Activity Descriptors As Tools For Designing Highly Efficient Electrocatalysts For Water Splitting, Aya Gomaa

Theses and Dissertations

There is an uprising urge to design efficient, active, and durable catalysts to achieve sustainable hydrogen production. The unambiguity of which material should be used pushed the scientific community to devote enormous efforts in exploring different elements with different ratios on trial and error bases. However, the bridge between the theoretical calculation and the experiments introduced a new realm of designing efficient catalysts by introducing the concept of activity descriptors. In the first part of the thesis, the ability to convert waste stainless steel (SS) 316L meshes into highly efficient and durable oxygen evolution reaction (OER) catalysts is demonstrated. The …

Peace-Building And Stability After Civil Wars: The Cases Of Angola And The Democratic Republic Of The Congo, Ali Elsharkawy

Theses and Dissertations

Why do some rebel groups successfully establish stable and sustainable states after civil wars, while others fail? Angola and the Democratic Republic of the Congo are two African countries that experienced long and bloody civil wars. Despite the commonalities, the two cases strongly diverged in the political outcomes after civil war. Angola successfully made the transition to stability and prosperity, while the DRC slipped back into violence. This thesis compares and contrasts between the two peace- building processes in both countries. The results illustrate that two main variables made the difference between the two cases, the geography of the capital …

Private Sector’S Perceptions And Adoption Of The E-Invoicing System In Egypt, Riham Mohamed Soliman

Theses and Dissertations

This study explores the private sector’s perceptions and adoption of the mandated e-invoicing system, a key component of Egypt’s digital tax system. Twenty-three qualitative semi-structured interviews with the private sector to answer the research question: How does the private sector perceive the mandatory e-invoicing system adopted by the Egyptian government? Furthermore, the study explored the perceived impact of the Unified Theory of Acceptance and Use of Technology (UTAUT)’s four aspects on the private sector’s perceptions and adoption of the system, including performance expectancy, effort expectancy, social influence, and facilitating conditions. The study’s findings show that all respondents confirmed the four …

The Impact Of Rentietrism On Authoritarian Durability In The Gulf, Nadine Shawki

Theses and Dissertations

ABSTRACT

Ever since its discovery, oil and its rents have strongly impacted the development of the Gulf states. The debate on whether oil has been a blessing or a curse to those states has been a prevailing topic in the literature, with an abundance of available data on the relationship between the durability of authoritarianism in the Gulf region and rentierism. The literature has long claimed that the legitimacy of Gulf rulers is secured through rent distribution, a concept known as Rentier State Theory (RST). With the leaders of Gulf nations being the “owners” of the oil reserves, they have …

Fast And Accurate Automatic Design Of Spiral Inductors From High-Level Specification, Heba Ismail

Theses and Dissertations

Integrated on-chip planar spiral inductors are widely employed in communication circuit blocks and other various electronic devices, thus becoming an essential passive component of RF integrated circuits (RFICs). A common vital spiral inductor design problem is determining the optimum layout parameters of spiral inductors that yield the desired inductance value and achieve highest quality factor at the intended operating frequency. Various approaches tackle this difficulty, but the most prevalent approaches for designing inductors are using an electromagnetic simulator or a library of pre-designed inductors. The latter approach requires an extensive amount of time and computational resources, whereas the former restricts …

A Story Of State Transformation In The Global South: Limited Statehood And Governance In Post-Syria Lebanon, Jodor Jalit

Theses and Dissertations

This research thesis analyzes security governance in areas of limited statehood in the context of state transformation. Specifically, it examines the impact of the 2005 Syrian military withdrawal on the Lebanese state in the realm of security. Briefly, the thesis unveils the coexistence of state and non-state groups and the engagement of non-state actors in state-like practices. That is, it assesses the impact of the 2005 Syrian military withdrawal on the Lebanese state to reveal the relationship its new configuration, relationship with non-state actors, and emerging governance practices. In that sense, this thesis pretends to contribute to the larger body …

Shape Memory Alloy Capsule Micropump For Drug Delivery Applications, Youssef Mohamed Kotb

