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Full-Waveform Inversion (FWI) is a nonlinear iterative seismic imaging technique that, by reducing the misfit between recorded and predicted seismic waveforms, can produce detailed estimates of subsurface geophysical properties.…

地球物理 · 物理学 2024-11-22 Vahid Negahdari , Seyed Reza Moghadasi , Mohammad Reza Razvan

We consider the localization of a mobile millimeter-wave client in a large indoor environment using multilayer perceptron neural networks (NNs). Instead of training and deploying a single deep model, we proceed by choosing among multiple…

信号处理 · 电气工程与系统科学 2023-12-01 Anish Shastri , Andres Garcia-Saavedra , Paolo Casari

Maxwell equations generally explain the propagation of light through an arbitrary medium by using wave mechanics. However, scientific evidence since Newton suggest a discrete interpretation of light more generally explains its nature. This…

光学 · 物理学 2018-11-20 Travis Hamilton , Hooman Mohseni

X-ray Photoelectron Spectroscopy (XPS) is a crucial technique for material surface analysis, yet interpreting its spectra is often challenging for both human analysts and automated methods due to the prevalence of variable spectral shifts…

材料科学 · 物理学 2026-03-06 Issa Saddiq , Yuxin Fan , Robert G. Palgrave , Mark A. Isaacs , David Morgan , Keith T. Butler

Unmanned Surface Vehicles (USVs) have become critical tools for marine exploration, environmental monitoring, and autonomous navigation. Accurate estimation of wave direction is essential for improving USV navigation and ensuring…

机器学习 · 计算机科学 2025-02-13 Manele Ait Habouche , Mickaël Kerboeuf , Goulven Guillou , Jean-Philippe Babau

Lensed gravitational waves (GWs) provide a new window into the study of dark matter substructures, yet the faint interference signatures they produce are buried in detector noise. To address this challenge, we develop a deep learning…

天体物理仪器与方法 · 物理学 2025-11-25 Mengfei Sun , Jie Wu , Jin Li , Nan Yang , Xianghe Ma , Borui Wang , Minghui Zhang , Yuanhong Zhong

This paper pertains to an emerging machine learning paradigm: learning higher-order functions, i.e. functions whose inputs are functions themselves, $\textit{particularly when these inputs are Neural Networks (NNs)}$. With the growing…

机器学习 · 计算机科学 2024-10-31 Ioannis Kalogeropoulos , Giorgos Bouritsas , Yannis Panagakis

The paper is devoted to the presentation of the non-spectral methods of analysis of the natural measurements of the internal gravity waves in the ocean with the purpose to determine characteristics of the wave-trains composing the measured…

大气与海洋物理 · 物理学 2007-07-13 Vitaly A. Bulatov

Objective: Ultrasound Shear Wave Elastography (SWE) demonstrates great potential in assessing soft-tissue pathology by mapping tissue stiffness, which is linked to malignancy. Traditional SWE methods have shown promise in estimating tissue…

图像与视频处理 · 电气工程与系统科学 2025-05-27 Ahsan Habib Akash , MD Jahin Alam , Md. Kamrul Hasan

Accurate, detailed, and regularly updated bathymetry, coupled with complex semantic content, is essential for under-mapped shallow-water environments facing increasing climatological and anthropogenic pressures. However, existing approaches…

计算机视觉与模式识别 · 计算机科学 2025-11-12 Panagiotis Agrafiotis , Begüm Demir

High-frequency wave propagation in near-inertial wave shear has been considered fundamental in setting the spectral character of the oceanic internal wave continuum and for transporting energy to wave-breaking. We compare idealized ray…

大气与海洋物理 · 物理学 2023-10-27 Kurt L Polzin , Yuri V Lvov

Inertial Navigation Systems (INS) are algorithms that fuse inertial measurements of angular velocity and specific acceleration with supplementary sensors including GNSS and magnetometers to estimate the position, velocity and attitude, or…

系统与控制 · 电气工程与系统科学 2023-08-23 Pieter van Goor , Tarek Hamel , Robert Mahony

The European Space Agency's Copernicus Sentinel-1 (S-1) mission is a constellation of C-band synthetic aperture radar (SAR) satellites that provide unprecedented monitoring of the world's oceans. S-1's wave mode (WV) captures 20x20 km image…

In plane-wave imaging, multiple unfocused ultrasound waves are transmitted into a medium of interest from different angles and an image is formed from the recorded reflections. The number of plane waves used leads to a trade-off between…

图像与视频处理 · 电气工程与系统科学 2021-11-23 Georgios Pilikos , Chris L. de Korte , Tristan van Leeuwen , Felix Lucka

Unusually long electrostatic solitary waves (ESWs) are discovered in 2D and 3D Particle-in-Cell studies of the process of ion beam neutralization by electron emission from filaments. These ESWs are long because trapped and untrapped…

等离子体物理 · 物理学 2024-06-12 Nakul Nuwal , Igor D. Kaganovich , Deborah A. Levin

With the rapid growth of dynamic vision sensor (DVS) data, constructing a low-energy, efficient data retrieval system has become an urgent task. Hash learning is one of the most important retrieval technologies which can keep the distance…

计算机视觉与模式识别 · 计算机科学 2026-04-14 Zihao Mei , Jianhao Li , Bolin Zhang , Chong Wang , Lijun Guo , Guoqi Li , Jiangbo Qian

Effective spatio-temporal measurements of water surface elevation (water waves) in laboratory experiments are crucial for scientific and engineering research. Existing techniques are often cumbersome, computationally heavy and generally…

大气与海洋物理 · 物理学 2024-10-22 Noam Ginio , Michael Lindenbaum , Barak Fishbain , Dan Liberzon

Weakly supervised person search aims to jointly detect and match persons with only bounding box annotations. Existing approaches typically focus on improving the features by exploring relations of persons. However, scale variation problem…

计算机视觉与模式识别 · 计算机科学 2024-01-04 Benzhi Wang , Yang Yang , Jinlin Wu , Guo-jun Qi , Zhen Lei

Binary Neural Networks~(BNNs) have been proven to be highly effective for deploying deep neural networks on mobile and embedded platforms. Most existing works focus on minimizing quantization errors, improving representation ability, or…

计算机视觉与模式识别 · 计算机科学 2024-07-09 Jingyang Xiang , Zuohui Chen , Siqi Li , Qing Wu , Yong Liu

Frequently encountered in nature, internal solitary waves in stratified fluids are well-observed and well-studied from the experimental, the theoretical, and the numerical perspective. From the mathematical point of view, these waves are…

偏微分方程分析 · 数学 2014-11-03 Andreas Klaiber