Digital Commons Network^™

Individual Differences In Numerical And Verbal Abstraction And The Ability To Draw Inferences From Text, Anna Christine Johnson

Dissertations

Abstraction may be defined as the process of isolating commonalities from a series of examples. Numerical estimates (e.g., Brown & Siegler, 2001), prototypes (e.g., Posner & Keele, 1968), and scripts (e.g., Schank & Abelson, 1977) are forms of abstract representations. Abstraction may differ across individuals, with some relying more on memorizing individual examples than on forming abstract representations, or vice versa. McDaniel et al. (2014) elucidated this abstractor vs. memorizer distinction and developed a function learning task to categorize individuals. Subsequent research has explored this distinction as it applies to transfer, the application of previously learned knowledge to new situations …

Perceptions Of Special Education Teachers On The Use Of Assistive Technology For Students With Learning Disabilities In Saudi Arabia: A Qualitative Case Study, Abdullah Mohammed Alshehri

Dissertations

The purpose of this qualitative case study was to gain an in-depth understanding of special education teachers’ perceptions and experiences using assistive technology (AT) to support students with learning disabilities (i.e., dyslexia, dysgraphia, dyscalculia) in public general education schools within the Abha educational district in Saudi Arabia. Interviews, among other data collection methods, were utilized in this extensive investigation to answer two research questions regarding the perceptions of Saudi special education teachers of students with learning disabilities of the usefulness of AT, and the challenges and barriers these teachers perceive as influencing their use of AT. The participants were seven …

Synthesis Of Glucomannan-Xylan Composite Biofilms: Characterization And Applications For Food Packaging, Kholoud Al-Ajlouni

Dissertations

Scientists are most concerned about the need for green alternatives for efficient food packaging polymers to replace petroleum-based packaging products. The waste of corn cobs and the roots of the konjac plant contain hemicellulose, xylan and glucomannan respectively, and can be used to produce biofilms for food packaging.

The aim of these studies is to formulate biofilms from glucomannan-xylan blends that compete with petroleum-based plastic wrap. The biofilms must be strong, smooth, transparent, have a water vapor barrier, have the required mechanical properties and be cheap. Biofilms from glucomannan were stiff, lacked mechanical properties, and absorbed moisture. Therefore, it reacts …

Chemistry Instructors’ Perspectives On Incorporating Climate Change Instruction In Undergraduate Chemistry Courses, Patrick Wilson

Dissertations

Education plays an important role in preparing current and future generations for the challenges ahead caused by climate change. The purpose of this dissertation was to examine the educational influence textbooks and undergraduate instructors have on their students. Three studies were carried out to explore these influences on climate change instruction. The first study looked at the extent, type, and location of climate change topics across 24 undergraduate general chemistry textbooks. Gas chemistry concepts were the most prevalent topic connected to climate change. However, the distribution of climate change related material varied considerably across books. The majority of climate change …

Early Carbonate Diagenesis Of The Miocene Dam Formation In Southwestern Qatar, Mohammed Al-Musawi

Dissertations

The timing and mechanisms of platform-scale dolomitization have been the subject of a long and contentious scientific debate known as the “dolomite problem.” The current study provides new insights through an investigation of the Miocene mixed carbonate-siliciclastics-evaporites Dam Fm in southwestern Qatar. Petrographical, mineralogical, and geochemical data are integrated from two research cores, the Dam-01 and Dam-02. The Dam Fm provides an ideal site to investigate dolomitization because these rocks are: (i) relatively young, (ii) have not been deeply buried, (iii) exhibit no evidence of diagenetic resetting, and (iv) characterized by alternating meter-scale depositional cycles that help constrain the relative …

Investigation Of Public Trust In Science In Connection With Views About Tentative Nature Of Science And Epistemological Beliefs, Asghar Pervaiz Gill

Dissertations

Trust in science is contested in everyday discourse and decision-making. Science education research and instruction must delve into and contribute to enhancing public trust in science. In this context, nature of science (NOS), and epistemological beliefs (EBs) emerge as closely related research areas highlighting the tentative NOS and uncertain aspects of knowledge, which can potentially influence trust in science. In a series of three interrelated studies, this research explores the public trust in science in relation to NOS views and EBs.

