Digital Commons Network^™

Measuring Student Growth In K–12 Schools Using Item Response Theory Within Structural Equation Models, Kenneth Lee Thompson

Dissertations

The use of test-based accountability has expanded beyond measurements of school effectiveness to include measurements of teacher effectiveness. However, whereas the use of test-based accountability has expanded, the understanding of the statistical methodologies used in accountability systems has not kept pace. Currently, Student Growth Percentiles and value-added modeling are the most prevalent methodologies for estimating annual student growth. Each of these methodologies is regression-based and relies on scale scores from standardized assessments. Given the prevalence of Item Response Theory in statewide assessment programs, these scale scores often result from Item Response Theory scaling practices. Grounded in earlier work of Brockman …

Computerized Behavioral Skills Training, Selection-Based Instruction, Lag Reinforcement Schedules, And The Emergence Of Topography-Based Responses To Interview Questions, John O'Neill

Dissertations

This investigation evaluated a computerized behavioral skills training package for teaching responses to interview skills by adolescents and young adults with learning disabilities. The package consisted of instructional videos, video-modeling, rehearsal, feedback, and selection-based instruction. Experiment 1 replicated and extended recent research which has suggested that a selection-based protocol operating on a lag schedule of reinforcement is an effective and efficient method for teaching responses to interview questions (O’Neill, Blowers, Henson, & Rehfeldt, 2015; O’Neill & Rehfeldt, 2014). The purpose was to address some of the limitations of these studies while testing the limits of the selection-based protocol in promoting …

Picolinyl-Assisted Approaches To Stereocontrolled Glycosylation, Jagodige Prithika Yasomanee

Dissertations

Although carbohydrates are the most abundant molecules on Earth, our current knowledge of these fascinating natural compounds is still limited. Some aspects that are already known include the carbohydrate involvement in damaging cellular processes such as bacterial and viral infections, development of tumors, metastasis, septic shock, etc. Consequently the development of effective methods for the synthesis, isolation, analysis, and investigation of complex carbohydrates has become critical in all areas of glycoscience. Among various focus areas, stereocontrolled glycosylation has emerged as a topic of particular importance. Yet, it remains a remarkable challenge to chemists because a new chirality center is formed …

Understanding Mechanistic Details Of Neuroinflammatory Pathways Stimulated By The Alzheimer's Disease Amyloid-Beta Protein, Shana Usery

Dissertations

Alzheimer’s disease (AD) is characterized by neuroinflammation. Senile plaques composed of aggregated amyloid-β protein (Aβ) are found in AD patients’ brains. The Aβ is formed by the proteolytic cleavage of the amyloid precursor protein (APP) resulting in Aβ fragments that are 39-42 amino acids in length. The two most common peptides are Aβ(1-40) and Aβ(1-42), which differ by two amino acids, isoleucine and alanine. Within the brain of AD patients, Aβ monomer self-assembles to form several aggregate morphologies, including oligomers, protofibrils, and fibrils. Activated microglial cells and associated secreted proinflammatory cytokines surround these plaques producing a localized inflammatory environment in …

The Schoolyard As An Outdoor Classroom: Learning Through Experience, Jason W. Spray

Dissertations

When teaching ecology concepts, teachers often overlook utilizing the schoolyard as an outdoor classroom. This study examined the use of the schoolyard to teach ecology concepts in order to improve environmental knowledge and attitudes among fifth grade African-American students. The “Nature Unleashed” curriculum was the primary source for the lessons. This curriculum encompasses experiential learning and place-based education. The curriculum, taught over a six-week period, utilized hands-on activities inside and outside of the classroom. There were 248 fifth grade African-American students (N = 248) who participated in the research study. Students responded to a pre- and post-assessment to measure knowledge …

Educational Entrepreneurship As Reform Strategy For St. Louis Public Schools From 2003 To 2009, Nathalie Henderson

