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Effect Of Operator Control Configuration On Unmanned Aerial System Trainability, John Neumann Jan 2006

Effect Of Operator Control Configuration On Unmanned Aerial System Trainability, John Neumann

Electronic Theses and Dissertations

Unmanned aerial systems (UAS) carry no pilot on board, yet they still require live operators to handle critical functions such as mission planning and execution. Humans also interpret the sensor information provided by these platforms. This applies to all classes of unmanned aerial vehicles (UAV's), including the smaller portable systems used for gathering real-time reconnaissance during military operations in urban terrain. The need to quickly and reliably train soldiers to control small UAS operations demands that the human-system interface be intuitive and easy to master. In this study, participants completed a series of tests of spatial ability and were then …

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What Teachers Want To Know: A Systematic Review Of Action Research Theses Related To K-8 Mathematics And Science, Bridget Steele Jan 2006

What Teachers Want To Know: A Systematic Review Of Action Research Theses Related To K-8 Mathematics And Science, Bridget Steele

Electronic Theses and Dissertations

The research conducted was a systemic review of 88 action research masters theses from a teacher enhancement program for K-8 mathematics and science at the University of Central Florida and the teachers that performed the studies. The purpose of this study is to synthesize existing research results of a collection of master's theses from a teacher enhancement program for K-8 mathematics and science teachers in order to arrive at meaningful conclusions regarding teachers' research interests and classroom practices. Also, the study will help teacher educators who deliver the teacher enhancement program to improve the effectiveness of the program. A summary …

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A Study Of Millenial Students And Their Reactive Behavior Patterns In The Online Environment, Francisca Yonekura Jan 2006

A Study Of Millenial Students And Their Reactive Behavior Patterns In The Online Environment, Francisca Yonekura

Electronic Theses and Dissertations

The goal of this study was to identify patterns or characteristics unique to online millennial students in higher education from two perspectives: the generational traits for an understanding of millennial students as a cohort, and the Long reactive behavior patterns and traits for an understanding of millennials as individuals. Based on the identified patterns and characteristics of these millennial students, the researcher highlighted instructional and curricular implications for online learning. A profile depicting online millennial students based on the demographic data and their overall satisfaction levels with online learning is provided. For a holistic understanding, the study included an inquiry …

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Educational Vision In Florida School Districts: Vision Alignment And Leadership Style, Cindy Sikkenga Jan 2006

Educational Vision In Florida School Districts: Vision Alignment And Leadership Style, Cindy Sikkenga

Electronic Theses and Dissertations

The purpose of this study was to address a gap in the organizational leadership research related to the sharing, or alignment, of leadership vision across organizational levels, with a focus on educational vision alignment in Florida K-12 public school districts. The study also sought to determine to what extent, if any, there were differences among Florida school districts exhibiting different levels of educational vision alignment. The broad question addressed by the current research was this: To what degree are the educational visions of superintendents and principals aligned within Florida K-12 public school districts? The following research questions further guided the …

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Holy Books Or Pocket Books? Class And Values In American Politics, Matthew Keaton Jan 2006

Holy Books Or Pocket Books? Class And Values In American Politics, Matthew Keaton

Electronic Theses and Dissertations

There has been much speculation recently as to the political effect that "moral values" have on Americans and much research has shown inconclusive results as far as the effect of class. This paper aims to study how class and values, including moral values and postmaterialist values, interact with politics in the United States. The analyses performed to determine these effects include crosstabulation and logistical regressions and will include data from the National Election Studies (NES). It is found that postmaterialist values have little effect on political behavior but in separate analyses, class and moral values have increasing influences on vote …

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Development Of Theoretical And Computational Methods For Few-Body Processes In Ultracold Quantum Gases, Juan Blandon Jan 2006

Development Of Theoretical And Computational Methods For Few-Body Processes In Ultracold Quantum Gases, Juan Blandon

