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Title: Life, Death, and Awakening: As Seen in Reflections of Nature.
Creator: Parks, Diane, Poindexter, Carla, Kim, Joo, Kovach, Keith, Price, Mark, University of Central Florida
Abstract / Description: My objective, in undertaking this three year MFA degree has been to create and produce metaphorical paintings which communicate my deepest feelings about my personal experiences of life, death, and nature using various types of landscapes as subject matter. My goal has been to explore many processes of painting, using a range of color palettes to suggest and inspire emotional responses from viewers that are similar to my own. Ultimately my intention has been to share feelings of empathy...
Show moreMy objective, in undertaking this three year MFA degree has been to create and produce metaphorical paintings which communicate my deepest feelings about my personal experiences of life, death, and nature using various types of landscapes as subject matter. My goal has been to explore many processes of painting, using a range of color palettes to suggest and inspire emotional responses from viewers that are similar to my own. Ultimately my intention has been to share feelings of empathy between myself and a viewer through the art I've produced. This thesis body of work chronicles my three year journey.
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Date Issued: 2018
Identifier: CFE0007072, ucf:52002
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0007072

Title: TUNABLE NANOSTRUCTURE ANTI-REFLECTIVE COATINGS.
Creator: Brinley, Erik, Seal, Sudipta, University of Central Florida
Abstract / Description: Research was conducted on broadband, anti-reflective coatings for fused silica and chalcogenide substrates in the infrared region of light. Using chemical preparation to create nano-porous through nano-particle based sol-gel solutions, the alteration of optical properties including refractive index and optical thickness was conducted. The nano-particles can modify the coating surface to allow only zero-order diffracted wave propagation reducing scattering while a partially graded profile of...
Show moreResearch was conducted on broadband, anti-reflective coatings for fused silica and chalcogenide substrates in the infrared region of light. Using chemical preparation to create nano-porous through nano-particle based sol-gel solutions, the alteration of optical properties including refractive index and optical thickness was conducted. The nano-particles can modify the coating surface to allow only zero-order diffracted wave propagation reducing scattering while a partially graded profile of refractive index due surface evaporation lessened the precise phase relations of typical homogeneous coatings. My study of silica and titania sol-gel, and hybrid mixtures of the two were used to obtain the optical properties of the materials. The choice of experiments were rooted in theoretically calculated values, and parameters were selected based on quarter wavelength thickness and square root of refractive index theories of destructive cancellation of rebound waves for reduction of reflection. The fused silica system required anti-reflection in the region of 1.0-1.6 micrometer wavelength of the near-infrared. The base, uncoated transmission in this region is ~91%. A maximum transmission of 98% and no less than 97.3% over the entire region of interest was achieved. The chalcogenide system required anti-reflection in the regions of 1.0-1.6 and 3.5-5.0 micrometers of the near- and mid-infrared. The base, uncoated transmission of these regions is 61.9%. A maximum of 95% transmission was achieved for the 1.0-1.6 region and 87% for the 3.5-5.0 region. Solutions and coatings were characterized by Scanning Electron Microscope, Atomic Force Microscopy, X-ray Photoelectron Spectroscopy, particle size, elipsometry, UV-Vis-NIR, and FTIR to reveal the science behind the development and synthesis of nano optical coatings.
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Date Issued: 2007
Identifier: CFE0001641, ucf:47247
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001641

Title: THE MIRRORED WALLS OF REALITY:A JOURNAL OF SHATTERED REFLECTION.
Creator: Bryant, Lisa, Ingram, Kate, University of Central Florida
Abstract / Description: ABSTRACT Theatre in its most crude, poignant, and honest form exists as the unapologetic mirror of our world. It houses the piercing reflections of mankind's hope, fear, self-doubt, passion, joy, despair, brilliance, destitution, and desire. It becomes the image of all that man hopes to be, yearns to achieve, and knows he has destroyed. Theatrical performance is without equal in its ability to conjure visible truth from the reflection man sees everyday and hopelessly fails to recognize....
Show moreABSTRACT Theatre in its most crude, poignant, and honest form exists as the unapologetic mirror of our world. It houses the piercing reflections of mankind's hope, fear, self-doubt, passion, joy, despair, brilliance, destitution, and desire. It becomes the image of all that man hopes to be, yearns to achieve, and knows he has destroyed. Theatrical performance is without equal in its ability to conjure visible truth from the reflection man sees everyday and hopelessly fails to recognize. Ultimately, theatre demands that man see himself without the masks of excuse, ignorance, or makeup. It is the vision of this journey to honor theatre's mask-less demand. Through the development of a multi-scene theatrical performance; the collection and analysis of relevant research material; and the cultivation of a comprehensive journal outlining the processes, the challenges, and the revelations that will travel the same road--from the cluttered moments of conception to the still air of an empty room after an exhausting final bow--only a mirror will remain. Each component--production, research, and journal--will function as equally essential elements. They will illuminate the evolution of fully realized theatre and detail the composition of a common theatrical message: Truth is both the seed of desperation and discovery.
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Date Issued: 2006
Identifier: CFE0001166, ucf:46872
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001166

