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Antennas and Propagation & USNC/URSI National Radio Science Meeting

作者： Tong Xu Shu Lin LiBo Wang Xingqi Zhang Xinyue Zhang School of Electronics and Information Engineering Harbin Institute of Technology Harbin China Department of Electrical and Computer Engineering University of Alberta Edmonton Canada Department of Electronic Engineering Maynooth University Ireland

ISBN: (数字)9798350369908

ISBN: (纸本)9798350369915

The advancement of the latest WiFi standard has spurred the development of a novel antenna design. A novel antenna design with broadband, low side-lobe, and high-gain omnidirectional radiation is proposed in this paper to achieve high-speed WiFi signal transmission. This design involves an innovative modification of the ground plane in a rectangular microstrip patch antenna, effectively achieving ultra-wideband, low side-lobe, and omnidirectional radiation characteristics. A 1 × 4 series-fed array, composed of antenna units with these attributes, is utilized to attain the antenna's high-gain feature. Simulation results using CST Microwave Studio® demonstrate that the designed antenna array can achieve a reflection coefficient of less than -10 dB in the range of 3.5 GHz to 10.4 GHz, and the side-lobe levels are consistently below -10 dB in the range of 3.8 GHz to 6.2 GHz, with gains exceeding 6 dBi. The electric field distribution analysis of the patch units substantiates the antenna's omnidirectional radiation capability. The designed antenna possesses advantages such as compact size, light weight, and ease of implementation, making it suitable for WiFi 7 applications and other similar areas.

关键词： Simulation Transmitting antennas Ultra wideband antennas Microwave antenna arrays Impedance Electric fields Antennas

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CdS/Ti-Si-O Composite Photoanode for Photoelectrochemical Hydrogen Generation

CdS/Ti-Si-O Composite Photoanode for Photoelectrochemical Hy...

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10th Symposium on Dielectrics for Nanosystems: Materials Science, Processing, Reliability, and Manufacturing, held at the 245th ECS Meeting

作者： Feng, Weilong Ding, Dongyan Chen, Zhi SJTU-Zhongmu Joint Research Center for Materials and Technology of Intelligent and Connected Vehicles Institute of Electronic Materials and Technology School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai200240 China Department of Electrical & Computer Engineering Center for Nanoscale Science & Engineering University of Kentucky LexingtonKY40506 United States

ISBN: (纸本)9781623326784

Advancements in clean energy drive socio-economic development and foster a sustainable future by restructuring energy systems and promoting low-carbon development. In this paper, we presented a comprehensive investigation on the design and performance characterization of CdS/Ti-Si-O composite photoanodes for photoelectrochemical (PEC) hydrogen generation. Silicon-doped TiO2 nanotube arrays were fabricated through anodization of Ti-5Si alloy, followed by the deposition of CdS using the SILAR (successive ionic layer adsorption and reaction) process, resulting in nanostructured Ti-Si-O photoanodes modified with CdS. The composite photoanodes were characterized in terms of their composition, microstructure, optical properties and photoelectrochemical hydrogen production performance. The composite photoanodes revealed a notable enhancement in PEC hydrogen generation properties with a photocurrent density of 7.86 mA/cm2,which was 19.15 times and 9.59 times to those of the undoped TiO2 photoanode and Ti-Si-O photoanode, respectively. The Si-doping mechanism of the photoanodes was elucidated through Density Functional Theory (DFT) calculations. The synergistic combination of Si-doping and CdS modification represents a novel and promising approach for the design of efficient nanostructured photoanodes. © The Electrochemical Society.

关键词： Cadmium sulfide

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Continuous Wavelet Transform Spectral Image Based Epileptic Episode Classification

Continuous Wavelet Transform Spectral Image Based Epileptic ...

