The Effect Of Pandemic Shocks On The Performance Of Middle Eastern And African Firms: How Did The Debt Strategy Shape This Effect?, Farah Medhat Elnady

Theses and Dissertations

This paper studies the impact of the Covid-19 pandemic on financial services firms operating in Middle Eastern and African (“MEA”) countries. The methodology utilized firm-level data from MEA countries, employing the panel regression techniques using fixed and random effects models to control for the potential omitted variable bias. The results of the study underlay that (1) With every 1% increase in new Covid-19 cases market capitalization for firms operating within financial services in MEA countries decreases by 0.11%. (2) Highly indebted financial services firms are more responsive to the Covid-19 pandemic, while low debt firms happen to be more resilient …

Student Perceptions Of Icc Development And The Reasons For It During Casa@Auc, Stephen Wright

Theses and Dissertations

Research has described how studying abroad has become a major goal in the Arabic world, focusing on understanding the ideas and way of life of another culture and people. Study abroad programs increase students' “Intercultural communicative competence” as indicated by researchers like Maharaja (2018) and Lee and Song (2019). The current study is a case study involving three participants. It focuses on students' perceptions of the influence of the CASA@AUC study abroad program on their intercultural communicative competence (ICC) as reflected by ACTFL performance indicators they are capable of executing. Results of the study indicate that they have reached advanced …

Codeswitching In The Egyptian Arabic Movies: How Do Social Variables Trigger Codeswitching?, Randa Hassan

Theses and Dissertations

Abstract

This is a qualitative study designed to examine the growing linguistic practice of codeswitching in a sociolinguistic context. For this purpose, 7 Egyptian Arabic films were purposefully selected to investigate what social variables and contexts can be associated with codeswitching. Data was sampled in 43 experts from the 7 films. The data was analyzed in terms of the social variables of education, social class, identity, stance, and age, within the theoretical framework of the critical discourse analysis, the accommodation theory, and the social arena theory. Although the study started with these social variables in mind, data analysis revealed two …

Students' Perceptions Of Non-Native Arabic And Native Arabic Teachers, Mohamed Firgany

Theses and Dissertations

Educators teach Millions of Arabic language learners worldwide, most of whom are not native speakers. Despite their efforts in teaching, developing educational materials, and significant contributions to scientific research, there is a lack of research on them within the context of the Arabic language.

In this project, I explore students' perceptions of teaching practices for native-speaker teachers (NSTs) and non-native-speaker teachers (NNSTs), along with the advantages and disadvantages associated with each. Additionally, I aim to understand the impact of certain variables such as gender, age, nationality, language proficiency, and the purpose of studying on these perceptions.

Through 173 survey responses …

Cardiac Active Tension Modeling Via Genetic Algorithm-Optimized Fractional Order Systems, Afnan Khaled Elhamshari

Theses and Dissertations

Developing a computational model to model cardiac activity has been increasingly important in recent decades. Accurate cell-level active tension modeling for cardiomyocytes is critical to understanding cardiac functionality on a patient-specific basis and developing an effective in-silico cardiac model. However, cell-level models in the literature fail to account for viscoelasticity and inter-patient variations in active tension. This research proposes a genetic algorithm-optimized, fractional order system to model cell-level active tension by extending Land’s state-of-the-art model of cardiac contraction. The model features the (left) Caputo derivative of six state variables that identify the mechanistic origins of viscoelasticity in a myocardial cell …

Implementing Universal Health Insurance: Case Study Of Stakeholders' Perspectives In Port Said, Egypt, Rana Hetta

Theses and Dissertations

This research delves into the multifaceted dimensions of healthcare access through the lens of stakeholders in Port Said, Egypt, following the implementation of Universal Health Insurance (UHI) policies. The central research question explores the impact of UHI policies on healthcare access in Port Said. A set of investigative questions guides this exploration, focusing on beneficiary experiences, healthcare staff perspectives, and the alignment of UHI system implementation with beneficiaries’ healthcare needs. This study seeks to comprehend the institutional and policy context of UHI in Egypt, providing insights from policymakers, healthcare workers, and beneficiaries. Port Said serves as a case study, given …

Nanostructured Cu-Zn Electrode Materials For Green Hydrogen Production, Rahma Leil

