Digital Commons Network^™

Saudi Elementary Mathematics Teachers’ Knowledge For Teaching Fractions, Mona Khalifah A Aladil

Dissertations

Recent reform efforts in Saudi Arabia attend to mathematics instruction with a great deal of emphasis to improve Saudi mathematics education. Studies in different countries have confirmed that teachers’ mathematical knowledge for teaching plays an important role in mathematical quality of instruction and students’ achievement (e.g., Ball, 1990; Baumert et al., 2010; Hill, Rowan, & Ball, 2005). Yet few studies about mathematics teachers’ knowledge for teaching have been conducted in the Saudi context. This study investigates Saudi elementary mathematics teachers’ knowledge for teaching in the content strand of rational numbers with an emphasis on fractions, which is an important step …

Response Of Deep Aquifers To Climate Variability, Karem Fathy Abdelgaber Abdelmohsen

Dissertations

Our recent analysis of Temporal Gravity Recovery and Climate Experiment (GRACE) solutions over the largest aquifer system in Africa (the Nubian Sandstone Aquifer System: NSAS) revealed that while the response of deep aquifers to climatic variations remains a relatively slow process that takes thousands to tens of thousands of years, there is a much faster response in aquifers that are characterized by dense networks of faults, fractures and karst as is the case with the NSAS. This rapid groundwater flow, when it occurs, is detected as an increase in GRACE_TWS over areas downgradient and distant (hundreds of km) from …

Are They Ready? Implementing 21st-Century Learning Skills Integration Into Indonesia Science Instruction, Esty Haryani

Dissertations

Science and technology education are essential subjects for achieving the desired workforce skills for the 21st century (Bybee & Fuchs, 2006). In 2017, Indonesia adopted the 21st century learning and innovation framework into its national curriculum to address the demand to improve students’ readiness for the complexity of the future whether for the work environment or in their personal lives. This learning and innovation skills framework focuses on the development the skills of creativity and innovation, critical thinking and problem solving, collaboration, and communication, known as the 4Cs. However, there is little knowledge on the integration of these skills into …

On Simes’S Second Conjecture: An Extended Single-Step Simes Test Procedure For Multiple Testing, Matthew G. Hudson

Dissertations

One of the major concerns with multiple tests of significance is controlling the family wise error rate. Various methods have been developed to ensure that the false positive rate be maintained at some prespecified level. One of the most well know being the Bonferroni procedure. Simes presented an improved Bonferroni procedure for testing the global hypothesis that is more powerful and less conservative, especially with positively correlated tests. While Simes’s procedure is more powerful, it does not allow for making inferences on the individual hypotheses. However, the Simes procedure has since become the foundation of many p-value based multiple testing …

Teacher Perceptions Regarding The Purpose Of K-12 Education, Peter M. Grostic

Dissertations

This study explored the perceptions of teachers regarding the purposes of K-12 education and the influence of belief sources on their perceptions. Purposes of K-12 education and the ways in which they have changed over time are topics for which researchers are concerned (Carpenter, 2005; Labaree, 2013). Addressing this concern, there is existing literature focused on understanding purposes through K-12 school mission statements (Schafft & Biddle, 2014; Stemler & Bebell, 2012), and a multitude of reflections regarding what K-12 education purposes should be (Biesta, 2015; Macallister, 2016; Robinson & Aronica, 2014). Less is known regarding what frontline K-12 education practitioners …

Let’S Talk Fluency: Elementary Educators’ Perceptions Of The Impact And Implementation Of Fluency Instruction Within The Leveled Literacy Intervention Framework, Megan L. Michalczak

Dissertations

This study was warranted to thoroughly understand general and special education teachers’ perceptions of the implementation of Leveled Literacy Intervention (LLI) within Tier II and Tier III of a Multi-tiered System of Support (MTSS) while focusing on reading fluency instruction. Using a mixed methods approach, this study described the impact of LLI on student outcomes in reading fluency, as well as examined the integrity of LLI implementation within Tier II and Tier III through descriptive statistical analysis of student achievement data and a document review of intervention records. In addition, through the use of inductive thematic analysis of observations and …

