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Determination Of The Degradation Mechanism For Polychlorinated Biphenyl Congeners Using Mechanically Alloyed Magnesium/Palladium, Robert Devor Jan 2008

Determination Of The Degradation Mechanism For Polychlorinated Biphenyl Congeners Using Mechanically Alloyed Magnesium/Palladium, Robert Devor

Electronic Theses and Dissertations

Polychlorinated biphenyls are a ubiquitous environmental contaminant that can be found today throughout the world in soils and sediments, lakes and rivers, and flora and fauna. PCBs have percolated throughout the food chain, so that almost every human being has a detectable amount of the contaminant within their blood stream. Existing remediation methods include incineration, dredging and landfilling, and microbial degradation, but all of these methods have drawbacks that limit their effectiveness as treatment options. Recently, the use of zero-valent metals as a means of reductive dechlorination has been explored. Using a combination of zero-valent magnesium and catalytic palladium, a …

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Attachment Style's Impact On The Perception Of Self-Verifying And Self-Enhancing Comforting Messages, Krista Shellabarger Jan 2008

Attachment Style's Impact On The Perception Of Self-Verifying And Self-Enhancing Comforting Messages, Krista Shellabarger

Electronic Theses and Dissertations

This study investigates the connection between one's adult attachment style and one's evaluation of verifying or enhancing comforting messages. Drawing from research by Swann (2005) and Katz and Joiner (2002), the hypothesis predicted that an individual would prefer verifying messages over enhancing messages regardless of attachment style. A research question was also posed: Will an individual's adult attachment style moderate the degree to which a person perceives the communication of verifying or enhancing messages as helpful or effective? In an effort to find these answers, a questionnaire was completed by 251 individuals. Results indicate a preference for verifying messages among …

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Using Stable Isotopes To Assess Population Structure And Feeding Ecology Of North Pacific Humpback Whales (Megaptera Novaeangliae), Briana Witteveen Jan 2008

Using Stable Isotopes To Assess Population Structure And Feeding Ecology Of North Pacific Humpback Whales (Megaptera Novaeangliae), Briana Witteveen

Electronic Theses and Dissertations

The North Pacific humpback whale (Megaptera novaeangliae) is a wide-ranging baleen whale species with a complex life history and population structure. As seasonal migrants, humpback whales are known to inhabit cooler, high-latitude waters when foraging and low-latitudes for mating and calving. Beyond this general migratory pattern, a number of demographic characteristics including, abundance, distribution, seasonal occurrence, and prey preferences remain unknown or poorly described. A complete understanding of humpback whale ecology is therefore lacking. Many methods used to explore these aspects of cetacean ecology are either prohibitively expensive or limited in the scope of what can be learned from their …

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The Preparedness Of Elementary Music Teachers To Include Students With Challenging Behavior In Their Classrooms, Christine Shirk Jan 2008

The Preparedness Of Elementary Music Teachers To Include Students With Challenging Behavior In Their Classrooms, Christine Shirk

Electronic Theses and Dissertations

Students with disabilities, some with emotional and behavior disorders, are included in almost all elementary music classes. Students with emotional behavior disorders are one of the greatest challenges for teachers. To be effective, teachers must develop strategies and inclusive practices specifically geared towards intervention. With the quantity of students served and only limited class time with students, the music teacher is often unaware of the unique needs of specific special learners. Music teacher preparation has been inadequate in training teachers for inclusion. Elementary music educators rarely have outside support to deal with classroom challenges as they serve students with disabilities …

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A Study Of Instructor Persona In The Online Environment, William Phillips Jan 2008

A Study Of Instructor Persona In The Online Environment, William Phillips

Electronic Theses and Dissertations

Higher education continues to witness a significant increase in the demand for online courses delivered via the World Wide Web. Institutions are challenged to position and prepare faculty for successfully developing and delivering this increasing number of online courses from a distance. Becoming successful in the online classroom presents difficult and time-consuming challenges to the novice faculty member. Instructors who transition from the face-to-face classroom find that some characteristics, strategies and procedures carryover into the online classroom. The new teaching environment presents an evolving spectrum of possibilities for the online professor, a new paradigm for teaching and learning. This research …

