Tootfinder

Sources detail how Sam Altman, Jensen Huang, Marc Benioff, and others brokered a call between SF Mayor Daniel Lurie and Trump to stop National Guard deployment (Wall Street Journal)
https://www.wsj.com/politics/policy/san-fr

Advancing the hBN Defects Database through Photophysical Characterization of Bulk hBN
Chanaprom Cholsuk, Sujin Suwanna, Tobias Vogl
https://arxiv.org/abs/2507.18093 https://

Advancing the hBN Defects Database through Photophysical Characterization of Bulk hBN
Quantum emitters in hexagonal boron nitride (hBN) have gained significant attention due to a wide range of defects that offer high quantum efficiency and single-photon purity at room temperature. Most theoretical studies on hBN defects simulate monolayers, as this is computationally cheaper than calculating bulk structures. However, most experimental studies are carried out on multilayer to bulk hBN, which creates additional possibilities for discrepancies between theory and experiment. In this…

Vortex dynamics for the Gross-Pitaevskii equation
Manuel del Pino, Rowan Juneman, Monica Musso
https://arxiv.org/abs/2507.18590 https://arxiv.org/pdf/2507.…

Vortex dynamics for the Gross-Pitaevskii equation
We rigorously establish the formal asymptotics of Neu for Gross-Pitaevskii vortex dynamics in the plane. Given any integer $n\geq2$, we construct a family of $n$-vortex solutions with vortices of degree $\pm1$, and describe precisely the solution profile and associated vortex dynamics on an arbitrarily large, finite time interval. We compute an asymptotic expansion of the vortex positions in terms of the vortex core size $ε>0$, and show that the dynamics is governed at leading order as $ε\to0…

Happy that 28 out of 33 talk submissions for Alpaca (https://2025.algorithmicpattern.org/) opted to use markdown rather than PDF. I expected half-and-half, this is really great! PDFs are an awful format - inaccessible, practically unmodifiable (so _not_ open access), with no capacity for embedd…

Benchmarking PDF Accessibility Evaluation A Dataset and Framework for Assessing Automated and LLM-Based Approaches for Accessibility Testing
Anukriti Kumar, Tanushree Padath, Lucy Lu Wang
https://arxiv.org/abs/2509.18965

Nervende Vorschau-App auf dem iPhone: Löschen hilft
Standardmäßig öffnen sich PDFs auf dem iPhone nun in der neuen Vorschau-App alias Preview. Perfekt ist die keineswegs. Ein simpler Trick hilft.
https://www.

This fascinates me. Probably part of the same brain structures that inform my love of history, and my love of figuring out how to get certain old guitar tones
How to Emulate Film Grain in Your Digital Photos | PetaPixel https://petapixel.com/2025/09/19/how-t

How to Emulate Film Grain in Your Digital Photos
It's time to make this complicated topic easy to understand for all photographers chasing a nostalgic feel in their edits.

Voltage-sensitive distribution factors for contingency analysis and topology optimization
Maurizio Titz, Dirk Witthaut, Joost van Dijk, Benjamin Petrick, Nico Westerbeck
https://arxiv.org/abs/2509.19976

Voltage-sensitive distribution factors for contingency analysis and topology optimization
Topology optimization is a promising approach for mitigating congestion and managing changing grid conditions, but it is computationally challenging and requires approximations. Conventional distribution factors like PTDFs and LODFs, based on DC power flow, fail to capture voltage variations, reactive power, and losses - limiting their use in detailed optimization tasks such as busbar splitting. This paper introduces generalized distribution factors derived from a voltage-sensitive linearizatio…

This is bonkers https://flipboard.com/@petapixel/photography-news-5n3gc1f7z/-/a-oE1QjSymQF-PhVB0jgDlIA:a:1814180069-/0

Scientists Create Incredible Tool That Realistically Relights Photos in 3D
Researchers at the Computational Photography Lab at Simon Fraser University in British Columbia, Canada, developed a new software tool that can …

Statistical conservation laws for scalar model problems: Hierarchical evolution equations
Qian Huang, Christian Rohde
https://arxiv.org/abs/2508.15359 https://

Statistical conservation laws for scalar model problems: Hierarchical evolution equations
The probability density functions (PDFs) for the solution of the incompressible Navier-Stokes equation can be represented by a hierarchy of linear equations. This article develops new hierarchical evolution equations for PDFs of a scalar conservation law with random initial data as a model problem. Two frameworks are developed, including multi-point PDFs and single-point higher-order derivative PDFs. These hierarchies capture statistical correlations and guide closure strategies.