The first study emphasizes the role of science education in building trust among undergraduate chemistry students. It assesses the …

The Effects Of Adolescent Trauma, Mental Health Treatment, And Demographic Variables On Educational Outcome, Christopher Postema

Dissertations

Poor educational performance in adolescence can occur due to trauma, substance use, or other stressors. This study used conflict theory as a foundation, suggesting differences in educational outcomes can be attributed to systems perpetuating the current power structures that cause inequality in academic opportunities and performance. Trauma in adolescence can have adverse effects on educational outcomes and emotional stability. Research suggests that mental health therapy as well as a reduction in trauma symptoms can improve educational outcomes. Race, gender, substance use, socioeconomic status, and employment are important variables that could influence educational outcomes. Interaction terms were found in the literature …

Maximising Captured Power And Battery Management For Heaving Wave Energy Converters, Omsalama Mubarak Mohamed

Dissertations

Sea waves are considered the most potent energy carriers among all sources of renewable energy. This research work is concerned with developingtechnologies to enhance performance and improve power capturing and conversion capabilities of a single heaving wave energy converter (WEC) actuated by a PMLG (Permanent Magnet Linear Generator). The objective of this dissertation is achieved by three techniques. The first one considers maximizing conversion between the mechanical and electrical powers. It is implemented by designing intrinsic resistance using a rapid procedure involving the mechanical and electrical models of the converter and considering its operating constraints. A robust PID (proportional – …

Examining The Interrelations Between Rational Choice Inputs: Implications For Criminological Theory And Research, Benjamin Hamilton

Dissertations

An essential component of any rational choice theory of criminal behavior is the notion that crime decisions are driven by an individual’s expected gains and losses to illicit activities. More specifically, offenders are typically presumed to balance the pleasures of the various benefits to crime against the pains associated with crime’s risks and costs, the presumption being that the offender will pursue criminal acts in the event he or she believes the expected utility to crime exceeds that which can be achieved through strictly legal means. Although criminologists have managed to test some of the more basic implications of this …

New Methods For Stereoselective Glycosylation In Application To Significant Biomedical Targets, Melanie L. Shadrick

Dissertations

Glycosyl halides have been utilized for glycosylation reactions since the early studies by Arthur Michael, nearing the end of the 19^th century. Koenigs and Knorr then utilized silver salts to activate glycosyl bromides and chlorides to create synthetic glycosides. Many efforts to improve the outcome of reactions with glycosyl halides have emerged. The key emphasis has traditionally been placed on reaction rates, product yields, and stereocontrol. Recently, our lab reported that silver(I) oxide-mediated Koenigs-Knorr glycosylation reaction can be dramatically accelerated in the presence of catalytic acid additives. Methods to improve glycosylation was explored using mannosyl and glucosyl bromides. However, …

Ways To Prevent Moral Disengagement For Youtube Content Creators: The Role Of Empathy And Self-Compassion, Nathan Andrew Pennington

Dissertations

This study sought to assess the role empathy and self-compassion play in lessening the impact of stress and moral disengagement for digital entrepreneurs, specifically, YouTube content creators. The desire for status and the need for venture legitimacy within the content creation economy, while considered mostly positive traits, can be taken to the extreme, leading to a lack of empathy and self-compassion and even degradation and moral disengagement. The study utilized a mixed-methods approach, combining quantitative and qualitative data collection techniques. Quantitative data within the study provides statistical evidence of correlations and trends, while qualitative data discusses the perspectives and lived …

Binding Interactions Of Biologically Relevant Molecules Studied Using Surface-Modified And Nanostructured Surfaces, Palak Sondhi

Dissertations

This research focuses on the field of surface nanobioscience, wherein different nanosurfaces that will be used as working electrodes in the electrochemical cell are manufactured and surface modified to understand the critical binding interactions between biologically significant molecules like proteins, carbohydrates, small drug molecules, and glycoproteins. This research is essential if we are to determine whether a synthetic molecule can serve as a therapeutic candidate or diagnose a disease in its early stages. In order to fully understand the binding interactions, the study begins with defining some of the fundamental concepts, principles, and analytical tools for biosensing.

Afterwards, we addressed …

Design Thinking’S Effect On Empathy Development In Middle School English- Language Arts, Kim Starkey

Dissertations

The purpose of this quantitative study was to explore the impact of Design Thinking on students' empathy development in middle school English Language Arts (ELA) classrooms. The study involved two middle school instructors with eight classes, implementing Design Thinking, Reader's Workshop, and traditional ELA curriculum in different combinations (n =102) and two control classes (n =27).

