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Challenging A Traditional Social Norm In A Second Grade Mathematics Classroom, Lisa Egendoerfer Jan 2006

Challenging A Traditional Social Norm In A Second Grade Mathematics Classroom, Lisa Egendoerfer

Electronic Theses and Dissertations

In an attempt to examine classroom dialogue within a second grade classroom, I encouraged students to participate in mathematics discussions without needing to raise their hands before speaking. I challenged this traditional social norm and established sociomathematical norms as the study progressed. My study showed the effects of this change on the dialogue of students in my classroom. Focus was placed on the participation in classroom discussions when traditional social and sociomathematical norms were in place as well as when new norms were established. The study helped determine the effects of student-centered dialogue on conceptual understanding as demonstrated in the …

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Metacognitive Self-Regulation, Self-Efficacy For Learning And Performance, And Critical Thinking As Predictors Of Academic Succe, Edie Gaythwaite Jan 2006

Metacognitive Self-Regulation, Self-Efficacy For Learning And Performance, And Critical Thinking As Predictors Of Academic Succe, Edie Gaythwaite

Electronic Theses and Dissertations

The purpose of the study was to investigate whether metacognitive self-regulation, self-efficacy for learning and performance, and critical thinking could be identified as predictors of student academic success and course retention among community college students enrolled in online, telecourses, and traditional Fundamentals of Speech (public speaking) courses. The study was conducted during the Fall 2005 semester at Valencia Community College (VCC). Data for this study were collected from participating students enrolled in either one of the two online, two telecourse, and two traditional face-to-face public speaking courses chosen for analysis. Fifty-seven participants answered Pintrich, Smith, Garcia, and McKeachie (1991) Motivated …

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An Investigation Of Principals' Attitudes Toward The Knowledge And Use Of Learning Styles In Therapeutic Settings, Renee Pancoast Jan 2006

An Investigation Of Principals' Attitudes Toward The Knowledge And Use Of Learning Styles In Therapeutic Settings, Renee Pancoast

Electronic Theses and Dissertations

In March, 2006 the Principal's Attitudes Toward the Knowledge, Value, and Application of Learning Styles with Students in Therapeutic Settings survey developed by the author was distributed to 120 principals belonging to the National Association of Therapeutic Schools and Programs. Two mailings yielded a return of 68 (56.6%) usable survey instruments from which principals' self-reporting on knowledge, value and application of learning styles was examined. Focus for this study was provided through three research questions: (a) to determine to what extent principals in therapeutic settings self-reported general knowledge of learning style applications, (b) to determine to what extent principals exhibit …

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Variation Of Geotechnical Strength Properties With Age Of Landfills Accepting Biosolids, Kishore Pinapati Jan 2006

Variation Of Geotechnical Strength Properties With Age Of Landfills Accepting Biosolids, Kishore Pinapati

Electronic Theses and Dissertations

The solid portion of waste disposal, known as Municipal Solid Waste (MSW) can be landfilled. Landfilling has proved to be a safe, sanitary and economical method of disposal. A by-product from wastewater treatment plants called biosolids is sometimes co-disposed along with MSW in landfills. Recent work at the University of Central Florida has focused on the behavior of the mixture of MSW and biosolids. As an increased amount of waste accumulates in these landfills, it creates a new problem – the geotechnical stability of landfills. In current literature, classical geotechnical testing methods have been followed to find the strength properties …

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Study Of Heat Transfer Characteristics Of Impinging Air Jet Using Pressure Andn Temperature Sensitive Luminescent Paint, Quan Liu Jan 2006

Study Of Heat Transfer Characteristics Of Impinging Air Jet Using Pressure Andn Temperature Sensitive Luminescent Paint, Quan Liu

Electronic Theses and Dissertations

Luminescent coating measurement system is a relatively new technology for quantitative pressure and temperature measurement. Usually referred to as Pressure Sensitive Paint (PSP) and Temperature Sensitive Paint (TSP), luminescent coatings contain sensor molecules, which undergoes a luminescent transition when excited with light of proper wavelength. The reaction is pressure and/or temperature sensitive. The image of TSP or PSP coated model surface can be captured with a scientific grade camera and then processed to obtain full field temperature and pressure distribution with very high fidelity. The preparation time of the technique is short. The measurement system offers an economic alternative to …

