Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Engineering

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 3061 - 3090 of 196680

Full-Text Articles in Entire DC Network

Green Revolving Fund, Jordan Craft, Kate Mahoney, Brennan Wittler, Hui Min Mak, Logan Vowell Apr 2026

Green Revolving Fund, Jordan Craft, Kate Mahoney, Brennan Wittler, Hui Min Mak, Logan Vowell

25th Annual A. Paul and Carol C. Schaap Celebration of Undergraduate Research and Creative Activity (2026)

Caring for the Earth is an integral part of the Christian calling, encompassing various aspects, one of which is the stewardship of financial and natural resources. One way Hope College embodies this mission is through its buildings and operations. The Hope College Green Revolving Fund (GRF) is a financial mechanism to support sustainability initiatives on our campus. Through the GRF, student interns work alongside college staff and faculty mentors to understand the energy and cost impacts of college operations. The GRF then funds campus investments, which lead to sustainability impacts (such as reduced energy use, lower/less hazardous waste, and more). …

Go to article

Bio-Inspired Materials And Metamaterials For Tunable Biomimetic Properties In Diverse Engineering Applications, Sandeep Suresh Babu Apr 2026

Bio-Inspired Materials And Metamaterials For Tunable Biomimetic Properties In Diverse Engineering Applications, Sandeep Suresh Babu

Thesis/ Dissertation Defenses

Nature has always played the role of a design cue for several targeted engineering applications, with designers attempting to mimic the characteristics of natural organisms to have significant advantages in the engineering performance cycle. This dissertation explores the relationship between bioinspired design parameters and material compositions in diverse engineering applications, ranging from mechanical energy absorption to tissue engineering applications. A two-fold objective was followed in the study, where the initial focus was based on the structural design of metamaterial lattices based on geometrical cues observed in the horn structure of bighorn sheep and cuttlebone microstructure of cuttlefish. The advances made …

Go to article

Emergent Dynamics In Multiplex Social Networks: Agent-Based Modeling Of Information Diffusion For Misinformation Control, Harshvardhan Prabhakar Ghongade, Anjali Ashokrao Bhadre, Shivani Agarwal, Harjitkumar Uttamrao Pawar, Harshal Subhash Rane Apr 2026

Emergent Dynamics In Multiplex Social Networks: Agent-Based Modeling Of Information Diffusion For Misinformation Control, Harshvardhan Prabhakar Ghongade, Anjali Ashokrao Bhadre, Shivani Agarwal, Harjitkumar Uttamrao Pawar, Harshal Subhash Rane

Northeast Journal of Complex Systems (NEJCS)

Information misrepresentation is widespread in multi-layered social networks which provide multiple avenues to communicate information. As such, it presents significant opportunities for both information integrity and public discourse to be undermined by disinformation. This paper outlines a new agent-based model, developed to capture emergent dynamics of multi-layered social networks and to help identify technical means to mitigate information misrepresentation in complex systems. A key component of this research includes a novel Multi-Layer Information Diffusion Model (MLIDM), integrating both cross-layer communication among agents, as well as heterogeneous agent behaviors and adaptive intervention strategies. Our methods employ a three-stage process to model …

Go to article

Stack-Based Exploit Development Techniques In Mips Architectures, Justin Applegate Apr 2026

Stack-Based Exploit Development Techniques In Mips Architectures, Justin Applegate

Theses and Dissertations

Memory corruption vulnerabilities in binary executables represent a serious threat to software security, particularly in embedded and IoT (Internet of Things) devices that commonly use the MIPS architecture. While exploit development techniques for x86 are well-documented in academic literature, little systematic work exists on how those techniques translate to other architectures such as MIPS. This research addresses that gap by evaluating thirteen stack-based exploit development techniques and subtechniques, originally designed in the context of the x86 architecture, for their applicability to MIPS architectures. For each technique, vulnerable C code was written and compiled into both x86 and a set of …

Go to article

Developing Text-To-Video Ai Workflows Through Creative Practice, Nathan S. Jensen Apr 2026

