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Title: An extension to the best numerical integration formula development.
Creator: Medina Viedas, Jorge, Patz, Benjamin W., Engineering
Abstract / Description: University of Central Florida College of Engineering Thesis; A mathematical analysis seeking an accurate measure of the worth of numerical integration techniques used for real-time digital flight simulation problems is presented. This investigation allows the subject of ""best integration methods to be pursued making emphasis on the choice of practical steps and the use of available mathematical techniques to illustrate and evaluate a potential root matching approach involving a selected...
Show moreUniversity of Central Florida College of Engineering Thesis; A mathematical analysis seeking an accurate measure of the worth of numerical integration techniques used for real-time digital flight simulation problems is presented. This investigation allows the subject of ""best integration methods to be pursued making emphasis on the choice of practical steps and the use of available mathematical techniques to illustrate and evaluate a potential root matching approach involving a selected first-order differential system. This study allows certain evaluational techniques to be developed. Notable among these are the schemes for comparing roots of sampled ideal integrators to roots of sampled approximated integrators, the development of an integration and of an iteration formula, and the creation of a computer program.
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Date Issued: 1983
Identifier: CFR0004427, ucf:52975
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFR0004427

Title: AN EXPLORATION OF MATERIALS FOR MUSIC INTEGRATION IN ELEMENTARY SCIENCE EDUCATION.
Creator: Mills, Nicole, Everett, Robert, University of Central Florida
Abstract / Description: Strong educators always look for different ways to excite and enthrall their students in the curriculum. The field of science education often loses student interest due to the complexities and vocabulary found in the scientific realm. Incorporating music into the classroom has shown positive results as a way to integrate student learning and a different way of facilitating students in the learning process (Brewer, 1992; Davies, 200). Resources for implementing the integration of music and...
Show moreStrong educators always look for different ways to excite and enthrall their students in the curriculum. The field of science education often loses student interest due to the complexities and vocabulary found in the scientific realm. Incorporating music into the classroom has shown positive results as a way to integrate student learning and a different way of facilitating students in the learning process (Brewer, 1992; Davies, 200). Resources for implementing the integration of music and science exist throughout the Internet in a variety of mediums. This study looks at the availability of said resources and the concepts they cover, for what students they are intended for, how are they intended to be used and the level of accuracy they maintain. Those resources upholding the accuracy desired for use in the classroom were then compiled onto one webpage for use by elementary science educators. The webpage is open and free to the public and may be shared.
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Date Issued: 2011
Identifier: CFH0003843, ucf:44692
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH0003843

Title: INTEGRABILITY OF A SINGULARLY PERTURBED MODEL DESCRIBING GRAVITY WATER WAVES ON A SURFACE OF FINITE DEPTH.
Creator: Little, Steven, Tovbis, Alexander, University of Central Florida
Abstract / Description: Our work is closely connected with the problem of splitting of separatrices (breaking of homoclinic orbits) in a singularly perturbed model describing gravity water waves on a surface of finite depth. The singularly perturbed model is a family of singularly perturbed fourth-order nonlinear ordinary differential equations, parametrized by an external parameter (in addition to the small parameter of the perturbations). It is known that in general separatrices will not survive a singular...
Show moreOur work is closely connected with the problem of splitting of separatrices (breaking of homoclinic orbits) in a singularly perturbed model describing gravity water waves on a surface of finite depth. The singularly perturbed model is a family of singularly perturbed fourth-order nonlinear ordinary differential equations, parametrized by an external parameter (in addition to the small parameter of the perturbations). It is known that in general separatrices will not survive a singular perturbation. However, it was proven by Tovbis and Pelinovsky that there is a discrete set of exceptional values of the external parameter for which separatrices do survive the perturbation. Since our family of equations can be written in the Hamiltonian form, the question is whether or not survival of separatrices implies integrability of the corresponding equation. The complete integrability of the system is examined from two viewpoints: 1) the existence of a second first integral in involution (Liouville integrability), and 2) the existence of single-valued, meromorphic solutions (complex analytic integrability). In the latter case, a singular point analysis is done using the technique given by Ablowitz, Ramani, and Segur (the ARS algorithm) to determine whether the system is of Painlevé-type (P-type), lacking movable critical points. The system is shown by the algorithm to fail to be of P-type, a strong indication of nonintegrability.
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Date Issued: 2008
Identifier: CFE0002109, ucf:47550
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0002109