On The Local Theory Of Profinite Groups, Mohammad Shatnawi

Dissertations

Let G be a finite group, and H be a subgroup of G. The transfer homomorphism emerges from the natural action of G on the cosets of H. The transfer was first introduced by Schur in 1902 [22] as a construction in group theory, which produce a homomorphism from a finite group G into H/H^' an abelian group where H is a subgroup of G and H' is the derived group of H. One important first application is Burnside’s normal p-complement theorem [5] in 1911, although he did not use the transfer homomorphism explicitly to prove it. …

Providing Head Start Services Amid A Global Pandemic: A Mixed Methods Explanatory Study Of Capacity, Resources, And Support, Kelly L. Vigants

Dissertations

The COVID-19 pandemic altered education in dramatic ways including immediate building closures and the implementation of virtual instruction. In March of 2020, Michigan faced a statewide shutdown on all non-essential travel as Michiganders were ordered to “Stay Home. Stay Safe.” Head Start began to provide remote services to families and students. Head Start lead teachers were charged with using virtual methods to teach their students. With little direction in the beginning and many unknowns, Head Start lead teachers used innovative methods to promote family engagement.

This study used a mixed method, explanatory sequential design to evaluate the most effective methods …

Objectively Determining The Language-Related Communication Challenges For In-Flight Operations, Fehime Utkan

Dissertations

Communication breakdowns between pilots and air traffic controllers (ATCs) have been identified as primary factors in fatal airplane accidents (Wu et. al., 2019; Bauh & Stolzer, 2018; Ritter, 1996; Eurocontrol, 2011). Although there are various aspects that have affected communication efficiency, language-related issues have been mostly associated with transmissions involved in serious incidents, especially in multicultural flight environments (Sexton & Helmrich, 2000). More than 2,000 people have died in accidents where miscommunication was a primary factor (Bauh & Stolzer, 2018; Patty, 2016). By the year of 2025, the air transportation system is projected to become more complex, and the volume …

Development Of Functional Materials And Devices On Flexible Platforms Using Additive Print Manufacturing Processes For Biomedical And Environmental Applications, Dinesh Maddipatla

Dissertations

In recent years, considerable research has been vested into the development of printed electronics (PE) to explore the best ways of fabricating electronic devices on flexible platforms using additive print manufacturing processes. PE produces flexible devices that are compatible with complex geometries, foldable applications and conformal to curved surfaces, with a promising potential for large‐area device fabrication at relatively lower manufacturing costs. This dissertation focuses majorly on the design and fabrication of novel flexible functional materials and devices for biomedical and environmental applications using additive printing processes.

Initially, a simple paper-based low cost and rapid prototypable platform with oxygen sensors …

Three Essays On International Financial And Monetary Interactions, Kemal Burak Bekircan

Dissertations

This dissertation develops three essays on safe haven currency behavior and international monetary interactions.

Essay one notes the dramatic appreciation of the U.S. dollar vis-à-vis all world currencies, along with its reversal after a year on the account of the Great Recession. This paper investigates bilateral U.S. dollar exchange rate movements during and in the aftermath of the Great Recession. I find that increasing global market uncertainty has a significant and consistent effect in strengthening of the U.S. dollar. This striking finding suggests flight-to-safety phenomenon of foreign investors, and repatriation of capital flows to the United States by the U.S. …

Acculturation, Psychological Well-Being And Substance Use Behaviors In Asian Indian Americans, Sonia Y. Amin

Dissertations

The American population is becoming more diversified with increases in the number of immigrants and refugees entering the country. These new Americans bring distinct cultural values, traditions, and worldviews. With this diversity, an important need has arisen to better understand the interplay of culture, physical, and mental health concerns that affect specific racial and ethnic populations. This increase in knowledge and awareness will aid in the development and provision of culturally-sensitive mental health services. The stress of immigration and the multifaceted sociocultural and psychological adaptations involved in adjusting to living in a new country with a Eurocentric dominant culture can …

Enhancement Of Critical Current In High-Temperature Superconductors By Ion Beam Irradiation Induced Defects, Prashanta Mani Niraula

