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2005

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Characterization Of A Wavelength-Tunable Antenna-Coupled Infrared Microbolometer, Michael A. Gritz, Meredith Metzler, Mohamed Abdel-Rahman, Brian Monacelli, Guy Zummo, Donald Malocha, Glenn D. Boreman Jan 2005

Characterization Of A Wavelength-Tunable Antenna-Coupled Infrared Microbolometer, Michael A. Gritz, Meredith Metzler, Mohamed Abdel-Rahman, Brian Monacelli, Guy Zummo, Donald Malocha, Glenn D. Boreman

Faculty Bibliography 2000s

Wavelength tuning is demonstrated in an antenna-coupled infrared microbolometer. With a 300-mV control voltage, we observed a tuning range of 0.5 mu m near 10 mu m. A metal-oxide-semiconductor capacitor underneath the antenna arms causes the shift of resonance wavelength with applied voltage. We develop a device model that agrees well with measured results.

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Extraordinarily High-Contrast And Wide-View Liquid-Crystal Displays, Qi Hong, Thomas X. Wu, Xinyu Zhu, Ruibo Lu, Shin-Tson Wu Jan 2005

Extraordinarily High-Contrast And Wide-View Liquid-Crystal Displays, Qi Hong, Thomas X. Wu, Xinyu Zhu, Ruibo Lu, Shin-Tson Wu

Faculty Bibliography 2000s

A computer simulation model based on oblique-angle Jones matrix and Poincare sphere is developed for optimizing the design of film-compensated multidomain vertical-alignment liquid crystal display (VA-LCD). According to this design, a contrast ratio higher than 10 000:1 is predicted over the entire +/- 85 degrees viewing cone for the four-domain VA-LCD. Potential application for liquid-crystal display television is emphasized.

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Vector Discrete Nonlinear Surface Waves, Jared Hudock, Sergiy Suntsov, Demetrios N. Christodoulides, George I. Stegeman Jan 2005

Vector Discrete Nonlinear Surface Waves, Jared Hudock, Sergiy Suntsov, Demetrios N. Christodoulides, George I. Stegeman

Faculty Bibliography 2000s

It is theoretically shown that multi-component discrete vector surface waves can exist in arrays of coupled waveguides. These mutually trapped surface states primarily reside in the first waveguide of a semi-infinite array. The existence and stability of such surface waves are systematically investigated.

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Discrete Modulational Instability In Periodically Poled Lithium Niobate Waveguide Arrays, Robert Iwanow, George I. Stegeman, Roland Schiek, Yoohong Min, Wolfgang Sohler Jan 2005

Discrete Modulational Instability In Periodically Poled Lithium Niobate Waveguide Arrays, Robert Iwanow, George I. Stegeman, Roland Schiek, Yoohong Min, Wolfgang Sohler

Faculty Bibliography 2000s

Parametric gain associated with discrete modulational instability due to the second order nonlinearity chi((2))(-2 omega;omega,omega) was investigated experimentally in periodically poled lithium niobate arrays of weakly coupled channel waveguides for conditions of both positive and negative phase-mismatch for second harmonic generation.

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Ubiquitin Ligase Mkrn1 Modulates Telomere Length Homeostasis Through A Proteolysis Of Htert, Jun Hyun Kim, Sun-Mi Park, Mi Ran Kang, Sue-Young Oh, Tae H. Lee, Mark T. Muller, In Kwon Chung Jan 2005

Ubiquitin Ligase Mkrn1 Modulates Telomere Length Homeostasis Through A Proteolysis Of Htert, Jun Hyun Kim, Sun-Mi Park, Mi Ran Kang, Sue-Young Oh, Tae H. Lee, Mark T. Muller, In Kwon Chung

