Digital Commons Network^™

Testing The Double-Deficit Hypothesis In Arabic Language Among Emirati Students In Grade-3, Mahmoud Fahid Mohammad Gharaibeh

Dissertations

The purpose of this dissertation was to test the validity of the double-deficit hypothesis as applied to a sample of third-grade Arabic-speaking students in the United Arab Emirates. The double-deficit hypothesis postulates that individuals with a combination of Rapid Automatized Naming (RAN) and Phonological Awareness (PA) deficits will tend to have worse reading ability than individuals with either a RAN deficit, a PA deficit, or no deficit. Thus, the double-deficit hypothesis has been advanced as an explanation of dyslexia. Descriptive statistics were used to describe the essential feature of data in the study, and a correlational study design was applied …

A Novel E-Voting System With Diverse Security Features, Haijun Pan

Dissertations

Internet-based E-voting systems can offer great benefits over traditional voting machines in areas, such as protecting voter and candidate privacy, providing accurate vote counting, preventing voter fraud, and shortening the time of vote counting. This dissertation introduces, establishes and improves Internet-based E-voting systems on various aspects of the voting procedure. In addition, our designs also enable voters to track their votes which is a very important element in any elections.

Our novel Internet-based E-voting system is based on the following realistic assumptions: (1) The election authorities are not 100% trustworthy; (2) The E-voting system itself is not 100% trustworthy; (3) …

Formulation And Dissolution Of Polymer Strip Films For The Delivery Of Poorly Water-Soluble Drug Nanoparticles, Scott Matthew Krull

Dissertations

Polymer films have emerged as a promising platform for delivery of pharmaceutical products in recent years due to simplified processing, greater flexibility, and improved patient compliance over traditional solid dosage forms. However, the large majority of efforts have focused on incorporation of water-soluble drugs. The objective of this dissertation is to explore the robustness and versatility of the strip film platform for delivery of poorly water-soluble drug nanoparticles to ultimately develop a predictive model for drug release from such films.

The robustness of the polymer strip film platform to successfully deliver a variety of poorly water-soluble drug nanoparticles without the …

Machine Learning Based Digital Image Forensics And Steganalysis, Guanshuo Xu

Dissertations

The security and trustworthiness of digital images have become crucial issues due to the simplicity of malicious processing. Therefore, the research on image steganalysis (determining if a given image has secret information hidden inside) and image forensics (determining the origin and authenticity of a given image and revealing the processing history the image has gone through) has become crucial to the digital society.

In this dissertation, the steganalysis and forensics of digital images are treated as pattern classification problems so as to make advanced machine learning (ML) methods applicable. Three topics are covered: (1) architectural design of convolutional neural networks …

Public Perceptions Of The Functions Of Natural And Engineered Infrastructure In Coastal Hazards Mitigation: The Cases Of Two Communities In The Raritan Bayshore, New Jersey, Jaime D. Ewalt Gray

Dissertations

Emerging United States (U.S.) federal policies call for more comprehensive integration of both engineered and natural infrastructure in mitigating coastal hazards. For such policies to be effectively implemented, the mitigation functions of and relationship between natural infrastructure and engineered infrastructure must be understood and their integrated use accepted by affected actors, especially residents living in at-risk coastal communities. Little is known about public perceptions of the functions of engineered and natural infrastructure in coastal hazard mitigation and the interactions between these two types of infrastructure. This study analyzes perceptions based on semi-structured interviews of 14 residents in Laurence Harbor, Middlesex …

Roles Of Cosolvents On Protein Stability, Zhaoqian Su

Dissertations

The function of a protein is determined by its three-dimensional structure which emerges from the delicate balance of forces involving atoms of the protein and the solvent. This balance can be perturbed by changing temperature, pressure, pH and by adding organic molecules known as cosolvents to the solution. Despite the wide use of cosolvents to perturb protein structures in the lab and in living systems, their molecular mechanisms are still not well established. Understanding these mechanisms is a problem of substantial interest, with potential application to the design of new drugs to target proteins. In this dissertation, we probe the …