Title: ARTS INTEGRATION: LEARNING THROUGH AND WITH THE ARTS, A CURRICULAR PROCESS AND AS A COLLABORATIVE ENGAGEMENT.
Creator: Shank, Sonja, Hopp, Dr. Carolyn, University of Central Florida
Abstract / Description: The world of education is constantly changing. As our culture and society evolves and grows, our educational practices must follow suit to reach the minds of tomorrow in a meaningful way. Arts integration is the teaching practice of using the arts as a lens through which students can view and articulate other subject matter. Integration of dance, music and visual arts promotes creativity and interest but also nurtures a meaningful educational experience. This confluence of educational...
Show moreThe world of education is constantly changing. As our culture and society evolves and grows, our educational practices must follow suit to reach the minds of tomorrow in a meaningful way. Arts integration is the teaching practice of using the arts as a lens through which students can view and articulate other subject matter. Integration of dance, music and visual arts promotes creativity and interest but also nurtures a meaningful educational experience. This confluence of educational disciplines will engage our students and excite them about learning. It is important to recognize that " culture populated by a people whose imagination is impoverished has a static future n such a culture there will be little change because there will be little sense of possibility" (Eisner, 2002, p. 5). Integrating the arts into the core curriculum empowers our students to believe in possibility and provides them a future of potential. The purpose of this study is to examine the process of arts integration within an urban middle school setting. The school chosen will be observed because it is established as an arts magnet school, serving the community as an Academy for the Visual and Performing arts. An arts magnet middle school embraces the principles of seeing artfully and uses the arts to illuminate and give dimension to the other core subject matter. The structure for the model of curriculum integration adapted by the arts magnet school faculty will be determined by analyzing interview transcripts, field notes, and faculty meeting notes. Classroom observations will also serve to provide evidence of implementation of the arts integrative process into the curriculum. The results will show how arts integration acts as learning "through" and "with" the arts as a result of a curricular process and collaborative engagement.
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Date Issued: 2013
Identifier: CFH0004358, ucf:45008
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH0004358

Title: DETERMINANTS OF TURKISH POILICE OFFIERS' PERCEPTION OF INTEGRITY: IMPACT OF ORGANIZATIONAL CULTURE.
Creator: Kucukuysal, Bahadir, Wan, Thomas, University of Central Florida
Abstract / Description: The purpose of this research was to examine the influence of police organizational culture on officers' perception of integrity in the Turkish National Police (TNP). Adopting an organizational rather than an individualistic perspective, this study focused on police organizational culture to investigate the causes of integrity problems in the TNP. While focusing on police organizational culture, this study also aimed to determine to what extent officers' perceptions of integrity are...
Show moreThe purpose of this research was to examine the influence of police organizational culture on officers' perception of integrity in the Turkish National Police (TNP). Adopting an organizational rather than an individualistic perspective, this study focused on police organizational culture to investigate the causes of integrity problems in the TNP. While focusing on police organizational culture, this study also aimed to determine to what extent officers' perceptions of integrity are influenced by personal and occupational attributes such as age, gender, rank, income, educational level, years of employment, and assignment type. The research was conducted in Turkey's two largest cities, Istanbul and Ankara, as well as the largest city of southeastern Turkey, Diyarbakir. Three hundred officers, consisting of 200 regular police officers and 100 ranked officers, were selected from each city, making a sample size of 900 in total. With a total of 507 respondents, after eliminating cases with missing values, the study achieved a 57% response rate. Structural equation modeling was used to test the hypothesized relationships, since it is the most appropriate statistical method for testing hypotheses based on relations among latent and observed variables. This method enabled the researcher to measure the perception of police integrity and the perception of police organizational culture with their multiple indicators, providing rigorous measurements for both constructs. The results of the statistical analysis supported the research hypothesis. The findings showed that officers' perception of police organizational culture negatively influenced their perception of integrity. It was also found that officers' age and educational level also had a statistically significant influence on their perception of integrity.
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Date Issued: 2008
Identifier: CFE0002242, ucf:47898
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0002242

Title: ON CARICOM AND THE VARYING LEVELS OF AND MOTIVES FOR INTEGRATION AMONG THE MEMBER STATES.
Creator: Scriven, Joshua, Sadri, Houman, University of Central Florida
Abstract / Description: In an era of rapid transport and communication, spectators have come to expect a bridging of the classic political, social, and economic divide between states. It is taken for granted that states have more to work together than to strive independently for. CARICOM is the Caribbean's experiment at regional integration and it member states have pledged their ostensible support. This study is aimed at gauging the true levels of enthusiasm of the member states, which have varied among them and...
Show moreIn an era of rapid transport and communication, spectators have come to expect a bridging of the classic political, social, and economic divide between states. It is taken for granted that states have more to work together than to strive independently for. CARICOM is the Caribbean's experiment at regional integration and it member states have pledged their ostensible support. This study is aimed at gauging the true levels of enthusiasm of the member states, which have varied among them and over time. By analysing the trade pattern of the Members with each other in comparison with the rest of the world, the commitment of the member states was ascertained. The study explores various issues and characteristics of the region that help to bolster or threaten increased cooperation among the Members. Among these, external dependency, social peculiarities, and the vulnerability of the Members makes for an interesting and uncertain prediction for the group's future. Using various indicators and indices from such sources as the World Bank, International Monetary Fund, and the Commonwealth Secretariat the states were compared and their various situations analysed to give reason for their varied levels of commitment to regionalisation through CARICOM. Certainly possessing more in common than not, the Members prove an exception, or perhaps a refutation to the idea of international cooperation being positively affected or catalysed by commonality.
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Date Issued: 2012
Identifier: CFH0004235, ucf:52901
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH0004235

