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

Electrical and Computer Engineering Commons

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

36,916 Full-Text Articles 52,041 Authors 18,390,391 Downloads 237 Institutions

All Articles in Electrical and Computer Engineering

Faceted Search

36,916 full-text articles. Page 5 of 1296.

2024 Electrochemical Research Paradigm Summer School Was Successfully Held, Editorial Office of J.Electrochem. 2024 Chinese Chemical Society | Xiamen University

2024 Electrochemical Research Paradigm Summer School Was Successfully Held, Editorial Office Of J.Electrochem.

Journal of Electrochemistry

No abstract provided.


2024 World Fuel Cell Conference Held In Ningbo, Zhejiang, Editorial Office of J.Electrochem. 2024 Chinese Chemical Society | Xiamen University

2024 World Fuel Cell Conference Held In Ningbo, Zhejiang, Editorial Office Of J.Electrochem.

Journal of Electrochemistry

No abstract provided.


Recent Advances On Ruthenium-Based Electrocatalysts For Lithium-Oxygen Batteries, Yu-Zhe Wang, Zhuo-Liang Jiang, Bo Wen, Yao-Hui Huang, Fu-Jun Li 2024 Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China

Recent Advances On Ruthenium-Based Electrocatalysts For Lithium-Oxygen Batteries, Yu-Zhe Wang, Zhuo-Liang Jiang, Bo Wen, Yao-Hui Huang, Fu-Jun Li

Journal of Electrochemistry

Rechargeable lithium-oxygen (Li-O2) batteries have attracted wide attention due to their high energy density. However, the sluggish cathode kinetics results in high overvoltage and poor cycling performance. Ruthenium (Ru)-based electrocatalysts have been demonstrated to be promising cathode catalysts to promote oxygen evolution reaction (OER). It facilitates decomposition of lithium peroxide (Li2O2) by adjusting Li2O2 morphologies, which is due to the strong interaction between Ru-based catalyst and superoxide anion (O2) intermediate. In this review, the design strategies of Ru-based electrocatalysts are introduced to enhance their OER catalytic kinetics in …


Numerical Analysis Of Explosion Characteristics Of Vent Gas From 18650 Lifepo4 Batteries With Different States Of Charge, Shi-Lin Wang, Xu Gong, Li-Na Liu, Yi-Tong Li, Chen-Yu Zhang, Le-Jun Xu, Xu-Ning Feng, Huai-Bin Wang 2024 China People’s Police University, Langfang 065000, China

Numerical Analysis Of Explosion Characteristics Of Vent Gas From 18650 Lifepo4 Batteries With Different States Of Charge, Shi-Lin Wang, Xu Gong, Li-Na Liu, Yi-Tong Li, Chen-Yu Zhang, Le-Jun Xu, Xu-Ning Feng, Huai-Bin Wang

Journal of Electrochemistry

The combustion and explosion characteristics of lithium-ion battery vent gas is a key factor in determining the fire hazard of lithium-ion batteries. Investigating the combustion and explosion hazards of lithium-ion batteries vent gas can provide guidance for rescue and protection in explosion accidents in energy storage stations and new energy vehicles, thereby promoting the application and development of lithium-ion batteries. Based on this understanding and combined with previous research on gas production from lithium-ion batteries, this article conducted a study on the combustion and explosion risks of vent gas from thermal runaway of 18650 LFP batteries with different states of …


Rate Law For Photoelectrochemical Water Splitting Over Cuo, Bo-Yuan Gao, Wen-Hua Leng 2024 Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang, 310058, China

Rate Law For Photoelectrochemical Water Splitting Over Cuo, Bo-Yuan Gao, Wen-Hua Leng

Journal of Electrochemistry

Photocatalytic splitting of water over p-type semiconductors is a promising strategy for production of hydrogen. However, the determination of rate law is rarely reported. To this purpose, copper oxide (CuO) is selected as a model photocathode in this study, and the photogenerated surface charge density, interfacial charge transfer rate constant and their relation to the water reduction rate (in terms of photocurrent) were investigated by a combination of (photo)electrochemical techniques. The results showed that the charge transfer rate constant is exponential-dependent on the surface charge density, and that the photocurrent equals to the product of the charge transfer rate constant …


Upcoming Meeting-The 1st Young Investigator Symposium On Electrosynthesis, Chinese Chemical Society, Editorial Office of J.Electrochem. 2024 Chinese Chemical Society | Xiamen University

Upcoming Meeting-The 1st Young Investigator Symposium On Electrosynthesis, Chinese Chemical Society, Editorial Office Of J.Electrochem.