Developing Text-To-Video Ai Workflows Through Creative Practice, Nathan S. Jensen

Staff Scholarship - Australia & Dubai

This creative practice project investigates the extent to which Gen-AI text-to-video tools can maintain coherence across a short multi-shot sequence rather than a single generated clip. This includes continuity in recurring characters, visual style, and simple narrative flow. Using a Creative Practice Scholarship framework and practice-based methodology, I developed Bush Friends, a proof-of-concept children’s television intro, as the artefact of experimentation. This  project combined concept development, storyboard planning, iterative prompting, AI video generation, and editorial assembly using ChatGPT (OpenAI, n.d.) for ideation and prompt development, Kling 3.0 Omni (KlingAI, n.d.) for video generation, and DaVinci Resolve 20 (Blackmagic Design, n.d.) …

Go to article

Development Of The Automated Verification And Validation System For The Improvement Of Operations Of Morehead State University's Dss-17, Austin S. Music Apr 2026

Development Of The Automated Verification And Validation System For The Improvement Of Operations Of Morehead State University's Dss-17, Austin S. Music

Morehead State Theses and Dissertations

A thesis presented to the faculty of the College of Science and Engineering Morehead State University in partial fulfillment of the requirements for the degree of Master of Science by Austin S. Music on April 16, 2026.

Go to article

Efficient Intrusion Detection For Iomt: Integrating Machine Learning, Feature Selection, And Fuzzy Logic, Ghaida Mansour Balhareth Apr 2026

Efficient Intrusion Detection For Iomt: Integrating Machine Learning, Feature Selection, And Fuzzy Logic, Ghaida Mansour Balhareth

Electronic Theses and Dissertations

The internet of medical things (IoMT) has transformed healthcare by enabling real-time patient monitoring, remote diagnoses, and effective data exchange among connected medical devices and clinical systems. The increasing reliance on interconnected medical equipment has also intensified cybersecurity risks, as resource-constrained devices and wireless communication channels are vulnerable to attacks such as man-in-the-middle, spoofing, data injection, and ransomware. Intrusion Detection Systems (IDSs) play a critical role in mitigating these threats; however, traditional IDS approaches often struggle with high-dimensional IoMT data, class imbalance, and uncertainty in traffic patterns, which can increase false alarms and reduce reliability in safety-critical environments. This dissertation …

Go to article

Conditioned Synthesis Of Spectra Using Matrix Decomposition For Spectral Library Augmentation, Anna Catherine Rollans Apr 2026

Conditioned Synthesis Of Spectra Using Matrix Decomposition For Spectral Library Augmentation, Anna Catherine Rollans

Theses and Dissertations

In hyperspectral imaging, identification and detection tasks are often done by comparing the spectrum of an unknown material to labeled spectra in a spectral library. However, it is intractable to populate a spectral library with measurements of all possible materials in all possible conditions. We propose modeling the weights resulting from matrix decomposition as functions of material condition(s) to generate synthetic spectra at unmeasured conditions to augment spectral libraries. Matrix decompositions considered here include principal component analysis (PCA), non-negative matrix factorization (NMF), and independent component analysis (ICA).We demonstrate this method by generating (1) synthetic long-wave infrared (LWIR) emissivity spectra of …

Go to article

Evaluation Of Polyester Polymer Concrete Overlays On Bridge Decks In Utah, Landon Moore Apr 2026

Evaluation Of Polyester Polymer Concrete Overlays On Bridge Decks In Utah, Landon Moore

Theses and Dissertations

The objective of this research was to evaluate the condition of polyester polymer concrete (PPC) overlays placed on both new and in-service concrete bridge decks in Utah. The procedures for this research included a desktop review of 80 bridges with PPC deck overlays; scanning of nine decks using rapid automated sounding and advanced deck imaging technologies to document delamination, cracking, spalling, and patching; and additional testing of two decks. This research involved evaluations of PPC overlays that were 2 to 8 years old and bridges that were 4 to 40 years old at the time of testing. The primary distresses …