Faculty Bibliography 2000s

Telomere homeostasis is regulated by telomerase and a collection of associatedproteins. Telomerase is, in turn, regulated by post-translational modifications of the rate-limiting catalytic subunit hTERT. Here we show that disruption of Hsp90 by geldanamycin promotes efficient ubiquitination and proteasome-mediated degradation of hTERT. Furthermore, we have used the yeast two-hybrid method to identify a novel RING finger gene (MKRN1) encoding an E3 ligase that mediates ubiquitination of hTERT. Overexpression of MKRN1 in telomerase-positive cells promotes the degradation of hTERT and decreases telomerase activity and subsequently telomere length. Our data suggest that MKRN1 plays an important role in modulating telomere length homeostasis …

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1.4kw High Peak Power Generation From An All Semiconductor Mode-Locked Master Oscillator Power Amplifier System Based On Extreme Chirped Pulse Amplification(X-Cpa), Kyungbum Kim, Shinwook Lee, Peter J. Delfyett Jan 2005

1.4kw High Peak Power Generation From An All Semiconductor Mode-Locked Master Oscillator Power Amplifier System Based On Extreme Chirped Pulse Amplification(X-Cpa), Kyungbum Kim, Shinwook Lee, Peter J. Delfyett

Faculty Bibliography 2000s

The concept of eXtreme Chirped Pulse Amplification (X-CPA) is introduced as a novel method to overcome the energy storage limit of semiconductor optical amplifiers in ultrashort pulse amplification. A colliding pulse mode-locked semiconductor laser is developed as a master oscillator and generates 600fs pulses with 6nm bandwidth at 975nm. Using a highly dispersive chirped fiber Bragg grating (1600ps/nm) as an extreme pulse stretcher and compressor, we demonstrate similar to 16,000 times extreme chirped pulse amplification and recompression generating optical pulses of 590fs with 1.4kW of peak power. These pulses represent, to our knowledge, the highest peak power generated from an …

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Growth And Characterization Of Sputtered Bsto/Bam Multilayers, S. Srinath, N. A. Frey, R. Heindl, H. Srikanth, K. R. Coffey, N. J. Dudney Jan 2005

Growth And Characterization Of Sputtered Bsto/Bam Multilayers, S. Srinath, N. A. Frey, R. Heindl, H. Srikanth, K. R. Coffey, N. J. Dudney

Faculty Bibliography 2000s

Multilayers of Ba0.5Sr0.5TiO3 (BSTO) and BaFe12O19 (BaM), with tunable permeability and permittivity are attractive systems for radio frequency and microwave applications. We have grown multilayers of BSTO and BaM using magnetron sputtering on Al2O3 substrates. Film growth conditions such as sputtering parameters were optimized to obtain high quality multilayers. X-ray diffraction established that both BSTO and BaM were formed and cross-sectional SEM studies showed sharp interfaces between BSTO and BaM layers. Magnetization showed a large coercivity (similar to 2000 Oe) consistent with the hexaferrite component. The hysteresis loops also revealed the distinct influence of magnetocrystalline and shape anisotropies at different …

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The Factor Structure Of The Presence Questionnaire, Bob G. Witmer, Christian J. Jerome, Michael J. Singer Jan 2005

The Factor Structure Of The Presence Questionnaire, Bob G. Witmer, Christian J. Jerome, Michael J. Singer

Faculty Bibliography 2000s

Constructing a valid measure of presence and discovering the factors that contribute to presence have been much sought after goals of presence researchers and at times have generated controversy among them. This paper describes the results of principal-components analyses of Presence Questionnaire (PQ) data from 325 participants following exposure to immersive virtual environments. The analyses suggest that a 4-factor model provides the best fit to our data. The factors are Involvement, Adaptation/Immersion, Sensory Fidelity, and Interface Quality. Except for the Adaptation/Immersion factor, these factors corresponded to those identified in a cluster analysis of data from an earlier version of the …