Title: Reflectance Transformation Imaging: Documenting Incised Graffiti in the Maya Lowlands.
Creator: Gill, Rachel, Kovacevich, Brigitte, Branting, Scott, Callaghan, Michael, University of Central Florida
Abstract / Description: In the late 19th century, explorers identified graffiti etched in stucco walls of residences, palaces, and temples in the Maya Lowlands. By the mid-20th century, scholars acknowledged that the ancient Maya produced these incised images. Today, archaeologists struggle with documenting these instances of graffiti with precision and accuracy, often relying solely on to-scale line drawings to best represent the graffitied image they see before them. These images can be complex, multilayered, and...
Show moreIn the late 19th century, explorers identified graffiti etched in stucco walls of residences, palaces, and temples in the Maya Lowlands. By the mid-20th century, scholars acknowledged that the ancient Maya produced these incised images. Today, archaeologists struggle with documenting these instances of graffiti with precision and accuracy, often relying solely on to-scale line drawings to best represent the graffitied image they see before them. These images can be complex, multilayered, and difficult to see so identifying the sequence of creation of the incisions can be challenging. Reflectance Transformation Imaging (RTI) is a method that uses a moving light source and photography in order to visualize, interact with, and analyze a three-dimensional object in a two-dimensional image. Performed on a series of 20 unique graffiti from the Maya archaeological site of Holtun, RTI showed promise as a viable technique for documenting and preserving graffiti as cultural heritage and for providing new information about an enigmatic aspect of Maya archaeology. Additionally, RTI is compared to other common methods used to document incised graffiti in the Maya lowland area including to-scale line drawing, tracing, photogrammetry, and scanning to show the new and unique information and data that can be gathered from this method. Finally, RTI is a low-cost, low-maintenance alternative data-gathering method for highly remote archaeological projects where other technology is difficult to obtain and use in the field setting.
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Date Issued: 2018
Identifier: CFE0007005, ucf:52049
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0007005

Title: USING NARRATIVE TO IMPROVE REFLECTION IN TECHNICAL COMMUNICATION.
Creator: Brkich, Carrie, Flammia, Madelyn, University of Central Florida
Abstract / Description: This thesis explores why instructors should use narrative intentionally and effectively with reflection to better understand adult students' perceptions of experiential learning activities in technical communication. The frequent use of narrative in technical discourse reminds us that the tone of technical texts is often appropriately informal, personable, and reflective. A closer analysis of narratives provides instructors with valuable opportunities to learn more about the motivations for...
Show moreThis thesis explores why instructors should use narrative intentionally and effectively with reflection to better understand adult students' perceptions of experiential learning activities in technical communication. The frequent use of narrative in technical discourse reminds us that the tone of technical texts is often appropriately informal, personable, and reflective. A closer analysis of narratives provides instructors with valuable opportunities to learn more about the motivations for and barriers to learning for adult students and to better understand how these students situate themselves in larger social and cultural narratives. Narrative serves many purposes in technical communication. Not only does narrative add a human element to technical discourse, but it also invites interrogation and inquiry into the technical communicator's decision-making process. For these reasons, narrative is commonly paired with reflection exercises in experiential learning programs as a way for students to make sense of their learning experiences. If instructors can capture the essence of how adult students make sense of their learning experiences, they can determine if experiential learning is an effective pedagogical approach to teaching technical communication to adult students. Using examples of ongoing, initial and summative, and alternative reflection exercises, I illustrate how narrative can be used to facilitate the learning process in adult students and gain access to these students' perceptions of experiential learning activities in technical communication.
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Date Issued: 2011
Identifier: CFE0003695, ucf:48827
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0003695

Title: Development of the Strategy to Select optimum Reflective Cracking Mitigation Methods for the Hot-Mix Asphalt Overlays in Florida.
Creator: Maherinia, Hamid, Nam, Boo Hyun, Behzadan, Amir, Tatari, Mehmet, University of Central Florida
Abstract / Description: Hot Mix Asphalt (HMA) overlay is a major rehabilitation treatment for the existing deteriorated pavements (both flexible and rigid pavements). Reflective cracking (RC) is the most common distress type appearing in the HMA overlays which structurally and functionally degrades the whole pavement structure, especially under high traffic volume. Although many studies have been conducted to identify the best performing RC mitigation technique, the level of success varies from premature failure to...
Show moreHot Mix Asphalt (HMA) overlay is a major rehabilitation treatment for the existing deteriorated pavements (both flexible and rigid pavements). Reflective cracking (RC) is the most common distress type appearing in the HMA overlays which structurally and functionally degrades the whole pavement structure, especially under high traffic volume. Although many studies have been conducted to identify the best performing RC mitigation technique, the level of success varies from premature failure to good performance in the field. In Florida, Asphalt Rubber Membrane Interlayers (ARMIs) have been used as a RC mitigation technique but its field performance has not been successful. In this study, the best performing means to mitigate RC in the overlays considering Florida's special conditions have been investigated. The research methodology includes (1) extensive literature reviews regarding the RC mechanism and introduced mitigation options, (2) nationwide survey for understanding the current practice of RC management in the U.S., and (3) the development of decision trees for the selection of the best performing RC mitigation method. Extensive literature reviews have been conducted to identify current available RC mitigation techniques and the advantages and disadvantages of each technique were compared. Lesson learned from the collected case studies were used as input for the selection of the best performing RC mitigation techniques for Florida's roads. The key input parameters in selecting optimum mitigation techniques are: 1) overlay characterization, 2) existing pavement condition, 3) base and subgrade structural condition, 4) environmental condition and 5) traffic level. In addition, to understand the current practices how reflective cracking is managed in each state, a nationwide survey was conducted by distributing the survey questionnaire (with the emphasis on flexible pavement) to all other highway agencies. Based on the responses, the most successful method of treatment is to increase the thickness of HMA overlay. Crack arresting layer is considered to be in the second place among its users. Lack of cost analysis and low rate of successful practices raise the necessity of conducting more research on this subject.Considering Florida's special conditions (climate, materials, distress type, and geological conditions) and the RC mechanism, two RC mitigation techniques have been proposed: 1) overlay reinforcement (i.e. geosynthetic reinforcement) for the existing flexible pavements and 2) Stress Absorbing Membrane Interlayer (SAMI) for the existing rigid pavements. As the final products of this study, decision trees to select an optimum RC mitigation technique for both flexible and rigid pavements were developed. The decision trees can provide a detailed guideline to pavement engineer how to consider the affecting parameters in the selection of RC mitigation technique.
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Date Issued: 2013
Identifier: CFE0005108, ucf:50753
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0005108

