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Title: HIGH CURRENT DENSITY LOW VOLTAGE ISOLATED DC-DC CONVERTERSWITH FAST TRANSIENT RESPONSE.
Creator: Yao, Liangbin, Batarseh, Issa, University of Central Florida
Abstract / Description: With the rapid development of microprocessor and semiconductor technology, industry continues to update the requirements for power supplies. For telecommunication and computing system applications, power supplies require increasing current level while the supply voltage keeps decreasing. For example, the Intel's CPU core voltage decreased from 2 volt in 1999 to 1 volt in 2005 while the supply current increased from 20A in 1999 to up to 100A in 2005. As a result, low-voltage high-current...
Show moreWith the rapid development of microprocessor and semiconductor technology, industry continues to update the requirements for power supplies. For telecommunication and computing system applications, power supplies require increasing current level while the supply voltage keeps decreasing. For example, the Intel's CPU core voltage decreased from 2 volt in 1999 to 1 volt in 2005 while the supply current increased from 20A in 1999 to up to 100A in 2005. As a result, low-voltage high-current high efficiency dc-dc converters with high power-density are demanded for state-of-the-art applications and also the future applications. Half-bridge dc-dc converter with current-doubler rectification is regarded as a good topology that is suitable for high-current low-voltage applications. There are three control schemes for half-bridge dc-dc converters and in order to provide a valid unified analog model for optimal compensator design, the analog state-space modeling and small signal modeling are studied in the dissertation and unified state-space and analog small signal model are derived. In addition, the digital control gains a lot of attentions due to its flexibility and re-programmability. In this dissertation, a unified digital small signal model for half-bridge dc-dc converter with current doubler rectifier is also developed and the digital compensator based on the derived model is implemented and verified by the experiments with the TI DSP chip. In addition, although current doubler rectifier is widely used in industry, the key issue is the current sharing between two inductors. The current imbalance is well studied and solved in non-isolated multi-phase buck converters, yet few discusse this issue in the current doubler rectification topology within academia and industry. This dissertation analyze the current sharing issue in comparison with multi-phase buck and one modified current doubler rectifier topology is proposed to achieve passive current sharing. The performance is evaluated with half bridge dc-dc converter; good current sharing is achieved without additional circuitry. Due to increasing demands for high-efficiency high-power-density low-voltage high current topologies for future applications, the thermal management is challenging. Since the secondary-side conduction loss dominates the overall power loss in low-voltage high-current isolated dc-dc converters, a novel current tripler rectification topology is proposed. Theoretical analysis, comparison and experimental results verify that the proposed rectification technique has good thermal management and well-distributed power dissipation, simplified magnetic design and low copper loss for inductors and transformer. That is due to the fact that the load current is better distributed in three inductors and the rms current in transformer windings is reduced. Another challenge in telecommunication and computing applications is fast transient response of the converter to the increasing slew-rate of load current change. For instance, from Intel's roadmap, it can be observed that the current slew rate of the age regulator has dramatically increased from 25A/uS in 1999 to 400A/us in 2005. One of the solutions to achieve fast transient response is secondary-side control technique to eliminate the delay of optocoupler to increase the system bandwidth. Active-clamp half bridge dc-dc converter with secondary-side control is presented and one industry standard 16th prototype is built and tested; good efficiency and transient response are shown in the experimental section. However, one key issue for implementation of secondary-side control is start-up. A new zero-voltage-switching buck-flyback isolated dc-dc converter with synchronous rectification is proposed, and it is only suitable for start-up circuit for secondary-side controlled converter, but also for house-keeping power supplies and standalone power supplies requiring multi-outputs.
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Date Issued: 2007
Identifier: CFE0001814, ucf:47336
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001814

Title: SEASONAL AND DIEL PATTERNS OF MANATEE HABITAT USE.
Creator: Ross, Monica, Weishampel, John, University of Central Florida
Abstract / Description: State and Federal agencies have created sanctuaries and speed zones to help reduce manatee mortality while incorporating the recreational and commercial resource needs of these same habitats for humans. Specific habitat resources are considered necessary to increase manatee survivorship. We have only recently begun to address how manatees use some of these resources based on physiological or reproductive strategies. In this study, I quantified patterns of habitat use during seasonal and diel...
Show moreState and Federal agencies have created sanctuaries and speed zones to help reduce manatee mortality while incorporating the recreational and commercial resource needs of these same habitats for humans. Specific habitat resources are considered necessary to increase manatee survivorship. We have only recently begun to address how manatees use some of these resources based on physiological or reproductive strategies. In this study, I quantified patterns of habitat use during seasonal and diel periods for different sex and reproductive manatee classes using data from a radio-telemetry study conducted by the Florida Fish and Wildlife Conservation Commission during 1991-1996. I used five environmental geographic data layers: bathymetry, distance to seagrass, distance to shoreline, distance to warm water refuge sites, and distance to fresh water sources, to discriminate seasonal and diel habitat use patterns for different manatee classes: males (M), females with calves (FWC), and females without calves (FNC). Mean occupancy values were calculated for environmental variable locations and seasonal, diel, and manatee class differences were tested using a Multi-Response Permutation Procedure (MRPP). Nonmetric Multidimensional Scaling (NMS) was used to visualize the ordination patterns of the manatee classes and to assess importance of correlated environmental variables. Significant differences in habitat use were noted between summer and winter based on distances to warm water, seagrass, and fresh water sources but similar habitat use patterns were exhibited within summer diel periods among manatee classes. All manatee classes appeared to have used a higher proportion of locations closer in proximity to seagrass at night than day in winter indicating a disproportionate difference in feeding bouts between diel periods. These differences may be attributed to adjusting feeding strategies to reduce thermoregulatory costs or to decrease human interactions. Differences in patterns were exhibited for the winter diel periods specifically for the FWC manatee classes during winter days. FWC had a higher proportion of locations within the warm water refuges during the day indicating a possible trade off situation between food consumption and thermal exposure. This study demonstrates coarse and fine scale patterns of variation in habitat use for manatees both seasonally and daily within winter. It also suggests that during winter months, manatees were not just utilizing their habitat but they appeared to have preferences and selection for certain habitat types. Recovery of a species is greatly enhanced when patterns of habitat use within the species' environment has been clearly defined. Understanding more specifically what types of habitats manatees choose might allow management to adjust strategies for protection of key habitats while encouraging further recovery of this species.
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Date Issued: 2007
Identifier: CFE0001896, ucf:47408
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001896

