Digital Commons Network^™

Skeleton-Based Hand Gesture Recognition Using Data-Level Fusion, Oluwaleke Yusuf

Theses and Dissertations

Hand Gesture Recognition (HGR) is a form of perceptual computing that allows artificial systems to capture and interpret human gestures. HGR has applications in human-machine interaction, virtual reality, augmented reality, and human behavior analysis. The human hand can assume a near-infinite number of poses and orientations to form myriad gestures, thus increasing the difficulty of the HGR task.

The hand skeleton of connected joints effectively describes the hand’s geometric shape and thus contains richer semantic gesture information while eliminating noise from individual differences in physical hand characteristics. The efficacy and computational efficiency of skeleton-based HGR frameworks can be significantly enhanced …

The Causal Effect Of Firm Productivity On Climate Change: Evidence From The Mena Region, Shahd El Azhary

Theses and Dissertations

The relationship between firm productivity and climate change matters importantly to sustainable growth goals. The MENA region is very vulnerable to desertification because of an increase in temperature. The purpose of this study is to assess the productivity of firms, by sector, on climate change through a panel VAR (PVAR) model to investigate firms’ total factor productivity (TFP) on temperature increases on the region. The positive relationship between both variables for most sectors, except for the financial and basic materials sectors, demonstrates the need for policy makers to formulate harsher regulations against climate change.

Polyethersulfone Thin-Film Nanocomposite Membrane Embedded With Amine-Functionalized Graphene Oxide For Desalination Applications, Ahmed Bahaeldin

Theses and Dissertations

Thin-film nanocomposite (TFN) desalination membranes were prepared based on a polyethersulfone (PES) support, where the polyamide (PA) layer was embedded with amine-functionalized graphene oxide (GO). The effect of adding various concentrations of functionalized and un-functionalized GO on the desalination performance, hydrophilicity, and morphology of the membranes was additionally assessed throughout this work. Scanning electron microscopy (SEM) measurements were used to assess the morphology of the membranes in combination with Brunauer-Emmett-Teller (BET) analysis. Contact angle measurements were used to gauge the hydrophilicity of the synthesized membranes. The membrane with the best desalination performance contained 1x10^-3 wt/vol% of functionalized GO in …

The Rise Of Irregular Domestic Work Amongst Female Migrants In Italy, Elena Romeo

Theses and Dissertations

In today’s globalized world, hardship and geopolitical and economic crises have led to the lack of decent work, and this resulted in new, migratory movements. Women have joined these migration flows in growing numbers, which has important consequences for gender equality in both countries of origin and destination (ILO,2015). Hence, migration has a new character, and it includes many women who emigrate from their country because of a lack of access and choices to jobs, exploitation, and lower wages compared to men in Europe. In this context, one can affirm that today irregular migration is on the rise, especially in …

Alternative Child Care Governance: The Kafala Family-Based Care Arrangement In Egypt, Heba El Azzazy

Theses and Dissertations

Over the past decade, Egypt has witnessed several changes in relation to its alternative care system for orphans and children without parental care. Starting 2014, the Egypt government along with Civil Society actors started to adopt the UN General Assembly guidelines on Alternative Care; which call on States to take solid actions to develop their respective deinstitutionalization strategy that aims towards the progressive elimination of institutional cares and prompting family-based care approaches for children deprived of parental care. According to the current situation, kafala is the main alternative family- based care option practiced in Egypt. Generally, there is very limited …

Artificially Intelligent Communication: An Exploratory Study On Replika Mobile Application, Nouran El-Ashry

Theses and Dissertations

This paper aims to address artificial intelligence from a communication perspective by looking at the usage of Replika, an AI-based platform. A quantitative survey was conducted to analyze the frequency of usage, attitude toward the application and the level of attachment to it. Moreover, qualitative questions were developed to get in-depth understanding of the type of relationship users have with their Replika application and reasons behind their usage. Results show no significant relationship between demographics and the application consumption except for age where older users communicate more frequently with the application than younger ones. Moreover, attachment levels were related to …