Title: Childhood Maltreatment and Mother-Young Child Attachment: Examining Interactions among Attachment, Depression, Reflective Functioning, Parenting Behaviors, and Young Children's Outcomes in Mothers with Histories of Childhood Maltreatment.
Creator: Khan, Maria, Renk, Kimberly, Paulson, Daniel, Sims, Valerie, University of Central Florida
Abstract / Description: Although previous research identified mothers who experienced childhood maltreatment as exhibiting an especially heightened risk for attachment difficulties with their own young children, evidence regarding the mechanisms of action driving this relationship have been lacking. Thus, the current study introduced mothers' depressive symptoms and the novel construct of reflective functioning as potential mediators to help explain the relationship between mothers' childhood maltreatment...
Show moreAlthough previous research identified mothers who experienced childhood maltreatment as exhibiting an especially heightened risk for attachment difficulties with their own young children, evidence regarding the mechanisms of action driving this relationship have been lacking. Thus, the current study introduced mothers' depressive symptoms and the novel construct of reflective functioning as potential mediators to help explain the relationship between mothers' childhood maltreatment experiences and patterns of insecure (i.e., anxious, avoidant, and disorganized) mother-young child attachment. The current study included a community sample of 146 mothers with children who ranged in age from 1(&)#189;-to 5-years. Mothers provided ratings of their own childhood maltreatment experiences, attachment with their young children, depressive symptoms, reflective functioning, parenting behaviors and attributions, and young children's problems. Correlational analyses displayed significant associations among the variables of interest. Additionally, mediational analyses indicated that mothers' depressive symptoms mediated the relationship between mothers' childhood maltreatment experiences and patterns of insecure mother-young child attachment. Given that mothers' childhood maltreatment experiences failed to predict reflective functioning, the mediational role of reflective functioning was unsupported. Further, mothers' reflective functioning mediated the relationship between mothers' depressive symptoms and patterns of mother-young child insecure attachment. Finally, hierarchical regression analyses showed that mothers' adverse childhood experiences and depressive symptoms uniquely predicted their young children's internalizing and externalizing problems. These data suggested that the psychological consequences resulting from adverse childhood experiences may be more damaging to mothers' attachment with their young children than mothers' adverse childhood experiences alone. Moreover, these findings suggested that mothers' depressive symptoms and reflective functioning work together in predicting mother-young child attachment. Altogether, these results demonstrated the importance for promoting trauma-informed parenting interventions for facilitating secure emotional connections between mothers and young children, especially in mothers with childhood traumatic experiences themselves.
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Date Issued: 2017
Identifier: CFE0006753, ucf:51860
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006753

Title: Childhood Trauma, Reflective Functioning and Attributions, Self-Efficacy, and Perceived Parenting Competence: What Happens When the Traumatized Child Grows Up and Becomes a Mother?.
Creator: Cunningham, Annelise, Renk, Kimberly, Paulson, Daniel, Sims, Valerie, University of Central Florida
Abstract / Description: Previous research documented the relationship between self-efficacy and perceived parenting competence. Further, previous evidence supported the cognitive, emotional, and behavioral consequences of early exposure to trauma. To build on these previously noted relationships, the present study examined the relationships among reflective functioning and attributions, self-efficacy, and perceived parenting competence, with self-efficacy serving as a mediating variable. Specifically, this study...
Show morePrevious research documented the relationship between self-efficacy and perceived parenting competence. Further, previous evidence supported the cognitive, emotional, and behavioral consequences of early exposure to trauma. To build on these previously noted relationships, the present study examined the relationships among reflective functioning and attributions, self-efficacy, and perceived parenting competence, with self-efficacy serving as a mediating variable. Specifically, this study sought to focus on the cognitive variables associated with mothers' perceived self-efficacy and parenting competence and how those variables interact differently when early exposure to trauma is present. As part of this study, a national community sample of 126 culturally diverse mothers of young children who were between the ages of 1(&)#189;- to 5-years rated their own reflective functioning, attributions, self-efficacy, and perceived parenting competence as well as their young children's emotional and behavioral functioning. Correlational analyses showed significant relationships among the variables of interest. Further, mediation analyses indicated that, for the overall sample, mothers' self-efficacy mediated the relationship between both mothers' reflective functioning and attributions and perceived parenting competence. Interestingly, a varying relationship among reflective functioning was found among mothers with a trauma history in comparison to the total sample. Additionally, hierarchical regression analyses demonstrated that, for both samples, mothers' reflective functioning, attributions, self-efficacy, and perceived parenting competence collectively predicted young children's emotional and behavioral functioning. Lastly, through an auxiliary hypothesis, a curvilinear relationship was identified between mothers' perceived self-efficacy and parenting competence. Overall, this study contributed information regarding the importance of self-efficacy as a mechanism through which reflective functioning and attributions may potentially be related to perceived parenting competence. Accordingly, these findings suggested that mothers' perceptions about their own abilities may be a potentially important point of intervention.
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Date Issued: 2016
Identifier: CFE0006092, ucf:51191
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006092

