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We rigorously prove the bifurcation of slow-moving pattern interfaces with general direction in a two-dimensional Swift-Hohenberg-type model close to a Turing instability for a large class of nonlinearities. These interfaces describe the…

偏微分方程分析 · 数学 2026-04-13 Bastian Hilder , Jonas Jansen

Iterative Learning Control (ILC) enables high control performance through learning from measured data, using only limited model knowledge in the form of a nominal parametric model. Robust stability requires robustness to modeling errors,…

系统与控制 · 计算机科学 2020-03-30 Lennart Blanken , Tom Oomen

This paper introduces a simple but highly efficient ensemble for robust texture classification, which can effectively deal with translation, scale and changes of significant viewpoint problems. The proposed method first inherits the spirit…

计算机视觉与模式识别 · 计算机科学 2012-03-06 Shu Kong , Donghui Wang

We consider the construction of semi-implicit linear multistep methods which can be applied to time dependent PDEs where the separation of scales in additive form, typically used in implicit-explicit (IMEX) methods, is not possible. As…

数值分析 · 数学 2020-01-14 Giacomo Albi , Lorenzo Pareschi

We introduce conservative integrators for long term integration of piecewise smooth systems with transversal dynamics and piecewise smooth conserved quantities. In essence, for a piecewise dynamical system with piecewise defined conserved…

数值分析 · 数学 2022-02-03 Anil N. Hirani , Andy T. S. Wan , Nikolas Wojtalewicz

We introduce a new kinetic interface model suitable for simulating adsorption-reaction processes which take place preferentially at surface defects such as steps and vacancies. As the average interface velocity is taken to zero, the self-…

统计力学 · 物理学 2009-10-31 H. Kaya , A. Kabakcioglu , A. Erzan

We propose a seamless multiscale method which approximates the macroscopic behavior of the passive advection-diffusion equations with steady incompressible velocity fields with multi-spatial scales. The method uses decompositions of the…

数值分析 · 数学 2016-06-22 Yoonsang Lee , Bjorn Engquist

In this paper, we present a block-oriented scheme for adaptive mesh refinement based on summation-by-parts (SBP) finite difference methods and simultaneous-approximation-term (SAT) interface treatment. Since the order of accuracy at SBP-SAT…

数值分析 · 数学 2019-03-05 Anna Nissen , Katharina Kormann , Magnus Grandin , Kristoffer Virta

We introduce and analyze a lower envelope method (LEM) for the tracking of interfaces motion in multiphase problems. The main idea of the method is to define the phases as the regions where the lower envelope of a set of functions coincides…

数值分析 · 数学 2021-12-07 Antoine Laurain

We propose a new diffuse interface model for simulating an inductionless magnetohydrodynamic (MHD) free surface problem. By using the Onsager's variational principle and the laws of thermodynamics, we derive a thermodynamically consistent…

数值分析 · 数学 2025-09-29 Jiancheng Wang , Maojun Li , Zeyu Xia , Liwei Xu

Robust and accurate pose estimation of a robotic platform, so-called sensor-based odometry, is an essential part of many robotic applications. While many sensor odometry systems made progress by adding more complexity to the ego-motion…

机器人学 · 计算机科学 2023-07-10 Ignacio Vizzo , Tiziano Guadagnino , Benedikt Mersch , Louis Wiesmann , Jens Behley , Cyrill Stachniss

Monocular visual SLAM enables 3D reconstruction from internet video and autonomous navigation on resource-constrained platforms, yet suffers from scale drift, i.e., the gradual divergence of estimated scale over long sequences. Existing…

计算机视觉与模式识别 · 计算机科学 2026-01-15 Yuchen Wu , Jiahe Li , Xiaohan Yu , Lina Yu , Jin Zheng , Xiao Bai

The operation of large-scale infrastructure networks requires scalable optimization schemes. To guarantee safe system operation, a high degree of feasibility in a small number of iterations is important. Decomposition schemes can help to…

系统与控制 · 电气工程与系统科学 2024-12-02 Alexander Engelmann , Sungho Shin , François Pacaud , Victor M. Zavala

A novel interface reconstruction strategy for volume of fluid (VOF) methods is introduced that represents the liquid-gas interface as two planes that co-exist within a single computational cell. In comparison to the piecewise linear…

流体动力学 · 物理学 2024-03-19 Austin Han , Robert Chiodi , Olivier Desjardins

Impedance-based small-signal stability analysis is widely applied in practical engineering with modular multilevel converters (MMCs). However, the deficiencies of existing impedance models (IMs) and the idealized extension for the single…

系统与控制 · 电气工程与系统科学 2023-03-17 Chongbin Zhao , Qirong Jiang

We present a new class of exponential integrators for ordinary differential equations: locally exact modifications of known numerical schemes. Local exactness means that they preserve the linearization of the original system at every point.…

数值分析 · 数学 2013-08-08 Jan L. Cieśliński

We investigate the use of time-dependent surfaces in Monte Carlo transport simulation to accurately model prescribed, continuous object movements. The performance of the continuous time-dependent surface technique, relative to the typical…

计算物理 · 物理学 2023-05-15 Ilham Variansyah , Ryan G. McClarren

By moving a depth sensor around a room, we compute a 3D CAD model of the environment, capturing the room shape and contents such as chairs, desks, sofas, and tables. Rather than reconstructing geometry, we match, place, and align each…

计算机视觉与模式识别 · 计算机科学 2020-04-08 Hamid Izadinia , Steven M. Seitz

Multi-view mesh reconstruction remains a core challenge in computer graphics and vision, especially for recovering high-frequency geometry from sparse observations. Recent methods such as 3D Gaussian Splatting (3DGS) and Neural Radiance…

计算机视觉与模式识别 · 计算机科学 2026-05-11 Nandhana Sunil , Abhirami R Iyer , Avirup Mandal

The accurate modeling of topology changes remains a significant challenge in geometric Volume of Fluid (VOF) simulations. When using traditional single-plane reconstruction (PLIC), fluid structures smaller than the mesh size cannot be…

度量几何 · 数学 2026-03-30 Andrew Cahaly , Valentin Wasquel , Zonghao Zou , Olivier Desjardins , Fabien Evrard