Journal of Electrochemistry

No abstract provided.


Prostate Tissue Motion Tracking And Ultrasound Elastography Using Tissue Mechanics Derived Constraints, Tristan S. Curry 2024 Western University

Prostate Tissue Motion Tracking And Ultrasound Elastography Using Tissue Mechanics Derived Constraints, Tristan S. Curry

Electronic Thesis and Dissertation Repository

Current prostate cancer detection methods can be costly to obtain, such as magnetic resonance imaging, or lack specificity, such as a digital rectal exam. Ultrasound elastography, a method that can be used to develop and test algorithms that output stiffness, strain, and displacement data captured by ultrasound radio frequency readings, offers a potential solution to these challenges. An initial algorithm utilizing dynamic programming and analytic minimization estimates the radial and angular displacements from a pre- and post-compression data set to determine the required material properties. This estimate of displacements is then refined through an algorithm where incompressibility, Laplacian smoothing, and …


Towards The Development Of Wearable Tremor Suppression Systems Combining Functional Electrical Stimulation And Mechanical Actuation, Zahra Habibollahi 2024 Western University

Towards The Development Of Wearable Tremor Suppression Systems Combining Functional Electrical Stimulation And Mechanical Actuation, Zahra Habibollahi

Electronic Thesis and Dissertation Repository

Parkinson's disease (PD), the second most prevalent neurological disorder, is characterized by motor and non-motor symptoms including tremor. Wearable tremor suppression devices (WTSDs), have shown promising results for tremor reduction, using functional electrical stimulation (FES) or active actuators. However, results and study procedures are not consistent in the literature. Although stimulations below and above motor threshold can suppress tremor, the mechanisms of the first is still not clear, and the second might lead to muscle fatigue and discomfort over time. While active actuators have shown better results for tremor suppression, they are often heavy and bulky for daily use. Lastly, …


Modular Open-Source Photovoltaic-Powered Dc Nanogrid For Application-Specific Designs, Md Motakabbir Rahman 2024 Western University

Modular Open-Source Photovoltaic-Powered Dc Nanogrid For Application-Specific Designs, Md Motakabbir Rahman

Electronic Thesis and Dissertation Repository

Decreasing cost of green energy producing solar panels has significantly boosted their popularity. Despite this, the power electronics associated with PV systems remain closed-source, expensive, and not easily compatible or expandable. This limits accessibility, especially for low-power applications. This research addresses these issues by adopting and analyzing DC nanogrid technology, converting it into a modular, open-source hardware system that users can easily assemble and expand. Detailed small signal analysis of the DC nanogrid was conducted, followed by the design of controllers and an effective energy management system. The system's stability was also thoroughly analyzed. Subsequently, hardware was developed and tested …


A Configurable Real-Time Event Detection Framework For Power Systems Using Swarm Intelligence Optimization, Umar Farooq, Midrar Adham, Mohammed Alsaid, Robert B. Bass 2024 Portland State University

A Configurable Real-Time Event Detection Framework For Power Systems Using Swarm Intelligence Optimization, Umar Farooq, Midrar Adham, Mohammed Alsaid, Robert B. Bass

Electrical and Computer Engineering Faculty Publications and Presentations

Power system balancing authorities are routinely affected by sudden frequency fluctuations. These frequency events can take the form of negligible frequency deviations or more severe emergencies that can precipitate cascading outages, depending on the severity of the disturbance and efficacy of remedial action schema. It is imperative to arrest such disturbances quickly by activating primary frequency control measures. This manuscript proposes a configurable event detection framework using optimization methods to tune a detection algorithm to detect events as specified by experts from a Balancing Authority. The utility of the detection framework is demonstrated using a regression-based frequency event detection algorithm …


3d-Printable Open Source Hardware Developed For Sustainable Technology, Dawei Liu 2024 Western University

3d-Printable Open Source Hardware Developed For Sustainable Technology, Dawei Liu

