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2024 Laser Science, LS 2024

作者： Begović, Amir Zhang, Meng Crowley, Daniel McDonough, Colin Dikshit, Amit Huang, Zhaoran Rena Department of Electrical Computer and Systems Engineering Rensselaer Polytechnic Institute TroyNY12180 United States Research Foundation SUNY AlbanyNY12203 United States

We present and characterize various coupler designs developed in the AIM Photonics Foundry for efficient mode conversion from integrated lasers to on-chip waveguides, focusing on maximizing alignment tolerance. ©... 详细信息

关键词： Photonics

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Simultaneous Optimization of Multiple Hidden Fluorescent Targets with Wavefront Shaping

Simultaneous Optimization of Multiple Hidden Fluorescent Tar...

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2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Rumman, Nazifa Wang, Tianhong Bassene, Pascal N'Gom, Moussa Electrical Computer and Systems Engineering Department Rensselaer Polytechnic Institute TroyNY United States Department of Physics Applied Physics and Astronomy Rensselaer Polytechnic Institute TroyNY United States

We, for the first time, combine wavefront shaping together with thresholding based image segmentation and entropy of image to locate, optimize, and track signals from multiple targets hidden behind scattering media. &... 详细信息

ISBN: (纸本)9781957171258

关键词： Image segmentation

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Automatic Anomaly Monitoring in Public Surveillance Areas

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Intelligent Automation & Soft Computing 2023年第3期35卷 2655-2671页

作者： Mohammed Alarfaj Mahwish Pervaiz Yazeed Yasin Ghadi Tamara al Shloul Suliman A.Alsuhibany Ahmad Jalal Jeongmin Park Department of Electrical Engineering College of EngineeringKing Faisal UniversityAl-Ahsa31982Saudi Arabia Department of Computer Science Bahria UniversityIslamabadPakistan Department of Computer Science and Software Engineering Al Ain UniversityAl Ain15551UAE Department of Humanities and Social Science Al Ain UniversityAl Ain15551UAE Department of Computer Science College of ComputerQassim UniversityBuraydah51452Saudi Arabia Department of Computer Science Air UniversityIslamabadPakistan Department of Computer Engineering Korea Polytechnic University237 Sangidaehak-ro Siheung-siGyeonggi-do15073Korea

With the dramatic increase in video surveillance applications and public safety measures,the need for an accurate and effective system for abnormal/sus-picious activity classiﬁcation also *** it has multiple applications,the problem is very *** this paper,a novel approach for detecting nor-mal/abnormal activity has been *** used the Gaussian Mixture Model(GMM)and Kalmanﬁlter to detect and track the objects,*** that,we performed shadow removal to segment an object and its *** object segmentation we performed occlusion detection method to detect occlusion between multiple human silhouettes and we implemented a novel method for region shrinking to isolate occluded *** c-mean is utilized to verify human silhouettes and motion based features including velocity and opticalﬂow are extracted for each identiﬁed *** Wolf Optimizer(GWO)is used to optimize feature set followed by abnormal event classiﬁcation that is performed using the XG-Boost classiﬁ*** system is applicable in any surveillance appli-cation used for event detection or anomaly *** of proposed system is evaluated using University of Minnesota(UMN)dataset and UBI(Uni-versity of Beira Interior)-Fight dataset,each having different type of *** mean accuracy for the UMN and UBI-Fight datasets is 90.14%and 76.9%*** results are more accurate as compared to other existing methods.

关键词： Abnormal event classiﬁcation gray wolf optimizer region shrinking xg-boost classiﬁer

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Text-dependent Speaker Verification Challenge 2024: Exploring Shared and User-defined Passphrases

Text-dependent Speaker Verification Challenge 2024: Explorin...

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2025 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2025

作者： Zeinali, Hossein Lee, Kong Aik Alam, Jahangir Burget, Lukáš Department of Computer Engineering Amirkabir University of Technology Tehran Iran Department of Electrical and Electronic Engineering The Hong Kong Polytechnic University Kowloon Hong Kong Department of Computer Graphics and Multimedia Brno University of Technology Brno Czech Republic Computer Research Institute of Montreal Montreal Canada

ISBN: (纸本)9798350368741

In contrast to text-independent speaker verification, which has received significant attention from researchers and has many competitions dedicated to it, text-dependent speaker verification (TdSV) has been less explored recently. The TdSV Challenge 2024 was organized to analyze and explore novel methods for this type of speaker verification and aims to motivate participants to develop new approaches to TdSV, conduct comprehensive analyses, and investigate advanced techniques such as self-supervised learning. This challenge builds on the achievements of the short-duration speaker verification (SdSV) Challenges held in 2020 and 2021 and focuses specifically on TdSV in two distinct scenarios. The first scenario involves conventional TdSV, while the second focuses on speaker enrollment using user-defined passphrases. This paper provides a detailed description of both tasks, introduces the evaluation rules, and presents a comprehensive analysis of the results obtained from this challenge. © 2025 IEEE.

