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International Conference on Emerging Electronics (ICEE)

作者： Saravanan Yuvaraja Vishal Khandelwal Shibin Krishna Yi Lu Zhiyuan Liu Mritunjay Kumar Dhanu Chettri Xiao Tang Glen Issac Maciel Garcia Che-Hao Liao Xiaohang Li Advanced Semiconductor Laboratory Electrical and Computer Engineering Program CEMSE division King Abdullah University of Science and Technology (KAUST) Thuwa Saudi Arabia

In this paper we demonstrated the UWBG Ga 2 O 3 trigate transistors heterogeneously integrated on silicon substrate. This trigate transistor operates in depletion mode having decent Ion/Ioff ratio (10 5 ) and high transconductance (1 μS). Followed by the mobility is around 1.2 cm 2 /V. s. This work suggests that the ultrawide bandgap oxide transistors can be fabricated on various heterogenous substrates to achieve highly integrated, low cost, and robust electronics.

关键词： Performance evaluation Costs Photonic band gap Silicon Transistors Substrates Transconductance

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Minimizing File Transfer Time in Opportunistic Spectrum Access Model

arXiv

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arXiv 2022年

作者： Hu, Jie Doshi, Vishwaraj Eun, Do Young Department of Electrical and Computer Engineering United States Operations Research Graduate Program North Carolina State University RaleighNC United States

We study the file transfer problem in opportunistic spectrum access (OSA) model, which has been widely studied in throughput-oriented applications for max-throughput strategies and in delay-related works that commonly assume identical channel rates and fixed file sizes. Our work explicitly considers minimizing the file transfer time for a given file in a set of heterogeneous-rate Bernoulli channels, showing that max-throughput policy doesn’t minimize file transfer time in general. We formulate a mathematical framework for static extend to dynamic policies by mapping our file transfer problem to a stochastic shortest path problem. We analyze the performance of our proposed static and dynamic optimal policies over the max-throughput policy. We propose a mixed-integer programming formulation as an efficient alternative way to obtain the dynamic optimal policy and show a huge reduction in computation time. Then, we propose a heuristic policy that takes into account the performance-complexity tradeoff and consider the online implementation with unknown channel parameters. Furthermore, we present numerical simulations to support our analytical results and discuss the effect of switching delay on different policies. Finally, we extend the file transfer problem to Markovian channels and demonstrate the impact of the correlation of each channel. Copyright © 2022, The Authors. All rights reserved.

关键词： Stochastic systems

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Investigation of availability,demand,targets,and development of renewable energy in 2017-2050:a case study in Indonesia

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International Journal of Coal Science & Technology 2021年第4期8卷 483-499页

作者： Erdiwansyah Erdiwansyah Mahidin Mahidin Husni Husin Nasaruddin Nasaruddin Khairil Khairil Muhammad Zaki Jalaluddin Jalaluddin Doctoral Program School of EngineeringUniversitas Syiah KualaBanda Aceh 23111Indonesia Department of Chemical Engineering Universitas Syiah KualaBanda Aceh 23111Indonesia Department of Electrical and Computer Engineering Syiah Kuala UniversityBanda Aceh 23111Indonesia Department of Mechanical Engineering Universitas Syiah KualaBanda Aceh 23111Indonesia Department of Accounting Universitas Syiah KualaBanda Aceh 23111Indonesia Faculty of Engineering Universitas Serambi MekkahBanda Aceh 23245Indonesia

Abundant potential of renewable energy(RE)in Indonesia is predicted to replace conventional energy which continues to experience depletion year by ***,until now,the use of RE has only reached 2%of the existing potential of 441.7 *** main overview of this work is to investigate the availability of RE that can be utilized for electricity generation in *** energy demand and targets in the long run during the 2017-2050 period are also ***,government policies in supporting RE development are considered in this *** results show that the potential of RE in Indonesia can be utilized and might replace conventional energy for *** use of RE for electricity generation can be achieved by employing a government policy that supports the investor as the executor of RE *** selling price of electricity generated from RE is cheaper than electricity generated from fossils;this makes economy is more affordable for ***,the target set by the government for utilizing RE as the main energy in Indonesia can be done by implementing several policies for the RE ***,greenhouse gas emissions and the use of petroleum fuels can be reduced.