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Homoserine And Asparagine Are Host Signals That Trigger In Planta Expression Of A Pathogenesis Gene In Nectria Haematococca, Zhennai Yang, Linda M. Rogers, Yuanda Song, Wenjin Guo, P. E. Kolattukudy Jan 2005

Homoserine And Asparagine Are Host Signals That Trigger In Planta Expression Of A Pathogenesis Gene In Nectria Haematococca, Zhennai Yang, Linda M. Rogers, Yuanda Song, Wenjin Guo, P. E. Kolattukudy

Faculty Bibliography 2000s

Some pathogenesis-related genes are expressed in fungi only when the pathogen is in the host, but the host signals that trigger these gene expressions have not been identified. Virulent Nectria haematococca infects pea plants and requires either pelA, which is induced by pectin, or pelD, which is induced only in planta. However, the host signal(s) that trigger pelD expression was unknown. Here we report the isolation of the host signals and identify homoserine and asparagine, two free amino acids found in uniquely high levels in pea seedlings, as the pelD-inducing signals. N. haematococca has evolved a mechanism to sense the …

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Project-Management Tools For Libraries: A Planning And Implementation Model Using Microsoft Project 2000, Ying Zhang, Corinne Bishop Jan 2005

Project-Management Tools For Libraries: A Planning And Implementation Model Using Microsoft Project 2000, Ying Zhang, Corinne Bishop

Faculty Bibliography 2000s

This paper discusses how Microsoft Project 2000 was utilized at the University of Central Florida Libraries to manage an e-reference implementation project. As libraries today adopt more information technologies, efficiently managing projects can be challenging. The authors' experience in the implementation of QuestionPoint e-reference software in October 2003 is described. Their conclusion illustrates that project-management tools, such as Microsoft Project 2000, offer practical workflow-management techniques for libraries. This article represents the first attempt to discuss the use of Microsoft Project 2000 to manage a library project.

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Role Of S/Se Ratio In Chemical Bonding Of As-S-Se Glasses Investigated By Raman, X-Ray Photoelectron, And Extended X-Ray Absorption Fine Structure Spectroscopies, Wenyan Li, Sudipta Seal, Clara Rivero, Cedric Lopez, Kathleen Richardson, April Pope, Alfons Schulte, Satish Myneni, Himanshu Jain, Keisha Antoine, Alfred C. Miller Jan 2005

Role Of S/Se Ratio In Chemical Bonding Of As-S-Se Glasses Investigated By Raman, X-Ray Photoelectron, And Extended X-Ray Absorption Fine Structure Spectroscopies, Wenyan Li, Sudipta Seal, Clara Rivero, Cedric Lopez, Kathleen Richardson, April Pope, Alfons Schulte, Satish Myneni, Himanshu Jain, Keisha Antoine, Alfred C. Miller

Faculty Bibliography 2000s

Chalcogenide glasses have attracted considerable attention and found various applications due to their infrared transparency and other optical properties. The As-S-Se chalcogenide glass, with its large glass-formation domain and favorable nonlinear property, is a promising candidate system for tailoring important optical properties through modification of glass composition. In this context, a systematic study on ternary As-S-Se glass, chalcogen-rich versus well-studied stochiometric compositions, has been carried out using three different techniques: Raman spectroscopy, x-ray photoelectron spectroscopy, and extended x-ray absorption fine structure spectroscopy. These complementary techniques lead to a consistent understanding of the role of S/Se ratio in chalcogen-rich As-S-Se glasses, …

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Infrared Laser Beam Temporal Fluctuations: Characterization And Filtering, José M. López-Alonso, Brian Monacelli, Javier Alda, Gary D. Boreman Jan 2005

Infrared Laser Beam Temporal Fluctuations: Characterization And Filtering, José M. López-Alonso, Brian Monacelli, Javier Alda, Gary D. Boreman