Title: A Look to Burst the Brightest Neon Hearts: Attempts.
Creator: Fershtman, Eric, Poissant, David, Thaxton, Terry, Bartkevicius, Jocelyn, University of Central Florida
Abstract / Description: A Look to Burst the Brightest Neon Hearts is an inquiry, via constellation of stories diffuse in structure and subject matter, into the various (and really weird) phenomena comprising contemporary American existence. Cumulatively, the stories seek to: (1) kick up, like bottom feeders searching biogenous sediment, an underlying value system, and (2) explore how language both breastfeeds and like, weans this value system(-)e.g., what dark matter is it that tethers bromances to reality TV?...
Show moreA Look to Burst the Brightest Neon Hearts is an inquiry, via constellation of stories diffuse in structure and subject matter, into the various (and really weird) phenomena comprising contemporary American existence. Cumulatively, the stories seek to: (1) kick up, like bottom feeders searching biogenous sediment, an underlying value system, and (2) explore how language both breastfeeds and like, weans this value system(-)e.g., what dark matter is it that tethers bromances to reality TV? Quantum mechanics to pop music? How can a country be responsible for both the world's highest incarceration rates, and OKCupid? These stories also explore various American conceptions and embodiments of love, plotting out a strange attractor of cultural reflection and refraction.
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Date Issued: 2014
Identifier: CFE0005492, ucf:50331
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0005492

Title: CLASSICAL SIZE EFFECT IN CU THIN FILMS: IMPACT OF SURFACE AND GRAIN BOUNDARY SCATTERING ON RESISTIVITY.
Creator: Sun, Tik, Coffey, Kevin, University of Central Florida
Abstract / Description: Surface and grain boundary electron scattering contribute significantly to resistivity as the dimensions of polycrystalline metallic conductors are reduced to, and below, the electron mean free path. A quantitative measurement of the relative contributions of surface and grain boundary scattering to resistivity is very challenging, requiring not only the preparation of suitably small conductors having independent variation of the two relevant length scales, namely, the sample critical...
Show moreSurface and grain boundary electron scattering contribute significantly to resistivity as the dimensions of polycrystalline metallic conductors are reduced to, and below, the electron mean free path. A quantitative measurement of the relative contributions of surface and grain boundary scattering to resistivity is very challenging, requiring not only the preparation of suitably small conductors having independent variation of the two relevant length scales, namely, the sample critical dimension and the grain size, but also independent experimental quantification of these two length scales. In most work to date the sample grain size has been either assumed equal to conductor dimension or measured for only a small number of grains. Thus, the quantification of the classical size effect still suffers from an uncertainty in the relative contributions of surface and grain boundary scattering. In this work, a quantitative analysis of both surface and grain boundary scattering in Cu thin films with independent variation of film thickness (27 nm to 158 nm) and grain size (35 nm to 425 nm) in samples prepared by sub-ambient temperature film deposition followed by annealing is reported. Film resistivities of carefully characterized samples were measured at both room temperature and at 4.2 K and were compared with several scattering models that include the effects of surface and grain boundary scattering. Grain boundary scattering is found to provide the strongest contribution to the resistivity increase. However, a weaker, but significant, role is also observed for surface scattering. Several of the published models for grain boundary and surface scattering are explored and the Matthiessen's rule combination of the Mayadas and Shatzkes' model of grain boundary scattering and Fuchs and Sondheimer's model of surface scattering resistivity contributions is found to be most appropriate. It is found that the experimental data are best described by a grain boundary reflection coefficient of 0.43 and a surface specularity coefficient of 0.52. This analysis finds a significantly lower contribution from surface scattering than has been reported in previous works, which is in part due to the careful quantitative microstructural characterization of samples performed. The data does suggest that there is a roughness dependence to the surface scattering, but this was not conclusively demonstrated. Voids and impurities were found to have negligible impact on the measured resistivities of the carefully prepared films.
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Date Issued: 2009
Identifier: CFE0002959, ucf:47949
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0002959

Title: The Feminine Margin: The Re-Imagining of One Professor's Rhetorical Pedagogy--A Curriculum Project.
Creator: Alvarez, Camila, Brenckle, Martha, Bowdon, Melody, Mauer, Barry, Weishampel, John, University of Central Florida
Abstract / Description: Writing pedagogy uses techniques that institutionalize dichotomous thinking rather than work against it. Cartesian duality has helped to create the marginalization of people, environments, and animals inherent in Western thought. Writing pedagogy based in current-traditional rhetoric uses a writing process that reinforces the hierarchical structure of Self/Other, Author/Reader, and Teacher/Student. This structure, in conjunction with capitalism, prioritizes the self and financial gain while...
Show moreWriting pedagogy uses techniques that institutionalize dichotomous thinking rather than work against it. Cartesian duality has helped to create the marginalization of people, environments, and animals inherent in Western thought. Writing pedagogy based in current-traditional rhetoric uses a writing process that reinforces the hierarchical structure of Self/Other, Author/Reader, and Teacher/Student. This structure, in conjunction with capitalism, prioritizes the self and financial gain while diminishing and objectifying the other. The thought process behind the objectification and monetization of the other created the unsustainable business and life practices behind global warming, racism, sexism, and environmental destruction. A reframing of pedagogical writing practices can fight dichotomous thinking by re-imagining student writers as counter-capitalism content creators. Changing student perceptions from isolation to a transmodern, humanitarian, and feminist ethics of care model uses a self-reflexive ethnography to form a pedagogy of writing that challenges dichotomous thought(-)by focusing on transparency in my teaching practice, the utilization of liminality through images, the use of technology to publish student work, and both instructor and student self-reflection as a part of the writing and communication process. This practice has led me to a theory of resistance and influence that I have titled The Resistance Hurricane, a definition of digital rhetoric that includes humanitarian and feminist objectives that I have titled Electric Rhetoric, and a definition for the digitally mediated product of that rhetoric that I call Electric Blooms or electracy after Gregory Ulmer's term for digital media.
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Date Issued: 2019
Identifier: CFE0007777, ucf:52371
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0007777

