanalyze archival data from the Eastern Illinois University parapsychology lab to determine the frequency of strings of hits and misses. Four datasets were included in the analyses, comprising a total of 348 participants. It was hypothesized that there would be more strings of hits and/or misses than expected by chance; there would be a difference between the number of strings of hits and the number of strings of misses; and participant scores on a 7-point belief in psi scale would be related to the frequency of hits and misses. Results indicated that no significant …

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An Analysis Of The Meaning, Barriers, And Value Of Developmental Education For First-Generation Minority Students At A Community College, Molly Murphy Jan 2018

An Analysis Of The Meaning, Barriers, And Value Of Developmental Education For First-Generation Minority Students At A Community College, Molly Murphy

Masters Theses

This qualitative, phenomenological study was designed to learn more about how first-generation, minority community college students perceive the meaning, barriers, and value of developmental education. Five participants were interviewed in a semi-structured format. The results provided nuanced and personal accounts from students who revealed that developmental education affects their feelings of self-efficacy, that systemic financial challenges are consistent barriers to success, and that the connections between teachers and their students, or lack thereof, are perceived to have an impact on the usefulness of developmental education. Finally, results indicated the importance of working with students individually to understand how their ethnic …

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Understanding The Transition To College For Students With Learning Disabilities, Breanna Rehor Jan 2018

Understanding The Transition To College For Students With Learning Disabilities, Breanna Rehor

Masters Theses

This study sought to investigate the transition to college for students with learning disabilities at a mid-size Midwestern university. A qualitative approach was used to provide insight in student's perspectives on the transition from high school to college. Three undergraduate students with learning disabilities were individually interviewed to gain understanding of the transition to college. The results demonstrated a critical need for institutions to address the transition to college for students with learning disabilities and create incentives that guide support for student success. Students utilizing various support systems like academic student services, and peers. The transitions to college for students …

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Contested Visions: The Value Of Systems Theory For Corporate Law, Tamara Belinfanti, Lynn A. Stout Jan 2018

Contested Visions: The Value Of Systems Theory For Corporate Law, Tamara Belinfanti, Lynn A. Stout

Articles & Chapters

Despite the dominant role corporations play in our economy, culture, and politics, the nature and purpose of corporations remains hotly contested. This conflict was brought to the fore in the recent Supreme Court opinions in Citizens United and Hobby Lobby. Although the prevailing narrative for the past quarter-century has been that corporations “belong” to shareholders and should pursue “shareholder value,” support for this approach, which has been justified as essential for managerial accountability, is eroding. It persists today primarily in the form of the argument that corporations should seek “long-term” shareholder value. Yet, as this Article shows, when shareholder value …

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Suggesting Missing Information In Text Documents, Grant Michael Hodgson Jan 2018

Suggesting Missing Information In Text Documents, Grant Michael Hodgson

Theses and Dissertations

A key part of contract drafting involves thinking of issues that have not been addressedand adding language that will address the missing issues. To assist attorneys with this task, we present a pipeline approach for identifying missing information within a contract section. The pipeline takes a contract section as input and includes 1) identifying sections that are similar to the input section from a corpus of contract sections; and 2) identifying and suggesting information from the similar sections that are missing from the input section. By taking advantage of sentence embedding and principal component analysis, this approach suggests sentences that …

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Does God Have A Body? Rāmānuja’S Challenge To The Christian Tradition, Jon Paul Sydnor Jan 2018

Does God Have A Body? Rāmānuja’S Challenge To The Christian Tradition, Jon Paul Sydnor

Journal of Hindu-Christian Studies

The Christian tradition’s core theological assertion is the embodiment of God in the person of Jesus Christ. Yet, even while asserting God’s incarnation in space and time, the tradition has usually denied embodiment unto the Godhead itself. Theologians have based this denial on Jewish iconoclasm, Greek idealism, and inferences from God’s omnipresence, transcendence, and infinity. This speculative essay will argue that Hindu Śrīvaiṣṇava theologian Rāmānuja successfully addresses these concerns. He argues for the embodiment of an omnipresent, transcendent, and infinite personal God. Rāmānuja largely derives his arguments from the Hindu scriptures. Nevertheless, their rational explication and internal coherence render divine …