Electronic Thesis and Dissertation Repository

As open-source technology and additive manufacturing evolve, their advantages become increasingly evident, offering solutions to global challenges. This thesis presents the development of two open-source 3D-printable hardware tools to accelerate this trend: a melt flow index (MFI) tool and tourniquet tester. The MFI tool is introduced as a low-cost method for measuring the MFI of thermal-sensitive material, particularly assessing their suitability for recycling thermoplastics for 3D printing. The tourniquet tester provides a low-cost instrument for measuring the pressure of tourniquets to assess efficacy. This device offers a cost-effective solution to ensure the safety and functionality of these critical emergency tools …


Extended Time, Elevated Expectations: The Unappreciated Downsides Of Pausing The Tenure Clock, Maria A. Holland, Katharina Maisel, Carolyn B. Ibberson, Laura K. Wiley, David C. Burnett, Emily M. Mace, Mary Williard Elting 2024 University of Notre Dame

Extended Time, Elevated Expectations: The Unappreciated Downsides Of Pausing The Tenure Clock, Maria A. Holland, Katharina Maisel, Carolyn B. Ibberson, Laura K. Wiley, David C. Burnett, Emily M. Mace, Mary Williard Elting

Electrical and Computer Engineering Faculty Publications and Presentations

In 1971, Stanford became the first university to introduce tenure clock extensions in academia for new mothers. The American Association of University Professors (AAUP) began recommending such policies a few years later, and in 2001, modified their recommendation to include primary or coequal caregivers, following either the birth or adoption of a child (1). By 2004, 43% of 255 surveyed institutions had formal clock-stop policies...


A Temperature Compensated Lateral Field Excited Lithium Tantalate Sensor Platform, Yuri Trusty 2024 University of Maine

A Temperature Compensated Lateral Field Excited Lithium Tantalate Sensor Platform, Yuri Trusty

Electronic Theses and Dissertations

The most common bulk acoustic wave (BAW) sensing platform is the AT-cut quartz crystal microbalance (QCM), which exhibits a pure transverse shear mode (TSM) that is temperature compensated near room temperature. Due to the inability of shear waves to propagate in liquids, a pure TSM is desirable for applications such as biosensing, where the target is typically detected from within a fluid. Resonant BAW modes that are thickness field excited (TFE) by electrodes on both major faces of the crystal substrate, prevent electrical property detection at the sensing surface. In contrast, lateral field excitation (LFE) only requires electrodes on a …


Investigation Of Magneto Hydrodynamic Drives For Blood Flow Assist Pumps, Faija Farjana 2024 University of Maine

Investigation Of Magneto Hydrodynamic Drives For Blood Flow Assist Pumps, Faija Farjana

Electronic Theses and Dissertations

This research explores a new blood pump for patients with single ventricle defects, who went through the Fontan procedure. The patients having Fontan graft lack the pressure created by systole in the human body, which pushes the oxygen-poor blood to the lungs to be oxygenated. The aim of this work is to lay the foundation for developing an electromagnetic device that can assist the blood flow from the heart to the lungs by replacing the existing mechanical right ventricular assist device with rotary parts that result in health hazards. The concept of magnetohydrodynamic pump, based on Lorentz force, is investigated …


Gan Hemt Quartz Crystal Oscillator Topologies For High Temperature Applications, Emily Currie 2024 University of Maine

Gan Hemt Quartz Crystal Oscillator Topologies For High Temperature Applications, Emily Currie

Electronic Theses and Dissertations

Oscillator circuits are at the heart of electronics required for communication, frequency control, and sensing. Crystal oscillators, in particular, present very attractive characteristics, such as their low power consumption and high frequency stability. These circuits employ acoustic waves devices as the frequency control element, often a bulk acoustic wave (BAW) resonator. There is an increasing need for communication and sensing circuitry capable of withstanding high temperatures (HT) and harsh environments (HE) in many industries, and a crystal oscillator capable of insertion in such environments and of continuous operation from room temperature to HT is a beneficial addition to many HT …


The Rise Of Bread: Leveraging Open-Source Process Control, Finn Keith Hafting 2024 Western University