Theses and Dissertations

Implantable drug delivery devices have many benefits over traditional drug administration techniques and have attracted a lot of attention in recent years. By delivering the medication directly to the tissue, they enable the use of larger localized concentrations, enhancing the efficacy of the treatment. Passive-release drug delivery systems, one of the various ways to provide medication, are great inventions. However, they cannot dispense the medication on demand since they are nonprogrammable. Therefore, active actuators are more advantageous in delivery applications. Smart material actuators, however, have greatly increased in popularity for manufacturing wearable and implantable micropumps due to their high energy …

Equipmentality As A Pharmakon, Sherif Khalil

Theses and Dissertations

One must lose the world to know himself, if in his attempt to know the world he lost himself.

In this thesis, I argue that equipment is a pharmakon in that its harm lies in the service it is supposed to provide. Through equipment one gets to have a practical sense of the world. But, the world in this sense is a world for everyone and for no one in particular, that is, it is made to the measure of the average person who has no aspirations to realize his authenticity. That is how equipment helps us practically make sense …

Rebalancing The Scales: A Comparative Study Between Egyptian Contract Law’S Rules On Unequal Contracts And The American Unconscionability Doctrine, Yousef Samir Elnemr

Theses and Dissertations

Traditionally, contracts were envisioned as pacts struck between equals. Their enforcement was considered a form of honoring the free will and autonomy of the parties. This theoretical imagination is no longer valid today; the concentration of wealth and power in the hands of some individuals or institutions means they can name their terms and force the other party between taking or leaving it. When the need to contract is pressing, the weaker party is forced to accept any imposed terms. Thus, strict enforcement of contractual terms helps the powerful further their interests at the expense of their helpless partners. Today, …

Internationalization In Egyptian Higher Education: Two Case Studies From Public Universities, Esraa Mostafa

Theses and Dissertations

In an increasingly globalized world, internationalization has emerged as a promising global trend to contribute to a more interconnected and diverse academic environment. By examining the stakeholders’ perceptions of two joint programs, this study presents a balanced assessment of the quality of education in internationalized programs based on the dual nature of opportunities and barriers associated with internationalization. This study highlights a research gap in the internationalization process of the learning landscape in Egypt. Filling this research gap would offer insightful information to academics, institutions, and policymakers in the field of higher education within the Egyptian context. The study’s findings …

Academic Success In First-Year Engineering Students At Private Higher Education Institutions In Egypt: Key Factors, Wassim Alexan

Theses and Dissertations

This research aimed to identify the key factors contributing to the success of first-year engineering students at private higher education institutions (HEIs) in Egypt. It specifically examined how various independent variables influence the success of these students, measured as the dependent variable. By analyzing these relationships, the study seeks to pinpoint key success factors (KSFs) for first year engineering students in this specific educational context. The research work employed a mixed methods approach, utilizing both quantitative and qualitative research methods. The quantitative analysis involved collecting data through a survey administered to a sample of first year engineering students at private …

Examining Undergraduate Students’ Learning Transfer From English For General Academic Purposes (Egap) Courses To Discipline-Specific Courses, Sara Abdelkader

Theses and Dissertations

The principal aim of this study is to explore university students’ learning transfer from two English for General Academic Purposes (EGAP) courses into a variety of non-EGAP courses. The current study examines near and far transfer based on three dimensions of Barnett and Ceci’s (2002) transfer taxonomy. It investigates (a) the writing samples of undergraduate students from different majors, with a special focus on the transfer of five learning outcomes (LOs) namely: Sentence Structure, Essay Structure, Cohesion, Coherence, and Language Errors, (b) the impact of their majors on transfer, (c) their perceived transfer, and (d) their perceptions of the …

Navigating The Rules: Integrating Td3 And Sensor Fusion For Traffic-Aware Autonomous Vehicle Path Planning, Mahmoud Ayman Mohamed Elsayed