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Thin-Film Lithium Niobate Photonics For Electro-Optics, Nonlinear Optics, And Quantum Optics On Silicon, Ashutosh Rao Jan 2018

Thin-Film Lithium Niobate Photonics For Electro-Optics, Nonlinear Optics, And Quantum Optics On Silicon, Ashutosh Rao

Electronic Theses and Dissertations

Ion-sliced thin-film lithium niobate (LN) compact waveguide technology has facilitated the resurgence of integrated photonics based on lithium niobate. These thin-film LN waveguides offer over an order of magnitude improvement in optical confinement, and about two orders of magnitude reduction in waveguide bending radius, compared to conventional LN waveguides. Harnessing the improved confinement, a variety of miniaturized and efficient photonic devices are demonstrated in this work. First, two types of compact electrooptic modulators are presented – microring modulators, and Mach-Zehnder modulators. Next, two distinct approaches to nonlinear optical frequency converters are implemented – periodically poled lithium niobate, and mode shape …

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Investigating Compositional Variations Of S-Complex Near-Earth Asteroids: (1627) Ivar, Jenna Jones Jan 2018

Investigating Compositional Variations Of S-Complex Near-Earth Asteroids: (1627) Ivar, Jenna Jones

Electronic Theses and Dissertations

We seek to investigate the complexity and heterogeneity of the surfaces of near-Earth asteroids (NEAs). In particular, we are studying the S-complex NEAs, which account for a large portion of the observed near-Earth objects. Here we present our results for (1627) Ivar, an Amor class NEA with taxonomic type Sqw. In 2013, Ivar's large size and close approach to Earth (minimum distance 0.32 AU) provided an opportunity to observe the asteroid over many different viewing angles for an extended period of time. We collected delay-Doppler radar images and Doppler spectra using the Arecibo Observatory's 2380 MHz radar, and, by incorporating …

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Electronic, Optical, And Magnetic Properties Of Graphene And Single-Layer Transition Metal Dichalcogenides In The Presence Of Defects, Mahtab Khan Jan 2018

Electronic, Optical, And Magnetic Properties Of Graphene And Single-Layer Transition Metal Dichalcogenides In The Presence Of Defects, Mahtab Khan

Electronic Theses and Dissertations

Two-dimensional (2D) materials, such as graphene and single-layer (SL) transition metal dichalcogenides (TMDCs), have attracted a lot of attention due to their fascinating electronic and optical properties. Graphene was the first 2D material that has successfully been exfoliated from bulk graphite in 2004. In graphene, charge carriers interacting with the honeycomb lattice of carbon atoms of graphene to appear as massless Dirac fermions. Massless quasiparticles with linear dispersion are also observed in surface states of 3D topological insulators and quantum Hall edge states. My first project deals with the two-dimensional Hong-Ou-Mandel (HOM) type interference experiment for massless Dirac fermions in …

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The Effects Of Regulatory Orientation On Subjective Task Values, Ability Beliefs, And Gameplay In A Grammar Editing Computer Game, Stephen Strnad Jan 2018

The Effects Of Regulatory Orientation On Subjective Task Values, Ability Beliefs, And Gameplay In A Grammar Editing Computer Game, Stephen Strnad

Electronic Theses and Dissertations

This study investigated mean group differences in composite subjective task values, ability beliefs, and gameplay behaviors between low promotion and high promotion English as a Second Language (ESL) postsecondary students while playing two versions of a grammar-editing computer game. First, students were categorized according to their scores on the General Regulatory Focus Measure. Next, students played two identical versions of the grammar-editing game; in the second game version, an independent variable was added in the form of an in-game punishment. In the middle of each game version, students completed a modified version of the Expectancy-value Questionnaire. Independent samples t-tests were …

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Interpersonal Behavior Traits And Their Relationship To Administrator-To-Teacher Feedback: A Quantitative Study, Robert Walker Jan 2018

Interpersonal Behavior Traits And Their Relationship To Administrator-To-Teacher Feedback: A Quantitative Study, Robert Walker