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Information Technology (ACIT)

作者： Md. Nuhi-Alamin Ajay Krishno Sarkar Md. Simul Hasan Talukder Mohammad Aljaidi Safkat Shahrier Swapnil Department of Electrical and Electronic Engineering Rajshahi University of Engineering & Technology Rajshahi Bangladesh Department of Electrical and Electronic Engineering Dhaka University of Engineering & Technology Gazipur Bangladesh Department of Computer Science Faculty of Information Technology Zarqa University Zarqa Jordan College of Engineering University of Business and Technology Jeddah Saudi Arabia

ISBN: (数字)9798331540012

ISBN: (纸本)9798331540029

Numerous individuals globally, regardless of age, have the neurological condition epilepsy. Recurrent seizures compromised motor and sensory abilities, and a hindered normal lifestyle are all signs of epilepsy. By seeing or manually examining electroencephalogram (EEG) data, neurologists can make the diagnosis of epileptic seizures. In this paper, a continuous wavelet transform spectral image-based epileptic episode classification technique is proposed. The EEG signal was first converted into 227x227 RGB images using CWT. Then these images were used to create an image dataset, and classification was performed using the proposed deep ensemble epileptic seizure classifier (DE_ESC). DE_ESC ensembled Dense_net_169, Dense_net_201, and Inception_V3. This proposed method obtained 100% accuracy (Ac), precision (Pr), recall, and F1 Score, respectively.

关键词： Continuous wavelet transforms Accuracy Epilepsy Brain modeling Motors Electroencephalography Sleep apnea Information technology Alzheimer's disease Spectral analysis

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Transient events during photic driving in single-trial EEG within the second harmonics

Transient events during photic driving in single-trial EEG w...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Hannes Oppermann Jens Haueisen Department of Computer Science and Automation Insititute of Biomedical Engineering and Informatics Technische Universität Ilmenau Ilmenau Germany

ISBN: (数字)9798350371499

ISBN: (纸本)9798350371505

Intermittent photic stimulation (IPS) is a commonly used activation method in clinical applications, e.g. epilepsy, but also used in research for investigating excitability states in the brain. Effects in the brain followed by IPS are also known as photic driving response. These effects are usually characterized using averaged data. Here, we used single-trial analysis to determine photic driving effects at the second harmonics of the stimulation *** rest and auditory-visual stimulation, 64-channel EEG data were recorded with eyes closed. The visual stimulation included eight stimulation frequencies within the alpha and beta bands. A complex Morlet wavelet was used for time-frequency (TF) analysis. Bursts within the TF representations were then detected and characterized by number, frequency, and power near the second *** observed bursts close to the second harmonic of each stimulation frequency. The number of these events increased during stimulation and the main frequencies were shifted towards the second harmonics. Similarly, the power increased at all but one *** new single-trial analysis during IPS could lead to a better understanding of the photic driving effects in the brain and, in particular, the generation mechanisms with regard to the occurrence of effects in the harmonics and sub-harmonics.

关键词： Visualization Time-frequency analysis Epilepsy Power system harmonics Harmonic analysis Wavelet analysis Electroencephalography IP networks Transient analysis engineering in medicine and biology

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An Integrated Approach for the Co-governance of Sustainable and Resilient Cities: A Focus on Green Infrastructures and Transport Mobility in Catania (Italy) 23rd

An Integrated Approach for the Co-governance of Sustainable ...

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23rd International Conference on Computational Science and Its Applications, ICCSA 2023

作者： Sturiale, Luisa Ignaccolo, Matteo Torrisi, Vincenza Scuderi, Alessandro Department of Civil Engineering and Architecture University of Catania Viale Andrea Doria 6 Catania95125 Italy Department of Electrical Electronic and Computer Engineering University of Catania Viale Andrea Doria 6 Catania95125 Italy University of Catania Viale Andrea Doria Catania95127 Italy

