Digital Commons Network^™

Tunable 3d-Printed Biomaterials For Perfused In Vitro Models Of The Blood-Brain Barrier, Louis Salvatore Paone

Theses and Dissertations

In vitro models have tremendous utility for improving our understanding of complex physiological and pathophysiological processes in a more controlled environment than animal models, in addition to incorporating human cells to overcome species-specific disparities. This dissertation describes innovations in biomaterial-based fabrication processes that advance in vitro models of the blood-brain barrier, providing the opportunity to evaluate the effects of cell-matrix interactions on barrier integrity, additives to reduce viscous drag of blood flow, and molecular mechanisms underlying the cellular response to amyloid beta in the context of Alzheimer’s disease. The core technology underlying this advance is a biomaterial compatible with digital …

Using Facial Landmarks For Lip Motion Interpretation Applications, Kimi S. Wright

Theses and Dissertations

Facial motion, particularly lip movement, carries rich information about human speech that can be leveraged for a variety of computer vision and speech-processing tasks. Unlike other pixel-based methods, this work investigates the use of facial landmarks as a compact, privacy- preserving, and computationally efficient representation for lip-motion analysis. We evaluate landmark-based models across multiple tasks, including visual voice activity detection (VVAD), lip–audio synchroniza- tion, and visual speech recognition (VSR) for liveness detection. Using LRS3-VVAD1 and LRS22 datasets, we demonstrate that landmark-only models can achieve performance comparable to pixel-based systems for VVAD and synchronization, while significantly reducing parameter counts and inference …

Combinatorial Therapeutic Strategies To Combat Multidrug-Resistant Acinetobacter Baumannii, Tope A. Aderibigbe

Theses and Dissertations

Acinetobacter baumannii is an opportunistic Gram-negative pathogen that poses a significant global health threat due to its remarkable ability to acquire multidrug (MDR) and extensively drug-resistant (XDR) phenotypes. Therapeutic failures are increasingly common as strains develop resistance to nearly all available antibiotics, including carbapenems, polymyxins, and tigecycline, leaving clinicians with limited treatment options. This study aimed to investigate combinatorial therapeutic approaches capable of revitalizing antibiotic efficacy against MDR/XDR A. baumannii clinical isolates. We evaluated the synergistic potential of durlobactam-sulbactam in combination with twelve commonly used antibiotics, including amikacin, rifampin, tobramycin, tigecycline, cefiderocol, and others. Initial screening using the disc diffusion …

Mscl-X: Meta Supervised Contrastive Learning With Gaussian Prototypes For Robust Few-Shot Open-Set Modulation Classification, Emmanuel Mawuli Agbator

Theses and Dissertations

Automatic modulation recognition has found its way into the core modern-day wireless communication systems whereby intelligent receivers estimate signal formats without any prior coordination with the transmitters. Challenging situations arise in any working radio frequency environment for the conventional modulation recognition systems due to insufficient labeled data, rapidly fluctuating channel conditions, and appearance of plenty other unseen modulation types. Taken together, these challenges raise questions concerning the ability to institute learning frameworks that could perform well on few-shot and open-set conditions. Hence the thesis attempts to address the same by proposing two complementary learning-based frameworks for few-shot open-set modulation recognition …

Deciphering Feup–Feuq Signaling: Mechanistic Analysis Of A Newly Identified Regulatory Module In Agrobacterium Tumefaciens, Michelle Charae Brock

Theses and Dissertations

Two-component systems (TCS) are widespread signal transduction pathways that enable bacteria to sense and respond to environmental changes with precision. TCS are fundamentally important to prokaryotes because they provide a rapid and efficient means of converting environmental stimuli into coordinated cellular responses. Unlike eukaryotes, which rely on multilayered signaling cascades and compartmentalized organelles, bacteria must interpret and react to changing conditions directly at the cell envelope. TCS allow prokaryotes to detect shifts in nutrients, osmolarity, pH, redox status, host-derived antimicrobials or competing microbes. This forces an immediate adjustment in gene expression programs to promote survival. Agrobacterium tumefaciens, a model organism …

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 …

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 …

Under The Guardianship: Experiences Of Mothers In Egypt’S El Nayaba El Hesbaya, Hana Khayry