Electronic Theses and Dissertations

The purpose of this study was to explore what, if any, relationship exists between the interpersonal behavior traits held by administrators and the quality of the feedback they provide to teachers. The Interpersonal Behavior Survey (IBS) was used to develop interpersonal behavior profiles for all the school-based administrators from a moderately sized school district who consented to participate in the study. Additionally, the comments submitted as feedback to teachers by the participating administrators were reviewed and scored using a rubric. Multiple regression analysis was performed to determine what, if any, relationship exists between the traits measured by the IBS and …

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Dynamically Tunable Plasmonic Structural Color, Daniel Franklin Jan 2018

Dynamically Tunable Plasmonic Structural Color, Daniel Franklin

Electronic Theses and Dissertations

Functional surfaces which can control light across the electromagnetic spectrum are highly desirable. With the aid of advanced modeling and fabrication techniques, researchers have demonstrated surfaces with near arbitrary tailoring of reflected/transmitted amplitude, phase and polarization - the applications for which are diverse as light itself. These systems often comprise of structured metals and dielectrics that, when combined, manifest resonances dependent on structural dimensions. This attribute provides a convenient and direct path to arbitrarily engineer the surface's optical characteristics across many electromagnetic regimes. But while many of these plasmonic systems struggle to compete with the efficiency of pre-existing technologies, the …

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Touching The Unreal: The Definition, Narrative Strategies, And Aesthetics Of 3d Cartoon Narratives., Nathan Snow Jan 2018

Touching The Unreal: The Definition, Narrative Strategies, And Aesthetics Of 3d Cartoon Narratives., Nathan Snow

Electronic Theses and Dissertations

"Touching the Unreal" follows the structure set out by Scott McCloud in Understanding Comics to argue that understanding cartoons is serious business and requires that we define the art form, outline its basic tenets, and theorize how the mind understands it. The dissertation argues for a new definition of 3D computer generated cartoons, beginning with the most basic definition applicable to all forms of animation and taking into account new technological developments before arriving at the 3D cartoon narratives of today. The dissertation outlines the basic facets of 3D cartoon narratives in terms of narrative and aesthetics, arguing that, in …

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Optical Properties Of Single Nanoparticles And Two-Dimensional Arrays Of Plasmonic Nanostructures, Yadong Zhou Jan 2018

Optical Properties Of Single Nanoparticles And Two-Dimensional Arrays Of Plasmonic Nanostructures, Yadong Zhou

Electronic Theses and Dissertations

The tunability of plasmonic properties of nanomaterials makes them promising in many applications such as molecular detection, spectroscopy techniques, solar energy materials, etc. In the thesis, we mainly focus on the interaction between light with single nanoparticles and two-dimensional plasmonic nanostructures using electrodynamic methods. The fundamental equations of electromagnetic theory: Maxwell's equations are revisited to solve the problems of light-matter interaction, particularly the interaction of light and noble nanomaterials, such as gold and silver. In Chapter 1, Stokes parameters that describe the polarization states of electromagnetic wave are presented. The scattering and absorption of a particle with an arbitrary shape …

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Development And Characterization Of Solid-Contact Paper-Based And Micro Ion-Selective Electrodes For Environmental Analysis, Stephanie Armas Jan 2018

Development And Characterization Of Solid-Contact Paper-Based And Micro Ion-Selective Electrodes For Environmental Analysis, Stephanie Armas

Electronic Theses and Dissertations

Ion-selective electrodes (ISEs) have extensively been used for food analysis, as medical diagnostic tools, and for some environmental applications. However, ISEs are hindered by the need of a bulky reference electrode and the pre-conditioning step of the sensor, which can often be lengthy. This work will discuss how the direct addition of target analyte into the cocktail sensing membrane can circumvent the pre-conditioning step. Furthermore, the work is presented in an optimized ready-to-use single strip design, where the bulky glass reference electrode (RE) is no longer needed. The bulky RE was replaced by drop casting a simple two-component mixture consisting …

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Advancements In Liquid Chromatography For The Determination Of Polycyclic Aromatic Compounds In Environmental Samples, Hugh Hayes Jan 2018