Youth Perceptions And Motivations Towards Entrepreneurship In Egypt And Their Policy Implications: A Qualitative Study, Yara Ali Hassan

Theses and Dissertations

Entrepreneurship is one of the key driving forces for economic development. The entrepreneurship ecosystem in Egypt has been growing exponentially whereas a large number of public and private institutions have been established to support young entrepreneurs to start their own business. Despite of the growing attention towards entrepreneurship, few studies have investigated the real motives of Egyptian youth who decided to join the entrepreneurship field. Thus, this study aims to advise policy makers through studying youth perceptions and motives towards entrepreneurship and the underlying factors that shape their perceptions. The study has been conducted using a qualitative approach and purposive …

Cognitive Assessment Of Health-Care Workers Exposed To Ionizing Radiation And The Assessment Of Radiation Safety Awareness In Different Radiation Oncology Hospitals In Egypt, Basma M. Saleh

Theses and Dissertations

The increase in cancer cases and subsequent increase in chemotherapy and radiotherapy sparked worries over hospital workers' health and safety. There is a global trend towards routine assessment of awareness, safety measures, and radiation protection culture among healthcare workers. There is also a trend towards monitoring the various associations between radiation exposure and different health outcomes. In low- and middle-income countries, the use of advanced techniques and biomarker tests to track the health status of the workers is hard to achieve. This is due to the scarce resources and economic instabilities and that is why using a survey as a …

An Artificial Intelligence Tool For The Selection Of Delay Analysis Technique In Construction, Mostafa Farouk

Theses and Dissertations

The increasing complexity and magnitude of projects impose greater impact of delays on stakeholders. Construction delays are a major source of disputes in construction projects. Since a construction project depends on interactions and shared responsibilities among parties, research works were directed toward identifying delay causes, quantifying their impacts, and proposing ways to deal with them. Several delay analysis techniques (DATs) are available, but when applied to the same project’s delays provide different results. Thus, the selection of the DAT to use in evaluating delays becomes vital. Reviewing the literature, it has been realized that often there are disagreements, which lead …

In-Field Solar Panel Assessment And Fault Diagnosis, Muhammad Elgamal

Theses and Dissertations

Photovoltaic energy is a green energy that suit from small houses to high-power stations spanning large areas. In such large areas, monitoring individual panels can be a tedious task, especially if it was required to identify operational faults of these panels. Photovoltaic 4.0 technology depend on collecting data from each station and feeding them to a central processing system that can analyze operation data and hopefully locate when a fault happens. In such method, it is crucial to be accurate as much as possible and for measuring device to be accurate as well to have a clear judgement. In this …

Optimization Of Contractor’S Cash Flow Based On Subcontractor’S Payment Management Plans, Helen Ghali

Theses and Dissertations

In many counties, the construction industry relies heavily on outsourcing packages to execute their projects and expand their businesses to fit in the diverse market. Such extensive integration of outsourced subcontractors is becoming an influential factor in contractors' cash flow management. Accordingly, subcontractors’ price selection and their respective payment plans are important phenomena and pivotal components for the well-being of the contractor’s cash flow. Cash flow management is considered one of the most critical areas analyzed by contractors when getting into a project. Contractor’s cash flow is built from a pool of interrelated information depending on subcontractors, suppliers trade credit …

Students’ And Teachers’ Perceptions Of Using Memes In Esl Classrooms, Fadwa Youssef

Theses and Dissertations

Using humor in the language classroom has proven to be an effective pedagogical teaching tool that builds rapport between students and teachers. It also reduces anxiety and affective filter as well as increases students’ performance and willingness to communicate in class using their L2 (Azizinezhad & Hashemi, 2011; Banks, 2014; Soares, 2015). Previous studies used humor broadly starting from humorous comments in class to funny TV shows, movies, or songs. Some studies went further using funny memes in class and fewer studies went all the way making students create memes as part of their class requirements (Purnama, 2017). Results of …

Differential Transcriptional Alterations In Detoxification Genes In Parkinson’S Disease In Egypt, Nourhan Shebl

