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Optimizing the Performance of a Microwave Tomography System for Biomedical Applications
No full textA Master of Science thesis in Electrical Engineering by Zainab Abuowda entitled, “Optimizing the Performance of a Microwave Tomography System for Biomedical Applications”, submitted in April 2025. Thesis advisor is Dr. Amer Zakaria and thesis co-advisor is Dr. Nasser Qaddoumi. Soft copy is available (Thesis, Completion Certificate, Approval Signatures, and AUS Archives Consent Form).College of EngineeringDepartment of Electrical EngineeringMaster of Science in Electrical Engineering (MSEE
INScription: Department of International Studies (INS) Issue #27 (January 28, 2025, Issue 5)
Full text linkCollege of Arts and SciencesDepartment of International Studie
A Novel Steel Reinforcement Scheme for 3D Printed Concrete Beams: A Study on Shear Behaviour
No full textA Master of Science thesis in Civil Engineering by Mohamed Ashraf Khalifa entitled, “A Novel Steel Reinforcement Scheme for 3D Printed Concrete Beams: A Study on Shear Behaviour”, submitted in June 2025. Thesis advisor is Dr. Adil Tamimi and thesis co-advisor is Dr. Sami Tabsh. Soft copy is available (Thesis, Completion Certificate, Approval Signatures, and AUS Archives Consent Form).This thesis presents an innovative steel reinforcement scheme for 3D Printed Concrete (3DPC) beams, developed to enhance structural performance while maintaining compatibility with the 3D Concrete Printing (3DCP) automated construction technology. The proposed reinforcement system integrates U-shaped structural steel channels with welded shear studs directly into the printing process to develop a composite beam system that eliminates the need for conventional formwork or manual reinforcement placement. A total of twenty shallow beams were fabricated using a robotic-arm extrusion printer and tested under both three-point and four-point static loading configurations to assess the influence of key study parameters such as beam width and height, channel geometry and orientation, and level of composite interaction on the shear behaviour. Experimental results confirmed that the proposed reinforcement scheme significantly increased shear strength, improved ductility, and enhanced residual load capacity, all whilst supporting full-autonomous construction. The beam tested beam specimens exhibited an average Ductility Index (η) of 2.3, an average Energy Dissipation Factor (EDF) of 2.9, and more than one-half of them demonstrated a Residual Capacity Factor (RCF) exceeding 50% at twice the displacement at peak load, indicating substantial deformation capacity and continued load resistance beyond failure. This study establishes that the integration of structural steel channels into 3DPC beams offers an automation-friendly solution to the longstanding challenge of reinforcement in 3DPC structures. A theoretical model based on the principles of mechanics of materials was also considered to determine the fraction of the shear strength contributions by the printed concrete and structural steel channel in resisting the applied load effect. The model demonstrated that the steel reinforcement accounted for an average of 7.5% of the total shear capacity of the composite sections considered in this study. Two predictive analytical models are proposed for the shear strength of 3DPC beams reinforced by steel channels with welded shear studs: one implicitly includes the contribution of the steel channel to shear resistance within that of the concrete, while the other explicitly quantifies the shear contribution of the steel channel.College of EngineeringDepartment of Civil EngineeringBachelor of Science in Civil Engineering (BSCE
Shear Strength Behavior of Tire Shred-Dune Sand Admixtures
No full textA Master of Science thesis in Civil Engineering by Abrar Ahmad entitled, “Shear Strength Behavior of Tire Shred-Dune Sand Admixtures”, submitted in July 2025. Thesis advisor is Dr. Magdi El-Emam. Soft copy is available (Thesis, Completion Certificate, Approval Signatures, and AUS Archives Consent Form).The use of construction and demolition waste in geotechnical applications has emerged as an effective and sustainable approach to enhancing soil performance while reducing environmental impact. Recycled Concrete Aggregate (RCA) has demonstrated significant potential as a soil stabiliser, improving shear strength properties, bearing capacity, and overall soil performance. Despite the widespread availability of dune sand in the UAE, its use in geotechnical engineering is often limited due to its inadequate shear strength and poor gradation. Mechanically stabilized due to sand with RCA reinforcement could be a potentially suitable backfill material for many civil infrastructures. Although several studies have investigated the application of recycled aggregates in soil stabilisation, there is still a lack of