Title: A Grounded Theory Survey Study of Teachers Perception Perpetuating the Deficit Narrative About Marginalized Students of Color.
Creator: Austin, Cavel, Olan, Elsie, Hewitt, Randall, Jeanpierre, Bobby, Puig, Enrique, University of Central Florida
Abstract / Description: The deficit narrative about marginalized students of color attributes their failure in school to some nature of innate cognitive deficiency, cultural, social, and familial dysfunctions among other schools of thoughts. The purpose of this grounded theory study is to provide a rich description about this phenomenon and to propose theoretical pedagogical adjustments in the classroom as it relates to educating students of color. The study applies Charmaz (2014) Constructivist approach to grounded...
Show moreThe deficit narrative about marginalized students of color attributes their failure in school to some nature of innate cognitive deficiency, cultural, social, and familial dysfunctions among other schools of thoughts. The purpose of this grounded theory study is to provide a rich description about this phenomenon and to propose theoretical pedagogical adjustments in the classroom as it relates to educating students of color. The study applies Charmaz (2014) Constructivist approach to grounded theory methods to examine the following research questions: (RQ1) How do teachers' narratives about students of color depict their teaching experiences and (RQ2) How do teachers' narratives about students of color inform students learning? Two overarching themes emerged in this study: practicing color blindness impacts cultural responsiveness while perpetuate deficit thinking, and understanding cultural background stimulates sensitivity when designing curriculum for students of color. The findings of this research demonstrate teachers' deficit thinking depicts their pedagogical practices and informs students learning. The research has both practical and theoretical implications for dispelling the deficit thinking regarding students of color.
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Date Issued: 2019
Identifier: CFE0007779, ucf:52339
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0007779

Title: The AfterMath: A Culturally Responsive Mathematical Intervention to Aid Students Affected by Natural Disasters.
Creator: Kurtz, Brianna, Haciomeroglu, Erhan, Bush, Sarah, Safi, Farshid, Biraimah, Karen, University of Central Florida
Abstract / Description: On September 20, 2017, Hurricane Maria struck the island of Puerto Rico. The damage was extensive, and many people found themselves to be natural disaster refugees. As a result, schools in Central Florida saw an influx of new students who had their educations interrupted by the disaster and now were resuming school in a new language of instruction. These students not only faced linguistic challenges but also academic differences due to the high prevalence of poverty and the effects of...
Show moreOn September 20, 2017, Hurricane Maria struck the island of Puerto Rico. The damage was extensive, and many people found themselves to be natural disaster refugees. As a result, schools in Central Florida saw an influx of new students who had their educations interrupted by the disaster and now were resuming school in a new language of instruction. These students not only faced linguistic challenges but also academic differences due to the high prevalence of poverty and the effects of neocolonialism in their previous schooling. This mixed methods study implemented an intensive intervention in probability to aid students in developing mathematical understanding and forming meaningful connections. Student participants, who had been affected by Hurricane Maria, were now attending a public high school and were paired one-on-one with a bilingual, mathematically high performing student mentor to complete culturally responsive, bilingual probability tasks. Data collection occurred over the course of six weeks in fall 2019. Both mentor and mentee students participated in focus group interviews, and the mentees completed a probability pre-test and post-test. Student participants were found to have statistically significant increases in the understanding of probability concepts when comparing pre-intervention and post-intervention results, with the understanding and usage of the multiplication rule showing the most significant improvement. Both mentors and mentees reported feeling a stronger sense of unity and belonging post-intervention as well as improvement in bilingual academic vocabulary. With the impact of natural disasters on the rise, implications of this study include its adaption to respond to future displaced students as they resume schooling post-interruption in Central Florida and beyond.
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Date Issued: 2019
Identifier: CFE0007828, ucf:52820
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0007828

Title: Investigating New Guaiazulenes and Diketopyrropyrroles for Photonic Applications.
Creator: Ghazvini Zadeh, Ebrahim, Belfield, Kevin, Campiglia, Andres, Yuan, Yu, Zou, Shengli, Cheng, Zixi, University of Central Florida
Abstract / Description: ?-Conjugated systems have been the focus of study in recent years in order to understand their charge transport and optical properties for use in organic electronic devices, fluorescence bioimaging, sensors, and 3D optical data storage (ODS), among others. As a result, several molecular building blocks have been designed, allowing new frontiers to be realized. While various successful building blocks have been fine-tuned at both the electronic and molecular structure level to provide advanced...
Show more?-Conjugated systems have been the focus of study in recent years in order to understand their charge transport and optical properties for use in organic electronic devices, fluorescence bioimaging, sensors, and 3D optical data storage (ODS), among others. As a result, several molecular building blocks have been designed, allowing new frontiers to be realized. While various successful building blocks have been fine-tuned at both the electronic and molecular structure level to provide advanced photophysical and optoelectronic characteristics, the azulene framework has been under-appreciated despite its unique electronic and optical properties. Among several attributes, azulenes are vibrant blue naturally occurring hydrocarbons that exhibit large dipolar character, coupled with stimuli-responsive behavior in acidic environments. Additionally, the non-toxic nature and the accompanying eco-friendly feature of some azulenes, namely guaiazulene, may set the stage to further explore a more (")green(") route towards photonic and conductive materials.The first part of this dissertation focuses on exploiting guaiazulene as a natural building block for the synthesis of chromophores with varying stimuli-responsiveness. Results described in Chapter 1 show that extending the conjugation of guaiazulene through its seven-membered ring methyl group with aromatic substituents dramatically impacts the optical properties of the guaiazulenium carbocation. Study of these ?(-)stabilized tropilium ions enabled establishing photophysical structure-property trends for guaiazulene-terminated ?-conjugated analogs under acidic conditions, including absorption, emission, quantum yield, and optical band gap patterns. These results were exploited in the design of a photosensitive polymeric system with potential application in the field of three dimensional (3D) optical data storage (ODS).Chapter 2 describes the use of guaiazulene reactive sites (C-3 and C-4 methyl group) to generate a series of cyclopenta[ef]heptalenes that exhibit strong stimuli-responsive behavior. The approach presents a versatile route that allows for various substrates to be incorporated into the resulting cyclopenta[ef]heptalenes, especially after optimization that led to devising a one-pot reaction toward such tricyclic systems. Examining the UV-vis absorption profiles in neutral and acidic media showed that the extension of conjugation at C(4) of the cyclopenta[ef]heptalene skeleton results in longer absorption maxima and smaller optical energy gaps. Additionally, it was concluded that these systems act as sensitizers of a UV-activated ((<) 300 nm) photoacid generator (PAG), via intermolecular photoinduced electron transfer (PeT), upon which the PAG undergoes photodecomposition resulting in the generation of acid.In a related study, the guaiazulene methyl group at C-4 was employed to study the linear and nonlinear optical properties of 4-styrylguaiazulenes, having the same ?(-)donor with varying ?-spacer. It was realized that the conjugation length correlates with the extent of bathochromic shift of the protonated species. On the other hand, a trend of decreasing quantum yield was established for this set of 4-styrylguaiazulenes, which can be explained by the increasingly higher degree of flexibility.The second part of this dissertation presents a comprehensive investigation of the linear photophysical, photochemical, and nonlinear optical properties of diketopyrrolopyrrole (DPP)-based derivatives, including two-photon absorption (2PA), femtosecond transient absorption, stimulated emission spectroscopy, and superfluorescence phenomena. The synthetic feasibility, ease of modification, outstanding robustness, and attractive spectroscopic properties of DPPs have motivated their study for fluorescence microscopy applications, concluding that the prepared DPP's are potentially suitable chromophores for high resolution stimulated emission depletion (STED) microscopy.
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Date Issued: 2015
Identifier: CFE0006034, ucf:50986
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006034

