Digital Commons Network^™

Infrastructural Resiliency Analysis Concerning Extreme Events, Yasaman Norouzi

Theses and Dissertations

Infrastructural resiliency is critical for maintaining functionality during and after extreme events, ensuring minimal service disruptions and supporting rapid recovery. Key resiliency attributes—robustness, redundancy, resourcefulness, and rapidity—enhance infrastructure adaptability and safety. This study investigates significant factors and methods for improving resiliency, with a focus on equity and reliability. A new resiliency metric, incorporating equity as a core element, is developed using probabilistic approaches. This metric integrates structural vulnerability with accessibility, income, cost, and exposure factors to evaluate community impact on infrastructure access. To achieve this, limit state functions are defined to assess how infrastructural vulnerabilities affect diverse communities. Apart From …

Jackfruit Peel Valorization Through An Integrated Biorefinery Approach, Rohil Kumar K Mr

Theses and Dissertations

Jackfruit (Artocarpus heterophyllus) peel (JFP), an abundantly available lignocellulosic biomass, remains largely underutilized despite being rich in cellulose, hemicellulose, lignin, and pectin. In India, approximately 13,460 hectares are under jackfruit cultivation, with Panruti in Tamil Nadu as a major production zone. The discarded peel often contributes to environmental pollution and greenhouse gas emissions. The present study emphasizes sustainable valorization of JFP through an integrated biorefinery framework for generating value-added bioproducts.

Major biopolymers, cellulose, hemicellulose, lignin, and pectin were extracted and fractionated, followed by detailed physicochemical characterization using FTIR, NMR, XRD, SEM, TGA, DSC, GPC, and BET analyses. Pectin extraction with …

Development Of An Ensemble Biosensor For Fatty Acids And Enhancing The Antibiotic Properties Of Meropenem With Hydrophobic Ion Paring And Nsf National I-Corps Experience And Commercialization Roadmap For The Paper Based Ensemble Biosensor For Ibs, Krishna Paul

Theses and Dissertations

This thesis integrates three interconnected studies focused on advancing biomedical diagnostics and therapeutic formulation. Primary task was developing an ensemble biosensor for multiplex fatty acid detection using protein - fluorophore interactions. A fluorescence matrix of BSA and FABP with 1,8-ANS, 2-AC, and fluorescein differentiated eight fatty acids with 94.59% accuracy. Validation in H. pylori positive stool samples confirmed its sensitivity and specificity with potentiality as a non-invasive diagnostic platform for Gastrointestinal and chronic diseases. The second project explores Hydrophobic Ion Pairing (HIP) to enhance the lipophilicity and bioactivity of the β-lactam antibiotic meropenem. HIP complexes with hydrophobic counter-ions improved stability, …

Individualizing Social-Emotional Learning For Infants And Toddlers With Special Needs, Charlotte Marie Quiñones

Theses and Dissertations

Infants and toddlers develop socially and emotionally at different rates, and children with special needs face added challenges that require intentional support. Social-emotional learning (SEL) in the earliest years builds the foundation for school readiness, relationships, and lifelong success. This qualitative case study explored how infant and toddler teachers individualize SEL for children with special needs in one inclusive, culturally diverse early childhood program. Four teachers participated through semi-structured interviews, classroom observations, and a focus group. Program documents and lesson plans supplemented the data. Guided by the SEFEL framework, double-loop learning, and culturally responsive pedagogy, the study found that teachers …

The Interactions Between Part-Time African American Male Students And Academic Advisors In A One Stop: A Case Study, Donnell Clement

Theses and Dissertations

This qualitative case study examined how interactions between part-time African American male students and their advisors in a one-stop enrollment center motivated them to persist. Guided by Wood and Harris’s Socio-Ecological Outcomes (SEO) model, the study focused on the non-cognitive, academic, environmental, and campus ethos domains to explore how advising relationships support both advisors and part-time African American male student success. Data collection included observations of six advisor–advisee pairs across three campuses and interviews with both advisors and students. Stake’s (1995) approaches of direct interpretation and categorical aggregation guided the analysis. Findings indicated that academic advisors acted as validating agents, …

Disproportionality Of Multilingual Learners In Special Education: A Mixed Methods Study Exploring The Relationship Between Teacher Self-Efficacy And Sheltered Instruction, Jessica Braynor

