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Power Distribution Of Terahertz Emission From Hexagonal Bscco Microstrip Antennas, Andrew E. Davis Jan 2017

Power Distribution Of Terahertz Emission From Hexagonal Bscco Microstrip Antennas, Andrew E. Davis

Honors Undergraduate Theses

We analyze the distribution of coherent terahertz radiation from a regular hexagonal microstrip antenna (MSA) made from the high-Tc superconductor Bi2Sr2CaCu2O8+x (BSCCO). We discuss the C6v symmetry of the solutions of the wave equation on a hexagonal domain and distinguish between the closed-form and non-closed-form solutions. The closed-form wavefunctions of the transverse magnetic (TM) electromagnetic cavity modes are presented and formulas for the radiated power arising from the uniform part of the AC Josephson current and from the resonant cavity modes are derived. The wavefunctions and angular distribution of radiation from …

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Improved Physiology And Psychosocial Well-Being For Children With Physical Disabilities Through Virtual Reality Immersion, Bethany D. Fralish Jan 2017

Improved Physiology And Psychosocial Well-Being For Children With Physical Disabilities Through Virtual Reality Immersion, Bethany D. Fralish

Honors Undergraduate Theses

The purpose of this case study was to examine the physiological and psychosocial effects of an immersive virtual reality (VR) system in a female, young adult with right side paralysis following a left hemisphere brain bleed in order to determine the usefulness of immersive VR for children with physical disabilities, in particular, cerebral palsy (CP). The current study consisted of six sessions over a span of three weeks, with each session lasting approximately 45 minutes. Physiological factors (upper body mobility, heart rate variability) were assessed via a hand use questionnaire and a heart rate monitor, while psychosocial factors (e.g. positive …

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Literature Review On The Use Of Nucleic Acid-Based Logic Gates For The Detection Of Human Diseases, Enrique J. Blanco Martinez Jan 2017

Literature Review On The Use Of Nucleic Acid-Based Logic Gates For The Detection Of Human Diseases, Enrique J. Blanco Martinez

Honors Undergraduate Theses

Conventional methods for diagnosis of human disease are, at times, limited in different regards including time requirement, either experimental or data processing, sensitivity, and selectivity. It is then that a Point of Care Criteria, which considers the true utility and usefulness of the device, is employed to propose new diagnostic devices capable of overcoming the aforementioned shortcomings of conventional tools. Nucleic acid, characterized for its predictable base-pairing nature, is considered to be a highly-selective, yet greatly modifiable device. Its behavior is then described through Boolean Logic, where “true” or “false” outputs are mathematically described as “1” and “0”, respectively. This …

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Micro-Spectroscopy Of Bio-Assemblies At The Single Cell Level, Jeslin Kera Jan 2017

Micro-Spectroscopy Of Bio-Assemblies At The Single Cell Level, Jeslin Kera

Honors Undergraduate Theses

In this thesis, we investigate biological molecules on a micron scale in the ultraviolet spectral region through the non-destructive confocal absorption microscopy. The setup involves a combination of confocal microscope with a UV light excitation beam to measure the optical absorption spectra with spatial resolution of 1.4 μm in the lateral and 3.6 μm in the axial direction. Confocal absorption microscopy has the benefits of requiring no labels and only low light intensity for excitation while providing a strong signal from the contrast generated by the attenuation of propagating light due to absorption. This enables spatially resolved measurements of single …

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Exploring The Multi-Touch Interaction Design Space For 3d Virtual Objects To Support Procedural Training Tasks, Sarah Holderness Jan 2017

Exploring The Multi-Touch Interaction Design Space For 3d Virtual Objects To Support Procedural Training Tasks, Sarah Holderness

Electronic Theses and Dissertations

Multi-touch interaction has the potential to be an important input method for realistic training in 3D environments. However, multi-touch interaction has not been explored much in 3D tasks, especially when trying to leverage realistic, real-world interaction paradigms. A systematic inquiry into what realistic gestures look like for 3D environments is required to understand how users translate real-world motions to multi-touch motions. Once those gestures are defined, it is important to see how we can leverage those gestures to enhance training tasks. In order to explore the interaction design space for 3D virtual objects, we began by conducting our first study …