Dissertations

Particle irradiation is used to induce defects in high-temperature superconducting Y₁Ba₂Cu₃O_7-x (YBCO) coated conductors, containing predominantly c-axis oriented barium zirconate (BZO) nanorods as pre-existing vortex pinning defects. Samples are irradiated with 50.0 MeV Cu ions with doses of 2.5 x 10¹², 2.0 x 10¹², 1.5 x 10¹², 1.0 x 10¹², 0.75 x 10¹², 0.5 x 10¹², 0.05 x 10¹² ions/cm². The dose of 0.5 x 10¹² ions/cm² is found to be the optimal dose with a …

Atmospheric Turbulence Distortion In Video: Restoration Utilizing Sparse Analysis, Benjamin J. Sanda

Dissertations

The removal of atmospheric turbulence (AT) distortion in long range imaging is one of the most challenging areas of research in imaging processing with an immediate need for solutions in several applications such as in military and transportation systems. AT exacerbates distortion due to non-linear geometric blur and scintillations in long-distance images and videos, severely reducing image quality and information interpretation. AT negatively impacts both human and computer vision systems, compromising visibility essential for accurate object identification and tracking.

In this dissertation, a novel sparse analysis framework is developed to address efficient AT blur and scintillation removal in video. Operating …

Schools’ Civil Rights Obligations To English Learners: Leadership Perceptions On Key Issues, Pamela R. Schwallier

Dissertations

English Learners (ELs), who now represent nearly 10% of all K-12 public school students, 4.8 million of who speak over 400 different languages and dialects, continue to lack equitable educational opportunities as demonstrated through gaps in achievement outcomes, poor graduation rates, and identified systemic barriers related to the intersectionality of language, culture, race, and racism (Crump, 2014; DeMatthews & Izquierdo, 2017; Menken & Solorza, 2015; Morita-Mullaney, 2018; National Clearinghouse for English Language Acquisition [NCELA], 2015, 2018). This quantitative study captured over 800 K-12 educational leaders’ perspectives, via an anonymous electronic survey, on key issues regarding equitable programs for ELs that …

Implementing A Professional Learning Community In A Private School In The Dominican Republic: An Instrumental Case Study, Miguelina Adelaida Coronado Cornelio

Dissertations

The initiative of turning schools into Professional Learning Communities (PLC) is being implemented by many schools and school systems in different countries. PLC processes have shown to be successful in enhancing teachers’ and students’ learning (Gumus, 2013; Michalak, 2009; Mullen & Schunk, 2010). The fact that the Dominican Republic (DR) is committed to improving the quality of education, the implementation of PLC processes seems to be a compelling option to reach this goal. The Dominican Ministry of Education has followed the guidelines that research in the U.S. and other countries have set and has recently adopted PLCs’ features and processes …

Female Graduate Students’ Experiences And Career Orientations In Stem: A Comparative Case Study, Jasvir K. Pannu

Dissertations

Regardless of implementation of government policies to promote STEM education and eradicate the underrepresentation of women and minorities, the number of women choosing STEM throughout their educational career remains low. In 2018 65% doctorate degrees were awarded to men and only 35% to women. Moreover, 40% of all students enrolled in doctorate programs drop out before completion. The process of socialization in graduate school and students’ non academic responsibilities play critical roles in graduate students’ success and future career orientations. Processes of socialization involve interactions with faculty, peers, and administration while taking courses and conducting dissertation research. Non academic engagements …

Hierarchical Aggregation Of Multidimensional Data For Efficient Data Mining, Safaa Khalil Alwajidi

Dissertations

Big data analysis is essential for many smart applications in areas such as connected healthcare, intelligent transportation, human activity recognition, environment, and climate change monitoring. Traditional data mining algorithms do not scale well to big data due to the enormous number of data points and the velocity of their generation. Mining and learning from big data need time and memory efficiency techniques, albeit the cost of possible loss in accuracy. This research focuses on the mining of big data using aggregated data as input. We developed a data structure that is to be used to aggregate data at multiple resolutions. …

A Signal Detection Framework For Evaluating The Effects Of Feedback On Stroke Recognition, Jordan D. Bailey