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A Phenomenological Study Of The Perceptions And Experiences Of Seven Urban Middle School Science Teachers Related To Retention, Lu Dunn Jan 2008

A Phenomenological Study Of The Perceptions And Experiences Of Seven Urban Middle School Science Teachers Related To Retention, Lu Dunn

Electronic Theses and Dissertations

Background: Job satisfaction is essential to retain teachers in classrooms. Increased challenges in today s classrooms discourage many teachers from reaching veteran status. Teachers with a perception that they are making a difference appear to have more resilience in the difficult times in their classrooms. Purpose: To investigate the experiences of middle school science teachers. This study explored the influence of perceptions, beliefs, and experiences on job attrition and teacher satisfaction; and helps explain the cumulative effects that contributed to teachers' dissatisfaction. This study analyzed the intensification of the teaching profession and the increased emotional stress this causes for teachers. …

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Co-Teaching: Using Video To Identify Current Practices And Promote Teacher Discussion In Middle School Mathematics Classrooms, Kimberly Davis Jan 2008

Co-Teaching: Using Video To Identify Current Practices And Promote Teacher Discussion In Middle School Mathematics Classrooms, Kimberly Davis

Electronic Theses and Dissertations

This study explored the co-teaching practices occurring within four middle school mathematics classrooms and the influence of video discussions on each co-teaching team. The study took place within three middle schools in central Florida. The study provides a clear picture of the current status of middle school co-taught mathematics classrooms. The research results were inconclusive in that the key components of co-teaching were not observed (co-planning, co-instructing and co-assessing) and the findings were similar to past co-teaching research indicating mixed results. Overall, concerns that emerged from the study were a lack of heterogeneous classrooms, clarity for the role of the …

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The Spiritual Competency Scale: A Comparison To The Aservic Spiritual Competencies, Linda Robertson Jan 2008

The Spiritual Competency Scale: A Comparison To The Aservic Spiritual Competencies, Linda Robertson

Electronic Theses and Dissertations

Spiritual and religious beliefs are significant aspects of a person's worldview and have been well established within many disciplines as a resource for physical and mental health. Therefore, they are relevant topics for counselors. The governing bodies of the counseling profession support the discussion of these beliefs in counseling. To meet the ethical mandates for competency in this area, the Association for Spiritual, Ethical, and Religious Values in Counseling (ASERVIC) produced the Spiritual Competencies. Despite these efforts, spiritual and religious material continues to be neglected in counselor training programs. In the absence of a formal measure of spiritual competency, curricular …

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Accepting Technology And Overcoming Resistance To Change Using The Motivation And Acceptance Model, Daniel Siegel Jan 2008

Accepting Technology And Overcoming Resistance To Change Using The Motivation And Acceptance Model, Daniel Siegel

Electronic Theses and Dissertations

This research analyzed why some university faculty resisted a new software program using a new model of motivation. The new model, called the motivation and acceptance model (MAM), was inspired by the technology acceptance model and the commitment and necessary effort model of motivation. This model was tested on faculty at a college in a large southeastern university who were resisting a new software program called LiveText. This research used regression analysis to determine the relationship between the variables of the MAM: perceived usefulness, perceived organizational support, perceived ease of use, and attitude toward LiveText. The research was conducted during …

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Case Studies Of Reading Performance Of Male Students And The Single-Sex Classroom, Eric Basilo Jan 2008

Case Studies Of Reading Performance Of Male Students And The Single-Sex Classroom, Eric Basilo

Electronic Theses and Dissertations

Data from standardized test scores shows boys are falling further behind in literacy each year. Thanks to countless hours of research, we can pinpoint some of the causes for this decline. The major challenge educators face is how to keep boys interested in reading while placed in classrooms not necessarily designed to meet their needs. One option being explored is the use of single-sex classrooms. For over 160 years in the United States, public school single-sex classrooms have existed. The thought is that by separating boys and girls for academic classes, certain distractions will be eliminated, the environment can be …