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Working Memory, Search, And Signal Detection: Implications For Interactive Voice Response System Menu Design, Patrick Commarford Jan 2006

Working Memory, Search, And Signal Detection: Implications For Interactive Voice Response System Menu Design, Patrick Commarford

Electronic Theses and Dissertations

Many researchers and speech user interface practitioners assert that interactive voice response (IVR) menus must be relatively short due to constraints of the human memory system. These individuals commonly cite Miller's (1956) paper to support their claims. The current paper argues that these authors commonly misuse the information provided in Miller's paper and that hypotheses drawn from modern theories of working memory (e.g., Baddeley and Hitch, 1974) would lead to the opposite conclusion – that reducing menu length by creating a greater number of menus and a deeper structure will actually be more demanding on users' working memories and will …

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The Effects Of Inquiry And Single-Gender Grouping On Second Grade Girls' Attitudes And Participation In Science, Elsy Estrada Jan 2006

The Effects Of Inquiry And Single-Gender Grouping On Second Grade Girls' Attitudes And Participation In Science, Elsy Estrada

Electronic Theses and Dissertations

Disparities between males and females in attitudes toward science have been the focus of extensive investigations. Studies have found that females feel intimidated by their male peers in science and mathematics classes, making girls less likely to participate. Their confidence in these areas decreases and they become less likely to follow related career paths. Researchers and educators are at task to find methods to provide equal learning opportunities for all students. The purpose of this action research was to investigate the effects of single-gender grouping and inquiry-based teaching on girls' participation and attitude in science class. This study took place …

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The Effect Of Social Presence On Teacher Technology Acceptance, Continuance Intention, And Performance In An Online Teacher Professional Development Course, Jo Smith Jan 2006

The Effect Of Social Presence On Teacher Technology Acceptance, Continuance Intention, And Performance In An Online Teacher Professional Development Course, Jo Smith

Electronic Theses and Dissertations

The purpose of this study was to determine if the Technology Acceptance Model (TAM) could explain the relationship between teacher's acceptance of an online teacher professional development course and their continuance intentions regarding online teacher professional development (oTPD). This study focused on the perceptions of the teachers as opposed to the design or implementation of oTPD. The participants (N=517) were mostly teachers (88.8%) enrolled in a statewide online course to provide classroom teachers with the latest knowledge of research-based instructional reading strategies. The course was offered over a 10-14 week period during the Spring 2006 semester through a public state …

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Pluralism And Presidential Campaign Finance Reform: A Policy Analysis Of Campaign Finance Reform From Feca To Bcra, Tully Dillon Jan 2006

Pluralism And Presidential Campaign Finance Reform: A Policy Analysis Of Campaign Finance Reform From Feca To Bcra, Tully Dillon

Electronic Theses and Dissertations

One of the underlying themes in American politics is that the addition of campaign finance laws at the presidential election level will have a negative relationship with amount of influence and money in campaigns and the amount of regulation. In other words, as regulation goes up the amount of money and influence will decrease. However, with the recent 2004 presidential election this concept has surely been shown to be problematic, at least at the outset. The purpose of this thesis is to examine this relationship and to further expand upon the limited knowledge of this sub-field of political science. This …

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Caregiver Burden And Coping Responses For Females Who Are The Primary Caregiver For A Family Member Living With Hiv/Aids In Kenya, Veronica Kimemia Jan 2006

Caregiver Burden And Coping Responses For Females Who Are The Primary Caregiver For A Family Member Living With Hiv/Aids In Kenya, Veronica Kimemia

Electronic Theses and Dissertations

Caring for a family member who is ill can be a draining experience (Cooper et al., 2006; Daire, 2002; Zarit et al, 1980). Providing care for a family member that is living with HIV/AIDS is potentially even more stressful because of social meanings associated with HIV/AIDS infection (Stajduhar, 1998) and the contagious nature of the HIV virus (Powell-Cope & Brown, 1992). Research indicates that most caregivers are female (Bunting, 2001; Songwathana, 2000). In Africa women bear the brunt of the burden of providing care for family members who are living with HIV/AIDS (Mushonga, 2001; Olenja, 1999). This study examined coping …