ISBN: (纸本)9783031371073

Among the Sustainable Development Goals in the UN Agenda 2030, Goals 11 "Sustainable Cities and Communities" aims to "make cities and human settlements inclusive, safe, resilient and sustainable". Among the different targets it aims to promote a participatory and integrated transport-land planning;to guarantee accessibility to green areas and safe and inclusive public spaces, especially to vulnerable users;to ensure access to safe and economic living spaces and transport systems. This work presents an integrated approach to consider the role of Green Infrastructures (GIs) and Transport Mobility (TM) as key components in the transition towards a model of sustainable and resilient cities. The analysis of these two components of the urban system, especially in cities with high rates of motorisation and traffic congestion, on the one hand, and with a non-widespread presence of green areas, on the other, becomes strategic for implementing actions aimed at making cities more sustainable. The analyzed case study focuses on Catania (Italy) at different territorial levels, considering both the urban area and the neighboring municipalities. The study consists of two steps: (i) first, an interview-based methodology has been implemented to analyze citizen’s perception of GIs to tackle climate change and the willingness to pay to sustain the maintenance of these infrastructures;(ii) on the other hand, an extended survey will be performed to evaluate the propensity of users towards innovative shared transport systems and also the willingness to pay for the service. The obtained results from the first round of interviews highlighted the citizens point of view linked to GIs and their interest in the co-management. Research findings will constitute a decision support for administration and stakeholder to guide public investments and achieve awareness among citizens in order to promote co-governance actions and develop climate adaptation strategies and improve the quality of life in

关键词： Climate change

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Test Access Control for an Embedded MAC Unit Based Core using IEEE Std 1687

Test Access Control for an Embedded MAC Unit Based Core usin...

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2021 International Conference on Power, Energy and Innovations, ICPEI 2021

作者： Grout, Ian University of Limerick Department of Electronic and Computer Engineering Limerick Ireland

ISBN: (纸本)9781665402163

Ahstract-A major move today in developing and deploying embedded electronic systems is to include trained machine learning (ML) models that can be used for predicting new data in order to include added value to the embedded system functionality. The ML model can be implemented in software or hardware, and would typically require a highly parallelized architecture in order to reduce computation times. The design effort to create a suitable implementation is non-trivial. However, an aspect of the overall system development and deployment requirements that can be overlooked is the testability of the design hardware. In this paper, the test access for a trained ML model implemented in hardware as a MAC unit, and realized within a field programmable gate array (FPGA), is presented. The IEEE Std 1687 to provide access to embedded instrumentation is utilized to support the test requirements. The ML trained model is considered as an embedded computation core connected to a host processor. © 2021 IEEE.

关键词： Access control

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A Large-scale Benchmark Dataset for Commuting Origin-destination Matrix Generation

arXiv

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arXiv 2024年

作者： Rong, Can Ding, Jingtao Liu, Yan Li, Yong Department of Electronic Engineering Tsinghua University China Computer Science Department University of Southern California United States

The commuting origin-destination (OD) matrix is a critical input for urban planning and transportation, providing crucial information about the population residing in one region and working in another within an interested area. Despite its importance, obtaining and updating the matrix is challenging due to high costs and privacy concerns. This has spurred research into generating commuting OD matrices for areas lacking historical data, utilizing readily available information via computational models. In this regard, existing research is primarily restricted to only a single or few large cities, preventing these models from being applied effectively in other areas with distinct characteristics, particularly in towns and rural areas where such data is urgently needed. To address this, we propose a large-scale dataset comprising commuting OD matrices for 3,233 diverse areas around the U.S. For each area, we provide the commuting OD matrix, combined with regional attributes including demographics and point-of-interests of each region in that area. We believe this comprehensive dataset will facilitate the development of more generalizable commuting OD matrix generation models, which can capture various patterns of distinct areas. Additionally, we use this dataset to benchmark a set of commuting OD generation models, including physical models, element-wise predictive models, and matrix-wise generative models. Surprisingly, we find a new paradigm, which considers the whole area combined with its commuting OD matrix as an attributed directed weighted graph and generates the weighted edges based on the node attributes, can achieve the optimal. This may inspire a new research direction from graph learning in this field. © 2024, CC BY.

关键词： Matrix algebra

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A Translation-Tolerant Place Recognition Method by Viewpoint Unification 27

A Translation-Tolerant Place Recognition Method by Viewpoint...