Annotation Of Multimedia Learning Materials For Semantic Search, Sheetal Rajgure

Dissertations

Multimedia is the main source for online learning materials, such as videos, slides and textbooks, and its size is growing with the popularity of online programs offered by Universities and Massive Open Online Courses (MOOCs). The increasing amount of multimedia learning resources available online makes it very challenging to browse through the materials or find where a specific concept of interest is covered. To enable semantic search on the lecture materials, their content must be annotated and indexed. Manual annotation of learning materials such as videos is tedious and cannot be envisioned for the growing quantity of online materials. One …

Formative Assessment For Middle School Mathematics Instruction: An Evidence-Based Approach To Evaluating Teacher Posing, Pausing, And Probing Moves, Carrie Lee Holmberg

Dissertations

This study involved empirical investigation of a moves-based conceptualization of teacher practices of planning, enacting, and reflecting on formative assessment (FA) in mathematics classrooms in a high-needs school district in California. A qualitative case study of six middle school mathematics teachers’ practices of posing questions, pausing to foster equity of participation and quality of response, and probing student thinking, the study provides empirical evidence of qualitatively distinct levels of teacher posing, pausing, and probing moves. The study utilized a National Research Council-based educational assessment design framework that employed construct maps, multi-faceted items design, and scoring guides to examine teacher practice …

A For Academics Or Athletics: A Critical Look At African American Male Student Athletes In Search Of Identity, Tamekia Bush

Dissertations

The purpose of this phenomenological study was to explore how African American male student athletes developed their athletic and racial identity and how this impacted their academic identity. I conducted two in depth interviews with 6 African American male current or former student athletes who played basketball or football in high school but were not eligible to be a NCAA qualifier for an athletic scholarship. I sought to investigate the point when the student athletes began their career in athletics and when athletics began to impact their academic performance and why it impacted academic performance. I also investigated how the …

A Qualitative Study Of Learning Spaces At A Midwest Elementary School And Its Relationship To Student Attitudes About Reading, Stephanie Marie Limpert

Dissertations

This study investigated the relationship between flexible learning environments and student attitudes about reading. Flexible learning environments are spaces wherein learners can choose from different seating or standing options, locations within the learning space, and the size group with which to work. This allows the learner to find the environment that he or she learns best in. The researcher sought to understand if flexible learning environments and the autonomy to choose from the aforementioned criteria improved student attitudes about reading. To evaluate the relationship between flexible learning environments and student attitudes about reading, the researcher interviewed and surveyed teachers, and …

At-Risk Students: An Analysis Of School Improvement Grants In The State Of Missouri, Anissa Witherspoon

Dissertations

The educational system in the United States continues to pose many challenges for law and policy makers. Many of these challenges can be traced back to two landmark cases, Plessy vs. Ferguson and Brown vs. Board of Education of Topeka. And, while the U.S. Department of Education developed programs to address many of these issues, the cost versus the benefits must be considered. This research study examined the impact of federally-funded School Improvement Grants (SIGs) for elementary, middle, and high schools across the state of Missouri from 2010 to 2015 on retention rates, graduation rates, and test scores. The state …

Can Deep Learning Techniques Improve The Risk Adjusted Returns From Enhanced Indexing Investment Strategies, Anthony Grace

Dissertations

Deep learning techniques have been widely applied in the field of stock market prediction particularly with respect to the implementation of active trading strategies. However, the area of portfolio management and passive portfolio management in particular has been much less well served by research to date. This research project conducts an investigation into the science underlying the implementation of portfolio management strategies in practice focusing on enhanced indexing strategies. Enhanced indexing is a passive management approach which introduces an element of active management with the aim of achieving a level of active return through small adjustments to the portfolio weights. …