Electronic Theses and Dissertations

We are developing theoretical and computational methods to study two related three-body processes in ultracold quantum gases: three-body resonances and three-body recombination. Three-body recombination causes the ultracold gas to heat up and atoms to leave the trap where they are confined. Therefore, it is an undesirable effect in the process of forming ultracold quantum gases. Metastable three-body states (resonances) are formed in the ultracold gas. When decaying they also give additional kinetic energy to the gas, that leads to the heating too. In addition, a reliable method to obtain three-body resonances would be useful in a number of problems in …

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Raman Spectroscopy Of Glasseswith High And Broad Raman Gain In The Boson Peak Region, Yu Guo Jan 2006

Raman Spectroscopy Of Glasseswith High And Broad Raman Gain In The Boson Peak Region, Yu Guo

Electronic Theses and Dissertations

This thesis investigates Raman spectra of novel glasses and their correlation with structure for Raman gain applications. Raman gain for all-optical amplification by fibers depends significantly on the cross section for spontaneous Raman scattering allowing to compare signal strength and spectral coverage. We also investigate the relationship between glass structure and the Boson peak (enhancement of the low-frequency vibrational density of states) and report new inelastic neutron scattering spectra for niobium-phosphate glasses. Polarization resolved Raman spectra of glasses based on tellurite and phosphate formers have been measured from 6 – 1500 cm-1 using an excitation wavelength of 514 nm. The …

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The Taino Are Still Alive, Taino Cuan Yahabo: An Example Of The Social Construction Of Race And Ethnicity, David Cintron Jan 2006

The Taino Are Still Alive, Taino Cuan Yahabo: An Example Of The Social Construction Of Race And Ethnicity, David Cintron

Electronic Theses and Dissertations

Definitions and boundaries of race and ethnicity are socially constructed. They are malleable inventions created by the negotiation of ascribed ideas from outside groups and asserted notions from the inside group's membership. The revitalization of Taíno identity and culture within the Puerto Rican and related communities is a classic case example of this negotiation. Although objective conditions exist to recognize the descendants of these Caribbean aboriginals as an identifiable group, their identities are contested and sometimes ridiculed. Even though Taíno heritage is accepted as an essential root of Puerto Rico's cultural and biological make-up, this group has been classified as …

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Faculty Development In Member Institutions Of The Florida Faculty Development Consortium: Strategic Plans, Evaluation Models, Organization, And Funding, Laura Ross Jan 2006

Faculty Development In Member Institutions Of The Florida Faculty Development Consortium: Strategic Plans, Evaluation Models, Organization, And Funding, Laura Ross

Electronic Theses and Dissertations

The purpose of this study was to examine strategic plans and evaluation models in light of organizational structures and funding to determine if member institutions in the Florida Faculty Development Consortium were investing in faculty development based on strategic and measurable criteria. Data were gathered through a mixed method survey mailed electronically to the individuals responsible for faculty development at 31 member institutions of the Florida Faculty Development Consortium. Even though the Consortium was comprised of public and private four-year institutions and public two-year institutions, faculty development programs in these institutions had similarities. Most programs had strategic plans, centralized faculty …

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Preliminary Study On The Impact Of Impingement On The Effectiveness Of Film Cooling In The Presence Of Gas Path Pressure Gradient, Anil Peravali Jan 2006

Preliminary Study On The Impact Of Impingement On The Effectiveness Of Film Cooling In The Presence Of Gas Path Pressure Gradient, Anil Peravali

Electronic Theses and Dissertations

Impingement is the most commonly used method of cooling in the hot stages of gas turbines. This is often combined with film cooling to further increase the cooling performance. The mainstream flow where in the coolant films discharge often has large stream wise pressure variations. All existing studies on coupled film and impingement cooling concentrated on the effect of the film depletion on the impingement heat transfer. This study investigates the impact of impingement on film cooling, where the jets impinging on a flat plate are depleted through arrays of film cooling holes in the presence of pressure gradient in …