Theses and Dissertations

This thesis explores the intersectional lived experience of El Nayaba El Hesbaya in Egypt. El Nayaba El Hesbaya, operating under Law 119/1952, is the administrative and judicial body responsible for overseeing the financial and legal affairs of minors whose father or mother had passed. Hundreds of thousands of mothers in Egypt have (had) children under the guardianship of El Nayaba El Hesbaya. This research delves into the experience of mothers whose children are or were under the guardianship of El Nayaba El Hesbaya, examining how it shape(s/d) their everyday life as women, mothers, widows or ex-wives, citizens, and legal subjects. …

Securing Or Securitizing? Unveiling The Role Of Securitization “Audience” In Israel’S 2007 Bombing Of The Syrian Nuclear Site., Dunia Essam Hassanin

Theses and Dissertations

This thesis examines the 2007 Israeli bombing on Syria's Al-Kibar nuclear reactor through the lens of securitization theory, concluding that intelligence served as crucial audiences in legitimizing the operation. Building on the Copenhagen School's paradigm, which defines securitization as the process by which actors build issues as existential threats necessitating extreme measures, this study fills a critical theoretical gap: the underdeveloped role of the audience. While classic formulations focus on public approval, this study suggests a more sophisticated notion of the Political Intelligence Audience: intelligence agencies that validate and operationalize securitization moves. The concept contends that groups such as the …

The Effectiveness Of Public-Private Partnerships In Addressing Residential Urban Development Challenges In Greater Cairo, Sara Nagy Abdelmessih

Theses and Dissertations

This research explores the effectiveness of Public-Private Partnerships (PPPs) in tackling the residential urban development challenges facing Cairo today. In the past two decades, PPPs have emerged as a dominant mode of housing production, positioned as collaborative ventures between state agencies and private developers. They have become integral to the expansion of Greater Cairo, producing vast new urban extensions under the promise of mobilizing private capital, technical expertise, and delivery capacity. Yet, questions remain about whether these arrangements genuinely address Egypt’s most urgent housing needs, or whether they reproduce market-driven logics that leave large segments of the population excluded.

The …

Law And The (Re)Production Of Class Hierarchies In Egypt, Ahmad Abdelnaby

Theses and Dissertations

This thesis investigates how Egypt’s legal system, structurally tilted toward the elite and constitutive of inequality, has interacted with the country’s entrenched culture of class-based discrimination to produce a legal culture uniquely comfortable with hierarchy. It contends that class-based discrimination in Egypt has evolved from a social prejudice into a juridical condition, one in which the law does not merely mirror inequality but actively constructs and rationalizes it. By examining the intersection between legal structure and Egypt’s entrenched moral order of class-based discrimination, the study reveals a legal culture that no longer hides its hierarchies behind the veil of neutrality …

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 …

Scalable And Fault-Tolerant Network Architectures For Real-Time Video Transmission In Industrial Networked Control Systems, Moustafa Awad

Theses and Dissertations

This thesis addresses the challenge of transporting supervisory video alongside time-critical control traffic in industrial Networked Control Systems (NCS) without violating stringent real-time constraints. A simple yet scalable network architecture is developed and evaluated for a plant-level deployment comprising three interconnected workcells with sensors, controllers, actuators, and cameras. The design explicitly accommodates bandwidth-intensive video streams while preserving the responsiveness of watchdog/control traffic. Analytical delay modeling decomposes end-to-end latency into transmission, propagation, processing, and queuing components, and Riverbed-based simulations are used to validate the model under realistic mixed-traffic conditions. A traffic-engineering strategy - phase-shifting supervisory camera transmissions - effectively desynchronizes frame …

The Impact Of Environmental Communication On Consumer Behavior: The Mediating Role Of Ascription Of Responsibility And Attitude, Nada Hussam El-Maghraby

Theses and Dissertations

The current study aims to examine the effect of environmental communication on promoting pro-environmental behaviors (PEBs) in the Egyptian society. The study also tests the mediating roles of ascription of responsibility and attitude toward pro-environmental behavior on the examined relationship. Another aim of the study is to explore intention as a mediator in the relationship between attitude toward pro-environmental behavior and behavior. The research is based on the Norm Activation Theory (NAT) and the Theory of Planned Behavior (TPB). A mixed-methods approach was implemented in this study. Quantitatively, a survey was conducted, and 406 responses were collected using convenience sampling …