关键词： DeepMine dataset TdSV Challenge Text-dependent Speaker Verification User-defined passphrase

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Inverse designed nanophotonics in thin-film lithium niobate

Inverse designed nanophotonics in thin-film lithium niobate

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2023 Conference on Lasers and Electro-Optics, CLEO 2023

作者： Shang, Chengfei Yang, Jingwei Hammond, Alec M. Chen, Zhaoxi Chen, Mo Lin, Zin Johnson, Steven G. Wang, Cheng Department of Electrical Engineering City University of Hong Kong Kowloon Hong Kong School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta United States Department of Mathematics Massachusetts Institute of Technology Cambridge United States Department of Electrical and Computer Engineering Virginia Polytechnic Institute State University Arlington United States

We develop a 3D gradient-based inverse design model specially tailored for the LNOI platform, and experimentally demonstrate a spatial-mode multiplexer, a waveguide crossing and a compact waveguide bend with low loss ... 详细信息

ISBN: (纸本)9781957171258

关键词： Lithium

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Connection Between Damping Torque Analysis and Energy Flow Analysis in Damping Performance Evaluation for Electromechanical Oscillations in Power Systems

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Journal of Modern Power Systems and Clean Energy 2022年第1期10卷 19-28页

作者： Yong Hu Siqi Bu Xin Zhang Chi Yung Chung Hui Cai Department of Electrical Engineering and Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHong KongChina Shenzhen Research Institute The Hong Kong Polytechnic UniversityShenzhenChina Centre for Energy Systems and Strategy Cranfield UniversityCranfieldUK Department of Electrical and Computer Engineering University of SaskatchewanSaskatoonCanada State Grid Jiangsu Economic Research Institute NanjingChina

The damping performance evaluation for electromechanical oscillations in power systems is crucial for the stable operation of modern power *** this paper,the connection between two commonly-used damping performance evaluation methods,i.e.,the damping torque analysis(DTA)and energy flow analysis(EFA),are systematically examined and revealed for the better understanding of the oscillatory damping ***,a concept of the aggregated damping torque coefficient is proposed and derived based on DTA of multi-machine power systems,which can characterize the integration effect of the damping contribution from the whole power ***,the pre-processing of measurements at the terminal of a local generator is conducted for EFA,and a concept of the frequency-decomposed energy attenuation coefficient is defined to screen the damping contribution with respect to the interested *** this basis,the frequency spectrum analysis of the energy attenuation coefficient is employed to rigorously prove that the results of DTA and EFA are essentially equivalent,which is valid for arbitrary types of synchronous generator models in multi-machine power ***,the consistency between the aggregated damping torque coefficient and frequency-decomposed energy attenuation coefficient is further verified by the numerical calculation in case *** relationship between the proposed coefficients and the eigenvalue(or damping ratio)is finally revealed,which consolidates the application of the proposed concepts in the damping performance evaluation.

关键词： Electromechanical oscillation damping performance damping torque analysis(DTA) energy flow analysis(EFA) frequency spectrum

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A Comprehensive Analysis of Fetal Electrocardiogram Signals

A Comprehensive Analysis of Fetal Electrocardiogram Signals

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IEEE Middle East and North Africa Communications Conference (MENACOMM)

作者： Brandon Camacho Muhammad Sana Ullah Electrical and Computer Engineering Department Florida Polytechnic University Lakeland USA

ISBN: (数字)9798331519957

ISBN: (纸本)9798331519964

This paper reviews different feature extraction and analysis methods for FECG signals. The FECG signals are very critical in monitoring the health of the fetuses; hence, most of the time, they are masked by maternal ECG and noise and introducing significant challenges during the analysis of the same signal. In this paper, several feature-extraction techniques are reviewed and compared. Techniques included, but were not limited to, time-domain, frequency-domain, and time-frequency domain methods such as PCA and ICA. We also review some newer approaches for machine learning, including deep learning methods that could be applied further to enhance the performance of signal separation and classification performance. Then, each method is tested on synthetic and realworld datasets, emphasizing computational efficiency and clinical applicability. By elaborating on the strengths and weaknesses of each approach, this paper summarize the results that give insight into optimum strategies to improve FECG signal processing for better diagnosis regarding fetal health.

