Tootfinder

The maths isn’t too difficult, but it would’ve been much simpler, I’m sure, had crickets been invented *after* metrication. https://cytag.nl/@fox/115072007431431386

Temporal Logic-Based Multi-Vehicle Backdoor Attacks against Offline RL Agents in End-to-end Autonomous Driving
Xuan Chen, Shiwei Feng, Zikang Xiong, Shengwei An, Yunshu Mao, Lu Yan, Guanhong Tao, Wenbo Guo, Xiangyu Zhang
https://arxiv.org/abs/2509.16950

Temporal Logic-Based Multi-Vehicle Backdoor Attacks against Offline RL Agents in End-to-end Autonomous Driving
Assessing the safety of autonomous driving (AD) systems against security threats, particularly backdoor attacks, is a stepping stone for real-world deployment. However, existing works mainly focus on pixel-level triggers that are impractical to deploy in the real world. We address this gap by introducing a novel backdoor attack against the end-to-end AD systems that leverage one or more other vehicles' trajectories as triggers. To generate precise trigger trajectories, we first use temporal log…

OpenGVL - Benchmarking Visual Temporal Progress for Data Curation
Pawe{\l} Budzianowski, Emilia Wi\'snios, Gracjan G\'oral, Igor Kulakov, Viktor Petrenko, Krzysztof Walas
https://arxiv.org/abs/2509.17321

OpenGVL - Benchmarking Visual Temporal Progress for Data Curation
Data scarcity remains one of the most limiting factors in driving progress in robotics. However, the amount of available robotics data in the wild is growing exponentially, creating new opportunities for large-scale data utilization. Reliable temporal task completion prediction could help automatically annotate and curate this data at scale. The Generative Value Learning (GVL) approach was recently proposed, leveraging the knowledge embedded in vision-language models (VLMs) to predict task prog…

Innerhalb weniger Tage im August 2025 haben #Waldbrände in #Spanien die höchsten jährlichen #Feueremissionen seit Beginn der

"Guest post: Why the recent slowdown in Arctic sea ice loss is only temporary"
#Arctic #Climate #ClimateChange

Guest post: Why the recent slowdown in Arctic sea ice loss is only temporary - Carbon Brief
Observations reveal that Arctic sea ice extent at the end of summer has halved, since satellite records began in the late 1970s.

Intermediate-temperature specific heat of solids and the rationale behind the Maier-Kelley empirical formula
Valmir Ribeiro, Fernando Parisio
https://arxiv.org/abs/2508.15009 ht…

Intermediate-temperature specific heat of solids and the rationale behind the Maier-Kelley empirical formula
The heat capacity of solids at intermediate-to-high temperatures is of fundamental importance to several fields ranging from geology to material science. It depends on a variety of factors, with anharmonicity and, ultimately, melting playing a pivotal role. In this work we develop a first-principles model from an analytically tractable semi-harmonic oscillator Hamiltonian. The resulting specific heat expression depends not only on the Einstein temperature of the material but also on other physi…

Cluster Expansion and Decay of Correlations for Multidimensional Long-Range Ising Models
Lucas Affonso, Rodrigo Bissacot, Jo\~ao Maia, Jo\~ao F. Rodrigues, Kelvyn Welsch
https://arxiv.org/abs/2508.15666

Cluster Expansion and Decay of Correlations for Multidimensional Long-Range Ising Models
We develop the cluster expansion for the multidimensional multiscaled contours defined by three of us. These contours are suitable for long-range Ising models with interaction $J_{xy}=J(|x-y|)= J/|x-y|^α$, $J>0$, and $α>d$. As an application of the convergence of the cluster expansion at low temperatures, we study the decay of the truncated two-point correlation functions, showing that the decay is algebraic with coefficient $α$.

Circuit-based chatacterization of finite-temperature quantum phases and self-correcting quantum memory
Ruochen Ma, Vedika Khemani, Shengqi Sang
https://arxiv.org/abs/2509.15204 …

Circuit-based chatacterization of finite-temperature quantum phases and self-correcting quantum memory
Quantum phases at zero temperature can be characterized as equivalence classes under local unitary transformations: two ground states within a gapped phase can be transformed into each other via a local unitary circuit. We generalize this circuit-based characterization of phases to systems at finite-temperature thermal equilibrium described by Gibbs states. We construct a channel circuit that approximately transforms one Gibbs state into another provided the two are connected by a path in param…

Machine learning meets Singular Optics II: Single-pixel Detection of Structured Light
Purnesh Singh Badavath, Vijay Kumar
https://arxiv.org/abs/2509.16946 https://

Machine learning meets Singular Optics II: Single-pixel Detection of Structured Light
Structured light beams, including Laguerre-Gaussian (LG), Hermite-Gaussian (HG), and perfect vortex (PV) spatial modes, have been at the forefront of modern optics due to their potential in communications, metrology, and sensing. Traditional recognition methods often demand complex alignments and high-resolution imaging. Speckle-learned recognition (SLR) has emerged as a powerful alternative, exploiting the spatio-temporal speckle fields generated by light-diffuser interactions. This paper buil…

External magnetic field suppression of carbon diffusion in iron
Luke J. Wirth (Department of Materials Science,Engineering, University of Illinois, Urbana-Champaign, Illinois, USA), Dallas R. Trinkle (Department of Materials Science,Engineering, University of Illinois, Urbana-Champaign, Illinois, USA)
https://arxiv.org/abs/2507.…

External magnetic field suppression of carbon diffusion in iron
External magnetic fields reduce diffusion of carbon in BCC iron, but the physical mechanism is not understood. Using DFT calculations with magnetic moments sampled from a Heisenberg model, we calculate diffusivities of carbon in iron at high temperatures and with field. Our model reproduces the measured suppression of diffusivity from field. We find that increasing magnetic disorder flattens the electron density of states compared with the ferromagnetic case, which distorts the octahedral cages…