Title: EXAMINING ELEMENTARY PRESERVICE TEACHER EFFICACY TO TEACH WRITING IN A TITLE 1 SCHOOL: A MIXED METHOD STUDY OF A SCHOOL-BASED TEACHER EDUCATION COURSE INTERVENTION.
Creator: Blanch, Norine, Roberts, Sherron, Lue, Martha, Zygouris-Coe, Vassiliki, Zugelder, Bryan, University of Central Florida
Abstract / Description: As the demographics of the United States change, barriers persistently thwart efforts to ensure that all students, regardless of ethnicity, academic ability, or family circumstance, have equal opportunities to learn. Diminished retention rates of effective educators in Title 1 schools, elevated rates at which students from low-income families are taught by inexperienced or unqualified teachers and insufficient preparation of preservice teachers (PSTs) to teach in Title 1 schools are three...
Show moreAs the demographics of the United States change, barriers persistently thwart efforts to ensure that all students, regardless of ethnicity, academic ability, or family circumstance, have equal opportunities to learn. Diminished retention rates of effective educators in Title 1 schools, elevated rates at which students from low-income families are taught by inexperienced or unqualified teachers and insufficient preparation of preservice teachers (PSTs) to teach in Title 1 schools are three such barriers. Policy reform organizations interested in improving the effectiveness of teacher education programs nationwide suggest forging strong clinical partnerships between universities and schools by relocating coursework to school-based settings that more closely resemble the reality of today's classrooms. PSTs, 27 in total, participated in a school-based teacher education intervention situated in a Title 1 school in central Florida to examine the influences of this intervention on PSTs efficacy for culturally responsive teaching and their sense of efficacy for teaching writing to students of diversity in a Title 1 school. Preliminary results indicated that while some PSTs tended to overestimate their efficacy for teaching students of diversity in Title 1 schools prior to the intervention, the school-based course disrupted that reality. Through weekly teaching experiences, PSTs' misconceptions about Title 1 schools, and their own pedagogical practices were challenged. Results yielded a purportedly more efficacious group of PSTs as measured by quantitative survey research and post qualitative responses in this mixed method study.
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Date Issued: 2016
Identifier: CFE0006265, ucf:51049
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006265

Title: High-efficiency Blue Phase Liquid Crystal Displays.
Creator: Li, Yan, Wu, Shintson, Saleh, Bahaa, Zeldovich, Boris, Wu, Xinzhang, University of Central Florida
Abstract / Description: Blue phase liquid crystals (BPLCs) have a delicate lattice structure existing between chiral nematic and isotropic phases, with a stable temperature range of about 2 K. But due to short coherent length, these self-assembled nano-structured BPLCs have a fast response time. In the past three decades, the application of BPLC has been rather limited because of its narrow temperature range. In 2002, Kikuchi et al. developed a polymer stabilization method to extend the blue-phase temperature range...
Show moreBlue phase liquid crystals (BPLCs) have a delicate lattice structure existing between chiral nematic and isotropic phases, with a stable temperature range of about 2 K. But due to short coherent length, these self-assembled nano-structured BPLCs have a fast response time. In the past three decades, the application of BPLC has been rather limited because of its narrow temperature range. In 2002, Kikuchi et al. developed a polymer stabilization method to extend the blue-phase temperature range to more than 60 K. This opens a new gateway for display and photonic applications.In this dissertation, I investigate the material properties of polymer-stabilized BPLCs. According the Gerber's model, the Kerr constant of a BPLC is linearly proportional to the dielectric anisotropy of the LC host. Therefore, in the frequency domain, the relaxation of the Kerr constant follows the same trend as the dielectric relaxation of the host LC. I have carried out experiments to validate the theoretical predictions, and proposed a model called extended Cole-Cole model to describe the relaxation of the Kerr constant. On the other hand, because of the linear relationship, the Kerr constant should have the same sign as the dielectric anisotropy of the LC host; that is, a positive or negative Kerr constant results from positive or negative host LCs, respectively. BPLCs with a positive Kerr constant have been studied extensively, but there has been no study on negative polymer-stabilized BPLCs. Therefore, I have prepared a BPLC mixture using a negative dielectric anisotropy LC host and investigated its electro-optic properties. I have demonstrated that indeed the induced birefringence and Kerr constant are of negative sign. Due to the fast response time of BPLCs, color sequential display is made possible without color breakup. By removing the spatial color filters, the optical efficiency and resolution density are both tripled. With other advantages such as alignment free and wide viewing angle, polymer-stabilized BPLC is emerging as a promising candidate for next-generation displays.However, the optical efficiency of the BPLC cell is relatively low and the operating voltage is quite high using conventional in-plane-switching electrodes. I have proposed several device structures for improving the optical efficiency of transmissive BPLC cells. Significant improvement in transmittance is achieved by using enhanced protrusion electrodes, and a 100% transmittance is achievable using complementary enhanced protrusion electrode structure.For a conventional transmissive blue phase LCD, although it has superb performances indoor, when exposed to strong sunlight the displayed images could be washed out, leading to a degraded contrast ratio and readability. To overcome the sunlight readability problem, a common approach is to adaptively boost the backlight intensity, but the tradeoff is in the increased power consumption. Here, I have proposed a transflective blue phase LCD where the backlight is turned on in dark surroundings while ambient light is used to illuminate the displayed images in bright surroundings. Therefore, a good contrast ratio is preserved even for a strong ambient. I have proposed two transflective blue phase LCD structures, both of which have single cell gap, single gamma driving, reasonably wide view angle, low power consumption, and high optical efficiency. Among all the 3D technologies, integral imaging is an attractive approach due to its high efficiency and real image depth. However, the optimum observation distance should be adjusted as the displayed image depth changes. This requires a fast focal length change of an adaptive lens array. BPLC adaptive lenses are a good candidate because of their intrinsic fast response time. I have proposed several BPLC lens structures which are polarization independent and exhibit a parabolic phase profile in addition to fast response time.To meet the low power consumption requirement set by Energy Star, high optical efficiency is among the top lists of next-generation LCDs. In this dissertation, I have demonstrated some new device structures for improving the optical efficiency of a polymer-stabilized BPLC transmissive display and proposed sunlight readable transflective blue-phase LCDs by utilizing ambient light to reduce the power consumption. Moreover, we have proposed several blue-phase LC adaptive lenses for high efficiency 3D displays.
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Date Issued: 2012
Identifier: CFE0004787, ucf:49725
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0004787