Theses and Dissertations

The continuity of human civilization heavily depends on securing sources of energy. After the 1970s energy crisis, scientists and engineers are meticulously looking for fuels that are alternatives to fossil fuels. Hydrogen can store solar energy to be further used as a fuel. One of the renewable ways to produce hydrogen is Photoelectrochemical (PEC) water splitting. PEC water splitting is a promising way to produce green hydrogen. However, one of the bottlenecks in realizing scalable green hydrogen production systems is the inability to identify and fabricate earthabundant, stable, and durable photocathodes. The main challenges with the reported photocathodes so far …

Mechanical And Electromagnetic Properties Of Incorporating Graphene Oxide In Cementitious Mixtures, Cherif Khalil

Theses and Dissertations

This multidisciplinary study aimed at investigating the impact of incorporating graphene oxide (GO) on the mechanical properties and electromagnetic (EM) shielding effectiveness of cementitious mixtures, as well as critically examining the mechanism with which GO affects their microstructure properties. Analysis of the literature review showed that there are discrepancies in reporting the impact of GO on the mortar mix. Consequently, this study focuses on exploring the cause for such discrepancies and identifies three main factors which are thoroughly investigated. The factors were the different sonication energies applied to the GO (Shear Mixing, 1.5 kJ/ml, 3 kJ/ml and 6 kJ/ml), the …

Preliminary Investigation Of Urban Quality Of Life: Towards Effective Measurements Of Wellbeing In New Urban Communities In Cairo., Aly Elnady

Theses and Dissertations

This study focuses on investigating Urban Quality of Life (UQoL) in New Cairo as a case study for New Urban Communities (NUCs) in the Greater Cairo Region. The objective of this thesis is to get an accurate description of urban life in NUCs as a distinct mode of urbanization. The study investigates residents’ Subjective Well Being (SWB) and life satisfaction within a wide range of urban life domains, grouped in a conceptual framework of seven sections: Housing & Neighbourhood Quality, Transport & Mobility, Health & Wellness, Education & Employment, Culture & Recreation, Social & Community Support, and Governance & Neighbourhood …

Clean Drinking Water Access In Egypt’S Marginalized Areas: A Case Study Of Life From Water Foundation, Walaa Nasser Mansy

Theses and Dissertations

Egypt currently suffers from marked water scarcity due to its vulnerability to climate change, uneven water distribution, degradation of water quality, and misuse of water resources in rural and peri-urban areas, leading to health risks and poor hygiene. It is worth noting that Egypt is at a turning point in facing the impacts of climate change action and continuing its national development of water resources to ensure access to safe drinking water and sanitation services to cover the rapid demands of all beneficiaries. However, there is a vulnerability in many marginalized rural and peri-urban areas as they still face a …

Solutions Journalism And Climate Change Journalistic Narratives: Comparative Insights From Egypt And The United Arab Emirates, Nouran Nour Abdelghaffar

Theses and Dissertations

Due to the heavy nature of the climate crisis, climate change news tends to be massively negative. Too much negative information can cause severe psychological impacts and spur news avoidance. Along these lines, solutions-focused climate change reporting presents a juncture for introspection. Solutions journalism is rigorous and compelling reporting about responses to social problems. Focus on the positive while not ignoring the negative; a solution approach could help expand climate coverage by changing the traditional depressing narrative and sharing stories of effective responses. Despite the academia’s growing interest in solutions journalism, there is not an abundance of literature available in …

Study Of Vortices Formation In Lateral Intakes Of Pumping Stations, Muhammad Elgindi

Theses and Dissertations

The inefficient design of pumping stations leads to undesirable flow characteristics and the formation of vortices in the sump. These undesirable flow features adversely affect the pumping unit performance and increase the operation and maintenance cost. The aim of this thesis is to assess the ability of the Realizable turbulence model to predict the formation of free-surface and submerged vortices within lateral pumping stations’ intakes. Additionally, the study aims to investigate the effect of the flow ratio and bottom clearance on the flow characteristics and the vortices formation in the sump. Finally, the study introduces an assessment of curtain walls …

Self-Assessment As A Learning Tool In Efl Writing Classrooms: Perceptions Of Egyptian Teachers And Adult Learners, Hazim Abdelaziz