Programming Frameworks For Mobile Sensing, Hillol Debnath

Dissertations

The proliferation of smart mobile devices in people’s daily lives is making context-aware computing a reality. A plethora of sensors available in these devices can be utilized to understand users’ context better. Apps can provide more relevant data or services to the user based on improved understanding of user’s context. With the advent of cloud-assisted mobile platforms, apps can also perform collaborative computation over the sensing data collected from a group of users. However, there are still two main issues: (1) A lack of simple and effective personal sensing frameworks: existing frameworks do not provide support for real-time fusing of …

Estimating Vehicles Emissions At Signalized Intersections In The Highway Capacity Manual, Yuanyuan Fan

Dissertations

Over the past decades, motor vehicle volumes have continued to increase at a high rate. As a result, engineers in the transportation field not only need more robust knowledge of traffic operation control and transportation planning, but more attention is also needed to understand and estimate the influences that this increasing volume of vehicles has on the environment, especially the influence on air quality. The EPA has stated that reducing carbon monoxide (CO) from vehicle emissions is the most significant way to control air pollution from the transportation sector.

The Highway Capacity Manual is a national and international resource that …

Direct Computations Of Marangoni Driven Flows Using A Volume Of Fluid Method, Ivana Seric

Dissertations

The volume of fluid (VoF) interface tracking methods have been used for simulating a wide range of interfacial flows. An improved accuracy of the surface tension force computation has enabled the VoF method to become widely used for simulating flows driven by the surface tension force. A general methodology for the inclusion of variable surface tension coefficient into a VoF based Navier-Stokes solver is developed. This new numerical model provides a robust and accurate method for computing the surface gradients directly by finding the tangent directions on the interface using height functions. The implementation applies to both temperature and concentration …

Pltw Female High-School Students' Supports And Barriers In Choosing A College Degree, Lisa Lubin Rubin

Dissertations

Purpose:The purpose of this mixed-methods research study is to identify and describe the barriers and supports that PLTW female students encounter when pursuing a non-traditional female STEM degree upon graduation from high school.

Methodology:A mixed-method (qualitative-quantitative) research design was chosen for this study to explore barriers and supports of female high-school seniors in PLTW. The qualitative portion of the study was phenomenology. This study explored the supports and barriers of female high-school seniors in PLTW courses when choosing a college degree. The quantitative portion of the study was conducted via a hard-copy survey containing closed-ended five-point Likert scale …

Online Formative Assessments As Valid Correlates Of Foreign Language Proficiency Levels As Measured By Ilr/Dlpt5 Summative Tests, Alma Castro-Peet

Dissertations

Purpose: This study explored a technological contribution to education made by the

Defense Language Institute Foreign Language Center (DLIFLC) in the formative assessment field. The purpose of this quantitative correlational study was to identify the relationship between online formative (Online Diagnostic Assessment; ODA) and summative (Defense Language Proficiency Test 5; DLPT5) assessments in foreign language instruction in Spanish, Korean, Chinese Mandarin, and Standard Arabic to determine their relationship to student success in a basic course program for adult students at the DLIFLC.

Methodology: This nonexperimental correlational study included a standard regression model to determine correlations between ODA scores and DLPT5 …

The Effectiveness Of Structured Educational Modules For Primary School Teachers On The Knowledge And Skills In Identification Of Common Mental Health Problems In Selected Schools Of Bangalore District, Esther Shirley Daniel

Dissertations

The teacher plays a significant role in the promotion of the health of the children. Teachers spend most of the school hours with children and are familiar with them. They can detect the signs and symptoms of common mental health problems at the earliest in the classroom setting. It is expected that out of 51 lakh children (6-11 years of age), approximately 5 lakh (9.8 %) children suffer from mental health problems in Karnataka. But there is no organized school mental health programme for teachers in Karnataka. There is no record of active participation of teachers in the school mental …

Knowledge And Practices Of Faculty At Nasm Accredited Institutions In The Southeast Region Regarding Standards-Based Instruction, Jonathan Leon Nelson

Dissertations

In 1993, Congress passed the mandate Goals 2000: Educate America Act, which established standards for K-12 education that outlined the core benchmarks of student achievement for individuals who have mastered the core curricula required to earn a high school diploma (Mark, 1995). Unfortunately, these curricular requirements did not include any criteria for music education, nor did they consider the curricular implications for higher education in providing NSME Standards based training for music educators.