Title: Advanced liquid crystal materials for display and photonic applications.
Creator: Chen, Yuan, Wu, Shintson, Zeldovich, Boris, Schoenfeld, Winston, Fang, Jiyu, University of Central Florida
Abstract / Description: Thin-film-transistor (TFT) liquid crystal display (LCD) has been widely used in smartphones, pads, laptops, computer monitors, and large screen televisions, just to name a few. A great deal of effort has been delved into wide viewing angle, high resolution, low power consumption, and vivid color. However, relatively slow response time and low transmittance remain as technical challenges. To improve response time, several approaches have been developed, such as low viscosity liquid crystals,...
Show moreThin-film-transistor (TFT) liquid crystal display (LCD) has been widely used in smartphones, pads, laptops, computer monitors, and large screen televisions, just to name a few. A great deal of effort has been delved into wide viewing angle, high resolution, low power consumption, and vivid color. However, relatively slow response time and low transmittance remain as technical challenges. To improve response time, several approaches have been developed, such as low viscosity liquid crystals, overdrive and undershoot voltage schemes, thin cell gap with a high birefringence liquid crystal, and elevated temperature operation. The state-of-the-art gray-to-gray response time of a nematic LC device is about 5 ms, which is still not fast enough to suppress the motion picture image blur. On the other hand, the LCD panel's transmittance is determined by the backlight, polarizers, TFT aperture ratio, LC transmittance, and color filters. Recently, a fringe-field-switching mode using a negative dielectric anisotropy (??) LC (n-FFS) has been demonstrated, showing high transmittance (98%), single gamma curve, and cell gap insensitivity. It has potential to replace the commonly used p-FFS (FFS using positive ?? LC) for mobile displays.With the urgent need of submillisecond response time for enabling color sequential displays, polymer-stabilized blue phase liquid crystal (PS-BPLC) has become an increasingly important technology trend for information display and photonic applications. BPLCs exhibit several attractive features, such as reasonably wide temperature range, submillisecond gray-to-gray response time, no need for alignment layer, optically isotropic voltage-off state, and large cell gap tolerance. However, some bottlenecks such as high operation voltage, hysteresis, residual birefringence, and slow charging issue due to the large capacitance, remain to be overcome before their widespread applications can be realized. The material system of PS-BPLC, including nematic LC host, chiral dopant, and polymer network, are discussed in detail. Each component plays an essential role affecting the electro-optic properties and the stability of PS-BPLC.In a PS-BPLC system, in order to lower the operation voltage the host LC usually has a very large dielectric anisotropy (??(>)100), which is one order of magnitude larger than that of a nematic LC. Such a large ?? not only leads to high viscosity but also results in a large capacitance. High viscosity slows down the device fabrication process and increases device response time. On the other hand, large capacitance causes slow charging time to each pixel and limits the frame rate. To reduce viscosity, we discovered that by adding a small amount (~6%) of diluters, the response time of the PS-BPLC is reduced by 2X-3X while keeping the Kerr constant more or less unchanged. Besides, several advanced PS-BPLC materials and devices have been demonstrated. By using a large ?? BPLC, we have successfully reduced the voltage to (<)10V while maintaining submillisecond response time. Finally we demonstrated an electric field-indeced monodomain PS-BPLC, which enables video-rate reflective display with vivid colors. The highly selective reflection in polarization makes it promising for photonics application.Besides displays in the visible spectral region, LC materials are also very useful electro-optic media for near infrared and mid-wavelength infrared (MWIR) devices. However, large absorption has impeded the widespread application in the MWIR region. With delicate molecular design strategy, we balanced the absorption and liquid crystal phase stability, and proposed a fluoro-terphenyl compound with low absorption in both MWIR and near IR regions. This compound serves as an important first example for future development of low-loss MWIR liquid crystals, which would further expand the application of LCs for amplitude and/or phase modulation in MWIR region.
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Date Issued: 2014
Identifier: CFE0005314, ucf:50531
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0005314