Theses and Dissertations

PD is the most common motor neurodegenerative disease worldwide. The underlying cause of PD is still unknow, owingthis to the complexity of the disease. Often, genetics and environmental factors are collaborating in the initiation of the disease. Despite the diversity of its genetical and environmental profiles, the Egyptian population is one of the mostunderrepresented population in terms of PD research. In this study, we investigated PD through various perspectives tohighlight the complexity of the disease in Egypt, taking into consideration the diversity of the Egyptian population. We recruited PD patients and reference controls from 4 governorates: Cairo, Giza, Alexandria, and …

Impact Of Social Media  On Public Perception Of Government Covid-19 Response Efforts, Taher Taher

Theses and Dissertations

This research aims to understand this phenomenon to provide insights into how governments can perform better in times of crisis regarding social media and its impact on public opinion. This research aims to understand how social media impacts public perception of government COVID-19 response efforts by studying Facebook comments, likes, and reactions (emoticons).

The study was based on data gathered from Facebook comments on the daily infographic COVID-19 statistics from the official site of the Ministry of Health and Population. The sampling frame is the 52 weeks of 2020, January to December, through random sampling resulting in 546 comments. The …

Binge-Watching Effect On Egyptian Youth Perceptions: The Case Of Netflix, Layla Umara

Theses and Dissertations

With the emergence of VOD content worldwide, and its increasing popularity in the Middle East and Egypt, this paper examines the effect of binge-watching the subscription video on demand streaming service “Netflix” on Egyptian Youths’ perceptions and how they perceive the real world. The Study tests both the number of hours spent watching Netflix and the frequency of binge-watching on the impact on perceived reality of societal values, third person effect and the acceptance of controversial societal values in Egypt. It also studies whether the influence of the cumulative long-hours of exposure to Netflix may give a new dimension to …

The Egyptian National Action Plan Of Antimicrobial Resistance: Governance Mechanism And Public Awareness, Aalaa Afdal Mogheith

Theses and Dissertations

This research aimed primarily to understand the governance mechanism adopted for improving the public awareness on Antimicrobial Resistance (AMR) as the first goal of the Egyptian National Action Plan (NAP) for curbing AMR. The secondary purpose was to assess the public awareness, and to identify areas for improvement on raising awareness on AMR. A mixed approach was adopted; firstly, eight in-depth interviews with different stakeholders` representatives involved in the NAP development were held to understand the governance of the NAP. Secondly, a public awareness survey was conducted on 565 respondents to assess their knowledge and awareness on AMR and antibiotic …

Price Prediction Models Of Metals Considering International Crises, Haidy Ghali

Theses and Dissertations

Steel, copper, and aluminum are essential raw materials in the construction industry and are used in any construction project whether commercial, industrial, or mega projects. During normal market conditions, the prices of these metals normally fluctuate due to general inflation in the economy; however, during crises, the prices of these metals significantly fluctuate exposing both contractors and suppliers to an unexpected financial risk. Various researchers have developed metal prediction models for normal market condition and did not consider testing it on the crises time; also, the developed models are devised using past metal prices or macroeconomic indicators of trading countries …

Carbon Dioxide Capture Potential Of Chitosan-Nanocrystalline Cellulose Aerogel Composite Materials: Synthesis, Functionalization, And Characterization, Victor Oghenekohwo

Theses and Dissertations

The carbon dioxide capture technology has been established as an invaluable player in the current global efforts to allay the warming of the planet and climate change. In this connection, the study centers on the valorization of waste organic materials for the application described herein. The sorbents, sourced from a combination of by-products of food processing and agricultural residue waste products, viz. seafood waste and sugarcane bagasse, showed prospects for selective carbon dioxide capture, adsorbing up to 5.78 mg/g of the gas at 273 K and 2.82 mg/g at 298 K, as observed on the Micromeritic ASAP 2020 surface area …

An Epileptic Seizure Detection Method From Eeg Signals Based On A Classifier-Driven Feature Reduction Technique, Raymond N. Kamel