Lived Experiences Of Limited Sexual And Reproductive Health Education Among Egyptian Women, Nada Abdelhamid

Theses and Dissertations

In Egypt, sexual and reproductive health (SRH) education remains largely absent from national education and youth policy frameworks, reflecting a broader governance gap at the intersection of education, health, and gender policy. This qualitative study explores how the lack of formal sexuality education shapes women’s knowledge, perceptions, and sexual and reproductive experiences across the life course, drawing on in-depth interviews with twelve Egyptian women from diverse marital backgrounds. The findings point to persistent gaps in basic SRH knowledge, early exposure to shame and stigma, and reliance on informal and often unreliable sources of information, which participants linked to fear of …

Egyptian Feminist Critiques Of Neoliberalism, Asmaa Elmalky

Theses and Dissertations

This research examines Egyptian feminist critiques of neoliberal economic policies through a Third World feminist and feminist political economy framework. It argues that neoliberalism in Egypt has produced controlling power dynamics through restructuring labor markets, social reproduction, and legal systems in ways that disproportionately impoverish women, particularly working-class women. The research maps diverse feminist engagements with neoliberal reforms, including structural adjustment programs, privatization, labor reduction, and legal liberalization. These critiques were influenced by the debates between Third World and transnational feminism, the thesis emphasizes the importance of national specific analysis in understanding how global neoliberal policies are mediated through national …

Refugees In Egypt: State Framing, Ministerial Narratives, And The Politics Of Representation On Social Media, Habiba Kohail

Theses and Dissertations

This study examines Egyptian government discourse on refugees in 2024, a year characterized by heightened regional displacement and the enactment of Egypt’s first Asylum Law (Law No. 164 of

2024). Using a multidisciplinary framework that combines framing analysis with van Dijk's socio-cognitive approach, the study systemically analyzes how the government construct refugees on social

media and sets the boundaries of their inclusion in Egypt.

The thesis analyzes the Egyptian government discourse on refugees across official social media platforms from January 1, 2024, to December 31, 2024, a period that witnessed an increase in the government engagement in the refugee issue …

Political Party Leaders’ Branding: The Case Of The Uk Conservative & Labour Parties, Dania Akkawi

Theses and Dissertations

Political party branding has become increasingly shaped by digital communication, particularly through social media platforms where voters actively engage with political leaders and one another. This thesis studies “Political Party Branding: The Case of the UK Conservative & Labour Parties”, focusing specifically on the interconnections between Stakeholder Theory and Emotional Branding Theory on voter opinion and voter interest, during the 2024 UK general election. Through a comparative analysis of Rishi Sunak (Conservative Party) and Keir Starmer (Labour Party), the study tests theoretical propositions drawn from the theories to assess how visibility and emotional intensity shape voter opinion and interest. Using …

Navigating Radical Indeterminacy In The Struggle For A Global Collective Consciousness: The Question Of Eco-Justice And Law Or Universalize The Pluriverse: A Manifesto, More Or Less, Omar Auf

Theses and Dissertations

The processes of interpretation, communication, and re-interpretation leads to the emergence of an approximated collective consciousness, for which it may be struggled and contested by hegemonic. The dominant forces of this contest, capitalism and nationalism, lead to an interdivided world: one that possesses the tools to empathize with each other but is instead leading people to keep their heads down and focus on surviving their own contexts, perceived as existing within different historical times on the same timeline. This leads to legal and justice systems that fail their claim to universality and/or impartiality. Incorporating an ecological lens to justice within …

On Education-Occupation And Skill-Occupation Mismatches Among Generation Z In Egypt, Hamsa Mohamed Ebrahim Yousef Ebrahim

Theses and Dissertations

This thesis examines the impact of education-occupation and skill-occupation mismatches, specifically with regard to Generation Z in Egypt, with a focus on prevalence, socioeconomic factors, and their impact on youth employability and human capital utilization. The research examines education and skill mismatches through a quantitative approach, relying primarily on quantitative analysis of the Egypt Labor Market Panel Survey (ELMPS) 2023 data using multinomial logistic regression for education mismatches and probit regression for skill mismatches. The results indicate that education and skill mismatches are common among employed Gen Z, with a considerable percentage of 38-45%. This is despite the fact that …