Title: University Students' Citizenship Shaped by Service-Learning, Community Service, and Peer-to-Peer Civic Discussions.
Creator: Winston, Haley, Cintron Delgado, Rosa, Welch, Kerry, Malaret, Stacey, Bowdon, Melody, University of Central Florida
Abstract / Description: Citizenship is often referred to as the forgotten outcome of colleges and universities. The present study examined the relationship between undergraduate students' perceived citizenship level and different types of civic experiences (service-learning, community service, and peer-to-peer civic discussions) and also different demographic factors (gender, race/ethnicity, and parental level of education) at a public institution using the Personal and Social Responsibility Inventory. This study...
Show moreCitizenship is often referred to as the forgotten outcome of colleges and universities. The present study examined the relationship between undergraduate students' perceived citizenship level and different types of civic experiences (service-learning, community service, and peer-to-peer civic discussions) and also different demographic factors (gender, race/ethnicity, and parental level of education) at a public institution using the Personal and Social Responsibility Inventory. This study used structural equation modeling and multiple regression analysis. This marks the first time these variables have been researched together. This study found a significant correlation between both community service and peer-to-peer civic discussions in relation to citizenship level. Yet, service-learning frequency was not found to be a significant factor. On the other hand, all three civic experiences together was found to be significantly correlated to citizenship aptitudes. Leading the researcher to find that a holistic (both inside and outside the classroom) approach to student citizenship is valuable for student development. Also, only one significant relationship was found between citizenship levels and any demographic variable (parental education level of doctorate or professional degree).
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Date Issued: 2017
Identifier: CFE0006927, ucf:51695
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006927

Title: Role Ambiguity: Defining the Elusive Role of the Special Education Teacher Who Works in Inclusive Settings.
Creator: Slanda, Dena, Little, Mary, Martin, Suzanne, Pearl, Cynthia, Boote, David, University of Central Florida
Abstract / Description: This phenomenological study examined the lived experiences of special education teachers who worked in inclusive settings. Given the increasing number of students with disabilities receiving special education services in the general education classroom (U.S. Department of Education, 2016), there is a critical need to understand the dynamic role of a special education teacher who works in inclusive settings. Federal mandates have required special education teachers working in inclusive...
Show moreThis phenomenological study examined the lived experiences of special education teachers who worked in inclusive settings. Given the increasing number of students with disabilities receiving special education services in the general education classroom (U.S. Department of Education, 2016), there is a critical need to understand the dynamic role of a special education teacher who works in inclusive settings. Federal mandates have required special education teachers working in inclusive settings to rethink their roles (McLeskey, Landers, Hoppey, (&) Williamson, 2011) and restructure their approach to providing specially-designed services. Further, these roles are dependent on those who interpret and implement policy and access to finite resources. This study used a phenomenological research method to examine the roles and responsibilities of special education teachers. Semi-structured interviews were conducted with seven participants (N = 7). A thematic analysis resulted in five overarching themes. The five themes included: (a) supporting students with disabilities within a support facilitation model; (b) role ambiguity of the special education teacher; (c) the lack of roles and responsibilities of the special education teacher within the MTSS framework; (d) the changing role of collaboration and communication; and (e) the challenges impacting the inclusion of students with disabilities in the general education setting. This study exposed the multiple facets of school and district policies that directly affected special educators' roles and responsibilities, as well as the emergence of a new role as a support facilitator.
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Date Issued: 2017
Identifier: CFE0006796, ucf:51821
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006796

Title: CAREGIVER BURDEN AND COPING RESPONSES FOR FEMALES WHO ARE THE PRIMARY CAREGIVER FOR A FAMILY MEMBER LIVING WITH HIV/AIDS IN KENYA.
Creator: Kimemia, Veronica, Daire, Andrew, University of Central Florida
Abstract / Description: Caring for a family member who is ill can be a draining experience (Cooper et al., 2006; Daire, 2002; Zarit et al, 1980). Providing care for a family member that is living with HIV/AIDS is potentially even more stressful because of social meanings associated with HIV/AIDS infection (Stajduhar, 1998) and the contagious nature of the HIV virus (Powell-Cope & Brown, 1992). Research indicates that most caregivers are female (Bunting, 2001; Songwathana, 2000). In Africa women bear the brunt of the...
Show moreCaring for a family member who is ill can be a draining experience (Cooper et al., 2006; Daire, 2002; Zarit et al, 1980). Providing care for a family member that is living with HIV/AIDS is potentially even more stressful because of social meanings associated with HIV/AIDS infection (Stajduhar, 1998) and the contagious nature of the HIV virus (Powell-Cope & Brown, 1992). Research indicates that most caregivers are female (Bunting, 2001; Songwathana, 2000). In Africa women bear the brunt of the burden of providing care for family members who are living with HIV/AIDS (Mushonga, 2001; Olenja, 1999). This study examined coping factors and caregiver burden among female caregivers (N=116) of a family member living with HIV/AIDS in Kenya. Coping factors were derived from a principal components factor analysis of the fourteen scales on the Brief Cope (Carver, 1997). Caregiver burden was measured using the Zarit Caregiver Burden Inventory. Multiple regression analysis was used to investigate the relationships between caregiver burden and coping factors. Post–hoc multiple regression analyses further investigated the relationship between caregiver burden and caregiver demographic characteristics. The relationship between caregiver burden and care recipient characteristics was also investigated. The principle components factor analysis of the Brief Cope yielded five coping factors that were labeled: Social support, Hope, Acceptance, Planning, and Disposition. The regression analysis that was conducted to investigate the relationships between these five coping factors and caregiver burden indicated a significant inverse relationship between Hope and caregiver burden. The post-hoc analyses investigating the relationship between various caregiver and care recipient characteristics indicated a significant relationship between the caregiver's age and caregiver burden, and education level and caregiver burden. An increase in age correlated with a decrease in caregiver burden. An increase in education level correlated with reduced caregiver burden. Implications of the findings for research and practice are discussed.
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Date Issued: 2006
Identifier: CFE0001012, ucf:46832
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001012

