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Simple homogeneous shear flows of frictionless, deformable particles are studied by particle simulations at large shear rates and for differently soft, deformable particles. The particle stiffness sets a time-scale that can be used to scale…

软凝聚态物质 · 物理学 2024-07-25 Dalila Vescovi , Stefan Luding

The semiring of discrete dynamical systems is a simple algebraic model for modularity in deterministic systems. The objects of the semiring are finite transformations (viewed as directed graphs and regarded up to isomorphism), the sum of…

环与代数 · 数学 2026-03-30 Maximilien Gadouleau , Marianne Johnson

A black hole binary approaching merger undergoes changes in its inspiral rate as energy and angular momentum are lost from the orbits into the horizons. This effect strengthens as the black holes come closer. We use numerical relativity…

广义相对论与量子宇宙学 · 物理学 2026-05-12 Samanwaya Mukherjee , Sayak Datta , Sukanta Bose , Khun Sang Phukon

Model merging is a flexible and computationally tractable approach to merge single-task checkpoints into a multi-task model. Prior work has solely focused on constrained multi-task settings where there is a one-to-one mapping between a…

计算机视觉与模式识别 · 计算机科学 2025-04-16 Juan Garcia Giraldo , Nikolaos Dimitriadis , Ke Wang , Pascal Frossard

The light damping hypothesis is usually assumed in structural dynamics since dissipative forces are in general weak with respect to inertial and elastic forces. In this paper a novel numerical method of time integration based on the…

数值分析 · 数学 2025-04-01 Mario Lázaro

Spatial time series imputation is critically important to many real applications such as intelligent transportation and air quality monitoring. Although recent transformer and diffusion model based approaches have achieved significant…

机器学习 · 计算机科学 2023-09-06 Shunyang Zhang , Senzhang Wang , Xianzhen Tan , Ruochen Liu , Jian Zhang , Jianxin Wang

Distributed optical fiber acoustic sensing (DAS) is a rapidly-developed seismic acquisition technology with advantages of low cost, high resolution, high sensitivity, and small interval, etc. Nonetheless, consecutively missing cases often…

地球物理 · 物理学 2024-04-23 Ming Cheng , Jun Lin , Xintong Dong , Shaoping Lu , Tie Zhong

Detectable electromagnetic counterparts to gravitational waves from compact binary mergers can be produced by outflows from the black hole-accretion disk remnant during the first ten seconds after the merger. Two-dimensional axisymmetric…

We consider the reversible adsorption of dimers on a regular lattice, where adsorption occurs on a finite fraction of sites selected randomly. By comparing this system to the pure system where all sites are available for adsorption, we show…

统计力学 · 物理学 2009-11-13 J. Talbot , G. Tarjus , P. Viot

We investigate aggregation and fragmentation dynamics of tracers and inertial aggregates in random flows leading to steady state size distributions. Our objective is to elucidate the impact of changes in aggregation rates, due to…

流体动力学 · 物理学 2017-06-19 Ksenia Guseva , Ulrike Feudel

In this work, models of rubble pile binary secondaries are simulated in different spin states in a system similar in size and scale to Didymos-Dimorphos. The numerical modeling is performed in the N-body Chrono-based software GRAINS, which…

地球与行星天体物理 · 物理学 2025-07-15 Ethan R. Burnett , Iosto Fodde , Fabio Ferrari

A new method, based on simulated annealing technique and aimed at the inverse problem in the analysis of intergalactic or interstellar complex spectra of hydrogen and metal lines, is outlined. We consider the process of line formation in…

天体物理学 · 物理学 2007-05-23 Sergei A. Levshakov

We introduce a novel framework of continuous-time ultra-wideband-inertial sensor fusion for online motion estimation. Quaternion-based cubic cumulative B-splines are exploited for parameterizing motion states continuously over time.…

机器人学 · 计算机科学 2023-06-13 Kailai Li , Ziyu Cao , Uwe D. Hanebeck

Seismic imaging is the numerical process of creating a volumetric representation of the subsurface geological structures from elastic waves recorded at the surface of the Earth. As such, it is widely utilized in the energy and construction…

地球物理 · 物理学 2024-11-05 Juan Romero , Wolfgang Heidrich , Nick Luiken , Matteo Ravasi

Oscillatory media can exhibit the coexistence of synchronized and desynchronized regions, so-called chimera states, for uniform parameters and symmetrical coupling. In a phase-balanced chimera state, where the totals of synchronized and…

混沌动力学 · 物理学 2015-05-22 Sindre W. Haugland , Lennart Schmidt , Katharina Krischer

Assessing the similarity of two images is a complex task that attracts significant efforts in the image processing community. The widely used Structural Similarity Index Measure (SSIM) addresses this problem by quantifying a perceptual…

数值分析 · 数学 2022-11-29 Francesco Marchetti , Gabriele Santin

Non-spherical particles transported by an anisotropic turbulent flow preferentially align with the mean shear and intermittently tumble when the local strain fluctuates. Such an intricate behaviour is here studied for inertialess,…

软凝聚态物质 · 物理学 2022-12-27 Lorenzo Campana , Mireille Bossy , Jeremie Bec

We consider dynamical models of supersymmetry breaking which naturally incorporate cosmological inflation. The inflaton plays an inevitable role in dynamical SUSY breaking and the hierarchical scales of inflation and SUSY breaking are…

高能物理 - 唯象学 · 物理学 2009-10-30 K. -I. Izawa

A novel multi-focus image fusion algorithm performed in spatial domain based on similarity characteristics is proposed incorporating with region segmentation. In this paper, a new similarity measure is developed based on the structural…

计算机视觉与模式识别 · 计算机科学 2022-02-01 Ya-Qiong Zhang , Xiao-Jun Wu , Hui Li

We study the symmetric inclusion process (SIP) in the condensation regime. We obtain an explicit scaling for the variance of the density field in this regime, when initially started from a homogeneous product measure. This provides relevant…

概率论 · 数学 2020-05-11 Mario Ayala , Gioia Carinci , Frank Redig