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A Monte Carlo Study Of The Optimal Rank Order Relationship With Criterion Scores, Hongyan Cui

Dissertations

Appropriate scoring methods for tests should be based on theories of the construct domains of such tests (Messick, 1989). This is called structural fidelity (Loevinger, 1957), a necessary but not sufficient condition for construct validity (Keith & Kranzler, 1999). A situation reaction test (SRT) consists of items with alternatives to be ranked according to subjects’ best judgment. Traditional rank scoring methods assume unidimensionality, implying one scoring key for each item – a single external criterion. This is not appropriate when items elicit multidimensional responses determined by subjects’ best judgments based on possibly multiple internal criteria. The purpose of this study …

The Effect Of Instruction In Alternative Solutions On American Ninth-Grade Algebra I Students' Problem Solving Performance, Erin Elizabeth Sagaskie

Dissertations

The purpose of this study was to investigate the effect of the use of an Alternative-Solution Worksheet (ASW) on American ninth-grade students' problem solving performance, and to determine the extent to which instruction in alternative solutions promotes "look back" strategies. "Look back" strategies are based on Polya's (1973) problem solving steps, and they are an examination of what was done or learned previously. The ASW was designed to encourage students to utilize "look back" strategies by generating alternative solutions to the problems. This mixed-methods study was conducted with two existing groups of ninth-grade Algebra I students. An experimental group of …

Teachers' Making Meaning Of Reduced Class Sizes: A Phenomenology, Brenda Ludy Snow

Dissertations

It is every teacher’s dream to have a classroom full of students who come to class each and every day highly motivated to learn. However, in all reality teachers know that this is not always the case. Researchers continue to search for reasonable alternatives to improve students’ learning. As children enter school a good start is imperative if they are to succeed in school, (Achilles & Finn, 2000). Class size reduction is a strong alternative and should be considered as part of a reasonable plan for student learning.

For this qualitative study, I examined and described the experiences of 12 …

Computational And Experimental Investigation Into Yield Behavior And Cure Rate Dependence Of Thermoset Polymers, Christopher Harold Childers

Dissertations

This dissertation is broken down into two primary sections: firstly, the development and improvement of molecular dynamics simulations of thermoset matrix polymers including their use in understanding molecular response to applied strain deformation and secondly, the discernment of a cure heating ramp rate dependence of the final molecular and macro-molecular properties of thermoset matrix polymer.

The molecular dynamics section will discuss the development of molecular dynamics simulations of thermoset epoxy/amine matrix polymers, and the implementation of this work to determine the underlying molecular level events that cause thermoset matrix polymer yield. It will report a novel method for the determination …

"This Masterpiece Of Nature:" An Ecocritical Study Of Joseph Conrad's Fiction, Sonja Luther

Dissertations

This dissertation employs an ecocritical approach to explore the relationship between humans and nature in the works of Joseph Conrad. In his fiction, Conrad draws an impression of nature that was unusual for its time because of its complexity. Nature is not just simple scenery or a stage set in Conrad’s fiction; it plays a major role in his characters’ regression, which develops parallel to their alienation from nature. This dissertation explores the origins of man’s alienation from nature in Conrad’s work, particularly his early fiction, and the implications for society if such alienation continues.

Chapter I serves as an …

Molecular Probes For The Detection Of Zn2+ And Fe3+ Ions, Erendra Manandhar

Dissertations

A number of molecular probes have been designed and synthesized for the detection of Zn²⁺ and Fe³⁺ ions. Two types of functional groups have been incorporated into the molecular scaffolds to utilize different fluorescent mechanisms. The first class of receptors contains a pyrene moiety. These molecular probes use the excimer mechanism for the detection of Zn²⁺ ion. The probes work well in an organic solvent with a detection limit of 20 nM (one ppb). Alternatives are made to make them water soluble, but this proved to be difficult. An interesting ion-induced self-assembly system will also be discussed. …

Hybrid Meshless Method For Numerical Solution Of Partial Differential Equations, Jeanette Marie Monroe

Dissertations

A meshless method for solving partial differential equations (PDEs) which combines the method of fundamental solutions (MFS) and the method of particular solutions (MPS) is formulated and tested. The hybrid method finds a numerical approximation by solving only one system of equations as opposed to the two-stage method of fundamental solutions and method of particular solutions. This new approach, denoted MFS-MPS, one-stage MFS-MPS, or hybrid method, can be applied to a wide variety of PDEs including PDEs with variable coefficients. The MFS-MPS can simplify Helmholtz-type differential operators to Laplacian-type differential operators providing flexibility and simplification to calculating particular solutions and …

Effective Instructional Strategies Utilized In Successful And High Performing Secondary Schools In The Southern Region Of Mississippi, Jeanifer Lynn Pearson