The aim of this study was to determine if and to what extent music education faculty engage in NSME Standards-based instruction within the higher education classroom. Questionnaires …

Case Study Of Distance Learning At University Of Najran, Mahdi Mohammed Saleh Alqotami Alzamanan

Dissertations

In the Kingdom of Saudi Arabia, the need for distance-learning programs in the universities has been gaining importance. Najran, the area in the Kingdom of Saudi Arabia, which this study addressed, has been the target of serious attacks against both the government and the civilian population in a recent conflict with Yemen. Because all areas of Najran have been targeted, including educational institutions, the ability for students to attend the university in recent years has been severely curtailed. While conflict prompted the study, there were, and are, other reasons for promoting distance learning in the Kingdom of Saudi Arabia. The …

Gifted Students’ Perceptions Of Empowerment Within High School Classrooms, Amy Karol Graefe

Dissertations

Past research has indicated that teachers’ use of power directly influences students’ sense of empowerment and that students who feel empowered are more likely to be motivated. Research has also indicated that gifted students who are motivated achieve at a level commensurate with their ability. Lack of teacher training regarding giftedness likely influences teachers’ use of power, thereby impacting gifted high school students’ perceptions of empowerment and motivation. The relationship between teacher power and student empowerment and motivation, however, has not been thoroughly investigated in gifted education literature. This phenomenological study explored classroom situations in which gifted high school students …

Fluid Manipulations Using A Piezo Electric Transformer For Sensing And Spray Generation Applications, Zeinab Ramshani

Dissertations

A steady effort has been made on the development of fluid manipulation techniques for sensing and actuating systems. Conventional techniques of fluid manipulation for sensing and spray generation purposes, often need trained staff or high input power and they are complicated, time consuming and expensive. Therefore, it is necessary to develop new systems which can overcome these drawbacks.

In this dissertation, the author has developed piezoelectric-based systems for fluid manipulation. The focus of this dissertation involves novel approaches of enhancing the sensing and actuating systems using the piezoelectric devices. This includes designing a system, which theoretically can overcome the limitations …

Students' Social Adaptation To Mathematics Tasks, Jeffrey J. King

Dissertations

This qualitative study describes mathematics majors socially adapting to perform mathematical tasks. An advanced undergraduate geometry class was observed for social and socio-mathematical norms. Three pairs of two students engaged in three task-based, semi-structured interviews: paired, individually, then paired again, solving the Seven Bridges of Königsberg and related tasks. A fourth stimulated-recall interview was performed using episodes from the last paired interview. Interview discourses were coded for structure and function to analyze the mathematical practices performed by each pair as shaped by their social interactions. These codes were then inductively analyzed for themes. Findings include: 1) the emergent norms of …

Building Blocks Of A National Style: An Examination Of Topics And Gestures In Nineteenth-Century American Music As Exemplified In Scott Joplin’S Treemonisha, Elisabet Omarene De Vallee

Dissertations

Even though America’s musical elite undertook a veritable boycott of American talent during the nineteenth century, efforts to define concert life along Germanic lines did not prevent the development of a distinctly American sound. The groundwork was laid in the first half of the century in folk songs, national airs, and popular tunes from minstrel shows. It came to fruition after the Civil War, and by the 1920s, all of the elements were in place for an easily recognizable “American Style.” The development of musical topics to evoke the idea of “American” was essential in establishing this style. Most topical …