Title: The Efficacy of an Early Warning System and a Response to Intervention Decision-Making Model for Students Transitioning in Secondary Education.
Creator: Walsh, Andrea, Taylor, Rosemarye, Doherty, Walter, Baldwin, Lee, Little, Mary, University of Central Florida
Abstract / Description: The primary goal of this study was to examine the use of an early warning system to aide in recognizing early school disengagement. Additionally, a goal of this study was to examine an intensive response to intervention decision-making process and the difference in student outcomes for those who were selected for the (RtI process. By combining the examination of an early warning system and an RtI decision-making process, this research furthered recommendations for more effective methods of...
Show moreThe primary goal of this study was to examine the use of an early warning system to aide in recognizing early school disengagement. Additionally, a goal of this study was to examine an intensive response to intervention decision-making process and the difference in student outcomes for those who were selected for the (RtI process. By combining the examination of an early warning system and an RtI decision-making process, this research furthered recommendations for more effective methods of identifying students who are academically disengaged, and gain insight on intervention processes in secondary schools. Therefore the research questions tested the validity of an early warning system as a means for identifying students at-risk of academic disengagement and student outcome gains when participating in a Response to Intervention (RtI) decision-making process compared to those who did not participate. Populations of concern included students in transitional periods, moving from elementary to middle school and middle school to high school.The study identified several statistically significant and educationally meaningful difference between the use of a risk score indicator and academic achievement. Findings were consistent with other research that have shown statistically significant relationships between student achievement outcomes and early warning systems. While additional research is needed to develop specific recommendations to educational leaders, researchers, and policy makers, this study validates the notion that an early warning identification risk score can be used to predict academic achievement. An early warning system can aid in student identification, but as noted in the last research question of this study, there is still a great need to reach the ultimate goal: mitigating risk factors for students who are academically disengaged. Specifically, as students transition to larger schools, achievement gaps are susceptible to expanding for students; therefore, there is a great need to ensure intervention processes that address the needs of students who are prone to disengagement.Implications of these findings will apply to educational leaders, researchers, and policy-makers with interest in identification of students who are academically disengaged and in need of intervention supports.
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Date Issued: 2016
Identifier: CFE0006703, ucf:51918
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006703

Title: Defining Effective Teacher Practices among Students with Emotional Behavioral Disabilities.
Creator: Mayes, Zerek, Martin, Suzanne, Boote, David, Butler, S. Kent, Berrio, Gabriel, University of Central Florida
Abstract / Description: This phenomenological study examined the lived experiences of special education teachers who worked with students with emotional behavioral disabilities (EBD) across various urban settings and educative environments. Given that the overall percentage of students receiving special education services has increased, the overall percentage of students with EBD served among all school-aged children and youth has remained below 1% (U.S. Department of Education, National Center for Education...
Show moreThis phenomenological study examined the lived experiences of special education teachers who worked with students with emotional behavioral disabilities (EBD) across various urban settings and educative environments. Given that the overall percentage of students receiving special education services has increased, the overall percentage of students with EBD served among all school-aged children and youth has remained below 1% (U.S. Department of Education, National Center for Education Statistics, 2018). The current failings of reform efforts to improve the academic achievement of students with EBD brings the roles, responsibilities and practices of teachers and their preparation into view. This study examined the impact of culture on the attitudes, beliefs, and practices of special education teachers. Semi-structured interviews were conducted with eight participants (N = 8). A thematic analysis resulted in three overarching themes. The three themes included: (a) the essentials: keys to student engagement, (b) the frustrations regarding effective program implementation, and (c) elements of an effective program. This study exposed multiple factors affecting the effectiveness of special educators' practices as well as offered recommendations for teachers, schools, districts, policies, and future research.
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Date Issued: 2019
Identifier: CFE0007682, ucf:52510
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0007682

Title: Good Works: The Topoi of Corporate Social Responsibility in the Travel and Tourism Industry.
Creator: Culler, Connie, Scott, Blake, Jones, Dan, Rounsaville, Angela, Dingo, Rebecca, University of Central Florida
Abstract / Description: This dissertation focuses on the identification and analysis of Corporate Social Responsibility (CSR) topoi in the travel and tourism industry. A sample set of six companies was selected for the study due to their size and prominence in the industry -- namely Disney, Hilton, Intercontinental, Marriott, Starwood, and Wyndham. Topoi were identified through a blended method of research that employed rhetorical analysis, modified grounded theory, and NVIVO content analysis software. The research...
Show moreThis dissertation focuses on the identification and analysis of Corporate Social Responsibility (CSR) topoi in the travel and tourism industry. A sample set of six companies was selected for the study due to their size and prominence in the industry -- namely Disney, Hilton, Intercontinental, Marriott, Starwood, and Wyndham. Topoi were identified through a blended method of research that employed rhetorical analysis, modified grounded theory, and NVIVO content analysis software. The research followed three guiding principles to recognize textual cues and drive analysis: common and special topoi; topoi as heuristic; topoi for association and amplification; and topoi as fluid and movable. The common CSR topoi, triple bottom line and shared value, were also used as overarching categories for coding the texts. The results of the method yielded six unique topoi that were specific to each company; these included Inspiration, Higher Purpose, Collaborative Innovation, Leadership, The Age of Great Change, and Green. Results also included a set of seven special industry topoi that were common across all of the sample companies; these included Commitment, Management, Alignment, Environment, Engagement, Achievement, and Sustainability. The rhetorical synergy and topological levels identified through this research can inform other studies of CSR about the generative potential of topoi and its fluidity when viewed from different conceptual vantage points.
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Date Issued: 2015
Identifier: CFE0005936, ucf:50851
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0005936

Title: (&)nbsp;Bridging the Gap between ESOL and Native English Speakers in a Digital Collaborative Classroom.
Creator: Samuels, Shalander, Hopp, Carolyn, Pratt Marrett, Caroline, Nutta, Joyce, Kaplan, Jeffrey, University of Central Florida
Abstract / Description: The purpose of this dissertation in practice was to explore how to bridge the gap between ESOL students and native English speaking students in a collaborative learning environment in a middle school in Tangerine Florida. The gap in performance was highlighted because ESOL students failed to meet the same levels of academic achievement (based on the Florida Standard Assessment Test) as their native English-speaking counter parts. The intent of the dissertation was to design a framework that...
Show moreThe purpose of this dissertation in practice was to explore how to bridge the gap between ESOL students and native English speaking students in a collaborative learning environment in a middle school in Tangerine Florida. The gap in performance was highlighted because ESOL students failed to meet the same levels of academic achievement (based on the Florida Standard Assessment Test) as their native English-speaking counter parts. The intent of the dissertation was to design a framework that would meet the pedagogical needs of ESOL students and teachers who teach them. A pilot study was completed that included teachers both ESOL-endorsed and those who were not to determine their needs in terms of professional development that would lead to increased achievement among ESOL students. The study focused on digital schools within one school district. A qualitative research approach was used because it was found to be rigorous, reliable and valid (Morse, Barrett, Mayan, Olson (&) Spiers (2002). Results of the pilot study were intended to inform teachers and school administrators about how to ultimately improve ESOL student performance. The data used in the pilot study were drawn from focus groups as well as information retrieved from reflective teacher and student tools. The conceptual framework that focused the pilot study included socio-cultural theory (Vygotsky, 1986; Mercer, 2007), self-efficacy theory (Bandura, 1997a; Pajares, 1997) culturally responsive teaching theory (Ladson-Billings, 2006; Freire 2000), situated learning theory (Davin (&) Heineke, 2016) and second language acquisition theories (Chomsky, 1965; Ellis, 1997).The findings from the teacher focus groups suggested ways to bridge the gap between the ESOL students and native English speakers. A proposed framework to counter the problem and bridge the gap was designed as a pedagogical intervention (professional development) that would provide the information teachers lack about how to teach ESOL students effectively. The framework also served as a platform to connect and collaborate with other ESOL instructors as a resource and support throughout the school year. Additionally, a teacher-proposed idea was a middle school technology transition (MST2) beginner course for students entering a digital school to give them practice and build their self-efficacy on how to use the necessary applications for each core (FSA tested) class. The results also support the idea that concurrent ongoing professional development and a student introductory technology course throughout the school year could produce more favorable achievement scores of ESOL students, and reduce gaps between ESOL students and native English speaking students.
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Date Issued: 2017
Identifier: CFE0006789, ucf:51808
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006789