关键词： Energy potential Energy demand Energy development Economic growth Energy policy Energy targets

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Nonlinear Twistronics for EM Waves

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IEEE Transactions on Antennas and Propagation 2025年

作者： Valagiannopoulos, Constantinos Alu, Andrea National Technical University of Athens School of Electrical and Computer Engineering Athens15780 Greece City University of New York Photonics Initiative Advanced Science Research Center New YorkNY10031 United States City College of The City University of New York Department of Electrical Engineering New YorkNY10031 United States City University of New York Physics Program Graduate Center New YorkNY10016 United States

The electromagnetic (EM) interaction between two anisotropic nonlinear metasurfaces, under arbitrary rotations of their optical axes, is rigorously studied. Multistability conditions with respect to rotation angles between the two surfaces are determined and explored. The examined setup demonstrates opportunities for memory and storage since these in-plane rotations may act as continuous information carriers. The abrupt transitions of the system response, from one solution branch to the other, materialize the concept of twistronics engineering in the classical EM regime, sensitive to small angular changes. These findings can enhance the design of several photonic devices from ultra-sharp sensors and switches to analog information processors and optical memory elements. © 1963-2012 IEEE.

关键词： Optical bistability

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A data-stream TinyML compression algorithm for vehicular applications: a case study

A data-stream TinyML compression algorithm for vehicular app...

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Workshop on Metrology for Industry 4.0 and IoT

作者： Marianne Silva Gabriel Signoretti Thommas Flores Pedro Andrade Jordã o Silva Ivanovitch Silva Emiliano Sisinni Paolo Ferrari Postgraduate Program in Electrical and Computer Engineering (PPgEEC) Federal University of Rio Grande do Norte Natal Brazil University of Brescia Brescia Italy

The Internet of Things (IoT) has reduced the distance between one point and another and between people by connecting multiple devices to the web. However, the volume and speed of data creation and transmission have also increased. In this scenario, some challenges start to emerge, such as potentially irrelevant or redundant data transmission, that is, generating a more significant expenditure of energy and processing, in addition to the unnecessary use of the communication channel. Thus, to mitigate these, a solution for IoT devices would be data compression techniques. However, such devices available in the market today have severe limitations in terms of storage and processing power. Therefore, to overcome these limitations, the TinyML can be used to seek ways to implement machine learning models in low-power devices. In this context, this article aims to evaluate the impact of the compression algorithm (Tiny Anomaly Compress - TAC) on the performance of a microcontroller applied to the context of vehicles in a real scenario. As a result, it was found that even with the embedded algorithm, the microcontroller processing time is not affected in a meaningful way.

关键词： Performance evaluation Microcontrollers Data compression Communication channels Machine learning Real-time systems Internet of Things

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Design and exploration of vertically stacked complementary tunneling field-effect transistors

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Applied Physics Express 2024年第1期17卷 014001-014001页

作者： Thoti, Narasimhulu Li, Yiming Parallel and Scientific Computing Laboratory National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Electrical Engineering and Computer Science International Graduate Program National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Institute of Communications Engineering National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Institute of Biomedical Engineering National Yang Ming Chiao Tung University Hsinchu300093 Taiwan Department of Electronics and Electrical Engineering National Yang Ming Chiao Tung University Hsinchu300093 Taiwan

The purpose of this letter is to study the design and explore vertically stacked complementary tunneling field-effect transistors (CTFETs) using CFET technology for emerging technology nodes. As a prior work, the CTFET’s device-level simulations are implemented and deliberated in strict compliance with the experimental settings. This work comprises the study of physical and DC analyses by scaling the p- to n-CTFET separation (D pn), being a significant factor in CFET/CTFET design for its process difficulty. By utilizing the 50% benefit in footprint, the work is further extended to CTFET static random access memory implementation and characterization with hold/read noise margin analysis. © 2023 The Author(s). Published on behalf of The Japan Society of Applied Physics by IOP Publishing Ltd

关键词： Si-Ge alloys

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Data Acquisition for a Magnetic Levitation Vehicle

Data Acquisition for a Magnetic Levitation Vehicle

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IEEE Annual Southern Power Electronics Conference (SPEC)

作者： Gabriel Klajman Messer Elkin Ferney Rodriguez Velandia Richard Magdalena Stephan César Augusto Gonçalves Amado Program of Electrical Engineering (PEE) Federal University of Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Department of Electrical Engineering (DEE) Federal University of Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Department of Electronic and Computer Engineering (DEL) Federal University of Rio de Janeiro (UFRJ) Rio de Janeiro Brazil

The main objective of this paper is to discuss the data acquisition of the MagLev-Cobra magnetic levitation vehicle. The vehicle is located at the Technology Center of the Federal University of Rio de Janeiro. It was inaugurated in 2014 and is the first vehicle of its kind to use superconducting levitation in the world. As in other technological systems, it is extremely important to analyze the magnitudes related to its operation and efficiency. In this work, the main characteristics of the MagLev-Cobra are discussed, in addition to the analysis of experimental data of the magnitudes to be sensed.