agreement about the optimum RCA content and particle size to improve shear strength. This study aims to examine the shear strength characteristics of RCA-dune sand mixes with varying RCA concentrations and particle sizes, and to identify the optimal mix configuration for backfill applications. The main soil parameters were peak and residual shear strength, internal friction angle, stiffness (G₅₀), and ductility. Three RCA gradations (5–10 mm, 10–20 mm, and a 50:50 blend of both sizes) were utilised to evaluate 52 samples with RCA content of 10%, 20%, 30%, and 40% by weight using a specially made large-scale direct shear (LSDS) equipment. Experiments were performed under initial normal stress of 20, 40, 60, and 100 kPa. The findings indicated that the incorporation of RCA substantially enhanced the shear strength of dune sand, with maximum strength improvements reaching 157% relative to pure dune sand. The 10–20 mm RCA at 30% composition yielded the maximum shear strength and internal friction angle of 59.01°, while the peak residual friction angle of 45.2° was recorded at the same composition. Nevertheless, stiffness often decreased beyond 30% RCA due to increased voids and particle segregation. These findings offer significant insights into the possibility of utilising RCA as a dune sand stabiliser in arid regions such as the UAE and support the wider implementation of sustainable construction techniques.College of EngineeringDepartment of Civil EngineeringMaster of Science in Civil Engineering (MSCE
An Adaptable Framework For Strategic Optimal Planning For EV Charging Technologies
No full textA Doctor of Philosophy Dissertation in Engineering Systems Management by Sarah Mahmoud Atef Hosny Kandil entitled, “An Adaptable Framework for Strategic Optimal Planning for EV Charging Technologies”, submitted in April 2025. Dissertation advisor is Dr. Akmal Abdelfatah and dissertation co-advisor is Dr. Maher Azzouz. Soft copy is available (Dissertation, Completion Certificate, Approval Signatures, and AUS Archives Consent Form).This thesis presents a comprehensive planning framework designed for large-scale highway networks, aiming to strategically allocate various electric vehicle (EV) charging technologies, including Fast Charging (FC), Battery Swapping Stations (BSS), and Wireless Charging Lanes (WCL), alongside renewable energy resources. This adaptable and scalable framework facilitates the deployment of charging technologies to extend the driving range of EVs with minimal downtime. The research adopts a multidisciplinary approach that combines dynamic traffic simulations and electrical grid optimization. This integration ensures the efficient placement and operation of charging infrastructures, effectively minimizing the waiting time for EV users and maintaining traffic flow and grid functionality at minimal costs. A critical finding is that in high congestion and penetration scenarios, EV load can exceed typical demands by up to 36%, highlighting the significance of EV future demands. Moreover, FCS and BSS can fully satisfy the charging demand. However, BSS incurs higher costs at increased penetration and congestion levels but offers significantly reduced waiting times compared to FC. Conversely, WCL alone fails to meet over 30% of vehicle charging needs, illustrating its limitations as a standalone option and emphasizing the need for its integration with other technologies. Strategically combining FC, BSS, and WCL offers the best balance of cost, service level, and load management. This combination achieves a cost reduction of 13.53% compared to the combined use of BSS and WCL and 2.2% compared to BSS alone. It also enhances service levels by 51.61% compared to FC alone and reduces peak load by 16.31% compared to FC alone, demonstrating a balanced approach that optimizes infrastructure efficiency and responsiveness. The integrated use of these technologies ensures a more equitable distribution of load across the grid, presenting a robust solution for managing the growing demands of EV charging in diverse traffic and congestion scenarios. Additionally, the framework validates the suitability of highway and transmission line settings for robust EV infrastructure deployment. It lays the foundation for future research and development in smart transportation networks, emphasizing the need for an integrated approach to support sustainable energy and transportation systems.College of EngineeringDepartment of Industrial EngineeringPhD in Engineering - Engineering Systems Management (PhD-ESM
Optimal Participation of Virtual Power Plants in Energy Markets
No full textA Doctor of Philosophy Dissertation in Engineering Systems Management by Fatemeh Marzbani entitled, “Optimal Participation of Virtual Power Plants in Energy Markets”, submitted in April 2025. Dissertation advisor is Dr. Ahmed Osman and dissertation co-advisor is Dr. Mohamed Hassan. Soft copy is available (Dissertation, Completion Certificate, Approval Signatures, and AUS Archives Consent Form).College of EngineeringDepartment of Industrial EngineeringPhD in Engineering - Engineering Systems Management (PhD-ESM