Title: Does Virtual Reality Elicit Physiological Arousal in Social Anxiety Disorder.
Creator: Owens, Maryann, Beidel, Deborah, Cassisi, Jeffrey, Bowers, Clint, Neer, Sandra, University of Central Florida
Abstract / Description: The present study examined the ability of a Virtual Reality (VR) public speaking task to elicit physiological arousal in adults with SAD (n=25) and Controls (n=25). A behavioral assessment paradigm was employed to address three study objectives: (a) to determine whether the VR task can elicit significant increases in physiological response over baseline resting conditions (b) to determine if individuals with SAD have a greater increase from baseline levels of physiological and self-reported...
Show moreThe present study examined the ability of a Virtual Reality (VR) public speaking task to elicit physiological arousal in adults with SAD (n=25) and Controls (n=25). A behavioral assessment paradigm was employed to address three study objectives: (a) to determine whether the VR task can elicit significant increases in physiological response over baseline resting conditions (b) to determine if individuals with SAD have a greater increase from baseline levels of physiological and self-reported arousal during the in vivo speech task as opposed to the VR speech task and (c) to determine whether individuals with SAD experience greater changes in physiological and self-reported arousal during each speech task compared to controls. Results demonstrated that the VR task was able to elicit significant increases in heart rate, skin conductance, and respiratory sinus arrhythmia, but did not elicit as much physiological or self-reported arousal as the in vivo speech task. In addition, no differences were found between groups. Clinical implications of these findings are discussed.
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Date Issued: 2013
Identifier: CFE0004906, ucf:49624
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0004906

Title: Facilitating Information Retrieval in Social Media User Interfaces.
Creator: Costello, Anthony, Tang, Yubo, Fiore, Stephen, Goldiez, Brian, University of Central Florida
Abstract / Description: As the amount of computer mediated information (e.g., emails, documents, multi-media) we need to process grows, our need to rapidly sort, organize and store electronic information likewise increases. In order to store information effectively, we must find ways to sort through it and organize it in a manner that facilitates efficient retrieval. The instantaneous and emergent nature of communications across networks like Twitter makes them suitable for discussing events (e.g., natural disasters...
Show moreAs the amount of computer mediated information (e.g., emails, documents, multi-media) we need to process grows, our need to rapidly sort, organize and store electronic information likewise increases. In order to store information effectively, we must find ways to sort through it and organize it in a manner that facilitates efficient retrieval. The instantaneous and emergent nature of communications across networks like Twitter makes them suitable for discussing events (e.g., natural disasters) that are amorphous and prone to rapid changes. It can be difficult for an individual human to filter through and organize the large amounts of information that can pass through these types of social networks when events are unfolding rapidly. A common feature of social networks is the images (e.g., human faces, inanimate objects) that are often used by those who send messages across these networks. Humans have a particularly strong ability to recognize and differentiate between human Faces. This effect may also extend to recalling information associated with each human Face. This study investigated the difference between human Face images, non-human Face images and alphanumeric labels as retrieval cues under different levels of Task Load. Participants were required to recall key pieces of event information as they emerged from a Twitter-style message feed during a simulated natural disaster. A counter-balanced within-subjects design was used for this experiment. Participants were exposed to low, medium and high Task Load while responding to five different types of recall cues: (1) Nickname, (2) Non-Face, (3) Non-Face (&) Nickname, (4) Face and (5) Face (&) Nickname. The task required participants to organize information regarding emergencies (e.g., car accidents) from a Twitter-style message feed. The messages reported various events such as fires occurring around a fictional city. Each message was associated with a different recall cue type, depending on the experimental condition. Following the task, participants were asked to recall the information associated with one of the cues they worked with during the task. Results indicate that under medium and high Task Load, both Non-Face and Face retrieval cues increased recall performance over Nickname alone with Non-Faces resulting in the highest mean recall scores. When comparing medium to high Task Load: Face (&) Nickname and Non-Face significantly outperformed the Face condition. The performance in Non-Face (&) Nickname was significantly better than Face (&) Nickname. No significant difference was found between Non-Faces and Non-Faces (&) Nickname. Subjective Task Load scores indicate that participants experienced lower mental workload when using Non-Face cues than using Nickname or Face cues. Generally, these results indicate that under medium and high Task Load levels, images outperformed alphanumeric nicknames, Non-Face images outperformed Face images, and combining alphanumeric nicknames with images may have offered a significant performance advantage only when the image is that of a Face. Both theoretical and practical design implications are provided from these findings.
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Date Issued: 2014
Identifier: CFE0005318, ucf:50524
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0005318