Dissertations

The impact of stroke on the lives of individuals and the healthcare system is considerable. Damage from stroke can be reduced if the treatment is administered at the appropriate time so early recognition is essential. One problem is that strokes present in a variety of ways that sometimes do not fit into the Facial drooping, Arm weakness, Speech difficulties and Time (FAST; American Heart Association, 2019) acronym. Signal detection is one way to measure decision making under conditions of uncertainty (e.g., discriminating stroke symptoms and risk factors from other symptoms, and non-risk factors). The methodology also allows us to consider …

Cardiac Electrophysiology: Exploring Racial And Gender Outcomes Of Treatment Of Paroxysmal And Persistent Atrial Fibrillation Using Sotalol And Dofetilide, Nicole Lanette Bradford-Love

Dissertations

Purpose

The purpose of this study is to explore the association between gender and racial lines in the conversion and sustainment of normal sinus rhythm (NSR) from paroxysmal atrial fibrillation (PAF) and persistent atrial fibrillation using the anti-arrhythmic drugs (AADs) sotalol and dofetilide.

Methods

A secondary data analysis was performed to assess the relationships of the independent and dependent variables listed above. Using SPSS v. 24 descriptive statistics were obtained and initially evaluated for accuracy with histograms. A cross-tabulation frequency table was produced to determine the number of variables that fell into each dependent category. Following this, the frequencies were …

Understanding The Influence Of Interdisciplinary Research: An Examination Of Carol Hirschon Weiss’S Scholarship, Gregory Dee Greenman Ii

Dissertations

Research evaluation is the subfield of evaluation that examines the processes and products of scientific and technological research. This dissertation explores the case of interdisciplinary research evaluation by reviewing the publications of one of the most influential and highly cited scholars in evaluation, public administration, and knowledge utilization: Carol Hirschon Weiss. As one of the foundational theorists of evaluation, the evaluation perspective of Weiss's work typically pervades discussions. That approach ignores her influence in other fields, particularly her centrality to the knowledge utilization field. Prior research indicates that the influence of interdisciplinary research is challenging to ascertain because research evaluation …

Novice Second-Career Teachers: Experiences And Meaning-Making Of The Transition Process, Paula Dennisse Núñez Del Rosario

Dissertations

The world we live in is in constant change. During change, people focus on the observable part of what is not there anymore and what has come in its place, not being conscious of the adaptation process that underlies the change: the transition. The transition is a process that has different phases and the development of the process is differentiated depending on the individual. Transition is also directly related to the type of experience. Although circumstances differ among individuals, it is possible to say that there are some common aspects in terms of challenges faced by all novice teachers, both …

Monitoring Salt Diapir Related Land Deformation And Distribution: A Geophysical And Remote Sensing Approach Jazan Province, Saudi Arabia, Hannah G. Pankratz

Dissertations

Salt diapirs are rarely preserved on the surface and seldom considered as environmental hazards. The Jazan city diapir (JZD) is located in southwest Saudi Arabia along the Red Sea coastal plain and outcrops in the middle of a rapidly growing port city. The intrusion of the diapir (~ 2 km²) into the overburden sediments continues to cause uneven surfaces, compromises building foundations and infrastructure, caused dissolution sinkholes, and limits the expansion of the city along the coastline. This research aims to better understand the distribution and deformation associated with salt diapirs in arid environments.

Using integrated Interferometric Synthetic …

A Phenomenological Study Of Faculty Members’ Experiences With Attempting To Integrate Religion And Spirituality Into Counseling Psychology Doctoral Training, Theresa M. Nutten

Dissertations

Religion and spirituality (R/S) are two of several multicultural variables salient to some clients seeking counseling, therefore psychologists are expected to be sensitive to and respectful of R/S in professional duties (APA, 2017a; APA, 2017b). However, research has shown that the integration of topics of R/S into the training of psychology graduate students has been minimal at best (Brawer et al., 2002, Hage et al., 2006, Saunders et al., 2014; Schafer et al., 2011; Schulte et al., 2002; Vogel et al., 2013). There are potential logistical and personal barriers to the inclusion of religion and spirituality into mental health training …

The Effect Of Principal Leadership On Student Achievement: A Multivariate Meta-Analysis, Huang Wu

Dissertations

Principal leadership has been widely considered as a significant factor for school improvement and student learning. However, there are discrepancies among previous findings and controversies on both the magnitude and nature of the relationship between principal leadership and student achievement. The purpose of this study is to further the understanding of whether and how principal leadership influences student achievement.

