Digital Commons Network^™

Investigation Of Thickness And Robustness Of Ultrathin Parylene Membranes For Tissue Barrier And Co-Culture Models, Shayan Gholizadeh

Theses

Ultrathin porous membranes are currently used for various biomedical applications, ranging from co-culture systems to tissue barrier models. In the blood-brain barrier model, the intimate proximity between endothelial and glial cells plays a significant role in cell-cell communication and transmigration across the barrier, which cannot be physiologically modeled with conventional co-culture systems typically separating cell types by more than 10 μm. A thickness gradient membrane can enable studies where the goal is to understand the physical characteristics of co-culture arrangement in the barrier model. Here, a robust method to generate ultrathin porous Parylene C (UPP) membranes is developed not just …

Color In Pharma: Color Associations And Expected Efficacies, Rema M. Amawi

Theses

Colors influence our daily perceptions and expectations which can manifest in a variety of ways. This research has three main objectives: the first is to demonstrate this effect on the relationship between the colors of pills and their perceived and expected efficacies. The second is to test this effect on a wide variety of demographics, thereby demonstrating that categories such as ethnicity, location, age, gender, educational levels, and pill usage frequency can influence the choices made by participants. Finally, the third objective is to understand the reasoning behind the choices made by participants, as well as the color associations exhibited. …

Probing The Processes Of Planet Formation Via Studies Of The Ε Chameleonitis Association, D. Annie Dickson-Vandervelde

Theses

Nearby Young Moving Groups (NYMGs), i.e., loose groups of stars of agevicinity, present ideal, accessible observational laboratories for studies on star and planet formation. Studying individual members of NYMGs, especially those hosting protoplanetary disks, in the infrared and millimeter regimes gives astronomers key information on disk evolution and the planet formation process. In this dissertation, I present an analysis of newly available data for members of one of the youngest known NYMGs, the Epsilon Chameleonitis Association (ECA), including detailed studies of two ECA members that host protoplanetary disks viewed at high inclinations (i.e. within ~30 degrees of edge-on). Through analysis …

Biophysical Mechanisms Of Cell-Substrate Interactions Over Porous Membranes, Zahra Allahyari

Theses

There is an increasing interest in the development of microphysiological systems due to their applications in drug discoveries and development of therapeutic strategies. Porous membranes are major components of these in vitro biological systems. The interest in using porous membranes, especially ultrathin ones, stems from their capabilities in providing physiologically relevant tissue interfaces and cell-cell communication between the co-cultured cells. Despite the wide applications of these membranes in biomimetic platforms, their role in modulating different cellular behaviors and the enabling mechanism for these effects are not fully understood. It has been previously shown that porous membranes generally weaken cell-substrate interaction. …

Effects Of Wettability, Lithology, And Permeability On The Optimum Slug Size Of Low Salinity Water Flooding In Carbonates: An Experimental Approach, Hala Khaled Hasan Alshadafan

Theses

Low salinity water flooding has attracted academic and industry communities due to its relatively simple and applicable technology. One of the drawbacks of applying the IOR/EOR technique is the lack of the availability of low salinity water in large quantities at the reasonable cost required for a technically and environmentally successful project. To overcome this problem, the industry proposed to use produced water/sea water after dilution, and reverse osmosis filter technology to achieve the required salinity. Both techniques are quite costly and might hinder the project's economic success. Low salinity water as slug size followed by high salinity water was …

Asssembly And Deployment Of The Uaeu 256-Element Radio Array For Space Science, Ibrahim J.M. Alghoul

Theses

The scope of this project, a 256-element Radio Interferometer Array was assembled and deployed as part of the “UAEU Radio Astronomy Pathway Project”, which is jointly supported by the College of Science and the National Space Science & Technology Centre (NSSTC) at the UAE University. This antenna array was deployed at the NSSTC site, and it will serve as the central part of the ground-based radio observations facility to be utilized for multi-disciplinary space science research at the UAEU. The facility is capable of making low-frequency radio observations of astronomical sources and events, measurements for spacecraft tracking, atmospheric studies, planetary …

Properties Of Certain Connected Graphs Related To Their Edge Metric Dimension, Sanabel Mahmoud Y. Bisharat

Theses

Metric dimension, resolving sets and edge metric dimension are very important invariants for the resolvability of graphs that have been studied and investigated intensively in the literature over the last decades. Their immense utilization in network topology, master mind games, robot navigation and representation of chemical compounds make their study very attractive. This thesis is concerned with the graph-theoretic properties of certain families of connected graphs related to their edge metric dimension. The main objective of this thesis is to study the comparison of metric dimension ver-sus edge metric dimension of certain families of graphs. The study investigates the relationship …