Dissertations

“Educational Entrepreneurship” has increasingly become a buzz word, theory of change, silver bullet for countless so called education reformers who look to fix urban education by allowing alternative routes to teacher certification, public- private partnerships and the creation of charter schools. I have chosen autoethnography to highlight critical events from my own professional experience to illustrate the effects of educational entrepreneurship on The St. Louis Public Schools. This study used critical race theory as a lens to probe my narrative not only as a participant in educational entrepreneurship but also as Black, female educator. The end result is a reflective …

The Effect Of A Student Success Seminar On Student Retention At A Regional University, Cindy L. Clemson

Dissertations

With approximately half of all students who enter colleges and universities graduating, the problem of student attrition continues to challenge higher education officials. Decades of research studies have been completed on the causes of student persistence and retention, but significant changes have not occurred to increase those numbers. This study attempted to integrate current research with a practical application to increase retention of first-year students. A first-year seminar, known as a student success seminar, was created at the university to teach advanced academic behaviors to incoming freshmen. This study involved a program evaluation of the new seminar as the independent …

An Analysis Of The Comparison Between Classroom Grades Earned With A Standards- Based Grading System And Grade-Level Assessment Scores As Measured By The Missouri Assessment Program, Gary L. Greene

Dissertations

This study was designed to examine the ability of traditional and standards-based grading practices to predict student performance on the Missouri Assessment Program (MAP) Grade-Level Assessments at the middle school level. This study also explored the perceptions Missouri middle school teachers and administrators had concerning the use of standards-based grading and identified obstacles educators faced during and after its implementation. The research was conducted in phases to observe two sets of data. Phase One involved the collection and analysis of quantitative data from two schools in Missouri that use standards-based grading in the seventh and eighth grades and two schools …

The Impact Of Trio Student Support Services At A Midwestern Institution, Tajuan Rakeem Wilson

Dissertations

First-generation, low-income, and disabled college students are an increasing population (Tinto, 2012). TRIO Student Support Services (SSS) is an academic support program funded by the U.S. Department of Education that seeks to support this demographic to overcome challenges and thrive while in college (Coffman, 2011). Utilizing a mixed methods approach, the goal of this study was to examine the student success outcomes of retention and grade point average of TRIO SSS students compared to students who are similarly qualified but not being served by TRIO SSS at a Midwestern, large, public, four-year institution. In addition, TRIO SSS seniors were interviewed …

Perceived Barriers And Solutions: Engineering Design Implementation, Ken L. Turner

Dissertations

Engineering Design, part of the practices dimension of the Next Generation Science Standards, NGSS, is widely recognized as the most challenging piece for teachers to implement. It involves practices that teachers are unfamiliar with, have not taught before, have not been taught, and have not experienced as a student. This manuscript documents a mixed-methods survey of over 200 K-12 teachers on their perceptions of both the greatest barriers to implementation of Engineering Design, and those items that will be of most value as a solution to those barriers. A systems approach to understanding Engineering Design was utilized; with data collection …

Fast And Sensitive Genome-Hashing Software And Its Application In Using Ngs As A Detection Agent For Bacterial Presence In Oral Metagenomic Samples, Paul Michael Gontarz

Dissertations

Next generation sequencing has increased the throughput of sequenced DNA into the range of billions of nucleotides sequenced per day. With the increased speed of DNA sequencing and the short length of reads produced by next generation sequencers, a significant challenge has been created in quickly and accurately assembling the hundreds of millions of short reads created by modern sequencing instruments into their full genomic sequences. With the increase in throughput in next generation sequencing and the decrease in time and cost to perform DNA sequencing, novel applications for DNA sequencing are being considered. Among them is a methodology by …

Exploration Of Stimulus Current Energy Reduction And Bifurcation Dynamics In Conductance-Based Neuron Models Using Optimal Control Theory, Michael E. Ellinger

Dissertations

Hodgkin-Huxley type conductance-based models can simulate the effect of time-varying injected stimulus currents on the neuron membrane voltage. The dynamics simulated by these model types enables investigation of the biophysical basis of neuronal activity which is fundamental to higher level function. Broadened understanding the basis of nervous system function could lead to development of effective treatment for related diseases, disorders, and the effects of trauma. In this dissertation, optimal control is used with conductance-based neuron models to develop a "Reduced Energy Input Stimulus Discovery Method." Within the method, an objective function balances two competing criteria: tracking a reference membrane voltage …

Simplifying The Complexity Of Supplementary Pensions: Suggestions For Member-Centred Reforms, Mary Broderick

Dissertations

Pension coverage among workers in Ireland is low with only an estimated 41.3% of private sector workers contributing to a supplementary pension. In addition, the system for workplace pensions is considered by many to be unnecessarily complex and beyond the understanding of many workers, without additional advice.

