Digital Commons Network^™

Quantum Markov Chains Related To Certain Lattice Models, Ali Ghaleb Alaali

Theses

A central open problem in quantum probability is the establishment of a general theory of Markov fields. This thesis contributes to the general theory by introducing quantum probability and applies it via the construction of quantum Markov chains on different hierarchical lattices (Cayley trees). This thesis examines two types of trees one of which corresponds to the Ising-XY-Model on a Cayley tree of order two which then the existence of Markov chains can be utilized to detect phase transitions. The other discussed model is a (1,3) tree in which the XY-model is considered to determine the existence of a quantum …

Ai-Powered Pedagogy: Revolutionizing Students’ Learning Experiences Through Integration Of Ai Technologies, Amna Awad Alsaedi

Theses

This research examines the integration of Artificial Intelligence (AI) within the educational sector with the aim of enhancing student learning outcomes. AI offers tailored learning experiences, interactive educational content, prompt feedback, and access to diverse learning resources. Nonetheless, challenges including addiction, costliness, privacy infringement, bias, ethical dilemmas, market competition, and moral considerations require resolution. Research particularly delves into the utilization of chatbots, and algorithms designed to simulate human interactions and generate text resembling human speech. Educational applications powered by AI have the potential to heighten student engagement, comprehension, and academic performance by substituting traditional assignments with concise, information-rich lessons. Furthermore, …

Corrosion Behavior Of 304 Stainless Steel In H2so4/Nacl In The Absence And Presence Of Molybdate And Tungstate, Asma Yousef Alkaabi

Theses

In this study, the corrosion behavior of 304 austenitic stainless steel was investigated in H₂SO₄ solutions, H₂SO₄ as a function of Cl^- ions concentration, H₂SO₄ as a function of MoO4^2- ions concentration, and H₂SO₄ + Cl^- ions as a function of MoO₄^2- ions concentration. Moreover, the synergistic inhibition of MoO4^2- and WO₄^2- ions was investigated in 0.1 M H₂SO₄, with the solution pH adjusted to 3.0. The findings show that the corrosion current density (i …

Assessing The Spatiotemporal Variability Of Aerosol Optical Depth And Particle Sizes In The Uae Atmosphere Using Remotely Sensed Data, Bashayer Ali Alzahmi

Theses

This thesis investigates atmospheric aerosol concentrations, with a particular focus on the United Arab Emirates (UAE). The study maps the spatial and temporal variations in Aerosol Optical Depth (AOD) and characterizes aerosols using high-resolution Moderate Resolution Imaging Spectroradiometer (MODIS) products. The primary objective of this research is to enhance the understanding of aerosol dynamics in the UAE by distinguishing between natural and anthropogenic aerosols through the Angström Exponent (AE) and assessing their impacts on local climate, air quality, and public health. The study employs Remote Sensing (RS) techniques to conduct detailed environmental assessments, analyzing AOD variability across daily, monthly, seasonal, …

Utility Of New Remote Sensing Data In Evaluating The Hydrological Response To Land Use And Land Cover Changes, Chithrika Jayamini Alawathugoda

Theses

Land use and land-cover (LULC) changes have profound impacts on hydrological responses, influencing runoff dynamics and flood risks. This study focused on two contrasting watersheds undergoing rapid LULC transformations: the arid Wadi Ham watershed in the UAE and the tropical Imphal watershed in India. The research emphasized the critical role of accurate LULC data for hydrological modeling in climate-sensitive regions, where land-use changes are accelerating. Using high-resolution PlanetScope and Sentinel-2 satellite imagery, LULC maps were developed and classified using Maximum Likelihood (ML) and Random Forest (RF) algorithms. PlanetScope imagery paired with the RF classifier achieved the highest overall accuracy, with …

Solvent- And Temperature-Controlled Regioselective Catalytic Synthesis Of Potentially Bioactive, Sara Helmy Saada

Theses

Isothiocyanates play a crucial role as essential components in the development of effective synthetic methods for producing key chemical intermediates and biologically active molecules. Similarly, N-arylcyanothioformamide compounds have been employed to create structural cores for numerous heterocycles in a one-step reaction. In this study, we describe the first consistent regiospecific reaction of isothiocyanates with a variety of substituted N-arylcyanothioformamides in a 1:1 molar ratio to generate a series of imidazolidineiminodithiones decorated with a multitude of functional groups on both aromatic rings. The reaction is carried out at room temperature using a 20 mol% catalytic amount of triethylamine with …