Theses and Dissertations

Epileptic seizure detection can improve the quality of life of epileptic patients, allow for more accurate medication, and minimize the risk of sudden unexpected death in epilepsy (SUDEP). This thesis work aims to develop a robust and stable algorithm for epileptic seizure detection through the classification of EEG signals. To achieve this aim, a methodology is proposed to develop a classifier that can differentiate between the healthy (normal), interictal, and ictal states of EEG signals, while maximizing the classification accuracy and minimizing the computational redundancy. The main pillar upon which this methodology is designed is using a problem-specific classifier-driven feature …

Security Governance Strategies: Comparing Rebel Groups In Lebanon And Syria, Nourhan Samir Ibrahim

Theses and Dissertations

The prevalence of civil wars especially after the end of the Cold War led to the rise of rebels who control parts of national states in the absence or weakness of the central government. Therefore, scholars who are interested in studying civil wars started to give more attention to how these rebels function after controlling a territory. It is substantial to study rebels who govern since they influence the post conflict peace-building. This study aimed at exploring the different factors that contribute to the sustainability of rebel governance during civil wars, and how this sustainability might lead to inclusion in …

Filling The Vacant Space: A Close Reading Of Kant’S Dialectic Of Pure Practical Reason, Mae Ashraf Ali Saafan

Theses and Dissertations

The main aim of this thesis is to explore Kant’s central notion of rational belief. Kant’s account of rational belief could be viewed as the ground on which rational moral agents assent to propositions that enable them to avoid any practical incoherence as they engage in their moral duty.

The paper will offer a close reading of the dialectic of pure practical reason, particularly the doctrine of the postulates of practical reason. In this doctrine, Kant argues that although there is no theoretical proof for or against freedom, God, and the immortality of the soul, rational moral agents ought to …

Measuring Citizens’ Acceptance And Usage Of E-Government Services: Applying The Technology Acceptance Model (Tam) In Egypt, Rana Khamis

Theses and Dissertations

The significance of public services delivery has been realized by all governments worldwide. An overarching tool to enhance government productivity and enabling citizen-centric public services, especially in developed countries, has proven to be the electronic government (e-Government).

While many scholars focused on the supply side of e-government, few researches studied e-government adoption from the citizens’ perspective. To contribute to filling this research gap, this study aimed at measuring the perceptions of citizens towards the adoption of e-government services in Egypt. Using Technology Acceptance Model (TAM), the main objective of this research was gaining a better understanding of the factors affecting …

Waste-Derived Hybrid Nanocomposite For The Simultaneous Removal Of Antibiotics And Dyes From Water Bodies, Abdelkader Ahmed

Theses and Dissertations

A novel eco-friendly approach was used to synthesize a hydroxyapatite-carbon nanocomposite (HAP-C) by utilizing the industrial waste of cement kiln dust (CKD) as a source of calcium for the synthesis. Citric acid was first used to chelate the calcium from CKD, then the chelate was converted into a mixture of calcium carbonate and carbon by calcination at 450°C for 1 h. The mixture was used as a precursor for the synthesis of HAP-C by reacting it with ortho-phosphoric acid via a precipitation method. HAP-C was then calcined at different temperatures of 400, 500, and 700°C under inert atmosphere, with a …

Adsorption Of Antibiotics In Wastewater By Stevia Rebaudiana Zinc Oxide Nanoparticles, Hania Guirguis

Theses and Dissertations

Green zinc oxide nanoparticles (ZnO NPs), synthesized using Stevia rebaudiana extract, are investigated as novel adsorbents for the removal of the antibiotics ciprofloxacin (CIP) and tetracycline (TET) from water. The green ZnO NPs were synthesized using a novel, rapid and ecofriendly technique that utilized a natural source with high sugar content as a reducing agent and a less energy intensive approach that did not require annealing or calcination at high temperatures. The particles are mesoporous, with a hexagonal wurtzite structure, a BET surface area of 15.28 m2/g and a size range of 37.36-71.33 nm. At pH 5, the green ZnO …

An Artificial Intelligence Framework To Contractor Financial Prequalification, Salah Elgamal

