Tootfinder

this *sounds* like SFMTA agreed to painting full 20-foot red curbs at every intersection, rather than the mere 10 feet at stop-controlled intersections that has been traffic engineer Ricardo Olea's policy. if so, good! parent organizing worked!
https://www.k…

SFMTA Coming Up Short on Daylighting SF’s Red Curbs, Parents Say
San Francisco’s transit agency says it will change its daylighting policy to ensure compliance with a California traffic safety law intended to protect pedestrians and cyclists.

Type II radio bursts and space weather phenomena: A statistical study
Pooja Devi, Rositsa Miteva, Ramesh Chandra, Kostadinka Koleva, Bendict Lawrance
https://arxiv.org/abs/2507.01391

Type II radio bursts and space weather phenomena: A statistical study
In this paper, we present for the first time a comprehensive statistical study between type II radio bursts from the metric (m) to the dekameric-hectometric (DH) domain and their associated solar and space weather (SW) phenomena, namely, solar flares (SFs), sunspot (SN) configurations, filament eruptions, coronal mass ejections (CMEs), their interplanetary (IP) counterparts (ICMEs) and shocks, in situ detected particles and geomagnetic storms (GSs). The m-only and m+DH radio signatures are iden…

Morph: ChirpTransformer-based Encoder-decoder Co-design for Reliable LoRa Communication
Yidong Ren, Maolin Gan, Chenning Li, Shakhrul Iman Siam, Mi Zhang, Shigang Chen, Zhichao Cao
https://arxiv.org/abs/2507.22851

Morph: ChirpTransformer-based Encoder-decoder Co-design for Reliable LoRa Communication
In this paper, we propose Morph, a LoRa encoder-decoder co-design to enhance communication reliability while improving its computation efficiency in extremely-low signal-to-noise ratio (SNR) situations. The standard LoRa encoder controls 6 Spreading Factors (SFs) to tradeoff SNR tolerance with data rate. SF-12 is the maximum SF providing the lowest SNR tolerance on commercial off-the-shelf (COTS) LoRa nodes. In Morph, we develop an SF-configuration based encoder to mimic the larger SFs beyond S…

PFD or PDF: Rethinking the Probability of Failure in Mitigation Safety Functions
Hamid Jahanian
https://arxiv.org/abs/2508.12814 https://arxiv.org/pdf/2508…

PFD or PDF: Rethinking the Probability of Failure in Mitigation Safety Functions
SIL (Safety Integrity Level) allocation plays a crucial role in defining the design requirements for Safety Functions (SFs) within high-risk industries. SIL is typically determined based on the estimated Probability of Failure on Demand (PFD), which must remain within permissible limits to manage risk effectively. Extensive research has been conducted on determining target PFD and SIL, with a stronger emphasis on preventive SFs than on mitigation SFs. In this paper, we address a rather conceptu…

Exact closure for discrete large-eddy simulation
Syver D{\o}ving Agdestein, Roel Verstappen, Benjamin Sanderse
https://arxiv.org/abs/2507.17051 https://arx…

Exact closure for discrete large-eddy simulation
In this article we propose new discretization-consistent expressions for the sub-filter stress (SFS) tensor in discrete LES, where the filter is induced by the discretization. We introduce a new two-grid filter that allows us to exactly compute the SFS tensor when DNS data is available. This new filter satisfies a "filter-swap" property, such that filtering and finite differencing can be interchanged and the resulting commutator expressions are of structural form (they can be written as the dis…

High-throughput Super-Resolution Imaging Chip based on Miniaturized Full-frequency Encoded-illumination
Xiaoyu Yang (State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China, Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK), Haonan Zhang (State Key Lab…

High-throughput Super-Resolution Imaging Chip based on Miniaturized Full-frequency Encoded-illumination
A miniaturized full-frequency encoded illumination (mini-FEI) chip is presented for high-throughput super-resolution imaging using the spatial frequency shift (SFS) effect. A tunable full SFS scheme is achieved through propagating and evanescent wave. The multi-illumination modes are precisely and flexibly modulated by an encoded LED array. The light travels to the sample via a set of prisms, producing the super-resolution images with high signal-to-noise ratio (SNR). Mini-FEI super-resolution …

Site Frequency Spectrum in stationary branching populations
Romain Abraham (IDP), Jean-Fran\c{c}ois Delmas (CERMICS), Patrick Hoscheit (MaIAGE)
https://arxiv.org/abs/2508.07906 …

Site Frequency Spectrum in stationary branching populations
This paper explores the Site Frequency Spectrum (SFS) in stationary branching populations. We derive estimates for the SFS associated with a sample from a continuous-state branching process conditioned to never go extinct, utilizing a quadratic branching mechanism. The genealogy of such processes is represented by a real tree with a semi-infinite branch, and we compute the expectation of the SFS under the infinitely-many-sites assumption as the sample size approaches infinity. Additionally, we …

