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2005

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Evaluating Teacher Performance In Higher Education:The Value Of Student Ratings, Judith Prugh Campbell Jan 2005

Evaluating Teacher Performance In Higher Education:The Value Of Student Ratings, Judith Prugh Campbell

Electronic Theses and Dissertations

The purposes of this research were to: (a) assess community college students' perceptions of the student evaluation practice; (b) assess community college faculty members' responses to student evaluations of teachers and the extent to which instructional modifications resulted from student ratings; and (c) assess community college administrators' responses to student evaluations of teachers, the extent student ratings influenced administrators' evaluations of faculty, and how the results from student ratings were used to promote instructional effectiveness. A total of 358 students, faculty, and administrators from 5 Florida community colleges contributed their opinions on the value of the practice of student evaluation …

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The Effects Of A Responsibility-Based Character Education Program On Middle School Academic Achievement And School Climate At An International School In East Africa, Terry Allen Howard Jan 2005

The Effects Of A Responsibility-Based Character Education Program On Middle School Academic Achievement And School Climate At An International School In East Africa, Terry Allen Howard

Electronic Theses and Dissertations

The purpose of this research was to determine the effectiveness of a character education program on middle school student academic performance, effort and attitude about their school located in an international setting. Middle school students at the participating international school were assigned to either an experimental or control group. Those students in the experimental group classes received a series of 12 lessons focusing on the character trait of responsibility. Those students in the control group classes did not receive these lessons. Twelve responsibility-based lessons were presented to students in the experimental group. Student academic grades in six different academic subjects, …

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Addressing The Impact That Workshop Site Coordinators And Administrators Have On The Teaching Of Science In The Classroom, Valerie Elaine Mckenna Jan 2005

Addressing The Impact That Workshop Site Coordinators And Administrators Have On The Teaching Of Science In The Classroom, Valerie Elaine Mckenna

Electronic Theses and Dissertations

This dissertation studied the beliefs and practices of principals, workshop site coordinators, and science support personnel in two Central Florida school districts and compared those beliefs and practices to the literature on effective science in-service education. It is important to understand these beliefs and practices because they directly affect the content and pedagogical knowledge of classroom teachers, yet this aspect of instructional practices has been ignored in the science education literature. This study used a grounded theory methodology using open-ended individual interviews, participants observation, and documented analysis. Constant comparisons were built through analyzing the data. The research shows that in-service …

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The Salzburgers' "City On A Hill": The Failure Of A Pietist Vision In Ebenezer, Georgia, 1734-1774, Ashley Elizabeth Moreshead Jan 2005

The Salzburgers' "City On A Hill": The Failure Of A Pietist Vision In Ebenezer, Georgia, 1734-1774, Ashley Elizabeth Moreshead

Electronic Theses and Dissertations

A group of Protestant refugees from Salzburg founded the town of Ebenezer, Georgia, in 1734. The Pietists at the Francke Foundation in Halle sent two pastors, Johann Martin Boltzius and Israel Christian Gronau, to lead the religious immigrants in their new settlement. As other historians have shown, the Halle sponsors wanted Ebenezer to fulfill their own purposes: establish social and religious autonomy under British colonial rule, reproduce the economic structure and institutions of social and religious reform of the Francke Foundation, and establish a successful Pietist ministry in North America. This study examines journals and correspondence from Ebenezer's pastors, British …

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Reading Motivation In Upper Elementary Students: How Children Explain Reading For Pleasure, Rebecca Lynn Poppe Jan 2005

Reading Motivation In Upper Elementary Students: How Children Explain Reading For Pleasure, Rebecca Lynn Poppe

Electronic Theses and Dissertations

This qualitative study investigated the phenomenon of the pleasure reading experience in fourth and fifth grade students. The purpose of the study was to create a dialogue with children regarding their leisure reading habits in an effort to inform our understanding of aliteracy, a term that refers to having the ability to read but choosing not to. Fourth grade students were surveyed to uncover their attitudes toward pleasure reading and eleven students were chosen for interviews. Comparative data was obtained from those students who conveyed either extremely negative or extremely positive attitudes toward reading. Students of both genders were selected …

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Explanations In Contextual Graphs: A Solution To Accountability In Knowledge Based Systems, Brian W. Sherwell Jan 2005

Explanations In Contextual Graphs: A Solution To Accountability In Knowledge Based Systems, Brian W. Sherwell

Electronic Theses and Dissertations

In order for intelligent systems to be a viable and utilized tool, a user must be able to understand how the system comes to a decision. Without understanding how the system arrived at an answer, a user will be less likely to trust its decision. One way to increase a user's understanding of how the system functions is by employing explanations to account for the output produced. There have been attempts to explain intelligent systems over the past three decades. However, each attempt has had shortcomings that separated the logic used to produce the output and that used to produce …

