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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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High Voltage Bias Testing And Degradation Analysis Of Photovoltaic Modules, Vinaykumar Hadagali Jan 2005

High Voltage Bias Testing And Degradation Analysis Of Photovoltaic Modules, Vinaykumar Hadagali

Electronic Theses and Dissertations

This thesis mainly focuses on two important aspects of the photovoltaic modules. The first aspect addressed the high voltage bias testing and data and degradation analysis of high voltage biased thin film photovoltaic modules. The second aspect addressed the issues of reliability and durability of crystalline silicon module. Grid-connected photovoltaic systems must withstand high voltage bias in addition to harsh environmental conditions such as intermittent solar irradiance, high humidity, heat and wind. a-Si:H thin-film photovoltaic modules with earlier generation SnO2:F transparent conducting oxide (TCO) on the front glass installed on the FSEC High Voltage Test Bed were monitored since December …

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Application Of Statistical Methods In Risk And Reliability, Astrid Heard Jan 2005

Application Of Statistical Methods In Risk And Reliability, Astrid Heard

Electronic Theses and Dissertations

The dissertation considers construction of confidence intervals for a cumulative distribution function F(z) and its inverse at some fixed points z and u on the basis of an i.i.d. sample where the sample size is relatively small. The sample is modeled as having the flexible Generalized Gamma distribution with all three parameters being unknown. This approach can be viewed as an alternative to nonparametric techniques which do not specify distribution of X and lead to less efficient procedures. The confidence intervals are constructed by objective Bayesian methods and use the Jeffreys noninformative prior. Performance of the resulting confidence intervals is …

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Insulator-Insulator Contact Charging As A Function Of Pressure, Michael Hogue Jan 2005

Insulator-Insulator Contact Charging As A Function Of Pressure, Michael Hogue

Electronic Theses and Dissertations

Metal - metal and to an extent metal - insulator contact or triboelectric charging are well known phenomena with good theoretical understanding of the charge exchange mechanism. However, insulator – insulator charging is not as well understood. Theoretical and experimental research has been performed that shows that the surface charge on an insulator after triboelectric charging with another insulator is rapidly dissipated with lowered atmospheric pressure. This pressure discharge is consistent with surface ions being evaporated off the surface once their vapor pressure falls below the saturation vapor pressure. A two-phase equilibrium model based on an ideal gas of singly …

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The Integration Of Audio Into Multimodal Interfaces: Guidelines And Applications Of Integrating Speech, Earcons, Auditory Icons, And Spatial Audio (Seas), David Jones Jan 2005

The Integration Of Audio Into Multimodal Interfaces: Guidelines And Applications Of Integrating Speech, Earcons, Auditory Icons, And Spatial Audio (Seas), David Jones

Electronic Theses and Dissertations

The current research is directed at providing validated guidelines to direct the integration of audio into human-system interfaces. This work first discusses the utility of integrating audio to support multimodal human-information processing. Next, an auditory interactive computing paradigm utilizing Speech, Earcons, Auditory icons, and Spatial audio (SEAS) cues is proposed and guidelines for the integration of SEAS cues into multimodal systems are presented. Finally, the results of two studies are presented that evaluate the utility of using SEAS cues, developed following the proposed guidelines, in relieving perceptual and attention processing bottlenecks when conducting Unmanned Air Vehicle (UAV) control tasks. The …

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Messenger Rna Profiling: A Prototype Method For Body Fluidand Tissue Identification, Jane Juusola Jan 2005

Messenger Rna Profiling: A Prototype Method For Body Fluidand Tissue Identification, Jane Juusola

Electronic Theses and Dissertations

Conventional methods of body fluid identification use labor-intensive, technologically diverse techniques that are performed in a series, not parallel, manner and are costly in terms of time and sample. Furthermore, for some frequently encountered body fluids, such as saliva or vaginal secretions, no confirmatory technique exists. Terminally differentiated cells, such as blood lymphocytes or epithelial cells lining the oral cavity, have a unique pattern of gene expression, which is evinced by the presence and relative abundance of specific mRNA species. If the type and abundance of mRNAs can be determined in a stain or tissue sample recovered at the crime …

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Race, Socio-Economic Status, School Level-Resources, And Parental Influences On Fcat Scores In Florida: A Quantitative Study., Tara King Jan 2005

Race, Socio-Economic Status, School Level-Resources, And Parental Influences On Fcat Scores In Florida: A Quantitative Study., Tara King