Automating Modular Construction Manufacturing For Affordable Housing, Enaam Mohammed Ouda

Theses

In recent years, there has been an increase in the frequency and intensity of natural disasters worldwide, resulting in loss of life, displacement, and extensive property damage. According to the UNHCR's report, 122.6 million individuals were displaced by mid-2024, highlighting that the speed and volume of displacement exceeds the availability of solutions for those affected. To address the urgent need for affordable housing solutions, modular construction is preferred over traditional construction methods as it tackles limitations such as long project durations, high costs, and safety and environmental concerns. Integrating advanced technologies in modular construction can further enhance its benefits and …

The Effect Of Nerolidol On The Renal Dysfunction Following Bilateral Ureteral Obstruction In The Rat, Harun Rashed Toumi

Theses

This thesis addressed nerolidol’s potential therapeutic and protective effects on bilateral ureteral obstruction-induced uropathy in rats. Obstructive uropathy stands as a notable contributor to acute kidney injury (AKI), accounting for 5-10% of all AKI cases worldwide, with a particularly high prevalence among the elderly, constituting 22% of AKI cases in this age group. Urinary tract obstruction, often attributed to factors such as kidney stones, urinary tract deformities and benign/malignant growths such as benign prostatic hyperplasia (BPH) in older men can lead to detrimental outcomes if left untreated, potentially progressing to kidney failure and even mortality. The severity of the kidney …

Effect Of Virtual Reality Technology On Computer Science/Engineering Based Laboratories Education – A Case Study, Mariam A. Al Nuaimi

Theses

Virtual reality (VR) is becoming increasingly popular and essential in education as institutions strive to incorporate technology in education. In Engineering and Computer Science, students face difficulties in comprehending many abstract complex concepts that are typically studied in Labs. This situation worsens with hardware failure and the lack of pedagogical tools. The main goal of this paper is to investigate the impact of VR environments on learning advanced and complex STEM concepts. We also explore the impact of different human-computer interaction (HCI) techniques including gamification on the learning experience of STEM students. To measure such impact, we developed a VR …

On Fractional Dunkl-Type Laplacian, Saba Ibrahim Aldan

Theses

This thesis presents a comprehensive study of the fractional Dunkl-type Laplacian operator (−∥x∥ Δ��)^σ for 0<σ<1, through four equivalent key characterizations: the heat semigroup characterization, the pointwise characterization, the spherical mean characterization, and through an extension theorem. These characterizations offer different perspectives on the operator ∥x∥Δ_��, generalizing known results for the Euclidean Laplace operator by incorporating reflection symmetries, making it highly relevant in the harmonic analysis of root systems.

By exploring these characterizations, the thesis highlights the deep connections between the fractional operator (−∥x∥Δ_��)^σ and harmonic analysis, as well as its broader applicability in mathematical physics and partial differential equations.

Practices And Perceptions Of Uae Residents: Food Safety In Handling And Preparation Of Fish, Consumption, And Nutrition From Fish, Noof Ahmad Al Marzooqi

Theses

Background: UAE is uniquely located with an extensive seafront, which has led to the development of fishing and fisheries in the country. As a result, the UAE's diverse population has become one of the highest fish consumers among the Gulf countries. The high fish consumption in the UAE was a part of the traditional diet; however, a better understanding of UAE residents' practices and perceptions of fish food safety, fish preparation, and nutrition from fish consumption was needed. Objective: This study investigates food safety practices in handling and preparation of fish, consumption trends, and perceptions of nutrition from fish among …

Food Neophobia, Food Pickiness, And Physical Growth Status In A Sample Of Emirati Children With Neurodevelopmental Disorders And Neurotypical Development In The United Arab Emirates, Hessa Salem Al Derei