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Constructing Educational Criticism Of Online Courses: A Model For Implementation By Practitioners, Kelvin Thompson Jan 2005

Constructing Educational Criticism Of Online Courses: A Model For Implementation By Practitioners, Kelvin Thompson

Electronic Theses and Dissertations

Online courses are complex, human-driven contexts for formal learning. Little has been said about the environment emerging from the interaction of instructor(s), learners, and other resources in such courses. Theories that focus on instructional settings and methods that are designed to accommodate inquiry into complex phenomena are essential to the systematic study of online courses. Such a line of research is necessary as the basis for a common language with which we can begin to speak holistically about online courses. In this dissertation, I attempt to generate better questions about the nature of online instructional environments. By combining prior works …

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Social Competence Of High School Students Enrolled In Online Physical Education Courses, Deborah M. Ware Jan 2005

Social Competence Of High School Students Enrolled In Online Physical Education Courses, Deborah M. Ware

Electronic Theses and Dissertations

The purpose of this study was to assess the social competence of high school students enrolled in online Physical Education courses. Additionally, the demographic information regarding students who enroll in online Physical Education courses was examined. The subjects for this study included sixty students taking one of two Physical Education courses at the Florida Virtual School during the spring 2005 term. The entire curriculum of the Florida Virtual School is presented online and students live throughout the entire state of Florida. Therefore, the entire study was administered online. The assessment instrument used was the Teenage Inventory of Social Skills created …

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Network Intrusion Detection: Monitoring, Simulation And Visualization, Mian Zhou Jan 2005

Network Intrusion Detection: Monitoring, Simulation And Visualization, Mian Zhou

Electronic Theses and Dissertations

This dissertation presents our work on network intrusion detection and intrusion sim- ulation. The work in intrusion detection consists of two different network anomaly-based approaches. The work in intrusion simulation introduces a model using explicit traffic gen- eration for the packet level traffic simulation. The process of anomaly detection is to first build profiles for the normal network activity and then mark any events or activities that deviate from the normal profiles as suspicious. Based on the different schemes of creating the normal activity profiles, we introduce two approaches for intrusion detection. The first one is a frequency-based approach which …

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Perceived Stress, Coping, And Adequacy Of Social Support: Implications For Subjective Well-Being In College Students, Kia Asberg Jan 2005

Perceived Stress, Coping, And Adequacy Of Social Support: Implications For Subjective Well-Being In College Students, Kia Asberg

Electronic Theses and Dissertations

Stress is a widespread concept commonly associated with psychological and medical problems that may impair an individual's functioning and incur costs on society. Alarming rates of depression, anxiety, suicidal ideation, and other stress-related problems have been found among college students. This study (N = 241)argues that reducing emotional and financial stress-related costs may be possible through increasing public and professional awareness of moderating variables, such as social support and coping resources. Results indicated that stress, inadequate social support, and escape-avoidance coping were related to higher levels of depression and lower life satisfaction in both males and females. Social support functioned …

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Development And Validation Of The Beile Test Of Information Literacy For Education (B-Tiled), Penny Beile O'Neil Jan 2005

Development And Validation Of The Beile Test Of Information Literacy For Education (B-Tiled), Penny Beile O'Neil

Electronic Theses and Dissertations

Few constituencies exist where it is more important to produce information literate individuals than teacher candidates, yet rarely is it suggested that practitioners entering the field are adequately prepared to teach and model information literacy to their students. As a result, information literacy has been established as a key outcome by a number of teacher education accrediting bodies and professional associations. Corollary to this initiative is the effort to develop valid instruments that assess information literacy skills. Yet, at the time of this dissertation, no rigorously reviewed instruments were uncovered that measure the information literacy skills levels of teacher candidates. …

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Modeling Satellite Formations In The Presence Of Perturbations, Robert Cannaday Jan 2005

Modeling Satellite Formations In The Presence Of Perturbations, Robert Cannaday

Electronic Theses and Dissertations

The potential benefits of autonomous satellite formation flying in such areas as high- resolution remote sensing, and sparse aperture radar, has stimulated interest in modeling the satellite environment for feasibility and simulation studies to help explore and define the technical challenges that must be solved in order to achieve successful autonomous satellite formations. The purpose of this paper is to develop and describe a numerical simulation of the orbital environment including central force field perturbations and atmospheric drag effects which will be a useful analytical tool for investigating issues relating to maintaining satellite formations in low-earth-orbit. Many of the studies …