Electronic Theses and Dissertations

There is an abundance of literature that focuses on the standardized test score difference between minority and non-minority students. Within this literature, socio-economic factors, parental influences, and school-level resources have been used to explain the difference in test scores. The purpose of this study is to identify the variables that are thought to significantly influence test score achievement. The data come from the Florida Department of Education and the US Census. Linear regression analyses results are used to examine the relationship between the independent and the dependent variables. The results showed that overall economic factors are more closely related to …

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Acculturation, Social Acceptance, And Adjustment Of Early Adolescents, Jenny Klein Jan 2005

Acculturation, Social Acceptance, And Adjustment Of Early Adolescents, Jenny Klein

Electronic Theses and Dissertations

A majority of research regarding disruptive behavior disorders in youth has focused primarily upon Caucasian children and adolescents. As a result, more investigation of the unique characteristics of youth from ethnically diverse backgrounds, particularly those from Hispanic American and African American backgrounds, is needed (Balls Organista, Organista, & Kurasaki, 2003). This study investigated the relationships between several characteristics (e.g., ethnic identity, socioeconomic status, social acceptance, and emotional and behavioral symptoms) of early adolescents belonging to diverse ethnic groups. Results suggested that socioeconomic status and degree of early adolescents' social acceptance were important factors in predicting the development of internalizing and …

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Investigating The Effects Of 3-D Spatialized Auditory Cues On The Development Of Situation Awareness For Teams, Laura Milham Jan 2005

Investigating The Effects Of 3-D Spatialized Auditory Cues On The Development Of Situation Awareness For Teams, Laura Milham

Electronic Theses and Dissertations

This dissertation investigated the effects of spatialized auditory cues on the development of situation awareness for teams. Based on extant research, it was hypothesized that 3-D spatialized auditory cues can be utilized by teams to develop knowledge about team member location in addition to supporting the usage of team behaviors for developing and maintaining situation awareness. Accordingly, the study examined how situation awareness would be differentially influenced by varying the type of auditory cues incorporated into virtual environment (VE) team training scenarios within the context of a MOUT team task. In general, the results of this study provided partial support …

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Selected School Characteristics And Their Relationshipto High School Teacher Retention, Jhunu Mohapatra Jan 2005

Selected School Characteristics And Their Relationshipto High School Teacher Retention, Jhunu Mohapatra

Electronic Theses and Dissertations

This study was conducted to examine the perceptions of Orange County high school teachers and administrators regarding selected school characteristics and their relationship to teacher retention. The study was based on another investigation conducted by the Charlotte Advocates of Education (2004) inquiring into the working conditions in schools and their impact on teacher retention. A total of 292 teachers with less than 4 years of experience and 14 administrators with more than 1 year of experience responded to 25 survey items related to the 6 factors comprising positive school characteristics. Factors such as School Facility, Resources, and Professional Development contributed …

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An Hedonomic Evaluation Of Pleasurable Human-Technology Experience: The Effect Of Exposure And Aesthetics On The Experience Of Flow, Lauren Murphy Jan 2005

An Hedonomic Evaluation Of Pleasurable Human-Technology Experience: The Effect Of Exposure And Aesthetics On The Experience Of Flow, Lauren Murphy

Electronic Theses and Dissertations

A framework was developed called the Extended Hedonomic Hierarchy (EHH) that provides a basis for evaluating pleasurable human-system experience. Results from a number of experiments within this framework that evaluated specific dimensions of the framework are reported. The 'Exposure' component of the EHH framework and hedonics of the system were investigated to see how changes would affect other dimensions, such as the occurrence of flow, the mode of interaction, and the needs of the user. Simulations and video games were used to investigate how repeated exposure affects flow, interaction mode, and the user needs. The Kansei Engineering method was used …

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Performance Support And Usability:An Experimental Study Ofelectronic Performance Support Interfaces, Charles Rawls Jan 2005

Performance Support And Usability:An Experimental Study Ofelectronic Performance Support Interfaces, Charles Rawls

Electronic Theses and Dissertations

This study evaluated the usability of two types of performance-support interfaces that were designed using informational and experiential approaches. The experiment sought to determine whether there is a relationship between usability and the informational and experiential approaches. The general population under study was undergraduate education major students from the University of Central Florida. From the general population of three educational technology instructor-led classes, 83 students were solicited to participate in the study by completing a class activity. From the general population, a total of 63 students participated in the study. By participating in the study, the students completed a task …

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Email Utilization By University Employees And Its Relationship To Job Satisfaction, Anthony Recascino Jan 2005