Title: THEORETICAL STUDY OF BEAM TRANSFORMATIONS BY VOLUME DIFFRACTION.
Creator: Mokhov, Sergiy, Zeldovich, Boris, University of Central Florida
Abstract / Description: Laser beams can be manipulated by volume diffractive elements in addition to conventional optical elements like mirrors, lenses, and beam splitters. Conventional optical elements can be described by applying the basic laws of reflection and refraction at the surfaces of the elements. Even diffraction by surface gratings utilizes relatively simple mathematics. This is to be contrasted with the volume diffraction, which requires coupled wave theory in the slowly varying envelope approximation ...
Show moreLaser beams can be manipulated by volume diffractive elements in addition to conventional optical elements like mirrors, lenses, and beam splitters. Conventional optical elements can be described by applying the basic laws of reflection and refraction at the surfaces of the elements. Even diffraction by surface gratings utilizes relatively simple mathematics. This is to be contrasted with the volume diffraction, which requires coupled wave theory in the slowly varying envelope approximation (SVEA) to obtain accurate results. Efficient spatially distributed diffraction of laser beams is possible due to the high coherence of laser light, and it occurs at specific resonant Bragg conditions. This research work is inspired and driven by the successful development of recording technology for robust, high-efficiency volume Bragg gratings (VBGs) in photo-thermo-refractive (PTR) glass. Mostly VBGs of the reflective type are discussed in this dissertation. Starting with an analysis of electro-magnetic wave propagation in layered media, we have reformulated Fresnel and volume reflection phenomena in terms of a convenient parameter S - strength of reflection. The influence that the different non-uniformities inside a VBG have on its spectral properties has been examined. One important result of this work is the proposal of moire VBG and the derivation of an analytical expression for its bandwidth. A multiplexed VBG used as a coherent combiner is discussed as well. Beam distortion via transmission through and/or reflection by a heated VBG due to residual absorption is analyzed.
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Date Issued: 2011
Identifier: CFE0004054, ucf:49152
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0004054

Title: A PERSONAL EXPLORATION INTO THE ETHICS AND RESPONSIBILITIES OF A THEATRE TEACHING ARTIST.
Creator: Dunn , Amie, Weaver , Earl, University of Central Florida
Abstract / Description: As an artist in the field of theatre for young audiences, I encounter many definitions of Ã‚Â'teaching artist,Ã‚Â' and within each definition lies a new set of physical, educational, and psychological responsibilities. While the term Ã‚Â'teaching artistÃ‚Â' continues to evolve and grow, I am interested in exploring a common struggle among teaching artists: What does it mean to be an ethical and responsible...
Show moreAs an artist in the field of theatre for young audiences, I encounter many definitions of Ã‚Â'teaching artist,Ã‚Â' and within each definition lies a new set of physical, educational, and psychological responsibilities. While the term Ã‚Â'teaching artistÃ‚Â' continues to evolve and grow, I am interested in exploring a common struggle among teaching artists: What does it mean to be an ethical and responsible teaching artist? This thesis allows me to create a personal definition of Ã‚Â'teaching artistÃ‚Â' while exploring the relationship between responsibility, ethics, and community-based teaching. I begin by formulating my current understanding and beliefs about what it means to be a responsible teaching artist. I research how others in the TYA field, specifically Michael Rohd, Stephani Etheridge Woodson and Barbara McKean have dealt with issues of ethics and responsibility through four specific questions: How does my personal culture, race, gender, sexual orientation, and beliefs positively or negatively affect the work I do with young people? How does a teaching artist manage an environment in which there are inherently therapeutic qualities, without stepping into the role of therapist, and maintain a healthy relationship with the young people and the work? How do teaching artists maneuver through a structure where the ideologies of the teacher are guiding the project on a macro level but not a micro level? Is it possible or necessary to share responsibility with young people? As a reflective artist I canÃ‚Â't help but question, challenge, and rethink choices I make in facilitation. I would venture to say it would be irresponsible not to do so. I am hopeful this exploration will not only improve my personal teaching but also allow and inspire others to take a look at their practice in terms of ethics and responsibility.
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Date Issued: 2010
Identifier: CFE0003012, ucf:48339
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0003012