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27th IEEE International Conference on Intelligent Transportation Systems, ITSC 2024

作者： Zheng, Linwei Hu, Xiangcheng Ma, Fulong Zhao, Guoyang Qi, Weiqing Ma, Jun Liu, Ming The Hong Kong University of Science and Technology Department of Electronic and Computer Engineering Hong Kong Robotics and Autonomous Systems Thrust Guangzhou China The Hong Kong University of Science and Technology Division of Emerging Interdisciplinary Areas Hong Kong

ISBN: (纸本)9798331505929

Place recognition serves as a fundamental component in tasks like loop closure detection and relocalization for mobile robots. Polar coordinate representations, such as Scan Context, which align with the data structure of range sensors, have become the most common data structure for point cloud descriptors in place recognition. While polar representations demonstrate the rotation invariance, they remain susceptible to translation variations. In this study, we introduce a novel approach: shifting the viewpoint of the original point cloud to construct the unified Scan Context, thereby mitigating translation variance. Our key concept focuses on identifying a stable, unified viewpoint for a given place and then pre-translating the point cloud accordingly. This naturally results in a descriptor devoid of translation variance. Importantly, within a given place, the viewpoint unification process tends to relocate the viewpoint to a similar position, irrespective of the original sensor perspective. In other words, the unified Scan Context becomes more closely associated with the place's structural characteristics than the physical location of the sensor. We validate our method through a series of comprehensive experiments encompassing synthetic scenarios and real-world datasets, showcasing its robustness in effectively handling translation variations. © 2024 IEEE.

关键词： Data structures

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An Improved Hyperbolic Tangent Power Rate Sliding Mode Operating Islanded AC Smartgrid Based Master-Slave 3

An Improved Hyperbolic Tangent Power Rate Sliding Mode Opera...

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3rd International Conference on Distributed Sensing and Intelligent Systems, ICDSIS 2022

作者： Nasir, M. Bansal, R.C. Suleiman, M.S. Sinan, S. Departement of Electrical Engineering Univeristy of Sharjah Sharjah United Arab Emirates Department of Electrical Electronic and Computer Engineering University of Pretoria Pretoria South Africa Montréal Canada

ISBN: (纸本)9781839538186

This paper presents an amalgamation between power rate sliding mode (PRSMC) and hyperbolic tangent (Tanh) sliding mode control to enhance the active and reactive power sharing between two parallel inverters in AC microgrid-based master-slave topology. The proposed control scheme comprises the outer control loop (master unit) that is based on a Proportional Integral (PI) controller and the inner control loop (slave unit) that is based on the proposed (PRTanh) sliding mode controller. Moreover, the suggested method works toward tackling the stability and robustness issues in the conventional sliding mode control. The microgrid under study comprises two parallel 3-level diode clamped inverters operated in islanded mode and connected to a common load through the Point of Common Coupling (PCC). Simulation results are carried out utilizing MATLAB/Simulink, where the suggested controller is compared to other controllers to prove its reliability, robustness, and effectiveness. © IET Conference Proceedings 2022.

关键词： Sliding mode control

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Considering the Design and Operation of a Voice Controlled Laboratory for Teaching and Learning in electronic engineering 9

Considering the Design and Operation of a Voice Controlled L...

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9th International Electrical engineering Congress, iEECON 2021

作者： Grout, Ian University of Limerick Department of Electronic and Computer Engineering Limerick Ireland

ISBN: (纸本)9781728195841

In this paper, the design and operation of a voice controlled electronic engineering laboratory for the teaching and learning of semiconductor device current-voltage (IV) characteristics are presented. This is targeted to students studying electronic engineering in a higher education setting. The presented case study experiment operation, based on a Schottky diode forward and reverse bias IV characteristics, is presented. This uses a computer-based interface to an Arduino UNO platform that acts as the experiment test and measurement equipment. The computer side software developed is based on a Python script along with a speech recognition library and the online Google Speech Recognition service for identifying voice commands. © 2021 IEEE.

关键词： Schottky barrier diodes

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