Digital Commons Network^™

Calibrating Knowledge Graphs, Aishwarya Rao

Theses

A knowledge graph model represents a given knowledge graph as a number of vectors. These models are evaluated for several tasks, and one of them is link prediction, which consists of predicting whether new edges are plausible when the model is provided with a partial edge. Calibration is a postprocessing technique that aims to align the predictions of a model with respect to a ground truth. The idea is to make a model more reliable by reducing its confidence for incorrect predictions (overconfidence), and increasing the confidence for correct predictions that are closer to the negative threshold (underconfidence). Calibration for …

A Spectral Component Analysis Of Repeating Frb121102, Zachary Diermyer

Theses

Fast Radio Bursts (FRBs) are extremely luminous, millisecond duration radio pulses of unknown origin. While many FRBs are transient events, a few sources are confirmed to be the progenitor of multiple bursts. These "repeaters" offer an extraordinary chance to study the properties of mysterious FRB signals. The FRB121102 source was the first repeater to have ever been discovered and it has since provided us with a wealth of data to be analyzed. A unique feature of repeaters, including FRB121102, is the presence of a multicomponent burst structure. This is a phenomenon where individual portions of the burst are separated in …

Greenhouse Gas Sensor Using A Novel Conducting Polymer-Gqd Composite Material, Reeba Thomas

Theses

As Greenland’s ice is melting by a record amount with the concurrent increase in greenhouse gases in the atmosphere, there is a concern for examining global warming in more detail. To control and keep the levels monitored, the precise measurement of greenhouse gases is desirable as there are interferences in the measurements. A novel method is developed to make sensors from conducting polymers. An Emeraldine Green (EG) – Graphene Quantum Dots (GQD) composite material is synthesized and used as the active material with enhanced sensing properties, owing to the larger surface area available. The active material is characterized to ensure …

Development Of Highly Functional, Surface Tunable, And Efficient Composite Coatings For Pool Boiling Heat Transfer Enhancement, Aniket Mohan Rishi

Theses

Rapid growth and advancements in high-power electronic devices, IC chips, electric vehicles, and lithium-ion batteries have compelled the development of efficient and novel thermal management solutions. Currently used air and liquid cooling systems are unable to remove the heat efficiently due to significant pressure drops, temperature differences, and limited heat-carrying capacities. In contrast, phase-change cooling techniques can remove the larger amount of heat with higher efficiency while maintaining safer operational temperature ranges. Pool boiling heat transfer is a type of phase-change cooling technique in which vapor bubbles generated on the boiling surface carry away the heat. This pool boiling performance …

The Scene- Interactive Video Scene Controller, Haena Lee

Theses

In modern society, people spend much time watching videos to meet their emotional and social needs. Movies and TV shows increasingly contain violence and sexuality to catch the eye. In addition to this trend, the current age-based rating becomes more and more lenient than the one in the past. As a result, the content rating system does not provide a clear standard about the level of graphic intensity anymore. This situation prevents a particular group of viewers from fully enjoying the video contents: parents and highly sensitive people. Whenever these two groups watch movies or live TV, they need to …

Standard Accented Turkish Speakers’ Perception Of Kurdish Accented Speakers: The Factors Behind The Evaluations, Busra Can

Theses

This study investigates the attitudes of standard accented Turkish speakers towards non-standard Kurdish accented speakers of Turkish. Given the fact that there are strict language policies in Turkey, this paper analyzes the effect of such standard language ideologies on listener attitudes using a mixed-methods design. The study included 50 Turkish participants with ages ranging from 19 to 51. Participants completed a survey with 21 questions and could volunteer to also participate in an interview. The survey asked about biographical data, evaluations of various speakers and ratings of accents of Turkish. Using a matched guise technique in the survey, a Kurdish …

Is Violent Crime A Function Of Drug Enforcement?, Emmanuel Ibifafa Ubani

Theses

This paper examines the relationship between the incidences of violent crime and the level of drug enforcement. To do this, the paper compiles a panel dataset from 30 large cities across the US and using fixed effect regression analyzes the dataset. The paper finds that increase in drug enforcement does not lead to significant or noticeable decrease in violent crime offenses. Specifically, the paper finds that the relationship between drug enforcement and violent crime offenses has a positive and significant contemporaneous relation although it is no longer significant with lagged enforcement.