Theses

Eating habits and expression of independence in food selection typically starts at about 18 months of age, reaching its peak between 2 and 6 years. However, child feeding problems are common in boys and girls, both- in children with neuro-typical development (NTD) and those with neuro-development disorders (NDDs). Food Neophobia (FN) and Food Pickiness (FP) are considered as the main forms of food rejection in children, affecting their diet variety, and consumption of foods. If unresolved, these may result in nutrient deficiencies and compromised growth and development in children. There is a dearth of evidence on this important topic in …

Governance Of Religious Affairs In The United Arab Emirates, Ayesha Helal Al Qubaisi

Theses

This study seeks to investigate policies, measures and efforts on religious affairs governance in the UAE, through enacting laws and establishing local religious institutions by uncovering the necessity of the procedures that are in place, the goals of religious governance, how religious affairs are regulated, and the challenges that the government faces in the process. The main objective of this thesis is to provide one possible adoption model for religious regulation. Further, since there are few studies on the topic of religious governance in general, and in the UAE particularly, the researchers synthesized and integrated existing knowledge from diverse sources …

Adapting Emergency Response: A Nationwide Study Of Disability Accommodation Practices Among Local Emergency Managers, Iskender Mambetkadyrov

Theses

Local emergency management agencies (EMAs), who are critical in disaster response and management in the US, frequently underserve their constituencies who identify as people with disabilities (PWD) and, more specifically, as deaf and hard of hearing (DHH). These shortfalls have still persisted even after policies such as the Americans with Disabilities Act have passed in an attempt to bridge these gaps. This thesis aims to explore the organizational actions & strategies local EMAs have taken towards disability inclusion, the barriers they run into, and explore whether increases in general disability-inclusive actions lead to increased DHH-specific inclusive actions to steer local …

A Comparative Study Of Weavings Of Two Disparate Cultures: Finding The Similarities In Handcrafts, Monica Lowe

Theses

This thesis is a study of the similarities between the traditional weavings of two indigenous cultures who appear to be culturally unrelated, the West African Ewe and the Peruvian Quechua located in the Cusco Province. Its purview includes the purpose it serves, who does the craft, and meanings woven into the textiles. The focus of this thesis is based on a theory that across human cultures, iconographies and archetypes are demonstratively the same, with similar collective, unconscious meanings. The overall theory is that handcrafts are an important consideration when demonstrating a reflection of human cultural similarities in beliefs, community, and …

Patient Specific Tissue Emulating Phantoms For Image-Guided Intervention Applications, Kelly Merrell

Theses

Patient specific organ and tissue mimicking phantoms are used routinely to develop and assess new image-guided intervention tools and techniques in laboratory settings, enabling scientists to maintain acceptable anatomical relevance, while avoiding animal studies when the developed technology is still in its infancy. Gelatin phantoms, specifically, offer a cost-effective and readily available alternative to the traditional manufacturing of anatomical phantoms, and also provide the necessary versatility to mimic various stiffness properties specific to various organs or tissues. In the first part of this thesis, we describe the protocol to develop patient specific anthropomorphic gelatin phantoms of different organs and we …

Design And Implementation Of Attitude Control System For Gnssas 6u Cubesat, Anoud Nasser Alkatheeri

Theses

This thesis presents the design and simulation of the Attitude Control System (ACS) for the GNSSaS 6U CubeSat, developed by the National Space Science and Technology Center (NSSTC) at UAE University. The CubeSat's mission is to enhance GNSS signal accuracy, which requires precise attitude control to achieve this objective. The ACS utilizes magnetorquers and reaction wheels for actuation. The primary objective of this thesis is to design an ACS that fulfills the mission’s performance requirements, including maintaining pointing accuracy in both fine and medium pointing modes. To achieve this, a comprehensive disturbance analysis was conducted, leading to the selection of …

Assessment Of Heavy Metal Concentration In Orange-Spotted Trevally (Flavocaranx Bajad) From Two Coastal Locations In Abu Dhabi, United Arab Emirates, Kholood Khaled Aljaberi

Theses

This study investigates concentration of heavy metals in the Orange-spotted Trevally (Flavocaranx bajad) from two distinct coastal areas in Abu Dhabi Emirate, Sila and Abu Dhabi. Heavy metals pollution poses a significant risk to both marine ecosystems and human health; thus it is vital to conduct comprehensive assessments of heavy metal contaminations in aquatic life. The main aim of this study is to quantify the levels of heavy metals and assess their concentrations in gill, muscle, and liver tissues of the Orange-spotted Trevally from both sites. The samples were prepared and analyzed using microwave digestion system and ICP …