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Science Self-Efficacy In Tenth Grade Hispanic Female High School Students, Maria Miller Jan 2006

Science Self-Efficacy In Tenth Grade Hispanic Female High School Students, Maria Miller

Electronic Theses and Dissertations

Historical data have demonstrated an underrepresentation of females and minorities in science, technology, engineering, and mathematics (STEM) professions. The purpose of the study considered the variables of gender and ethnicity collectively in relationship to tenth grade Hispanic females' perception of their self-efficacy in science. The correlation of science self-efficacy to science academic achievement was also studied. Possible interventions for use with female Hispanic minority populations might help increase participation in STEM field preparation during the high school career. A population of 272 students was chosen through convenience sampling methods, including 80 Hispanic females. Students were administered a 27-item questionnaire taken …

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A Correlational Study About Coaching And Teachers' Attitudes, Perceptions, And Practices In Reading Instruction, Joan Conway Jan 2006

A Correlational Study About Coaching And Teachers' Attitudes, Perceptions, And Practices In Reading Instruction, Joan Conway

Electronic Theses and Dissertations

The purpose of this study was to explore elementary teachers' self-reporting of: a) work with a reading coach and b) attitudes, perceptions, and practices in teaching reading. The five point ratings and open-ended responses on the survey were the sources of data. Surveys were returned by 85% of teachers in five elementary schools in Collier County, Florida. Correlations of survey items were analyzed on the basis of the aggregated data and the following subgroups: certification, years of experience, school demographics, and grade levels. The survey in this study was excerpted and adapted from a survey, which was tested for validity …

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Public Religious Participation: A Comparison Of Three Distinct Birth Cohorts, Diane Prather Jan 2006

Public Religious Participation: A Comparison Of Three Distinct Birth Cohorts, Diane Prather

Electronic Theses and Dissertations

Research has demonstrated that many factors affect levels of religiosity in American religion. This study extends the research on the relationship between cohort membership and public religious participation and individual personal involvement. Most of the research pertaining to the effects of cohort on religiosity has been devoted to comparisons between the Depression Era and Baby Boom Cohorts. This study extends research in this area by including Generation X to the extent possible. Using the General Social Surveys, this analysis employs an age/period/cohort analytical framework to examine religious involvement. Sociodemographic variables that are associated with religiosity are included in the analysis. …

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The Paths To Becoming A Mathematics Teacher, Kimberly Lowry Jan 2006

The Paths To Becoming A Mathematics Teacher, Kimberly Lowry

Electronic Theses and Dissertations

Increasing numbers of mathematics teachers must be recruited in coming years, because of a growing student population, teacher attrition, calls for smaller class size, and the need to replace out-of-subject teachers. Recruitment can be made more effective and efficient, if better information on career paths is provided to decision makers. This study attempts to analyze the academic decisions which lead to the outcome "becoming a mathematics teacher". Four groups were compared and contrasted: mathematics teachers, science teachers, other teachers, and non-teachers. Science teachers were removed from the "other teachers" category because of their many similarities to mathematics teachers on the …

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A Three-Dimensional Bay/Estuary Model To Simulate Water Quality Transport, Jing Yu Jan 2006

A Three-Dimensional Bay/Estuary Model To Simulate Water Quality Transport, Jing Yu

Electronic Theses and Dissertations

This thesis presents the development of a numerical water quality model using a general paradigm of reaction-based approaches. In a reaction-based approach, all conceptualized biogeochemical processes are transformed into a reaction network. Through the decomposition of species governing equations via Gauss-Jordan column reduction of the reaction network, (1) redundant fast reactions and irrelevant kinetic reactions are removed from the system, which alleviates the problem of unnecessary and erroneous formulation and parameterization of these reactions, and (2) fast reactions and slow reactions are decoupled, which enables robust numerical integrations. The system of species transport equations is transformed to reaction-extent transport equations, …

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Modeling Inter-Plant Interactions, Jessica Larson Jan 2006