Impact Of Saline Water Irrigation On Date Palm (Phoenix Dactylifera) Associated Bulk Soil Bacterial Communities In Oases Agroecosystem Of Uae, Fardous Abdi Ibrahim Jibar Alhashmi

Theses

Irrigation of date palm (Phoenix dactylifera) with saline groundwater is routinely practiced in the arid agroecosystems of United Arab Emirates (UAE), due to freshwater scarcity. Saline groundwater irrigation is known to deposit salts in the top layers of soil and increase soil salinization. However, how increasing soil salinization affects the belowground bacterial communities, is not well investigated. Soil samples were collected from 14 different date farms where irrigation water source was either non–saline water or saline groundwater. Soil bacterial communities were identified using 16S rRNA gene metabarcoding. The results showed that bacterial diversity (including Shannon diversity, richness, and …

Aerodynamics And Aeroacoustics Optimization Of Vehicle’S Side Mirror Base And Exhaust Pipe, Moath Nayef Mohamed Zaareer

Theses

This thesis is concerned with studying two different vehicle parts in terms of aerodynamics and aeroacoustics. Two main factors determine the efficiency and luxury of the vehicle, the low aerodynamic forces and low noise emission. The aerodynamic drag coefficient is concerned with how easy a vehicle can travel through the air; the lower the value, the less fuel is needed to move the vehicle forward and less air resistance the vehicle faces. The aerodynamic lift coefficient is related to vehicle ground stability, and the more negative the value is, the higher the vehicle's stability. Moreover, the aeroacoustics is concerned with …

Optimization Of Palmitic Acid Production In Chloroidium Sp. Utex 3007 As A Sustainable Source Of Palm Oil Alternative, Amnah Salem Alzahmi

Theses

The increase in palm oil consumption and production has resulted in removing up to 90% of trees in some tropical forests. The green microalgae Chloroidium sp. UTEX 3007 can be an alternative sustainable source of palm oil due to its high palmitic acid content. The objective of this study was to generate a mutant Chloroidium population that is capable of producing and accumulating elevated levels of palmitic acid and to characterize the obtained populations’ lipid contents. The palmitic acid production optimization in Chloroidium sp. UTEX 3007 was conducted via a workflow of ultraviolet (UV) mutagenesis and sorting of high-lipid producing …

The Use Of Actinobacteria To Improve The Efficacy Of Phytoremediation Of Heavy Metal-Polluted Soils In The United Arab Emirates, Fatima Abdulmoneim Hussain

Theses

In an effort to gain the advantages provided by actinobacterial enzyme (1- aminocyclopropane-1-carboxylic acid) (ACC) deaminase (ACCD) in the phytoremediation of heavy metals from the environment, the ability of native actinobacteria with ACC deaminase activity to promote the growth of Bermuda grass (Cynodon dactylon L.) in soils contaminated with nickel nitrate was evaluated under greenhouse conditions. This enzyme hydrolyzes (ACC), the immediate biosynthetic precursors of the hormone ethylene (ET) in plant tissues to ammonia and α keto-butyrate. The main objectives of this study were: (1) Isolating beneficial native heavy metal-tolerant actinobacteria from the United Arab Emirates (UAE) contaminated soil capable …

Un-Fair Trojan: Targeted Backdoor Attacks Against Model Fairness, Nicholas Furth

Theses

Machine learning models have been shown to be vulnerable against various backdoor and data poisoning attacks that adversely affect model behavior. Additionally, these attacks have been shown to make unfair predictions with respect to certain protected features. In federated learning, multiple local models contribute to a single global model communicating only using local gradients, the issue of attacks become more prevalent and complex. Previously published works revolve around solving these issues both individually and jointly. However, there has been little study on the effects of attacks against model fairness. Demonstrated in this work, a flexible attack, which we call Un-Fair …

Regulation Of Activity Patterns In Astyanax Mexicanus Cavefish, Udodirim Nwosu

Theses

Organisms commonly modulate their behavioral activity in relation to the 24-hour solar cycle. This modulation of behavior is driven by a combination of responses to external cues in the environment, such as light/dark visual signals, and internal pattern generators that can persist in the absence of external cues. However, there are animals that live in caves or in the deep sea that are isolated from solar circadian cues. How these animals regulate their behavioral activity in relation to external and internal rhythms is an open question in neuroscience that may help us to understand the mechanisms that other animals, including …

Distribution Patterns Of The Invasive Mussel Arcuatula Senhousia In Mission Bay, San Diego, California: Effects Of Sediment Grain Size And Byssus Thread Production On Predation, Samantha Ahlman