The Adolescent Empathy Measure (AMES) and rubrics for analyzing student writing samples were used to assess changes in empathy. The AMES was given before and after the interventions, and the writing samples were analyzed before and after the interventions as well. The findings indicate …

The Public Muse In Congress: The Punctuation Of American Federal Arts Policy, Elizabeth Deichmann

Dissertations

In 1989, American federal arts policy changed suddenly and drastically when the National Endowment for the Arts (NEA) gained unprecedented attention in Congress for controversial grant awards that supported two visual artists. Prior to this, federal arts policy was an insulated subsystem run by experts applying high art aesthetic standards to grantmaking. Informed by punctuated-equilibrium theory (PET), this investigation of congressional rhetoric shows that Republican policy entrepreneurs during this time effectively set a new, more negative tone about federal arts policy by harnessing conservative culture wars messages. The change in tone preceded federal arts policy’s arrival on the broader congressional …

Predictive Modelling Of Road Deterioration Using An Artificially Intelligent Bayesian Belief Networks Approach, Babitha Elizabeth Philip

Dissertations

The ability to predict road deterioration is the cornerstone for developing a reliable Pavement Management System (PMS) that optimizes pavement maintenance programs. Such prediction capacity becomes increasingly important, especially when highway agency funds are confined. This research focuses on the development of prediction models based on an artificial intelligence technique, Bayesian Belief Networks (BBN), that aid decision-makers in forecasting expected road distress curves on the lights of various (e.g., environmental, traffic, and road-specific) factors and maintenance decisions. The novelty of this research revolves around deploying BBNs which allow analysts to yield Markovian predictions of annual road deterioration based on incomplete …

Quad Bike Injuries In The United Arab Emirates: Evidence For Injury Prevention Strategies, Preetha Menon Karuveetil

Dissertations

Quad bikes, also known as All-Terrain Vehicles (ATVs), are versatile vehicles designed for navigating uneven terrain. Originally intended for agricultural purposes, they have gained popularity for recreational use, particularly in the middle east, notably the United Arab Emirates (UAE). While these vehicles offer health benefits, they are associated with substantial safety risks, resulting in injuries ranging from lacerations to severe traumatic injuries, imposing a significant economic burden on healthcare systems.

This research addresses a critical gap in the existing literature by focusing on quad bike injuries in the unique context of the UAE, taking into account its desert environment, rider …

Electrical, Optical, And Thermal Properties Of Snse Based Materials With High Thermoelectric Performances, Najwa Qasem Al Bouzieh

Dissertations

This thesis conducts a thorough exploration of the characteristics and prospective applications of Tin Selenide (SnSe), a pivotal semiconductor for advancing contemporary electronics and optoelectronics. The investigation mainly focuses on comprehending the alterations in SnSe's properties when doped with elements such as Hafnium, Zinc, Bismuth, Germanium, Sodium, Iodine, and Silicon. 2D-SnSe allotropes, when doped with Hafnium, have exhibited remarkable optical characteristics, especially in the δ-SnSe allotrope, rendering it adaptable for varied optical uses like solar cells and LEDs. Additionally, evaluations of elasticity show improved resilience and augmented in-plane stiffness owing to Hf doping, occasionally reducing ductility. The work uniquely emphasizes …

Control Methods For Maximizing Power Absorption And Grid Integration In Point Absorber Wave Energy Converters, Abdin Yousif Elamin

Dissertations

Wave energy is an emerging renewable energy source with great potential attributable to its consistent availability and high energy density. Technologies responsible for harnessing this form of energy are referred to as wave energy converters (WECs), among which point absorbers (PAs) are a notable subcategory. Unfortunately, the unpredictable and variable nature of waves, coupled with their complex hydrodynamics, has hindered PAs from achieving maximum wave energy absorption. Moreover, the inherent variability in wave energy leads to fluctuations in the power output of PAs. These power fluctuations pose challenges for grid integration, which requires power quality compatible with grid code standards. …

Automation Of Crack Detection And Quantification In Civil Infrastructure Facilities Using Deep Learning Techniques, Luqman Ali