Theses and Dissertations

The principal aim of this study is to examine the perceptions of adult Egyptian EFL learners and Egyptian EFL teachers on the use of self-assessment as an assessment-for-learning tool in adult EFL courses offered at a private language institution in Cairo, Egypt. It is centered around three main areas of investigation pertaining to the perceptions of adult Egyptian EFL learners and Egyptian EFL teachers on the usefulness of self-assessment, the challenges they face when using self-assessment in adult EFL writing classes, and the affordances that should be given to both groups to ensure the successful application of self-assessment in EFL …

Towards A Sustainable Model For Finishing Materials In Mixed-Use Gated Community Buildings, Dina Mohamed Shawky Ismail

Theses and Dissertations

ABSTRACT

The concept of sustainability has recently become widespread, and most industries attempt to fulfill all requirements to qualify as sustainable. The construction industry is a prime polluting activity that contributes significantly to carbon dioxide (CO₂) emissions. Moreover, use of specific finishing materials such as paint and coatings adds to the emission of volatile organic compounds (VOC) which are extremely harmful to the human health. Hence, proper choice of building and finishing materials can potentially reduce such emissions and takes the building a step closer to qualify a building as a sustainable one. While the construction industry in …

Exploring Ngos’ Perspectives And Their Role In Education Reform In Egypt, Ioanna Moriatis

Theses and Dissertations

This exploratory study elicits NGO perceptions regarding Egypt’s Ministry of Education and Technical Education’s (MOETE) reform efforts, their interest in participating in education reform and policy advocacy, and their existing relationship with the ministry. Drawing on the findings from semi-structured, in-depth interviews with 13 representatives of education NGOs based in Cairo and Giza, this thesis takes a qualitative approach toward answering the following research question: How do NGOs targeting K-12 youth perceive their role in shaping education reform in Egypt? Despite having to navigate a host of obstacles to accessing public schools and working with the MOETE, the NGOs represented …

A 3d Imaging-Based Critique Of Wire Arc Additive Manufacturing (Waam) Simulations, Omar Oraby

Theses and Dissertations

Residual stresses play a critical role in the mechanical behavior and structural integrity of engineered components. Understanding and quantifying these stresses are essential for ensuring the reliable performance and durability of materials and structures. Traditionally destructive methods are used that involve sample sectioning and material removal. However, non-destructive methods have gained popularity due to their advantages in preserving the specimen's integrity for further testing and material waste reduction. Among these techniques, Digital Image Correlation (DIC) stands out as a powerful non-contact and full-field measurement approach. DIC captures displacements and strain distributions by analyzing the deformation of speckle patterns on the …

Phosphomolybdic Acid-Doped Zeolitic Imidazolate Framework-8 Hybrid: Nanostructured Material With Synergistic Antibacterial Effect, Mariam Mohammad Abdelkhalek

Theses and Dissertations

Bacterial infections represent a major global health concern, causing millions of deaths and significant economic burdens. The development of nanostructured surfaces with antibacterial activity can revolutionize infection control practices. In this study, a hybrid material of Zeolitic imidazolate framework-8 (ZIF-8) doped with phosphomolybdic acid (PMA) was synthesized and characterized by FESEM, EDS, XRD, FTIR, and N2 sorption isotherm. The antibacterial activity against Escherichia coli as a model organism was tested by colony forming unit (CFU) reduction assay, minimum inhibitory concentration (MIC), and time-kill curve. PMA@ZIF-8 performance as an antibacterial agent was superior to its individual constituents, suggesting synergistic effect of …

The Utilitarian Islamic Modernity Of Ḥasan Al-ʿAṭṭār (1766–1835), Ian Greer

Theses and Dissertations

In this thesis, I describe and analyze the manifestations of modern thought in the life and works of Ḥasan al-ʿAṭṭār (d. 1835), an Egyptian Islamic scholar who served as Shaykh al-Azhar in the 1830s, in concert with Muḥammad ʿAlī Pasha. These manifestations were significantly influenced by the writings and ideas of Ottoman ʿulamāʿ and political elites which al-ʿAṭṭār would have encountered during his 10-year journey across the Empire. The thesis will also explore the content of al-ʿAṭṭār’s political, legal and social thought, which was guided by a unique form of ‘Islamic utilitarianism’ which reaches across his writings and the reforms …