Dissertations

The schools in the United States have implemented measures intended to close the achievement gap for over fifty years (Solomon, 2009). The mandates handed down by the federal government cannot be altered. Therefore, schools are required to determine specific measures that increase student academic success. Prior research has demonstrated that schools can be successful if effective leadership at the district, school, and classroom level was present (Gregory, 2003; Johnson, Livingston, & Schwartz, 2000). At the classroom level, it was the leadership of the individual teacher to determine the creation of innovative techniques aimed at academic success of all students (Farr …

Utilization Of Aqueous Raft Prepared Copolymers To Improve Anticancer Drug Efficacy, Andrew Christopher Holley

Dissertations

The advent of controlled radical polymerization (CRP) techniques, along with advancements in facile conjugation chemistry, now allow synthetic tailoring of precise, polymeric architectures necessary for drug/gene delivery. Reversible addition- fragmentation chain transfer (RAFT) polymerization and its aqueous counterpart (aRAFT) afford quantitative control over key synthetic parameters including block length, microstructure, and placement of structo-pendent and structo-terminal functionality for conjugation of active agents and targeting moieties. The relevance of water-soluble and amphiphilic (co)polymers synthesized by RAFT for in vitro delivery of therapeutics in biological fluids is an especially attractive feature. In many cases, polymerization, binding, conjugation, …

Utilization-Focused Evaluation Of A School District Leadership Pipeline, Whitnee Shaffer

Dissertations

The Future Leaders Academy is a program for aspiring leaders that is directed by the Hillsborough County Public Schools Leadership Development Department. The research in this paper demonstrates the views of the cadre members that have completed the program. The research provides data and information as to their responses to the effectiveness of the program and whether it was beneficial to be a part of this leadership program. The following details the rationale for the research and the results of the surveys from the cadre members.

Increasing Student Achievement In English Language Learners Through Dual Language: A Policy Advocacy Document, Melissa Durrance

Dissertations

English language learners (ELL) represent the fastest growing population of learners in our schools. A substantial and continuing education achievement gap exists between ELLs and English speaking students and an alarmingly disproportionate number of ELL students contribute to the dropout rate. As educators, it is imperative that we provide educational programs to help reduce the achievement gap. All students deserve an education that will enable them to be productive citizens and that will provide them with the skills needed to enter either a career or an institution of continuing education upon graduation. As a solution to the increasing dropout rate …

The Game Of Chess: A Conduit To Increase Student Academic Achievement In Pinellas County: A Policy Advocacy Document, Douglas Williams

Dissertations

The research about chess and education is very compelling. The usefulness of chess as an educational activity is particularly valid among children whose minds are entering the cognitive phase of abstract thinking. However, chess is useful among all age groups. Chess has been shown to improve cognitive abilities among educationally low-functioning students, and it has been shown to help students academically when traditional methods have failed to produce the desired outcome. Most people think of chess as a game, and I think the time has come for educators to think about chess in a different light. It is a game, …

Applying Social Return On Investment Analysis To A Large Central Florida County Public School District, David F. Lewis

Dissertations

All social organizations are faced with basic questions pertaining to the value they add to their community and how effectively and efficiently they do so. These questions are increasingly being directed to public schools and school districts as well relative to the various programming they offer and the results they achieve. By completing all aspects of a Social Return on Investment (SROI) analysis with fidelity, I have established a statistically reliable baseline SROI ratio based on a comparison of inputs (revenues) to outputs (outcomes). This baseline ratio serves as the foundation for subsequent change initiatives that will lead to district-wide …

Tomographic Image Reconstruction: Implementation, Optimization And Comparison In Digital Breast Tomosynthesis, Shiyu Xu

Dissertations

Conventional 2D mammography was the most effective approach to detecting early stage breast cancer in the past decades of years. Tomosynthetic breast imaging is a potentially more valuable 3D technique for breast cancer detection. The limitations of current tomosynthesis systems include a longer scanning time than a conventional digital X-ray modality and a low spatial resolution due to the movement of the single X-ray source. Dr.Otto Zhou's group proposed the concept of stationary digital breast tomosynthesis (s-DBT) using a Carbon Nano-Tube (CNT) based X-ray source array. Instead of mechanically moving a single X-ray tube, s-DBT applies a stationary X-ray source …

Making Telework Work: The Effect Of Telecommuting Intensity On Employee Work Outcomes, Maria Spilker

Dissertations

The current study examined the effects of telecommuting intensity – the amount of scheduled time that employees spend doing work away from the central work location – on employee outcomes. Results of this study provided insight into how telecommuting intensity relates to turnover intent and supervisor-rated performance through mediating mechanisms of work-life conflict, professional isolation, and Leader-Member Exchange. An online survey instrument was created, and an invitation to participate was sent by e-mail to telecommuters. Each participant was asked to provide an email address for his or her direct supervisor. The supervisor was asked to complete a shortened version of …