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Dance Students At A Two Year College: Making Sense Of Their Academic, Cultural, And Social World, Benjamin Lopez Jan 2017

Dance Students At A Two Year College: Making Sense Of Their Academic, Cultural, And Social World, Benjamin Lopez

Electronic Theses and Dissertations

The purpose of this dissertation was to investigate the lived experiences of community college dance students. Previous research was examined to provide a more holistic picture of dancers during their college years and while in the workforce. The literature reviewed indicated that the emergence of dance as a field of study was controversial. Its beginnings were marked by debates concerning (a) the very definition of dance as a body of motion and a body of knowledge that includes a history and a philosophy as asserted by Dimondstein (1985), (b) its legitimate place within the academy (the perception that university dance …

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Design And Verification Of A Multi-Terawatt Ti-Sapphire Femtosecond Laser System, Patrick Roumayah Jan 2017

Design And Verification Of A Multi-Terawatt Ti-Sapphire Femtosecond Laser System, Patrick Roumayah

Electronic Theses and Dissertations

Ultrashort pulse lasers are well-established in the scientific community due to the wide range of applications facilitated by their extreme intensities and broad bandwidth capabilities. This thesis will primarily present the design for the Mobile Ultrafast High Energy Laser Facility (MU-HELF) for use in outdoor atmospheric propagation experiments under development at the Laser Plasma Laboratory at UCF. The system is a 100fs 500 mJ Ti-Sapphire Chirped-Pulse Amplification (CPA) laser, operating at 10 Hz. Some background on the generation of very high intensity optical pulses is also presented, alongside an overview of the physics of filamentation. As part of the design …

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Computational Approach To Electrocatalysis, Nagendra Dhakal Jan 2017

Computational Approach To Electrocatalysis, Nagendra Dhakal

Electronic Theses and Dissertations

The main objective of this work is to understand the theoretical basis of the working principle of the Hydrogen fuel cell. We seek the physical basis of the Rational Design Technique, the smart way of preselecting materials from the material-pool, implemented in our study anticipating highly promising electrocatalysts for promoting the conversion of chemical energy stored in hydrogen molecules into the electrical energy. It needs the understanding of the relationship among the compositions of the materials under consideration, their electronic structure and catalytic activities. We performed the first principle DFT calculations to achieve the goal. Our work is focused first …

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Mesoscopic Interactions In Complex Photonic Media, Roxana Rezvani Naraghi Jan 2017

Mesoscopic Interactions In Complex Photonic Media, Roxana Rezvani Naraghi

Electronic Theses and Dissertations

Mesoscale optics provides a framework for understanding a wide range of phenomena occurring in a variety of fields ranging from biological tissues to composite materials and from colloidal physics to fabricated nanostructures. When light interacts with a complex system, the outcome depends significantly on the length and time scales of interaction. Mesoscale optics offers the apparatus necessary for describing specific manifestations of wave phenomena such as interference and phase memory in complex media. In-depth understanding of mesoscale phenomena provides the required quantitative explanations that neither microscopic nor macroscopic models of light-matter interaction can afford. Modeling mesoscopic systems is challenging because …

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Inattentive Behavior In Boys With Adhd During Classroom Instruction: The Mediating Role Of Working Memory Processes, Sarah Orban Jan 2017

Inattentive Behavior In Boys With Adhd During Classroom Instruction: The Mediating Role Of Working Memory Processes, Sarah Orban

Electronic Theses and Dissertations

Children with ADHD exhibit clinically impairing inattentive behavior during classroom instruction and other cognitively demanding contexts. However, there have been surprisingly few attempts to validate anecdotal parent/teacher reports of intact sustained attention during 'preferred' activities such as watching movies. The current investigation addresses this omission, and provides an initial test of how ADHD-related working memory deficits contribute to inattentive behavior during classroom instruction. Boys ages 8-12 (M=9.62, SD=1.22) with ADHD (n=32) and typically developing children (TD; n=30) completed a counterbalanced series of working memory tests and two videos on separate assessment days: an analogue math instructional video, and a non-instructional …

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Design Of A Hydrogen-Filled Hollow-Core Fiber Raman Laser, Yangyang Qin Jan 2017