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Closing The Achievement Gap For English Language Learners:A Comparison Of Language Arts/Esol And One-Way Developmental Bilingual, Kimberly Marlow Jan 2008

Closing The Achievement Gap For English Language Learners:A Comparison Of Language Arts/Esol And One-Way Developmental Bilingual, Kimberly Marlow

Electronic Theses and Dissertations

The present study was conducted to investigate two English Language Learner programs in one Florida county and their implications for student achievement. The literature review showed that, as students progress through the educational system, the academic content becomes more and more abstract, forcing students to rely more heavily on their oral and written communication skills in English. Significant achievement gaps, sometimes extremely large, were also identified between English-only students and English Language Learner students. One study highlighted a 46% gap on the 2005 National Assessment of Education Progress (NAEP). The present study was designed to investigate 23 middle schools in …

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The Relationship Between School Culture And Third-Grade Fcat Reading Proficiency In Seminole County Public Elementary Schools, Kelley Novak Jan 2008

The Relationship Between School Culture And Third-Grade Fcat Reading Proficiency In Seminole County Public Elementary Schools, Kelley Novak

Electronic Theses and Dissertations

This study aimed to determine the relationship between school culture and student achievement. Elementary school teachers (N=574) from 27 schools in suburban Seminole County, Florida completed the School Culture Triage Survey to generate a school culture score. The participating schools were ranked and placed in categories representing the top 33% (N=9), middle 33% (N=9), and bottom 33% (N=9) of the population based on their culture score. School culture data were analyzed and correlated with third grade student achievement data, as measured by the 2007 Florida Comprehensive Assessment Test (FCAT) Reading to determine if there were any relationships between (a) school …

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Effects Of Orthophosphate Corrosion Inhibitor In Blended Water Quality Environments, Erica Stone Jan 2008

Effects Of Orthophosphate Corrosion Inhibitor In Blended Water Quality Environments, Erica Stone

Electronic Theses and Dissertations

This study evaluated the effects of orthophosphate (OP) inhibitor addition on iron, copper, and lead corrosion on coupons exposed to different blends of groundwater, surface water, and desalinated seawater. The effectiveness of OP inhibitor addition on iron, copper, and lead release was analyzed by statistical comparison between OP treated and untreated pilot distribution systems (PDS). Four different doses of OP inhibitor, ranging from zero (control) to 2 mg/L as P, were investigated and non-linear empirical models were developed to predict iron, copper, and lead release from the water quality and OP doses. Surface characterization evaluations were conducted using X-ray Photoelectron …

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A Framework To Align Strategy, Improvement Performance, And Customer Satisfaction Using An Integration Of Six Sigma And Balanced, Adriana Rodriguez Jan 2008

A Framework To Align Strategy, Improvement Performance, And Customer Satisfaction Using An Integration Of Six Sigma And Balanced, Adriana Rodriguez

Electronic Theses and Dissertations

This dissertation investigated the development, implementation, and evaluation of a management methodology founded on the alignment among the strategy, performance, and customer to bring value to any organization. A case study/action research in a service organization, called Institution "Z," provided the opportunity to assess the effects of the proposed Six Sigma Scorecard (SSS) methodology in the productivity indicators (measured by cycle time, line capacity, and number of errors). The Case study/action research was conducted in three phases: Model and Concepts Design, Data Collection, and Findings. During the research, validity was pursued by using triangulation and theory to help maintain the …

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The Effects Of Informal Science Education On Students' Attitudes And Academic Performance, Samuel Ashley Jan 2008

The Effects Of Informal Science Education On Students' Attitudes And Academic Performance, Samuel Ashley

Electronic Theses and Dissertations

Will student attitudes towards science change when they are given a chance to explore an area of science in which they have indicated an interest? This action research thesis investigated this question over a period of nine weeks. The subjects of this study included twelve students enrolled in the same seventh grade physical science class. The school was located in a suburban setting in the Southeast United States. Data for this study was collected with anecdotal notes, participation grid, science attitude survey, student interviews, and student journals. This study found that when students are given the opportunity to pursue an …

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Modeling Transmission Dynamics Of Tuberculosis Including Various Latent Periods, Tracy Atkins Jan 2008