Performance Enhancement of Field-Oriented Induction Motor Control
No full textA Master of Science thesis in Electrical Engineering by Ahmad Rizwan entitled, “Performance Enhancement of Field-Oriented Induction Motor Control”, submitted in May 2025. Thesis advisor is Dr. Rached Dhaouadi and thesis co-advisor is Dr. Habib Ur Rehman. Soft copy is available (Thesis, Completion Certificate, Approval Signatures, and AUS Archives Consent Form).College of EngineeringDepartment of Electrical EngineeringMaster of Science in Electrical Engineering (MSEE
Emerging Technologies Adoption in Airports
No full textA Master of Science thesis in Engineering Systems Management by Hassan Abdalla AlNoman entitled, “Emerging Technologies Adoption in Airports”, submitted in April 2025. Thesis advisor is Dr. Noha Mohamed Hassan Hussein and thesis co-advisor is Dr. Zied Bahroun. Soft copy is available (Thesis, Completion Certificate, Approval Signatures, and AUS Archives Consent Form).Emerging technologies such as IoT, AI, and ML are reshaping industries by enhancing efficiency, accuracy, and automation, yet their full potential remains underexplored in airport operations. This research systematically analyzes the adoption and integration of these technologies while focusing on the role of Autonomous Guided Vehicles (AGVs) in optimizing passenger movement. A systematic literature review and bibliometric analysis established the current state of technology integration in airports and identified gaps in airport systems. Qualitative and quantitative insights were gathered through expert interviews, surveys, and existing airport data. Process Simulation provided a comparative evaluation of current practices versus a proposed AGV-integrated system using key performance metrics such as passenger waiting times. A financial feasibility assessment including benefit-cost analysis and Return on Investment evaluations examined the economic viability of retrofitting AGVs with IoT enhancements in established airport infrastructures. The findings indicate that AGVs can significantly improve operational efficiency by reducing manual labor, accelerating turnaround times, and enhancing passenger satisfaction; however, challenges remain in meeting demanding regulatory, cybersecurity, and stakeholder acceptance requirements. The research also discusses potential strategies for overcoming implementation challenges and highlights the importance of collaboration between technology providers, airport management, and regulatory bodies. By highlighting the gaps in current technology integration and outlining the advantages and feasibility of AGVs, the proposed design aims to enhance operational efficiency, improve passenger experience, and reduce reliance on manual labor in airport settings, paving the way for a more technologically advanced and efficient future in airport operations.College of EngineeringDepartment of Industrial EngineeringMaster of Science in Engineering Systems Management (MSESM
Utilization of Augmented Reality on Engineering Education
No full textA Master of Science thesis in Engineering Systems Management by Nasija Suhail entitled, “Utilization of Augmented Reality on Engineering Education”, submitted in May 2025. Thesis advisor is Dr. Vian Shawket Ahmed and thesis co-advisor is Dr. Zied Bahroun. Soft copy is available (Thesis, Completion Certificate, Approval Signatures, and AUS Archives Consent Form).College of EngineeringDepartment of Industrial EngineeringMaster of Science in Engineering Systems Management (MSESM
On the Commutants of Toeplitz Operators on the Harmonic Bergman Space
No full textA Master of Science thesis in Mathematics by Hasan Iqtaish entitled, “On the Commutants of Toeplitz Operators on the Harmonic Bergman Space”, submitted in May 2025. Thesis advisor is Dr. Abdel Rahman Yousef and thesis co-advisor is Dr. Issam Louhichi. Soft copy is available (Thesis, Completion Certificate, Approval Signatures, and AUS Archives Consent Form).A key issue in the theory of Toeplitz operators is the commutant problem, which concerns describing the collection of all bounded Toeplitz operators that commute with a given one. In this thesis, we deal with Toeplitz operators acting on the harmonic Bergman space of the unit disk in the complex plane. Specifically, we characterize the commutants Tƒ of the Toeplitz operator Tz+g, where g is an analytic function and where ƒ possesses a Fourier series truncated above, meaning that ƒ takes the form
ƒ(re ͥᶿ) = ∑_(k=-∞)^N▒〖e ͥᵏᶿfk(r).
Our main result states that such commutants Tf must be polynomials in Tz+g of degree at most one.College of Arts and SciencesDepartment of Mathematics and StatisticsMaster of Science in Mathematics (MSMTH