Theses

The ability of bivalves to avoid predation by using defensive behaviors such as burrowing and byssus production may vary depending on the sediment characteristics of a given habitat. The varying sediment characteristics that change with water velocity within estuaries may influence the distribution of bivalves and limit them to areas that optimize their ability to defend against predators. We examined the distribution patterns of the invasive Asian date mussel Arcuatula senhousia relative to the sediment grain size distribution in Mission Bay, an urban estuary located in San Diego, California, USA. Mussels and sediment were collected using an Ekman grab at …

Low Income Housing Residents' Perceived Competency Regarding Hypertension And Diabetes, Tiangela B. Austin

Theses

People of African-American ethnicity are affected by hypertension and diabetes at alarming rates. Prevalence of hypertension and diabetes is thought to be the result of many different factors. When considering why each or both of these diseases disproportionately affect this population of people, much focus should query around factors such as socio-economic status, culture, beliefs, diet, lifestyle, and patient perceptions. Evaluation of perception is an integral component in demystifying disease morbidity and mortality. This study evaluates the perception of low-income housing resident's perceived ability to maintain normal blood pressure and blood glucose levels.

The Origin Of Knowledge And Interest In Interpreting: Mapping Out White And Bipoc Interpreters Experiences In Rochester, Ny, Jonathan Roman

Theses

High schools across the United States, located in a range of communities, offer American Sign Language (ASL) courses as a foreign language option. Some are in 'disadvantaged communities'; a school area where there is a lack of economic resources present for students to benefit from (McKillip, M. E. E., Godfrey, K. E, & Rawls, A, 2012). As terminology would suggest, the inverse of that are schools in advantaged communities. Also in the past, there have been BIPOC recruitment efforts for associates and bachelor level signed language interpreter training programs (ITP) by organizations like the National Interpreter Education Center (NIEC). But …

Health Service Cost And Use Associated With Advance Directive Documentation Among Patients With Copd, Brandon Duck

Theses

Little available research has focused on the question of whether advanced-careplanning has the potential to impact health-care related spending especially in patients with chronic and incurable conditions such as Chronic Obstructive Pulmonary Disease (COPD). The purpose of this secondary data analysis was to investigate the prevalence of Advance Directives (ADs) documented in the electronic health records, compare healthcare spending between individuals with versus those without ADs on file, and examine socio-demographic variables as potential predictors of having documented ADs on file for patients with COPD in a large tertiary academic medical center in 2012 and 2013. This retrospective cohort study …

Buyer Prediction Through Machine Learning, Rashed Ibrahim Karmostaje

Theses

Targeted marketing has grown in popularity in recent years, as well as recognizing when a consumer will desire a commodity may be extremely important to a business. Predicting this demand, however, is a complex procedure. Businesses, promoters/marketers, and sellers are using machine learning approaches to execute buyer prediction. This study focuses on when a customer would buy fast-moving retail merchandise by evaluating a customer’s purchase history at partner vendors. The projections should be used to customize special discounts for customers who are about to make a purchase. In addition, buying behavior is a set of consumption habits that can be …

Hourly Demand Prediction Of Shared Mobility Ridership, Eman Asa'ad

Theses

This research focuses on predicting the hourly number of bikes needed using Citi bike data. Micro mobility is the new trend that serves the transportation sector in any city. With the development of technology and introduction of new modes, comes new challenges. Bike sharing is the most developed and standard micro mobility device with extensive data sources. In this research we introduce the rebalancing bike sharing problem, which is very recent and interesting problem. Bikes are being ridden from a station and returned to another, not necessarily the same one of departure, this procedure can cause some stations to be …

Opinion Mining Of Phone Sitting Feature, Atiq Yousuf Ahmad

Theses

This report aims to evaluate opinion mining of customers about phone sitting features in cell phones in different brands across the world by using data mining techniques. Therefore, Data for the report has been collected from data scrapping in Qoura which collects opinion of customers. The collected information from the data base has evaluated by using sentiment analysis. The collected information from Qoura transforms the content and extracts data from API’s. In relation to this, information obtains from the research contributed for providing useful information for these features. The collected information from application scrapping has been analysed through sentiment analysis. …

Predictive Policing, Amna Ali Al Boom, Shaikha Khalid Bin Thani

Theses

UAE is one of the safest countries to live in, but that does not indicate that the country does not witness crimes, During the COVID-19 pandemic, the country saw an increase in cyber and digital crimes. Apart from cybercrime, there are other types of crimes, such as street crimes and violent crimes. Data analytics aids Dubai Police to predict crimes. Criminal investigation is one of the fields that is very interesting and is taught in colleges and academies. Data analytics opens the door for studying the details of each crime. Data mining tools consist of a variety of techniques that …

Exploring Digital Checking: Evolution, Technology, And Future Directions, Mohammed Hasan Saleh Bamasood