Modeling Transmission Dynamics Of Tuberculosis Including Various Latent Periods, Tracy Atkins

Electronic Theses and Dissertations

The systems of equations created by Blower et al. (1995) and Jia et al. (2007) designed to model the dynamics of Tuberculosis are solved using the computer software SIMULINK. The results are first employed to examine the intrinsic transmission dynamics of the disease through two models developed by Blower et al. (1995). The "simple transmission model" was used primarily to give insight to the behavior of the susceptible, latent, and infectious groups of individuals. Then, we consider a more detailed transmission model which includes several additional factors. This model captures the dynamics of not only the susceptible, latent and infectious …

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Evaluating Tactical Combat Casualty Care Training Treatments Effects On Combat Medic Trainees In Light Of Select Human Descripti, Teresita Sotomayor Jan 2008

Evaluating Tactical Combat Casualty Care Training Treatments Effects On Combat Medic Trainees In Light Of Select Human Descripti, Teresita Sotomayor

Electronic Theses and Dissertations

The use of military forces in urban operations has increased considerably over the past years. As illustrated by the current conflict in Iraq, the Army finds itself fighting its toughest battles in urban areas facing unconventional forces. Soldiers face many threats in hostile fire environments, whether conducting large-scale mechanized warfare, low-intensity conflicts, or operations other than war. Through 1970, there has been no demonstrable reduction in battlefield mortality rate as a percentage of all casualties since data was kept since before the Civil War. For that period of time, nearly all the reduction in overall mortality rate occurred through reduced …

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Evaluation Of The Antecedents Of Cultural Competence, Mary Harper Jan 2008

Evaluation Of The Antecedents Of Cultural Competence, Mary Harper

Electronic Theses and Dissertations

Purpose: The threefold purpose of this research is to identify the essential antecedents of cultural competence as identified by international nurse researchers, to compare the content of the extant cultural competence instruments to these antecedents and to potentially identify gaps in their conceptualization. A secondary aim of this research is to initiate validation of Harper's model of ethical multiculturalism. Conceptual Basis: The model of ethical multiculturalism depicts the attributes of ethical multiculturalism as the fulcrum of a balance between two ethical philosophies of fundamentalism and relativism. The attributes of moral reasoning, beneficence/nonmaleficence, respect for persons and communities, and cultural competence …

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Sex Education Policy In Florida: Strategies For Change, Jenna Cawley Jan 2008

Sex Education Policy In Florida: Strategies For Change, Jenna Cawley

Electronic Theses and Dissertations

Sex education policies and programs in Florida are largely dominated by the abstinence-only approach. This paper makes the case that abstinence-only education is a failing policy in Florida, and evaluates strategies advocates may use in order to accomplish reform. Three different strategies are evaluated: countywide school district reform, statewide rejection of federal abstinence-only funding, and statewide standardization of sex education via legislation. Contrasts are drawn between all three strategies with regard to their potential impact on sex education policy in Florida, viability, and the challenges they present to advocates. This paper concludes that statewide standardization of sex education in Florida …

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Hyperactivity In Boys With Attention-Deficit/Hyperactivity Disorder: A Ubiquitous Core Symptom Or Manifestation Of Working Memor, Jennifer Bolden Jan 2008

Hyperactivity In Boys With Attention-Deficit/Hyperactivity Disorder: A Ubiquitous Core Symptom Or Manifestation Of Working Memor, Jennifer Bolden

Electronic Theses and Dissertations

Hyperactivity is currently considered a core and ubiquitous feature of attention-deficit/hyperactivity disorder (ADHD); however, an alternative model challenges this premise and hypothesizes a functional relationship between working memory (WM) and activity level. The current study investigated whether children s activity level is functionally related to WM demands associated with the domain-general central executive and subsidiary storage/rehearsal components using tasks based on Baddeley s (2007) WM model. Activity level was objectively measured 16 times per second using wrist- and ankle-worn actigraphs while 23 boys between 8 and 12 years of age completed control tasks and visuospatial/phonological WM tasks of increasing memory …