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Avl And Response Time Reduction: Image And Reality, Charles Russo Jan 2006

Avl And Response Time Reduction: Image And Reality, Charles Russo

Electronic Theses and Dissertations

Automatic vehicle locator (AVL) systems, utilizing military's global positioning system, may impact response time to law enforcement calls for service. In order to evaluate the impacts of AVL on response time to calls for service at the Altamonte Springs Police Department (ASPD), computer aided dispatch (CAD) data from years 1999 to 2003 were analyzed. The analysis of each of the data sets consisted of an initial sequence chart, an analysis of variance (ANOVA), a means plot and a linear regression. Interviews of ASPD personnel were conducted to understand user perceptions of AVL. Based on the ANOVA results, trends indicate that …

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In Transition: An Activity Theoretical Analysis Examining Electronic Portfolio Tools' Mediation Of The Preservice Teacher's Authoring Experience, Rebecca Fiedler Jan 2006

In Transition: An Activity Theoretical Analysis Examining Electronic Portfolio Tools' Mediation Of The Preservice Teacher's Authoring Experience, Rebecca Fiedler

Electronic Theses and Dissertations

Co-chairs: Dr. Donna Baumbach Dr. Gail West Background: Electronic portfolios are increasingly used to make critical decisions about teacher candidates and program accreditation. Adoption rates for portfolios are at nearly 90% for schools, colleges, and departments of education (Salzman, Denner, & Harris, 2002). Over 50% of institutions who rated themselves or were nominated by others as exemplary users of electronic portfolios use web-based database-driven electronic portfolio systems (Strudler & Wetzel, 2005b; Wetzel & Strudler, 2005b). There is a paucity of theory-driven, systematic, rigorous research on electronic portfolios and a need for in-depth, context-aware research on such initiatives. Purpose: To explicate …

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Fast Response Liquid Crystal Devices, Yung-Hsun Wu Jan 2006

Fast Response Liquid Crystal Devices, Yung-Hsun Wu

Electronic Theses and Dissertations

Liquid crystal (LC) has been widely used for displays, spatial light modulators, variable optical attenuators (VOAs) and other tunable photonic devices. The response time of these devices is mainly determined by the employed liquid crystal material. How to obtain fast response for the LC devices is a fundamentally important and technically challenging task. In this dissertation, we investigate several methods to improve liquid crystal response time, for examples, using dual-frequency liquid crystals, polymer stabilized liquid crystals, and sheared polymer network liquid crystals. We discover a new class of material, denoted as sheared polymer network liquid crystal (SPNLC) which exhibits a …

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Fade Statistics For A Lasercom System And The Joint Pdf Of A Gamma-Gamma Distributed Irradiance And Its Time Derivative, Frida Stromqvist Vetelino Jan 2006

Fade Statistics For A Lasercom System And The Joint Pdf Of A Gamma-Gamma Distributed Irradiance And Its Time Derivative, Frida Stromqvist Vetelino

Electronic Theses and Dissertations

The performance of lasercom systems operating in the atmosphere is reduced by optical turbulence, which causes irradiance fluctuations in the received signal. The result is a randomly fading signal. Fade statistics for lasercom systems are determined from the probability density function (PDF) of the irradiance fluctuations. The expected number of fades per second and their mean fade time require the joint PDF of the fluctuating irradiance and its time derivative. Theoretical integral expressions, as well as closed form, analytical approximations, were developed for the joint PDF of a gamma-gamma distributed irradiance and its time derivative, and the corresponding expression for …

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Catching Satisfaction: Personal And Political Framing In The Homebirth Movement, Nasima Pfaffl Jan 2006

Catching Satisfaction: Personal And Political Framing In The Homebirth Movement, Nasima Pfaffl

