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Path-Based Correlation Analysis of Meteorological Factors and eLoran Signal Delay Variations
Junwoo Song, Pyo-woong Son
https://arxiv.org/abs/2509.26020 https://

Path-Based Correlation Analysis of Meteorological Factors and eLoran Signal Delay Variations
Unlike GNSS, which is vulnerable to jamming and spoofing due to its inherently weak received power, eLoran exhibits robustness owing to its high field strength. Therefore, the eLoran system can maintain reliable operation even in scenarios where GNSS becomes unavailable. However, since eLoran signals propagate through ground waves, the propagation delay is susceptible to changes in surface conditions, including both terrain and meteorological variations. This study aims to analyze the correlati…

Well-Quasi-Ordering Eulerian Digraphs Embeddable in Surfaces by Strong Immersion
Dario Cavallaro, Ken-ichi Kawarabayashi, Stephan Kreutzer
https://arxiv.org/abs/2509.26260 https…

Well-Quasi-Ordering Eulerian Digraphs Embeddable in Surfaces by Strong Immersion
We prove that for every surface $Σ$, the class of Eulerian directed graphs that are Eulerian embeddable into $Σ$ (in particular they have degree at most $4$) is well-quasi-ordered by strong immersion. This result marks one of the most versatile directed graph classes (besides tournaments) for which we are aware of a positive well-quasi-ordering result regarding a well-studied graph relation. Our result implies that the class of bipartite circle graphs is well-quasi-ordered under the pivot-m…

Performance Evaluation of eLoran Spatial ASF Corrections Based on Measured ASF Map
Jaewon Yu, Pyo-Woong Son
https://arxiv.org/abs/2509.26018 https://arxiv.…

Performance Evaluation of eLoran Spatial ASF Corrections Based on Measured ASF Map
This paper analyzes the effectiveness of spatial ASF correction methods in the Korean eLoran system using measured ASF maps. Three correction scenarios were evaluated under identical simulation settings: no correction (S0), local correction using true ASF values (S1), and wide-area correction using a single reference station value (S2). Simulation results show that S1 consistently achieved the lowest positioning errors, while S0 exhibited the largest errors with extensive high-error regions. S2…

ElasWave: An Elastic-Native System for Scalable Hybrid-Parallel Training
Xueze Kang, Guangyu Xiang, Yuxin Wang, Hao Zhang, Yuchu Fang, Yuhang Zhou, Zhenheng Tang, Youhui Lv, Eliran Maman, Mark Wasserman, Alon Zameret, Zhipeng Bian, Shushu Chen, Zhiyou Yu, Jin Wang, Xiaoyu Wu, Yang Zheng, Chen Tian, Xiaowen Chu
https://arxiv.org/abs/2510.00…

ElasWave: An Elastic-Native System for Scalable Hybrid-Parallel Training
Large-scale LLM pretraining today spans $10^{5}$--$10^{6}$ accelerators, making failures commonplace and elasticity no longer optional. We posit that an elastic-native training system must simultaneously ensure (i) Parameter Consistency, (ii) low Mean Time to Recovery (MTTR), (iii) high post-change Throughput, and (iv) Computation Consistency. This objective set not has never been jointly attained by prior work. To achieve these goals, we present ElasWave, which provides per-step fault toleranc…

Control of Conservation Laws in the Nonlocal-to-Local Limit
Jan Friedrich, Michael Herty, Claudia Nocita
https://arxiv.org/abs/2510.00677 https://arxiv.org…

Control of Conservation Laws in the Nonlocal-to-Local Limit
We analyze a class of control problems where the initial datum acts as a control and the state is given by the entropy solution of (local) conservation laws by a nonlocal-to-local limiting strategy. In particular we characterize the limit up to subsequence of minimizers to nonlocal control problems as minimizer of the corresponding local ones. Moreover, we also prove an analogous result at a discrete level by means of a Eulerian-Lagrangian scheme.

On the joint observability of flow fields and particle properties from Lagrangian trajectories: evidence from neural data assimilation
Ke Zhou, Samuel J. Grauer
https://arxiv.org/abs/2510.00479

On the joint observability of flow fields and particle properties from Lagrangian trajectories: evidence from neural data assimilation
We numerically investigate the joint observability of flow states and unknown particle properties from Lagrangian particle tracking (LPT) data. LPT offers time-resolved, volumetric measurements of particle trajectories, but experimental tracks are spatially sparse, potentially noisy, and may be further complicated by inertial transport, raising the question of whether both Eulerian fields and particle characteristics can be reliably inferred. To address this, we develop a data assimilation fram…

Replaced article(s) found for physics.comp-ph. https://arxiv.org/list/physics.comp-ph/new
[1/1]:
- A Phase Field Formulation of Frictional Sliding Contact for 3D Fully Eulerian Fluid Structure Int...
Biswajeet Rath, Rajeev K. Jaiman

Development of a Model Order Reduced Arbitrary Lagrangian Eulerian (MORALE) formulation for structures subjected to dynamic moving loads
Atul Anantheswar, Jannick Kehls, Ines Wollny, Tim Brepols, Stefanie Reese, Michael Kaliske
https://arxiv.org/abs/2509.20069

Development of a Model Order Reduced Arbitrary Lagrangian Eulerian (MORALE) formulation for structures subjected to dynamic moving loads
In recent developments, it has been demonstrated that the Arbitrary Lagrangian Eulerian (ALE) formulation can be utilized to improve computational efficiency, when simulating the response of structures subjected to moving loads. It is also well established in literature, that Model Order Reduction (MOR) techniques significantly enhance calculation speed. This contribution details the combination of both these tools into a novel Model Order Reduced Arbitrary Lagrangian Eulerian (MORALE) formulat…

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Experimental study of diffusiophoresis in a cellular flow
Florence Raynal, Menghua Zhao, Romain Volk
https://arxiv.org/abs/2509.23914 https://arxiv.org/pdf…

Experimental study of diffusiophoresis in a cellular flow
In this article, we study experimentally the dispersion of colloids in a two-dimensional, time independent, Rayleigh-Bénard flow in the presence of salt gradients. Due to the additional scalar, the colloids do not follow exactly the Eulerian flow-field, but have a (small) extra-velocity $\mathbf{v}_{\mathrm{dp}} = D_{\mathrm{dp}} \nabla \log C_s$, where $D_\mathrm{dp}$ is the phoretic constant and $C_s$ the salt concentration. Such a configuration is motivated by the theoretical work by Volk \…