Title: "BACK" TO THE FUTURE: AN EVALUATION OF MORPHOLOGICAL INTEGRATION IN KYPHOSIS.
Creator: Ceuninck, Kristyna L, Starbuck, John, University of Central Florida
Abstract / Description: Morphological integration refers to the interdependence of two or more phenotypic structures. The morphological integration concept is based on the fact that parts of complex organisms do not vary randomly and instead display degrees of non-independence that are thought to occur from shared genetic or developmental origins, and/or functional demands. Integrated traits may develop, evolve, and be inherited together. One instance of morphological integration can be found between the vertebral...
Show moreMorphological integration refers to the interdependence of two or more phenotypic structures. The morphological integration concept is based on the fact that parts of complex organisms do not vary randomly and instead display degrees of non-independence that are thought to occur from shared genetic or developmental origins, and/or functional demands. Integrated traits may develop, evolve, and be inherited together. One instance of morphological integration can be found between the vertebral column and the skull. Due to the position of the skull resting atop of the vertebral column, posture may influence skull development and overall craniofacial morphology. Morphological integration within or between structures is typically statistically assessed by exploring correlation and covariation patterns among biological structures of interest. In this study, an analysis of morphological integration was carried out by studying covariation of morphometric measures from the vertebral column and craniofacial complex. Age- and sex-matched, de-identified computed tomography images of individuals with kyphosis spinal malformation (n = 15) and controls (n = 19) were acquired from Florida Hospital. It is hypothesized that the sample of individuals with kyphosis will exhibit statistically significant covariance differences relative to the control group for T6 vertebral and midfacial linear distance measurements. Anatomical landmarks were identified on the T6 thoracic vertebrae (n = 6) and the midfacial skeleton (n = 6), and XYZ coordinates were recorded for analysis. A subset of 10 individuals (5 kyphosis, 5 controls) individuals were measured on two occasions to assess reliability and measurement error. An Euclidean Distance Matrix Analysis (EDMA) of morphological integration was carried out on the entire sample by calculating correlation values for paired linear distance measurements (one vertebral and one midfacial) separately for the kyphosis and control samples (n = 225 for each sample). Next, EDMA calculated correlation differences and statistically assessed significance using a non-parametric bootstrap (1,000 resamples) and confidence interval testing (? ? 0.10). Only 35 of the 225 (15.56%) correlation differences were statistically significant. Patterns of variation among these significant correlation differences were explored by examining sample directionality of differences, sign patterns, and strengths. The relevance of these results to clinical and anthropological pursuits are discussed. Several recommendations for future investigations are made.
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Date Issued: 2018
Identifier: CFH2000286, ucf:45812
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH2000286

Title: AN EXPLORATION OF THE IMPLEMENTATION OF MUSIC INTEGRATION IN THE MIDDLE SCHOOL SOCIAL STUDIES CLASSROOMS.
Creator: Skeen, Nicole, Russell, William, University of Central Florida
Abstract / Description: "Music is the biggest tool of revolution - the best way to reach out the youth and involve themï¿½" (Kher, n.d.). Music has the ability to impact so many areas of life. Music is universal, and regardless of language, meaning and emotions can be conveyed. Imagine if this was harnessed and utilized as an effective teaching tool for students? Music has played a significant role in history, but is often overlooked when history is taught. Utilization of music in the social studies classroom can...
Show more"Music is the biggest tool of revolution - the best way to reach out the youth and involve themï¿½" (Kher, n.d.). Music has the ability to impact so many areas of life. Music is universal, and regardless of language, meaning and emotions can be conveyed. Imagine if this was harnessed and utilized as an effective teaching tool for students? Music has played a significant role in history, but is often overlooked when history is taught. Utilization of music in the social studies classroom can take the form of time period pieces, cultural music, mnemonics for memorization, films, and much more. While it can be an effective tool for educating students, are teachers actually integrating it into their lesson plans? Using a stratified random sampling procedure, a survey was sent to teachers in the Central Florida region to gain insight into the topic. It was seen, that while over half (60%) of the educators indicated music could be an effective teaching tool, almost all (95%) used it very often, often, or sometimes in some way, shape, or form. Several teachers indicated that they did not have the time, resources, or the training to integrate music into their social studies classrooms. This research is only a starting point for additional regional studies, as well as more focused studies through which resources may be developed.
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Date Issued: 2015
Identifier: CFH0004810, ucf:45455
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH0004810