Title: Acute Pro-inflammatory Immune Response Following Different Resistance Exercise Protocols in Trained Men.
Creator: Wells, Adam, Hoffman, Jay, Stout, Jeffrey, Fukuda, David, Oliveira, Leonardo, University of Central Florida
Abstract / Description: The successful regeneration of muscle tissue is dependent upon the infiltration of phagocytic CD14++CD16- monocytes that support the proliferation and differentiation of myogenic precursor cells. Physiologically, the magnitude of the cellular response following resistance exercise is dictated by the level of receptor expression on the plasma membrane of the monocyte, as well as the secretion of their cognate ligands from tissue resident cells. However, it remains unclear whether the innate...
Show moreThe successful regeneration of muscle tissue is dependent upon the infiltration of phagocytic CD14++CD16- monocytes that support the proliferation and differentiation of myogenic precursor cells. Physiologically, the magnitude of the cellular response following resistance exercise is dictated by the level of receptor expression on the plasma membrane of the monocyte, as well as the secretion of their cognate ligands from tissue resident cells. However, it remains unclear whether the innate pro-inflammatory immune response varies with different resistance training protocols, and how it may impact recovery and the muscle remodeling process. Therefore, the purpose of this investigation was to examine temporal changes in the expression of chemotactic and adhesion receptors following an acute bout of high-volume, moderate-intensity (VOL) versus high-intensity, low-volume (HVY) lower-body resistance exercise in experienced, resistance trained men. Changes in receptor expression were assessed in conjunction with plasma concentrations of MCP-1, TNF?, and cortisol. Ten resistance-trained men (90.1 (&)#177; 11.3 kg; 176.0 (&)#177; 4.9 cm; 24.7 (&)#177; 3.4 yrs; 14.1 (&)#177; 6.1% body fat) performed each resistance exercise protocol in a random, counterbalanced order. Blood samples were obtained at baseline (BL), immediately (IP), 30 minutes (30P), 1 hour (1H), 2 hours (2H), and 5 hours (5H) post-exercise. Analysis of target receptor expression on CD14++CD16- monocytes was completed at BL, IP, 1H, 2H and 5H time points via flow cytometric analysis. Plasma concentrations of myoglobin, and LDH AUC were significantly greater following HVY compared to VOL (p = 0.003 and p = 0.010 respectively). Changes in plasma TNF?, MCP-1, and expression of CCR2, CD11b, and GCR on CD14++CD16- monocytes were similar following HVY and VOL. When collapsed across groups, TNF? was significantly increased at IP, 30P, 1H and 2H post-exercise (p = 0.001 (-) 0.004), while MCP-1 was significantly elevated at all post-exercise time points (p = 0.002 (-) 0.033). CCR2 expression was significantly lower at IP, 1H, 2H and 5H post-exercise (p = 0.020 (-) 0.040). In contrast, CD11b receptor expression was significantly greater at 1H relative to BL (p = 0.001), while GCR expression was not significantly different from baseline at any time point. As expected, plasma cortisol concentrations were significantly higher following VOL compared to HVY (p = 0.001), although this did not appear to be related to changes in receptor expression. Plasma testosterone concentrations and TNFr1 receptor expression did not appear to be affected by resistance exercise. Our results do not support a role for cortisol in the modulation of CCR2 receptors in vivo, while the degree of muscle damage does not appear to influence plasma concentrations of TNF?, or MCP-1. It is therefore likely that both HVY and VOL protocols constitute an exercise stimulus that is sufficient enough to promote a robust pro-inflammatory response, which is similar in timing and magnitude.
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Date Issued: 2015
Identifier: CFE0005736, ucf:50088
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0005736

Title: A Case Study Exploring the Relationship between Culturally Responsive Teaching and a Mathematical Practice of the Common Core State Standards.
Creator: Howse, Tashana, Dixon, Juli, Haciomeroglu, Erhan, Andreasen, Janet, Adams, Thomasenia, University of Central Florida
Abstract / Description: This collective case study explores the nature of the relationship between teachers' use of culturally responsive teaching (CRT) practices and students' engagement in constructing viable arguments and critiquing the reasoning of others (SMP3). This study was informed by the Common Core State Standards Initiative related to developing mathematically proficient students through the use of student engagement practices consistent with the standards for mathematical practice. As a means to support...
Show moreThis collective case study explores the nature of the relationship between teachers' use of culturally responsive teaching (CRT) practices and students' engagement in constructing viable arguments and critiquing the reasoning of others (SMP3). This study was informed by the Common Core State Standards Initiative related to developing mathematically proficient students through the use of student engagement practices consistent with the standards for mathematical practice. As a means to support teachers' facilitating specific student engagement practices, professional development was provided. This study is situated in the growing body of research associated with student engagement and cultural identity. The case of two teachers was defined from interviews, classroom observations, journal prompts, and student artifacts. Data was collected before, during, and after professional development following a cross-case analysis. Four themes emerged: (a) shift in teacher practice; (b) depth and breadth of the knowledge of culturally responsive teaching and standard for mathematical practice three; (c) teacher reflection and reception; and (d) classroom management. The findings suggest that the shift in teacher practice can be supported by professional development focused on reflective practice. This shift is impacted by classroom management and teachers' depth and breadth of their knowledge of CRT and SMP3.
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Date Issued: 2013
Identifier: CFE0005005, ucf:50009
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0005005

Title: THE INCOMPATIBILITY OF FREEDOM OF THE WILL AND ANTHROPOLOGICAL PHYSICALISM.
Creator: Gonzalez, Ariel, Rodgers, Travis, University of Central Florida
Abstract / Description: Many contemporary naturalistic philosophers have taken it for granted that a robust theory of free will, one which would afford us with an agency substantial enough to render us morally responsible for our actions, is itself not conceptually compatible with the philosophical theory of naturalism. I attempt to account for why it is that free will (in its most substantial form) cannot be plausibly located within a naturalistic understanding of the world. I consider the issues surrounding an...
Show moreMany contemporary naturalistic philosophers have taken it for granted that a robust theory of free will, one which would afford us with an agency substantial enough to render us morally responsible for our actions, is itself not conceptually compatible with the philosophical theory of naturalism. I attempt to account for why it is that free will (in its most substantial form) cannot be plausibly located within a naturalistic understanding of the world. I consider the issues surrounding an acceptance of a robust theory of free will within a naturalistic framework. Timothy O'Connor's reconciliatory effort in maintaining both a scientifically naturalist understanding of the human person and a full-blooded theory of agent-causal libertarian free will is considered. I conclude that Timothy O'Connor's reconciliatory model cannot be maintained and I reference several conceptual difficulties surrounding the reconciliation of agent-causal libertarian properties with physical properties that haunt the naturalistic libertarian.
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Date Issued: 2014
Identifier: CFH0004628, ucf:45292
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH0004628

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