Theses and Dissertations

This work presents a novel algorithm for local path planning for autonomous vehicles (AVs) which prioritizes both safety and adherence to traffic regulations, addressing critical functions for AV navigation, such as navigating complex environments, avoiding obstacles, and ensuring passenger and road users safety. The algorithm integrates the Twin Delayed Deep Deterministic Policy Gradient (TD3) with sensor fusion based on Nvidia Convolutional Neural Network (NCNN). The study utilizes the CARLA simulator, and real-world datasets, including KITTI and WAYMO, to train and evaluate the proposed algorithm. The proposed algorithm leverages the complementary strengths of Imitation Learning (IL) and Deep Reinforcement Learning (DRL) …

Differential Elliptic Flow Analysis Of Hadrons With Different Wuark Content In Simulated Pp Collisions, Elhussein Osama

Theses and Dissertations

According to current physics theories, it is assumed that in the first microsecond after the big bang, the universe was in a state of matter called Quark-Gluon Plasma (QGP), where the fundamental consistent of matters (quarks and leptons), were highly energetic, and floating around freely. Searching for such phase of matter; as the possible earliest signatures after the big bang, and among many other interesting experimental measurements, the jet quenching and elliptic flow are the most important ones, in the heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC) experiments.

The azimuthal anisotropy …

Deciphering The Microbial Fingerprint Of Covid-19: A Multi-Layered Exploration Of The Oral And Gut Microbiome Dysbiosis, Iman Mostafa Sultan

Theses and Dissertations

The impact of SARS-CoV-2 infection on the human microbiome remains a dynamic and intricate puzzle. This study delves deeper into this mystery by revisiting the oral and gut microbial compositions of 53 COVID-19 patients before and after viral clearance, alongside comparisons to 76 healthy individuals. Through a comparative lens, we have emploed two distinct differential abundance methods – DeSeq2 and ANCOM – while drawing upon the thorough SILVA database encompassing the full-length 16S rRNA gene. The analysis underscores the crucial role of a diverse methodological choir in microbiome research. In certain instances, the congruence between DeSeq2 and ANCOM may exhibit …

Same Story, Different Narratives: The Influence Of Refugee Concerned Organizations On Egyptian Media, Shaimaa Gheith

Theses and Dissertations

It has been documented in the literature that media usually portrays refugees negatively, which affects how the public reacts to them. Consequently, organizations catering to refugees, referred to in this thesis as Refugee Concerned Organizations (RCOs), try to influence the media aiming to influence the public. So, they produce prepacked information and employ different communication tools. Using the agenda building theory, this research investigated the influence of communication tools used by RCOs on Egyptian media focusing on Facebook and news websites. Qualitative content analysis was conducted for 615 Facebook posts and 111 News reports and supplemented by semi-structured interviews with …

From Crypto-Muslim To Muslim Polemicist: The Self-Writing Of Aḥmad Ibn Qāsim Al-Ḥajarī, Paige Gibson

Theses and Dissertations

This thesis examines the self-writing of the Morisco writer Aḥmad ibn Qāsim al-Ḥajarī (b. 1569–1570) who fled his homeland in Spain for the Maghreb where he could live safely as a Muslim. While it may seem that the Moriscos were one static, monocultural group, studying them as individuals reveals the group’s diversity and complexity. Al-Ḥajarī is an excellent example of one Morisco writer who identifies more with the greater Muslim community than with the Iberian Moriscos. His most well-known work, Kitāb Nāṣir al-dīn, combines Arabic literary genres in order to create this self-portrait. Other Moriscos fought for their right to …

Historical Marker Plaques In Arkansas, Armando Arellano

Theses and Dissertations

Historical markers are made with a purpose of expanding the knowledge and recognition of individuals, events, or locations which are significant enough to contribute to the community. Historical markers should also stand firm to historical accuracy based on the verified and available scholarly resources. Historic preservation and manufacturing metal foundries have been a key element behind the process of historical markers, as they have been known for their recognition for historic significance. The recognition and remembrance of historical markers themselves, along with the historic preservation, has been a significant effort for the State of Arkansas, although it is not getting …