Dissertations

Cracks are the earliest signs of structural deterioration that reduce the lifespan and reliability of structures and can lead to severe damage. Assessment and monitoring of the facilities are required for lifetime maintenance and failure prediction. Structure condition information can be obtained manually, i.e., through subjective visual inspection and evaluation by human experts. Manual inspection techniques are labor-intensive, time-consuming, and inspector-dependent, i.e., vulnerable to the inspector’s perceptiveness. Automatic crack detection is crucial at the earliest stage to avoid further structure degradation and allow fast intervention. Deep Learning algorithms have become more popular in crack detection systems in recent years. However, …

A Comparative Analysis Of Demographic And Academic Characteristics And Nclex-Rn Passing Among Urban And Rural Campus Students In A Midwest Associate Degree Nursing Program, Kathleen J. Nacos-Burds

Dissertations

A retrospective study was initiated to determine: (1) the predictive relationship between demographic and academic variables and NCLEX-RN success; and (2) if there were significant differences between urban and rural nursing students that could account for an increased percentage of rural NCLEX-RN failures. A convenience sample was comprised of 398 graduates in 2005-2008, of an associate degree nursing program in the Midwest. Student age group, campus enrolled, Anatomy and Physiology GPA, number of practical nursing terms attempted, Practical Nursing GPA, and the number of associate degree nursing terms attempted were analyzed for predictive value of first-attempt NCLEX-RN success.

A Novel Multi-Model Patient Similarity Network Driven By Federated Data Quality And Resource Profiling, Alramzana Nujum Navaz

Dissertations

Smart and Connected Health (SCH) is revolutionizing healthcare by leveraging extensive healthcare data for precise, personalized medicine. At its core, SCH relies on the concept of patient similarity, which involves the comparative analysis of newly encountered patients with those who exhibit comparable similarities from the existing patient cohort. Yet, this approach faces significant challenges, including data heterogeneity and dimensionality. Our research introduces a multi-dimensional Patient Similarity Network (PSN) Fusion model tailored to handle both static and dynamic features. The static data analysis focuses on extracting contextual information using Bidirectional Encoder Representations from Transformers (BERT), while dynamic features are captured through …

Late Cretaceous Ophiolite Emplacement And Cenozoic Collisional Tectonics In The Northern Uae: Insights From Broadband Magnetotelluric Data, Biruk Abera Cherkose

Dissertations

The Late Cretaceous obduction of the Semail Ophiolite onto the rifted passive Arabian margin and the Cenozoic collisional tectonics with the final closure of the Neotethys Ocean are major contributors to the present-day crustal architecture of the northern United Arab Emirates. The emplacement of the Semail Ophiolite and the progressive accretion of the underlying thrust sheets onto the previous Arabian rifted margin in the Cenomanian resulted in lithospheric flexure of the Arabian Platform and led to the formation of a Foreland basin adjacent to the mountain belt in the United Arab Emirates and Oman. Tectonic stacking of the foreland sediments …

First Principles Investigation Of Energy Harvesting Materials For Green Environment, Mehreen Javed

Dissertations

The cutting-edge research of materials enables the discovery of novel energy harvesting materials. In this project the structural, electronic, magnetic, thermodynamic, thermoelectric, and optical properties of different energy harvesting materials are studied. The main objective of this work is primarily to study thermoelectrically efficient half-heuslers and photovoltaically active perovskites. Variant schematics of innovative compounds with defect introduction are investigated. The compositionally altered compounds designed by introducing crystallographic defects in terms of substitutional or interstitial dopants, offer new trends of material properties. To accomplish the task, Density Functional theory based computational packages (VASP and Wein2K) are used. Using defect and strain …

Aerodynamic & Aeroacoustic Performance Of Wind Turbine Blades Featuring Enhanced Flow-Control, Md Zishan Akhter

Dissertations

Wind energy, being one of the cleanest and most sustainable sources, has undergone remarkable growth in recent years due to advancements in aerodynamics and increased power output. The research community is actively pursuing the development of cutting-edge solutions to further optimize wind turbine technology, ensuring its maximum efficiency and revolutionizing the landscape of wind power.
/="/">This research aims to design and develop flow-control devices for wind turbine blades, employing both active and passive control mechanisms, namely morphing trailing-edge and slot-profile, respectively. The objective is to enhance wind turbine performance across a wide range of wind speeds. The morphing trailing-edge …