Theses

This capstone project sought to explore the evolution of digital/electronic checking, assess how technology and other factors fueled the development of digital electronic checking, evaluate if the sampled research literature indicate that the desirable attributes of a payment instrument have been fully addressed; and analyze issues that deter the digital/electronic checking system to fully integrate the six most desirable attributes for a payment instrument in order to recommend possible directions for future research and design implementation. The project utilized integrative review as its methodology and adopted a theoretical framework based on the input-process-output model to guide the analysis and presentation …

The Power Of Mind Control, Ali Adnan Majed

Theses

Electroencephalogram (EEG) is a technology that has been used for so long to read and record neurological activity in the brain. EEG recordings are widely used nowadays for different neurological applications. Emerging technologies that can detect and analyze eye focus using EEG based technology are now are developing quickly. At a relatively affordable cost one can own an EEG kit. With the help of predisposed algorithms or the help of developers, new algorithms for different commands are being worked on. Along with other technologies EEG eye tracking can be beneficial in many domains such as, psychology, marketing, automotive industry, and …

Evaluating Psychiatric Nursing Competencies Applied To Emergency Settings: A Pilot Role Delineation Study, Joanna J. Mello

Theses

Aims: 1) To examine emergency department (ED) nurses' reports of a) frequency b) importance and c) self-efficacy related to the application of recommended psychiatric nursing competencies in three domains (i.e., assessment, tasks, knowledge).

2) To test the extent to which frequency and importance independently predict ED nurses' self-efficacy related to the application of the competencies in their daily work.

Finding The Meaning In Ceramic Patterns From A Chaco Canyon Burial, Michael Lucero

Theses

The focus of this research considers the culture of the Ancestral Puebloans from the American Southwest region. This project reflects and examines the cultural arts and practices in relation to funerary aspects of the ancient Puebloan society that flourished in Chaco Canyon, located in present-day New Mexico. While investigations of historians and archaeologists have concentrated on findings within the Great House of Pueblo Bonito in Chaco Canyon, research focused on the structures and objects within rooms. The base of this research examines a collective set of vessels from burial room 33, excavated from the original exhibition of George H. Pepper, …

Sirplus - A Task Management System For Individuals With Executive Dysfunction, Thomas Roberti

Theses

A significant portion of the population struggles with executive functioning and task management. This project explores the pain points for organizing, initiating, and finishing tasks and proposes a design to address these problems. The objective of this project is to relieve the stress and anxiety people with executive dysfunction often experience with tasks. The design process for this project considered different product and interface strategies to help users with their tasks through positive motivation and rewards. Initial user testing showed that information overload and forgetfulness were barriers to setting and managing tasks. Furthermore, the act of crossing an item off …

Spiral Of Silence And The Use Of Social Media By Sexual Violence Survivors, Tanvi Thakur

Theses

Sexual violence has been a global health concern for over decades, but activism on social media such as #MeToo has increased public discourse and awareness about this issue. In its early advent, the #MeToo movement raised ample awareness, stimulated free discourse, and placed this issue as an important concern to address. While countries have implemented austere laws to prevent such hate crimes against women, societal norms and codes have deemed this type of violence as stigma or taboo resulting in the underreporting of the majority of sexual violence-related crimes. The National Intimate Partner and Sexual Violence Survey conducted in 2015 …

Resource Use And Water Implications Of Material Consumption In Consumer Electronics, Hema Madaka

Theses

Rapid technological innovation has introduced a broad spectrum of materials in the consumer electronics sector. Consumption of these materials increases the demand for water and potentially discharge contaminants into the water resources across their life cycle, exacerbating freshwater scarcity and pollution. These water impacts have not yet been fully studied, as most literature on consumer electronics focuses on supply chain energy, carbon footprint, or end of life management. Evaluating water impacts requires data on material content, life cycle water consumption and emissions at spatial level, and availability of impact assessment models that connects life cycle data to water impacts. Data …

Racial Disparity In Health Insurance Acquisition In The State Of California, Florence Jill Polina

Theses

Racial disparity continues to be a struggle in America. The main purpose of this project was to determine whether there is a relationship between race and the acquisition of health insurance in adult residents of California who are younger than 65 years old. Through secondary data gathering, analysis of an existing racial disparity in health care insurance acquisition was accomplished. The results of the project indicate that a relationship exists between race and health insurance acquisition, thereby promoting an opportunity to determine hindering factors and discuss recommendations that can help to alleviate them.

Behind The Plea: Factors That Shape Plea Bargaining Outcomes, Jonathon Chierchio

Theses

Four working papers on the topic of plea bargaining:

Plea Bargaining and Prosecutorial Discretion

Legal and Extralegal Factors in Plea Bargaining

Types of Defense and Their Impact on Plea Bargaining

Pleading Guilty to Lesser Charges: Which Factors Matter?