Title: THE IMPLEMENTATION OF INTERACTIVE SCIENCE NOTEBOOKS ANDTHE EFFECT IT HAS ON STUDENTS WRITING.
Creator: Braxton, Eva, Jeanpierre, Bobby, University of Central Florida
Abstract / Description: The purpose of this study was to determine whether or not my practice of implementing Interactive Science Notebooks (ISN) impacts 4th grade students writing in science. Through this action research, studentsÃƒÂƒÃ‚ÂƒÃƒÂ‚Ã‚ÂƒÃƒÂƒÃ‚Â‚ÃƒÂ‚Ã‚Â‚ÃƒÂƒÃ‚ÂƒÃƒÂ...
Show moreThe purpose of this study was to determine whether or not my practice of implementing Interactive Science Notebooks (ISN) impacts 4th grade students writing in science. Through this action research, studentsÃƒÂƒÃ‚ÂƒÃƒÂ‚Ã‚ÂƒÃƒÂƒÃ‚Â‚ÃƒÂ‚Ã‚Â‚ÃƒÂƒÃ‚ÂƒÃƒÂ‚Ã‚Â‚ÃƒÂƒÃ‚Â‚ÃƒÂ‚Ã‚Â' writing was analyzed to determine whether the use of ISN affected studentsÃƒÂƒÃ‚ÂƒÃƒÂ‚Ã‚ÂƒÃƒÂƒÃ‚Â‚ÃƒÂ‚Ã‚Â‚ÃƒÂƒÃ‚ÂƒÃƒÂ‚Ã‚Â‚ÃƒÂƒÃ‚Â‚ÃƒÂ‚Ã‚Â' use of details, support claims and justifications in their written responses. Also through the use of the Interactive Science Notebook, studentsÃƒÂƒÃ‚ÂƒÃƒÂ‚Ã‚ÂƒÃƒÂƒÃ‚Â‚ÃƒÂ‚Ã‚Â‚ÃƒÂƒÃ‚ÂƒÃƒÂ‚Ã‚Â‚ÃƒÂƒÃ‚Â‚ÃƒÂ‚Ã‚Â' use of science vocabulary in their writing was also analyzed. Finally, studentsÃƒÂƒÃ‚ÂƒÃƒÂ‚Ã‚ÂƒÃƒÂƒÃ‚Â‚ÃƒÂ‚Ã‚Â‚ÃƒÂƒÃ‚ÂƒÃƒÂ‚Ã‚Â‚ÃƒÂƒÃ‚Â‚ÃƒÂ‚Ã‚Â' reflective writing practices were examined in order to determine how students understood and explored physical science. A triangulation of data gathered consisted of the use of rubrics, focus groups and one-on-one conferencing. The data collected from this action research implied that the Interactive Science Notebooks did indeed have an impact on studentsÃƒÂƒÃ‚ÂƒÃƒÂ‚Ã‚ÂƒÃƒÂƒÃ‚Â‚ÃƒÂ‚Ã‚Â‚ÃƒÂƒÃ‚ÂƒÃƒÂ‚Ã‚Â‚ÃƒÂƒÃ‚Â‚ÃƒÂ‚Ã‚Â' scientific writing. Students writing reflections demonstrated an increase in the use of claims and evidence, and meaningful questions related to the science topic investigated.
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Date Issued: 2010
Identifier: CFE0003058, ucf:48320
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0003058

Title: NUMERICAL MODELING OF THE SHOCK TUBE FLOW FIELDS BEFORE ANDDURING IGNITION DELAY TIME EXPERIMENTS AT PRACTICAL CONDITIONS.
Creator: lamnaouer, mouna, Kassab, Alain, University of Central Florida
Abstract / Description: An axi-symmetric shock-tube model has been developed to simulate the shock-wave propagation and reflection in both non-reactive and reactive flows. Simulations were performed for the full shock-tube geometry of the high-pressure shock tube facility at Texas A&M University. Computations were carried out in the CFD solver FLUENT based on the finite volume approach and the AUSM+ flux differencing scheme. Adaptive mesh refinement (AMR) algorithm was applied to the time-dependent flow fields to...
Show moreAn axi-symmetric shock-tube model has been developed to simulate the shock-wave propagation and reflection in both non-reactive and reactive flows. Simulations were performed for the full shock-tube geometry of the high-pressure shock tube facility at Texas A&M University. Computations were carried out in the CFD solver FLUENT based on the finite volume approach and the AUSM+ flux differencing scheme. Adaptive mesh refinement (AMR) algorithm was applied to the time-dependent flow fields to accurately capture and resolve the shock and contact discontinuities as well as the very fine scales associated with the viscous and reactive effects. A conjugate heat transfer model has been incorporated which enhanced the credibility of the simulations. The multi-dimensional, time-dependent numerical simulations resolved all of the relevant scales, ranging from the size of the system to the reaction zone scale. The robustness of the numerical model and the accuracy of the simulations were assessed through validation with the analytical ideal shock-tube theory and experimental data. The numerical method is first applied to the problem of axi-symmetric inviscid flow then viscous effects are incorporated through viscous modeling. The non-idealities in the shock tube have been investigated and quantified, notably the non-ideal transient behavior in the shock tube nozzle section, heat transfer effects from the hot gas to the shock tube side walls, the reflected shock/boundary layer interactions or what is known as bifurcation, and the contact surface/bifurcation interaction resulting into driver gas contamination. The non-reactive model is shown to be capable of accurately simulating the shock and expansion wave propagations and reflections as well as the flow non-uniformities behind the reflected shock wave. Both the inviscid and the viscous non-reactive models provided a baseline for the combustion model iii which involves elementary chemical reactions and requires the coupling of the chemistry with the flow fields adding to the complexity of the problem and thereby requiring tremendous computational resources. Combustion modeling focuses on the ignition process behind the reflected shock wave in undiluted and diluted Hydrogen test gas mixtures. Accurate representation of the Shock Ã‚Â–tube reactive flow fields is more likely to be achieved by the means of the LES model in conjunction with the EDC model. The shock-tube CFD model developed herein provides valuable information to the interpretation of the shock-tube experimental data and to the understanding of the impact the facility-dependent non-idealities can have on the ignition delay time measurements.
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Date Issued: 2010
Identifier: CFE0003011, ucf:48366
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0003011