International Student Enrollment Trends From 2008-2014: Country Case Studies And Comparison To A Midwest Liberal Arts Institution, Emin Hajiyev

Dissertations

The international student recruitment and overall cross-border education have constantly been evolving. In the past two decades, higher education institutions were developing and implementing their plan of campus internationalization. Various universities and colleges have different approaches to the internationalization. However, through the implementation of the process, most of the institutions realized that the cornerstone of the internationalization is the international student recruitment. Despite providing the financial health to the institutions and overall to the process of internationalization, international student recruitment is the provider of the campus multiculturalism and diversity. This research is concentrated on the external factors of the cross-border …

Cellulose Reinforced Thermoplastic Composites By In-Situ Ring-Opening Polymerization, Shahab Kashani Rahimi

Dissertations

Over the past two decades, the increasing concern about the negative environmental impacts of synthetic materials has led to rising interests in utilizing renewable natural resources to develop polymer materials with comparable properties and performance to their synthetic counterparts. One of the major fields of interest is polymer composites where the replacement of synthetic fibers with bio renewable natural fibers is of great potential. However, the processing difficulties, in terms of fiber dispersion and thermal stability have limited the application of cellulosic fibers to polymers with low processing temperatures which are mostly hydrophobic polymers. As a result, the true reinforcing …

The Effect Of Instructional Strategies On Math Anxiety And Achievement: A Mixed Methods Study Of Preservice Elementary Teachers, Janelle K. Lorenzen

Dissertations

This study addressed how different instructional strategies affected preservice elementary teachers’ levels of math anxiety and their achievement in a math content course while considering descriptions of their experiences in the course in relation to their math anxiety and achievement. The instructional strategies used were traditional teaching methods and inquiry-based learning (IBL). A mixed methods embedded design was used in which the major design of the study is a nonequivalent control group design, where the collection of data occurred before, during, and after the intervention. There were 103 participants who were elementary education preservice teachers with 58 of them being …

Effects Of Historical Story Telling On Student Understanding Of Nos And Mendelian Genetics, Cody Tyler Williams

Dissertations

Science education researchers have long advocated the central role of the nature of science (NOS) for our understanding of scientific literacy. NOS is often interpreted narrowly to refer to a host of epistemological claims associated with the process of science and the limitations of scientific knowledge. Despite its importance, practitioners and researchers alike acknowledge that students have difficulty learning NOS and that this in part reflects how difficult it is to teach. Many teachers are uncomfortable with taking time away from traditional science content instruction. One promising method for teaching NOS and science content involves an explicit and reflective approach …

Dielectronic Recombination Calculations For Silicon-Like Ions And The S2+ Orion Nebula Abundance Conundrum, Jagjit Kaur

Dissertations

Modern astronomical spectroscopy and imaging data are of an unprecedented quality, and span the full electromagnetic spectrum. To take full advantage of these data and successfully model the physical conditions in and elemental abundances of astrophysical plasmas, an accurate and complete description of relevant atomic processes occurring in a wide range of cosmic environments is required. The primary focus of this project is to investigate one of the atomic processes, dielectronic recombination (DR), for the entire silicon-like isoelectronic sequence. Dielectronic recombination is generally the most important contribution to the total recombination rate of atomic ions. This study will serve as …

Employing Multivariate Logistic Regression Analysis To Better Understand The Relationship Between Individuals’ Anthropogenic Climate Change Acceptance And Belief In Anti-Climate Change Dissenter Messages, Andrew Phillip Keller Bentley

Dissertations

Organized climate change dissention groups spend a considerable amount of time and energy developing messages designed to convince the public that anthropogenic climate change is neither a reality nor a threat. These messages work against the efforts of climate educators and can be divided into two categories; messages that provide alternative explanations for warming, or messages that attack the work of scientists studying anthropogenic climate change. There has been a lack of research regarding any correlation between individuals’ agreement with these messages and their rejection of anthropogenic climate change. Establishing a correlation would be an indication that educators should take …