Characterization Of Proteostasis Mechanisms In Chlamydia Trachomatis, Amanda M. Blocker

Theses

Chlamydia trachomatis is a gram negative, obligate intracellular pathogen with a highly reduced genome of ~1 Mbp. It is the leading cause of the reportable sexually transmitted infection known as chlamydia in the United States and is the leading cause of preventable blindness (trachoma) worldwide. While treatment of infections is possible, weaknesses of current approaches include treatment failure, antibiotic-induced dysbiosis, and resistance development of bystander bacteria during chlamydial treatment. These weaknesses support the need for improved therapeutic approaches. C. trachomatis undergoes a biphasic developmental cycle with two forms, the infectious elementary body (EB) and replicative reticulate body (RB), that have …

Heat Transfer Intensification In Microchannel Heat Sinks (Mchs) - Wavy Channels Embedded With Pin Fins, Anas Mohammad Amin Alkhazaleh

Theses

This work conceptualizes heat sinks for electronics employing wavy/sinusoidal microchannels embedded with pin fins and subsequently analyzes their performance in terms of thermal resistance, pressure drop, maximum chip temperature, and the associated pumping power due to the pressure drop. The conceptualized wavy Microchannel Heat Sink (MCHS) is mathematically modeled using a combination of governing equations including energy equations, continuity equations, and Navier- Stokes equations. The performance of the wavy microchannel heat sink embedded with pin fins is evaluated based on a parametric study covering multiple parameters; microchannel’s amplitude, frequency, hydraulic diameter, pin fins’ diameter, and location, and Reynolds number. The …

Study Of Electrodeposition Of Copper-Indium Material For Fabrication Of Cis Thin-Film Solar Cells, Leher Farooq

Theses

Abstract

Copper-Indium material for the fabrication of CIS/CIGS thin-film solar cells and for applications as an alloy is one of the most auspicious materials currently being studied and has attracted significant interest in solar energy and other industries. In the past, there have been several methods used for the fabrication of chalcopyrite thin-film solar cells. However, one of the best methods in the industry is electrodeposition, which employs the principles of electrochemistry to deposit materials on a working electrode. The cyclic voltammetry and constant potential deposition studies have been conducted for the electrodeposited copper indium material. In order to better …

Can Home Garden Be A Safe Haven In Times Of Crisis? To Measure Householders Attitudes, Preferences And Willingness To Have Home Garden At Time Of Pandemics, Noura Mubarak Al Mansouri

Theses

The new coronavirus that has rapidly become a worldwide outbreak leads people to Self-quarantine, where work, school, and shopping have become through remote applications. Keeping fit and being healthy is important at any time, especially during the coronavirus pandemic. Having a garden or outdoor space provides the opportunity to have a place that can be used to maintain a healthy life and well-being of an individual. The coronavirus lockdown has provided the time ad opportunity to create a garden that has been always wanted by householders. A Garden is a plot of ground where herbs, fruits, flowers, vegetables, and etc. …

A Reinforcement Learning Approach To Vehicle Path Optimization In Urban Environments, Shamsa Abdulla Al Hassani

Theses

Road traffic management in metropolitan cities and urban areas, in general, is an important component of Intelligent Transportation Systems (ITS). With the increasing number of world population and vehicles, a dramatic increase in road traffic is expected to put pressure on the transportation infrastructure. Therefore, there is a pressing need to devise new ways to optimize the traffic flow in order to accommodate the growing needs of transportation systems. This work proposes to use an Artificial Intelligent (AI) method based on reinforcement learning techniques for computing near-optimal vehicle itineraries applied to Vehicular Ad-hoc Networks (VANETs). These itineraries are optimized based …

الحماية القانونية للمصنفات الناشئة عن برامج الذكاء الاصطناعي, عائشة يحيى شقفة

Theses

ان المستقبل الذي تطمح له دولة الامارات العربية المتحدة أكثر تطور وفاعلية وذلك بمواكبتها للتطور السريع في عالم التكنلوجيا، فقد تم انشاء وزارة الذكاء الاصطناعي التي تضمنت استراتيجية الامارات للذكاء الاصطناعي لتنسجم بمئوية الامارات 2071 في سعيها ان تكون دولة الامارات الأفضل بالعالم في المجالات كافة. اذ تتناول هذه الدراسة الذكاء الاصطناعي من الجانب الإبداعي وذلك وفق تطوير قدرات وقوة تعلم الالة وتوظيفها لإنتاج ابتكار. فان قانون حق المؤلف

يحمي الابداع بشتى أنواعه إلا أن الابداعات الناشئة عن برامج الذكاء الاصطناعي ابداعات مستحدثه لم يتضمنها نص تشريعي كما لم يتم توضيح الحماية المقرر لها.