Title: Integration of High-Q filters with Highly Efficient Antennas.
Creator: Yusuf, Yazid, Gong, Xun, Wahid, Parveen, Jones, W, Wu, Xinzhang, Wang, Jing, University of Central Florida
Abstract / Description: The integration of high-quality (Q)-factor 3-D filters with highly efficient antennas is addressed in this dissertation. Integration of filters and antennas into inseparable units eliminates the transitions between the otherwise separate structures resulting in more compact and efficient systems. The compact, highly efficient integrated 3-D filter/antenna systems, enabled by the techniques developed herein, allow for the realization of integrated RF front ends with significantly- reduced form...
Show moreThe integration of high-quality (Q)-factor 3-D filters with highly efficient antennas is addressed in this dissertation. Integration of filters and antennas into inseparable units eliminates the transitions between the otherwise separate structures resulting in more compact and efficient systems. The compact, highly efficient integrated 3-D filter/antenna systems, enabled by the techniques developed herein, allow for the realization of integrated RF front ends with significantly- reduced form factors.Integration of cavity filters with slot antennas in a single planar substrate is first demonstrated. Due to the high Q factor of cavity resonators, the efficiency of the integrated filter/antenna system is found to be the same as that of a reference filter with the same filtering characteristics. This means a near 100% efficient slot antenna is achieved within this integrated filter/antenna system. To further reduce the footprint of the integrated systems, vertically integrated filter/antenna systems are developed. We then demonstrate the integration of cavity filters with aperture antenna structures which enable larger bandwidths compared with slot antennas. The enhanced bandwidths are made possible through the excitation and radiation of surface waves. To obtain omnidirectional radiation patterns , we integrate cavity filters with monopole antennas. Finally, the integration of filters with patch antennas is addressed. Unlike the other filter/antenna integration examples presented, in which the antenna is utilized as an equivalent load, the patch antenna provides an additional pole in the filtering function.The presented techniques in this dissertation can be applied for filter/antenna integration in all microwave, and millimeter-wave frequency regions.
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Date Issued: 2011
Identifier: CFE0004183, ucf:49075
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0004183

Title: Enhancement of Antenna Array Performance Using Reconfigurable Slot-Ring Antennas and Integrated Filter/Antennas.
Creator: Li, Tianjiao, Gong, Xun, Wahid, Parveen, Yuan, Jiann-Shiun, Abdolvand, Reza, Kuebler, Stephen, University of Central Florida
Abstract / Description: As modern communication system technology develops, the demand for devices with smaller size, higher efficiency, and more functionality has increased dramatically. In addition, highly integrated RF-front-end modules with a reduced footprint and less transition loss between cascaded devices are desirable in most advanced wireless communication systems. Antenna arrays are widely used in wireless communication systems due to their high directivity and beam steering capability. Moreover, antenna...
Show moreAs modern communication system technology develops, the demand for devices with smaller size, higher efficiency, and more functionality has increased dramatically. In addition, highly integrated RF-front-end modules with a reduced footprint and less transition loss between cascaded devices are desirable in most advanced wireless communication systems. Antenna arrays are widely used in wireless communication systems due to their high directivity and beam steering capability. Moreover, antenna arrays are preferred in mobile communication systems for diversity reception to reduce signal fading effects. In order to meet the various requirements of rapidly developing wireless communication systems, low cost, compact, multifunctional integrated antenna arrays are in high demand.Reconfigurable antennas that can flexibly adapt to different applications by dynamically changing their frequency and radiation properties have attracted a lot of attention. Frequency, radiation pattern, polarization, or a combination of two or more of these parameters in the reconfiguration of antennas was studied and presented in recent years. A single reconfigurable antenna is able to replace multiple traditional antennas and accomplish different tasks. Thus, the complexity of wireless communication systems can be greatly reduced with a smaller device size. On the other hand, the integration of antennas with other devices in wireless communication systems that can improve the efficiency and shrink the device size is a growing trend in antenna technology. Compact and highly efficient integrated filters and antennas were studied previously; the studies show that by seamlessly co-designing filters with patch antennas, the fractional bandwidth (FBW) of the antennas can be enhanced as compared to stand-alone antennas.However, the advantages of both the reconfigurable antenna and integrated filter/antenna technology have not been fully applied to antenna array applications. Therefore, this dissertation explores how to maximize the antenna array performance using reconfigurable antennas and integrated filter/antennas. A continuously frequency reconfigurable slot-ring antenna/array with switches and varactors is presented first. By changing the state of the loaded switches, the reconfigurable slot-ring antenna/array is able to operate as an L-band slot-ring antenna or a 2(&)#215;2 S-band slot-ring antenna array. In each frequency band, the operation frequency of the antenna/array can be continuously tuned with the loaded varactors. To further enhance the functionality of the reconfigurable slot-ring antenna array, a dual-polarized fractal-shaped reconfigurable slot-ring antenna/array is developed with a reduced number of switches and an increased FBW. Additionally, ground plane solutions are explored to achieve single-sided radiation. The benefits of filter/antenna integration are also investigated in both linearly polarized patch phased arrays and circularly polarized patch antenna arrays. Finally, a preliminary study of a tunable integrated evanescent mode filter/antenna is conducted to validate the concept of combining reconfigurable antennas and integrated filter/antennas.
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Date Issued: 2017
Identifier: CFE0006950, ucf:51661
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006950