Faculty Bibliography 2000s

IR lasers are widely used in electro-optical applications, especially in detector characterization systems. These lasers can be extremely sensitive to fluctuations in the operational temperature of their cavity and other environmental factors. Due to these influences, the laser output signal normally fluctuates randomly. These variations make it difficult to characterize the laser waist position and exact focus, which in turn causes difficulty with detector measurement. We apply a multivariate statistical approach to characterize and filter these variations and to calculate the "best focus" of a carbon dioxide laser operating at 10.6 mu m. Using this method, the "best focus" can …

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Nonlinear Beam Interactions In 1d Discrete Kerr Systems, J. Meier, G. I. Stegeman, D. N. Christodoulides, R. Morandotti, M. Sorel, H. Yang, G. Salamo, J. S. Aitchison, Y. Silberberg Jan 2005

Nonlinear Beam Interactions In 1d Discrete Kerr Systems, J. Meier, G. I. Stegeman, D. N. Christodoulides, R. Morandotti, M. Sorel, H. Yang, G. Salamo, J. S. Aitchison, Y. Silberberg

Faculty Bibliography 2000s

The interaction between parallel beams in one-dimensional discrete Kerr systems has been investigated using arrays of coupled channel waveguides. The experiments were performed in AlGaAs waveguides at 1550 nm which corresponds to photon energies just below one half the semiconductor's bandgap. The input intensity and relative input phase between the input beams was varied and the output intensity patterns were recorded. Observed was behavior ranging from a linear response, to soliton interactions between moderately and then strongly localized spatial solitons. Finally the influence of multiphoton absorption and asymmetric beam inputs on these interactions was investigated at very high intensities.

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Multiple Major Increases And Decreases In Mitochondrial Substitution Rates In The Plant Family Geraniaceae, Christopher L. Parkinson, Jeffrey P. Mower, Yin-Long Qiu, Andrew J. Shirk, Keming Song, Nelson D. Young, Claude W. Depamphilis, Jeffrey D. Palmer Jan 2005

Multiple Major Increases And Decreases In Mitochondrial Substitution Rates In The Plant Family Geraniaceae, Christopher L. Parkinson, Jeffrey P. Mower, Yin-Long Qiu, Andrew J. Shirk, Keming Song, Nelson D. Young, Claude W. Depamphilis, Jeffrey D. Palmer

Faculty Bibliography 2000s

Background: Rates of synonymous nucleotide substitutions are, in general, exceptionally low in plant mitochondrial genomes, several times lower than in chloroplast genomes, 10-20 times lower than in plant nuclear genomes, and 50-100 times lower than in many animal mitochondrial genomes. Several cases of moderate variation in mitochondrial substitution rates have been reported in plants, but these mostly involve correlated changes in chloroplast and/or nuclear substitution rates and are therefore thought to reflect whole-organism forces rather than ones impinging directly on the mitochondrial mutation rate. Only a single case of extensive, mitochondrial-specific rate changes has been described, in the angiosperm genus …

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Scattering Of Low Coherence Radiation And Applications, G. Popescu, A. Dogariu Jan 2005

Scattering Of Low Coherence Radiation And Applications, G. Popescu, A. Dogariu

Faculty Bibliography 2000s

In an effort to understand complex scattering phenomena, characteristics of optical waves such as polarization, angular spectrum, and temporal coherence have been extensively studied. In this article we will review several applications where the coherence properties of broad-band radiation offer unique sensing and diagnostic capabilities.

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Numerical Model Of The Temperature Dependence Of The Up-Conversion Efficiency Of Fluoride Crystals Codoped With Ytterbium And Thulium, A. Rapaport, J. Milliez, M. Bass, A. Cassanho, H. Jenssen Jan 2005

Numerical Model Of The Temperature Dependence Of The Up-Conversion Efficiency Of Fluoride Crystals Codoped With Ytterbium And Thulium, A. Rapaport, J. Milliez, M. Bass, A. Cassanho, H. Jenssen

Faculty Bibliography 2000s

We review the role of temperature on the up-conversion efficiency of materials that are good candidates to be used as the three primary-color emitters in optically written displays. A rate equation model is given for the blue emitting material that includes temperature-dependent coefficients for energy transfer and cross relaxation. Increased temperature leads to decreased up-conversion efficiency. The effect of pumping conditions on heating the emitting material is illustrated and explained. Steps to reduce the temperature rise when pumping up-conversion materials are described.