The Consequences Of Civil-Military Relations On Civil Wars In The Middle East, Alaa Bahnasy

Theses and Dissertations

To unravel the complex dynamics surrounding the outbreak of civil wars in the aftermath of the Arab Spring uprisings, one of the first questions that come to mind is the reason why some Arab countries have witnessed civil wars whilst others have not. The civil-military relations play a significant role in the matter. While much of the existing literature on the causes of civil wars, there is a scarcity of papers that take into consideration the role of civil-military relations. This research focuses primarily on two variables independent variables, namely the civil-military relations and the diversified ethnicities alongside the dependent …

When And Why Do Arabs Verify? Predicting Online News Verification Intention During The 2023 Gaza War, Menna Elhosary

Theses and Dissertations

Guided by the network gatekeeping and secondary gatekeeping theoretical frameworks, this study employed a 2 (news headlines: pro-Palestine/anti-Palestine) x 2 (news sources: the Times of Israel/Al-Jazeera English) experiment embedded in an online survey on a purposive sample of Arab social media users (N= 452), aiming to understand the antecedents of online news verification during the 2023 Gaza War1. The study investigated the motives that might have encouraged or discouraged Arabs from verifying the war-related news circulated on social media. A model was proposed to examine the role of confirmation bias in shaping perceptions about sources and messages, thereby impacting online …

Economic Feasibility Of Material Waste Management “Reduction, Reuse, Recycle And Repair’ Strategies In Egypt’S Footwear Industry, Amira Motawea

Theses and Dissertations

The study aims to provide a comprehensive examination of the feasibility of waste management strategies in the leather and footwear industry, both globally and within the specific context of Egypt. It explores the benefits and challenges associated with efficiently recycling, treating, or reusing material waste generated by the footwear industry, with a particular focus on Egypt. The study begins by discussing established waste management practices in the global fashion industry and focusing on footwear material waste.

The study examines successful waste management methods and systems employed globally, highlighting their potential applicability to the Egyptian fashion sector. A key aspect of …

Towards A Fundamental Understanding Of The Polymer Cold Spray Process, Tristan Bacha

Theses and Dissertations

Cold spray technology lends itself as a versatile process to rapidly apply quality polymer coatings to various substrates; barring limited, although clearly demonstrated, success. The limited success of polymer sprays is a result of modern cold spray knowledge originating from studies with metals. Thus, a deeper understanding of how polymers behave in cold spray is needed to make polymer cold spray a commercially viable process. Various tools are used in this dissertation to progress the fundamental understanding of polymer cold spray as it relates to general processing parameters with a focus on characteristics that do not occur in metals. Polymer …

Laboratory Evaluation Of Warm Mix Additives At Lower Than Traditional Compaction Temperatures, Abdelrahman Mahmoud Waheish Ali

Theses and Dissertations

The study aims to evaluate the impact of warm mix additives (WMA) on the rheological and performance properties of asphalt binders and mixtures. For this purpose, PG 76-28 and PG 58-28 were obtained with one organic (Sasobit Redux) and three chemical WMA (Rediset, Evotherm, and Zycotherm). All WMA-modified asphalt binders were aged at three different aging levels. Laboratory tests such as performance grade (PG), critical temperature differential (ΔTc), asphalt binder cracking device (ABCD), linear amplitude sweep test (LAS), and Fourier transform infrared spectroscopy (FTIR) were performed. In addition to the binder testing plan, this study also evaluated the impact of …

The Role Of The Cdk8 Kinase Module In Maintaining Proteostasis, Stephen Willis

Theses and Dissertations

The underlying etiology of numerous disease states results from perturbations in the maintenance of cellular proteostasis. Carcinogenesis relies on these perturbations to foster uncontrolled cell growth and eventual metastases, while neurodegenerative diseases are a consequence of such perturbations. Control of these processes occurs at numerous molecular levels, commonly starting with transcription. A key transcriptional complex that is involved is the CDK8 Kinase Module (CKM). The CKM is conserved from yeast to man, forming a tetrameric complex consisting of MED12, MED13, CDK8, and CCNC. The CKM has not only been implicated in a variety of cancers but also in a spectrum …