Theses and Dissertations

Abstract Jessica Braynor DISPROPORTIONALITY OF MULTILINGUAL LEARNERS IN SPECIAL EDUCATION: A MIXED METHODS STUDY EXPLORING THE RELATIONSHIP BETWEEN TEACHER SELF-EFFICACY AND SHELTERED INSTRUCTION 2025-2026 Hajime Mitani, Ph.D. Doctor of Education in Educational Leadership This study addressed the issue of disproportionality of multilingual learners (MLs) in Special Education. Using mixed-methods explanatory sequential design, the study examined the relationship between sheltered instruction implementation, domain-specific self-efficacy (pedagogical-content, linguistic, and sociocultural), and referrals of MLs to Intervention & Referral Services (I&RS) and Special Services. Quantitative data were collected from general education teachers using measures of Sheltered Instruction Observation Protocol (SIOP) implementation and self-efficacy, along …

Green Roofs For Grey Water Treatment – Comparative Study Of Economic And Environmental Impacts, Shaden S. Attia

Theses and Dissertations

Cities are under more pressure than ever to use sustainable methods for managing water and other resources because of urbanization, climate change, and a lack of water. Standard greywater treatment systems (SGTSs) work well, but they use a lot of resources and don't provide a lot of ecosystem services. Greywater-treating green roofs (GTGRs) have emerged as a promising Nature-Based Solution (NBS), combining wastewater recycling with benefits like regulating temperature, reducing greenhouse gas (GHG) emissions, and reducing the urban heat island (UHI) effect. Even with this potential, there is still not enough real-world research on how GTGRs affect both the economy …

Emergency-Use Vaccine Mandates And Bodily Integrity: Assessing The Validity Of Proportionality Test In Legal Frameworks, Eman Hussien Khalil

Theses and Dissertations

Courts confronting emergency-use vaccine mandates during pandemics have revealed that existing legal frameworks are not equipped to handle the emergency context, as seen in their inconsistent description of government measures and their limited capacity to integrate evolving scientific developments on EUA vaccines into proportionality analysis. This thesis argues that when mandates concern Emergency Use Authorized COVID-19 vaccines, courts must abandon the formalistic distinction between “mandatory” and “compulsory” measures and instead focus on whether the practical consequences of non-compliance remove an individual’s genuine choice; where they do, the measure is coercive in substance and triggers the examination of proportionality. Drawing on …

Gender, Integration, And Labor Market Access: The Case Of Syrian Refugees In Germany, Feras Al-Mekhlafy

Theses and Dissertations

Germany hosts one of the largest populations of Syrian refugees in Europe, making their successful labor market integration critical for social and economic stability. This study investigates the gender gap among Syrian refugees in Germany within the broader refugee–native labor market gap. Using cross-sectional data from the 2022 SOEP refugee survey, it applies a Heckman two-step selection model to jointly analyze employment and wage outcomes while correcting for selection bias. Results reveal that structural barriers (e.g.: legal and bureaucratic) and compositional factors (e.g.: human capital) rather than wage discrimination drive most observed disparities. Female refugees face significantly lower employment probabilities, …

Global Public Health Feasibility: Digital Dentistry In Geriatric Population, Merna Amr Saleh

Theses and Dissertations

Oral health is a critical yet often overlooked determinant of well-being among older adults in Egypt, where mobility limitations, geographic barriers, and low awareness of preventive practices exacerbate dental disparities. DentalPal, a teledentistry-based mobile application, was developed to provide older adults with remote dental consultations, oral hygiene advice, and triage guidance. The platform enables users to submit oral photographs or radiographs for assessment, seek second opinions, and initiate follow-up chats directly with the healthcare provider. This flexible design allows users to access dental consultations on demand while ensuring continuity of care The question that guided this study was how older …

Facebook Interaction As A Potential Marker Of Cognitive Decline: Pilot Study, Esraa M. Qansuwa

Theses and Dissertations

One of the critical challenges in brain disorder research is the early identification of individuals with mild cognitive impairment (MCI) who may later develop Alzheimer’s disease (AD) or other dementias. MCI in older adults is frequently associated with diminished social engagement and observable behavioral changes. With the rapid expansion of social media platforms and advances in Machine Learning (ML), digital traces from online activity present a novel and scalable avenue for mental health screening. In particular, predictive ML approaches have demonstrated strong potential in building reliable classifiers for early detection of neurocognitive decline. This study introduces an innovative framework that …

The Role Of Formal And Informal Institutions In Shaping The Challenges Faced By Social Entrepreneurs: A Cross-Country Analysis Between Egypt And Tunisia, Mirna Magdy Saleh

Theses and Dissertations

This study explores how formal and informal institutional contexts influence social entrepreneurs in Egypt and Tunisia; Tunisia is characterized by legal recognition and a framework governing social enterprises, whereas Egypt does not have a legal framework. Both countries are characterized by prolonged political uncertainty and high levels of informality. Utilizing Institutional theory as the main conceptual framework, the study explores how different contextual factors shape the challenges and opportunities faced by social entrepreneurs. Drawing on qualitative data from founders of social enterprises and experts in the field from both countries, this research aims to identify how institutional regulatory voids, normative …