Go to article

Implementing The Safe System Approach For Speed Management In Utah, Kezia Isabelle Tripp Apr 2026

Implementing The Safe System Approach For Speed Management In Utah, Kezia Isabelle Tripp

Theses and Dissertations

Speed management is central to reducing fatal and serious injury crashes. The Safe System Approach, an emerging roadway safety paradigm in the United States, recognizes human error and vulnerability and focuses on minimizing crash severity through coordinated policy, design, and operational strategies. This thesis examines how Safe System Approach principles can be applied to speed management, with a focus on identifying practical countermeasures and implementation strategies relevant to the Utah Department of Transportation (UDOT). A compendium of practice was conducted to evaluate speed management countermeasures and document how cities and state Departments of Transportation are implementing Safe System Approach-based strategies. …

Go to article

Acoustic Response Of The Cnt-Reinforced Multilayered Acoustic Foam Composites (Mafc), Trey Brauch Apr 2026

Acoustic Response Of The Cnt-Reinforced Multilayered Acoustic Foam Composites (Mafc), Trey Brauch

Electronic Theses and Dissertations

Acoustic metamaterials are engineered materials designed to control and manipulate sound propagation. Many such systems incorporate acoustic foams due to their porous structure, low density, and high specific surface area, which promotes efficient sound absorption. However, a major limitation of conventional acoustic foams -particularly open-cell varieties- is their lack of waterproofing, rendering them unsuitable for underwater or moisture-prone environments. To address this limitation, a multilayered acoustic foam composite (MAFC) was developed as a lightweight, waterproof structure with enhanced sound absorption performance. The MAFC consists of five layers: the first and fifth layers are aluminum foam, providing structural integrity; the second …

Go to article

Czts Nanoparticles As Cost Efficient Catalysts For Producing Green Hydrogen, Aidan Hau Apr 2026

Czts Nanoparticles As Cost Efficient Catalysts For Producing Green Hydrogen, Aidan Hau

Undergraduate Research Symposium (2026- )

Hydrogen gas is produced to be used as feedstock, fertilizer, and fuel. Traditional hydrogen production produces “gray hydrogen” in a process that uses and releases fossil fuels into the atmosphere. One way to produce “green” hydrogen is with renewable energy technologies that produce hydrogen gas using electrolysis without emitting fossil fuels. In electrolysis, the hydrogen atoms bonded to oxygen in a water molecule are split to produce hydrogen. A typical catalyst for this process would be a precious metal like palladium, which can be costly. In order to make green hydrogen production more affordable, an alternative catalyst composed of CZTS …

Go to article

Image Processing Technique To Find The Burden Rock Velocity And Its Interdependency On Bench Blasting Parameters – A Case Study, Channabassamma N, Akhil Avchar, Sahas V Swamy, Vedala Rama Sastry, Hemant Agrawale Apr 2026

Image Processing Technique To Find The Burden Rock Velocity And Its Interdependency On Bench Blasting Parameters – A Case Study, Channabassamma N, Akhil Avchar, Sahas V Swamy, Vedala Rama Sastry, Hemant Agrawale

Journal of Sustainable Mining

In any rock engineering or excavation project, optimizing blast design is essential for controlling post-blast phenomena such as flyrock, burden throw, and burden rock velocity (BRV). This study investigates the dynamic response of BRV in bench blasting operations by employing a high-speed camera and ProAnalyst software to quantify rock displacement. The relationships between BRV and key blast parameters, number of holes (NH), explosive charge per hole (EPH), total explosive charge (TEC), stiffness ratio (K), and stemming ratio (STR), were analyzed to identify linear or non-linear trends. Non-linear trends, …

Go to article

Design And Modeling Of A Piezoelectric Bimorph Energy Harvester For Automotive Structural Vibrations, Ali Abu Shawish Apr 2026

Design And Modeling Of A Piezoelectric Bimorph Energy Harvester For Automotive Structural Vibrations, Ali Abu Shawish