Modeling Inter-Plant Interactions, Jessica Larson

Electronic Theses and Dissertations

The purpose of this paper is to examine the interactions between two plant species endemic to Florida and develop a model for the growth of one of the plant species. An equation for the growth of Hypericum cumulicola is developed through analyzing how the distance to and the height of the nearest Ceratiola ericoides (Florida rosemary) affects the growth of Hypericum cumulicola. The hypericums were separated into five separate regions according to the distance to the nearest rosemary plant. The parameters for a basic growth equation were obtained in each of the five regions and compared to each other along …

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On The Use Of Variable Coherence In Inverse Scattering Problems, Erwan Baleine Jan 2006

On The Use Of Variable Coherence In Inverse Scattering Problems, Erwan Baleine

Electronic Theses and Dissertations

Even though most of the properties of optical fields, such as wavelength, polarization, wavefront curvature or angular spectrum, have been commonly manipulated in a variety of remote sensing procedures, controlling the degree of coherence of light did not find wide applications until recently. Since the emergence of optical coherence tomography, a growing number of scattering techniques have relied on temporal coherence gating which provides efficient target selectivity in a way achieved only by bulky short pulse measurements. The spatial counterpart of temporal coherence, however, has barely been exploited in sensing applications. This dissertation examines, in different scattering regimes, a variety …

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Driving Simulator Validation And Rear-End Crash Risk Analysis At A Signalised Intersection, Praveen Chilakapati Jan 2006

Driving Simulator Validation And Rear-End Crash Risk Analysis At A Signalised Intersection, Praveen Chilakapati

Electronic Theses and Dissertations

In recent years the use of advanced driving simulators has increased in the transportation engineering field especially in evaluating safety countermeasures. The driving simulator at UCF is a high fidelity simulator with six degrees of freedom. This research aims at validating the simulator in terms of speed and safety with the intention of using it as a test bed for high risk locations and to use it in developing traffic safety countermeasures. The Simulator replicates a real world signalized intersection (Alafaya trail (SR-434) and Colonial Drive (SR-50)). A total of sixty one subjects of age ranging from sixteen to sixty …

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The Relationship Between Academic And Student Affairs Collaboration And Student Success In Research Universities, Elizabeth Boggs Jan 2006

The Relationship Between Academic And Student Affairs Collaboration And Student Success In Research Universities, Elizabeth Boggs

Electronic Theses and Dissertations

This study investigated the relationships, if any, between the number, nature, and organization of partnerships between academic and student affairs and measures of institutional success and student learning. Specifically, this research sought to: (a) investigate the relationships between the number, nature, and organization of partnerships with institutional retention rates, graduation rates, and students' engagement in educationally purposeful activities, (b) test the feasibility of a classification system for the organization of partnerships developed by O'Halloran (2005), and (c) explore the alignment between reported goals for engaging in collaboration and the actual nature of existing partnerships. The population for the study consisted …

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Improving Parent Involvement For Culturally And Lingustically Diverse Parents Of Middle School Students With Disabilities From Urban Settings In Suburban Schools, Michelle Urquhart Jan 2006

Improving Parent Involvement For Culturally And Lingustically Diverse Parents Of Middle School Students With Disabilities From Urban Settings In Suburban Schools, Michelle Urquhart

Electronic Theses and Dissertations

This study was designed to address the need for improved collaborative experiences for culturally and linguistically diverse (CLD) parents of students with disabilities. Historically, these individuals have had limited interactions with special education services and professionals, particularly at the middle school level. To improve the collaborative relationship between CLD families and schools, the study offered collaborative training sessions designed to provide opportunities for parents to build on their current knowledge base and skills for effective partnerships with school personnel. The goal of the training was to increase the types and frequency of school involvement by CLD parents. The participants for …

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White Opinions Of United States Immigration: Testing Rival Hypotheses, 2004, Celeste Bulkley Jan 2006

