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This paper extends energy flux methods to handle three-dimensional ocean acoustic environments, the implemented solution captures horizontally refracted incoherent acoustic intensity, and its required computational effort is predominantly…

计算物理 · 物理学 2025-06-05 Mark Langhirt , Charles Holland , Ying-Tsong Lin

Physics-based inverse modeling techniques are typically restricted to particular research fields, whereas popular machine-learning-based ones are too data-dependent to guarantee the physical compatibility of the solution. In this paper,…

神经与进化计算 · 计算机科学 2023-01-18 Ruiyuan Kang , Dimitrios C. Kyritsis , Panos Liatsis

Physics-Informed Neural Networks (PINNs) are a powerful class of numerical solvers for partial differential equations, employing deep neural networks with successful applications across a diverse set of problems. However, their…

数值分析 · 数学 2024-04-18 Tianhao Hu , Bangti Jin , Zhi Zhou

We study an inverse problem for the viscoacoustic wave equation, an integro-differential model describing wave propagation in viscoacoustic media with memory in the leading order term. The medium is characterized by a spatially varying…

偏微分方程分析 · 数学 2026-03-26 Giovanni Covi , Maarten de Hoop , Mikko Salo

This paper presents a shape optimisation system to design the shape of an acoustically-hard object in the three-dimensional open space. Boundary element method (BEM) is suitable to analyse such an exterior field. However, the conventional…

数值分析 · 数学 2021-05-11 Toru Takahashi , Daisuke Sato , Hiroshi Isakari , Toshiro Matsumoto

In this paper, we present BERN-NN as an efficient tool to perform bound propagation of Neural Networks (NNs). Bound propagation is a critical step in wide range of NN model checkers and reachability analysis tools. Given a bounded input…

机器学习 · 计算机科学 2022-11-29 Wael Fatnassi , Haitham Khedr , Valen Yamamoto , Yasser Shoukry

The binaural minimum-variance distortionless-response (BMVDR) beamformer is a well-known noise reduction algorithm that can be steered using the relative transfer function (RTF) vector of the desired speech source. Exploiting the…

音频与语音处理 · 电气工程与系统科学 2022-11-22 Nico Gößling , Wiebke Middelberg , Simon Doclo

We present a new integral equation for solving the Maxwell scattering problem against a perfect conductor. The very same algorithm also applies to sound-soft as well as sound-hard Helmholtz scattering, and in fact the latter two can be…

偏微分方程分析 · 数学 2016-07-05 Andreas Rosén

Physics--informed neural networks (PINN) have shown their potential in solving both direct and inverse problems of partial differential equations. In this paper, we introduce a PINN-based deep learning approach to reconstruct…

计算工程、金融与科学 · 计算机科学 2024-04-24 Yuxuan Chen , Ce Wang , Yuan Hui , Mark Spivack

Physics-informed neural networks (PINNs) have emerged as a transformative framework for addressing operator learning and inverse problems involving the Korteweg-de Vries (KdV) equation for internal solitary waves. By integrating physical…

流体动力学 · 物理学 2025-06-18 Ming Kang , Hang Li , Qiwen Tan , Zhan Wang , Ruipeng Li , Junfang Zhao , Hui Xiang , Dixia Fan

We introduce a Physics-Informed Neural Networks(PINN) to solve a relativistic Burgers equation in the exterior domain of a Schwarzschild black hole. Our main contribution is a PINN architecture that is able to simulate shock wave formations…

数值分析 · 数学 2025-06-04 Shuyang Xiang

The computation of the seismic wavefield by solving the Helmholtz equation is crucial to many practical applications, e.g., full waveform inversion. Physics-informed neural networks (PINNs) provide functional wavefield solutions represented…

地球物理 · 物理学 2024-08-29 Xinquan Huang , Tariq Alkhalifah

A rarely exploited advantage of time-domain boundary integral equations compared to their frequency counterparts is that they can be used to treat certain nonlinear problems. In this work we investigate the scattering of acoustic waves by a…

数值分析 · 数学 2017-09-29 Lehel Banjai , Alexander Rieder

Partial differential equations (PDEs) are widely used to describe relevant phenomena in dynamical systems. In real-world applications, we commonly need to combine formal PDE models with (potentially noisy) observations. This is especially…

机器学习 · 计算机科学 2024-07-08 Monika Nagy-Huber , Volker Roth

In this paper we propose and analyse a hybrid numerical-asymptotic boundary element method for the solution of problems of high frequency acoustic scattering by a class of sound-soft nonconvex polygons. The approximation space is enriched…

数值分析 · 数学 2014-01-14 David P. Hewett , Simon N. Chandler-Wilde , Stephen Langdon , Ashley Twigger

Solving Singularly Perturbed Differential Equations (SPDEs) presents challenges due to the rapid change of their solutions at the boundary layer. In this manuscript, We propose Asymptotic Physics-Informed Neural Networks (ASPINN), a…

机器学习 · 计算机科学 2024-09-23 Sen Wang , Peizhi Zhao , Tao Song

Underwater acoustic environment estimation is a challenging but important task for remote sensing scenarios. Current estimation methods require high signal strength and a solution to the fragile echo labeling problem to be effective. In…

Variational Physics-Informed Neural Networks (VPINNs) utilize a variational loss function to solve partial differential equations, mirroring Finite Element Analysis techniques. Traditional hp-VPINNs, while effective for high-frequency…

机器学习 · 计算机科学 2024-04-19 Thivin Anandh , Divij Ghose , Himanshu Jain , Sashikumaar Ganesan

Nanoscale thermal transport is governed by the phonon Boltzmann transport equation (BTE). However, simulating the sub-continuum dynamics remains computationally prohibitive due to the high dimensionality of the phase space and the intrinsic…

介观与纳米尺度物理 · 物理学 2026-04-06 Roberto Riganti , Luca Dal Negro

In this article, we study the one-dimensional inverse problem of determining the memory kernel by the integral overdetermination condition for the direct problem of finding the velocity potential and the displacement of boundary points. A…

偏微分方程分析 · 数学 2026-02-24 Zhanna D. Totieva , Kush Kinra , Manil T. Mohan