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Development Of Head-Mounted Projection Displays For Distributed, Collaborative, Augmented Reality Applications, Jannick P. Rolland, Frank Biocca, Felix Hamza-Lup, Yanggang Ha Jan 2005

Development Of Head-Mounted Projection Displays For Distributed, Collaborative, Augmented Reality Applications, Jannick P. Rolland, Frank Biocca, Felix Hamza-Lup, Yanggang Ha

Faculty Bibliography 2000s

Distributed systems technologies supporting 3D visualization and social collaboration will be increasing in frequency and type over time. An emerging type of head-mounted display referred to as the head-mounted projection display (HMPD) was recently developed that only requires ultralight optics (i.e., less than 8 g per eye) that enables immersive multiuser, mobile augmented reality 3D visualization, as well as remote 3D collaborations. In this paper a review of the development of lightweight HMPD technology is provided, together with insight into what makes this technology timely and so unique. Two novel emerging HMPD-based technologies are then described: a teleportal WED (T-HMPD) …

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Low-Power, Multiport, Ultrafast, Parametric Switching In Cascaded Waveguide Couplers, Roland Schiek, Robert Iwanow, George Stegeman, Thomas Pertsch, Falk Lederer, Yoo Hong Min, Wolfgang Sohler Jan 2005

Low-Power, Multiport, Ultrafast, Parametric Switching In Cascaded Waveguide Couplers, Roland Schiek, Robert Iwanow, George Stegeman, Thomas Pertsch, Falk Lederer, Yoo Hong Min, Wolfgang Sohler

Faculty Bibliography 2000s

We explore an approach to multiport, phase-insensitive all-optical switching of milliwatt power signals based on linear coupling in cascaded directional couplers and on nonlinear parametric gain via the second-order nonlinearity. For the basic unit, a two-core coupler, we experimentally demonstrated ultrafast transparent switching of 1550 nm signals triggered by 5-ps-long control pulses at approximate to 775 nm with a peak power of 1.3 W. Theoretically, we show that this concept has the potential for terabit/s switching with a few picojoules control energy and without pulse degradation.

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Discrete Wave Propagation In Quadratically Nonlinear Media, Robert Iwanow Jan 2005

Discrete Wave Propagation In Quadratically Nonlinear Media, Robert Iwanow

Electronic Theses and Dissertations

Discrete models are used in describing various microscopic phenomena in many branches of science, ranging from biology through chemistry to physics. Arrays of evanescently coupled, equally spaced, identical waveguides are prime examples of optical structures in which discrete dynamics can be easily observed and investigated. As a result of discretization, these structures exhibit unique diffraction properties with no analogy in continuous systems. Recently nonlinear discrete optics has attracted a growing interest, triggered by the observation of discrete solitons in AlGaAs waveguide arrays reported by Eisenberg et al. in 1998. So far, the following experiments involved systems with third order nonlinearities. …

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The Effects Of A Single Exercise Bout On Plasma Leptin Concentration In Obese Males, George Kyriazis Jan 2005

The Effects Of A Single Exercise Bout On Plasma Leptin Concentration In Obese Males, George Kyriazis

Electronic Theses and Dissertations

Recent findings suggest that leptin may be regulated in response to abrupt changes in energy homeostasis. Therefore, it is conceivable that transient changes in energy balance induced by exercise may also regulate leptin synthesis and secretion. As such, we hypothesized that acute increases energy expenditure (i.e. exercise), may regulate leptin concentrations in obese individuals. Fifteen healthy obese males underwent either a single exercise session of moderate intensity (58.4 % ± 4.0 of VO2max) for 60 min (n=8), or served as controls (n=7). The exercise session elicited an energy expenditure of 567±80 Kcal. No significant changes in plasma leptin (pre 23.5± …