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Evaluating Ramp Metering And Variable Speed Limits To Reduce Crash Potential On Congested Freeways Using Micro-Simulation, Albinder Dhindsa Jan 2005

Evaluating Ramp Metering And Variable Speed Limits To Reduce Crash Potential On Congested Freeways Using Micro-Simulation, Albinder Dhindsa

Electronic Theses and Dissertations

Recent research at UCF into defining surrogate measures for identifying crash prone conditions on freeways has led to the introduction of several statistical models which can flag such conditions with a good degree of accuracy. Outputs from these models have the potential to be used as real-time safety measures on freeways. They may also act as the basis for the evaluation of several intervention strategies that might help in the mitigation of risk of crashes. Ramp Metering and Variable Speed Limits are two approaches which have the potential of becoming effective implementation strategies for improving the safety conditions on congested …

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Relationship Between Adolescent Behavior And Civic Engagement, Michael Ernst Jan 2005

Relationship Between Adolescent Behavior And Civic Engagement, Michael Ernst

Electronic Theses and Dissertations

Citizenship - commitment to and participation in a political community - is the heart of constitutional democracy and a free society. Knowledge of the rights, responsibilities, and privileges are the electrical impulses that keep a steady beat. Without the participation of educated citizens, a democratic republic can not and does not function. This study analyzed the relationship between adolescent behavior and civic engagement. This task was accomplished by examining the amount of civic knowledge possessed by two groups within a population. The population examined, a high school in Flagler County, was composed of "at risk" students (those who had an …

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An Inverse Algorithm To Estimate Thermal Contact Resistance, Jennifer Gill Jan 2005

An Inverse Algorithm To Estimate Thermal Contact Resistance, Jennifer Gill

Electronic Theses and Dissertations

Thermal systems often feature composite regions that are mechanically mated. In general, there exists a significant temperature drop across the interface between such regions which may be composed of similar or different materials. The parameter characterizing this temperature drop is the thermal contact resistance, which is defined as the ratio of the temperature drop to the heat flux normal to the interface. The thermal contact resistance is due to roughness effects between mating surfaces which cause certain regions of the mating surfaces to loose contact thereby creating gaps. In these gap regions, the principal modes of heat transfer are conduction …

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Optical Wave Propagation In Discrete Waveguide Arrays, Jared Hudock Jan 2005

Optical Wave Propagation In Discrete Waveguide Arrays, Jared Hudock

Electronic Theses and Dissertations

The propagation dynamics of light in optical waveguide arrays is characteristic of that encountered in discrete systems. As a result, it is possible to engineer the diffraction properties of such structures, which leads to the ability to control the flow of light in ways that are impossible in continuous media. In this work, a detailed theoretical investigation of both linear and nonlinear optical wave propagation in one- and two-dimensional waveguide lattices is presented. The ability to completely overcome the effects of discrete diffraction through the mutual trapping of two orthogonally polarized coherent beams interacting in Kerr nonlinear arrays of birefringent …

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Employee Motivation: A Comparison Of Tipped And Non-Tipped Hourly Restaurant Employees, Catherine Johnson Jan 2005

Employee Motivation: A Comparison Of Tipped And Non-Tipped Hourly Restaurant Employees, Catherine Johnson

Electronic Theses and Dissertations

Employee motivation shall be defined by Robbins (as cited in Ramlall, 2004) as: "the willingness to exert high levels of effort toward organizational goals, conditioned by the effort's ability to satisfy some individual need." To engage in the practice of motivating employees, employers must understand the unsatisfied needs of each of the employee groups. This study desires to provide practitioners in the restaurant industry the ability to recognize motivators for these different employment groups and their relationship to organizational commitment. The restaurant industry consists of two types of employees: salaried and hourly. This study focuses on hourly employees, and their …

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The Sputnik Crisis And America's Response, Ian Kennedy Jan 2005

The Sputnik Crisis And America's Response, Ian Kennedy

Electronic Theses and Dissertations

On 4 October 1957, the Soviet Union launched Sputnik, the world's first artificial satellite, and the Space Age had arrived. While not an American achievement, Sputnik stands as a significant juncture in United States history. This thesis explores the resulting American political crisis, its development in the final three months of 1957, and the impact Sputnik had on American life. The thesis also examines the social and political context of the Sputnik crisis and will challenge some long-standing analysis of how America's reaction to the Soviet satellite developed. To accomplish this task, it was necessary to consult both primary and …

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Micromachined Electrochemical Sensors For Hydrogen Peroxide And Chlorine Detection, Anjum Mehta Jan 2005

Micromachined Electrochemical Sensors For Hydrogen Peroxide And Chlorine Detection, Anjum Mehta