Theses and Dissertations

Financial distress in the construction industry always causes major disruptions that

usually result in a rippling effect on the economy. Avoiding such defaults is a top priority for employers to meet their demands. Artificial Intelligence (AI) models have provided increased accuracy in predicting financial distress compared to statistical, fuzzy and logistic regression models, and other classification models. The main objective of this work is to support project employers in pre-qualifying contractors by predicting the status of construction contractors during a bid analysis to disqualify contractors with a high probability of experiencing financial distress during the project duration. Eight financial indicators …

An Analysis Of The Ash’Ari-Mu’Tazilite Conflict In The Ḥāshiya Of Ibn Al- Munayyir In Al-Kashshāf By Al-Zamakhsharī, Nabil Haskanbancha

Theses and Dissertations

In this thesis, I analyze the Sunni Ash’ari response to the Mu’tazilite Qurʾan commentary al- Kashshāf written by al-Zamakhsharī (d.538/1144), and the significant role of the gloss commentary (hashiyā) in highlighting the theological debates between Ash’ari and Mu’tazilite scholars. Alongside the main commentary, this thesis demonstrates the pivotal role of the hashiyā in Islamic studies through its intersection with theology and philology, uncovering active debates on the critical interpretations of the text by exegetes. Al-Kashshāf is the most commented text in the tafsir genre despite its Mu’tazilite influence, mostly receiving criticisms from conservative Sunni scholars. The first Ash’ari scholar to …

Revolution In Cuba And Iran: Toward A Unified Theory Of Analysis, Mason Sims

Theses and Dissertations

This thesis seeks to fill a small gap in the study of revolution through unifying approaches and theories utilized to explain the complex social phenomenon. To facilitate this, a large portion of the work focuses on revolution literature which has been chosen to represent authors from the earliest generations covering the subject to the more recent. In compiling and reviewing these works, it can be seen that there exist common lines of not just explanation, but also a continuous series of critiques resurfacing within each generation. Within this compilation lies the roots of the theory presented in this thesis, that …

The Family Values: Is It Really About The Family? Analyzing The Family In The Egyptian Discourse Through A Sociological Lens, Taher Sabala

Theses and Dissertations

The Egyptian state has put on its shoulders the responsibility of protecting the family and its values. But how this family, in a massive society like Egypt, can be defined? In this paper, I argue that it has never been about protecting the family. However, it is an attempt to shape the citizens into small separate hives which give the State the power to gain access to the intimate details of its citizens’ lives through which they can be easily monitored, managed, and controlled. By analyzing Michel Foucault’s work on government, power, sexuality, and family, I travel through a historical …

Computational Identification Of Circulating Micrornas Associated With The Early Stage Of Ovarian Cancer, Ahmed Abdelrahman El Hosseiny

Theses and Dissertations

Background: Ovarian cancer is the leading cause of death among gynaecological malignancies. Its high fatality rate is due to the difficulty of early detection. Current screening methods are inadequate, and therefore, a new less-invasive early detection method is urgently needed. MicroRNAs are promising biomarker candidates for cancer detection, however, their potential for early detection use is understudied. Aim of the work: We sought to identify sensitive and selective microRNA markers for early diagnosis of ovarian cancer from blood serum samples through computational analysis. Methods: In this investigation, we used bioinformatic methods to analyze MicroRNA-Seq data obtained from public databases for …

Adherence To Antihypertensive Medications Among African Americans Adults, Obiageli Obah-Mbanefo

Dissertations

Purpose: To describe adherence to antihypertensive medications among African Americans adults aged 35 to 65 years in south Los Angeles.

Study Aims: Aim 1: Describe patient sociodemographic factors (age, gender, education, insurance, employment, living arrangement and income), clinical factors (history of current depressive symptoms, comorbidities, comorbidity Charlson score and number of comorbidities), health literacy level, and medication adherence to hypertension (HTN) medications. Aim 2: Describe the relationships between sociodemographic factors, clinical factors, health literacy level, and medication adherence. Aim 3: Compare medication adherence between patients with high health literacy level, low possible health literacy, and low health literacy level.

Background: …