Thesis/ Dissertation Defenses

The focus of this thesis is on the design and modelling piezoelectric bimorph energy harvesters for vehicular utilization, particularly on harvesting energy from local structural vibrations of automotive components. The vibrations resulted from road–tire interaction and drivetrain dynamics offer the potential for harnessing electrical energy for low power electronic systems when coupled with low damping resonance harvesting devices. The main purpose of this thesis is to evaluate the potential of a piezoelectric bimorph cantilever tuned to 100–300 Hz local automotive structural vibrations for electrical energy harvesting, and to analyze its actual performance under realistic excitation conditions. The harvester's dynamic response, …

Go to article

Modeling Flood-Induced Cascading Disruptions In The Indian Electronics Supply Chain Using Influence Network Analysis, Surendra Orupalli, Hiroki Sayama Apr 2026

Modeling Flood-Induced Cascading Disruptions In The Indian Electronics Supply Chain Using Influence Network Analysis, Surendra Orupalli, Hiroki Sayama

Northeast Journal of Complex Systems (NEJCS)

This study investigates flood induced disruptions in the Indian electronics supply chain using influence network analysis. Monsoon floods are recurring hazards that significantly impact economic activities, logistics, and industrial productivity. This study integrates district-level rainfall data (2020 to 2025) with supply chain network models to quantify cascading failures. The methodology applies rainfall thresholds (≥ 300 mm/month) to identify flood-prone districts and constructs a stochastic influence matrix representing inter-firm dependencies. Flood propagation dynamics are modeled iteratively with a propagation coefficient (α = 0.6) and convergence threshold (ε = 10⁻⁴). The resulting disruption profiles are mapped onto company-level revenues calibrated to India-specific …

Go to article

Toward Human-Like Robot Behavior In Co-Manipulation: Learning From Human Dyad Performance, Adam Kenneth Jackson Apr 2026

Toward Human-Like Robot Behavior In Co-Manipulation: Learning From Human Dyad Performance, Adam Kenneth Jackson

Theses and Dissertations

Co-manipulation requires two or more agents to coordinate through a shared object while exchanging information through motion and force. Although this capability is routine for humans, robotic systems still struggle to participate in such interaction naturally and effectively. This thesis addresses that gap by studying human co-manipulation behavior, developing methods to quantify performance, collecting a leader-follower dataset that isolates haptic communication, and training data-driven controllers from human demonstrations. First, cumulative and real-time metrics were developed to quantify human dyad performance. In particular, the behavioral modes "quickly" and "smoothly" were formulated as measurable performance objectives using completion time and squared jerk. …

Go to article

3d Printed Microfluidic Nonlinear Structures For Implementing Lab-On-A-Chip Integrated Logic Control, Marshall J. Rawlins Apr 2026

3d Printed Microfluidic Nonlinear Structures For Implementing Lab-On-A-Chip Integrated Logic Control, Marshall J. Rawlins

Theses and Dissertations

Microfluidic devices are individual chips that manipulate small quantities of fluid to perform, for example, biomedical assays. They provide a compact apparatus for conducting chemical processes while using only micro-liter quantities of potentially expensive chemical reagents. Continued research in microfluidics has brought significant achievements in reducing microfluidic feature sizes, allowing for microfluidic systems to be more densely packed and designed for more complex chemical assays. However, this comes with the need for additional control inputs which require additional external equipment to generate the control inputs. This leads to crowding of external inputs, or an increase in chip volume to accommodate …

Go to article

Physics-Based And Data-Driven Low-Order Modeling Of Centrifugal Compressors, Chase Oliphant Apr 2026

Physics-Based And Data-Driven Low-Order Modeling Of Centrifugal Compressors, Chase Oliphant

Theses and Dissertations

Centrifugal compressors serve as critical components across many applications, yet their design and performance prediction present significant challenges. While computational fluid dynamics provides high-fidelity predictions of compressor behavior, its prohibitive computational cost renders it impractical for preliminary design phases where rapid exploration of the geometric and operating space is essential. Conversely, existing low-order models have enabled efficient performance estimation but suffer from limited accuracy and poor interpretability, particularly when applied to novel geometries or off-design operating conditions. This dissertation addresses these limitations through three complementary contributions that bridge the gap between high-fidelity CFD and preliminary design tools. The first contribution …

