• Design and evaluation of a wearable bioimpedance system for monitoring multiple localized knee tissue sites 

  Critcher, Shelby (University of Alabama Libraries, 2020)

  Wearable technologies are becoming increasingly popular throughout society due to their capabilities and unobtrusiveness. The aim of personalized data collection narrows the category of wearable sensor systems to specifically ...
• Study of thermoelectric generators and perovskite solar cells for renewable energy applications 

  Ouyang, Zhongliang (University of Alabama Libraries, 2020)

  This dissertation aims at explorations of two promising renewable energy devices: one is thermoelectric generators (TEGs) and the other is perovskite solar cells (PVSCs). The first half of this dissertation (Chapter 2 & ...
• Design of spiral antenna array and communication system for X-band CubeSat in lunar orbit 

  Isbell, Katelyn (University of Alabama Libraries, 2020)

  Recent advancements in the design of CubeSats, a type of nanosatellite, have allowed missions to include lunar, asteroid, and planetary destinations. Communication for deep space CubeSats poses new challenges for researchers ...
• Machine learning enhanced 5G vehicle-to-everything (V2X) communication networks with millimeter-waves and terahertz links 

  Rasheed, Iftikhar (University of Alabama Libraries, 2020)

  With the incoming of 5G communications, Vehicular Networks have the hope to achieve ultra-high data transmission rate with extremely low end-to-end delay. However, the dynamic nature of transportation traffic and increased ...
• Comprehensive analysis of filter inductor asymmetry on conducted emissions in buck and boost converters 

  Helton, Jared (University of Alabama Libraries, 2020)

  Increased edge rates and switching frequencies have led to higher efficiency and increased power density for dc-dc converter topologies utilizing wide band-gap (WBP) devices. These improvements in intended behavior come ...
• Wireless directional network: a security perspective 

  Lu, Yu (University of Alabama Libraries, 2019)

  The rapid growth of big data applications over wireless network such as wireless sensor networks and unman aerial vehicle (UAV) lead to higher requirements for network capacity. One of the advanced solutions is adopting ...
• Comparison of methods for modeling OCXO frequency aging behavior 

  Griffin, Samuel James (University of Alabama Libraries, 2019)

  Frequency aging is an important factor in frequency standards. Aging is the portion of frequency drift that is intrinsic to the frequency standard. Improving the knowledge surrounding the mechanisms of aging provides means ...
• On the estimation of switching loss in wide band-gap power electronics systems 

  New, Christopher David (University of Alabama Libraries, 2019)

  Switching losses are a central factor in determining the overall performance of modern power electronics applications. It is crucial to accurately and efficiently estimate these losses since they affect system efficiency ...
• Additive increase-multiplicative decrease control of charging rate to enable mass EV-grid integration 

  Ucer, Emin Yilmaz (University of Alabama Libraries, 2019)

  Electric vehicles (EVs) are finally making their way onto the highways worldwide but the challenges with respect to their long charging time and its impact on the utility distribution grid are still waiting to be resolved. ...
• Design and integration of an UHF radar system for polar ice sounding 

  Nunn, Joshua (University of Alabama Libraries, 2019)

  Recent success with an ultra-high frequency airborne radar system designed for measuring near surface annual accumulation layers has inspired the design and development of a ground based, high-power, ultra-high frequency, ...
• Switching studies of perpendicular magnetic anisotropy materials and magnetic tunnel junctions 

  Abugri, Joseph Bukari (University of Alabama Libraries, 2019)

  The development of new materials for spintronic applications, such as STT-MRAM, continues to expand at a rapid rate, attracting a great deal of research interest. Our group has tried to simplify the design of the perpendicular ...
• Deep-learning-based transport layer control for big data transmission over UAV swarming networks 

  Mao, Qian (University of Alabama Libraries, 2019)

  Multi-Beam Smart Antennas (MBSAs) achieve concurrent communications in multiple beams, thereby providing higher throughput compared to regular directional antennas. Most of the transport layer control schemes used in ...
• Approximate dynamic programming and artificial neural network control of electric vehicles: from motor drives to grid integration 

  Sun, Yang (University of Alabama Libraries, 2019)

  The drive system of an electric vehicle (EV) includes two major parts- the powertrain and charging system. This dissertation investigates the implementation of the approximate dynamics programming (ADP) based artificial ...
• Wearable sensor systems to study the physiological and behavioral manifestation of cigarette smoking in free-living 

  Imtiaz, Masudul (University of Alabama Libraries, 2019)

  Worldwide, cigarette smoking is one of the major causes of preventable death. A single cigarette contains more than a hundred toxins that have detrimental effects on the smoker himself and the people in his or her surroundings. ...
• Architectures and control for energy storage systems with wired and wireless power transfer 

  Cao, Yuan (University of Alabama Libraries, 2019)

  In the past two decades, the performance of battery energy storage systems (BESS) has been significantly improved with the utilization of advanced architectures and control methods and new electronic devices. However, the ...
• On the accuracy of impedance measurements and the influence of fixturing 

  DeBoi, Brian Taylor (University of Alabama Libraries, 2019)

  Making accurate impedance measurements is a necessity when developing models for modern power electronics systems. Creating models of power electronic circuits involving wide bandgap devices requires characterizing the ...
• An analysis of parasitic capacitances in ioimpedance spectroscopy and their impact on impedance measurements 

  Mathews, Robert Joseph (University of Alabama Libraries, 2019)

  Electrical Impedance Spectroscopy techniques have long been used to investigate the frequency dependent electrical properties of biological tissues. Typically termed BioImpedance Spectroscopy, or BIS, these measurements ...
• Electronic transport in two-dimensional transition metal dichalcogenide MoS₂ under photoexcitation 

  Nguyen, Phuong Xuan (University of Alabama Libraries, 2019)

  We investigate the formation and transport behaviors of photo-excited carriers in two dimensional transition metal dichalcogenide MoS2 under intense polarized continuous-wave excitation. By opto-electrical measurement and ...
• Evaluation of Pb0.95La0.05Zr0.54Ti0.46O3 thin film based capacitors for photovoltaic applications: using top electrodes of varying work function 

  Batra, Vaishali (University of Alabama Libraries, 2018)

  Ferroelectricity and optical transparency are the two properties of lanthanum doped lead zirconate titanate (PLZT) that are utilized to explore its use for photovoltaic (PV) applications. A ferroelectric material sandwiched ...
• A wearable sensor system for automatic food intake detection and energy intake estimation in humans 

  Doulah, Abul Barkat Mollah Sayeed Ud (University of Alabama Libraries, 2018)

  Accurate measurement and estimation of energy intake (EI) are important for the understanding of energy balance and body weight dynamics. Food is the primary source of energy in the body. Therefore, the objective monitoring ...

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