Electronic Theses and Dissertations

This thesis illuminates the experiences, motives, and framing process of a cohort of homebirthing women in Tucson, Arizona who embody the collective action frames of the national homebirth movement. A model of birth frame construction, alignment and adoption is presented that expands current theory on social movement framing processes, cognitive liberation, and life politics in health and self-help related movements. The study explores the evolution of homebirth midwifery nationally and locally. It articulates the main collective action frames that argue against standard maternity care and presents the alternatives proffered by the homebirth movement. It presents micro-level experiences of movement pioneers, …

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Student Retention In Florida Community Colleges:Ccsse's Retention Index And Florida Accountability Measures, Marcia Roman Jan 2006

Student Retention In Florida Community Colleges:Ccsse's Retention Index And Florida Accountability Measures, Marcia Roman

Electronic Theses and Dissertations

Student retention has become a serious topic in the past several decades (Wild and Ebbers, 2002). Problematic, however, is how retention is defined and measured, as well as a lack of multi-institutional studies that support a theoretical model for improving student retention, particularly in community colleges (Bailey & Alfonso, 2005). The Community College Survey of Student Engagement (CCSSE) was launched in 2001. Based on extensive research that pertains to student learning and persistence, CCSSE defined five benchmarks of educational practice. Three of the benchmarks comprise the Retention Index. CCSSE has encouraged additional studies to further validate the relatively new survey …

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Class Size Reduction: Is It Worth The Cost?A Meta-Analysis Of The Research, Christopher Camacho Jan 2006

Class Size Reduction: Is It Worth The Cost?A Meta-Analysis Of The Research, Christopher Camacho

Electronic Theses and Dissertations

The purpose of this study was to investigate whether ethnicity, gender, grade level and content area mediate the relationship between class size and student achievement. Twenty six educational research studies were collected for this meta-analysis. A meta-analytical approach using like data sets were used to report the most accurate information. Fixed and random effect models were used to ensure the distribution across different studies. A total of three studies were meta-analyzed for this research. The studies included in this research examined class size and student achievement for students in grades K-7. This research examined whether there was a mediating effect …

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Understanding Employees' Behavioral Reactions To Aggression In Organizations, Marie Mitchell Jan 2006

Understanding Employees' Behavioral Reactions To Aggression In Organizations, Marie Mitchell

Electronic Theses and Dissertations

The purpose of this dissertation is to explore employees' behavioral reactions to the perceived aggression of others. Perceived aggression is defined as behavior that is perceived to be intentionally harmful by the intended target. A typology is developed that identifies two primary dimensions of behavioral reaction: (1) the form of the behavior (aggression/non-aggression) and (2) the direction of the behavior (toward the source of the harm/not toward the source of the harm). Based on these dimensions, the typology produces four categories of behavioral reactions: retaliatory aggression, displaced aggression, constructive problem-solving, and withdrawal. A model is then presented, which identifies various …

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How My Practice Of Using Manipulatives In Teaching Multiplying And Dividing Fractions Influences The Students' Conceptual Unders, Vickie Bale Jan 2006

How My Practice Of Using Manipulatives In Teaching Multiplying And Dividing Fractions Influences The Students' Conceptual Unders, Vickie Bale

Electronic Theses and Dissertations

This qualitative study examined how my practice of using manipulatives to teach multiplying and dividing fractions to 8th grade students facilitated their conceptual understanding of those operations. The students who participated in the study were enrolled in one of my intensive mathematics classes. Before the lessons began, I interviewed the students and gave them a pre-assessment to determine their content knowledge and comfort level with manipulatives. The students engaged in activities that included solving problems using various manipulatives. During the activities, I made observations of their problem solving techniques and how they used the manipulatives. At the conclusion of the …

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A Focus Group Of Adolescent Haitian Immigrants: Factors Affecting Their Perceptions Of Academic Success In A Florida Public High School, Mercedes Pichard Jan 2006

A Focus Group Of Adolescent Haitian Immigrants: Factors Affecting Their Perceptions Of Academic Success In A Florida Public High School, Mercedes Pichard