A Data-Efficient Approach For Effective Diagnosis Of Left Ventricular Hypertrophy From Echocardiography Modality, Moomal Farhad

Dissertations

Left Ventricular Hypertrophy (LVH) is a medical condition characterized by the thickening and enlargement of the left ventricle (LV) of the heart. Accurate and timely diagnosis of LVH is vital for clinical prognosis and treatment decisions. Echocardiography has emerged as the gold standard for diagnosing LVH due to its ability to independently predict long-term risks such as heart failure and stroke. Echocardiography, a non-invasive and cost-effective imaging technology, is instrumental in assessing various aspects of heart health. Among the critical diagnostic calculations made possible by echocardiography, the determination of ejection fraction and heart chamber size is paramount in assessing LVH. …

2d Materials For Gas Sensors, Biosensors, Photonic, Energy And Information Storage Devices: Dft Study, Wadha Khalifa Al Falasi

Dissertations

2D materials exhibit tremendous properties, such as their tunable band gap, high surface to volume ratio, appropriate carrier mobility, and large Spin-Orbit Coupling, making them promising candidate for applications in optoelectronics, information storage, energy storage, toxic gas sensing, and biomarkers detection. My thesis focuses mainly on Transition Metal Di chalcogenide Monolayers (TMDs ML) for all previously mentioned applications and Mxene (Ti₃C₂T_x) for Lung Cancer (LC) biomarker detection. We have utilized two DFT-based packages: (i) VASP, based on plane-wave basis set, and is worldwide most reliable for probing the electronic and magnetic properties; (ii) ATK, …

Intelligent Computation Offloading In Edge And Cloud Internet Of Vehicles System, Huned Yusufbhai Materwala

Dissertations

The emergence of Internet of Vehicles technology through Vehicular Ad-hoc Networks represents a promising development in the realm of smart city. It empowers the development of smart city applications with a primary focus on improving traffic safety, optimizing traffic flow, and enhancing the overall driving experience. These applications come with demanding quality of service requirements outlined in Service Level Agreements (SLAs). They are communication-intensive, requiring a real-time response, and computation-intensive, demanding high processing. Due to inherent limitations in the computational and storage capacities of vehicles, the system relies on offloading application requests to edge and cloud computing infrastructures. However, the …

Not All Best Practices Result In Best Performances: Two Empirical Studies Of Online Accounting Education, Mark Sanders

Dissertations

Exploring the impact of specific pedagogical strategies in online accounting education on student learning outcomes is central to this research. This two-study dissertation focuses on the influence of course delivery methods on student performance and the mediating function of accounting efficacy. A diverse sample of accounting and business students was quantitatively analyzed to determine the relationship between course structure, classroom justice, students’ motivation and their accounting efficacy, applicability of learned material, and final grades. Even though certain teaching practices were advantageous, the combination of these practices did not always lead to improved student performance, according to the findings. Significant determinants …

Interactions Of Lewis Acids And Carbonyls In The Presence Of Ligands Or Additives: How Solution Behavior Differs And The Implication On Catalytic Systems, Sophi Rose Todtz

Dissertations

Lewis acids have proven extremely valuable to the field of organic synthesis. Their diverse application in reactions of carbonyl-containing substrates has caused a multitude of efforts towards characterization of solution interactions between Lewis bases and Lewis acids. Though Lewis initially described a 1:1 interaction between one acid and one base, our lab has previously employed in-situ IR spectroscopy to characterize 2:1, 3:1, and 4:1 solution structures under catalytic conditions. These insights have played a critical role in our understanding of catalyst behavior in carbonyl-containing systems, allowing us to describe byproduct inhibition in the carbonyl-olefin metathesis mechanism. The research presented in …

A Descriptive Exploration Of Quality And Opportunities In Outdoor Urban Play Spaces: The Case Of Chicago Public Schools, Katherine Anne Varey

Dissertations

This study investigated the quality of children’s play spaces, both green and built, in and surrounding urban public schools in Chicago. Given children’s declining access to nature and the outdoors, especially in urban areas, the aim of the study was to both assess the current potential for high-quality outdoor experiences, as well as to uncover additional, low-cost, and low-burden opportunities that may exist for enhancing outdoor experiences. Based on a selected sample of 60 Chicago Public Schools, this mixed methods study employed quantitative ratings of play space and neighborhood quality, geographic information systems (GIS) mapping techniques to show distribution of …