A Quantitative Study Of Educational Poverty, School Location, And Student Achievement Measured By The Program For International Student Assessment (Pisa), Brett Barger

Dissertations

The performance of the United States’ students on international tests remains an ongoing source of concern, division, and anxiety for government, educational, and business leaders, teachers (and their unions), as well as the general public. These selfsame test results have been used as evidence to support diametrically opposed political and educational strategy and policy for decades. All too often the performance of students is discussed with a single test score number that is used to represent the entirety of the education system’s students without accounting for geographical, demographic, or socioeconomic differences among the student test takers. The contributing factors of …

Non-Restrictive Environment After Age 21: Program Placement For Young Adults With Severe Developmental Disabilities, Deborah Dirisio

Dissertations

For students with significant disabilities, the process of transitioning from their secondary school setting to their post-secondary setting includes the exploration of potential adult settings. This paper explored the perspectives of secondary school personnel, as well as the viewpoints of personnel from St. Louis area post-secondary programs, as to the characteristics which determine adult program placement. State agencies that facilitate Person Centered Plans were also interviewed regarding viewpoints as to how secondary students with significant disabilities could seek and secure their most non-restrictive adult program placements. Research questions included: (1) How do the Missouri Alternative Frameworks utilized in secondary programming …

A Complex Social Network Analyses Of Online Finanical Communties In Times Of Geopolitcal Military And Terrorist Events, James Usher

Dissertations

Given the advances in technology the field of social network analysis has very much hit the forefront in recent years. The information age harnesses the use of social network analysis for multiple industries and for solving complex problems. Social network analysis is an important tool in the world of the military and counter intelligence, whether it’s the capture of Osama Bin Laden or uncovering hidden Al Qaeda terrorist networks, the world around us is built on networks, be that hidden or otherwise. Online social networks give new information in the world of intelligence agencies similarly online financial communities such as …

A Delphi Study: Teachers’ Perceptions Of Benefits, Prerequisites, Facilitators, And Barriers Of Peer Observation For Professional Learning In Secondary Public Schools, Melissa R. Bazanos

Dissertations

A Delphi Study: Teachers’ Perceptions of Benefits, Prerequisites, Facilitators, and Barriers of Peer Observation for Professional Learning in Secondary Public Schools

Purpose: The purpose of this study was to explore secondary-school teachers’ perceptions about the instructional and cultural benefits of engaging in peer observations for professional learning in secondary schools. This study also sought to clarify the prerequisites, facilitators, and barriers to implementing peer observations as perceived by secondary-school teachers.

Methodology: The Delphi method was utilized in order to gather perceptual data from an expert panel of secondary-school teachers that have engaged in peer observations at various schools in Riverside …

A Study Of Alternative Education Programs In The State Of Missouri, Ronald Joshua Ladd

Dissertations

The focus of this study was to examine the characteristics of alternative programs in the state of Missouri and to determine whether a statistical difference in the persistence to graduation rate existed between the two variations of programs. When identifying the characteristics, several commonalities emerged. These commonalities could be the focus of future studies to determine a list of best-practices among alternative programs. When focusing on the statistical element of this study, the two programs in question were revolving door and one-way programs. For the purpose of this study, a revolving door style program was defined as one that assesses …

The Effect Of An Integrated Music Curriculum On Reading Achievement Outcomes Of Kindergarten Students, Tracy St. Clair

Dissertations

At the time of this study, school districts in the United States faced challenges relative to educational accountability, especially in the areas of language arts and mathematics. Research suggested that music held the potential to bolster student engagement and academic achievement to improve reading outcomes for students. An integrated music curriculum was designed and implemented by the researcher to support reading achievement in a Midwestern, suburban elementary school. The purpose of this counterbalanced research design was to examine the effect of an integrated music curriculum upon the reading achievement of kindergarten students. The lesson framework included brain-based and active listening …

Discrepancies In Discipline Of Middle School Students By Gender: A Comparison Of Principal Candidates’ Responses To Vignettes, And Teacher Perceptions, Jill Lukefahr-Farrar

Dissertations

Discipline in schools exists so that there are guidelines to ensure safety and learning. Administrators and teachers give students consequences based upon discipline guidelines made by the school districts’ board of education. The discipline administered can be subjective. In a suburban mid-western school district, alarming trends in the amount of discipline referrals of male students both in the primary investigator’s middle school and in the other middle schools within the researched district were recognized. The purpose of this mixed methods study is to analyze and understand if gender discrepancies exist in discipline for middle school students among aspiring administrators, practicing …

Exploring The Relationship Between Student Survey Results And Evaluator Observation Results In The Teacher Evaluation Process, Sandra Eileen Ford