Advancements In Liquid Chromatography For The Determination Of Polycyclic Aromatic Compounds In Environmental Samples, Hugh Hayes

Electronic Theses and Dissertations

The purpose of this dissertation is to provide a new and improved analytical methodology for the analysis of polycyclic aromatic hydrocarbons (PAHs) and polycyclic aromatic sulfur heterocycles (PASHs) in environmental samples. Hundreds of PAHs and PASHs are present in the environment and have great toxicological importance and the chemical determination of these components is a priority. The complete normal-phase liquid chromatography (NPLC) retention behavior has been explored for these compounds. Retention indices were determined for 124 PAHs, 62 methyl-PAHs (MePAHs), 67 PASHs, and 80 alkyl-PASHs on an aminopropyl (NH2) stationary phase which represents the most comprehensive study of polycyclic aromatic …

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Design, Synthesis, Stability, And Photocatalytic Studies Of Sustainable Metal-Organic Frameworks, Matthew Logan Jan 2018

Design, Synthesis, Stability, And Photocatalytic Studies Of Sustainable Metal-Organic Frameworks, Matthew Logan

Electronic Theses and Dissertations

The presented dissertation focuses on the design, synthesis, and characterization of metal-organic frameworks (MOFs) composed of earth-abundant elements the exhibit photoredox activity and studied their application as heterogeneous photocatalysts in organic synthesis and in solar-to-chemical energy conversion. In particular, the structure-property relationships of titanium-based MOFs relating the structure of the organic building unit and the photophysical and photochemical activity of the solid material is studied. The first novel family of seven MOFs isoreticular to MIL-125-NH2, includes functionalized with N-alkyl groups with increasing chain length (methyl to heptyl) and with varying connectivity (primary or secondary). The functionalized materials displayed reduced optical …

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A Multiple Case Study Exploring The Relationship Between Engagement In Model-Eliciting Activities And Pre-Service Secondary Mathematics Teachers' Mathematical Knowledge For Teaching Algebra, Aline Abassian Jan 2018

A Multiple Case Study Exploring The Relationship Between Engagement In Model-Eliciting Activities And Pre-Service Secondary Mathematics Teachers' Mathematical Knowledge For Teaching Algebra, Aline Abassian

Electronic Theses and Dissertations

The goal of this research study was to explore the nature of the relationship between engagement in model-eliciting activities (MEAs) and pre-service secondary mathematics teachers' (PSMTs') mathematical knowledge for teaching (MKT) algebra. The data collection took place in an undergraduate mathematics education content course for secondary mathematics education majors. In this multiple case study, PSMTs were given a Learning Mathematics for Teaching (LMT) pre-assessment designed to measure their MKT algebra, and based on those results, three participants were selected with varying levels of knowledge. This was done to ensure varied cases were represented in order to be able to examine …

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A Study Of The Influence Of The Restorative Justice Model On Out-Of-School Suspensions In A Large School District, Brian Agard Jan 2018

A Study Of The Influence Of The Restorative Justice Model On Out-Of-School Suspensions In A Large School District, Brian Agard

Electronic Theses and Dissertations

The purpose of this quantitative study was to investigate whether the Restorative Justice model influenced the number of days that students were suspended out-of-school or the number of out-of-school suspension incidents. In addition, the researcher analyzed whether the Restorative Justice model had different impacts for the subgroups of students qualifying for free and reduced lunch (FRL), English Learners (EL), students qualifying for exceptional student education services (ESE), and three ethnic subgroups (White, Black, and Hispanic) in an urban school district in Central Florida for the sixth-, seventh-, and eighth-grade students for the seven school years from 2010-2011 to 2016-2017. Primary …

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Far-Infrared Bands In Plasmonic Metal-Insulator-Metal Absorbers Optimized For Long Wave Infrared, Rachel Evans Jan 2018

Far-Infrared Bands In Plasmonic Metal-Insulator-Metal Absorbers Optimized For Long Wave Infrared, Rachel Evans