Go to article

Three Degree Of Freedom Wave Energy Converter Design For Resonant Motion, Greg Ballen, David G. Wilson, Rush Robinett, Shangyan Zou, Wayne Weaver Apr 2026

Three Degree Of Freedom Wave Energy Converter Design For Resonant Motion, Greg Ballen, David G. Wilson, Rush Robinett, Shangyan Zou, Wayne Weaver

Michigan Tech Publications

As multiple-degree-of-freedom (3-DOF) wave energy converters (WECs) have demonstrated the ability to produce more power than single-degree-of-freedom devices, the challenge of designing buoys for efficient energy harvesting has increased in complexity. In this paper, a cylindrical WEC is designed to naturally resonate in surge, pitch, and heave modes at a specific target frequency of 0.2 Hz. By utilizing a penalty-based optimization method to balance buoyancy requirements with natural resonance, the design achieves minimal control force input, thereby reducing fluctuations in energy output and local energy storage requirements. The performance is evaluated under irregular sea states using a Bretschneider spectrum. Results …

Go to article

Development Of An Experimental Platform For Hydrogen-Propelled Cold Spray, Michael James Katz Apr 2026

Development Of An Experimental Platform For Hydrogen-Propelled Cold Spray, Michael James Katz

Theses and Dissertations

Cold spray (CS) has gained recent interest as an additive manufacturing process. This process uses high pressure propellant gas to accelerate solid-state powder particles through a specialized nozzle, beyond which the powder deposits onto a substrate as a dense coating and without either material undergoing a phase change. Both nitrogen (N2) and helium (He) are commonly used as CS propellants, with He generally yielding superior results at otherwise similar processing conditions. However, performance advantages of He come with a significant drawback: He is a limited resource that may be sensitive to geopolitical conflicts and, in recent history, has been subject …

Go to article

Hypersonic Impact Method For Aerodynamics And Convective Heating (Hi-Mach) With Sensitivities, Jeremiah Goates, Logan Freeman, Nathan Hoch, Douglas Hunsaker Apr 2026

Hypersonic Impact Method For Aerodynamics And Convective Heating (Hi-Mach) With Sensitivities, Jeremiah Goates, Logan Freeman, Nathan Hoch, Douglas Hunsaker

Mechanical and Aerospace Engineering Student Publications and Presentations

The purpose of this paper is to present the development of an engineering level code for calculating hypersonic aerodynamics and convective heating, HI-Mach. Novel to this paper are the use of analytic methods for streamline tracing and the direct differentiation of geometric sensitivities for both forces and heat load. Independent panel inclination methods calculate the pressure distribution on the surface of a hypersonic vehicle. Normal shock relations provide the thermodynamic state on each panel. Streamlines are integrated using closed-form streamline equations. Flat plate formulas corrected for compressibility calculate the skin friction coefficient and acreage heat flux on each panel. Formulas …

Go to article

Harnessing Phase Engineered Porous Mxene-Tio2 In Polyamide Reverse Osmosis Membranes For Enhanced Short- And Long Chain Pfas Removal From Water, Roham Ghanbari, Javad Farahbakhsh, Ahmad Najafidoust, Ratish Permala, Stefan Iglauer, Shervin Kabiri, Masoumeh Zargar Apr 2026

Harnessing Phase Engineered Porous Mxene-Tio2 In Polyamide Reverse Osmosis Membranes For Enhanced Short- And Long Chain Pfas Removal From Water, Roham Ghanbari, Javad Farahbakhsh, Ahmad Najafidoust, Ratish Permala, Stefan Iglauer, Shervin Kabiri, Masoumeh Zargar