Effect Of Plumbagin On Chemo-Resistant Metastatic Retinoblastoma, John J. Soto

Theses and Dissertations

Retinoblastoma, which is an ocular malignancy, usually results in poor prognoses in pediatric patients worldwide. Retinoblastoma in some events, can develop metastatic phenotypes which can lead to secondary tumor formation, furthering deleterious patient outcomes. It is of paramount importance to identify and research potent novel compounds that can be used to increase the likelihood of remission. Plumbagin (PLB) is a plant-derived, neuroprotective agent, which exhibits significant anticancer activities during in vitro study. PLB has been shown to have a high therapeutic efficacy against chemoresistant sublines as well as their normal counterparts. We attempted to show that the chemoresistant ABCC1 could …

Evaluating The Influence Of Perfluorooctane Sulfonic Acid Exposure On Blood Glucose Levels: A Comprehensive Multiple Regression Analysis Considering Confounding Factors, Henry Mensah

Theses and Dissertations

Perfluorooctane sulfonate (PFOS) are widely used for industrial and commercial purposes and have received increasing attention due to their adverse effects on health. This thesis investigates the relationship between PFOS exposure and blood glucose levels, considering potential confounding factors. Regression analysis was conducted on a dataset comprising demographic, lifestyle, and biomarker data from a diverse population sample. Sex exhibited a significant role, with females demonstrating an 11.77% increase in blood glucose levels in response to PFOS exposure compared to males, supported by a p-value of 1.04 × 109. Body mass index (BMI) also played a pivotal role, revealing a 2.17% …

Beyond The Ivory Tower: The Underrepresentation Of African American Women In The Academe, Ashia Hall Muhammad

Theses and Dissertations

This dissertation addressed the underrepresentation of African American women attaining doctoral degrees at universities across the nation. It also explored the McNair Scholars Program, and the role the program played in preparing African American female students for graduate school and completion of the doctoral degree. In line with the phenomenology research design, semi structured interviews were conducted with five participants to gain a better understanding of their lived experiences. The interview protocol for this study was approved by the University of Arkansas at Little Rock Institutional Review Board. Thick descriptions of the participants' experiences were explored to gain insight on …

Understanding Policy On The Move: The Workings Of School Policy And Teachers’ Emergent Positioning Through Narrative, Ryan Kerr

Theses and Dissertations

This study examines the ways that school policies are understood and taken up by teachers. A review of the relevant literature suggests that much school policy, even that which is explicitly designed to ameliorate inequities that exist within schools and school systems, often have an inverse effect. It is also established that teachers, for many reasons, often subvert school policies in their daily practice. Using a transliteracies framework, this study seeks to explore the intimacies of these disconnects for teachers through a close look at their narratives surrounding school policy and the ways that certain policies affect their identities. This …

Federated Learning Based Autoencoder Ensemble System For Malware Detection On Internet Of Things Devices, Steven Edward Arroyo

Theses and Dissertations

New technologies are being introduced at a rate faster than ever before and smaller in size. Due to the size of these devices, security is often difficult to implement. The existing solution is a firewall-segmented “IoT Network” that only limits the effect of these infected devices on other parts of the network. We propose a lightweight unsupervised hybrid-cloud ensemble anomaly detection system for malware detection. We perform transfer learning using a generalized model trained on multiple IoT device sources to learn network traffic on new devices with minimal computational resources. We further extend our proposed system to utilize federated learning …

Integrated Computational Approaches: Elucidating Molecular Mechanisms Of Pathogenic Proteins And Designing Novel Inhibitors Against Mycobacterium Tuberculosis And Sars-Cov-2, Justin David Carbone

Theses and Dissertations

Chapter 1 introduces computational strategies in computer aided drug design (CADD), focusing on physics-based methodologies to enhance drug discovery. This chapter also discusses the theoretical foundations and practical applications of molecular dynamics (MD) simulations including free energy and stochastic kinetic analysis. In Chapter 2, CADD methods lead to development of inhibitors targeting the RNA Dependent RNA Polymerase (RdRP) of SARS-CoV-2. Inspired by the nucleotide inhibitor Molnupiravir, we aim to design a combinatorial library of 72 novel inhibitors capable of impeding a dual threat inhibition mechanism inducing lethal mutations along with stalling viral replication with specific selectivity to RdRp over Human …