Dissertations

Researchers and practitioners have indicated that current teacher evaluation systems do not distinguish differences between teachers. In an attempt to redesign the current system and create a more effective system, legislative mandates required the use of multiple measures in the teacher evaluation systems of states receiving federal money. As a result student perception surveys became one of the multiple measures being considered for use in the teacher evaluation process. In this study, student perception survey results and certified evaluator observation results were analyzed to determine if there was a significant linear relationship between students’ and evaluators’ perceptions of effective teaching. …

Deciding On Science: An Analysis Of Higher Education Science Student Major Choice Criteria, Stephen Wilson White

Dissertations

The number of college students choosing to major in science, technology, engineering, and math (STEM) in the United States affects the size and quality of the American workforce (Winters, 2009). The number of graduates in these academic fields has been on the decline in the United States since the 1960s, which, according to Lips and McNeil (2009), has resulted in a diminished ability of the United States to compete in science and engineering on the world stage. The purpose of this research was to learn why students chose a STEM major and determine what decision criteria influenced this decision. According …

Using Psychosocial Development Theory And Personality Typology In Identifying At-Risk Characteristics Of College Honors Students, Dennis Lark Lancaster

Dissertations

While substantiating the effectiveness of honors programs to increase learning among the academically gifted, assessment and any associated outcomes should also be effectively used to understand the psychosocial development challenges of these students and, at the same time, increase their learning in and out of the honors environment. Robinson’s (1997) research showed that, saddled with the typical college student’s at-risk characteristics, e.g., first-generation status, low-income, financial limitations, etc., gifted students also face unique adjustment challenges in terms of their social development. These challenges include habits and attitudes associated with and/or resulting from not having to work at their studies in …

Project-Based Learning As A Means For Meeting The Needs Of 21st Century Students In Common Core States, Scott Ragsdale

Dissertations

The call for the reform of public education in the United States of America has come from stakeholders of all kinds. This study compares two seemingly opposing approaches to the reform of public education. The bureaucratic approach is represented by the mass adoption of the Common Core State Standards (CCSS). The grassroots approach is represented by the International Society for Technology in Education Standards for Students (ISTE Standards-S). It was important to identify and analyze an instructional practice with enough potential rigor to meet the demands of both the CCSS and the ISTE Standards-S. The study analyzed the potential ability …

Confidence Bands For Survival Curves Using Model Assisted Cox Regression, Shoubhik Mondal

Dissertations

The goal of this dissertation is to develop informative subject-specific simultaneous confidence bands (SCBs) for survival functions from right censored data. The approach is based on an extension of semiparametric random censorship models (SRCMs) to Cox regression, which produces reliable and more informative SCBs. SRCMs derive their rationale from their ability to utilize parametric ideas within the random censorship environment. Incorporating SRCMs into the existing framework produces more powerful procedures to analyze right censored data. The first part of the project focuses on proposing new estimators of Cox regression parameters and the cumulative baseline hazard function, and deriving their large …

New Directions For Remote Data Integrity Checking Of Cloud Storage, Bo Chen

Dissertations

Cloud storage services allow data owners to outsource their data, and thus reduce their workload and cost in data storage and management. However, most data owners today are still reluctant to outsource their data to the cloud storage providers (CSP), simply because they do not trust the CSPs, and have no confidence that the CSPs will secure their valuable data. This dissertation focuses on Remote Data Checking (RDC), a collection of protocols which can allow a client (data owner) to check the integrity of data outsourced at an untrusted server, and thus to audit whether the server fulfills its contractual …

Efficient Domain Decomposition Algorithms For The Solution Of The Helmholtz Equation, Dawid Midura

Dissertations

The purpose of this thesis is to formulate and investigate new iterative methods for the solution of scattering problems based on the domain decomposition approach. This work is divided into three parts. In the first part, a new domain decomposition method for the perfectly matched layer system of equations is presented. Analysis of a simple model problem shows that the convergence of the new algorithm is guaranteed provided that a non-local, square-root transmission operator is used. For efficiency, in practical simulations such operators need to be localized. Current, state of the art domain decomposition algorithms use the localization technique based …

The Experience Of Reducing Environmental Risks In An Environmental Justice Community, Gabriela Dory

Dissertations

Research on Environmental Justice (EJ) communities has focused on quantitative assessment of environmental hazards and general physical health problems. Little is known about how individuals living in EJ communities perceive their environmental risks and how they reduce environmental risks. The purpose of the study is to explore and describe the perceived environmental risks and the experience of reducing environmental risk among individuals living in an EJ community.

A qualitative and longitudinal design with a descriptive phenomenological method is used to recruit 23 participants living in a known EJ community in the urban area of New Jersey. A total of 43 …