أهم النتائج التي توصلت لها هذه …

Can Date Palms Planted For Urban Landscaping Purposes Serve In The Production Of Edible Fruits? An Evaluation Of Tissue Element Concentrations, Fruits Quality And Health Risks, Khattab Omar Adam Al Nidawi

Theses

More than 80.000 date palms are grown for ornamental purposes as part of public urban greenery in the city of Al Ain. The fruits that these palms produce, are often not valorized as food for humans, due to the fear that they might contain potentially hazardous pollutants, such as heavy metals. When palms are grown near roads or in urban environments, pollution might arise from the exhaust and dust produced by vehicles, industrial activities, as well as through urban waste material deposition, including irrigation with treated sewage effluent. On the other hand, many date palms grown for landscaping purposes might …

Forensic Evaluation Of Qiagen Investigator Argus Y-28 With Case Work Samples, Afnan Mohammed Alshamsi

Theses

Short Tandem Repeats polymorphisms on the Y-chromosome (Y-STRs) play a significant role in history of human hereditary. The recently introduced 6-dyes Qiagen investigator Argus Y-28 Kit which include 28Y-STR loci (DYS389I, DYS391, DYS389II, DYS533, DYS390, DYS627, DYS458, DYS393, DYS19, DYS437, DYS449, DYS460, DYS576, YGATAH4, DYS481, DYS448, DYS518, DYS439, DYS549, DYS438, DYS456, DYS643, QS1, DYS570, DYS635, DYS385, DYS392, QS2) has been used for internal validation study used in the forensic laboratories which followed sensitivity study, mixture studies, PCR parameter limits, stability study, and performance on mock casework samples. The results were reported by statistical analysis using ANOVA program. The results validate …

Anticolon Cancer Activity Of Aristolochia Rotunda Root Extract, Ghufran Ayman Al Salloum

Theses

Colon cancer is the third leading cause of cancer death worldwide and the first cause of cancer death in the UAE. While the conventional cancer therapy options like chemotherapy, radiation, and surgery are effective in the treatment of most cancers, they exhibit precarious side effects that can endanger the life of the patient. The present study explores the potential anticancer effect of Aristolochia rotunda root extract against human colorectal cancer cells. The root extract exhibited strong anti-proliferative activity in a concentration- and time-dependent manner against human colorectal cancer cell lines. A. rotunda root extract also inhibited colony growth and induced …

Population Structure And Relative Abundance Of Elasmobranch Species Utilizing Inshore Waters Of Abu Dhabi, Shamsa Mohamed Al Hameli

Theses

The diversity, abundance, and distribution of elasmobranchs is poorly documented along the Arabian Gulf coast of the United Arab Emirates, with only a handful of publications focusing on elasmobranchs with the majority of data are collected through landing site and market surveys lacking site and species-specific data that are crucial for conservation management plans. The main objectives of this research were to determine the occurrence and utilization; quantify the relative abundance across different seasons; and describe the demographic structure of elasmobranch species that occurs in shallow waters around mangroves in Khor Al Saadiyat and adjacent islands, northeast of Abu Dhabi, …

In-Vitro Analysis Of Potential Autophagy Mediated Safranal-Sorafenib Combined Effect On Hepatocellular Carcinoma, Aaminah Farrukh

Theses

Hepatocellular carcinoma (HCC) is one of the most commonly occurring cancers worldwide. The risk factors include obesity, hepatitis, alcoholism, smoking etc. One of the biggest associated challenges is the current treatment strategies. The therapeutic options are limited with economical and accessibility challenges, especially with increased HCC incidence. Sorafenib, a multikinase inhibitor, is one of the first FDA approved drugs for HCC. But drug resistance and cancer relapse are a common drawback for this treatment. The need for better treatment is crucial now more than ever. The use of saffron as a potential natural therapeutic option is not a novel strategy. …

The Role Of School Principals In Fostering The Teamwork Success In Al Ain Schools From Teachers’ Percpective, Afra Mohammed Al Shamsi

