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Traditional dynamic security assessment faces challenges as power systems are experiencing a transformation to inverter-based-resource (IBR) dominated systems, for which electromagnetic transient (EMT) dynamics have to be considered.…

动力系统 · 数学 2023-02-21 Kaiyang Huang , Min Xiong , Yang Liu , Kai Sun , Feng Qiu

Precisely locating low-frequency oscillation sources is the prerequisite of suppressing sustained oscillation, which is an essential guarantee for the secure and stable operation of power grids. Using synchrophasor measurements, a machine…

信号处理 · 电气工程与系统科学 2017-11-13 Yao Meng , Zhe Yu , Di Shi , Desong Bian , Zhiwei Wang

We propose an immersed boundary scheme for the numerical resolution of the Complete Electrode Model in Electrical Impedance Tomography, that we use as a main ingredient in the resolution of inverse problems in medical imaging. Such method…

数值分析 · 数学 2023-05-24 Jérémi Dardé , Niami Nasr , Lisl Weynans

Adversarial evasion attacks have been very successful in causing poor performance in a wide variety of machine learning applications. One such application is radio frequency spectrum sensing. While evasion attacks have proven particularly…

信号处理 · 电气工程与系统科学 2020-10-21 Matthew DelVecchio , Vanessa Arndorfer , William C. Headley

We use random matrix theory (RMT) to study the first two moments of the wave power transmitted in time reversal invariant systems having ergodic motion. Dissipation is modeled by a number of loss channels of variable coupling strength. To…

介观与纳米尺度物理 · 物理学 2009-11-10 Igor Rozhkov , Yan V. Fyodorov , Richard L. Weaver

To reduce operation-and-maintenance expenses (OPEX) and to ensure optical network survivability, optical network operators need to detect and diagnose faults in a timely manner and with high accuracy. With the rapid advancement of telemetry…

网络与互联网体系结构 · 计算机科学 2022-04-15 Khouloud Abdelli , Helmut Griesser , Peter Ehrle , Carsten Tropschug , Stephan Pachnicke

Accurate characterization of microseismic events during fluid injection in sedimentary formations is essential to mitigate environmental risks. The source mechanism for microseismic events related to a slip on a fault plane is given by a…

地球物理 · 物理学 2026-03-18 Ujjwal Shekhar , Einar Iversen , Florin A. Radu , Inga Berre , Morten Jakobsen

This paper considers a distributed wave-based sensing system that probes a scene consisting of multiple interacting idealized targets. Each sensor is a collocated transmit-receive pair that is capable of transmitting arbitrary wideband…

光学 · 物理学 2015-10-27 Jerry Kim , Margaret Cheney , Eric Mokole

This paper addresses a critical preliminary step in radar signal processing: detecting the presence of a radar signal and robustly estimating its bandwidth. Existing methods which are largely statistical feature-based approaches face…

信号处理 · 电气工程与系统科学 2024-03-01 Akila Pemasiri , Zi Huang , Fraser Williams , Ethan Goan , Simon Denman , Terrence Martin , Clinton Fookes

Triple Modular Redundancy (TMR) is a suitable fault tolerant technique for SRAM-based FPGA. However, one of the main challenges in achieving 100% robustness in designs protected by TMR running on programmable platforms is to prevent upsets…

硬件体系结构 · 计算机科学 2011-11-09 F. Lima Kastensmidt , L. Sterpone , L. Carro , M. Sonza Reorda

This paper proposes a robust method for fault detection and severity estimation in multivariate time-series data to enhance predictive maintenance of mechanical systems. We use the Temporal Graph Convolutional Network (T-GCN) model to…

系统与控制 · 电气工程与系统科学 2025-04-07 Youngjae Jeon , Eunho Heo , Jinmo Lee , Taewon Uhm , Dongjin Lee

Extreme Learning Machines (ELM) provide a fast alternative to traditional gradient-based learning in neural networks, offering rapid training and robust generalization capabilities. Its theoretical basis shows its universal approximation…

机器学习 · 计算机科学 2024-06-27 Ergun Biçici

This work extends the results of [Garde and Hyv\"onen, Math. Comp. 91:1925-1953] on series reversion for Calder\'on's problem to the case of realistic electrode measurements, with both the internal admittivity of the investigated body and…

数值分析 · 数学 2023-07-19 Henrik Garde , Nuutti Hyvönen , Topi Kuutela

The high tracking overhead, the amount of up-front effort required to selecting the trace points, and the lack of effective data analysis model are the significant barriers to the adoption of intra-component tracking for fault diagnosis…

软件工程 · 计算机科学 2022-10-17 Wei Zhang , Yuxi Hu , Bolong Tan , Xiaohai Shi , Jianhui Jiang

As inverter-based resources (IBRs) penetrate power systems, the dynamics become more complex, exhibiting multiple timescales, including electromagnetic transient (EMT) dynamics of power electronic controllers and electromechanical dynamics…

系统与控制 · 电气工程与系统科学 2025-03-17 Kaiyang Huang , Min Xiong , Yang Liu , Kai Sun

In this work, we present a method which determines optimal multi-step dynamic mode decomposition (DMD) models via entropic regression, which is a nonlinear information flow detection algorithm. Motivated by the higher-order DMD (HODMD)…

机器学习 · 统计学 2024-06-19 Christopher W. Curtis , Erik Bollt , Daniel Jay Alford-Lago

Techniques have been proposed to estimate unknown antenna impedance due to time-varying near-field loading conditions at multiple-input single-output (MISO) receivers. However, it remains unclear when a change occurs and impedance…

信息论 · 计算机科学 2022-11-08 Shaohan Wu

Early fault diagnosis is imperative for the proper functioning of rotating machines. It can reduce economic losses in the industry due to unexpected failures. Existing fault analysis methods are either expensive or demand expertise for the…

信号处理 · 电气工程与系统科学 2025-11-03 Sagar Dutta , Banani Basu , Fazal Ahmed Talukdar

To plan a rapid response and minimize operational costs, passive optical network operators require to automatically detect and identify faults that may occur in the optical distribution network. In this work, we present DSP-Enhanced OTDR, a…

信号处理 · 电气工程与系统科学 2018-01-22 Manuel P. Fernandez , Laureano A. Bulus Rossini , Juan Pablo Pascual , Pablo A. Costanzo Caso

Irregularly sampled time series forecasting, characterized by non-uniform intervals, is prevalent in practical applications. However, previous research have been focused on regular time series forecasting, typically relying on transformer…

机器学习 · 计算机科学 2024-10-01 Byunghyun Kim , Jae-Gil Lee