الحمایة المدنیة للعلامات التجاریة في الإعلان المقارن عبر الانترنت, أماني سعید الظاھري

Theses

Civil Protection of Trademarks in Comparative Advertising via The Internet

This study aims to explore the civil protection of trademarks in the context of comparative online advertising by third parties. It employs an analytical approach to examine the current legal frameworks and their impact on trademarks in the digital environment.
One of the key findings of the study is that the legal provisions regarding advertising in Cabinet Decision No. (66) of 2023, concerning the executive regulations of Federal Law No. (15) of 2020 on Consumer Protection, implicitly recognize the need for transparency and objectivity. They prohibit the dissemination of false …

Effect Of Virtual Reality Technology On Computer Science/Engineering Based Laboratories Education – A Case Study, Saeed Salem Al Shebli

Theses

The rapid growth in mobile applications raises critical concerns about the security of apps and users' privacy, especially in permission control. Mobile apps access sensitive information of users, and the current cybersecurity landscape faces a huge challenge in ensuring the least required permissions are granted. This research focuses on designing an advanced permission recommendation system that couples the strengths of Natural Language Processing (NLP) and Machine Learning (ML) in solving most of the existing gaps in permission management, thus guiding which permissions are mostly needed by Android applications.

The research thus follows a multi-classification approach, integrating state-of-the-art ML techniques with …

جريمة هتك العرض في القانون الإماراتي, سالم علي الكعبي

Theses

The Crime of Indecent Assault in UAE Law

The crime of indecent assault is considered one of the serious offenses condemned by UAE law due to its violation of human dignity and ethical and social values. This research focuses on the evolution of legal texts related to this crime, particularly the changes introduced in Federal Decree-Law No. 31 of 2021 concerning crimes and punishments, compared to the UAE Penal Code of 1987. The research also addresses the amendments made to the rules governing this crime, such as raising the age of the victim from 14 to 18 years and abolishing …

تأثير الرضا الوظيفي على استمرار الموظفين الإماراتيين في العمل في القطاع الخاص, وضحه سعيد القايدي

Theses

The Impact of Job Satisfaction on the Continuation of Emirati Employees to Work in the Private Sector

Despite the significant attention given by the government of the United Arab Emirates to the localization n of national talent in the private sector through its support for various government programs and initiatives aimed at enhancing the participation of Emiratis in the labor market across different economic sectors, and the notable success of these programs and initiatives, which have contributed to an increase in the number of Emiratis joining the private sector to nearly 100,000, the most prominent challenge that may affect the …

Polyphenol Profiling And Bioactivities Of Date Seed: A Comparative Assessment Of Extraction Techniques In Different Date Seed Varieties, Fatima Ibrahim Albedwawi

Theses

Plant-waste-derived bioactive compounds have generated growing interest recently. In this context, this project examined the phenolic content, antioxidant capacity, antimicrobial activity, and antibiofilm capability of the seed extract of Phoenix dactylifera. Six date seed varieties (Fardh, Sukarri, Negal, Majdool, Zahidi, and Khadrawy) were studied. In this study, a novel ultrasound-assisted extraction technique is compared with the conventional extraction method (maceration using 80% ethanol), taking into account both the quality and quantity of polyphenols. Among the primary objectives, the ultrasound-assisted extraction (UAE) of polyphenols was optimized using response surface methodology (RSM), aiming for maximum TPC and DPPH radical scavenging. By …

A Novel Approach To Predicting Particle Deposition In A Human Lung Using A Lumped, Oscillatory Respiratory Model, Jordana E. O'Brien

Theses

Inhalation has become widely accepted as the optimal drug delivery mechanism for respiratory diseases, which often requires targeting a particular region of the lung. Mathematical models are key to under- standing the factors that influence drug transport and deposition in the lung. This study proposes a simple zero-dimensional typical path model that couples oscillatory breathing mechanics and particle deposition over multiple breathing cycles. Lung regions are lumped into compartments, and respiration is modeled using a circuit analog framework to capture airflows, lung pressures, and volumes in each lumped region. Particle transport and deposition are modeled by a mass-balance equation in …