Multi-Sampling-Frequency Naturalness MOS Prediction Using Self-Supervised Learning Model with Sampling-Frequency-Independent Layer
Go Nishikawa, Wataru Nakata, Yuki Saito, Kanami Imamura, Hiroshi Saruwatari, Tomohiko Nakamura
https://arxiv.org/abs/2507.14647

Multi-Sampling-Frequency Naturalness MOS Prediction Using Self-Supervised Learning Model with Sampling-Frequency-Independent Layer
We introduce our submission to the AudioMOS Challenge (AMC) 2025 Track 3: mean opinion score (MOS) prediction for speech with multiple sampling frequencies (SFs). Our submitted model integrates an SF-independent (SFI) convolutional layer into a self-supervised learning (SSL) model to achieve SFI speech feature extraction for MOS prediction. We present some strategies to improve the MOS prediction performance of our model: distilling knowledge from a pretrained non-SFI-SSL model and pretraining …

Originality of resonance and locking phenomena in $\varphi_{0}$ junction
M. Nashaat, Yu. M. Shukrinov
https://arxiv.org/abs/2508.13994 https://arxiv.org/pd…

Originality of resonance and locking phenomena in $φ_{0}$ junction
We demonstrate the realization and interplay of two ferromagnetic resonances in the SFS $φ_0$ Josephson junction. One of the resonances that is realized under microwave radiation is the famous Kittel ferromagnetic resonance. The other is the Buzdin ferromagnetic resonance appearing as a result of interaction of superconducting current and ferromagnetic interlayer magnetization. Transformations of one type of resonance to another under variation in the parameters of external radiation and the p…

SIL Allocation for Mitigation Safety Functions
Hamid Jahanian
https://arxiv.org/abs/2506.02309 https://arxiv.org/pdf/2506.02309

SIL Allocation for Mitigation Safety Functions
SIL (Safety Integrity Level) allocation plays a pivotal role in evaluating the significance of Safety Functions (SFs) within high-risk industries. The outcomes of a SIL allocation study determine the design specifications necessary to uphold the Probability of Failure on Demand (PFD) below permissible limits, thus managing risk effectively. While extensive research has focused on SIL allocation for preventive SFs, there is a noticeable gap in attention towards mitigation SFs. To address this ga…

Evidence on the incompatibility of modern SPH methods and eddy viscosity models for scale-resolved incompressible turbulence
Max Okraschevski, Niklas B\"urkle, Markus Wicker, Rainer Koch, Hans-J\"org Bauer
https://arxiv.org/abs/2506.08538

Evidence on the incompatibility of modern SPH methods and eddy viscosity models for scale-resolved incompressible turbulence
In this work, we will present evidence for the incompatibility of modern SPH methods and eddy viscosity models. Taking a coarse-graining perspective, we physically argue that modern SPH methods operate intrinsically as Lagrangian Large Eddy Simulations for turbulent flows with strongly overlapping discretization elements. However, these overlapping elements in combination with numerical errors cause a significant amount of implicit subfilter stresses (SFS). Considering a Taylor-Green flow at $\…

Non-Hermitian Chiral Superfluids with a Complex Interaction
Jia-Hang Ji, Wenxing Nie
https://arxiv.org/abs/2508.12360 https://arxiv.org/pdf/2508.12360

Non-Hermitian Chiral Superfluids with a Complex Interaction
Recently, the influence of dissipation on a quantum system has attracted much attention, particularly on how the non-Hermitian terms modify the energy spectrum, band topology, and phase transition point. Motivated by the recent investigation of non-Hermitian $s$-wave superfluidity, we study the non-Hermitian chiral $p+ip$ superfluid (SF) with a complex-valued interaction, originating from inelastic scattering between fermions. We reformulate the non-Hermitian mean-field theory for chiral SFs an…

Vortices in Two-Dimensional Chiral Superfluids
Yan He, Wenxing Nie
https://arxiv.org/abs/2506.08468 https://arxiv.org/pdf/2506.08468

Vortices in Two-Dimensional Chiral Superfluids
We study the orbital angular momentum (OAM) $L_z$ of two-dimensional chiral $(p_x+ip_y)^ν$-wave superfluids (SFs) in the presence of an axisymmetric multiply quantized vortex (MQV) with vorticity $k$ on a disk at zero temperature, in the framework of Bogoliubov-de Gennes (BdG) theory. Focusing on spectral asymmetry (or spectral flow), we find that $L_z=(k+ν)N/2$ for any integer $ν$ and $k$ in the Bose-Einstein Condensation (BEC) regime, where $N$ is the total number of fermions. While in the…