White Opinions Of United States Immigration: Testing Rival Hypotheses, 2004, Celeste Bulkley

Electronic Theses and Dissertations

Few issues in the contemporary American political and social environments are as salient and emotionally charged as the debate over immigration. The thesis tests several competing hypotheses concerning the determinants of public opinion – among white respondents – on immigration issues. These include: the contextual considerations of southern residence and proximity to large numbers of Hispanic immigrants, as well as the individual-level factors of economic insecurity, political knowledge, national identity, group pride, and racism. Using data from the 2004 American National Election Study, the thesis provides a critical test of the competing hypotheses using multivariate analysis. Furthermore, conditional relationships are …

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Predictors Of Perceiving Racism In Ambiguous Situations, Teresa Marino Jan 2006

Predictors Of Perceiving Racism In Ambiguous Situations, Teresa Marino

Electronic Theses and Dissertations

The present study used a mixed-experimental analog design to examine 858 undergraduate students' reactions to a scenario depicting a store clerk being mildly rude to a customer. The ethnicity of the clerk and customer were manipulated. Results indicated that participants' beliefs regarding the general prevalence of racism and the degree to which they identify with their respective ethnic group significantly predicted the extent to which they perceived the clerk's behavior as being racially motivated. It also was found that participants' beliefs regarding the general prevalence of racism, levels of cynicism, and attributional style significantly predicted the extent to which they …

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Applications Of Linear And Nonlinear Optical Effects In Liquid Crystals, Hakob Sarkissian Jan 2006

Applications Of Linear And Nonlinear Optical Effects In Liquid Crystals, Hakob Sarkissian

Electronic Theses and Dissertations

Liquid crystals have been a major subject of research for the past decades. Aside from the variety of structures they can form, they exhibit a vast range of optical phenomena. Many of these phenomena found applications in technology and became an essential part of it. In this dissertation thesis we continue the line to propose a number of new applications of optical effects in liquid crystals and develop their theoretical framework. One such application is the possibility of beam combining using Orientational Stimulated Scattering in a nematic liquid crystal cell. Our numerical study of the OSS process shows that normally …

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Leadership Orientations Of Senior Administrators At American Metropolitan Universities, Diane Trees Jan 2006

Leadership Orientations Of Senior Administrators At American Metropolitan Universities, Diane Trees

Electronic Theses and Dissertations

Universities in the United States continue to evolve far beyond traditional concepts. While problems of an academic, economic, governmental, and educational nature beset any university, the metropolitan institution must grapple with these issues not as an individual entity but as a partner in a group of many players. Educational leadership for the American metropolitan university necessitates distinct and unique skills. This study sought to explore leadership behaviors of senior administrators at American metropolitan universities as conceptualized by Bolman and Deal's Four-Frame Model of Leadership (1991). Using Bolman and Deal's (1990) Leadership Orientations Survey (Self) instrument with an additional Respondent Information …

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A Fluid Structure Interaction Model Of Intracoronary Atherosclerotic Plaque Rupture, Eric Teuma-Melago Jan 2006

A Fluid Structure Interaction Model Of Intracoronary Atherosclerotic Plaque Rupture, Eric Teuma-Melago

Electronic Theses and Dissertations

Plaque rupture with superimposed thrombosis is the primary cause of acute coronary syndromes of unstable angina, myocardial infarction and sudden death. Although intensive studies in the past decade have shed light on the mechanism that causes unstable atheroma, none has directly addressed the clinical observation that most myocardial infarction (MI) patients have moderate stenoses (less than 50%). Considering the important role the arterial wall compliance and pulsitile blood flow play in atheroma rupture, fluid-structure interaction (FSI) phenomenon has been of interest in recent studies. In this thesis, the impact is investigated numerically of coupled blood flow and structural dynamics on …

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The Relationship Between Self-Reported Chronic Stress And Divided Attention Performance, Diane Petrac Jan 2006

