Tootfinder

Analysis and Constructive Criticism of the Official Data Protection Impact Assessment of the German Corona-Warn-App
Rainer Rehak, Christian R. K\"uhne, Kirsten Bock
https://arxiv.org/abs/2508.06267

Analysis and Constructive Criticism of the Official Data Protection Impact Assessment of the German Corona-Warn-App
On June 15, 2020, the official data protection impact assessment (DPIA) for the German Corona-Warn-App (CWA) was made publicly available. Shortly thereafter, the app was made available for download in the app stores. However, the first version of the DPIA had significant weaknesses, as this paper argues. However since then, the quality of the official DPIA increased immensely due to interventions and interactions such as an alternative DPIA produced by external experts and extensive public disc…

CoSight: Exploring Viewer Contributions to Online Video Accessibility Through Descriptive Commenting
Ruolin wang, Xingyu Liu, Biao Wang, Wayne Zhang, Ziqian Liao, Ziwen Li, Amy Pavel, Xiang 'Anthony' Chen
https://arxiv.org/abs/2508.08582

CoSight: Exploring Viewer Contributions to Online Video Accessibility Through Descriptive Commenting
The rapid growth of online video content has outpaced efforts to make visual information accessible to blind and low vision (BLV) audiences. While professional Audio Description (AD) remains the gold standard, it is costly and difficult to scale across the vast volume of online media. In this work, we explore a complementary approach to broaden participation in video accessibility: engaging everyday video viewers at their watching and commenting time. We introduce CoSight, a Chrome extension th…

Crab-waist interaction region design and integration for the Super Tau-Charm Facility
Linhao Zhang, Tao Liu, Ye Zou, Penghui Yang, Demin Zhou, Jiancong Bao, Ze Yu, Yuhan Jin, Yihao Mo, Sangya Li, Tianlong He, Qing Luo, Jingyu Tang
https://arxiv.org/abs/2510.09198

Crab-waist interaction region design and integration for the Super Tau-Charm Facility
The Super Tau-Charm Facility (STCF) is a new-generation $e^+e^-$ collider proposed in China, designed to operate in the center-of-mass (CoM) energy range of 2-7 GeV. To achieve the design luminosity exceeding 5*10^34 cm^-2s^-1 at the optimal CoM energy of 4 GeV, a large crossing angle combined with the crab-waist correction scheme is adopted. However, this scheme introduces strong nonlinearities in the interaction region (IR) due to the extremely low vertical beta function of beta_y* <=1 mm, wh…

really exquisite profile of (& extended hang with) brian #eno, by grayson haver currin. https://www.gq.com/story/brian-eno-wants-to-know-if-youre-listening

Brian Eno Wants to Know If You’re Listening
For the last 60 years, Brian Eno has been one of the world’s most creative and inspiring musicians, thinkers, and activists. At 77, he has no interest in stopping, even if he can sense the end.

Kinetic collisionless model of the solar transition region and corona with spatially intermittent heating
Luca Barbieri, Pascal D\'emoulin
https://arxiv.org/abs/2510.05954 h…

Kinetic collisionless model of the solar transition region and corona with spatially intermittent heating
We develop a three-dimensional kinetic model of the solar transition region and corona in which the plasma above the chromosphere is collisionless and embedded in a uniform magnetic field. Heating occurs intermittently at discrete locations on the chromospheric surface, modeled through a surface coarse-graining procedure that produces non-thermal boundary conditions for the Vlasov equation. The resulting stationary distribution functions generate suprathermal particle populations and naturally …

Equivariant stability of vortices in Manton's Chern-Simons-Schr\"odinger system on the hyperbolic plane
Oussama Landoulsi, Sohrab Shahshahani
https://arxiv.org/abs/2509.06090

Equivariant stability of vortices in Manton's Chern-Simons-Schrödinger system on the hyperbolic plane
In this work we study magnetic vortices on the hyperbolic plane for a Chern-Simons-Schrödinger system introduced by Manton. The model can be thought of as the Schrödinger analogue of the Abalian-Higgs model. It consists of a system of partial differential equations, where the complex Higgs field $Φ$ evolves according to a nonlinear Schrödinger equation coupled to an electromagnetic field $A$. We restrict attention to the self-dual (Bogomolny) case under equivariance symmetry. For each $m\ge…

Strict Log-concavity of $k$-coloured Partitions
Kathrin Bringmann, Ben Kane, Anubhab Pahari, Larry Rolen
https://arxiv.org/abs/2510.07769 https://arxiv.org…

Strict Log-concavity of $k$-coloured Partitions
In recent years, there has been extensive work on inequalities among partition functions. In particular, Nicolas, and independently DeSalvo--Pak, proved that the partition function $p(n)$ is eventually log-concave. Inspired by this and other results, Chern--Fu--Tang first conjectured log-concavity of $k$-coloured partitions. Three of the authors and Tripp later proved this conjecture by introducing recursive sequences and a strict inequality for fractional partition functions, giving explicit e…

A Rate-Distortion Bound for ISAC
Mohammadreza Bakhshizadeh Mohajer, Alex Dytso, Daniela Tuninetti, Luca Barletta
https://arxiv.org/abs/2510.08487 https://a…

A Rate-Distortion Bound for ISAC
This paper addresses the fundamental performance limits of Integrated Sensing and Communication (ISAC) systems by introducing a novel converse bound based on rate-distortion theory. This rate-distortion bound (RDB) overcomes the restrictive regularity conditions of classical estimation theory, such as the Bayesian Cramér-Rao Bound (BCRB). The proposed framework is broadly applicable, holding for arbitrary parameter distributions and distortion measures, including mean-squared error and probabi…

Optimal $L^2$ Error Estimates for Non-symmetric Nitsche's Methods
Gang Chen, Chaoran Liu, Yangwen Zhang
https://arxiv.org/abs/2510.05597 https://arxiv.…

Optimal $L^2$ Error Estimates for Non-symmetric Nitsche's Methods
We establish optimal $L^2$-error estimates for the non-symmetric Nitsche method. Existing analyses yield only suboptimal $L^2$ convergence, in contrast to consistently optimal numerical results. We resolve this discrepancy by introducing a specially constructed dual problem that restores adjoint consistency. Our analysis covers both super-penalty and penalty-free variants on quasi-uniform meshes, as well as the practically important case on general shape-regular meshes without quasi-uniformity.…

An Acoustic Model for Sunquakes Unifying the Solar Interior and Atmosphere
John Stefan, Alexander Kosovichev
https://arxiv.org/abs/2509.06848 https://arxiv…

An Acoustic Model for Sunquakes Unifying the Solar Interior and Atmosphere
One of the leading hypotheses for sunquake generation suggests that flare-accelerated particles originating from the reconnection site in the corona travel down to the chromosphere and photosphere, where they deposit energy through collisions and subsequently drive acoustic oscillations. To properly encompass this top-down excitation mechanism, we extend the domain of a semi-spectral 3D acoustic model of the global Sun up to several 10's of Mm above the photosphere, where the transition region …