Tootfinder

This is an ace introduction to the #Fediverse by @… - I'm learning lots from this too.
Especially the peertube stuff is helpful. I have a channel and I don't know how to use it properly really either...
https://mastodon.social/@_elena/115264549144055806

Stumbled across my old NeXT "floptical" disc while looking through old boxes at the office! I've been wondering where this had gone for a few decades now: I have archives of most of my files from 1992 (when we founded Omni) through the present, but this was where I had archived my active files for several of the years prior.
Now to see if any of our NeXT cubes still has a working magneto-optical drive that can read this data…

A Sentinel-3 foundation model for ocean colour
Geoffrey Dawson, Remy Vandaele, Andrew Taylor, David Moffat, Helen Tamura-Wicks, Sarah Jackson, Rosie Lickorish, Paolo Fraccaro, Hywel Williams, Chunbo Luo, Anne Jones
https://arxiv.org/abs/2509.21273

A Sentinel-3 foundation model for ocean colour
Artificial Intelligence (AI) Foundation models (FMs), pre-trained on massive unlabelled datasets, have the potential to drastically change AI applications in ocean science, where labelled data are often sparse and expensive to collect. In this work, we describe a new foundation model using the Prithvi-EO Vision Transformer architecture which has been pre-trained to reconstruct data from the Sentinel-3 Ocean and Land Colour Instrument (OLCI). We evaluate the model by fine-tuning on two downstrea…

Hey 2D artists (based in Ireland preferred)! JOB ALERT! 📣 Especially those who do cozy cartoony or pixel art.
I have some game dev friends here in Galway from Psychic Software (Just released Necromancer's Tale) that are looking for an artist to team up for their next game.
Send your portfolio over to psychicsoftware@gmail.com

Sentiment-Aware Mean-Variance Portfolio Optimization for Cryptocurrencies
Qizhao Chen
https://arxiv.org/abs/2508.16378 https://arxiv.org/pdf/2508.16378

Sentiment-Aware Mean-Variance Portfolio Optimization for Cryptocurrencies
This paper presents a dynamic cryptocurrency portfolio optimization strategy that integrates technical indicators and sentiment analysis to enhance investment decision-making. The proposed method employs the 14-day Relative Strength Index (RSI) and 14-day Simple Moving Average (SMA) to capture market momentum, while sentiment scores are extracted from news articles using the VADER (Valence Aware Dictionary and sEntiment Reasoner) model, with compound scores quantifying overall market tone. The …

A Morse complex for the homology of vanishing cycles
Aleksander Doan, Juan Mu\~noz-Ech\'aniz
https://arxiv.org/abs/2509.20685 https://arxiv.org/pdf/250…

A Morse complex for the homology of vanishing cycles
We construct Morse homology groups associated with any regular function on a smooth complex algebraic variety, allowing singular and non-compact critical loci. These groups are generated by critical points of a certain large pertubation of the function, built from a normal crossing compactification of the variety. They are canonically isomorphic to the homology of vanishing cycles and -- in the absence of bifurcations at infinity -- recover the hypercohomology of the perverse sheaf of vanishing…

The Impact of Silicate Grain Coagulation on Millimeter Emission from Massive Protostellar Disks
Ryota Yamamuro, Kei E. I. Tanaka, Satoshi Okuzumi
https://arxiv.org/abs/2508.17727

The Impact of Silicate Grain Coagulation on Millimeter Emission from Massive Protostellar Disks
Hot accretion disks around massive protostars provide a unique opportunity to study ice-free silicate grains that cannot be investigated in protoplanetary disks. We conduct a self-consistent investigation into grain-size evolution and its impact on (sub)millimeter-wave emission from massive protostellar disks. Our radiative transfer modeling accounts for dust self-scattering and includes vertical temperature gradients in the disk structure. The results show that once silicate grains grow to siz…

JWST/NIRSpec Observations of Salacia-Actaea and M\'ani: Exploring Population-level Trends among Water-ice-rich Kuiper Belt Objects
Ian Wong, Bryan J. Holler, Silvia Protopapa, Aur\'elie Guilbert-Lepoutre, William M. Grundy, John A. Stansberry, Heidi B. Hammel, Stefanie N. Milam, Rosario Brunetto, Joshua P. Emery, Estela Fern\'andez-Valenzuela, Noem\'i Pinilla-Alonso

JWST/NIRSpec Observations of Salacia-Actaea and Máni: Exploring Population-level Trends among Water-ice-rich Kuiper Belt Objects
We present observations of the mid-sized Kuiper belt objects (KBOs) Salacia-Actaea and Máni, obtained with the Near-Infrared Spectrograph on JWST. The satellite Actaea was fully blended with Salacia at the spatial resolution of the integral field unit, and we extracted the combined spectrum. The 0.7-5.1 ${\mathrm μ}$m reflectance spectra of Salacia-Actaea and Máni display prominent water-ice absorption bands at 1.5, 2, 3, and 4-5 ${\mathrm μ}$m. The $ν_3$ fundamental vibrational band of ca…

A Spatio-Temporal Feature Fusion EEG Virtual Channel Signal Generation Network and Its Application in Anxiety Assessment
Shangqing Yuan, Wenshuang Zhai, Shengwen Guo
https://arxiv.org/abs/2509.19334

A Spatio-Temporal Feature Fusion EEG Virtual Channel Signal Generation Network and Its Application in Anxiety Assessment
To address the issue of limited channels and insufficient information collection in portable EEG devices, this study explores an EEG virtual channel signal generation network using a novel spatio-temporal feature fusion strategy. Based on the EEG signals from four frontal lobe channels, the network aims to generate virtual channel EEG signals for other 13 important brain regions. The architecture of the network is a two-dimensional convolutional neural network and it includes a parallel module …

Runaway origins of a disc mass gradient in $\sigma$ Orionis
Gavin A. L. Coleman, Thomas J. Haworth, Jinyoung Serena Kim
https://arxiv.org/abs/2509.20227 https://

Runaway origins of a disc mass gradient in $σ$ Orionis
Radiation from massive stars is known to significantly affect the evolution of protoplanetary discs around surrounding stars by driving external photoevaporative winds. Typically most studies assume that the massive stars driving these winds are comoving with their associated clusters. However, it is also known that massive stars can be runaways, after being violently ejected from their birth environment through interactions with other massive stars. In this letter, we show that the well studie…