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Sensing beyond the exceptional point for high detectivity

arXiv

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arXiv 2024年

作者： Li, Zhichao Prasad, Ciril S. Wang, Xielin Zhang, Ding Naik, Gururaj V. Department of Electrical and Computer Engineering Rice University HoustonTX77005 United States Applied Physics Program Rice University HoustonTX77005 United States Department of Physics and Astronomy Rice University HoustonTX77005 United States

Exceptional point (EP)-based optical sensors exhibit exceptional sensitivity but poor detectivity due to their acute sensitivity to perturbations such as noise. When the optical budget is limited as in applications on mobile platforms, high detectivity might be equally important as high sensitivity. In such scenarios, off-EP sensing is advantageous where a slight loss in sensitivity can lead to a significant gain in detectivity. Here, we show that a passive parity-time symmetric plasmonic-photonic hybrid shows a peak in its detectivity off EP where the sensitivity is still very high – surpassing the sensitivities of equivalent fully-plasmonic and fully-photonic systems. We demonstrate the high detectivity of off-EP sensing of anti-mouse IgG protein using this plasmonic-photonic hybrid system. We report a sensitivity of 1.2 nm/nM while requiring a minimum optical budget of 1.3 nJ. Thus, non-Hermitian plasmonic-photonic hybrids could be the best class of nanophotonic sensors for real-world applications. Copyright © 2024, The Authors. All rights reserved.

关键词： Budget control

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Rethinking Training for De-biasing Text-to-Image Generation: Unlocking the Potential of Stable Diffusion

arXiv

引用

arXiv 2024年

作者： Kim, Eunji Kim, Siwon Park, Minjun Entezari, Rahim Yoon, Sungroh Department of Electrical and Computer Engineering Seoul National University Korea Republic of Interdisciplinary Program in Artificial Intelligence Seoul National University Korea Republic of Stability AI United Kingdom AIIS ASRI INMC ISRC Seoul National University Korea Republic of

Recent advancements in text-to-image models, such as Stable Diffusion, show significant demographic biases. Existing debiasing techniques rely heavily on additional training, which imposes high computational costs and risks of compromising core image generation functionality. This hinders them from being widely adopted to real-world applications. In this paper, we explore Stable Diffusion’s overlooked potential to reduce bias without requiring additional training. Through our analysis, we uncover that initial noises associated with minority attributes form "minority regions" rather than scattered. We view these "minority regions" as opportunities in SD to reduce bias. To unlock the potential, we propose a novel de-biasing method called ‘weak guidance,’ carefully designed to guide a random noise to the minority regions without compromising semantic integrity. Through analysis and experiments on various versions of SD, we demonstrate that our proposed approach effectively reduces bias without additional training, achieving both efficiency and preservation of core image generation functionality. © 2024, CC BY-NC-SA.

关键词： Digital elevation model

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Visual Control and Mapping for UAV-Based Platform Inspection

Visual Control and Mapping for UAV-Based Platform Inspection

引用

International Conference on Unmanned Aircraft Systems (ICUAS)

作者： Leonardo A. Fagundes Carlos M. Soria Raquel F. Vassallo Alexandre S. Brandão Department of Electrical Engineering Graduate Program on Computer Science Federal University of Viçosa Viçosa MG Brazil Facultad de Ingeniería Instituto de Automática Universidad Nacional de San Juan Argentine Department of Electric Engineering Federal University of Espirito Santo Vitória ES Brazil

ISBN: (数字)9798331513283

ISBN: (纸本)9798331513290

Autonomous take-off and landing capabilities are crucial in UAV vision-based missions, ensuring adaptive navigation, especially in challenging environments where realtime identification and interaction with a variety of landing platforms are required. In this context, this paper presents a servo-visual controller that uses pattern detection and color segmentation techniques to identify take-off/landing platforms and estimate their current orientation. The proposed system was subjected to experimental validation with four platforms positioned in different orientations, heights, and positions, demonstrating its versatility in various conditions. Our study addresses the Flying Robots Trial League challenge, which emulates mapping and inspection tasks in offshore platforms.

关键词： Visualization Offshore installations Navigation Color Inspection Autonomous aerial vehicles Aircraft Drones Aerospace control

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