Electronic Theses and Dissertations

Metal–insulator–metal (MIM) resonant absorbers comprise a conducting ground plane, a thin dielectric, and thin separated metal top-surface structures. Long-wave infrared (LWIR) fundamental absorptions are experimentally shown to be optimized for a ratio of dielectric thickness to top-structure dimension t/l > 0.08. The fundamental resonance wavelength is predicted by different analytic standing-wave theories to be ~2nl, where n is the dielectric refractive index. Thus, for the dielectrics SiO2, AlN, and TiO2, l values of a few microns give fundamentals in the 8-12 micron LWIR wavelength region. Agreement of observed fundamental resonance wavelength with theory is better for t/l > ~0.2. Harmonics at shorter …

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Impact Of Ionizing Radiation And Electron Injection On Carrier Transport Properties In Narrow And Wide Bandgap Semiconductors, Jonathan Lee Jan 2018

Impact Of Ionizing Radiation And Electron Injection On Carrier Transport Properties In Narrow And Wide Bandgap Semiconductors, Jonathan Lee

Electronic Theses and Dissertations

This study investigated the minority carrier properties of wide and narrow bandgap semiconductors. Included specifically are wide bandgap materials GaN and β-Ga2O3, and narrow bandgap InAs/GaSb type-II strain-layer superlattice. The importance of minority carrier behavior in bipolar device performance is utmost because it is the limiting component in current conduction. The techniques used to determine minority carrier properties include electron beam induced current (EBIC) and cathodoluminescence (CL) spectroscopy. The CL spectroscopy is complemented with time-resolved CL (TRCL) for direct measurement of carrier radiative recombination lifetime. The minority carrier properties and effect of high energy radiation is explored. The GaN TRCL …

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A Quasi-Experiment On The Degree To Which I-Ready Reading Instruction Predicted Florida State Assessment Scores For Low Performing Students Compared To Students On Grade Level, Ashley Pierce Jan 2018

A Quasi-Experiment On The Degree To Which I-Ready Reading Instruction Predicted Florida State Assessment Scores For Low Performing Students Compared To Students On Grade Level, Ashley Pierce

Electronic Theses and Dissertations

The purpose of this study was to determine the degree to which i-Ready® Reading Instruction (a computer adaptive testing program) predicted Florida Standards Assessment English Language Arts (FSA ELA) scores for low performing students (Level 1) compared to those who are on grade level (Level 3). Participants included students in seventh grade at a central Florida school district who participated in i-Ready® Reading Instruction and who had previously scored a Level 1 or Level 3 on the FSA ELA. A hierarchical multiple regression was run to determine the impact of the interaction effect between prior year FSA performance level and …

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A Causal Comparative Analysis Of A Computer Adaptive Mathematics Program Using Multilevel Propensity Score Matching, Justin Seabolt Jan 2018

A Causal Comparative Analysis Of A Computer Adaptive Mathematics Program Using Multilevel Propensity Score Matching, Justin Seabolt

Electronic Theses and Dissertations

The purpose of this study was to examine the effectiveness of a computer adaptive mathematics program, i-Ready® Mathematics Instruction in Central Florida School District (CFSD) using a variety of quantitative analyses. In particular, students in the fifth grade at CFSD were examined in relation to the gains made on their end-of-year statewide mathematics assessment, known as the Florida Standards Assessment (FSA Math). Per i-Ready®, students who use i-Ready® Mathematics Instruction for a minimum of 45 minutes per subject per week for at least 25 weeks show significantly greater gains than those who do not (Curriculum Associates, 2017b). Therefore, two propensity …

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Design And Production Of Calculus Assessments, Lorna Wenzel Jan 2018

Design And Production Of Calculus Assessments, Lorna Wenzel

Electronic Theses and Dissertations

The AP Calculus program at Green High School was not adequately preparing students for college level calculus as more than 80 percent of the students failed the AP exam. The students were concurrently receiving high marks on in-class assessments. Hence, the in-class assessments were not good indicators of students calculus understanding according to the AP standards. A needs assessment was conducted, focusing on the difference in high school and college calculus, how to assess calculus and where Green High School's assessments were falling short. More research was conducted to examine the college Board expectations of calculus learning. A content matrix …

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