Email Utilization By University Employees And Its Relationship To Job Satisfaction, Anthony Recascino

Electronic Theses and Dissertations

The use of technology, such as electronic mail and the Internet, is becoming the norm in many workplaces. This is especially true in academic workplaces. The present study examined several issues related to electronic mail use and job satisfaction for employees within a higher education workplace. Results of the study found that administrative level employees both sent and received more email than non-administrative level staff. Job satisfaction was not found to be related to the amount of email sent or received. No difference in job satisfaction was found between employees at the main campus versus regional locations, nor was there …

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Rejection In The Job Selection Process: The Effects Of Information & Sensitivity, Clayton Yonce Jan 2005

Rejection In The Job Selection Process: The Effects Of Information & Sensitivity, Clayton Yonce

Electronic Theses and Dissertations

Most people will experience rejection in the job selection process. Rejection from job opportunities is often issued via a letter from a hiring manager. These letters elicit reactions from applicants who may, in turn, have less favorable self perceptions and less favorable perceptions of the organization from which the applicant was rejected. Numerous research articles have been published that deal with delivering notification of selection and/or rejection to applicants in the job selection process. However, relatively few use a realistic laboratory design to obtain results. This study examined the effects of sensitivity and information in notifications of rejection when applicants …

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Old And Homeless,A Second Look At Two Surveys, Brian Bigelow Jan 2005

Old And Homeless,A Second Look At Two Surveys, Brian Bigelow

Electronic Theses and Dissertations

This study investigated the comparison between the Rich et al (1995) study done in Tampa Bay, Fl and Burt et al (2001) national study. Rich et al conducted a study of elder homeless Americans and later, Burt et al conducted a replication study on a national level using a similar study. My secondary analysis of the data covered four aspects: Demographics between the two groups of respondents; current housing issues; current alcohol, drug and mental health issues; and finally homeless services being used by both homeless, formally homeless and never homeless respondents. This was all compared to those that were …

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Giant Magneto-Impedance Effect In Thin Film Layered Structures, Amruta Borge Jan 2005

Giant Magneto-Impedance Effect In Thin Film Layered Structures, Amruta Borge

Electronic Theses and Dissertations

Recently, the giant magneto impedance (GMI) effect has been studied extensively because of its potential applications in sensor elements. The focus of this thesis work is to explore different compositions and processing conditions for CoSiB and NiFe thin films to obtain the soft magnetic properties and to evaluate their potential use in GMI sensor applications. Prior to this study, an MH Looper was constructed, which was extremely important and provided the basic magnetic characterization of the many ferromagnetic thin films deposited during this work. The CoSiB films were co-sputter deposited in an ultra high vacuum chamber. Films with different relative …

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The Effects Of Integrating Technologyinto An 8th Grade Science Curriculum, Gregory Brunton Jan 2005

The Effects Of Integrating Technologyinto An 8th Grade Science Curriculum, Gregory Brunton

Electronic Theses and Dissertations

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 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 …

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La Conciencia Política Y Social De Luis Palés Matos: Otra Lectura De Su Poesía, Omar Carmona Sanchez Jan 2005

La Conciencia Política Y Social De Luis Palés Matos: Otra Lectura De Su Poesía, Omar Carmona Sanchez

Electronic Theses and Dissertations

Throughout the decades, poetry has served as a literary vehicle to express and emphasize the emotions of a person. It has provided the substantial drive for the developed and the structure of individuals dedicated to a cause. This is the case of the Puerto Rican poet Luis Pales Matos, a man that used this method to make known the racial differences he found in his country and to clear a way for the Island's independence. Palés Matos dedications have made him one of Puerto Rico most significant poets. His is the first poet in the Spanish language to dedicate part …

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Effects Of Integrating Writing Activities On Students' Attitudes And Achievement In Problem Solving: An Action Research Study, Kelly Culbert Jan 2005

Effects Of Integrating Writing Activities On Students' Attitudes And Achievement In Problem Solving: An Action Research Study, Kelly Culbert

Electronic Theses and Dissertations

This action research study investigated my practice of using writing activities in the mathematics classroom. The study was conducted to determine the effect of integrating writing with mathematics on students' achievement in, and attitudes towards problem solving, and the relationship between students' attitudes and their achievement in problem solving. The study was conducted over a six-week period. Students participated in daily problem solving activities. Data were collected using a problem solving themed writing rubric for evaluating student journal responses, anecdotal records, and using a pre- and posttest problem solving attitude inventory. In this study, students demonstrated overall increased mathematical knowledge, …