Electronic Theses and Dissertations

The goal of this ethnographic research was to examine the perceptions of academic success of adolescent Haitian immigrant students who have arrived in the United States within the last five years and attend a public high school in Florida. The Haitian students were asked to explain the tensions they perceive between Haitian societal and educational norms and beliefs and American ones, and explain their perceptions and concerns regarding success. The importance of their perceptions as influences on their behavior was related to Bandura's Social Cognitive Learning Theory. The relevance of certain questions concerning academic success for Haitian students was investigated …

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Preferences For Performance Measures: A Study Of A Federal Agency, Gina Beckles Jan 2006

Preferences For Performance Measures: A Study Of A Federal Agency, Gina Beckles

Electronic Theses and Dissertations

The purpose of this dissertation was to determine the preferences of clients of programs administered by selected federal agencies and the preferences of the federal managers who administer the programs in assessing performance measurement systems. Using the general progression of previous budgetary models used in the public sector, the researcher developed the Modified Balance Scorecard (MBSC), a performance measurement model designed specifically for use within the public sector. Surveys based on the MBSC were administered to public managers and to clients of those managers in order to determine their preferences. The results showed that managers preferred public good measures and …

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Constructs Unique To Two Volusia County Elementary Writing Programs, Kathleen Holt Jan 2006

Constructs Unique To Two Volusia County Elementary Writing Programs, Kathleen Holt

Electronic Theses and Dissertations

This case study sought to examine constructs of two fourth-grade elementary writing programs in Volusia County, Florida. With only the Sunshine State Standards as a guide, each district, school, or teacher must design a writing curriculum that addresses those standards, develops writers, and provides accountability. Fourth-grade classrooms were selected because students at that grade level are required to participate in the FCAT Writing +, a two-day state assessemnt that requires students to compose an essay on a designated topic within a 45-minute period. A second part of the assessment consists of multiple-choice items covering editing and revising, graphic organizers, and …

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The Role Of Community College Registrars In Relation To Student Information Systems Implementation, Sandra Lepley Jan 2006

The Role Of Community College Registrars In Relation To Student Information Systems Implementation, Sandra Lepley

Electronic Theses and Dissertations

This study examined the effects of implementing Web-enabled technology systems on the functional role of the community college registrar. The focus on systems implementation included in-house, outsourced, consortia, or combination of implementation strategies. A quantitative and qualitative approach included several interviews and a mailed survey questionnaire. The researcher developed the instrument from human resources position description forms, an adapted administrative Q-sort technique, and a role conflict and ambiguity perception questionnaire. The study targeted the members of the American Association of Collegiate Registrars and Admissions Officers. The research findings indicated that some aspects of perceived role, role conflict (harmony), and ambiguity …

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Silence, Absence, And Mystery In Linda Hogan's Mean Spirit, Solar Storms, And Power, Kathryn Erickson Jan 2006

Silence, Absence, And Mystery In Linda Hogan's Mean Spirit, Solar Storms, And Power, Kathryn Erickson

Electronic Theses and Dissertations

In Mean Spirit, Solar Storms, and Power, Linda Hogan uses the devices of silence, absence, and mystery to articulate the oppression and marginalization of Native Americans. Specifically, because of the environmental crises that produce conflict in each novel, the project benefits from ecocriticism, ecofeminism, and ecopsychology. Also, because of various interpretations that open up when silence is examined, theories of deconstruction strengthen the thesis. Ultimately, Hogan's characters move from silence as a form of tyranny to silence as a form of reconnection with tribal ways. As the characters discover pathways to native traditions, they also discover spiritual connections with the …

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Frames In Hilbert C*-Modules, Wu Jing Jan 2006

Frames In Hilbert C*-Modules, Wu Jing

Electronic Theses and Dissertations

Since the discovery in the early 1950's, frames have emerged as an important tool in signal processing, image processing, data compression and sampling theory etc. Today, powerful tools from operator theory and Banach space theory are being introduced to the study of frames producing deep results in frame theory. In recent years, many mathematicians generalized the frame theory from Hilbert spaces to Hilbert C*-modules and got significant results which enrich the theory of frames. Also there is growing evidence that Hilbert C*-modules theory and the theory of wavelets and frames are tightly related to each other in many aspects. Both …