Design Of A Hydrogen-Filled Hollow-Core Fiber Raman Laser, Yangyang Qin

Electronic Theses and Dissertations

The purpose of this study is to investigate the design of a Raman fiber laser based on a molecule hydrogen-filled hollow-core fiber with non-touching single ring of capillaries structure. O-hydrogen vibrational frequency shift of 4155 cm-1 and rotational frequency shift of 587 cm-1 were employed to generate Raman scattering from a 1064nm pump source. A thorough exploration was made to show how all Raman fiber laser components made up: gas chamber, hollow-core fibers, windows. The whole process of chamber design, modification and fabrication were demonstrated. Besides, two kinds of anti-resonant hollow-core fibers were studied and tested. The transmission and loss …

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The Influences Of Roles And Support Systems On The Baccalaureate Degree Attainment Of Nontraditional Learners, Shirdricka Roberts Jan 2017

The Influences Of Roles And Support Systems On The Baccalaureate Degree Attainment Of Nontraditional Learners, Shirdricka Roberts

Electronic Theses and Dissertations

The purpose of the research study was to examine the influences of roles and support systems on the baccalaureate attainment of nontraditional learners. A qualitative bounded case study was conducted that include ten face-to-face interviews with nontraditional learners attending the same University during the same time period. The study provided a brief overview on the challenges, support systems, and motivations of these nontraditional learners. Theories used to frame the study's conceptual framework and address its research questions included Biddle's (1979) Role Theory, McClusky's Theory of Margin, Load and Power (1971) and Tinto's (1975, 1993, 2012) and Bean and Metzner's (1985) …

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Enhancement Of Bandwidth And Laser Deflection Angle Of Acousto-Optic Deflectors By Dynamic Two-Dimensional Refractive Index Modulation, Tiansi Wang Jan 2017

Enhancement Of Bandwidth And Laser Deflection Angle Of Acousto-Optic Deflectors By Dynamic Two-Dimensional Refractive Index Modulation, Tiansi Wang

Electronic Theses and Dissertations

Acousto-Optic Deflectors (AODs) are inertialess optical solid state devices that have advantages over conventional mechanically controlled mirror-based deflectors in numerous scientific and industrial applications. These applications include fluorescence microscopy, sensing, variable-focus lens, photolithography and laser materials processing. AODs are currently operated with a single piezoelectric transducer that modulates the refractive index only in one direction. This operating principle limits the performance of AODs to a narrow acoustic bandwidth of the transducer and a small angle of laser deflection governed by the Bragg diffraction. To overcome these two limitations, the operation of AODs with phased array ultrasonic transducers is analyzed in …

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Timoshenko Beam Viscous Damping Model For Spacecraft Cabling Dynamics, Brandi Mcpherson Jan 2017

Timoshenko Beam Viscous Damping Model For Spacecraft Cabling Dynamics, Brandi Mcpherson

Electronic Theses and Dissertations

With the increasing data handling and power requirements of today's spacecraft, accurately modeling the effects of cabling on spacecraft structural dynamics has become an increasingly important part of the design process. During testing, spacecraft cabling produces a damping effect on the system dynamics; however, current models often overpredict this response in higher frequency modes and produce unrealistic damping values. Previous models incorporated structural and viscous damping terms into Euler-Bernoulli and shear beams; this thesis presents a viscous damping model for Timoshenko beams that can accurately capture the effects of both spacecraft wiring and harnesses during the design phase. Damping in …

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Code Park: A New 3d Code Visualization Tool And Ide, Pooya Khaloo Jan 2017

Code Park: A New 3d Code Visualization Tool And Ide, Pooya Khaloo

Electronic Theses and Dissertations

We introduce Code Park, a novel tool for visualizing codebases in a 3D game-like environment. Code Park aims to improve a programmer's understanding of an existing codebase in a manner that is both engaging and fun to be appealing especially for novice users such as students. It achieves these goals by laying out the codebase in a 3D park-like environment. Each class in the codebase is represented as a 3D room-like structure. Constituent parts of the class (variable, member functions, etc.) are laid out on the walls, resembling a syntax-aware "wallpaper". The users can interact with the codebase using an …

