Evaluating Computational Predictions Of Magnetic Resonance Acoustic Radiation Force Imaging For Breast Cancer Focused Ultrasound Surgery, Chloe K. Nelson

Theses and Dissertations

Purpose: In magnetic resonance-guided focused ultrasound (MRgFUS) therapies performed in highly heterogeneous tissues such as the breast, the focal location must be located and characterized to guide successful treatments of tumors. Treatment time can be minimized by a priori prediction of the focal location through computational models. The purpose of this work is to evaluate numerical simulations of focused ultrasound (FUS) on their predictions of the focal location. Those simulations are compared to clinical magnetic resonance acoustic radiation force imaging (MR-ARFI) data collected during in vivo treatment of breast tumors. Methods: The focal location was evaluated prior to MRgFUS treatment …

Zeros Of Convex Combinations Of Elementary Families Of Harmonic Functions, Rebekah Ottinger

Theses and Dissertations

Brilleslyper et al. analyzed a one-parameter family of harmonic trinomials, and Brooks and Lee analyzed a one-parameter family of harmonic functions with poles. Each family was explored to find the relationship between the size of the parameter and the number of zeros of the harmonic function. In this thesis, we examine convex combinations of members of these families. We determine conditions under which the critical curves separating the sense-preserving and sense-reversing regions are circular. We show that the number of zeros of a convex combination can be greater than the maximum number of zeros of either part.

Unlocking Understanding: Enhancing Scientific Literacy Through Interdisciplinary Reading Strategies In High School Science Classes, Nancy C. Hollenweger

Theses and Dissertations

This study investigated the intersection of literacy instruction and high school science teaching in response to low proficiency levels in these areas and interest in pursuing STEM careers among U.S. high school students. Participants reported using close reading practices combined with inquiry-based science instruction to enhance students’ science literacy and reading proficiency. Data were from document analysis, one-on-one interviews, and focus group discussions. Five significant themes showed teachers' journeys from recognizing a problem to implementing new instructional strategies while pursuing knowledge about how to continue growing their craft. The five themes included teacher awareness of students’ literacy struggles, the apprehension …

Procedural Pre-Training For Visual Recognition, Connor S. Anderson

Theses and Dissertations

Deep learning models can perform many tasks very capably, provided they are trained correctly. Usually, this requires a large amount of data. Pre-training refers to a process of creating a strong initial model by first training it on a large-scale dataset. Such a model can then be adapted to many different tasks, while only requiring a comparatively small amount of task-specific training data. Pre-training is the standard approach in most computer vision scenarios, but it's not without drawbacks. Aside from the cost and effort involved in collecting large pre-training datasets, such data may also contain unwanted biases, violations of privacy, …

Ocean Rain Detection And Wind Retrieval Through Deep Learning Architectures On Advanced Scatterometer Data, Matthew Yoshinori Otani Mckinney

Theses and Dissertations

The Advanced Scatterometer (ASCAT) is a satellite-based remote sensing instrument designed for measuring wind speed and direction over the Earth's oceans. This thesis aims to expand and improve the capabilities of ASCAT by adding rain detection and advancing wind retrieval. Additionally, this expansion to ASCAT serves as evidence of Artificial Intelligence (AI) techniques learning both novel and traditional methods in remote sensing. I apply semantic segmentation to ASCAT measurements to detect rain over the oceans, enhancing capabilities to monitor global precipitation. I use two common neural network architectures and train them on measurements from the Tropical Rainfall Measuring Mission (TRMM) …

Hardware Acceleration Of Numerical Methods For Solving Ordinary Differential Equations, Soham Bhattacharya

Theses and Dissertations

Along with the advancement in technology, the role of hardware accelerators is increasing consistently, delivering advancements in scientific simulations and data analysis in scientific computing, signal processing tasks in communication systems, matrix operations, and neural network computations in artificial intelligence and machine learning models. On the other hand, several high-speed computer applications in this era of high-performance computing often depend on ordinary differential equations (ODEs); however, their nonlinear nature can present a challenge to obtaining analytic solutions. Consequently, numerical approaches prove effective in delivering only approximate solutions to these equations. This research discusses the implementation of a customized hardware accelerator …

Measurements In Kautilya’S Arthasastra, In The Domains Of Public Finance And Governance, Saraswathi Murali M

Theses and Dissertations

Ancient Sanskrit literature has rich discussion of measurements by different authorities. Examples from the Vedic Age and the period of Itihāsas can be found in Ṛgveda (c. 1500 BCE), Rāmāyaṇa, and Mahābhārata. A subsequent, and more elaborate, exercise of codification of measurements, relevant to finance and administration, is observed in Arthaśāstra, written by Kauṭilya, also known as Cāṇakya and Viṣṇugupta (c. 350-275 BCE).

The author, a scholar from Takṣaśilā, was the advisor during Cāndragupta Maurya’s reign (c. 321-297 BCE). After millennia of hibernation, Kauṭilya’s Arthaśāstra resurfaced, in the beginning of the twentieth century. Ever since, Arthaśāstra has been a subject …

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 …

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 …

Gender Inequality Is Not A "Women Only" Issue: A Case Study Of Egyptian Private News Media, Amira Ahmed

Theses and Dissertations

Discrimination in the workplace among different genders is a significant issue in the news media sector globally. This study aims to determine and measure gender inequality in the Egyptian private news media sector through different indicators, including job payments, workload, promotions, media roles, work safety, and work flexibility, especially post-COVID. A mixed approach was used by conducting sixteen interviews and then a survey of 304 private news media sector participants. As inequalities can be a double-faced case, men's and women's perspectives have been considered in the study sample. Through descriptive and statistical analysis, the research findings revealed new insights to …