Electronic Theses and Dissertations

Hydrogen peroxide and chlorine detection is critical for many biological and environmental applications. Hydrogen peroxide plays important roles in a variety of fields including plant physiology, medical, environmental and biochemical applications. Its role in plant defense and signal transduction, diseases such as Parkinson's and Alzhemier's, industrial processes such as disinfection and wastewater treatment and biochemical enzymatic reactions is critical. Given the gamut of areas that hydrogen peroxide is a key component of; its detection assumes great importance. Similarly chlorine has long been used as a disinfectant for making drinking water safe, but excessive chlorination is an environmental and health hazard …

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Resource Allocation Using Touch And Audition, David Mortimer Jan 2005

Resource Allocation Using Touch And Audition, David Mortimer

Electronic Theses and Dissertations

When people multi-task with inputs that demand attention, processing, andencoding, sensory interference is possible at almost any level. Multiple Resource Theory (MRT) suggests that such interference may be avoided by drawing from separate pools of resources available when using different sensory channels, memory processes, and even different response modes. Thus, there should be advantages in dividing tasks among different sensory channels to tap independent pools of attentional resources. For example, people are better with two tasks using the eye and ear, than when using two auditory or two visual inputs. The majority of the research on MRT involves visual to …

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Structural Evolution In Mechanically Alloyed Fe-Based Powder Systems, Umesh Patil Jan 2005

Structural Evolution In Mechanically Alloyed Fe-Based Powder Systems, Umesh Patil

Electronic Theses and Dissertations

A systematic study of iron-based binary and multi-component alloys was undertaken to study the structural evolution in these powders as a function of milling time during mechanical alloying. Blended elemental powders of Fe100-XBX (where x = 5, 10, 17, 20, 22, 25, 37.5 and 50 at. %) and a bulk metallic glass (BMG) composition (Fe60Co8Zr10Mo5W2B15) were subjected to mechanical alloying in a SPEX 8000 mixer mill. X-ray diffraction technique was employed to study the phase evolution, crystallite size, lattice strain and also to determine the crystal structure(s) of the phases. Depending on the milling time, formation of supersaturated solid solutions, …

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High Gain / Broadband Oxide Glasses For Next Generation Raman Amplifiers, Clara Rivero Jan 2005

High Gain / Broadband Oxide Glasses For Next Generation Raman Amplifiers, Clara Rivero

Electronic Theses and Dissertations

Interest in Raman amplification has undergone a revival due to the rapidly increasing bandwidth requirements for communications transmission, both for long haul and local area networks, and recent developments in the telecom fiber industry and diode laser technology. In contrast to rare earth doped fiber amplifiers, for which the range of wavelengths is fixed and limited, Raman gain bandwidths are larger and the operating wavelength is fixed only by the pump wavelength and the bandwidth of the Raman active medium. In this context, glasses are the material of choice for this application due to their relatively broad spectral response, and …

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The Use And Development Of Laser Microdissection To Separate Spermatozoa From Epithelial Cells For Str Analysis, Christine Sanders Jan 2005

The Use And Development Of Laser Microdissection To Separate Spermatozoa From Epithelial Cells For Str Analysis, Christine Sanders

Electronic Theses and Dissertations

Short Tandem Repeat (STR) analysis has become a valuable tool in identifying the source of biological stains, particularly from the investigation of sexual assault crimes. Difficulties in analysis arise primarily in the interpretation of mixed genotypes when cell separation of the sexual assailant's sperm from the victim's cells is incomplete. The forensic community continues to seek improvements in cell separation methods from mixtures for DNA typing. This report describes the use of laser microdissection (LMD) for the separation of pure populations of spermatozoa from two-donor cell mixtures. In this study, cell separation was demonstrated by microscopic identification of histologically stained …

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An Action Research Study Involving Fifth-Grade Students Learning Fractions Through A Situative Perspective With Story Problems, Colleen Allen Jan 2005

An Action Research Study Involving Fifth-Grade Students Learning Fractions Through A Situative Perspective With Story Problems, Colleen Allen

Electronic Theses and Dissertations

The purpose of this action research study was to investigate the affects of teaching through a situative perspective with story problems on students' understanding of fraction concepts and operations in my fifth-grade mathematics classroom. Students participated in twelve weeks of instruction. Data was collected in the form of pre and post tests, audiotaped and videotaped recordings of instructional sessions, and student work samples. Data analysis revealed that my students constructed their own knowledge about various fraction concepts and operations because students engaged in discussions, after solving story problems, that developed, extended and restructured their knowledge. One example of this occurred …