Title: A Multiple Case Study Analysis of Technology Integration Knowledge by Practicing Elementary Teachers in an Urban Charter School.
Creator: Minor, Kendra, Hirumi, Atsusi, Hopp, Carolyn, Hartshorne, Charles, Beverly, Monifa, University of Central Florida
Abstract / Description: The purpose of this dissertation was to explore the perceived and demonstrated technological pedagogical content knowledge TPACK) of practicing elementary teachers in an urban charter school setting. Contextual factors that influence teachers' abilities to apply technology integration knowledge were also identified. A qualitative research design with multiple case study strategy was used to study practicing teachers in a charter school setting in two phases. The first phase of the study...
Show moreThe purpose of this dissertation was to explore the perceived and demonstrated technological pedagogical content knowledge TPACK) of practicing elementary teachers in an urban charter school setting. Contextual factors that influence teachers' abilities to apply technology integration knowledge were also identified. A qualitative research design with multiple case study strategy was used to study practicing teachers in a charter school setting in two phases. The first phase of the study included nine participants and used the Teachers' Knowledge of Teaching and Technology Survey to garner insight on teachers' perceived technological pedagogical content knowledge. Descriptive statistical procedures were used to calculate a mean score for each subscale of the TPACK components. Of the nine teachers, two teachers volunteered to participate in the second phase of the study in addition to two administrators. Data collection methods included document collection, observations, and interviews. Within-analysis procedures were used to specify each participant as an individual case. Interviews with school administrators provided insight into contextual factors at the school. Lastly, cross-case analysis procedures were used to construct the final narrative. The findings from Phase I indicated teacher scores related to statements concerning technology-related components: technology knowledge (Mean = 3.67, SD =.62), technological content knowledge (Mean = 3.67, SD=.45), technological pedagogical knowledge (Mean = 3.74, SD=.68), and technological pedagogical content knowledge (Mean = 3.6, SD=.94) were neutral. Findings from the within-analysis and cross-case analysis revealed that both teachers used all of the components in practice with limited to no use of technological content knowledge. The findings from the within-analysis and cross-case analysis revealed that teachers: (a) had a solid foundation of technology knowledge, (b) had limited knowledge of technological content knowledge, (c) supported pedagogical goals, and (d) addressed student learning needs. In addition, the findings revealed that contextual factors related to the teachers' use of technology integration knowledge were resource-related. The discussion and implications highlighted the need for professional development and up-to-date resources for teachers in urban charter schools.
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Date Issued: 2014
Identifier: CFE0005211, ucf:50646
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0005211

Title: The Integration of Technology Into Instruction by Elementary Teachers In Brevard County, Florida: An Investigative Study.
Creator: Spainhour, Cynthia, Allen, Kay, Gunter, Glenda, Xu, Lihua, University of Central Florida
Abstract / Description: Technology has become a part of the very fabric of society today. Technology's infiltration into business, industries, the medical field, and entertainment has accounted for huge advances. However, in the field of education the impact technology has had is regarded as less impressive. Muller, Wood, Wiloughby, Ross, and Specht (2008) stated (")it is critical to understand teachers' perspectives regarding computer integration in the classrooms(") (p.1523). With the Improving America's Schools...
Show moreTechnology has become a part of the very fabric of society today. Technology's infiltration into business, industries, the medical field, and entertainment has accounted for huge advances. However, in the field of education the impact technology has had is regarded as less impressive. Muller, Wood, Wiloughby, Ross, and Specht (2008) stated (")it is critical to understand teachers' perspectives regarding computer integration in the classrooms(") (p.1523). With the Improving America's Schools Act of 1994 (Public Law 103-382) the integration of technology in schools should be strongly evident. Currently, twenty years after the commitment to develop technologically literate students, technology integration should be well defined, seamless in its usefulness within the learning environment, a part of the very fabric of the educational setting, and consist of a proven track record verifying the positive results for utilization in student learning and achievements. However, a review of the relevant literature revealed the goal has not been achieved and the same issues related to the integration of technology into education are still being discussed, researched, and questioned today as they were in its infancy (Anthony, 2011; Bauer (&) Kenton, 2005; Roschelle, Pea, Hoadley, Gordin, (&) Means, 2000). Allowing teachers to voice what integration meant to them in both practice and definition and the barriers encountered, could shed light on the underutilization of use discovered in literature. New insights provided from teachers could also be utilized by administration and policymakers towards the development of new policies and mandates. Taking a qualitative, investigative approach, two individual and two focus group (n=6, n=8) interviews from four elementary schools in Brevard County were conducted which focused on understanding the practices and experiences of teachers. Results found time, support structures provided by administration, and specific professional development and training's were challenges that hampered successful implementation.
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Date Issued: 2015
Identifier: CFE0006007, ucf:51025
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006007