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An Investigation Of Student Success Between Associate Of Arts And Non Associate Of Arts Transfer Students, Leeann Davis Jan 2005

An Investigation Of Student Success Between Associate Of Arts And Non Associate Of Arts Transfer Students, Leeann Davis

Electronic Theses and Dissertations

This dissertation investigates the possible association between admission with an Associate of Arts (AA) degree or no-AA degree, gender, and ethnicity with graduation GPA, probation, and persistence of community college transfer students admitted to the University of Central Florida in the 2001-2002 academic year (N = 5283). The literature review found that the majority of studies related to transfer student success compared transfer students to native university students. Little evidence of an association between success rates of transfer students as compared to native university students was indicated in the literature. The literature also did not indicate an association between gender …

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The Effects Of Athletic Participation, Expectations About Counseling And Gender On Attitudes Toward Help Seeking Behaviors Among Community College Students, Jose Fernandez Jan 2005

The Effects Of Athletic Participation, Expectations About Counseling And Gender On Attitudes Toward Help Seeking Behaviors Among Community College Students, Jose Fernandez

Electronic Theses and Dissertations

Researchers have determined that college student-athletes are an underrepresented population when it comes to utilizing college counseling services. Traditional students have appeared for counseling services more so than student-athletes. The primary purpose of this study was to assess the relationships between attitudes toward help seeking behavior and (a) expectations about counseling, (b) athlete status, and (c) gender of respondent among community college students. The study included 195 students at a central Florida community college, 74 student-athletes and 121 non-athlete students. The participants were asked to convey their counseling expectations by completing the Expectations About Counseling-Brief Form. Respondents were also asked …

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Non-Silicon Microfabricated Nanostructured Chemical Sensors For Electric Nose Application, Jianwei Gong Jan 2005

Non-Silicon Microfabricated Nanostructured Chemical Sensors For Electric Nose Application, Jianwei Gong

Electronic Theses and Dissertations

A systematic investigation has been performed for "Electric Nose", a system that can identify gas samples and detect their concentrations by combining sensor array and data processing technologies. Non-silicon based microfabricatition has been developed for micro-electro-mechanical-system (MEMS) based gas sensors. Novel sensors have been designed, fabricated and tested. Nanocrystalline semiconductor metal oxide (SMO) materials include SnO2, WO3 and In2O3 have been studied for gas sensing applications. Different doping material such as copper, silver, platinum and indium are studied in order to achieve better selectivity for different targeting toxic gases including hydrogen, carbon monoxide, hydrogen sulfide etc. Fundamental issues like sensitivity, …

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Synthesis, Characterizations, And Evaluation Of New Reactive Two-Photon Absorbing Dyes For Two-Photon Excited Fluorescence Imaging Applications, Katherine J. Hales Jan 2005

Synthesis, Characterizations, And Evaluation Of New Reactive Two-Photon Absorbing Dyes For Two-Photon Excited Fluorescence Imaging Applications, Katherine J. Hales

Electronic Theses and Dissertations

Recent, cooperative advances in chemistry, biology, computing, photophysics, optics, and microelectronics have resulted in extraordinary developments in the biological sciences, resulting in the emergence of a novel area termed 'biophotonics'. The integrative and interdisciplinary nature of biophotonics cuts across virtually all disciplines, extending the frontiers of basic cellular, molecular, and biology research through the clinical and pharmaceutical industries. This holds true for the development and application of the novel imaging modality utilizing multiphoton absorption and its extraordinary contribution to recent advances in bioimaging. Intimately involved in the revolution of nonlinear bioimaging has been the development of optical probes for probing …

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Integrating Visual Thinking Strategies Into A Discipline Based Art Education Curriculum, Amanda Mcknight Jan 2005

Integrating Visual Thinking Strategies Into A Discipline Based Art Education Curriculum, Amanda Mcknight

Electronic Theses and Dissertations

No abstract provided.