Metal-Free Nitrogen-Enriched Graphitic Carbon Nitride Architectures For Advanced Supercapacitor Energy Storage: Design, Synthesis, And Electrochemical Performance Optimization, Loujain Gamal Mohamed

Theses and Dissertations

Abstract

This thesis addresses the urgent global requirement for efficient energy storage materials by developing and characterizing advanced graphitic carbon nitride (g-C3N4)-based electrode materials for supercapacitors. A facile, low-cost thermal polymerization method produces 2D nitrogen-rich GCN nanosheets exhibiting excellent electrochemical stability and wide voltage windows, enabling symmetric devices with 19.33 Wh/kg energy density and remarkable cycling stability over 21,000 cycles. To overcome intrinsic limitations of pristine GCN, a 3D/2D metal free composite with bio-derived carbon (Bio-Cx) is synthesized, delivering high capacitance, wide potential windows, and ultrahigh energy density of 53.72 Wh/kg in asymmetric configurations paired with mesoporous nitrogen-doped carbon (MPNDC). …

Duties To The Self (Body And Mind), Rasha Essam

Theses and Dissertations

This thesis contends that self-duties are of vital significance, representing the obligations we owe to ourselves, and examines them through different life phenomena. Chapter One defends the existence of self-duties against a challenge raised by an (alleged) paradox. Chapters Two and Three then explore two particular self-duties related to the body and the mind, analyzed through the philosophical notions of self-objectification and moral testimony. Each chapter elaborates on these concepts with detailed real-life examples that illustrate how such experiences can undermine one’s humanity—as preserving one’s humanity is a core duty toward oneself. The purpose of this thesis is not only …

The Mind Has A Firewall: An Attempt To Preserve Human Mind Integrity., Sayed G. Batran

Theses and Dissertations

This thesis argues for the recognition of mind integrity as a distinct human right. It contends that existing protections, such as bodily integrity, privacy, and freedom of thought, are no longer sufficient to shield an individual’s mental domain from new forms of external interference enabled by neurotechnology, artificial intelligence, and pervasive data-driven systems. Mind integrity is defined as the right to govern one’s own mental life—to form, revise, and hold thoughts, beliefs, and desires based on reasons one endorses—free from significant, non-consensual interference or manipulation, regardless of the method used. The thesis first identifies concrete risks and regulatory vacuums by …

Assessing Public-Sector Readiness For Artificial Intelligence In Egypt, Renad Ahmed Anwar

Theses and Dissertations

Artificial intelligence (AI) is increasingly adopted in public-sector contexts, yet successful implementation depends on organizational readiness, particularly in developing countries. This study assesses the readiness of Egypt’s public sector for AI adoption using a qualitative expert opinion methodology. Semi-structured interviews were conducted with senior professionals from global technology firms with extensive experience working with public-sector entities in Egypt.

Guided by by an integrated framework combining organizational readiness theory, the Technology–Organization–Environment (TOE) framework, and public value and governance perspectives, the study examines strategic, organizational, human, technological, societal, and governance dimensions of AI readiness. The findings indicate that while Egypt demonstrates strong …

Comparative Evaluation Of Conventional And Sustainable Concrete Protective Coatings: Performance, Economic, And Environmental, Andro Ebrahim

Theses and Dissertations

Concrete structures are highly susceptible to deterioration from environmental, chemical, and mechanical factors, making protective coatings essential for ensuring durability and reducing maintenance demands. This study aims to compare and evaluate conventional and innovative coating systems for concrete protection across three dimensions—technical performance, environmental sustainability, and life cycle cost efficiency—and to assess whether coatings often regarded or marketed as sustainable genuinely achieve sustainability across these three pillars. Four representative coatings were selected for assessment: epoxy solvent-based, epoxy solvent-free, acrylic water-based, and cementitious. Technical performance was examined through laboratory testing, expert interviews, and multiple real project cases, providing a comprehensive understanding …

Uncovering Potential Therapeutic Targets For Spinal Cord Injury; Insights From Single-Cell And Cross-Species Transcriptomics, Sara Samy Abouzekry

Theses and Dissertations

Central nervous system (CNS) injury remains a devastating healthcare problem. Despite years of research, it remains almost impossible to achieve meaningful functional repair following traumatic brain injury (TBI) and spinal cord injury (SCI). Spinal cord injury (SCI), a highly devastating subset of CNS trauma, is considered a challenge due to the extremely limited regenerative capacity of the nervous system in adult mammals. In contrast, certain species display remarkable repair abilities followed by moderate regenerative ability in neonatal mammals, indicating that regeneration is shaped by the evolutionary context as well as the developmental age.