This research aims to look at some areas of pensions that are particularly complex, from a members point of view, and to make suggestions as to how the system could be more member-centred. The research will look specifically at three areas; State support given for pension saving, the structure of pension provision and …

Perceptions Of Non-Traditional Programs Within Missouri School Districts, Cherie L. Norman

Dissertations

The purpose of this study was to analyze perceptions of Missouri public school administrators regarding twenty-first century learning skills in choice and innovative schools, and to report the research-based best practices those schools are using with students. For this study, qualitative data were collected through a questionnaire and then coded for analysis (Fraenkel et. al, 2014). The questionnaire, used to elicit information from 10 administrators of Missouri public schools housing a choice or innovation program, was the anchor of the research design. The results of this study indicated choice and innovative schools are incorporating a combination of current research-based practices …

Empowerment, Ownership, And Authentic Professional Learning: Meeting The Needs Of Our Teachers Through Career Pathways, Amber Field

Dissertations

This policy advocacy paper, the third part of a series on professional development (PD) in the charter management organization KIPP NYC, argues for the development and implementation of a Teacher Career Pathways structure. The recommended policy change would recognize senior and master teachers who plan to remain in the classroom for the longevity of their careers. This structure allows teachers to design their own professional development plans, provides them with a stipend to participate in high-quality PD, and expands their reach to other teachers who will in turn benefit from the former’s instructional leadership. This advocacy document analyzes the educational, …

Utilizing A Systematic Approach To Problem-Solving In The Elementary School Setting: A Program Evaluation Project, Edie Sohigian

Dissertations

Sunnyside Elementary School, an anonymous name, had a high number of discipline referrals. The purpose of this inquiry was to develop and follow an action plan to reduce behavior issues. Using both qualitative and quantitative methods of inquiry, I collected discipline and academic achievement data as well as survey data to analyze the impact of the Eight-Step Problem-Solving Process on the rate of discipline referrals. Although the overall number of referrals increased, other significant findings were determined. The leadership team and faculty must be vested in the action plan as a priority in order to achieve positive results. It was …

Exploring The “Mojo” Of Presidential Awards For Excellence In Mathematics And Science Teaching (Paemst) Recipients, James W. O'Malley

Dissertations

The purpose of this dissertation was to determine how extraordinary science teachers develop their teaching mojo. The teachers investigated were recipients of the prestigious Presidential Award for Excellence in Math and Science Teaching (PAEMST). This investigation focuses specifically on science instruction. The method used for this investigation was individual and group interviews conducted with eight PAEMST recipients. Five themes emerged from these interviews: 1. Science is a natural motivator for learning; 2. Students need to be scientifically literate citizens; 3. A critical “trigger event” propelled each of these teachers towards great science instruction; 4. Each sought out and engaged in …

Edge Colorings Of Graphs And Their Applications, Daniel Johnston

Dissertations

Edge colorings have appeared in a variety of contexts in graph theory. In this work, we study problems occurring in three separate settings of edge colorings.

For more than a quarter century, edge colorings have been studied that induce vertex colorings in some manner. One research topic we investigate concerns edge colorings belonging to this class of problems. By a twin edge coloring of a graph G is meant a proper edge coloring of G whose colors come from the integers modulo k that induce a proper vertex coloring in which the color of a vertex is the sum of …

Analysis Of Vibroacoustic Properties Of Dimpled Beams Using A Boundary Value Model, Kyle R. Myers

Dissertations

Attention has been given recently to the use of dimples as a means of passively altering the vibroacoustic properties of structures. Because of their geometric complexity, previous studies have modeled dimpled structures using the finite element method. However, the dynamics of dimpled structures are not completely understood. The goal of this study is to provide a better understanding of these structures through the development of a boundary value model (BVM) using Hamilton's Variational Principle. The focus of this study is on dimpled beams, which represent the simplest form of a dimpled structure.