Fluidity Of Time, Phoebe Huey

Theses

Fluidity of Time is a digital clock installation that uses particle simulations to symbolize the fluctuating nature of human emotions throughout the day. Inspired by the concept of entropy—the natural shift from order to disorder—the clock’s particle-based digits flow, collapse, and rebuild, mirroring emotional cycles. The project addresses the issue of disconnection in a post-pandemic, technology-driven world, aiming to captivate viewers and create shared experiences that foster community. Through experimentation in X-Particles, I developed fluid, life-like motion in a digital clock that engages viewers on both aesthetic and emotional levels. The installation received positive feedback for its mesmerizing and satisfying …

Dubai Urban Planning 2040: Resource Requirements In The Urban District 5, Bakhit Alfalasi

Theses

The availability of water, food, energy and air quality resources is compromised by prevailing global issues like environmental stress, climate change, and population growth. This research study details the different requirements for Dubai urban District 5 based on the tenets laid out in the Urban Planning 2040 initiative. The literature review section looks into existing literature on the present state of affairs in the UAE as regards availability of water, food, and energy resources in the country and implications of their production processes on air quality. The Study will employ an exploratory research design, where a systematic review of literature …

Genomic Analysis Of Virulence Loci That Enable Growth Of Plasmopara Viticola On Resistant Vitis Spp., Sarah Teeter

Theses

Plasmopara viticola is considered one of the most damaging grapevine pathogens, costing growers millions of dollars in losses. Despite the discovery of resistance to P. viticola (RPV) loci in grapevines to combat this pathogen, recent research shows that P. viticola can rapidly adapt virulence on some RPV loci, reducing their effectiveness. This thesis explored two strategies to understand how P. viticola adapted to two resistance loci of moderate strength, RPV3.1 and RPV10.3, by identification and characterization of P. viticola genomic regions showing a high selective sweep. Using sequenced natural infections from field samples, multiple tools and custom R scripts were …

Monitoring The Seasonal Presence Of The Blue Shiner, Cyprinella Caerulea, In Little River Canyon National Preserve Using Environmental Dna, Deanna Meadows

Theses

The study of environmental DNA (eDNA) has provided researchers with a more accessible and sensitive way to identify the presence of specific species compared to traditional monitoring methods. eDNA enables species detection by analyzing environmental samples such as water or soil, which contain genetic material shed by organisms in a given area. Research indicates that eDNA techniques have become a valuable method for monitoring threatened and invasive species, proving particularly reliable for detecting aquatic species compared to traditional techniques. Quantitative PCR (qPCR) has been used in numerous eDNA studies, as it provides for greater accuracy than conventional PCR. Cyprinella …

Oxidative Stress Responses In Arabidopsis Thaliana Plants To Uv-B Irradiation, Bolaji Olalere

Theses

The depletion of the stratospheric ozone layer has led to increased levels of harmful UV-B radiation reaching the Earth's surface, posing significant challenges for plant health and development. This study investigates the oxidative stress responses in Arabidopsis thaliana when exposed to UV-B irradiation. Arabidopsis thaliana, a well-established model organism, is particularly sensitive to UV-B, making it ideal for understanding the effects of UV-B-induced oxidative stress. UV-B radiation, a mutagenic component of sunlight, disrupts key metabolic, molecular, and developmental processes, leading to DNA damage, impaired metabolism, and morphological changes. This research aims to explore how UV-B exposure affects the activities of …

Predictive Rescue System Through Real-Time Accident Monitoring Leveraging Artificial Intelligence, Humaid Ahmad Al Falasi

Theses

The research develops a robust AI-powered predictive system utilizing convolution neural networks (CNNs), IoT-enabled devices, and advanced machine learning (ML) models to improve real-time monitoring, resource allocation, and decision-making. The proposed system aims to minimize emergency response times, optimize resource allocation, and enhance public safety. Using machine learning models such as convolution neural networks (CNNs) and random forests, the system integrates IoT devices, traffic cameras, and deep learning algorithms to enable proactive incident management and efficient decision-making. A methodological framework based on CRISP-DM guides the project, encompassing historical data analysis, system modeling, and evaluation against real-world data from UAE traffic …