To uncover the core molecular mediators of …

Two Decades Since Cms V. Argentina: Concession Contracts, Necessity Doctrine, And The Imf’S Impact On Sovereign Economic Governance, Esraa S. Saied Abdallah

Theses and Dissertations

In the evolving landscape of international trade, particularly within the framework of Bilateral Investment Treaties (BITs), the primary aim has been to promote and protect foreign investment. The 1980s witnessed a notable increase in investment treaties, coinciding with a global shift toward privatization that was significantly influenced by the impact of international financial institutions, including the International Monetary Fund (IMF) and the World Bank. By the 1990s, BITs had evolved to offer specific guarantees aimed at reducing the risks foreign investors faced in host states. However, despite the growth and transformation brought about by foreign investments, disputes arising under investment …

The Impact Of Violent Content Media Exposure On Behavioral Outcomes: The Mediating Role Of Media Engagement, Melissia Emad Eskander

Theses and Dissertations

This study explores how repeated exposure to violent content in films, television series, and video games may influence behavioral outcomes among Egyptian media consumers. Drawing on the General Aggression Model, Social Learning Theory, and Cultivation Theory, it examines how individual interpretation, emotional involvement, and narrative absorption mediate the effects of media violence. It also considers how personality traits shape audience responses, specifically aggression, empathy, and narrative immersion.

A mixed-methods approach was adopted. A structured survey of 200 Egyptians aged 18 and above assessed media exposure, aggression, empathy, narrative engagement, and behavioral outcomes. In parallel, a content analysis of Egyptian films …

Greenhouse Gas Emissions And Stock Market Volatility In The Eurozone: Evidence From Sectoral Structure And Climate Policy, Toulin Mohamed Albostany

Theses and Dissertations

This study examines the relationship between greenhouse gas (GHG) emissions and stock market volatility in the Eurozone from 2000 to 2023. The analysis is driven by increasing concerns regarding climate related financial risks, investigating whether various types of emissions induce financial market instability and whether this relationship is influenced by the economic frameworks and climate policy contexts. Utilizing annual panel data from 20 Eurozone countries, stock market volatility is assessed by a Dynamic Conditional Correlation Generalized Autoregressive Conditional Heteroskedasticity (DCC-GARCH) framework, which accounts for time-varying volatility and inter-market dependence. The empirical strategy integrates pooled OLS, fixed-effects models, and instrumental-variables Generalized …

In Her Words: The Silent Battles Of Egyptian Women With Breast Cancer, Nada Mohamed Ahmed Hassan Nh

Theses and Dissertations

This study investigates the emotional, social, and economic difficulties encountered by Egyptian women from middle- to working-class origins after a breast cancer diagnosis. Despite being a worldwide health concern, local cultural, institutional, and economic circumstances have a significant impact on the lived consequences of breast cancer. Women's post-diagnosis experiences in Egypt are greatly exacerbated by deeply ingrained gender stereotypes, stigma associated with cancer, and systemic injustices in the healthcare system. This research emphasizes women's situated knowledge and views their bodily experiences as crucial sources of insight into larger societal power relations. It is based on feminist perspective theory, especially the …

Development Of A Novel Innovative Umbrella Falsework System For Concrete Slabs, Abdelazem Hashim

Theses and Dissertations

Formwork is one of the major elements that contribute to the cost and duration of concrete building projects. This is why optimizing such an element can lead to huge savings to all parties involved in the construction projects. With contractors facing huge challenges in such a competitive industry and employers seeking the least price and least duration for their projects, contractors are constantly under the obligations of finding the best alternatives to deliver their projects in terms of both time and money. Therefore, the main aim of this research project is to develop a falsework system, where the falsework system …

Sustainable Construction Materials In The Middle East: Model Development For Materials Selection, Taha Ahmed Omar Madu

Theses and Dissertations

The construction industry, a major driver of economic development in the Middle East, is simultaneously a leading contributor to carbon emissions, resource depletion, and environmental degradation. Amid rapid urbanization in countries such as Egypt, Saudi Arabia, and the United Arab Emirates, the adoption of sustainable construction materials has emerged as a critical strategy for mitigating environmental and societal impacts while advancing regional development objectives. This thesis is organized along two interrelated directions: first, it delivers a comprehensive assessment of the current adoption, challenges, and opportunities associated with the use of sustainable construction materials across the three target countries; second, it …