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A Process Evaluation Of A Family Involvement Program At A Title I Elementary School, Maria Camacho Moody Jan 2017

A Process Evaluation Of A Family Involvement Program At A Title I Elementary School, Maria Camacho Moody

Electronic Theses and Dissertations

Parental or family involvement in student academics has been an on-going topic for researchers. There is a need for studies to be conducted on parental involvement program implementation in order to determine if there is an impact on student academics when school, family, and community partnership programs are in place. For this study, a process evaluation was conducted on a parental or family involvement program newly developed and implemented at a Title I elementary school in an urban setting. The purpose of this mixed-methods process evaluation was to (a) document how the program was implemented, (b) examine the progress toward …

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Faculty Professional Development For Improving Hybrid Course Success, Amanda Saxman Jan 2017

Faculty Professional Development For Improving Hybrid Course Success, Amanda Saxman

Electronic Theses and Dissertations

The purpose of this Dissertation in Practice was to investigate the inconsistent success rates in hybrid courses at a Florida college. Results from a pilot study and faculty survey revealed a need for a training program specific to hybrid instructors. The researchers created a training program composed of a framework and a professional development course, designed to promote consistency in how instructors create and implement their hybrid courses. The framework consists of six research-based standards which aided in the creation of six learning modules for the professional development course. These modules were: course alignment, face-to-face active learning, online resources, formative …

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Examination Of The Challenges Faced By Foreign-Born Students In A State College That May Prolong/Prevent Graduation., Modupe Soremi Jan 2017

Examination Of The Challenges Faced By Foreign-Born Students In A State College That May Prolong/Prevent Graduation., Modupe Soremi

Electronic Theses and Dissertations

This research study stems from several reports indicating the increasing competitiveness of the world economy, the requirement of at least an associate degree in the fastest growing jobs in the U.S. labor market, and the unprecedented increase in the foreign-born population in the United States since the 1970s (U.S. Census Bureau Web, 2016; Bureau of Labor Statistics, Employment Projection, 2009; President's Council of Economic Advisers (CEA), 2009). Understanding the challenges faced by foreign-born students at state colleges will create an avenue for recommending solutions to many these challenges, thereby increasing their educational attainment and economic productivity, hence preparing more Americans …

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A Comparison Of Sixth-, Seventh-, And Eighth-Grade Student Outcomes In Schools Configured K-8 Elementary Versus 6-8 Middle Schools As Measured By State Standardized Tests, Student Discipline Referrals, And Student Attendance, Jessica Kelce Jan 2017

A Comparison Of Sixth-, Seventh-, And Eighth-Grade Student Outcomes In Schools Configured K-8 Elementary Versus 6-8 Middle Schools As Measured By State Standardized Tests, Student Discipline Referrals, And Student Attendance, Jessica Kelce

Electronic Theses and Dissertations

The purpose of this study was to examine the differences in sixth-, seventh-, and eighth-grade students' outcomes in relation to school configuration, specifically K-8 elementary schools as compared to 6-8 middle schools. Student outcomes focused on in this study were standardized test scores, number of out-of-school suspensions, and number of days absent. Race and gender served as moderator variables for all research questions. Quantitative data were obtained from a large central Florida school district and included 2016 Florida Standards Assessment scale scores in English Language Arts, Mathematics, and Algebra 1 End-of-Course Examinations, 2015 Florida Standards Assessment scale scores in English …

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English Language Arts Preservice And Inservice Teacher's Knowledge About How To Use Etextbooks And Open Educational Resources To Support Students' Comprehension: A Case Study, Lourdes Smith Jan 2017

English Language Arts Preservice And Inservice Teacher's Knowledge About How To Use Etextbooks And Open Educational Resources To Support Students' Comprehension: A Case Study, Lourdes Smith

Electronic Theses and Dissertations

The focus of this qualitative, descriptive case study was to (a) investigate the knowledge English Language Arts preservice and inservice teachers had about eTextbooks and Open Educational Resources (OERs) and (b) how they planned to use that knowledge to develop their current/future 6-12 grade students' comprehension and content knowledge. Included within the study were specifics regarding how eTextbooks and OERs can be used to support adolescent learners and how online comprehension skills can be developed. Data were analyzed in order to determine themes related to the use and planning for eTextbooks and OERs in the secondary ELA classroom. Data sources …