The Rise Of Bread: Leveraging Open-Source Process Control, Finn Keith Hafting

Electronic Thesis and Dissertation Repository

Industrial pilot projects and the automation of experiments often rely on expensive and proprietary electronic hardware, known as supervisory control and data acquisition (SCADA) systems, to control and monitor areas of their processes. The Broadly Reconfigurable and Expandable Automation Device (BREAD) framework was created to address the need for inexpensive SCADA systems. New BREAD Slices were designed and compared to commercial heating, motor, pump, and pH controllers, exceeding all in functionality and cost. In each case, the decreased accuracy of the BREAD controller had little impact on the final products but greatly reduced the cost of the system. The modularity …


Cybersecurity, Image-Based Control, And Process Design And Instrumentation Selection, Dominic Messina, Akkarakaran Francis Leonard, Ryan Hightower, Kip Nieman, Renee O'Neill, Paloma Beacham, Katie Tyrrell, Muhammad Adnan, Helen E. Durand 2024 Department of Chemical Engineering and Materials Science, Wayne State University

Cybersecurity, Image-Based Control, And Process Design And Instrumentation Selection, Dominic Messina, Akkarakaran Francis Leonard, Ryan Hightower, Kip Nieman, Renee O'Neill, Paloma Beacham, Katie Tyrrell, Muhammad Adnan, Helen E. Durand

Chemical Engineering and Materials Science Faculty Research Publications

Within an Industry 4.0 framework, a variety of new considerations are of increasing importance, such as securing processes against cyberattacks on the control systems or utilizing advances in image processing for image-based control. These new technologies impact relationships between process design and control. In this work, we discuss some of these potential relationships, beginning with a discussion of side channel attacks and what they suggest about ways of evaluating plant design and instrumentation selection, along with controller and security schemes, particularly as more data is collected and there is a move toward an industrial Internet of Things. Next, we highlight …


Breaking The Causality Limit For Broadband Acoustic Absorption Using A Noncausal Active Absorber, Kangkang Wang, Sipei Zhao, Chen Shen, Haishan Zou, Jing Lu, Andrea Alu 2024 Rowan University

Breaking The Causality Limit For Broadband Acoustic Absorption Using A Noncausal Active Absorber, Kangkang Wang, Sipei Zhao, Chen Shen, Haishan Zou, Jing Lu, Andrea Alu

Henry M. Rowan College of Engineering Departmental Research

The principle of causality imposes a constraint between the thickness and bandwidth of absorbers. This trade-off applies to any linear, time-invariant, passive system, limiting the development of broadband-absorbing materials that demand a thin profile for sound, light, and radio waves. Here, we demonstrate a strategy to overcome this constraint in acoustics using a noncausal active absorber whose response is controlled over time. A theoretical framework is established, which sets a relation among minimum thickness, bandwidth, and a priori information about the incident signal, representing a relaxed physical bound for noncausal absorbers. We design an absorber based on this principle and …


Healthcare Assistance Challenges-Driven Neurosymbolic Ai, Kaushik Roy 2024 University of South Carolina

Healthcare Assistance Challenges-Driven Neurosymbolic Ai, Kaushik Roy

Publications

Although Artificial Intelligence technology has proven effective in providing healthcare assistance by analyzing health data, it still falls short in supporting decision-making. This deficiency largely stems from the predominance of opaque neural networks, particularly in mental health care AI applications, which raise concerns about their unpredictable and unverifiable nature. This skepticism hinders the transition from information support to decision support. This presentation will explore neurosymbolic approaches that combine neural networks with symbolic control and verification mechanisms. These approaches aim to unlock AI’s full potential by enhancing information analysis and decision-making support for healthcare assistance.


A Measure Of Interactive Complexity In Network Models, Will Deter 2024 Binghamton University

A Measure Of Interactive Complexity In Network Models, Will Deter

Northeast Journal of Complex Systems (NEJCS)

This work presents an innovative approach to understanding and measuring complexity in network models. We revisit several classic characterizations of complexity and propose a novel measure that represents complexity as an interactive process. This measure incorporates transfer entropy and Jensen-Shannon divergence to quantify both the information transfer within a system and the dynamism of its constituents’ state changes. To validate our measure, we apply it to several well-known simulation models implemented in Python, including: two models of residential segregation, Conway’s Game of Life, and the Susceptible-Infected-Susceptible (SIS) model. Our results reveal varied trajectories of complexity, demonstrating the efficacy and sensitivity …


Digital Commons powered by bepress