Title: RF LOW PASS FILTER DESIGN AND FABRICATION USING INTEGRATED PASSIVE DEVICE TECHNOLOGY.
Creator: Li, Heli, Wu, Thomas, University of Central Florida
Abstract / Description: In this thesis, the whole process of design a low pass filter (LPF) for the wireless communication application has been presented. Integrated passive device technology based on GaAs substrate has been utilized to make the LPF. Schematic simulation and electromagnetic simulations are extensively used in the design process. EM simulation is used in the selection of layout design and processing parameters for design optimization of both the inductors and IPD harmonic filters. The effective use...
Show moreIn this thesis, the whole process of design a low pass filter (LPF) for the wireless communication application has been presented. Integrated passive device technology based on GaAs substrate has been utilized to make the LPF. Schematic simulation and electromagnetic simulations are extensively used in the design process. EM simulation is used in the selection of layout design and processing parameters for design optimization of both the inductors and IPD harmonic filters. The effective use of EM simulation enables us to realize the successful development of high performance harmonic filters. To make the optimization be more flexible and also for a deeper understanding of the optimization theory, optimization using genetic algorithm is also implemented. The weight of each targets are adjustable, and a non-uniformly distributed goal for the harmonic rejection range is introduced to achieve better optimization results. The embedded LPF is built and measurement results show good agreement with the simulation data. This kind of very compact, high performance harmonic filters can be used in radio transceiver front-end modules. The realized harmonic filters have insertion loss less than 0.6 dB and harmonic rejections greater than 25 dB with a compact die size of 0.8 mm2.
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Date Issued: 2006
Identifier: CFE0001466, ucf:47091
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001466

Title: MONOLITHIC INTEGRATION OF DUAL OPTICAL ELEMENTS ON HIGH POWER SEMICONDUCTOR LASERS.
Creator: vaissie, laurent, Johnson, Eric, University of Central Florida
Abstract / Description: This dissertation investigates the monolithic integration of dual optical elements on high power semiconductor lasers for emission around 980nm wavelength. In the proposed configuration, light is coupled out of the AlGaAs/GaAs waveguide by a low reflectivity grating coupler towards the substrate where a second monolithic optical element is integrated to improve the device performance or functionality. A fabrication process based on electron beam lithography and plasma etching was developed to...
Show moreThis dissertation investigates the monolithic integration of dual optical elements on high power semiconductor lasers for emission around 980nm wavelength. In the proposed configuration, light is coupled out of the AlGaAs/GaAs waveguide by a low reflectivity grating coupler towards the substrate where a second monolithic optical element is integrated to improve the device performance or functionality. A fabrication process based on electron beam lithography and plasma etching was developed to control the grating coupler duty cycle and shape. The near-field intensity profile outcoupled by the grating is modeled using a combination of finite-difference time domain (FDTD) analysis of the nonuniform grating and a self-consistent model of the broad area active region. Improvement of the near-field intensity profile in good agreement with the FDTD model is demonstrated by varying the duty cycle from 20% to 55% and including the aspect ratio dependent etching (ARDE) for sub-micron features. The grating diffraction efficiency is estimated to be higher than 95% using a detailed analysis of the losses mechanisms of the device. The grating reflectivity is estimated to be as low as 2.10-4. The low reflectivity of the light extraction process is shown to increase the device efficiency and efficiently suppress lasing oscillations if both cleaved facets are replaced by grating couplers to produce 1.5W QCW with 11nm bandwidth into a single spot a few mm above the device. Peak power in excess of 30W without visible COMD is achieved in this case. Having optimized, the light extraction process, we demonstrate the integration of three different optical functions on the substrate of the surface-emitting laser. First, a 40 level refractive microlens milled using focused ion beam shows a twofold reduction of the full-width half maximum 1mm above the device, showing potential for monolithic integration of coupling optics on the wafer. We then show that differential quantum efficiency of 65%, the highest reported for a grating-coupled device, can be achieved by lowering the substrate reflectivity using a 200nm period tapered subwavelength grating that has a grating wavevector oriented parallel to the electric field polarization. The low reflectivity structure shows trapezoidal sidewall profiles obtained using a soft mask erosion technique in a single etching step. Finally, we demonstrate that, unlike typical methods reported so far for in-plane beam-shaping of laser diodes, the integration of a beam-splitting element on the device substrate does not affect the device efficiency. The proposed device configuration can be tailored to satisfy a wide range of applications including high power pump lasers, superluminescent diodes, or optical amplifiers applications.
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Date Issued: 2004
Identifier: CFE0000223, ucf:46253
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000223

Title: THE EFFECTS OF INTEGRATING TECHNOLOGYINTO AN 8TH GRADE SCIENCE CURRICULUM.
Creator: Brunton, Gregory, Jeanpierre, Bobby, University of Central Florida
Abstract / Description: The growing need for technological literacy has increased its presence in public classrooms more than ever before. The purpose of this research study was to study the effects of technology integration on student achievement and attitudes toward science and technology. The participants in this 18-week study involved the 86 8th grade students at Winding Hills School in Orlando, Florida. Data were collected using a pre and post vocabulary assessment, weekly vocabulary quizzes, student attitude...
Show moreThe growing need for technological literacy has increased its presence in public classrooms more than ever before. The purpose of this research study was to study the effects of technology integration on student achievement and attitudes toward science and technology. The participants in this 18-week study involved the 86 8th grade students at Winding Hills School in Orlando, Florida. Data were collected using a pre and post vocabulary assessment, weekly vocabulary quizzes, student attitude surveys, student and parent correspondence as it relates to the study such as parent notes and e-mails, and classroom observation notes. Several conclusions were made. The effects of technology on student performance as originally planned was inconclusive in this study. It was found that there was no correlation between typing assignments and student performance. Students felt that technology increased their academic performance. Students had positive attitude towards science class though the percentage decreased during the study. Students enjoyed using technology, saw it as a benefit, felt it helped them with publishing and improved their attitudes towards technology.
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Date Issued: 2005
Identifier: CFE0000375, ucf:46338
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0000375