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 …

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 …

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 …

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 …

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, …

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 …

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) …

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 …

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 …

Using Video Modeling To Improve Hygiene Practices For Students With Significant Cognitive Disabilities, Allison Hovey

Theses and Dissertations

The purpose of this study was to determine the effectiveness of instruction delivered by video to teach hygiene skills to students with significant cognitive disabilities. The independent variable in this study is personal hygiene instruction delivered by a video model. The dependent variable in this study is the ability of a participant to complete a multi-step hygiene task. The dependent variable will be measured during each data session of intervention by two scorers using the same measures and procedures across phases. Visual analysis demonstrated a functional relationship between the hygiene skill video model intervention and an increase in the percentage …

Assessment For Sustainable Transportation Systems In Egypt, Hagar Mohamed Fares

Theses and Dissertations

The assessment of a sustainable transportation system poses a significant challenge for local governments, as it dramatically influences the promotion of environmentally friendly modes of transportation with the objective of safeguarding the public's welfare and health in their daily activities. The integration of such assessment should be implemented from the initial stages of system planning to its operational and maintenance phases, particularly in light of the increasing number of urban development activities nationwide. In order to facilitate decision-making processes, it is imperative to establish an efficient rating system that incorporates cultural and social constraints and comprehensively considers the three dimensions …

Physical Effects On The Worst-Case Delay Analysis And Signal Integrity Of Buses And Spirals, Mahmoud Mahany

Theses and Dissertations

Physical effects have a significant impact on the IC design which will be investigated in this thesis. Moving toward advanced technology nodes, magnetic effects become more dominant than capacitive effects. As the dimensions of the devices go down and the interconnect manipulates the circuit behavior more and more. Cross talking and voltage drops are affecting the design heavily, however - going to the full electromagnetic point of view - current return path (CRP) adds significant parasitics to the performance of the chip. Neglecting the CRP gives wrong intuition and simulation of the designs, especially that the environment and surroundings can …

A Machine Learning Framework For Predicting Fabrication Hours For Industrial Steel Structure Projects, Dalia Ibrahim

Theses and Dissertations

Construction projects are considered high risk projects especially due to their required large capital making them require extreme attention in estimation as overestimating a project will lead to losing bids and underestimating them will lead to incurring more costs than budgeted resulting in losses. However, estimators are often faced with very tight timelines to finish their estimates leading them to primarily rely on their experience disregarding some crucial factors resulting in inaccurate estimates. In the steel structures industry, the steel fabrication phase accounts for 30 to 40% of the overall project cost; in addition, the steel industry is labor driven; …

Unraveling The Nexus: Social Spending, Development, And Breaking The Cycle Of Poverty, Yasmin Shehata

Theses and Dissertations

This study examines the role of development, as indicated by the Human Development Index (HDI), in shaping the connection between social public spending on health, education, and social protection and poverty in terms of the poverty headcount ratio at $3.65/day (2017 PPP). Empirical analysis is used to this end, employing a panel dataset of 68 countries at varied stages of development over the period 1995-2021. The empirical model is estimated using the Fixed Effects Two-stage Least Squares (2SLS). It is also re-estimated using the Instrumental Variable Generalized Method of Moments (IV-GMM) and Limited Information Maximum Likelihood (LIML) to test the …

The Effect Of Fiscal And Monetary Policy On Public Debt In Egypt, Malak Mohamed

Theses and Dissertations

The thesis aims to examine the effect of monetary policies and fiscal policies on public debt in Egypt during the period from 2006 until 2021. Egypt is witnessing aggravated levels of debt, with limited fiscal and monetary space. Therefore, the objective of the paper is to analyze the effect of discount rates, inflation rates, subsidies, taxes and economic growth on debt-to-GDP in Egypt using a VAR model with an extended test of Impulse Response Function. The results suggest that a positive shock in government expenditures initially decreases public debt but leads to a fluctuating increase in the debt-to-GDP ratio in …

Language And Power: A Critical Discourse Analysis Of Egypt’S Housing Narratives, Maram Gamal

Theses and Dissertations

The issue of housing in Egypt is an evolving historical phenomenon intricately tied to the Egyptian identity, and deeply embedded in the social and political fabric. Common language shapes actual realities and it forms an integral part of the cultural parameters. This research is a critical discourse analysis (CDA) of the housing narrative across four consecutive ruling regimes with distinct political orientations. It deploys a two-stage CDA approach. The first stage involves ideological codification of the narrative to chronologically organize them into their ideological orientations and categories. The second stage historicizes data via a dual approach, namely integrating Norman Fairclough's …

Unlocking Prosperity: The Role Of Icts In Alleviating Poverty In Middle East And Africa, Yousra Elnemr

Theses and Dissertations

Most countries in the Middle East and Africa region (MEA) have recently witnessed digital improvements despite the increase in poverty rates. This thesis investigates the potential relationship of Information and Communication Technologies and poverty reduction using annual unbalanced panel data for 21 MENA countries and 48 Sub Saharan African (SSA) countries from 1990 to 2022. By focusing on two primary ICT indicators representing ICT usage and access—internet penetration and mobile subscriptions— our research applies Fixed-Effects Two Stage Least Square (2SLS) economic model to explore their relationship with the poverty headcount ratio at the $2.15 per day international poverty line. The …

Financial Inclusion And Human Development: A Comparative Analysis Of Mena And Brics, Mohammad Eid

Theses and Dissertations

Various efforts to enhance human development in several countries has been underway for years now, but the level of human development attained by countries in BRICS and MENA regions vary. This study empirically examines the role of financial inclusion and its impacts on human development; it investigates whether financial inclusion can be used to drive human development by examining and comparing its results in MENA and BRICS countries. The dependent variable is the score of Human Development index HDI. This study provides a unique comparative analysis of the role of financial inclusion and its effects on human development in MENA …