Tootfinder

Probing Solar Polar Regions
Yuanyong Deng, Hui Tian, Jie Jiang, Shuhong Yang, Hao Li, Robert Cameron, Laurent Gizon, Louise Harra, Robert F. Wimmer-Schweingruber, Fr\'ed\'eric Auch\`ere, Xianyong Bai, Luis Bellot Rubio, Linjie Chen, Pengfei Chen, Lakshmi Pradeep Chitta, Jackie Davies, Fabio Favata, Li Feng, Xueshang Feng, Weiqun Gan, Don Hassler, Jiansen He, Junfeng Hou, Zhenyong Hou, Chunlan Jin, Wenya Li, Jiaben Lin, Dibyendu Nandy, Vaibhav Pant, Marco Romoli, Taro Sakao, Kri…

Probing Solar Polar Regions
The magnetic fields and dynamical processes in the solar polar regions play a crucial role in the solar magnetic cycle and in supplying mass and energy to the fast solar wind, ultimately being vital in controlling solar activities and driving space weather. Despite numerous efforts to explore these regions, to date no imaging observations of the Sun's poles have been achieved from vantage points out of the ecliptic plane, leaving their behavior and evolution poorly understood. This observation …

from my link log —
Elementary functions NOT following the IEEE 754 floating-point standard.
http://www.hlsl.co.uk/blog/2020/1/29/ieee754-is-not-followed
saved 2025-02-11

Elementary Functions and NOT Following the IEEE 754 Floating-Point Standard — TRYING TO FIND THE OBVIOUS
The IEEE-754 Standard for floating-point numbers was introduced initially in 1985 to solve the problem of diverse floating point implementations prevent code being portable and increase stability across platforms. It has been widely adopted and revised over the last 30 years and if you have dealt

Laboratory Investigation of CO2-Driven Enhancement of Radiolytic H2O2 on Europa and Other Icy Moons
Bereket D. Mamo, Ujjwal Raut, Ben D. Teolis, Trevor P. Erwin, Richard J. Cartwright, Silvia Protopapa, Kurt D. Retherford, Tom A. Nordheim
https://arxiv.org/abs/2506.15819

Laboratory Investigation of CO2-Driven Enhancement of Radiolytic H2O2 on Europa and Other Icy Moons
Observations of Europa's leading hemisphere reveal elevated H2O2 in the warmer, low latitude chaos terrains compared to the colder, polar regions. This distribution disagrees with prior laboratory radiolysis studies of pure water ice, which show higher H2O2 yields at colder temperatures. The regions with higher peroxide abundance, Tara and Powys Regiones, also present increased amounts of CO2, possibly sourced from Europa's interior. To investigate whether CO2 influences radiolysis of water ice…

"In coming weeks, proposed job cuts and restructures will be released for the Academic Portfolio, Research and Innovation Portfolio, the College of Science and Medicine, and the College of Arts and Social Sciences."
https://www.abc.net.au/news/2025…

Australian National University announces first round of job cuts as part of effort to turn around financial issues
As the Australian National University grapples with its dire financial position, the first of several rounds of job cuts has been announced as the institution seeks to save $250 million by the end of the year, including $100 million from salaries.

This https://arxiv.org/abs/2502.21249 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

A relax-fix-and-exclude algorithm for an MINLP problem with multilinear interpolations
This paper introduces a novel algorithm for Mixed-Integer Nonlinear Programming (MINLP) problems with multilinear interpolations of look-up tables. These problems arise when objective or constraints contain black-box functions only known at a finite set of evaluations on a predefined grid. We derive a piecewise-linear relaxation for the multilinear constraints resulting from the multilinear interpolations used to approximate the true functions. Supported by the fact that our proposed relaxation…

(And now @… are less than €19,000 away from their stretch target of € 75,000 to provide @… services to all. Amazing work folks and fedizens 🤩)
#Fediverse is amazing, less than 24 hours after I posted this and @peertube  is only €223 from the penultimate target with 30 hours to go.
Not taking any credit for that, but happy to see a chord has been struck for all genuine surveillance-capital-free social media. Even more important in the time of #NoKings.
Looks like I'm going to be busy making #Science videos on #ClimateChange in the #Polar Regions too for the next few weeks.
Here's one I made earlier on #SurfaceMass Budget. Let me know if there's something #Climate and/or #ice related you'd like to see a short clip about and I'll see what we can do
#fedizens who may not have seen this already? If they make the €55,000 target I promise to write a peertube channel into my next grant proposal, AND I'll post some better quality videos of our Greenland and #Antarctic research over the coming weeks...
Go!
https://support.joinpeertube.org/en/

This https://arxiv.org/abs/2505.21091 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csCY_…

Position is Power: System Prompts as a Mechanism of Bias in Large Language Models (LLMs)
System prompts in Large Language Models (LLMs) are predefined directives that guide model behaviour, taking precedence over user inputs in text processing and generation. LLM deployers increasingly use them to ensure consistent responses across contexts. While model providers set a foundation of system prompts, deployers and third-party developers can append additional prompts without visibility into others' additions, while this layered implementation remains entirely hidden from end-users. As…

from my link log —
Wasm SpecTec has been adopted.
https://webassembly.org/news/2025-03-27-spectec/
saved 2025-03-28 https://

SpecTec has been adopted - WebAssembly
WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the web for client and server applications.

Inner disc and circumplanetary material in the PDS 70 system
Daniele Fasano, Myriam Benisty, Pietro Curone, Stefano Facchini, Francesco Zagaria, Tomohiro C. Yoshida, Kiyoaki Doi, Anibal Sierra, Sean Andrews, Jaehan Bae, Andrea Isella, Nicol\'as T. Kurtovic, Laura M. P\'erez, Paola Pinilla, Luna Rampinelli, Richard Teague
https://

Inner disc and circumplanetary material in the PDS 70 system
The two giant protoplanets directly imaged in the dust-depleted cavity of PDS 70 offer a unique opportunity to study ongoing planet formation. Both planets have been detected in infrared thermal emission and in H$α$, indicating active accretion. We calibrate and analyse archival ALMA Band 6 and 7 observations of PDS 70 from 2019, 2021, and 2023 to search for circumplanetary material and assess its motion. Using 2D visibility modelling of the high-resolution (~0.11"x0.08" in Band 6; ~0.05"x0.05…

The ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO): III. Dust and Gas Disk Properties in the Lupus Star-forming Region
Dingshan Deng, Miguel Vioque, Ilaria Pascucci, Laura M. P\'erez, Ke Zhang, Nicol\'as T. Kurtovic, Leon Trapman, Estephani E. TorresVillanueva, Carolina Agurto-Gangas, John Carpenter, Paola Pinilla, Uma Gorti, Beno\^it Tabone, Anibal Sierra, Giovanni P. Rosotti, Lucas A. Cieza, Rossella Anania, Camilo Gonz\'alez-Ruilova, Michiel R. Hogerheijd…

The ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO): III. Dust and Gas Disk Properties in the Lupus Star-forming Region
We present Band 6 and Band 7 observations of 10 Lupus disks around M3-K6 stars from the ALMA survey of Gas Evolution in PROtoplanetary disks (AGE-PRO) Large Program. In addition to continuum emission in both bands, our Band 6 setup covers the $\mathrm{{}^{12}CO}$, $\mathrm{{}^{13}CO}$ and $\mathrm{C^{18}O}\,J$=2-1 lines, while our Band 7 setup covers the $\mathrm{N_2H^+}\,J$=3-2 line. All of our sources are detected in $\mathrm{{}^{12}CO}$ and $\mathrm{{}^{13}CO}$, 7 out of 10 are detected in $…