Theses

The aim of the present study is to investigate the role of principals in fostering teamwork success. This study explained the leadership practices in fostering teamwork as perceived by teachers. Notably, the teamwork and its importance are neglected most of the time. Additionally, very little work was found in context of UAE. A sample of 334 public school teachers from Al Ain completed the online survey about their satisfaction about teamwork rates, their views regarding principals fostering teamwork, as well as recommendations and suggestions that could promote teamwork among school teachers. Descriptive statistics is adopted to analyze the quantitative items …

Molecular Mechanisims Underlying The Anti-Cancer Activity Of Gum Arabic From Acacia Sp. In Triple-Negative Breast Cancer Cells., Sawsan Yaslam Alyafii

Theses

Metastatic breast cancer is the leading cause of cancer-related deaths among women worldwide. Triple-negative breast cancer (TNBC) is the most aggressive, accounting for 15-20% of all breast cancer cases. As TNBC cells lack the expression of hormone receptors estrogen receptors (ER) and progesterone receptors (PR) and human epidermal growth factor receptor 2 (HER2), TNBCs are unresponsive to hormonal therapy and often become highly resistant when exposed to standard chemotherapy, which has been identifies as a major obstacle in TNBC treatment. Gum Arabic, a natural exudate produced from plants, is widely used traditionally for religious, cosmetics as well as medical purposes …

Molecular Mechanisims Underlying The Anti-Cancer Activity Of Gum Arabic From Acacia Sp. In Triple-Negative Breast Cancer Cells, Sawsan Yaslam Hussein Alyafii

Theses

Metastatic breast cancer is the leading cause of cancer-related deaths among women worldwide. Triple-negative breast cancer (TNBC) is the most aggressive, accounting for 15-20% of all breast cancer cases. As TNBC cells lack the expression of hormone receptors estrogen receptors (ER) and progesterone receptors (PR) and human epidermal growth factor receptor 2 (HER2), TNBCs are unresponsive to hormonal therapy and often become highly resistant when exposed to standard chemotherapy, which has been identified as a major obstacle in TNBC treatment. Gum Arabic, a natural exudate produced from plants, is widely used traditionally for religious, cosmetics as well as medicinal purposes …

Lipocalin-2 Ameliorates The Signs And Outcomes Of Diabetes Mellitus In An Animal Model, Saeeda Mohammed Al Jaberi

Theses

Lipocalin-2 (LCN2) is a new adipocytokine consisting of 198 amino acids. It is also referred to as neutrophil gelatinase-associated lipocalin, siderocalin, uterocalin, α1-microglobulin related protein, or 24p3. LCN2 belongs to a large group of transport proteins that are capable of carrying small and lipid-soluble molecules in blood circulation. It has two membrane receptors, megalin/glycoprotein GP330, which binds human LCN2 and SLC22A17 or 24p3R, which forms complexes with mouse Lcn2 protein. LCN2 is encoded by a gene located at chromosome locus 9q34.11. LCN2 was initially isolated from neutrophil granules released at the site of infection and inflammation in humans and from …

Extraction And Bioactivity Evaluation Of Antioxidant Components From Teucrium Stocksianum Bioss Collected From Uae, Ahmad Ayman Al Salloum

Theses

Recently, the industry of Natural Bioactive Compounds (NBAC) is expanding dramatically due to its high medical potentials. High bioactivity of natural extracts from a wide range of plants is evident from the reported literature. For instance, NBACs show antibacterial, antifungal, antimicrobial, anti-inflammatory, anticancer and antioxidant activities. Teucrium stocksianum Boiss. from the Lamiaceae family is a known herb in the traditional medicine in United Arab Emirates. Multiple bioactivities of T. stocksianum were recorded such as anti-inflammation, analgesia, antioxidation, anticancer, antinociception and antimicrobial bioactivity. In this thesis, the extraction of NBACs from T. stocksianum was studied with Microwave-assisted extraction using Deep eutectic …

Comprehensive Characterization Of The Aerosol And Cloud Condensation Nuclei In The Uae, Farah Hassan Abdi

Theses

Cloud seeding has emerged as a significant alternative freshwater source in the United Arab Emirates (UAE). It is employed to manipulate weather conditions and increase precipitation in specific target regions. These efforts aim to densify clouds and enhance the likelihood of rainfall by inducing nucleation. This technique involves an operational crew aboard an aircraft that disperses substantial quantities of seeding particles, such as salts or silver iodide, into suitable clouds. These particles can serve as cloud condensation nuclei (CCN) and indirectly affect the rate of rainfall. In 2018, cloud seeding operations were responsible for approximately 10-15% of the UAE's total …