A general model of a beam with N …

Structural Controls On The Distribution Of Groundwater In Southern Sinai, Egypt: Constraints From Geophysical And Remote Sensing Observations, Lamees Mohamed

Dissertations

An integrated (Very Low Frequency [VLF] electromagnetic, magnetic, remote sensing, field, and Geographic Information System [GIS]) study was conducted over the basement complex in Southern Sinai (Feiran watershed) for a better understanding of the structural controls on the groundwater flow. The increase in satellite-based radar backscattering values following a large precipitation event (date: 17, 18 Jan 2010; amount: 34 mm) was used to identify water-bearing features, here interpreted as preferred pathways for surface water infiltration. Findings include: (1) The distribution of the water bearing features (conductive features) correspond to that of fractures, faults, shear zones, dike swarms, and wadi networks; …

Electron Transmission Through Micrometer Sized Funnelshaped Tapered Glass Capillaries And Electron Micro-Beam Production, Samanthi Jayamini Wickramarachchi

Dissertations

The prime motivation of this work is to understand the fundamental transmission process of an electron beam through a funnel-shaped capillary taking into account its shape together with the energy, angular and time dependence of the transmitted electrons produce a microsized electron beam. The utilized capillaries had inlet/outlet diameters of 800/16 μm, 800/100 μm and lengths of 35 mm. Considerable transmission of 800 and 1000 eV electrons for tilt angles up to 1.5^o and only small transmission for 500 eV electrons was observed for the capillary with the smaller outlet diameter of 16 μm. Incident electrons with energies of …

Secondary Mathematics Teachers’ Attitudes And Beliefs Toward Statistics: Developing An Initial Profile, Christina M. Zumbrun

Dissertations

Over the last several decades, mathematics education researchers have given increased attention to students’ and teachers’ attitudes and beliefs toward mathematics and statistics, but no work has been done that examines practicing secondary mathematics teachers’ (SMTs’) attitudes and beliefs towards statistics in light of the GAISE framework and the Common Core State Standards for Mathematics (CCSSM). This study begins to address this gap in the research by creating the Teacher Attitude and Beliefs toward Statistics Survey (TABSS), a synthesis of items taken from the Survey of Attitudes Toward Statistics (Schau, 2003), the Statistics Course Attitude Scale and newly developed items …

A Study Of Conceptual And Language Issues Surrounding Weight, Weightlessness, And Free Fall: Textbook Analysis, Instructional Design, And Assessment, Rex Taibu

Dissertations

Science education is an interdisciplinary field that has developed from and continues to rely on research in the fields of cognitive science, philosophy, psychology, sociology and history. This clearly reflects that learning and teaching can be studied from multiple perspectives. Despite these wide ranging roots, contemporary science education by and large is not informed by the work of research on linguistics, and in particular, the role of language in mediating conceptual understanding. The term “weight” has multiple meanings in both science and everyday language, and this unfortunately creates inherent difficulties for teaching and learning. The present study addresses a need …

Implementation Of Traditional Printing Techniques For The Development Of Flexible Printed Sensors, Sai Guruva Reddy Avuthu

Dissertations

Printed electronics has gained a remarkable interest over the past decade for the fabrication of cost efficient electronic devices, with a major focus on the development of flexible sensors. This dissertation focuses on the fabrication of flexible sensors using traditional printing processes such as screen, inkjet and gravure printing.