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Work-Family Conflict And Performance Evaluations: Who Gets A Break?, Kara Hickson Jan 2008

Work-Family Conflict And Performance Evaluations: Who Gets A Break?, Kara Hickson

Electronic Theses and Dissertations

Forty percent of employed parents report that they experience work-family conflict (Galinsky, Bond, & Friedman, 1993). Work-family conflict (WFC) exists when role pressures from the work and family domains are mutually incompatible. WFC is associated with decreases in family, job, and life satisfaction and physical health; intention to quit one's job; and increases in workplace absenteeism. Women may be more impacted by WFC than men, as women report completing 65-80% of the child care (Sayer, 2001) and spend 80 hours per week fulfilling work and home responsibilities (Cowan, 1983). Research suggests that WFC can be reduced with social support, such …

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Family Conflict And Emerging Adults' Attributions Of Conflict In Romantic Relationships, Arazais Oliveros Jan 2008

Family Conflict And Emerging Adults' Attributions Of Conflict In Romantic Relationships, Arazais Oliveros

Electronic Theses and Dissertations

The impact of parents' marital conflict and parent-child conflict on the adjustment of children is well documented. Given the theoretical and empirical data to support a relationship between experiencing interparental and parent-child conflict during childhood and later conflict in romantic relationships, it is important to investigate the potential mechanisms that operate in this relationship. Thus, the present study sought to investigate the extent to which attributions of conflict mediate the relationship between experiencing interparental and parent-child conflict and later conflict in a romantic relationship. Results were based on the responses of emerging adults (190 males and 473 females) enrolled in …

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Determinants Of Turkish Police Officers' Perception Of Integrity: Impact Of Organizational Culture, Bahadir Kucukuysal Jan 2008

Determinants Of Turkish Police Officers' Perception Of Integrity: Impact Of Organizational Culture, Bahadir Kucukuysal

Electronic Theses and Dissertations

The purpose of this research was to examine the influence of police organizational culture on officers' perception of integrity in the Turkish National Police (TNP). Adopting an organizational rather than an individualistic perspective, this study focused on police organizational culture to investigate the causes of integrity problems in the TNP. While focusing on police organizational culture, this study also aimed to determine to what extent officers' perceptions of integrity are influenced by personal and occupational attributes such as age, gender, rank, income, educational level, years of employment, and assignment type. The research was conducted in Turkey's two largest cities, Istanbul …

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Determinants Of Human Resources Management Performance On County Efficiencies: A Study Of Florida Counties, Janet Davis Jan 2008

Determinants Of Human Resources Management Performance On County Efficiencies: A Study Of Florida Counties, Janet Davis

Electronic Theses and Dissertations

Performance measurement has been adopted and implemented in the private sector as a tool to measure and improve performance. Performance measurement is relatively new to the public sector, yet counties could benefit from establishing performance measures. This study uses the 67 Florida counties to compare Human Resource performance measures to county efficiency measures through path analysis to assess the contribution compensation and recruitment practices have on county efficiency measures of fiscal, process and technical efficiencies. It includes county contextual variables in the models. The data was collected via professional publications and organizations, survey and personal contacts and entered into a …

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Experimental Analysis Of The Hydrogen Sulfide Absortion Phenomena In Brine/Oil Mixtures As A Function Of System Pressure And H2s, Luis Zea Jan 2008

Experimental Analysis Of The Hydrogen Sulfide Absortion Phenomena In Brine/Oil Mixtures As A Function Of System Pressure And H2s, Luis Zea

Electronic Theses and Dissertations

In underground oil reservoirs, Hydrogen sulfide is usually found coexisting with the oil due to bacteria reduction over a long period of time. The amount of H2S in the oil varies from place to place around the globe. When the oil extraction process begins, the presence of Hydrogen sulfide becomes noticeable as drilling tools, piping and other equipment suffer from sulfide stress cracking, electrochemical corrosion and corrosion fatigue. For this reason, the oil industry invests millions of dollars per year trying to find better ways to reduce the amount of H2S in oil. An important part of the current investigations …