Perceptions Of Healthcare Access Barriers Among Eritrean, Sudanese, And Somali Refugees And Asylum Seekers In Cairo., Ayan Musa Mohamed

Theses and Dissertations

As the world witnesses an increase in different displacements of individuals for various reasons, ranging from wars, civil conflicts, human rights violations, and natural disasters, refugees and asylum seekers, who are among those forcibly displaced, continue to face challenges in access to health care services in host countries. The topic of barriers to health care has been widely researched, with a large body of literature on refugees' interactions with health care systems. However, there is limited literature on the perceptions of Eritrean, Sudanese, and Somali refugees and asylum seekers' experience with healthcare access in host countries. Therefore, this thesis aims …

Assessing Knowledge, Attitudes, And Practices (Kap) Towards The One Health Approach In Governmental Officers In Egypt, Nour Elsersawy

Theses and Dissertations

Background: the one health (OH) approach emphasizes the interconnectedness among human, animal, and environmental health and requires multisectoral collaboration to address complex health challenges. Egypt faces significant threats at the human-animal-environment interface, including endemic and emerging zoonotic diseases, antimicrobial resistance (AMR), food safety challenges, and vector-borne diseases. Despite established coordination mechanisms and the launch of the One Health National strategic framework (2023-2027) of Egypt, the extent to which oh principles are understood, embraced, and practiced by governmental officers responsible for implementation remains incompletely understood. Objectives: this study assessed and evaluated the knowledge, attitudes, and practices (KAP) regarding the one health …

Proposed Modifications To The Egyptian Concrete Code Based On A Comprehensive Sustainability Assessment Of Portland Cement Alternatives For Climate Change Mitigation, Yasmin Elhakim

Theses and Dissertations

Climate change is a major challenge facing planet earth today. This phenomenon is foreseen to continue to represent a major concern for decades to come. The construction industry is one of the most polluting sectors worldwide and is considered one of the top greenhouse gas emitters. Egypt, in particular, is one of the most vulnerable countries to the adverse effects of climate change. The construction sector plays a major role in Egypt’s economy, contributing significantly to the national GDP, yet it also represents one of the country’s largest greenhouse gas emitters. However, the Egyptian Concrete Code does not enforce the …

Exploring Artificial Intelligence Governance In Higher Education: Policy Design, Implementation And Adaptability In Egypt, Rolane Eissa

Theses and Dissertations

The rapid adoption of artificial intelligence (AI) in higher education (HE) underscores the need for effective governance frameworks that ensure ethical use and academic integrity. Despite increased policy attention, universities face significant challenges in translating AI governance (AIG) principles and policies into coherent, practical practices within complex organizational settings. Existing research on AIG remains conceptual and focused on the Global North. It offers limited empirical insight into how AI policies are interpreted and enacted at the institutional level, particularly in HE systems in the Global South. This study addresses these gaps by examining AIG in Egyptian universities, thereby providing empirically …

Self-Medication And Pharmaceutical Dispensing In Egypt: Practices, Policies, And Regulatory Challenges, Lobna Fawzy Ali Shaheen

Theses and Dissertations

Access to safe and appropriate medications is a critical component of public health, particularly in low- and middle-income countries. In Egypt, self-medication and informal pharmaceutical dispensing have become deeply embedded practices shaped by systemic, economic, and cultural factors. This research explores the complex interplay between self-medication behaviors, pharmaceutical regulation, and healthcare access in Egypt. Through qualitative interviews with policymakers, pharmacists, physicians, industry professionals, and citizens, the research uncovers widespread informal dispensing of prescription-only medicines, driven by high out-of-pocket costs, limited insurance coverage, and high public reliance on pharmacists as primary care providers. Despite the presence of regulatory frameworks, weak enforcement, …

Investigating Tau Pathology In The Retina And Anterior Segment Structures Of The Eye In A 3-Nitropropionic Acid–Induced Tauopathy Mouse Model, Mohamed Sayed Ahmed Abdel-Kader Qasem

Theses and Dissertations

Background and Objectives: Alzheimer's disease, the most prevalent neurodegenerative disorder in older adults, is characterized by accumulation of hyperphosphorylated tau and amyloid-beta (Aβ) plaques in the central nervous system. Given the retina's shared embryological origin with the brain, its direct neural connectivity via the optic nerve, and similarities in vasculature and age-related degeneration patterns, retinal pathology may serve as an early, non-invasive biomarker for Alzheimer's disease. This study employed 3-nitropropionic acid (3NP) as a pathway-specific tauopathy model driven by mitochondrial dysfunction. The study particularly aimed to investigate whether retinal and corneal tau pathology reflects underlying tau-related neurodegeneration triggered by …