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Deriving The Density Of States For Granular Contact Forces, Philip Metzger Jan 2005

Deriving The Density Of States For Granular Contact Forces, Philip Metzger

Electronic Theses and Dissertations

The density of single grain states in static granular packings is derived from first principles for an idealized yet fundamental case. This produces the distribution of contact forces P_f(f) in the packing. Because there has been some controversy in the published literature over the exact form of the distribution, this dissertation begins by reviewing the existing empirical observations to resolve those controversies. A method is then developed to analyze Edwards' granular contact force probability functional from first principles. The derivation assumes Edwards' flat measure -- a density of states (DOS) that is uniform within the metastable regions of phase space. …

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The Effects Of Exposure To Feminist Ideology On Women's Body Image, Rachel Diane Peterson Jan 2005

The Effects Of Exposure To Feminist Ideology On Women's Body Image, Rachel Diane Peterson

Electronic Theses and Dissertations

Body image disturbance has become an increasing problem among women (Cash & Henry, 1995). Thus researchers have begun to focus on methods of prevention and intervention. Programs utilizing psychoeducation and Festinger's cognitive dissonance theory, for example, have been found to reduce body image dissatisfaction and related symptomatology. The information provided and potential impact are limited, however, because the interventions do not offer women an adaptive method of interpreting the many appearance-related messages they experience. This study sought to determine if exposure to feminist theory of body image may act as a buffer – a filter through which cultural messages about …

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Students With Either Specific Learning Disabilities Or With Attention Deficit Hyperactivity Disorder: Perceptions Of Self As Learner In Online Courses At Florida Virtual School And In The Traditional Learning Environment, Theresa Smouse Jan 2005

Students With Either Specific Learning Disabilities Or With Attention Deficit Hyperactivity Disorder: Perceptions Of Self As Learner In Online Courses At Florida Virtual School And In The Traditional Learning Environment, Theresa Smouse

Electronic Theses and Dissertations

The goal of this research study was to investigate the perception of self as learner for students with Specific Learning Disabilities (SLD) or with Attention Deficit Hyperactivity Disorder (ADHD). Students who had completed at least one mathematics or science course at Florida Virtual School, an online learning environment, were surveyed concerning their perception of self as learner in the online learning environment and in the traditional learning environment in 6 basic areas: feelings of success; level of comfort; relationship with teachers; and access to, communication with and feedback from teachers; and advantages and disadvantages of each learning environment. Results of …

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Compressed Pattern Matching For Text And Images, Tao Tao Jan 2005

Compressed Pattern Matching For Text And Images, Tao Tao

Electronic Theses and Dissertations

The amount of information that we are dealing with today is being generated at an ever-increasing rate. On one hand, data compression is needed to efficiently store, organize the data and transport the data over the limited-bandwidth network. On the other hand, efficient information retrieval is needed to speedily find the relevant information from this huge mass of data using available resources. The compressed pattern matching problem can be stated as: given the compressed format of a text or an image and a pattern string or a pattern image, report the occurrence(s) of the pattern in the text or image …

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The Effect Of Technology Acceptance On Post Secondary African- American Students Achievement In Mathematics: A Path Analytic Inquiry, Sulakshana Sen Jan 2005

The Effect Of Technology Acceptance On Post Secondary African- American Students Achievement In Mathematics: A Path Analytic Inquiry, Sulakshana Sen