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Mathematical Modeling Of Smallpox Withoptimal Intervention Policy, Niwas Lawot Jan 2006

Mathematical Modeling Of Smallpox Withoptimal Intervention Policy, Niwas Lawot

Electronic Theses and Dissertations

In this work, two differential equation models for smallpox are numerically solved to find the optimal intervention policy. In each model we look for the range of values of the parameters that give rise to the worst case scenarios. Since the scale of an epidemic is determined by the number of people infected, and eventually dead, as a result of infection, we attempt to quantify the scale of the epidemic and recommend the optimum intervention policy. In the first case study, we mimic a densely populated city with comparatively big tourist population, and heavily used mass transportation system. A mathematical …

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Integrated Wavelength Stabilization Of Broad Area Semiconductor Lasers Using A Dual Grating Reflector, Jason O'Daniel Jan 2006

Integrated Wavelength Stabilization Of Broad Area Semiconductor Lasers Using A Dual Grating Reflector, Jason O'Daniel

Electronic Theses and Dissertations

A new fully integrated wavelength stabilization scheme based on grating-coupled surface-emitting lasers is explored. This wavelength stabilization scheme relies on two gratings. The first grating is fabricated on the p-side of the semiconductor laser in close proximity to the laser waveguide such that it couples light out of the guided mode of the waveguide into a propagating mode in the substrate; this grating is known as the grating coupler. The second grating is fabricated on the n-side of the substrate such that for the stabilization wavelength, this second grating operates in the Littrow condition and is known as the feedback …

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Polarization-Independent Liquid Crystal Devices, Yi-Hsin Lin Jan 2006

Polarization-Independent Liquid Crystal Devices, Yi-Hsin Lin

Electronic Theses and Dissertations

Liquid crystal (LC) devices can be operated as amplitude modulators and phase modulators. LC amplitude modulation is commonly used in liquid crystal display (LCD) while phase-only modulation is useful for laser beam steering, tunable grating, prism, lens, and other photonic devices. Most LC devices are polarization dependent and require at least one polarizer. As a result, the optical efficiency is low. To enhance display brightness, a power hungry backlight has to be used leading to a high power consumption and short battery life. In a LC phase modulator, the polarization dependent property complicates the laser beam steering system. It is …

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Propagation Effect In Inhomogeneous Media, Including Media With Light-Induced And Fixed Gratings, Chang-Ching Tsai Jan 2006

Propagation Effect In Inhomogeneous Media, Including Media With Light-Induced And Fixed Gratings, Chang-Ching Tsai

Electronic Theses and Dissertations

Optical waves propagation in various types of volume gratings, materials with constant impendence and optical fibers are studied. Instability of cross–phase modulation and of Energy transfer via GRON-type (Grating-type Orientational Nonlinearity in Liquid Crystal) Stimulated Scattering is numerically observed. Two diffractive optical elements made of volume gratings are suggested and analyzed. A transmission hologram based on the analogy with Stimulated Raman Adiabatic Passage (STIRAP) in nonlinear optics is proposed. This transmission hologram demonstrates high diffraction efficiency and low sensitivity to polarization and hologram strength. The other is a reflection hologram with two crossed-gratings. It features good angular selectivity in comparison …

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All-Semiconductor High Power Mode-Locked Laser System, Kyungbum Kim Jan 2006

All-Semiconductor High Power Mode-Locked Laser System, Kyungbum Kim

Electronic Theses and Dissertations

All-optical synchronization and its application in advanced optical communications have been investigated in this dissertation. Dynamics of all-optical timing synchronization (clock recovery) using multi-section gain-coupled distributed-feedback (MS-GC DFB) lasers are discussed. A record speed of 180-GHz timing synchronization has been demonstrated using this device. An all-optical carrier synchronization (phase and polarization recovery) scheme from PSK (phase shift keying) data is proposed and demonstrated for the first time. As an application of all-optical synchronization, the characterization of advanced modulation formats using a linear optical sampling technique was studied. The full characterization of 10-Gb/s RZ-BPSK (return-to-zero binary PSK) data has been demonstrated. …

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