Tootfinder

Exoplanet Atmospheric Refraction Effects in the #Kepler Sample: https://arxiv.org/abs/2507.02126 -> "We present an analysis on the detection viability of refraction effects in Kepler's exoplanet atmospheres using binning techniques for their light curves in order to compare against simulated refraction effects. We split the Kepler exoplanets into sub-populations according to orbital period and planetary radius, then search for out-of-transit changes in the relative flux associated with atmospheric refraction of starlight. The presence of refraction effects - or lack thereof - may be used to measure and set limits on the bulk properties of an atmosphere, including mean molecular weight or the presence of hazes.
In this work, we use the presence of refraction effects to test whether exoplanets above the period-radius valley have H/He atmospheres, which high levels of stellar radiation could evaporate away, in turn leaving rocky cores below the valley. We find strong observational evidence of refraction effects for exoplanets above the period-radius valley based on Kepler photometry, however those related to optically thin H/He atmospheres are not common in the observed planetary population. This result may be attributed to signal dampening caused by clouds and hazes, consistent with the optically thick and intrinsically hotter atmospheres of Kepler exoplanets caused by relatively close host star proximity."

"Instead of calculators, we could sit at exams with certain books on our desks, filled with logarithm and trigonometry tables, featuring formulae for algebra, calculus, and geometry. French-speaking Swiss students might remember the ubiquitous “Formulaire et Tables” of the “Commissions romandes de mathématiques, de physique et de chimie”, published by the Éditions du Tricorne, that many generations of Swiss students used during their exams."

Banning, Adopting, Reckoning
Last month, OpenAI, the company (in)famous for their ChatGPT product, released a course called "ChatGPT Foundations for K-12 Educators", an event that has raised more than a few eyebrows, and even some outrage. We must have a serious conversation about the value of a bullshit generator in the context of teaching programming skills to new generations.

Brazil’s Chamber of Deputies Approves Bill Banning Cosmetic Testing on Live Vertebrates https://vegconomist.com/politics-law/brazil-approves-bill-banning-cosmetic-testing-live-vertebrates/

Brazil's Chamber of Deputies Approves Bill Banning Cosmetic Testing on Live Vertebrates - vegconomist - the vegan business magazine
Brazil's Chamber of Deputies has approved the Senate's substitute text for a bill that would ban the testing of cosmetics, personal hygiene products, and

EMORe: Motion-Robust 5D MRI Reconstruction via Expectation-Maximization-Guided Binning Correction and Outlier Rejection
Syed M. Arshad, Lee C. Potter, Yingmin Liu, Christopher Crabtree, Matthew S. Tong, Rizwan Ahmad
https://arxiv.org/abs/2507.23224

EMORe: Motion-Robust 5D MRI Reconstruction via Expectation-Maximization-Guided Binning Correction and Outlier Rejection
We propose EMORe, an adaptive reconstruction method designed to enhance motion robustness in free-running, free-breathing self-gated 5D cardiac magnetic resonance imaging (MRI). Traditional self-gating-based motion binning for 5D MRI often results in residual motion artifacts due to inaccuracies in cardiac and respiratory signal extraction and sporadic bulk motion, compromising clinical utility. EMORe addresses these issues by integrating adaptive inter-bin correction and explicit outlier rejec…

Comprehensive Variability Analysis of Blazars Using Fermi Light Curves Across Multiple Timescales
Zahir Shah, Athar A. Dar, Sikandar Akbar, Anjum Peer, Zahoor Malik, Aaqib Manzoor, Sajad Ahanger, Javaid Tantry, Zeeshan Nazir, Debanjan Bose, Mushtaq Magray
https://arxiv.org/abs/2505.23645…

Comprehensive Variability Analysis of Blazars Using Fermi Light Curves Across Multiple Timescales
In this study, we conducted a systematic analysis of long-term Fermi-LAT γ-ray data for a sample of blazars, including FSRQs, BL\,Lacs, and BCUs, to investigate their $γ$-ray variability. We focused on light curves binned in 3-, 7-, and 30-day intervals to assess the impact of binning, using data with TS >4 as a detection threshold. We calculated fractional variability ($F_{\rm var}$) for each category and found that FSRQs exhibit higher mean variability compared to BL\,Lacs and BCUs, with BC…

From Release to Adoption: Challenges in Reusing Pre-trained AI Models for Downstream Developers
Peerachai Banyongrakkul, Mansooreh Zahedi, Patanamon Thongtanunam, Christoph Treude, Haoyu Gao
https://arxiv.org/abs/2506.23234

From Release to Adoption: Challenges in Reusing Pre-trained AI Models for Downstream Developers
Pre-trained models (PTMs) have gained widespread popularity and achieved remarkable success across various fields, driven by their groundbreaking performance and easy accessibility through hosting providers. However, the challenges faced by downstream developers in reusing PTMs in software systems are less explored. To bridge this knowledge gap, we qualitatively created and analyzed a dataset of 840 PTM-related issue reports from 31 OSS GitHub projects. We systematically developed a comprehensi…

$\texttt{AVROBUSTBENCH}$: Benchmarking the Robustness of Audio-Visual Recognition Models at Test-Time
Sarthak Kumar Maharana, Saksham Singh Kushwaha, Baoming Zhang, Adrian Rodriguez, Songtao Wei, Yapeng Tian, Yunhui Guo
https://arxiv.org/abs/2506.00358

$\texttt{AVROBUSTBENCH}$: Benchmarking the Robustness of Audio-Visual Recognition Models at Test-Time
While recent audio-visual models have demonstrated impressive performance, their robustness to distributional shifts at test-time remains not fully understood. Existing robustness benchmarks mainly focus on single modalities, making them insufficient for thoroughly assessing the robustness of audio-visual models. Motivated by real-world scenarios where shifts can occur $\textit{simultaneously}$ in both audio and visual modalities, we introduce $\texttt{AVROBUSTBENCH}$, a comprehensive benchmark…

"William Zani, one of the core programmers of the first BASIC compiler, tells the story of the demo of the DTSS system at the San Francisco AFIPS 1964 conference (minute 26:17), sending a BASIC program to from San Francisco to Hanover, New Hampshire over a telephone line, live in front of an audience, who (I quote) “went bananas”."
https…

This https://arxiv.org/abs/2504.02677 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Monte Carlo evaluations of gamma-ray and radio pulsar populations
Based on well-grounded Galactic neutron star populations formed from radio pulsar population syntheses of canonical pulsars (CPs) and millisecond pulsars (MSPs), we use the latest Fermi-LAT catalog (4FGL-DR4) to investigate the implications of proposed $γ-$ray luminosity models. Using Monte Carlo techniques, we calculate the number of CPs and MSPs that would comprise the sample of pulsar-like unidentified sources (PLUIDs) in 4FGL-DR4. While radio beaming fractions were used to scale the sizes …