Electronic Theses and Dissertations

The purpose of this research was to investigate the effect of technology acceptance on post secondary African American students' achievement in Mathematics. The study was conducted in a historically Black four-year college in Daytona Beach, Florida on students using the computer to enhance their mathematics performance in an introductory algebra mathematics course. By using Technology Acceptance Model (TAM) developed by F. Davis (1989), this study focused on variables such as perceived usefulness, perceived ease of use, computer self-efficacy, subjective norms, attitude and actual use of the computer to account the effect towards the achievement in the final exam which is …

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Green Building: Public Opinion, Semantics, And Heuristic Processing, Christina Michelle Webb Jan 2005

Green Building: Public Opinion, Semantics, And Heuristic Processing, Christina Michelle Webb

Electronic Theses and Dissertations

Research on public support for green building has, to date, been incomplete. Understanding the demographics of individuals that support green building has remained secondary to merely determining real opinions on the topic. The identity of supporters and the motivation behind their support is the focus of this research. Specifically, is support for green building dependent on the way in which the issue is framed? This research aims to focus on those that are spreading the message about green building, industry experts, and the mass public. By exposing how green building experts talk about the issue, we may begin to understand …

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Measurement And Characterization Of Microwave Transient Electromagnetic Fields Generated From Laser/Matter Interaction, Nicholas Barbieri Jan 2005

Measurement And Characterization Of Microwave Transient Electromagnetic Fields Generated From Laser/Matter Interaction, Nicholas Barbieri

Electronic Theses and Dissertations

From past experiments conducted with high intensity lasers, it has been known for some time that laser matter interactions result in the emission of short, transient electromagnetic pulses. Previous investigations into laser generated electromagnetic pulses provide basic information regarding frequencies where such pulses may be present, along with the time duration of the pulses. Such investigations have also demonstrated a number of measurement techniques in which basic information on the pulses may be obtained. The purpose of this current investigation is to obtain a more thorough description and understands of electromagnetic pulses generated for laser matter interaction. To this end, …

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The Development Of A Fuzzy Model To Quantify Training Andeducational Factors And The Resulting Impact On Student Successand Lear, Chandre Butler Jan 2005

The Development Of A Fuzzy Model To Quantify Training Andeducational Factors And The Resulting Impact On Student Successand Lear, Chandre Butler

Electronic Theses and Dissertations

The utilization of fuzzy mathematical modeling for quantification of the quality of training and educational delivery is an innovative application that can result in measurable and repeatable results. This research was designed to apply proven quantification techniques and Industrial Engineering methodologies to a nontraditional environment. The outcomes of this research provide the foundation, initial steps and preliminary validation for the development of a systematic fuzzy theoretical model to be applied for the quantification of various areas within training and education delivery. The test bed for this methodology is Orange County Public School system, the twelfth largest school district in the …

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Transparent Templates Of Principals, Mary Chang Jan 2005

Transparent Templates Of Principals, Mary Chang

Electronic Theses and Dissertations

This exploration of the personal constructs of principals was intended to reveal the transparent templates they create and attempt to fit over the realities of their world. This study sought to go beyond externally imposed descriptions of the leadership behavior of principals by exploring their personal constructs to discover the meaning that principals ascribe to their leadership behavior in anticipation and interpretation of events. Kelly's (1955) personal construct theory provided the conceptual framework for this study. The research questions were addressed through qualitative inquiry. Data were collected in a process that began with full context elicitation, laddering, and triadic analysis, …

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A Study Of Blended Learning At A Metropolitan Research University, Linda Futch Jan 2005

A Study Of Blended Learning At A Metropolitan Research University, Linda Futch

Electronic Theses and Dissertations

The goal of this research was to better understand blended learning at the University of Central Florida (UCF). The investigator examined blended learning from the institutional, faculty, and student perspectives in an attempt to capture the complexities of this learning environment. For the institutional perspective, models emerged that were critical to the development of UCF's initiative and ongoing support of both fully online and blended courses. The individual faculty perspective outlined unique characteristics of one blended course, HFT4932 - Exploring Wines of the World. The professor explained his/her choices and reasons for an instructional model as well as why the …

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