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Coalition Formation In Multi-Agent Uav Systems, Paul Dejong Jan 2005

Coalition Formation In Multi-Agent Uav Systems, Paul Dejong

Electronic Theses and Dissertations

Coalitions are collections of agents that join together to solve a common problem that either cannot be solved individually or can be solved more efficiently as a group. Each individual agent has capabilities that can benefit the group when working together as a coalition. Typically, individual capabilities are joined together in an additive way when forming a coalition. This work will introduce a new operator that is used when combining capabilities, and suggest that the behavior of the operator is contextual, depending on the nature of the capability itself. This work considers six different capabilities of Unmanned Air Vehicles (UAV) …

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Effect Of Annealing On Copper Thin Films:The Classical Size Effect And Agglomeration, Parag Gadkari Jan 2005

Effect Of Annealing On Copper Thin Films:The Classical Size Effect And Agglomeration, Parag Gadkari

Electronic Theses and Dissertations

With continued shrinking of CMOS technology to reduce the gate delay times, an increase in the resistivity of the metal corresponding to the wire dimension is a concern. This phenomenon of increase in resistivity with decreasing dimension of the thin metallic film or interconnect is known as the "classical size effect". Various theories have been postulated to explain the phenomenon of classical size effect; these theories can be broadly classified as resistivity due to scattering arising from surface and grain boundaries. The total resistivity of metals depends on the electron scattering due to impurities, phonons, surfaces, grain boundaries, and other …

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Sounding Rocket Redesign And Optimization For Payload Expansion And In Flight Telemetry Transmittal, Matthew Huffman Jan 2005

Sounding Rocket Redesign And Optimization For Payload Expansion And In Flight Telemetry Transmittal, Matthew Huffman

Electronic Theses and Dissertations

Due to renewed interest in the sub orbital rocket program of the Florida Space Authority and a surplus of Super Loki Sounding Rockets, an effort to improve the usefulness of this surplus is herein undertaken. Currently, the capacity of the payload compartment in the upper stage of the Super Loki system is very limited. A redesign of the upper stage will allow larger and more versatile payloads to be carried, assuming the appropriate design parameters are met. It has therefore been undertaken to create a design procedure that is comprehensive in scope in order to affect this redesign. This procedure …

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Arc-Discharge In Solution: A Novel Synthesis Method For Carbon Nanotubes And In Situ Decoration Of Carbon Nanotubes With Nanoparticles, Debasis Bera Jan 2005

Arc-Discharge In Solution: A Novel Synthesis Method For Carbon Nanotubes And In Situ Decoration Of Carbon Nanotubes With Nanoparticles, Debasis Bera

Electronic Theses and Dissertations

Nanotechnology has reached the status of the 21st century's leading science and technology based on fundamental and applied research during the last two decades. An important feature of nanotechnology is to bridge the crucial dimensional gap between the atomic and molecular fundamental sciences and microstructural scale of engineering. Accordingly, it is very important to have an in-depth understanding of the synthesis of nanomaterials for the use of state-of-the-art high technological devices with enhanced properties. Recently, the 'bottom-up' approach for the fabrication of nanomaterials has received a great deal of attention for its simplicity and cost effectiveness. Tailoring the various parameters …

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A Framework To Model Complex Systems Via Distributed Simulation: A Case Study Of The Virtual Test Bed Simulation System Using The High Level Architecture, Jaebok Park Jan 2005

A Framework To Model Complex Systems Via Distributed Simulation: A Case Study Of The Virtual Test Bed Simulation System Using The High Level Architecture, Jaebok Park

Electronic Theses and Dissertations

As the size, complexity, and functionality of systems we need to model and simulate con-tinue to increase, benefits such as interoperability and reusability enabled by distributed discrete-event simulation are becoming extremely important in many disciplines, not only military but also many engineering disciplines such as distributed manufacturing, supply chain management, and enterprise engineering, etc. In this dissertation we propose a distributed simulation framework for the development of modeling and the simulation of complex systems. The framework is based on the interoperability of a simulation system enabled by distributed simulation and the gateways which enable Com-mercial Off-the-Shelf (COTS) simulation packages to …

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Implementation Strategies For Real-Time Traffic Safety Improvements On Urban Freeways, Jeremy Harvey Dilmore Jan 2005

Implementation Strategies For Real-Time Traffic Safety Improvements On Urban Freeways, Jeremy Harvey Dilmore

Electronic Theses and Dissertations

This research evaluates Intelligent Transportation System (ITS) implementation strategies to improve the safety of a freeway once a potential of a crash is detected. Among these strategies are Variable Speed Limit (VSL) and ramp metering. VSL are ITS devices that are commonly used to calm traffic in an attempt to relieve congestion and enhance throughput. With proper use, VSL can be more cost effective than adding more lanes. In addition to maximizing the capacity of a roadway, a different aspect of VSL can be realized by the potential of improving traffic safety. Through the use of multiple microscopic traffic simulations, …

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