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Signal Processing With Fourier Analysis, Novel Algorithms And Applications, Alam Syed Jan 2017

Signal Processing With Fourier Analysis, Novel Algorithms And Applications, Alam Syed

Electronic Theses and Dissertations

Fourier analysis is the study of the way general functions may be represented or approximated by sums of simpler trigonometric functions, also analogously known as sinusoidal modeling. The original idea of Fourier had a profound impact on mathematical analysis, physics and engineering because it diagonalizes time-invariant convolution operators. In the past signal processing was a topic that stayed almost exclusively in electrical engineering, where only the experts could cancel noise, compress and reconstruct signals. Nowadays it is almost ubiquitous, as everyone now deals with modern digital signals. Medical imaging, wireless communications and power systems of the future will experience more …

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An Analysis Of Robot-Assisted Social-Communication Instruction For Young Children With Autism Spectrum Disorders, Claire Donehower Jan 2017

An Analysis Of Robot-Assisted Social-Communication Instruction For Young Children With Autism Spectrum Disorders, Claire Donehower

Electronic Theses and Dissertations

Social and communication deficits are a core feature of Autism Spectrum Disorders (ASD) and impact an individual's ability to be a full participant in their school environment and community. The increase in number of students with ASD in schools combined with the use of ineffective interventions have created a critical need for quality social-communication instruction in schools for this population. Technology-based interventions, like robots, have the potential to greatly impact students with disabilities, including students with ASD who tend to show increased interest and engagement in technology-based tasks and materials. While research on the use of robots with these learners …

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The Effects Of An Online Coaching Model On Secondary Co-Teaching Teams In Algebra, Jennifer Holbrook Jan 2017

The Effects Of An Online Coaching Model On Secondary Co-Teaching Teams In Algebra, Jennifer Holbrook

Electronic Theses and Dissertations

Students with disabilities are included into general education classrooms to receive instruction with increasing frequency. To facilitate this inclusion, co-teaching is frequently used as a service delivery model (Friend, 2016; Murawski & Bernhardt, 2016). Co-teaching is a service delivery model where a general and special education teacher work in a collaborative environment to instruct students with and without disabilities (Friend, 2007, 2016). In using this approach, teachers are not always provided with the professional development (PD) necessary to effectively facilitate the co-teaching partnership. In this study, the researcher conducted a quasi-experimental study to examine the effects of a 10-minute online …

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Sampling And Reconstruction Of Spatial Signals, Cheng Cheng Jan 2017

Sampling And Reconstruction Of Spatial Signals, Cheng Cheng

Electronic Theses and Dissertations

Digital processing of signals f may start from sampling on a discrete set Γ, f →(f(ϒη))ϒηεΓ. The sampling theory is one of the most basic and fascinating topics in applied mathematics and in engineering sciences. The most well known form is the uniform sampling theorem for band-limited/wavelet signals, that gives a framework for converting analog signals into sequences of numbers. Over the past decade, the sampling theory has undergone a strong revival and the standard sampling paradigm is extended to non-bandlimited signals including signals in reproducing kernel spaces (RKSs), signals with finite rate of innovation (FRI) and sparse signals, and …

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Noise, Stability, And Linewidth Performance Of 10-Ghz Optical Frequency Combs Generated From The Nested Cavity Architecture, Kristina Bagnell Jan 2017

Noise, Stability, And Linewidth Performance Of 10-Ghz Optical Frequency Combs Generated From The Nested Cavity Architecture, Kristina Bagnell

Electronic Theses and Dissertations

Optical frequency combs with wide mode spacing and low timing jitter are relied upon for both time domain and frequency domain applications. It has been previously demonstrated that surrounding a low-Q semiconductor laser chip with a long external fiber cavity and inserting a high finesse Fabry–Pérot etalon into this cavity can produce a mode-locked laser with the desired high repetition rate and narrow optical mode linewidths which are of benefit to applications like photonic analog-to-digital conversion and astronomical spectrograph calibration. With this nested cavity architecture, the quality factor of the resonator is effectively determined by the product of the individual …