Title: AFRICAN RELIGIOUS INTEGRATION IN FLORIDA DURING THE FIRST SPANISH PERIOD.
Creator: Beats, Christopher, Walker, Ezekiel, University of Central Florida
Abstract / Description: This thesis is an examination of the unique conditions for African-descended slaves in St. Augustine, Florida, during the First Spanish Period. St. Augustine was an important garrison at a remote point in the Spanish Empire at the edge of a hostile frontier. As such, economics were less a priority than defense. Slaves, therefore, received different treatment here than in English colonies or even other Spanish colonies. Due to the threat of Protestantism, religious adherence was more important...
Show moreThis thesis is an examination of the unique conditions for African-descended slaves in St. Augustine, Florida, during the First Spanish Period. St. Augustine was an important garrison at a remote point in the Spanish Empire at the edge of a hostile frontier. As such, economics were less a priority than defense. Slaves, therefore, received different treatment here than in English colonies or even other Spanish colonies. Due to the threat of Protestantism, religious adherence was more important as a test of loyalty than ethnicity and slaves and freed-people were able to integrate better than in other Spanish holdings. In order to explore this integration, the meticulous records of the St. Augustine clergy are used. Infant baptism rates are used to show the influence of Spanish culture as well as at least a semblance of adherence on the part of African-descended people. The baptism of adults, meanwhile, and the role of the godparent are examined to show integration and the complex nature of this unique religious phenomenon.
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Date Issued: 2007
Identifier: CFE0001809, ucf:47352
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0001809

Title: THE INTEGRATION OF MUSIC IN AN ELA CLASSROOM: CREATING PEDAGOGICAL PARODIES FOR ELEMENTARY EDUCATION.
Creator: Smith, Doranna, Jennings-Towle, Kelly, University of Central Florida
Abstract / Description: The intent of this thesis is to capitalize the effects of using music as a tool in tandem with English language arts in order for students to improve their ELA skills. Songs are already flooding the Internet and social media; such as Facebook, Instagram, Twitter, and Vine, echoing in the background of television broadcasts and commercials, and blasting across radio stations and in public areas like restaurants and malls, classroom lessons tied to current songs, are more apt to resonate with...
Show moreThe intent of this thesis is to capitalize the effects of using music as a tool in tandem with English language arts in order for students to improve their ELA skills. Songs are already flooding the Internet and social media; such as Facebook, Instagram, Twitter, and Vine, echoing in the background of television broadcasts and commercials, and blasting across radio stations and in public areas like restaurants and malls, classroom lessons tied to current songs, are more apt to resonate with students in this era. In lieu of subconsciously humming a song by popular artist such as Beyonce, Kanye West, and Taylor Swift, students could accomplish more in a classroom environment while using music as a tool. This includes using music as a tool for learning through reading, as well as teaching writing processes through song.
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Date Issued: 2017
Identifier: CFH2000171, ucf:45993
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFH2000171

Title: Anti-Immigrant Rhetoric in Western Europe: The Role of Integration Policies in Extreme Right Populism.
Creator: Martins, Nathalia, Kinsey, Barbara, Hamann, Kerstin, Turcu, Anca, University of Central Florida
Abstract / Description: The recent rise of Western Europe's extreme populist Right (EPR) parties has been attributed to the EPR's mobilization of grievances over the issue of immigration (Ignazi 1991; Taggart 1996; Fennema 1997; Schain, 1998; Mudde 1999; Brubaker 2001; Ivarsflaten 2007). This study contributes to the literature on EPR's anti-immigrant rhetoric by examining whether different integration policies play a role in conditioning anti-immigrant rhetoric, and if so, what their role is in the formulation of...
Show moreThe recent rise of Western Europe's extreme populist Right (EPR) parties has been attributed to the EPR's mobilization of grievances over the issue of immigration (Ignazi 1991; Taggart 1996; Fennema 1997; Schain, 1998; Mudde 1999; Brubaker 2001; Ivarsflaten 2007). This study contributes to the literature on EPR's anti-immigrant rhetoric by examining whether different integration policies play a role in conditioning anti-immigrant rhetoric, and if so, what their role is in the formulation of such rhetoric.This thesis is comprised of two case studies: the French assimilation approach to immigrant integration and the rhetoric of Front National's leaders Jean-Marie and Marine Le Pen; and the Dutch multicultural approach to integration and the rhetoric of Dutch Party for Freedom's leader Geert Wilders. The main hypothesis is that each leader's anti-immigrant rhetoric incorporates the shortcomings of the integration approach adopted by their respective governments. Elements of the rejection of both assimilationism and multiculturalism are detected in the FN's and PVV's rhetoric, respectively, through a careful review of secondary and primary sources of language usage in Jean-Marie and Marine Le Pen's and Wilders' speeches, interviews, and media appearances.
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Date Issued: 2012
Identifier: CFE0004409, ucf:49387
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0004409