Research outputs 2022 to 2026

MXenes (2D transition metal nitrides, oxycarbides, carbonitrides, and carbides) hold promise in water treatment due to tunable surface chemistry and hydrophilic nature but restacking in aqueous environments and susceptibility to oxidation remain challenging. Here, we deliberately exploit partial oxidation of Ti3C2Tx MXene to in situ grow TiO2 nanoparticles on its surface, creating a porous, phase-engineered MXene-TiO2 composite. The anatase:rutile ratio was adjusted through different hydrothermal process time (12, 18, and 24 h), after 18 h composition yielding the best balance of surface charge and structural stability. This composite was incorporated into the polyamide (PA) layer of a thin-film composite reverse …

Go to article

Rioi: A Microwave-Photonic Rf-Interferometric Interrogation Technique For Enhanced Fiber Optic Sensing, Chen Zhu, Ruimin Jie, Chenxi Huang, Jie Huang Apr 2026

Rioi: A Microwave-Photonic Rf-Interferometric Interrogation Technique For Enhanced Fiber Optic Sensing, Chen Zhu, Ruimin Jie, Chenxi Huang, Jie Huang

Electrical and Computer Engineering Faculty Research & Creative Works

Fiber optic interferometric (FOI) sensors are widely recognized for their high sensitivity, design flexibility, and multiplexing capabilities, making them ideal for applications ranging from structural health monitoring to biomedical diagnostics. However, conventional optical-domain interrogation techniques are often limited by the performance constraints of spectrometers. In this work, we present a radiofrequency (RF)-interferometric optical interrogation (RIOI) method for FOI sensors. This approach leverages microwave photonic (MWP) processing to encode the optical interference phase into an RF signal, which is then combined with a reference RF signal to produce a microwave-domain interferogram. By tracking spectral shifts in the RF domain, RIOI achieves …

Go to article

Applied Research In Field Crop Pathology For Indiana, 2020, Darcy E. P. Telenko Apr 2026

Applied Research In Field Crop Pathology For Indiana, 2020, Darcy E. P. Telenko

Purdue University Press Books

Applied Research in Field Crop Pathology for Indiana, 2020 serves as a summary of the applied field crop pathology research trials conducted in 2020 under the direction of the Purdue Field Crop Pathology program in the Department of Botany and Plant Pathology at Purdue University. In Indiana, there are more than 57,600 farms, 16,000 crop producers, and 900 certified crop advisers, Extension educators, and crop-protection industry representatives who manage more than 11.4 million crop-production acres with a total value of $6.3 billion annually. There are more than twenty diseases affecting corn, soybeans, and wheat that may decrease crop production and …

Go to article

Space-Time Coded Pcm/Fm For Aeronautical Mobile Telemetry, Zachary B. Hilton Apr 2026

Space-Time Coded Pcm/Fm For Aeronautical Mobile Telemetry, Zachary B. Hilton

Theses and Dissertations

This thesis describes the application of a space-time block code for the legacy continuous phase modulation called "PCM/FM" in the IRIG 106 standard to solve the "two-antenna problem". This problem arises when two transmit antennas are used for full spatial coverage at the cost of self-interference caused by the different delays between the transmit antennas and the ground-based antenna. The space-time block encoder is described using bit-level operations on the input data stream. The space-time decoder uses coherent combining and maximum likelihood sequence estimation to produce an estimate of the data sequence. Simulation results for zero and various non-zero differential …

Go to article

Public Understanding Of Ai-Enabled Cyber Threats And Its Impact On Cybersecurity Governance In The United States, Charlotte M. Barbrick Apr 2026

Public Understanding Of Ai-Enabled Cyber Threats And Its Impact On Cybersecurity Governance In The United States, Charlotte M. Barbrick

LSU Master's Theses

Artificial intelligence is spreading quickly in workplaces and everyday life, and that fast growth is creating cybersecurity and privacy risks that current laws and organizational practices do not fully address. This thesis asks whether AI-specific knowledge shapes public support for cybersecurity governance of AI-enabled systems in the United States. Using nationally representative survey data from the Pew Research Center’s American Trends Panel (ATP) Wave 119, fielded December 12--18, 2022, I estimate weighted regression models to test how objective AI knowledge shapes support for cybersecurity governance. I also test whether concern about data misuse helps explain that relationship and whether AI …