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Spin And Charge Transport In Graphene Based Devices, Marta Anguera Antonana Jan 2017

Spin And Charge Transport In Graphene Based Devices, Marta Anguera Antonana

Electronic Theses and Dissertations

The present dissertation is comprehended in two main parts. The first part is focused on understanding the mechanisms behind spin current to charge current interconversion (i.e. the spin Hall angle), where the spin current is generated by means of spin pumping. The measurement of a positive spin Hall angle of magnitude 0.004 in Uranium is reported in Chapter 2. These results support the idea that the electronic configuration may be at least as important as the atomic number in governing spin Hall effects. In Chapter 3, the design of a spintronics device designed to interconvert charge and spin currents in …

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Data Representation In Machine Learning Methods With Its Application To Compilation Optimization And Epitope Prediction, Yevgeniy Sher Jan 2017

Data Representation In Machine Learning Methods With Its Application To Compilation Optimization And Epitope Prediction, Yevgeniy Sher

Electronic Theses and Dissertations

In this dissertation we explore the application of machine learning algorithms to compilation phase order optimization, and epitope prediction. The common thread running through these two disparate domains is the type of data being dealt with. In both problem domains we are dealing with categorical data, with its representation playing a significant role in the performance of classification algorithms. We first present a neuroevolutionary approach which orders optimization phases to generate compiled programs with performance superior to those compiled using LLVM's -O3 optimization level. Performance improvements calculated as the speed of the compiled program's execution ranged from 27% for the …

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An Sos Conceptual Model, Lvc Simulation Framework, And A Prototypical Implementation Of Unmanned System Interventions For Nuclear Power Plant Disaster Preparedness, Response, And Mitigation, Matthew Davis Jan 2017

An Sos Conceptual Model, Lvc Simulation Framework, And A Prototypical Implementation Of Unmanned System Interventions For Nuclear Power Plant Disaster Preparedness, Response, And Mitigation, Matthew Davis

Electronic Theses and Dissertations

Nuclear power plant disasters can have severe and far-reaching consequences, thus emergency managers and first responders from utility owners to the DoD must be prepared to respond to and mitigate effects protecting the public and environment from further damage. Rapidly emerging unmanned systems promise significant improvement in response and mitigation of nuclear disasters. Models and simulations (M&S) may play a significant role in improving readiness and reducing risks through its use in planning, analysis, preparation training, and mitigation rehearsal for a wide spectrum of derivate scenarios. Legacy nuclear reactor M&S lack interoperability between themselves and avatar or agent-based simulations of …

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The Effects Of The Vocabulary Scenario Technique- English Learner Peer Protocol On Ninth Grade English Learners Who Struggle With Literacy, Kimmerly Harrell Jan 2017

The Effects Of The Vocabulary Scenario Technique- English Learner Peer Protocol On Ninth Grade English Learners Who Struggle With Literacy, Kimmerly Harrell

Electronic Theses and Dissertations

Recent data have shown that only 34% of eighth graders and 37% of 12th graders were reading at or above proficiency (NAEP, 2015). A total of 21% of Hispanic eighth graders were reading at or above proficiency, and only 25% of Hispanic 12th graders were reading at or above proficiency. Of African-American students, 16% of eighth graders and 17% of 12th graders were reading at or above proficiency. In order for adolescents to become successful and productive adults, they need to acquire advanced literacy skills. Many of these demands require an education beyond high school (Rothman, 2012). Concern for English …

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The Effectiveness Of Using Florida Virtual High School Course Data During The College Admission Process As A Predictor Of Degree Completion Within Six Years., Michael Callahan Jan 2017

The Effectiveness Of Using Florida Virtual High School Course Data During The College Admission Process As A Predictor Of Degree Completion Within Six Years., Michael Callahan

Electronic Theses and Dissertations

The admission process at higher education institutions has not adapted for online distance education classes taken in high schools, such as those offered by the Florida Virtual School. The purpose of this study was to determine whether online distance education courses taken in high school can serve as an indicator of student success in post-secondary education. An honors program at a large public research university provided the data examined. This honors program stored online distance education information in a database, which allowed for analysis. Presently, the institution's primary undergraduate admission office does not collect or store this type of information. …

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