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Coherence Properties Of Optical Near-Fields, Adela Apostol Jan 2005

Coherence Properties Of Optical Near-Fields, Adela Apostol

Electronic Theses and Dissertations

Next generation photonics-based technologies will ultimately rely on novel materials and devices. For this purpose, phenomena at subwavelength scales are being studied to advance both fundamental knowledge and experimental capabilities. In this dissertation, concepts specific to near-field optics and experimental capabilities specific to near-field microscopy are used to investigate various aspects of the statistical properties of random electromagnetic fields in the vicinity of optically inhomogeneous media which emit or scatter radiation. The properties of such fields are being characterized within the frame of the coherence theory. While successful in describing the far-field properties of optical fields, the fundamental results of …

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Latinate Word Parts And Vocabulary:Contrasts Among Three Groups Comprisingthe Community College Preparatory Reading Class, Tom Bellomo Jan 2005

Latinate Word Parts And Vocabulary:Contrasts Among Three Groups Comprisingthe Community College Preparatory Reading Class, Tom Bellomo

Electronic Theses and Dissertations

Students enrolled in a college preparatory reading class at one particular community college were categorized based on language origin. Native English speaking students comprised one group and foreign students formed two additional groups--students whose language origin was Latin-based (i.e. Romance languages) and students whose language origin was not Latin-based (i.e. Japanese). A pretest assessment measure was used to quantify the extent that pre-existing knowledge of Latinate word parts and morphologically complex vocabulary differed among groups based on language origin. The identical instrument served as a posttest to measure the extent that direct instruction in morphological analysis resulted in change among …

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A Comparison Of Character Education Programs And Their Effects On Academic Achievement, Behavior, And Attendance, Beth Berger Jan 2005

A Comparison Of Character Education Programs And Their Effects On Academic Achievement, Behavior, And Attendance, Beth Berger

Electronic Theses and Dissertations

The purpose of this study was to determine whether significant relationships existed between character education and the number of incidents of crimes and violence, attendance rates, and academic achievement in Florida public schools. Proponents of character education such as Lickona (1991) and Murphy (1998) posited that there was a positive correlation between teaching and practicing the six pillars of character education, and student achievement, and increased attendance. They also posited that there was a negative correlation between character education and incidents of crime and violence. The researcher acquired data in an attempt to determine whether or not the views of …

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The Relationship Between Teacher Attitudes Toward Florida History And The Methods And Materials The Teachers Use To Teach Florida History, Elizabeth Dewey Jan 2005

The Relationship Between Teacher Attitudes Toward Florida History And The Methods And Materials The Teachers Use To Teach Florida History, Elizabeth Dewey

Electronic Theses and Dissertations

Reacting to an impression that history is not viewed as significant as other curricular subjects such as reading, math, or science, there were multiple purposes for this research: first, to document the attitudes of the fourth grade teachers in one county in Florida towards the subject of Florida history. The teachers' perceptions of the importance of the topic to and for the students, to the administration, and to them personally was surveyed in addition to the perceived preparation of the teachers to teach Florida History. The second purpose was to ascertain the perception of fourth grade teachers regarding preference and …

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Vibrotactile Guidance Cues For Target Identification, Joshua Downs Jan 2005

Vibrotactile Guidance Cues For Target Identification, Joshua Downs

Electronic Theses and Dissertations

The purpose of this dissertation was to establish how vibrotactile guidance cues can be used to improve marksmanship. This work originated in an effort to provide covert communication, navigation, and weapon aiming cues for infantrymen. It is predominantly an application-driven investigation rather than driven a priori by specific theoretical predictions from models of human performance. Three experiments are presented. Experiment 1 established the affect on initial response to vibrotactile guidance cues of tactor placements on the palmer versus dorsal surface of the hand, and targets appearing left versus right of center. Results suggest that tactile cues provided on the left …

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Liquid Crystal Materials And Tunable Devices For Optical Communications, Fang Du Jan 2005

Liquid Crystal Materials And Tunable Devices For Optical Communications, Fang Du

Electronic Theses and Dissertations

In this dissertation, liquid crystal materials and devices are investigated in meeting the challenges for photonics and communications applications. The first part deals with polymer-stabilized liquid crystal (PSLC) materials and devices. Three polymer-stabilized liquid crystal systems are developed for optical communications. The second part reports the experimental investigation of a novel liquid-crystal-infiltrated photonic crystal fiber (PCF) and explores its applications in fiber-optic communications. The curing temperature is found to have significant effects on the PSLC performance. The electro-optic properties of nematic polymer network liquid crystal (PNLC) at different curing temperatures are investigated experimentally. At high curing temperature, a high contrast, …

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