This study is a systematic review and multivariate meta-analysis of 42 empirical studies about principal leadership’s effects on student achievement, generated during the period between 2000 and 2020 in the United States. There were three parts for the analyses: (a) a …

The Experiences Of African American Men At Predominantly White Institutions Of Higher Education, After Successfully Transferring From A Community College, Keenan King

Dissertations

African American men complete post-secondary education among the lowest rates of any other subgroup in higher education (Brooms & Davis, 2017; Farmer & Hope, 2015; Palmer, Wood, Dancy, & Strayhorn, 2014; Warde, 2008). This study focuses on addressing this problem by attempting to understand the experiences of African American men who successfully navigate a higher education pipeline from community college to a four-year, predominantly White institution (PWI). Half of all African American men enter higher education at the community college level (Villavicencio, Bhattacharya, & Guidry, 2013); therefore, community college plays a key role in shaping their experiences in higher education …

Counselor Education Doctoral Students’ Experiences As Developing Gatekeepers, Diana Charnley

Dissertations

This phenomenological study sought to understand and describe the gatekeeping experiences of counselor education doctoral students and enumerate key influences in their learning and development. A national sample of 75 doctoral students responded to the descriptive pre-screening survey, and a sub-sample of 15 completed semi-structured interviews. Using interpretative phenomenological analysis, two overarching or meta-themes and five main themes were identified pertaining to how doctoral students view their role as gatekeeper and how they learn and experience gatekeeping. Meta-themes included doctoral students feeling “in the middle”, especially between faculty and master’s students, and how they are working to address these uncertainties, …

Mindfulness And Technology: Evaluating An Online Mindfulness Intervention For Symptoms Related To Sexual Assault, Erica Catherine Johnson

Dissertations

Sexual assault has been found to increase the risk of distressing psychological symptoms including PTSD, depression, somatization, drug and substance use, lower quality of life and experiential avoidance. As such, interventions for reducing the distress and negative impacts of sexual assault are of importance. Mindfulness is of particular interest as it addresses one of the prominent factors known to maintain psychological distress after trauma, experiential avoidance (Polusny et al., 2004; Merwin et al., 2009). Furthermore, an online mindfulness-based intervention can increase the accessibility and reduce the barriers to treatment. A within subjects repeated measures open clinical trial design was used …

Establishing Auditory Discrimination And Echoic Stimulus Control With An Auditory Matching Procedure, Clare Christe

Dissertations

A generalized auditory matching repertoire is considered an early milestone in the development of verbal behavior (Greer & Keohane, 2006). Previous literature has demonstrated that the auditory matching (AM) protocol can improve echoics in individuals with developmental delays (Brown, 2005; Choi, Greer & Keohane, 2015; Du, Speckman, Medina, & Cole-Hatchard, 2017). However, some children experience difficulties with the match-to-sample (MTS) format of the AM protocol, if they are unable to perform delayed MTS tasks.

One alternative to MTS is the go/no-go procedure (Serna, Dube, & McIlvane, 1997), which requires the student to make a simple discrimination (i.e., same/different) between two …

Wind Uplifting Performance Of Roof-To-Wall Connections And Roof Structures With Elastomeric Adhesives In Light-Frame Wood Buildings, Bilal M. Alhawamdeh

Dissertations

Light-frame wood residential buildings are highly susceptible to damage caused by severe wind events such as hurricanes and tornados. Roof failures in residential buildings are commonly observed due to weaknesses of or missing connections. Roof-to-wall connections not only have significant influences on roof performance but also affect building resistance due to their critical role of transferring wind loads to the wall system and ultimately to the foundation. Roof fails when it has no sufficient wind uplift resistance due to improper selection or installation of construction materials (including fasteners) and strength degradation due to aging or long service. Toenailing is commonly …