Exploring Wireless Data Center Networks: Can They Reduce Energy Consumption While Providing Secure Connections?, Sayed Ashraf Mamun

Theses

Data centers have become the digital backbone of the modern world. To support the growing demands on bandwidth, Data Centers consume an increasing amount of power. A significant portion of that power is consumed by information technology (IT) equipment, including servers and networking components. Additionally, the complex cabling in traditional data centers poses design and maintenance challenges and increases the energy cost of the cooling infrastructure by obstructing the flow of chilled air. Hence, to reduce the power consumption of the data centers, we proposed a wireless server-to-server data center network architecture using millimeter-wave links to eliminate the need for …

The State Of Practice For Security Unit Testing: Towards Data Driven Strategies To Shift Security Into Developer's Automated Testing Workflows, Danielle Nicole Gonzalez

Theses

The pressing need to “shift security left” in the software development lifecycle has motivated efforts to adapt the iterative and continuous process models used in practice today. Security unit testing is praised by practitioners and recommended by expert groups, usually in the context of DevSecOps and achieving “continuous security”. In addition to vulnerability testing and standards adherence, this technique can help developers verify that security controls are implemented correctly, i.e. functional security testing. Further, the means by which security unit testing can be integrated into developer workflows is unique from other standalone tools as it is an adaptation of practices …

Understanding And Identifying Vulnerabilities Related To Architectural Security Tactics, Joanna Cecilia Da Silva Santos

Theses

To engineer secure software systems, software architects elicit the system's security requirements to adopt suitable architectural solutions. They often make use of architectural security tactics when designing the system's security architecture. Security tactics are reusable solutions to detect, resist, recover from, and react to attacks. Since security tactics are the building blocks of a security architecture, flaws in the adoption of these tactics, their incorrect implementation, or their deterioration during software maintenance activities can lead to vulnerabilities, which we refer to as "tactical vulnerabilities". Although security tactics and their correct adoption/implementation are crucial elements to achieve security, prior works have …

Assimilating Requirements Specification For Space Manned Missions: A Novel Approach, Khalfan Mohamed Al Remeithi

Theses

Aligned with the UAE Space Strategy 2117, which aims to establish the first inhabitable human on the Martian Surface by 2117, and with the current enthuse toward space tourism, the thesis proposes a novel framework to assimilate the process of requirement specification for a Manned Mission to Mars surface. Deep Space manned missions are unique and characterized by a set of specific requirements that should be elicited from different sources and stakeholders to ensure the missions’ success. In addition, these missions are highly dependent on the software components in the Command and Data Handling System (CDHS), which is used to …

Lipocalin-2 Ameliorates The Signs And Outcomes Of Diabetes Mellitus In An Animal Model, Saeeda Mohammed Al Jaberi

Theses

Lipocalin-2 (LCN2) is a new adipocytokine consisting of 198 amino acids. It is also referred to as neutrophil gelatinase-associated lipocalin, siderocalin, uterocalin, α1-microglobulin related protein, or 24p3. LCN2 belongs to a large group of transport proteins that are capable of carrying small and lipid soluble molecules in blood circulation. It has two membrane receptors, megalin/glycoprotein GP330, which binds human LCN2 and SLC22A17 or 24p3R, which forms complexes with mouse Lcn2 protein. LCN2 is encoded by a gene located at chromosome locus 9q34.11. LCN2 was initially isolated from neutrophil granules released at site of infection and inflammation in human and from …

A Comparison Of Virtual And In-Person Learning On The Observation Of Puzzle Manipulation Among Neurotypical And Neurodiverse Children, Katrina Verhagen

Theses

Virtual learning has been used long before the COVID-19 pandemic for mental health care or acute conditions but was rarely used as a replacement for in-person visits. Additionally, virtual learning was primarily used for those earning graduate and undergraduate degrees. Virtual learning for individuals younger than eighteen is not typically researched, as it has not been a subject of importance or seen as a replacement for in-person learning. The current study worked with four male children under the age of eighteen from both the neurotypical and neurodiverse populations. Participants were paired into dyads to assess learning done both virtually and …