Title: Triggered Sweep Generators Using Modern Integrated Circuits.
Creator: Klinger, Arthur Russell, null, null, Engineering
Abstract / Description: Florida Technological University College of Engineering Thesis; The oscilloscope is undoubtedly one of the most important tools in any electronics shop. Presently there are many relatively inexpensive oscilloscopes available, but triggered sweep capability is still reserved for those oscilloscopes costing more than 200 - 500 dollars. The goal of this project was to develop a respectably performing triggered sweep system at a low enough cost to allow inclusion of this valuable feature in any...
Show moreFlorida Technological University College of Engineering Thesis; The oscilloscope is undoubtedly one of the most important tools in any electronics shop. Presently there are many relatively inexpensive oscilloscopes available, but triggered sweep capability is still reserved for those oscilloscopes costing more than 200 - 500 dollars. The goal of this project was to develop a respectably performing triggered sweep system at a low enough cost to allow inclusion of this valuable feature in any oscilloscope. Two of the most important specifications of an oscilloscope are the bandwidth of the vertical amplifier, and the maximum sweep frequency. The broad class of "inexpensive oscilloscope" would include those with a maximum vertical response of 500 KHz to 5 MHz , and a maximum sweep rate of 50 KHz to 500 KHz . Most of these oscilloscopes would not have triggered sweep capability. For about double the cost, the next step upward would be a semi- professional triggered - sweep oscilloscope having a typical vertical response of 1511Hz and a sweep to roughly 2 MHz (500 nsec). Using these classifications as guidelines, a "respectably performing" triggered sweep for inexpensive oscilloscopes may be loosely defined as one having a 500 KHz (2 nsec) sweep, triggerable to at least 5 MHz. Depending on actual cost and application , greater or lesser performance could be considered entirely acceptable. A number of design variations are possible, all of which appear to be a fraction of the cost and complexity of previous designs having comparable specifications . Making this possible are integrated circuits in general, and a modern linear IC "timer" in particular. This report first describes this timer, then uses it as the main element in the generation of a linear ramp. Several trigger and gating circuits are then described. Finally, several of these subcircuits are combined to form three (out of many possible) complete triggered sweep generator systems. As an example of the results, the most expensive circuit costs about 15 dollars in single quantity, yet offers 10 volt per 200 nsec sweep rates, trigger capability from OC to above 15 MHz, trigger level and phase control, and blanking pulse output.
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Date Issued: 1973
Identifier: CFR0003511, ucf:53002
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFR0003511

Title: Monolithically Integrated InP-based Unidirectional Circulators Utilizing non-Hermiticity and Nonlinearity.
Creator: Aleahmad, Parinaz, Christodoulides, Demetrios, Delfyett, Peter, Likamwa, Patrick, Moya Cessa, Hector Manual, University of Central Florida
Abstract / Description: The need to integrate critical optical components on a single chip has been an ongoing quest in both optoelectronics and optical communication systems. Among the possible devices, elements supporting non-reciprocal transmission are of great interest for applications where signal routing and isolation is required. In this respect, breaking reciprocity is typically accomplished via Faraday rotation through appropriate magneto-optical arrangements. Unfortunately, standard light emitting...
Show moreThe need to integrate critical optical components on a single chip has been an ongoing quest in both optoelectronics and optical communication systems. Among the possible devices, elements supporting non-reciprocal transmission are of great interest for applications where signal routing and isolation is required. In this respect, breaking reciprocity is typically accomplished via Faraday rotation through appropriate magneto-optical arrangements. Unfortunately, standard light emitting optoelectronic materials like for example III-V semiconductors, lack magneto-optical properties and hence cannot be directly used in this capacity. To address these issues, a number of different tactics have been attempted in the last few years. These range from directly bonding garnets on chip, to parametric structures and unidirectional nonlinear arrangements involving ring resonators, to mention a few. Clearly, of importance will be to realize families of non-reciprocal devises that not only can be miniaturized and readily integrated on chip but they also rely on physical processes that are indigenous to the semiconductor wafer itself. Quite recently we have theoretically shown that such unidirectional systems can be implemented, provided one simultaneously exploits the presence of gain/loss processes and optical nonlinearities. In principle, these all-dielectric structures can be broadband, polarization insensitive, color-preserving, and can display appreciable isolation ratios provided they are used under pulsed conditions. In this study, we experimentally demonstrate a compact, monolithically integrated unidirectional 4(&)#215;4 optical circulator, based on non-reciprocal optical transmission through successive amplification/attenuation stages and elements with very large resonance nonlinearities associated with InGaAsP quantum wells. Our results indicate that isolation ratios over 20dB can be experimentally achieved in pulse-mode operation. Our design can be effortlessly extended to other existing optoelectronic device systems beyond InP.
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Date Issued: 2016
Identifier: CFE0006522, ucf:51373
Format: Document (PDF)
PURL: http://purl.flvc.org/ucf/fd/CFE0006522

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