Go to article

Effects Of Solvent Type, Storage Time, And Storage Temperature On Free Radical Stability And Concentration In Model Radical Systems And Complex Vegetable Oil Matrices, Rachid Ismail Daboussi Apr 2026

Effects Of Solvent Type, Storage Time, And Storage Temperature On Free Radical Stability And Concentration In Model Radical Systems And Complex Vegetable Oil Matrices, Rachid Ismail Daboussi

Thesis/ Dissertation Defenses

Free radicals are reactive species with unpaired electrons that occur and form within a range of biological, physical, and chemical systems. These highly reactive entities can interact with each other and/or with other molecules present in a mixture, often leading to significant changes in the system. Control over free radical concentration and free radical reactions is necessary in various fields depending on the aim of the process. For instance, free radical addition reactions play an essential role in the synthesis of polymers, where controlled radical behavior is necessary. However, in the thermal cracking of oil, free radical addition reactions are …

Go to article

Evaluation Of Remote Sensing Soil Moisture Datasets In Arid Regions And Their Prospect For Leak Detection In Water Distribution Systems, Alaa Shakfeh Apr 2026

Evaluation Of Remote Sensing Soil Moisture Datasets In Arid Regions And Their Prospect For Leak Detection In Water Distribution Systems, Alaa Shakfeh

Thesis/ Dissertation Defenses

This thesis is concerned with the evaluation of satellite-based soil moisture (SSM) datasets in arid regions and their potential application to leak detection in water distribution systems. The work focuses on the SMAP Level-4 soil moisture product and a Sentinel-1 SAR-based (SAR4SM) retrieval framework, used in conjunction with in-situ observations from the International Soil Moisture Network (ISMN) and historical leak records from the Al Ain Distribution Network (AADC), currently part of TAQA Distribution. The main objectives are (i) to quantify the performance of SMAP and SAR4SM surface soil moisture estimates over arid environments against ground-based measurements, and (ii) to develop …

Go to article

Performance Analysis Of Back-To-Back Multilevel Tnpc Converters For Wave Energy Converters, Kappala Raveendrababu Apr 2026

Performance Analysis Of Back-To-Back Multilevel Tnpc Converters For Wave Energy Converters, Kappala Raveendrababu

Thesis/ Dissertation Defenses

A Wave Energy Converter (WEC) is a device that transforms the kinetic energy of ocean waves into usable electrical energy. Wave energy has the potential to become a major renewable energy source soon, as its energy density is higher than that of solar and wind power, especially as its technology advances. This thesis addresses the integration of wave energy conversion systems into the electrical grid using back-to-back multilevel power converter topologies. The study focuses on the design and implementation of a back-to-back three-level T-type Neutral Point Clamped (T-NPC) converter for a single wave energy conversion system to enhance efficiency, reliability, …

Go to article

Utilization Of Commercial Phosphonium And Ammonium Ionic Liquids In Enhanced Oil Recovery Of Carbonate Reservoirs, Nada Berrandjia Apr 2026

Utilization Of Commercial Phosphonium And Ammonium Ionic Liquids In Enhanced Oil Recovery Of Carbonate Reservoirs, Nada Berrandjia

Thesis/ Dissertation Defenses

Despite advancements in renewable energy, oil and gas still dominate global energy supply, while a substantial portion of original oil in place (OOIP) remains unrecovered through conventional recovery methods. One of the most effective approaches used to mobilize residual oil is chemical enhanced oil recovery (CEOR) through mechanisms such as reduction of interfacial tension (IFT), alteration of wettability, emulsification, and improved displacement efficiency. Recently, ionic liquids (ILs) have gained interest as alternative CEOR agents due to their tunable structure and superior stability under harsh reservoir conditions. This thesis experimentally investigates the potential of low-cost and commercially available ILs for enhanced …

Go to article

First Prev Next Last