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The Acute Toxicity Of Ground Recycled Automobile Tires On Aquatic Life With Model Species P. Promelas, Trillian Baldassari Jan 2008

The Acute Toxicity Of Ground Recycled Automobile Tires On Aquatic Life With Model Species P. Promelas, Trillian Baldassari

Electronic Theses and Dissertations

Used tires have the potential for becoming popular in pollution control media used in stormwater applications including pervious pavement sub bases, green roof growth media, and upflow filters. Using tire crumb to decrease nutrients can minimize impacts on ecology while reducing the human footprint left by used tires. However, if tire crumb is not examined for toxicity, the ecological balance could unknowingly be disrupted. This research tested the acute toxicity of tire crumb in aquatic systems by finding the Lethal Concentration for 50% kill (LC50). Using an extreme tire crumb load, P. promelas (fathead minnow) were exposed to leachates created …

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Metadata And Data Management In High Performance File And Storage Systems, Peng Gu Jan 2008

Metadata And Data Management In High Performance File And Storage Systems, Peng Gu

Electronic Theses and Dissertations

With the advent of emerging "e-Science" applications, today's scientific research increasingly relies on petascale-and-beyond computing over large data sets of the same magnitude. While the computational power of supercomputers has recently entered the era of petascale, the performance of their storage system is far lagged behind by many orders of magnitude. This places an imperative demand on revolutionizing their underlying I/O systems, on which the management of both metadata and data is deemed to have significant performance implications. Prefetching/caching and data locality awareness optimizations, as conventional and effective management techniques for metadata and data I/O performance enhancement, still play their …

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Data Communication With A Nano-Satellite Using Satellite Personal Communication Networks (S-Pcns), Khudeja Khan Jan 2008

Data Communication With A Nano-Satellite Using Satellite Personal Communication Networks (S-Pcns), Khudeja Khan

Electronic Theses and Dissertations

Satellites typically communicate with locations on the ground to receive commands and send data back. Establishing reliable communications generally requires dedicated ground stations, which in turn require hardware and expertise. Developers of nano-satellites, however, may not have the expertise or resources necessary for establishing a dedicated ground station. Therefore, the use of an existing communication system, such as the Satellite Personal Communication Networks (S-PCNs), is attractive. Another shortcoming of the fixed ground stations, already available, is that they are normally only able to communicate with Low Earth Orbit (LEO) nano-satellites four times per day (two10-minute windows separated by 90 minutes, …

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Reducing Effluent Phosphorus And Nitrogen Concentrations From A Stormwater Detention Pond Using A Chamber Upflow Filter And Skim, Patrick Ryan Jan 2008

Reducing Effluent Phosphorus And Nitrogen Concentrations From A Stormwater Detention Pond Using A Chamber Upflow Filter And Skim, Patrick Ryan

Electronic Theses and Dissertations

Stormwater runoff is a known pollutant source capable of causing surface water degradation, especially in highly populated areas such as Central Florida. Wet detention ponds manage this stormwater, but most of the ponds do not remove enough nutrients, specifically nitrogen and phosphorus, to meet TMDL regulations. This research provides a possible addition to a detention pond in Seminole County, Florida using a Chamber Upflow Filter and Skimmer (CUFS), which can increase the removal of phosphorus and nitrogen by the system. Water enters the system through the skimmer, which floats on the surface of the detention pond. It travels from the …

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A Surrogate Measure Of Customer Satisfaction In The Manufacture Of Printed Wiring Boards, Adam Y. Maamoun Jan 2008

A Surrogate Measure Of Customer Satisfaction In The Manufacture Of Printed Wiring Boards, Adam Y. Maamoun

Electronic Theses and Dissertations

The objective of this research is to determine and develop a model that is capable of accurately measuring customer satisfaction for different industries and in particularly for the Printed Wiring Boards (PWB) Manufacturers. The new model will incorporate data not being collected or utilized by the survey method of determining customer satisfaction. The method used is a weighted average of satisfaction among several researched categories with percentages that accurately represent the relative importance of multiple facets of the PWB manufacturers customer satisfaction. A very common term in quality assurance is that "What is not measured accurately can not be evaluated …

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