关键词： Time-frequency analysis Technological innovation Source separation Reviews Noise Feature extraction Computational efficiency Time-domain analysis Monitoring Principal component analysis

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End-to-end Nanophotonic Inverse Design for Computational Imaging

End-to-end Nanophotonic Inverse Design for Computational Ima...

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2023 International Applied Computational Electromagnetics Society Symposium, ACES-Monterey 2023

作者： Lin, Zin Virginia Polytechnic Institute and State University Electrical Engineering Arlington Research Cente Bradley Department of Electrical and Computer Engineering 900 N Glebe Road ArlingtonVA22203 United States

We introduce end-to-end inverse design in which a nanophotonics frontend is optimized in conjunction with a computational-imaging backend to minimize reconstruction errors. We present several nanophotonics designs for... 详细信息

ISBN: (纸本)9781733509633

关键词： Nanophotonics

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Joint Trajectory Optimization for Redundant Manipulators with Constant Path Speed

Joint Trajectory Optimization for Redundant Manipulators wit...

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American Control Conference (ACC)

作者： Jonathan Fried Santiago Paternain Department of Electrical Computer and Systems Engineering Rensselaer Polytechnic Institute

ISBN: (数字)9798350382655

ISBN: (纸本)9798350382662

In this work, we present an approach to minimizing the time necessary for the end-effector of a redundant robot manipulator to traverse a given trajectory by optimizing the trajectory of its joints, under a number of restrictions. Each joint has limits in the ranges of position, velocity and acceleration, the latter making jerks in joint space undesirable. Furthermore, for the applications involved, the end-effector must traverse the path with high accuracy and at constant path velocity, i.e. the tip of the manipulator must cover equal distances in equal amounts of time. The proposed approach takes this nonlinear optimization problem that has two variables (path speed and joint trajectory) and solves it in two steps - First, we solve an inner subproblem that considers a fixed joint trajectory and maximizes path speed, for which we obtain a closed form solution that considers all joint velocity and acceleration restrictions. Moreover, we establish that the value of the inner subproblem is convex. Then, we solve an outer subproblem that takes a subgradient of the inner subproblem's value to update the trajectory with a Primal-Dual optimization method that considers all path accuracy and joint position restrictions. We show the efficacy of our proposed approach with simulations.

关键词： Accuracy Closed-form solutions Tracking Optimization methods Spraying End effectors Trajectory

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SINCHDrone Technology Demonstration UAV Hybrid Incorporating Power Regeneration Technologies & Weight Minimization

SINCHDrone Technology Demonstration UAV Hybrid Incorporating...

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2023 IEEE Conference on Technologies for Sustainability, SusTech 2023

作者： Kudebeh, Kyrie Baez, Jeff Austin, Liam Yu, Zhen Lo, Alton Dobbs, Steven K. Rico, Joseph California State Polytechnic University Pomona Electrical and Computer Engineering Department PomonaCA United States California State Polytechnic University Pomona Aerospace Engineering Department PomonaCA United States California State Polytechnic University Pomona Mechanical Engineering Department PomonaCA United States

ISBN: (纸本)9798350345483

In this paper, an in-flight power regeneration and structural battery integration approach were employed to increase the endurance, range, and therefore mission capability of a VTOL (Vertical Takeoff and Landing) fixed-wing UAV (Unmanned Aerial Vehicle) by a multidisciplinary student team in California State polytechnic University, Pomona. The average flight time for a UAV drone has a maximum flight time of 30 minutes, limiting the number of applications that can be used. Although military drones have flight time measured in hours, their cost, size, and complexity eliminate them from commercial use even after they may be retired from military use. Project BANSHEE's overarching goal is to increase the range and endurance of a UAV in a compact and economical manner. This is to be achieved by the integration of power generation and storage equipment into the load-bearing structure of the airframe. Doing so will decrease the parasitic weight from external components and extend the battery life of the craft, allowing for longer flight time. Modifications to currently available drones such as the Storm4 are being made in order to perform autonomous flight plans and in the future: return to home base when battery is low, exchange depleted battery with new one while maintaining power through induction charging. © 2023 IEEE.

关键词： Drones

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