Perceptions Of Primary Grade Teachers About Reading Curriculum And Early Literacy Intervention, Melody Carr

Theses and Dissertations

This thesis examines the perceptions of reading curriculum and early literacy intervention of primary grade teachers. The purpose of this study was to answer the following research questions: How do primary grade teachers view early literacy intervention? How do teachers perceive the basal reading program, Reading Wonders? While there are studies that focus on teacher perceptions, research is limited in the area of teachers’ perceptions of reading curriculum and early literacy intervention. Data was collected using a qualitative approach using a survey, interviews, and a focus group discussion. Findings reveal that teachers feel that they need to be prepared when …

Navigating The Nexus: Competition Law, Data Privacy, And Regulatory Challenges In The Digital Economy, Aalaa Tarek El Gohary

Theses and Dissertations

Competition law and data privacy meet at a crucial point in the growing digital economy, making it essential to delve into their intricate relationship. This thesis investigates how competition law and data protection law interact within the digital market. It examines how data protection regulations influence market dynamics and competition, and how competition law affects data processing and individual rights during the digital transformation. By thoroughly exploring key themes, such as historical context, current challenges, and regulatory responses, this research aims to shed light on the changing regulatory landscape and its impact on future frameworks in the digital era. The …

Voices From The Marginalized: The Experiences Black Employees Have On Search Committees And The Role Of Institutional Racism, Jacqueline Drummer

Theses and Dissertations

The history of Black people across the globe is marred by structural racism created by colonialism. Structural racism is deeply embedded in the American culture and academia is not excluded from this phenomenon. The research demonstrates that the problem of racism is not only prevalent in four-year academic institutions but also exists in two-year colleges. Our academic institutions are a microcosm of the broader society whereby we bring our worldviews, biases, and beliefs with us into the workplace. When these views are negative towards marginalized groups, actions can be adverse and impact the experiences of these demographics. My qualitative single …

Woosah! Minoritized Student Affairs Professionals: Navigating Racial Battle Fatigue At A Predominately White Institution, Julius J. Grayson

Theses and Dissertations

Using an interpretative phenomenological analysis this study explored the rich experiences of seven racially minoritized student affairs professionals (RMSAPs) who experienced racial battle fatigue (RBF) and the impact it had on their health at a predominantly white institution (PWI). Social psychological research has identified both blatant and subtle forms of racial discrimination have adverse which lead to deleterious mental health outcomes for racially minoritized individuals. The findings indicated that these racially minoritized student affairs professionals were experiencing racial microaggressions and racial battle fatigue at their predominately white institution. In order to reclaim their wellness, participants shared the strategies they used …

Exploring Culturally Responsive Instruction In Advanced Placement Science: Perspectives From Teachers Of Underrepresented Students, Nathan Frey

Theses and Dissertations

The study investigated teacher perceptions on the influence of culturally responsive instruction in advanced placement (AP) science courses, focusing on teachers of underrepresented student populations. The study explored how teachers viewed these educational strategies to support diverse student groups and bridge opportunity gaps prevalent in AP science education. Through narrative analysis, the research considered teachers' perceptions and implementations of culturally responsive practices and the engagement of underrepresented students in AP science. This exploration interpreted the potential of culturally responsive pedagogy to enhance student outcomes, participation, and interest in science, contributing to a more equitable and inclusive AP science experience while …

Does Suicide Prevention Knowledge Predict Suicide Prevention Behaviors Among Hope Squad Members?, Angie S. Bledsoe

Theses and Dissertations

This was one of the first studies that looked at the effect that suicide prevention knowledge acquired through suicide prevention training (QPR training and Hope Squad curriculum) may have on suicide prevention behaviors (gatekeeping behaviors) in an adolescent population (Hope Squad members). Additionally, this study looked at how Hope Squad members' intent to intervene may mediate the relationship between suicide prevention knowledge and suicide prevention behaviors. The current study found that on average Hope Squad members' suicide prevention knowledge, gatekeeping behaviors, and intent to intervene increased from prior to starting the Hope Squad program's curriculum to the end of the …