A flexible organic thin film transistor (OTFT) was successfully fabricated on a polyethylene terephthalate (PET) substrate and employed as a humidity sensor. Aluminum gate electrode was thermally evaporated on PET and UV clear dielectric layer was spin coated. Source and drain silver interdigitated electrodes were screen printed. 6,13-bis(triisopropylsilylethynyl) pentacene, a humidity …

Regulation Of Glial Cell Line-Derived Neurotrophic Factor (Gdnf) Production In Voluntary And Involuntary Muscle, John-Mary Vianney

Dissertations

Glia cell line-derived neurotrophic factor (GDNF) is a survival factor for subpopulations of neurons, including somatic and autonomic motor neurons. These neurons depend, in part, on GDNF that is synthesized and secreted by their target tissues. It has been shown that a number of tissues in the periphery express GDNF and these target tissues differ in their composition, function, and in the case of different muscle cell types, their contractile characteristics. Whether the processes regulating GDNF production in these different tissues is similar or different is poorly understood. The broad goal of this study is to examine factors that normally …

Control Strategies For Improving The Performance Of Heaving Wave Energy Converters, Mohammed Abdi Jama.

Dissertations

The main objective of this study is to develop control strategies to enhance the performance of single-body heaving wave energy converters (WECs). Maximizing the energy captured from sea waves while respecting the physical and thermal limitations of the WEC is of a paramount importance for any control strategy to be effective. In addition, it is desirable for the controller to be less vulnerable to model uncertainties and external disturbances. A complete wave-to-wire dynamic model has been derived for the heaving WEC. This includes models that describe the system hydrodynamic forces using the linear wave theory and models that describe the …

Protein Domain Linker Prediction: A Direction For Detecting Protein-Protein Interactions, Maad Mohammad Shatnawi

Dissertations

Protein chains are generally long and consist of multiple domains. Domains are the basic elements of protein structures that can exist, evolve, and function independently. The accurate and reliable identification of protein domains and their interactions has very important impacts in several protein research areas. The accurate prediction of protein domains is a fundamental stage in both experimental and computational proteomics. The knowledge of domains is an initial stage of protein tertiary structure prediction which can give insight into the way in which proteins work. The knowledge of domains is also useful in classifying proteins, understanding their structures, functions and …

Searching For Innovation, Creativity And 21st Century Skills: A Case Study Of A Suburban Elementary School District, Robert Alexander Serdar

Dissertations

The purpose of this study was to seek out and identify the traits, attitudes and characteristics of innovative, creative and highly effective teachers within a suburban elementary school district. Participants included five elementary teachers who were identified by their colleagues as being exceptionally innovative, creative and fostering 21^st Century Skills. The research method for this qualitative case study consisted of teacher interviews, student interviews, and multiple classroom observations by the researcher. From this, seven themes, or practices, of highly innovative, creative teachers of 21^st Century Skills emerged: (1) See the Teacher as Lead Learner (2) Encourage Learner Reflection …

Continuous Monitoring Of Enterprise Risks: A Delphi Feasibility Study, Robert Baksa

Dissertations

A constantly evolving regulatory environment, increasing market pressure to improve operations, and rapidly changing business conditions are creating the need for ongoing assurance that organizational risks are continually and adequately mitigated. Enterprises are perpetually exposed to fraud, poor decision making and/or other inefficiencies that can lead to significant financial loss and/or increased levels of operating risk. Increasingly, Information Systems are being harnessed to reinvent the risk management process. One promising technology is Continuous Auditing, which seeks to transform the audit process from periodic reviews of a few transactions to a continuous review of all transactions. However, the highly integrated, rapidly …

Methods For Two-Sample Comparisons From Censored Time-To-Event Data, Nubyra Ahmed

Dissertations

In the analysis of censored survival data, it is frequently of interest to determine the efficacy of a treatment or new method over a control or existing method. For this purpose, one may report estimates of the two survival functions or, more specifically, their difference, accompanied by simultaneous confidence bands (SCBs). Alternatively, or in addition, one may conduct hypothesis testing for the difference of the two survival functions.

The first project exploits two bootstrap methods to develop new Wald-type SCBs for the difference of survival functions. The censored data bootstrap is employed to obtain nonparametric SCBs for the difference of …