Title: SAW REFLECTIVE TRANSDUCERS AND ANTENNAS FOR ORTHOGONAL FREQUENCY CODED SAW SENSORS.
Creator: Santos, Bianca Maria, Malocha, Donald, University of Central Florida
Abstract / Description: Passive sensors that vary its impedance per measured parameter may be used with surface acoustic wave (SAW) reflective transducers (SRT) for wireless acquisition of the measurand. The device is composed of two transducers, where one, which may be attached to an antenna, is used to launch the wave within the device substrate, and the other is where the sensor load is attached to. The latter is able to reflect the incident wave. How much power is reflected is determined by the attached sensor...
Show morePassive sensors that vary its impedance per measured parameter may be used with surface acoustic wave (SAW) reflective transducers (SRT) for wireless acquisition of the measurand. The device is composed of two transducers, where one, which may be attached to an antenna, is used to launch the wave within the device substrate, and the other is where the sensor load is attached to. The latter is able to reflect the incident wave. How much power is reflected is determined by the attached sensor load. Amplitude variations as well as peak frequency variations of the SRT reflectivity response are explored in this thesis. SAW passive temperature sensors with an orthogonal frequency coded (OFC) time response were previously investigated and prove to be ideal for use in harsh environments. Each sensor is distinguishable from the other due to the OFC code embedded within its time response. However, this coding technique poses a difficulty in designing antennas for the sensor due to its inherently wide bandwidth, and capacitive, non-uniform input impedance. This work covers antenna design and testing for the 250MHz wireless temperature acquisition prototype with a 28% fractional bandwidth, and for the 912MHz system which has 10% fractional bandwidth. Apart from the tag, antennas for the transmitter and receiver were designed for 50 Ohm matching with the required bandwidth maintained. Wireless temperature acquisition runs for the 250MHz prototype were successfully performed and show good agreement with measurements made by a thermocouple. Since a transceiver for the 912MHz system is not complete, the performance of the antennas was gauged by observing the signal transmitted wirelessly by the SAW tag and by comparing this with the sensor time response measured directly by a vector network analyzer.
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Date Issued: 2009
Identifier: CFE0002649, ucf:48199
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0002649

Title: Light Trapping in Thin Film Crystalline Silicon Solar Cells.
Creator: Boroumand Azad, Javaneh, Chanda, Debashis, Peale, Robert, Del Barco, Enrique, Flitsiyan, Elena, Schoenfeld, Winston, University of Central Florida
Abstract / Description: This dissertation presents numerical and experimental studies of a unified light trapping approach that is extremely important for all practical solar cells. A 2D hexagonal Bravais lattice diffractive pattern is studied in conjunction with the verification of the reflection mechanisms of single and double layer anti-reflective coatings in the broad range of wavelength 400 nm - 1100 nm. By varying thickness and conformity, we obtained the optimal parameters which minimize the broadband...
Show moreThis dissertation presents numerical and experimental studies of a unified light trapping approach that is extremely important for all practical solar cells. A 2D hexagonal Bravais lattice diffractive pattern is studied in conjunction with the verification of the reflection mechanisms of single and double layer anti-reflective coatings in the broad range of wavelength 400 nm - 1100 nm. By varying thickness and conformity, we obtained the optimal parameters which minimize the broadband reflection from the nanostructured crystalline silicon surface over a wide range of angle 0(&)deg;-65(&)deg;. While the analytical design of broadband, angle independent anti-reflection coatings on nanostructured surfaces remains a scientific challenge, numerical optimization proves a viable alternative, paving the path towards practical implementation of the light trapping solar cells. A 3 (&)#181;m thick light trapping solar cell is modeled in order to predict and maximize combined electron-photon harvesting in ultrathin crystalline silicon solar cells. It is shown that the higher charge carrier generation and collection in this design compensates the absorption and recombination losses and ultimately results in an increase in energy conversion efficiency. Further, 20 (&)#181;m and 100 (&)#181;m thick functional solar cells with the light trapping scheme are studied. The efficiency improvement is observed numerically and experimentally due to photon absorption enhancement in the light trapping cells with respect to a bare cell of same thickness.
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Date Issued: 2017
Identifier: CFE0006936, ucf:51654
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006936