The Relationship Between Self-Reported Chronic Stress And Divided Attention Performance, Diane Petrac

Electronic Theses and Dissertations

While previous research has extensively examined the effect of acute stress on cognitive performance, relatively little research has explored the relationship between chronic stress and cognitive performance. The current study aimed to control for current state anxiety to better isolate more chronic stress, when examining the relationship with performance on divided attention tasks. Fifty-four university undergraduates, who self-reported a wide range of perceived chronic stress (10-item Perceived Stress Scale), completed the Trail-Making Test and a dual (auditory and visual) Continuous Performance Test (CPT). Hierarchical regressions were performed to explore cognitive predictors of chronic perceived stress. After covarying for state anxiety …

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New Developments On High-Resolution Luminescence Spectroscopy And Their Application To The Direct Analysis Of Organic Pollutants, Shenjiang Yu Jan 2006

New Developments On High-Resolution Luminescence Spectroscopy And Their Application To The Direct Analysis Of Organic Pollutants, Shenjiang Yu

Electronic Theses and Dissertations

Polycyclic aromatic compounds (PACs), which comprise a complex class of condensed multi-ring benzenoid compounds, are important environmental pollutants originating from a wide variety of natural and anthropogenic sources. PACs are generally formed during incomplete combustion of pyrolisis of organic matter containing carbon and hydrogen. Because combustion of organic materials is involved in countless natural processes or human activities, PACs are omnipresent and abundant pollutants in air, soil, and water. Chemical analysis of PACs is of great environmental and toxicological importance. Many of them are highly suspect as etiological agents in human cancer. Because PACs carcinogenic properties strongly depend on molecular …

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Image-Based Material Editing, Erum Khan Jan 2006

Image-Based Material Editing, Erum Khan

Electronic Theses and Dissertations

Photo editing software allows digital images to be blurred, warped or re-colored at the touch of a button. However, it is not currently possible to change the material appearance of an object except by painstakingly painting over the appropriate pixels. Here we present a set of methods for automatically replacing one material with another, completely different material, starting with only a single high dynamic range image, and an alpha matte specifying the object. Our approach exploits the fact that human vision is surprisingly tolerant of certain (sometimes enormous) physical inaccuracies. Thus, it may be possible to produce a visually compelling …

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Decoherence In Quantum Dot Charge Qubits: The Role Of Electromagnetic Fluctuations, James Mccracken Jan 2006

Decoherence In Quantum Dot Charge Qubits: The Role Of Electromagnetic Fluctuations, James Mccracken

Electronic Theses and Dissertations

Lateral semiconductor quantum dot structures have been proposed as an effective quantum bit (qubit) for quantum computation. A single excess electron with the freedom to move between two capacitively coupled quantum dots creates a `pseudo'-spin system with the same qubit behavior as the more natural two level system of a single electron spin. The excess electron in the double dot system is restricted to one of the two dots, thereby creating two separate and distinct states (usually referred to as |L> and |R>). The benefit of these charge qubits lie in the relative ease with which they can be …

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An Evaluation Of The Effects Of A Leisure Education Curriculum On Deliquents' Motivation, Knowledge, And Behavior Changes Related To Boredom, Paul Finn Jr. Jan 2006

An Evaluation Of The Effects Of A Leisure Education Curriculum On Deliquents' Motivation, Knowledge, And Behavior Changes Related To Boredom, Paul Finn Jr.

Electronic Theses and Dissertations

Adolescents today have more unsupervised and unstructured free time than ever before. Poor decisions by youth during periods of free time may lead to substance abuse, teen pregnancy and juvenile delinquency. The highest frequency of juvenile crime, a major social problem, occurs during the 2-4 hours following the end of the school day. Research has demonstrated the benefits of engaging adolecents in prosocial leisure activity. However, no research has studied the issues of free time and leisure education with a delinquent population. This paper documents the impact of a leisure education curriculum on a population of delinquent youth in a …

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