Stories Take A Life Of Their Own: Exploring The Metoo Movement In Egypt, Menatallah Salama

Theses and Dissertations

This thesis explores the unfolding of Egypt’s MeToo movement through the stories that emerged in the wake of the 2020 Ahmed Bassam Zaki case. Rather than framing this moment as a rupture or a crisis, it seeks to situate it within a longer genealogy of feminist resistance, digital activism, and everyday acts of speaking out and silencing. At the heart of this work is the question: what does it mean for a story to take a life of its own? Stories here are not fixed entities but rather living actants—capable of forming solidarities, generating intensities, and unsettling hegemonic narratives. Drawing …

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 …

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). …

The Impact Of Universities’ Social Media Content And Digital Brand Equity On Potential Students’ Perception, Engagement And Trust: The Case Of Egyptian Private Universities, Mahy Shoukry

Theses and Dissertations

Universities are increasingly using social media platforms as tools for marketing, brand building, and student engagement as a result of the digital transformation in higher education. This study investigates how prospective students' perceptions, levels of engagement, and trust are impacted by universities' digital brand equity and social media content. This study attempts to close the knowledge gap on how visual and user-generated information influences the decision-making processes of potential students, given the competitive environment among Egyptian private institutions. Particular focus is placed on how authenticity, video content, and images influence educational institutions' online appearance and reputation. The methodology used a …

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 …

Examining The Science Of Reading Focusing On Phonemic Awareness And Multicultural Literature To Enhance Reading Achievement Among African American Students, Danielle L. Gantt

Theses and Dissertations

This mixed-methods action research study examined how implementing the CKLA, Core Knowledge Language Arts, curriculum, founded in the science of reading, enhanced the reading achievement among first-grade African American students. The purpose of the study was to explore how phonics instruction, specifically phonemic awareness, and multicultural literature would improve literacy. The study was guided by Ivankova’s six-phased mixed methods model integrating quantitative and qualitative data. The quantitative data collected included the DIBELS, Dynamic Indicators of Basic Early Literacy Skills, benchmark and progress monitoring assessments. The qualitative data included student work samples, multicultural literature lessons, and open-ended student responses. The quantitative …

Legal Reform And Cultural Resistance: Examining The Role Of Law And Custom In Ending Fgm In Egypt, Souhaila Hafez Abo Seada

Theses and Dissertations

This thesis examines the persistent gap between legal reform and social practice in efforts to end Female Genital Mutilation (FGM) in Egypt. Although FGM has been criminalized since 2008, with stronger penalties introduced in 2016 and 2021, the practice continues, revealing the limits of law when it operates alongside powerful social, religious, familial, and medical norms. Using a qualitative case-based approach grounded in legal pluralism and Feminist Critical Discourse Analysis, the study draws on 11 semi-structured interviews with participants from civil society, religious institutions, the legal profession, the medical sector, and communities where FGM persists, alongside legislative, demographic, and documentary …

“Language Learners As Ethnographers: A Case Study On A Pedagogical Approach To Developing Intercultural Communicative Competence”, Nihal El-Gameel

Theses and Dissertations

Despite the extensive theoretical models and frameworks for Intercultural Communicative Competence (ICC), pedagogical approaches to teaching culture remain underexplored. This study examined the effectiveness of integrating a pedagogical framework—the OSEE framework developed by Deardorff (2000)—within a language classroom context. Using a mixed-methods approach, data were collected through audio-recorded reflections, a questionnaire, an interview, and a final project video presentation in a single-case study design. Data analysis followed Miles and Huberman’s (2014) model of qualitative analysis, employing a funneling approach tailored to each research question: the first applied Chen and Starosta’s ICC model (1996;1999) the second used deductive thematic analysis to …

Assessing The Effectiveness Of A Habit Recording Tool To Improve Mental Health Of University (Auc) Students, Noran Nounou

Theses and Dissertations

Introduction: According to previous research, the mental health of university students has become an alarming public health concern worldwide. Most of the mental disorders begin among young adults, attributed to the transition to university and increased financial and societal pressure. Despite the important effect of daily habits on mental health, there still remain research gaps in Egypt in exploring their effect among university students and exploring the potential opportunities to support their well-being. Objectives: To assess depression rates among AUC students and to evaluate the effectiveness of a newly designed habit recording board, Make an Impact (MAI) to improve depression …