Title: APPLICATION OF ABSORPTIVE TREATMENTS ON TRAFFIC NOISE BARRIERS IN FLORIDA.
Creator: Chua, Chin Boon, Wayson, Roger, University of Central Florida
Abstract / Description: In this thesis, the parallel barrier analysis feature in the Federal Highway Administration Traffic Noise Model (FHWA TNM), which is based on RAYVERB was used to explore the effects of multiple reflections due to single and parallel barriers and the use of absorptive treatment. Database was developed from the data collected from previous research efforts was used to generate a best fit equation model that can be used as a predetermining tool to determine the magnitude of parallel barrier...
Show moreIn this thesis, the parallel barrier analysis feature in the Federal Highway Administration Traffic Noise Model (FHWA TNM), which is based on RAYVERB was used to explore the effects of multiple reflections due to single and parallel barriers and the use of absorptive treatment. Database was developed from the data collected from previous research efforts was used to generate a best fit equation model that can be used as a predetermining tool to determine the magnitude of parallel barrier insertion loss. The best fit equation model was then used to test against measured/model result and TNM prediction results for its validity. Absorptive materials were also studied such that 3 top of them were selected and recommended for Florida highway barrier use. It was found that the top three absorptive treatments for use on Florida highway barriers have been determined to be cementitous material, metal wool and glass fiber. These materials can be used to reduce the sound reflections for single and parallel barriers. The developed best fit equation model from this research is Deg = -2.17NRC - CW0.42 + 1.97eln(BH) + RH0.29 + DBB0.27; the prediction results give moderately high R2 value of 0.55 if compared to the results from database. Prediction results from best fit equation model was also found to be consistent with the results from the measure/modeled results, providing further proof of the validity of the model. However, if compared results from equation model, TNM and measured/model (measured and model compared results using ANSI method), TNM was shown to provide higher insertion loss degradation. It was found that the most effective placement of absorptive material was the pattern which covers the barrier from the bottom up; it was also found that only about 60% from the bottom of the barrier area requires covering with high NRC absorptive treatment (NRC greater than 0.8) without sacrificing insertion loss. Also, if the barrier area near the top includes an easily obtainable NRC value of 0.4, only 40% to 50% of the bottom barrier needs absorptive treatment with a higher, more expensive NRC rating. These findings can substantially reduce the cost of conventional absorptive barrier which have full coverage of high NRC absorptive treatment. This research has begun important improvements in noise barrier design, additional work can be continued to further verify all the findings in this thesis such that easier and better equation model can be developed to calculate insertion loss degradation and cheaper absorptive barrier with less absorptive material usage can be built.
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Date Issued: 2004
Identifier: CFE0000008, ucf:46127
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000008

Title: WALL HEAT TRANSFER EFFECTS IN THE ENDWALL REGION BEHIND A REFLECTED SHOCK WAVE AT LONG TEST TIMES.
Creator: Frazier, Corey, Petersen, Eric, University of Central Florida
Abstract / Description: Shock-tube experiments are typically performed at high temperatures (>1200K) due to test-time constraints. These test times are usually ~1 ms in duration and the source of this short, test-time constraint is loss of temperature due to heat transfer. At short test times, there is very little appreciable heat transfer between the hot gas and the cold walls of the shock tube and a high test temperature can be maintained. However, some experiments are using lower temperatures (approx. 800K) to...
Show moreShock-tube experiments are typically performed at high temperatures (>1200K) due to test-time constraints. These test times are usually ~1 ms in duration and the source of this short, test-time constraint is loss of temperature due to heat transfer. At short test times, there is very little appreciable heat transfer between the hot gas and the cold walls of the shock tube and a high test temperature can be maintained. However, some experiments are using lower temperatures (approx. 800K) to achieve ignition and require much longer test times (up to 15 ms) to fully study the chemical kinetics and combustion chemistry of a reaction in a shock-tube experiment. Using mathematical models, analysis was performed studying the effects of temperature, pressure, shock-tube inner diameter, and test-port location at various test times (from 1 – 20 ms) on temperature maintenance. Three models, each more complex than the previous, were used to simulate test conditions in the endwall region behind the reflected shock wave with Ar and N2 as bath gases. Temperature profile, thermal BL thickness, and other parametric results are presented herein. It was observed that higher temperatures and lower pressures contributed to a thicker thermal boundary layer, as did shrinking inner diameter. Thus it was found that a test case such as 800K and 50 atm in a 16.2-cm-diameter shock tube in Argon maintained thermal integrity much better than other cases – pronounced by a thermal boundary layer < 1 mm thick and an average temperature > 799.9 K from 1–20 ms.
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Date Issued: 2007
Identifier: CFE0001593, ucf:47162
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001593

Title: NURSING MANAGEMENT AND MIRROR THERAPY FOR PHANTOM LIMB PAIN.
Creator: Henry, Bridget, Allred, Kelly, University of Central Florida
Abstract / Description: Phantom limb pain may occur after the accidental removal or surgical amputation of a limb. Phantom limb pain is the experience of pain in the limb that is no longer present. The clinical management of phantom limb pain is essential in the overall reduction of patient rehabilitation and poor patient outcomes. A patient�s degree of phantom limb pain is influenced by their personal response to loss and pain and can have devastating effects to a person�s social performance, occupational role,...
Show morePhantom limb pain may occur after the accidental removal or surgical amputation of a limb. Phantom limb pain is the experience of pain in the limb that is no longer present. The clinical management of phantom limb pain is essential in the overall reduction of patient rehabilitation and poor patient outcomes. A patient�s degree of phantom limb pain is influenced by their personal response to loss and pain and can have devastating effects to a person�s social performance, occupational role, family role, relationships, and involvement in activities or hobbies. Like most chronic pain, phantom limb pain decreases the quality of life. Not all amputees who suffer from chronic pain respond to traditional therapies. The purpose of this integrated review of the literature was to explore current research and determine the efficacy of mirror therapy in the treatment of Phantom limb pain in amputees. A database search of CINAHL, PubMed (MEDLINE), and OneSearch was conducted. Mirror therapy had no reported side effects, was inexpensive, and was capable of being practiced at home and at the bedside. Relevant findings in the literature revealed a significant decrease in phantom limb pain when using mirror therapy for more than 4 weeks. Although limited research on the use of mirror therapy as an intervention for amputees, existing research supports the efficacy of mirror therapy for the management of phantom limb pain. Nurses and healthcare providers need education on mirror therapy to advocate for their patients to ensure the best possible outcome and reduction of phantom limb pain. Further research on mirror therapy is needed.
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Date Issued: 2016
Identifier: CFH2000028, ucf:45606
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH2000028

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