Spectrum Of The Lakes: Unveiling Water Color Of Minnesota's Sentinel Lakes With Satellite Remote Sensing For Water Quality Monitoring., Andrew J. Dooley

Theses and Dissertations

Surface waters are precious natural resources requiring costly time and labor for effective water quality monitoring. New applications of water color analysis by satellite remote sensing are a promising approach to water quality monitoring for scientific, industrial, recreational, and cultural benefit. Water color is an inherent proxy of ecological health and water quality. This research expands previous applications of lake water color analysis and pioneers water color chromaticity analysis for midcontinent lakes in Minnesota, USA. The results of this project are the first accounts of Minnesota’s Sentinel Lake water color, variability of water color by ecoregion, and temporal consistency of …

“What Factors Cause African American Males To Persist Or Depart Before The End Of Their Second Year Of College?”, Rickey Dornell Thompson Jr.

Theses and Dissertations

The purpose of this pilot study was to investigate how African American male students persist through or depart before the end of the second year of their college journey. African American male students tend to drop out of college after their first year and sometimes after their first semester of college. There were several variables and themes that emerged in this study. The dependent variable is the persistence of African American males through their second year of college. The mediating variables, that aimed to explain the relationship between the dependent and independent variables were extrinsic motivation and intrinsic motivation. The …

Triberta And Beyond: Redefining Entity Resolution With Large Language Models, Bi Foua

Theses and Dissertations

Entity resolution (ER) plays a pivotal role across domains by enabling data integration and quality improvement. This dissertation delves into the evolving landscape of ER, introducing innovative approaches that redefine this fundamental task. The first contribution is TriBERTa, a novel representation learning model tailored for ER. TriBERTa sets new benchmarks in entity matching and demonstrates versatility across ER processes like data blocking and resolution. Empirical evaluations on diverse datasets showcase TriBERTa’s superior performance over existing representations, including from large language models. The second contribution explores the use generative language models like GPT-3.5 and Dolly 2.0 for cross-domain entity matching using …

Determining The More Effective Behavior Analytic Intervention For Children With Autism Who Exhibit Pica Behaviors, Jennifer J. Lanham

Theses and Dissertations

Abstract

Determining the More Effective Behavior Analytic Intervention for Children With Autism Who Exhibit Pica Behaviors. Jennifer J. Lanham, 2024: Applied Dissertation, Nova Southeastern University, Abraham S. Fischler College of Education and School of Criminal Justice. Keywords: autism, pica, eating disorders, intervention, applied behavior analysis

This dissertation was designed to determine which behavior analytic intervention was more effective in the treatment and reduction of mouthing non-nutritive substances in children diagnosed with autism. This study included four participants in an A-B-A reversal design with a component analysis across four intervention phases. The study participants were enrolled in a center-based treatment environment …

Aerodynamic Investigation Of Naca 0020 Airfoil With Extended And Serrated Trailing Edge At Various Turbulent Intensities, Livya E

Theses and Dissertations

Lift (upward force) is a significant aerodynamic component that directly relates to the aerodynamic efficiency (lift-to-drag ratio) of the airfoil. Enhancement of airfoil lift is important for industries like wind turbines, aircraft, and turbo machinery. The present study investigates the NACA series airfoil by modifying the trailing edge in the form of extension and serration. The angle of attack was changed from 0° to 35° instep of 5°, and the airflow Reynolds number was fixed as 2.14 × 105. To figure out the flow behavior, surface pressure has been collected from the 50 pressure ports provided over the airfoil surface. …

Analyzing Novel Metal Alloys For Glucose Sensing And Electrocatalysis, Anna Grace Boddy

Theses and Dissertations

In pharmaceutical and medicinal chemistry, metals and metal alloys often receive less attention compared to biological or organic compounds due to many factors including toxicity in the body for drug development or the cost of these metals. However, metals can play an important role in pharmaceuticals, having an impact on original cancer drugs, such as platinum used for head and neck tumors. Electrocatalysis is also another topic that receives less attention over topics such as chromatography in pharmaceuticals due to its potential toxic catalysts and voltages that could be harmful to the body. Electrocatalytic sensors can play an important role …